to warm the pipe full pipe pressure testing machine

To warm the pipe full pipe pressure equipment is used to test the coil resistance to internal pressure test, sufficient to avoid detection of resistance to internal pressure pipe brought incompleteness is an economical and practical, versatile, high degree of automation of the testing machine.
       To warm the pipe full pipe hydraulics fittings pressure testing machine controlled by a pressure micro part, auto-fill pressure relief and electric components, pressure micro control part adopts the microcomputer MCU control, equipped with a high-resolution, high-speed Σ-△ 16-bit analog-to-digital conversion chips, communications and computers always, you can also be individually controlled by the pressure unit, and according to stressful situations automatically fill pressure and automatic pressure relief. The machine can be achieved in a single hydraulic hose fitting step flushing, pressure and emptying tests. With leakage warning, burst identification, real-time monitoring, power holding pressure and other functions. All use the machine CE certification of electronic components, solenoid valves, Germany, Denmark sensor; reliable long-term operation and high hose adapters stability, grape purple border, decent, dignified and beautiful.

CNC Cutting Machine Buyer's Guide

Currently CNC flame and plasma cutting machines in China's industrial enterprises begin mass popularity, many enterprises in order to improve production efficiency, expand production scale, began to buy and make

With CNC cutting machine, but for lack of basic concepts and knowledge of CNC cutting, in the purchase and use of CNC cutting machine in the process of this or that some of the technical

Problems and difficult to use, and we have compiled a brief summary of this Buyer's Guide CNC cutting machine, cutting machine wish to contribute to corporate procurement and CNC hydraulic hose and fittings cutting technology

Popular.

Enterprises to purchase CNC cutting machine will undoubtedly have to achieve three main objectives:

Capable of cutting the material and thickness of a sheet, production and processing of a specific product,
Can improve cutting efficiency and cutting quality,
Can effectively save steel and consumables!
According enterprises to purchase CNC cutting machine three main objectives, procurement can be broadly divided following five steps:

Step one: Select the CNC cutting machine model and specific configuration:

According enterprises to cut material and thickness, as well as cutting efficiency and cutting quality requirements, first determine the type of purchase CNC cutting machine, flame, plasma, laser

Or CNC bevel cutting machine. Secondly, according to the thickness of the material to be cut, to understand flame or plasma CNC cutting machine capacity and effective perforation perforation techniques to select

And to determine the specific hydraulic quick coupling configuration of CNC cutting machine, such as plasma power type, flame gun and preheat cutting oxygen configuration, bevel cut, CNC cutting machine configuration to determine

With roughly the price.

Particular attention should be: CNC flame cutting machine cutting thickness depends on the effective capacity and automatic plate perforation perforation technology, through two or three solenoid valve control and CNC

The system automatically perforation process to obtain implementation. CNC plasma cutting machine cutting thickness depends on the effective plasma power efficient perforation thickness, not the maximum cutting thickness

Degrees.

Procurement priorities: procurement personnel must carefully read and remember different manufacturers recommend different power supply effective plasma cutting thickness (internal perforation), is not the largest cut

Cutting thickness (edge ​​starts), hydraulic hose clamps CNC plasma cutting machines to ensure effective cutting and perforation thickness. Learn and understand CNC flame cutting machine plate perforation process

And equipment, as well as numerical control system provides automatic perforation process and technology to ensure CNC flame cutting machine has a valid plate perforation process and cutting ability.
Step two: To investigate the CNC cutting machine business manufacturing quality and precision:

In the CNC cutting machine model and configuration is determined, the study focused on the manufacture of CNC cutting machine enterprise quality and cutting accuracy. CNC cutting machine tool structure, rack and pinion

Quality, quality guides and gear box, machine installation grounding and shielding techniques are related to or determines the quality CNC cutting machine and cutting accuracy.

Procurement priorities: procurement officers need to carefully understand and compare different machine CNC cutting machine business structure and machine configuration, understand the business of manufacturing production CNC cutting machine

Equipment, processing quality and cutting accuracy, as well as an optional component parts of a variety of imported brands and features, by configuring the imported products and components critical to ensure that CNC cutting

Machine tool manufacturing quality and precision.

