Welded flange

Welded flange forming process is very complex , especially for large welded flange production cost is great, often need to warm up beforehand . Computer simulation of deformation of the flange is related to the process of raw materials and deformation temperature and the mechanical properties of a mathematical model representation , by means of computer simulation at any instant during deformation and stress-strain state temperature distribution . Process using computer simulation and physical simulation, the two can be mutually supporting and complementary . As welded flange forming process and the physical existence of geometric nonlinear nonlinear problems, so that the main stress method , slip line method and the upper bound method and other traditional methods in the analysis of the type of problem and the practical application of aspects there are significant limitations sex . The finite element method so that the physical characteristics of the plastic deformation process to get real inclusion, to comprehensively consider various boundary value , initial conditions, and for complex boundary with high fitting accuracy , thus becoming the metal forming process numerical Simulation of the mainstream approach . Over the past decade , with the rapid development of computer technology and increasingly sophisticated numerical methods , especially with welded flange technology continues to improve and develop , flange numerical simulation in plastic forming application has been booming , increasingly wide range of applications . hydraulic couplings From sheet metal forming the bulk metal forming , the forming simulation results from forward to backward simulation predictions for preform design , from taking into account the thermal deformation and thermal conduction to the right welded flange coupling analysis and defect microstructure prediction everywhere showing finite element simulation technology in the field of plastic processing important role and position. From plastic finite element numerical simulation technology development, the finite element method has been out of purely theoretical analysis and simulation for the exploratory phase , have been widely used in industrial production.
            In forging technology, the first rigid method axisymmetric closed die forging process of the digital simulation and experimental results are compared with , both relatively good. On the rigid law was further strengthened improvement proposed to deal with arbitrary shapes welded flange boundary conditions approach. Dimensional rigidity , simulation of the rectangular cross-section annular ring blank is forged into a circular cross section of the forging process . Mapping method based hexahedral meshing technology and based on the boundary conformation remeshing technique, forged steel bearing shaft without simplifying supernatural forging process was simulated calculations and experimental results is relatively good. Had been rotary forging process simulation , revealing the disc center cracking when rolling elements . Coupled thermo forming process analysis will consider the temperature distribution of the steel deformation problems , and considering plastic deformation work and the contact interface friction work simultaneously solving the problem of heat transfer , thus improving the accuracy of welded flange . Method for the first time using elastic deformation of steel bars with a thermal heat exchange coupling analysis . Etc. coupled thermal steady state flow calculation, analysis of rolling, extrusion, drawing and other forming process . Method using steel welded flange forging process simulation analysis , a rough calculation of non-uniform temperature field and forgings internal residual stress. On many occasions, such as a continuous forging process temperature distribution analysis of the situation , china hydraulic hose the more close to the actual simulation . With the gradual improvement of the forward simulation technology , reverse welded flange technology has been developing rapidly.

Hydraulic Hose

Hydraulic hoses mainly by liquid-resistant inner layer, middle layer, 2, 4 or 6 layers wire reinforced layer, outer layer, the inner layer has a transmission medium under pressure to protect the wire from erosion effects outer layer to protect wire from damage, wire layer is a reinforcing material from the enhancement.

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Temperature

Oil -30 degrees to 80 degrees; air -30 degrees to 50 degrees, the water 0 degrees to 80 degrees.

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Media

For hydraulic power manifold block transmission or conveying water, gas, oil pressure medium, in order to ensure that the liquid circulation and transmission fluid energy.

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Feature

1 Hose special selection made ??with synthetic rubber with excellent oil resistance, heat aging resistance.

(2) Hose high pressure, pulse performance.

3 tube tightly, use a soft, small deformation under pressure.

4 hose has excellent resistance around the song and fatigue resistance.

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Use
Products are mainly used in hydraulic support mine, oil field exploitation, suitable for hydraulic couplings construction, lifting transport, metallurgy, forging, mining equipment, ships, injection molding machinery, agricultural machinery, machine tools and various industrial sectors of mechanization and automation in the hydraulic system has a certain pressure (higher pressure) and temperature based (such as mineral oil, soluble oil, hydraulic oil, fuel oil, lubricating oil) and water-based liquids (such as emulsion, oil-water emulsion, water), and transmission fluid used, the maximum pressure resistance of up60MPa。

cutting machine features and considerations

Feature
1 sawblade. Low noise. Safety;

2 foot switch, automatic pressure and cutting operations;

3 Use the 12mm rubber block binder, not damaged;

4 can be single or multiple sections with saws;

5.800mm long feed channel plate can improve sawing accuracy;

6 automatic side injection, oil can be adjusted separately. Cut no edges, the blade is more durable;

7 This machine was valve block computer machining, sawing accuracy.

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Precautions

1) Move the table or spindle, according to the near or far with the workpiece correctly selected speed, moving too fast to prevent a collision.

2) When programming according to the actual situation to determine the proper processing and processing route, to eliminate the position due to inadequate processing or take the side of the workpiece caused by insufficient strength scrapped

Or early fall off.

3) wire cutting programs and must be confirmed before the amount of compensation is correct.

4) Check the wire tension is adequate. In cutting taper, the tension should be adjusted down to the usual half.

5) Check the electrode wire feeding speed is appropriate.

6) to be processed according to the actual situation of open selection process or adhesion process, under the premise of avoiding interference to shorten the distance between the nozzle and the workpiece. Adhesion plus

Hours of work, the distance between the nozzle and the workpiece generally take 0.05 ~ 0.1mm.

7) Check the jet hydraulic couplings stream selection is reasonable, high pressure jet roughing, finishing with a low pressure jet.

