in order to withhold machine permanent

Deduction of the machine , commonly called a crimping machine , crimping machine , is a method for crimping hydraulic hose fittings tube assembly of hydraulic equipment, which will be the metric hydraulic hose fittings supporting metal joint by crimping machine mold shrinkage force exerted by the hydraulic system, withhold solid metal joints on the supporting hydraulic tubing and rubber hose.
Tips
1 , the operating principle of dual hydraulic circuit , i.e., mouth and contraction of the piston forward and backward movement of the mold and the motive power of the hydraulic power source is generated . Not only does it move smoothly , return quickly , like a spring return , not open and lock the mold phenomenon does not occur. And all around the cylinder locking system design through easy to withhold various shaped elbow.
2 , the hydraulic system by the motor , pump , solenoid valve , relief valve and the hydraulic valve would move back and forth with a double hydraulic circuit , but also in a double hydraulic circuit of a rapid increase in drain oil from the valve passage , in order to achieve more Quick return purposes, and the speed is adjustable , noise and system pressure is reduced.
3 , the electrical control system, the control circuit applies PLC circuit , it is easy to repair circuits , easy maintenance and replacement simple.
4 , mold and die holder withhold cumulative error -free machining process to ensure that the withholding of withholding product evenly spaced lines , no size head phenomenon .
5 , in order to withhold machine permanent mechanical precision and life on the locking mechanism assembly , not only chose the high-quality steel materials, and the use of a unique heat treatment process. So crimping machine long life : the selection, heat treatment, machining process and the reasonableness of the structure are inseparable !
6, for double-column crimping machine , C -type crimping machine easy to set up because they do not die positioning, numerical methods must be used to control withhold size.
7 , withhold standard
Theoretical requirements : not from the head , does not destroy the rubber hose
In order not to take off the head - withhold efforts should be large , in order not to destroy the glue - withhold efforts to be small. To resolve this conflict without crimping machine to choose the first taper ( 0 taper ) pressure pipe machine so that both ends of the front and rear hydraulic metal joints consistent data to avoid errors. ( Note: If the front metal joints compressed intensity is too large , will be crushed if the metal connector joints backend compression intensity is too large , the rubber hose will fracture , causing the hose leakage , etc. ) .
How to withhold a satisfactory metric hose fittings hose
When the user when to withhold high-pressure pipe , if the withholding amount is too small , then the weight between the connector and the hose is too loose , the role of hydraulic hose withhold there may emerge from the joint in the initial period , if you withhold too large , then connector and hose too tight , easily lead to hose inner being localized damage, cracks , hydraulic oil directly into the steel layer from the rupture , and then he went along the gap between the wire coat tails oozing , or has been channeling along the wire layer to build up somewhere , so that the outer layer of plastic to produce drum kits and even rupture .
When withheld , nor withhold too fast, as is likely to cause damage to the rubber layer and wire breakage , so that the hose in use prematurely. Practical work , the replacement of the high-pressure hose, hose length selected , wire layers, joint shape and size to be reasonable , and should minimize the degree of bending of the hose , the majority of the damage is due to the high pressure hose making improper .
Works
Piston pump installed in the reusable hydraulic hose fittings  oil in the tank immersed in silent cooling design to achieve scientific purposes , the motor driven piston pumps , hydraulic oil output , push the plunger movement withhold tanks , resulting in mold base radial contraction , and mold squeeze on the hose fitting jacket . When the contraction reached micrometer predetermined value , squeezing automatically stop solenoid valve to change back , reverse movement of the plunger within the cylinder , die along with open, withhold hose complete.

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.

variable spring hanger (T, TH, VS, TD)