Step 3: Select CNC system

After determining the type and CNC cutting machine configuration selected cutting machine manufacturers, the next step is to choose the CNC system. CNC cutting machine CNC system is the heart,

CNC system CNC system hardware configuration determines the stability of the cutting CNC system control software, especially automatic cutting process, decided to cut quality CNC cutting machine

Volume and cutting efficiency.

Numerical stability of the system is the first important!

The two large-scale development of CNC system Genre:

One is based on the Windows platform genre of modern technology to the United States as the representative of the manufacturer of CNC system; Another is a DOS-based platform for automated cutting technology genre,

In a famous German CNC cutting machine manufacturers use the system to represent, such as ESAB CNC system, Messer CNC system used by the Canadian Lynx, FastCAM NC Department

Systems. Two great schools of different points: First, the stability of numerical control system, automatic cutting technical schools is much higher than Windows genre of modern technology, and second, CNC system price,

Automatic cutting technical schools is much lower than Windows genre of modern technology, three are CNC system display interface, Windows genre of modern technology is better than the automatic cutting technology flow

Pie.

Automatic cutting technology genre point of view: an imported CNC system (8 ~ 90,000 yuan) than an ordinary computer (4 to 5 thousand dollars) cost 20 times more expensive CNC cutting machine

The. Obviously, the use of expensive CNC programming, nesting, Internet, communications and document management, resulting in more expensive most of the time at the CNC cutting machine

Pending the CNC programming nesting idle state, is a tremendous waste of resources! The correct way is to programming, nesting, Internet, communications and document management

Such work to low-cost computers and programming nesting software to deal with, so do full-time CNC cutting machine cutting, automatic cutting, efficient cutting.

Procurement priorities: procurement staff need according to their business needs, companies need to choose suitable CNC system. Learn and understand the main cause system instability NC

To improve the stability of the causes and ways to ensure that companies buy CNC cutting machine and CNC systems, long-term, stable, low-cost operation.

Step four: to learn to improve cutting efficiency and cutting quality approach

CNC cutting machine for cutting efficiency and cutting quality is critical to the user, but also the corporate procurement evaluate the success of CNC cutting machine and the only criterion for good or bad.

Of particular note: In the CNC cutting machine is basically the same structure and hardware configuration or similar circumstances, CNC cutting machine cutting efficiency and cutting quality primarily by optimizing nesting

Software and CNC cutting control software decision.

Recent trends: CNC cutting new technology development is to achieve CNC cutting machine of the "full-time cutting, automatic cutting, efficient cutting, cutting and high-quality sets

Expected rate cut. "Guiding ideology of its core philosophy and CNC cutting machine in hardware design and manufacturing technology perfected and the same or similar conditions, through software

Technology, namely CNC cutting optimization nesting programming software, CNC cutting control software, and automatic perforation and automatic cutting process, to further improve the CNC cutting machine

Cutting efficiency and cutting quality, CNC cutting machine to achieve "full-time, automatic, efficient, high quality and high nesting rate cut."

Core Techniques and Methods: One full-time cutting, nesting software programming using FastCAM on the computer the whole board and I programmed plate nesting, cutting machine cutting full-time

To avoid programming on CNC nesting, reducing cutting machine productivity. Second, automatic cutting, CNC system using FastCAM automatic cutting process,

Automatic perforation and automatic cutting, replace manual manual cutting. Third, efficient cutting, use FastCAM nesting software programming and CNC systems common edge, and even cut,

By side, bridging efficient cutting process, effectively reducing the warm-up perforation (perforation decrease more than 70%), to improve the cutting efficiency. Four high-quality cutting, use FastCAM

Nesting software programming and CNC system CNC cutting technology to optimize the pretreatment process, removing excess entity, to avoid empty running around and repeat the cutting process, cutting away the compression fitting

Order to ensure a smooth high-speed cutting machine cutting machine to avoid jitter, to ensure the cutting parts closed without deformation.

Procurement priorities: procurement staff need to learn and understand the full-time cutting, automatic cutting, efficient cutting and high-quality cutting ideas and techniques to business leaders and

CNC cutting cutting workers provide a new concept and technical information, to ensure that enterprises in the use of good CNC cutting machine, based on effectively improve cutting efficiency and cutting quality.

Step five: to learn effectively save steel and consumables technologies and methods

Save steel, and supplies the most concern is the enterprise. Enterprises to profit, must be effectively save steel and consumables. Therefore, companies must be able to purchase a CNC cutting machine

Validity save steel and consumables.