8) from the cutting process stability should observe judge found that adverse timely adjustments.

9) process, should regularly inspect and supervise the cutting conditions and found the problem immediately.

Electro-hydraulic block brake - Introduction

Brake System Overview
Brake is braking. Is the moving parts of the mechanical stop or slow the mechanical parts. Commonly known as brakes, brake. Frame from the main brake system, the brake member and the operating device and other components. Some of the brake is also hydraulic couplings equipped with an automatic brake clearance adjustment device member. In order to reduce the size and structure of the braking torque, the brake is usually installed in the high-speed shaft of the device, but the higher security requirements of large-scale equipment (such as mine hoists, elevators, etc.) should be installed near the equipment and part of the low-speed shaft work on. Some brakes have been standardized and serialized by a professional factory for selection.

pipe (size of the head) the classification and standards

Size of the first segment can be divided into concentric reducer and eccentric reducer can be divided according to the material of carbon steel reducer, stainless steel reducer, alloy steel hose nipples reducer; wall thickness can be divided by thin-diameter pipe and thick-walled diameter pipe, tube or high pressure common reducers reducers, standards can be divided into: GB-diameter pipe, non-standard diameter pipe.
Common standards: ANSI, JIS, DIN, GB, SHJ, HGJ other standards
Common Material: 20 #, 20G, 16MN, 15CRMO, 1CR18NI9TI, 304,316 and so on.

47, commonly used in the daily classification and standards elbow?
Elbow classification methods, according to its radius of curvature can be divided into long radius elbows and short radius elbows. According to the angle of the elbow, there is 45o elbows, bends and 180o with 90o elbow. In terms of pressure levels to points, there are about seventeen kinds, and the American standard pipe is the same, there are: Sch5s, Sch10s, Sch10, Sch20, Sch30, Sch40s, STD, Sch40, Sch60, Sch80s, XS; Sch80, Sch100, Sch120, Sch140, Sch160, XXS, which is the most commonly used two kinds of STD and XS.
Daily elbow can be divided into: hydraulic couplings carbon steel elbow / stainless steel elbow / alloy steel elbow / welded elbow / weld elbow / seamless elbow / thick-walled elbow / high elbow / GB elbow / day Standard elbow / American Standard elbow / German standard elbow / non-standard elbow / non-models Elbow / Reducer Elbow / Equal Elbow / Elbow 45 degree / 90 degree elbow / 180 Elbow / 1D bend head / 1.5D elbow / 2 times the elbow / 4 times elbow (Big Bend) and so on.

Hydraulic hose machine steel hydraulic couplings spindles

Hydraulic hose machine steel hydraulic couplings spindles is generally an even number greater than or equal to 4, the hand-woven, as long as this range are feasible; but mechanical knitting is concerned, on the difficult. Domestic knitting machine setting a fixed number of spindles, and is not adjustable. Therefore, the number of hydraulic hose steel ingot is best knitting machines based on the existing number of spindles to determine.
At present, the domestic knitting machine with 24, 36, 48, and 64 have been introduced along with the. However, they are designed to weave wire mesh sleeve, weaving out of the "double flower" pattern; while steel braided preferably in the form "single flower" pattern. For this type of weaving machines with slight modifications, can be used to weave steel nets.

hydraulic components superimposed Technical Analysis

Stacking manifold ways with a variety of specially designed plate connected to valve according to the ordinary requirements of the system stacked up in the hydraulic system integration methods, collectively known as HMB superimposed integration technology. Integrating in this way a hydraulic system, can be seen, modular valves, valve plate hydraulic hose adapters connections and connection blocks. Superimposed valve in the hydraulic circuit block shape its structure, named after the name suggests it is a stacked each other hydraulic valves, is to adapt to this integrated approach and special design. Rather, the overlay is superimposed valve connected hydraulic valves. It is connected to the hydraulic valve plate developed on the basis of integration of new hydraulic components. Which itself contains from 1 to 2 separate valves, its internal structure and general hydraulic valve similar. The valve between the upper and lower surfaces of the joint surface, the valve surface in both imports and exports. In addition, there is for internal connection hydraulic couplings between the valve channels. Therefore, modular valves in the hydraulic valve play both the role of connecting passage between the valve underway role.

the technical parameters

Second, the technical parameters:
Sealing diameter 30-120mm (according to user demand for processing)
Working pressure 1-8MPa (according to user demand for processing)
Starting pressure hydraulic couplings relief valve 0.4-0.5MPa
Work flow injection 4-4.5 tons per hour
Sealing depth of 1-8m
Model
OD
(Mm)
Expanding the scope of the free state
(Mm)
Applicable aperture
(Mm)
Free state working pressure
≤ (Mpa)
Work under compressive strength (Mpa)
Test pressure
Burst Pressure
φ32-2
50 ± 2.0
90 +8-4
60
6
12
24
φ38-2
55 ± 2.0
95 +8-4
65
5
10
20
φ45-2
63 ± 2.0
100 +8-4
75
4
8
16
φ45-4
69 ± 2.0
100 +8-4
75
16
24
32
φ51-2
69 ± 2.0
110 +8-4
90
4
8
16
φ51-4
75 ± 2.0
110 +8-4
90
16
24
32
φ64-2
84 ± 2.0
120 +8-4
100
3
6
12
φ64-4
90 ± 2.0
120 +8-4
100
8
12
16
φ76-2
94 ± 2.0
130 +8-4
110
3
6
12
φ76-4
99 ± 2.0
130 +8-5
110
8
12
16
φ89-2
109 ± 2.0
140 +8-5
130
3
6
12
φ102-2
122 ± 2.0
160 +8-5
150
3
6
12