Spring hanger is mainly used for power plant steam piping or boiler equipment, heat is generated in the operation of its equipment displacement device. Calculated according to the pipeline to determine the force of spring hangers work and thermal displacement requirements.
First, the purpose and principles
Variable spring hanger is mainly socketless fitting used for power plant steam piping or boiler equipment, heat is generated in the operation of its equipment displacement device. Calculated according to the pipeline to determine the force of spring hangers work and thermal displacement requirements, the factory will spring hanger design load for tuning in accordance with: the spring preload and set the cold load position; also marked when cold Theoretic working position.
Spring hanger factory carried out in the factory setting, when mounted to the pipes and equipment after adjustment for such threads will disengage the lock pin, then spring is the design of the actual load required for cold load.
Second, model, type
Variable spring hanger has four series, mainly by the Northwest Electric Power Design Institute of T1, T2, T3, T4, T5 series, East China Electric Power Design Institute of TH1, TH2, TH3 series, TD Series ( JB/J8130.2-1999) and Chemical Design Institute VS series, the series of the same basic characteristics, carrying capacity 20daN-21000daN. Structure are suspended, and parallel suspension bearing type bearing type.
(Three), T, TH structure and model representation:
The form is divided into the middle of the installation hanger connection to connect the upper and lower hanger spring hanger spring TH 1 TH 2, TH 3 three models holder spring.
TH 1 is divided into A, B, C are three types;
TH 1 A (T1) is connected to a single ear hanger spring;
TH 1 B (T2) is connected binaural spring hanger;
TH 1 C for the threaded connection hanger spring;
These three types of china hydraulic hose springs, primarily used for hanging in the beam, the beam tube on the backplane.
TH 2 (T3) for installation in steel beams;
TH 3 (T4) is mainly used in the basic shelving, steel beams, slabs;
T5 parallel suspension type.
(Four), VS, TD structure and model representation:
Variable spring hangers primarily by helical springs, displacement indicator board, shell and elastic nut and other parts.
Variable spring hanger according to the installation, divided into A, B, C, D, E, F, G seven kinds of patterns.
A type ---- on threaded suspension type;
Type B ---- single ear hanging type;
C-type ---- Binaural suspension type;
Type D ---- on adjustable shelving type;
E-type ---- Next adjustable shelving type;
F-type ---- supporting shelving type;
G-type ---- Parallel suspension type;

Steam pipe types

, fabric steam hose:
1, Application: Suitable for conveying no higher than 150 ℃ saturated steam or hot water.
2, features: layer has good heat resistance, the hose burst pressure of not less than 10 times the working pressure.
Steam hose clamping cloth armor:
1, Application: Suitable for conveying no higher than 150 ℃ saturated steam or hot water.
2, features: the outer surface of the hose galvanized metal spiral wound wire, can effectively increase the strength of the tube, increase the bearing capacity. Working conditions for china hydraulic hose complex, have higher requirements for safe operation of occasions.
Second, the PTFE tube:
1, Uses: Widely used in chemical, mechanical, electronic, electrical, military, aerospace, pipeline, petroleum, textile, electrical insulation, environmental protection and other economic sectors.
2, Features: Exterior organized crime, no mechanical impurities, high strength, excellent chemical stability, corrosion resistance, sealing, self-lubricating non-adhesive, electrical insulation and excellent resistance to aging, can be -60 ~ 250 ℃ long-term use, has excellent corrosion resistance and reliable, for conveying high temperature strong corrosive media. And can be processed into O-, S-, □ type and other shapes, the quality is guaranteed.
⑴. Temperature resistance, corrosion resistance, high pressure
Because this product uses a special high-grade PTFE hose, high temperature wire mesh stainless steel with Japanese advanced technology Twill spiral hose, suitable for high temperature, corrosion, high specific environment.
This product 3kg/cm2 under pressure inside the hose can withstand 250 ℃ high temperature steam, while the skin temperature does not exceed 60 ℃, ensure the safety of operations.
This product can 10kg/cm2 valve block steam pressure normal use.
⑵. Lightweight, soft and strong
This product is treated with a special assembly, length 2m (including both ends of the connector) hose weighs only 500 grams. Greatly reduce operator work intensity, while softness strong, free bending, absolutely do not kill tuck impede ventilation.
⑶. Strong anti-destructive
Because this product uses advanced technology from Japan Twill self-locking stainless steel spiral hose protection, can withstand 180kg pull, no damage during normal use.
⑷. Durable
Comprehensive advantages of this product, make life much more than existing types of steam hoses, long-term use does not have to be replaced, greatly reduce the cost and improve efficiency, economical and practical.
Third, the stainless steel pressure metal hose:
1, Uses: Widely used in aviation, aerospace, petroleum, chemical, metallurgy, electric power, paper, wood, textile, construction, medicine, food, tobacco, transportation and other industries.
2, features: corrosion resistance, high temperature resistance, low temperature (-196 ℃ ~ +420 ℃), light weight, small size, flexibility is good.
Fourth, the silicone tube:
4-50MM diameter within the range of any length, cold-resistant, high temperature resistant, non-toxic and tasteless in line with food hygiene, plus fiberglass silicone tube, its moisture and pressure resistance stronger. Can be temperature 300 ℃, the main specifications for diameter 9.5 and 12.7, thickness 3.5, pressure ≤ 0.3MPa, for the mouth of the peristaltic pump tubing through the pump head rolling mill creates a vacuum and drive the fluid flow.