The most effective means: saving steel and supplies the most effective means is to use programming software FastCAM optimized nesting, nesting and through the entire board I plate nesting, effective

Improve nesting steel utilization, reduce corners more than expected, so that the remaining plates get reused; through FastCAM efficient cutting nesting software programming, effectively reduce preheating

And piercing passes, reduce the flame preheating perforated supplies loss, reducing loss of plasma cutting nozzle, so as to effectively save steel and consumables.

Simple economic data: According to the official statistics agency specialized in the production process, welding steel cutting, Chinese steel enterprises waste 10% more than in Western countries. A Year

Cutting and welding on steel tons of medium-sized enterprises, are wasted each year there are thousands of tons of steel. If you can use a good nesting optimization similar FastCAM programming software, the annual

For enterprises to save thousands of tons of steel, even at 5% per year for the enterprise to save hundreds of tons of steel, saving tip supplies several hundred thousand dollars a year to restore economic losses for enterprises

Loss, increased corporate profitability hundreds of million. Also, use a good FastCAM nesting software and CNC cutting machine CNC system to achieve full-time, automatic and efficient cutting, make a

CNC cutting machine capacity becomes two or even three sets, improve production efficiency and economic benefits.

Procurement priorities: procurement staff need to learn and understand FastCAM optimize nesting software for programming the entire board nesting, I plate nesting and cutting edge-connected, such as efficient cutting

Techniques and methods to provide workers with business leaders and cutting optimization nesting FastCAM programming software and effective ways to save steel supplies and technical information, to ensure that enterprises make

CNC cutting machine with a valid save steel and consumables. To learn and understand the CNC cutting of new technology development, implementation CNC cutting machine "full-time cutting, automatic cutting

, Efficient cutting, high-quality cutting, high nesting rate cut ", please continue to refer to" a new CNC cutting technology and methods, "a text.

thermal cutting, plasma cutting in the position

A kind of thermal cutting method and its application status
Commonly referred to as thermal cutting law mainly refers to cutting, plasma cutting, laser cutting. Rely on the traditional cutting of metal cutting oxidation reaction, so its cutting
Speed ​​is limited by the metal oxidation reaction speeds. Plasma cutting is to

Plasma cutting machine is to overcome this problem. Argon-hydrogen plasma cutting machine designed for cutting aluminum, stainless steel plate, the cutting current to 500 ~ 1000A based.
2 plasma cutting technology development status

Development of plasma cutting technology for cutting stainless steel, aluminum and other materials. But the development so far, plasma cutting technology has been used for cutting carbon steel, mainly because other

Plasma cutting speed, easy to set the cutting conditions more suitable for automated, unmanned operation. The cutting of the cutting process often need to adjust the flame, cutting speed is slow, pre-

Thermal time limit cutting productivity, by contrast is not suitable for automated, unmanned operation.

Air or oxygen plasma cutting technology is the key cutting torch consumables life issues. As the air or oxygen oxidation, plasma cutting torch electrode

, The nozzle must be resistant to hydraulic hose clamps high temperature oxidizing atmosphere arc. So now hafnium electrode material using a high melting point, and in a special processing method embedded in copper. Nozzle mining

With a double flow structure, the advantage of improving the flow direction, speed, and plasma gas purity and cooling, to protect the nozzle, further compression of the arc. In addition to

A reduced electrode wear, arcing when cutting gas than pure oxygen with nitrogen, oxygen gas mixture, and a smaller flow rate, to be switched to oxygen from the arc. This

Outside the process of cutting nozzle in contact with the material being cut will damage the nozzle, which in the cutting torch height control efforts. Electrode and the short life of the nozzle now than in the past

Greatly improved, with a corresponding oxygen plasma cutting current maximum has been reached 500A. According to the literature [2] introduced, 400A oxygen plasma cutting, each electrode can work 3.5h, each

Nozzles can be operated 4.8h, than the literature [3] presented data has greatly improved.


    3 Comparative Analysis of thermal cutting France

    3.1 cutting efficiency

From cutting productivity perspective, not only depend on its maximum cutting thickness, and depends on its corresponding cutting speeds. Figure 1 summarizes the three kinds of hot-cutting method for cutting speed and cutting

Cutting thickness relationship, cutting material is carbon steel [1].

Contrast, plasma cutting and cutting CO2 laser cutting efficiency, 50A air plasma cutting efficiency is equivalent to 1.5kW laser cutting efficiency, 70A and 150A of the former

The latter is equivalent to 2kW and 6kW. 300A above with oxygen plasma cutting efficiency is very high-power laser cutting machine is not yet listed. Therefore, from the cutting efficiency perspective, cutting

50mm or less carbon steel, plasma cutting most efficient, cutting more than 50mm of carbon steel, maximum cutting efficiency of oxygen gas cutting.

    3.2 cutting quality

Table 1 compares the cutting, plasma cutting, laser cutting cutting surface roughness, cutting precision, cutting slit width, heat affected zone size [1], these factors are representative of

The cutting quality. As long as the correct choice of cutting method and cutting conditions, the cutting surface of the rounded edges and the lower edge of the sticky residue phenomenon can be overcome, so that two are not included in the table

.

On the cutting surface roughness, the general optimal plasma cutting. As long as special attention, not inferior to laser cutting, plasma cutting.

On the cutting accuracy and cutting slit width, the optimal laser cutting. If equipped with a cutting torch to ensure the accuracy and running gear motion characteristics, gas cutting, plasma cutting

Cutting accuracy is guaranteed.

Produced by cutting the width of the heat affected zone, deformation and cutting speed have a great relationship, cutting the cutting speed is slow, the heat-affected zone width, deformation is also large. General kerf

The narrower the cutting speed, the cutting material of the heat input is smaller, cutting the deformation is small. After testing and comparative analysis of the results is that the variation of laser cutting

Shaped minimum, plasma cutting deformation, followed by cutting the maximum deformation.

    3.3 Cost Cutting

Cutting equipment purchase costs depend on the production volume, production volume the greater the relative cost of the purchase of equipment smaller. However, cost cutting is proportional to the amount produced. Chart

2 compares the cutting, plasma cutting, laser cutting cutting costs, cutting costs, including replacement parts costs, gas, electricity, labor costs. Cutting costs is a single

Bit length cutting costs.

thermal cutting technology and applicable industry

The so-called thermal cutting, from the way it mainly includes flame cutting, plasma cutting and laser cutting three kinds, according to the market price cutting requirements and different, all three cutting

Methods currently occupy a certain market, and its technical and economic comparison the following analysis:
As pressure flame cutting, cutting nozzle height, and the warm-up time and other factors, the overall cut material reusable fitting deformation scale is large, can not meet the needs of high-precision cutting

, And the cutting speed is low, and because to be preheated before cutting, spending time, it is difficult to adapt to the needs of unmanned operation. Plasma cutting with cutting speed, Fan

Wai width and other characteristics, is suitable for cutting low thickness of sheet metal and nonmetal materials, maximum cutting speed of up to 10m/min, flame cutting is 10 times. In the underwater cutting

Can eliminate noise generated when cutting, dust, harmful gases and arc, environmental protection requirements. With the current high-power plasma cutting technology matures, cutting thickness

Up to 130mm, using water jet cutting technology has made high-power plasma cutting quality precision laser cutting close to the lower limit (± 0.2mm). As the laser cutting machine price

Expensive and currently only suitable for sheet metal cutting (usually perforated plate a long time), and fine plasma cutting machine laser cutting accuracy up to the lower limit, the cutting surface bsp fittings quality

Amount of similar, but far less than the cost cutting, laser cutting, is about a 1/3, the maximum cutting thickness up to 12mm, so with precision plasma cutting machine to replace expensive

Laser cutting machine, in favor of the most economical way to a larger amount, the sheet speed fine cutting implement. In addition, CNC plasma cutting and automatic nesting programming software

Pieces of material utilization can be split flanges improved with 5% to 10%, the annual cut 20 million tons total, the annual savings of 100 to 2 million tons of steel, worth billions of dollars. Therefore, in the industrial hair

Of countries have emerged to replace CNC plasma cutting machine flame cutting machines and laser cutting machines trends.

cutter rail classification Daquan

Bed makers are most concerned than the accuracy of machine tools, rigidity and service life, little attention to the rail system. But the realization of rail laying machine functions as a reliable

Foundation. The working parts of the machine types are specified by the control shaft moving on rails, the machine tool of the designer to select the various types and uses

In the form of rail systems, are hydraulic hose and fittings used more widely the following three; namely flat rails, linear motion guides and recirculating roller guide with a combination of flat rolling posed

Rails.

First, the rail functions
Although the rail system in the form of varied, but the nature of work is the same, the machine working parts move in the specified rail system, just like the train along the rail

Track traveling in the specified hydraulic hose manufacturers direction. Mainly the following three basic functions:
(A) the movement of the guide for the carrier;
(2) for the carrier to provide a smooth moving surface;
(3) the tool cutting force generated spread foundation or bed body, to reduce the impact of processing of parts of the passive. Movement along the rail system, most

Number of linear motion, there are a small number of arc movement. Many linear guide technology can be applied directly curved rails.

Second, the classification of rail
Machine-tool factory in the utmost effort to ensure that rail mounting accuracy. Guide is processed before the working parts are rails and after aging treatment, to remove

Internal stress. To ensure accuracy and extend the life of the rail, is a common scraping process method.
    1, linear guides
The new rail system so that the machine get fast feed rate, spindle speed is the same in the case of rapid traverse is linear guide features. Linear guide rail and plane

Rails, will have two basic components; reusable fitting as a guide for a fixed element, the other is moving element. In order to ensure the accuracy of the machine, bed, or a small amount of column

Scraping is essential, in general, the installation is relatively simple.
Linear guide between the moving element and the fixed element without intermediate medium, but with rolling balls. Because rolling balls adapted to high-speed movement, low friction, and spirit

High sensitivity to meet the work requirements of the moving parts, such as the machine tool turret, carriage and so on.
Long working hours, the ball begins to wear, the role of preload on the ball began to weaken, causing the machine working parts of the motion accuracy decreases. If you want to maintain the initial

Precision, rail brackets must be replaced, or even replace rails. If the rail system is already pre-load effect. System accuracy has been lost, the only way is to replace the rolling elements

Pieces.
   @@ 2, linear roller guide
Linear roller guide system is planar and linear roller guide rail combination with a roller mounted on parallel rails with ball bearing rollers on behalf of the moving parts of the machine

. Advantage is that contact area, large load, and high sensitivity. See from the end of the bed, the roller holder on a flat top surface and the side guide, in order to obtain high-precision

, On the machine frame member and the inner surface is disposed between a wedge, the pre-load acting on the bracket side. Wedge works with wedges similar work department

Weight of the role of the top surface of the stent. Acting on the rail system, the pre-load is adjustable, for compensation for the loss of wedge, this feature is widely used

In the medium or large bed, because it CNC instruction responsive to withstand load, linear roller guide system performance than traditional flat guide to withstand high-speed operation,

Improve the performance of the machine.
    3, inlaid steel rails
The most commonly used on the machine is fitted with steel guide rails form, its use has a long history. Inlaid steel guide rail system is a fixed element rectangular cross-section.

It can be horizontally mounted on the machine bed body, but also can be molded integrally with the bed, are called inlaid steel or integral. Inlaid steel rails are made of steel, hardened and

Grinding. Rockwell hardness of 60 degrees or more, the inlaid steel rails with screws or adhesive (epoxy) attached to the machine bed or by scraping the surface of the column with, indeed

Paul rails for optimum flatness. This form, maintenance and replacement easy, simple and very popular with maintenance workers welcome.
    4, slide rail
Traditional development of rail, first in the form of the sliding element and the rail, characterized by the slide rail between the rail and the slider of the medium used, the different forms of

Is to choose a different media.
Hydraulic systems are widely used in many rail. Hydrostatic guide is one of them, hydraulic oil under pressure into the groove sliding element, the guide rails and slide

The oil film between the elements, the spaced rails and the moving element, which reduces the friction of the moving element. Hydrostatic guideway for large loads are extremely effective for eccentric

Load a compensation effect. For example: a large sand box in the processing, the machine just went to the end of the trip, the load can be increased hydraulic rail, the rail accurately

To maintain the level of the load state. Some horizontal boring and milling machining using this technique, the spindle speed compensation deep decline.
The use of oil as a medium in the form of another guide rail is the dynamic pressure, dynamic pressure and static pressure guide rail is the difference: the pressure oil is not functioning, it uses

The viscosity of the oil to avoid the moving element and direct contact between the rails, the advantage of saving hydraulic pump.
The air moving elements can also be used between the media and the guide rail, it also has two forms, pneumatic and pneumatic dynamic pressure hydrostatic guide rail, the working principle of the hydraulic rail

Same.
    5, other forms of rails
Another commonly used on the machine guide Dovetail form, generally used for positioning the moving parts of the machine. For example: tailstock turning centers, rail system

The tailstock moves above or to the requested position to the supporting parts to be processed, and then quickly clamped. Many machine tool accessories, such as positioning table, rotary table or

Rotating shaft, also used as a positioning element Dovetail. Then clamped in the required position. If the machine reciprocating stroke is longer, then use a soft V-shaped guide, such as flat

Surface grinder and planer. Advantage is V-shaped guide rail system-oriented, able to withstand gravity cutting. Some use of V-shaped guide rail and plane combined form, V-rail

As a guide, a flat rail as a support body.

To ensure the rail system life. Maintenance is critical. Rail is one of the components of precision machine tools, it is impossible to protect 100% of dust, dust pollution. Because

Here, users should regularly check and maintain. Linear guides and linear roller guide posts require periodic lubrication, a lot of the ball linear guide systems and roller parts are installed grease

Connector is connected to the bracket. No matter what form of guide rail system, maintaining good lubrication of rolling elements, can reduce the rail system wear and prolong machine precision

Hold time.

plasma arc cutting machine unstable fault analysis

Plasma arc cutting machine cutting quality directly affects the stability of the plasma arc instability will lead to cuts uneven buildup and other defects, can lead to

The control system related to reduced life components, nozzles, frequent replacement of the electrode.hydraulic nut  For this phenomenon, analyze and propose solutions.

1 pressure is too low

Plasma cutting machine work, such as working pressure is far below the required specification pressure, which means that the ejection velocity plasma arc weakened, input air flow

Is less than the predetermined value, this time can not form a high energy, high speed plasma arc, resulting in poor cut quality, not cut through, cut buildup phenomenon. Insufficient air pressure of the original

Due to: lack of input air compressor, air regulator valve regulator cutting machine is too low, the skiving machine solenoid valve within the oil, gas path is not smooth and so on.

The workaround is to use the former to observe compressor output pressure display, if not met, adjust the pressure or compressor overhaul. If the input air pressure has reached the required

, You should check the air filter regulator adjusted correctly, gauge display can meet the cutting requirements. Otherwise deal with air filter regulator routine maintenance, indeed

Paul input air dry, no oil. If you enter the air quality is poor, it will cause the solenoid valve to generate oil, valve open difficulties valve port can not be fully opened. Furthermore,

Torch nozzle pressure is too low, the need to replace the solenoid valve; pneumatic smaller cross-section can also cause pressure is too low, according to the specification requirements replace the trachea.

2 pressure is too high

If the input air pressure far exceeds 0.45MPa, in the form of plasma-arc, excessive concentration of air being blown arc column, so that the arc column energy dispersion, weakened

Intensity of the plasma arc cutting. Caused by excessive pressure causes: improper input air regulator, air filter regulator is too high or the air filter regulator failure

.

The workaround is to check whether the right to adjust the pressure air compressor, air compressor and air filter regulator whether the pressure imbalance. Boot, such as a rotary air filters Less

Pressure valve adjustment switch, gauge unchanged, indicating that the air filter regulator failure, need of replacement.

3 burning torch nozzle and electrode

Due to improper installation nozzles, such as threaded not tighten the device to adjust the gear properly, need water cooled torch at work, did not seek to pass into the flow of cooling water to the

And frequent arcing will cause premature failure of the nozzle.

The solution is cutting the workpiece in accordance with the technical requirements of the gear equipment properly adjusted, check the torch nozzle is installed securely imprison, need to pass cooling water nozzles should provide

Before the cooling water circulation up. Cutting, adjust the thickness of the workpiece between the torch and the workpiece distance.

4 AC input voltage is too low

The use of plasma cutting machine has a large field of electricity facilities, cutting internal main circuit component failures, etc., causes the input AC voltage is too low.

The workaround is to check plasma cutting machines connected to the grid have sufficient carrying capacity, power cord specifications meet the requirements. Plasma cutting machine installation site

Point, you should stay away from large-scale electrical equipment and often have electrical interference. Use, should be cleaned regularly cutting machine dust and dirt on the component, check the wires are

Whether the aging phenomena.

5 Ground poor contact with the workpiece

Grounding is an essential preparation before cutting work. Dedicated ground unused tool, the surface with an insulating material and the long-term use of the ground so serious aging,

Will cause poor contact with the workpiece ground.

The use of specialized hydraulic pipe fittings tools to be ground, and check the ground insulation effect surface contact with the workpiece, to avoid aging ground.

6 does not automatically break arc sparker

Plasma cutting machine work, we must first plasma arc ignition by high-frequency oscillator excitation electrode and between the inner wall of the gas nozzle to produce high-frequency discharge, the gas

Local ionization of the formation of small arc, this small arc by action of compressed air, ejected from the nozzle to ignite a plasma arc, which is the main task sparker. Normal

, The spark generator working time is only 0.5 ~ 1s, the reason is not automatically broken arc is generally offset control circuit board components, discharge electrode spark gap generator

Inappropriate.

Sparker should always check the discharge electrode, so that the surface remains flat discharge adjust sparker electrode gap (0.8 ~ 1.2mm), if need be,

Change control board.

7 Other

In addition to these reasons, the cutting speed is too slow, cutting torch and the workpiece verticality, as well as the operator of the plasma cutting machine familiarity, operational level, etc.

All affect the stability of the plasma arc, the user should pay attention to these areas.

CNC plasma cutting machine analysis of various aspects of

CNC plasma cutting machine cutting process has cut fast, slotted small features, but many users tend to enterprises in the actual operation of a variety of problems occur

, Resulting in actual cutting speed is limited, slotted too large, cut surface is not the whole phenomenon, excluding CNC plasma cutting machine itself mechanical failures and other factors, the user enterprises in the operation

Is not set correctly for CNC plasma cutting machine related parameters will also affect the actual cutting results, the following will be the Blue Technology Co., Ltd. Wuhan actual shadow npt pipe fittings Experience

Rang CNC plasma cutting machine cutting effect of various factors, and users exchange about business:

A no-load voltage and the arc column voltage

Plasma cutting power, must have a sufficiently high no-load voltage, in order to easy the plasma arc ignition and stable combustion. No-load voltage is typically 120-600V, while

Arc column voltage is quick coupling fittings typically no-load voltage of the half. Arc column voltage increase, can significantly increase the power of the plasma arc, which can improve the cutting speed and cutting of greater thickness

Sheet metal. Arc column voltage tends to increase by adjusting the gas flow and shrinkage does not reach the inner electrode, but the arc column voltage can not exceed 65% of the no-load voltage, otherwise it would be, etc.

Plasma arc instability.

(2) Cutting current

The same can be improved to increase cutting current plasma arc power, but it is limited by the maximum allowable current, otherwise it would be thicker plasma arc column, kerf width increases

, Electrode life decline.

3 gas flow

Increased gas flow both to improve the arc column voltage, but also enhance the arc column compression leaving the role of the plasma arc energy is more concentrated, jet stronger, thus improving

Cutting speed and quality. However, excessive gas flow, but will make the arc column shorter heat loss increases, so that the cutting diminished capacity until the cutting process can not be normal

.

4 pipette shrinkage

Within the so-called shrinkage refers to the tip end of the electrode distance, a suitable distance so that the arc within the torch tip to get good compression, access to energy concentration, high temperature

The effective plasma arc cutting. Distance is too large or too small, will make the electrode severe burning, cutting tip burn and cutting ability. Within shrinkage generally take 8-11mm.

5 cutting nozzle height

Cutting nozzle tip height is the end to be cut from the workpiece surface. The distance is generally 4 ~ 10mm. It is the same with the electrode within the shrinkage, the distance to the right in order to give full

Waving plasma arc cutting efficiency, otherwise it would cutting efficiency and cutting quality or the torch burn.

6. Cutting speed

All of the above factors directly affect the compression effect of the plasma arc, that is, the temperature affect the plasma arc and the energy density, and high-temperature plasma arc, high energy resolution

Set the cutting speed, hydraulic nut so the above factors were associated with the cutting speed. Ensure the cutting quality of the premise, should be possible to improve the cutting speed. This is not only mention

High productivity, and can reduce the amount of deformation of parts cut kerf area and heat affected zones. If the cutting speed is inappropriate, the opposite effect, but will also increase the sticky residue,

Cutting quality.