The working principle of the pipe bending machine is to insert the pipe fittings into the mandrel of the machine, and the pipe bending die is mounted on the main shaft. After clamping the pipe fittings through the clamping die and the pipe bending die, the electrical system is used to control the air pressure system to make it rotate back and forth. After completion, the finished product with the required bending radius can be obtained.
If the hot bending processing technology is used in the pipe bending process, no matter the diameter of the pipe, it is necessary to load dry fine sand as required. When processing heated metal pipe bends, the temperature can be adjusted, and aluminum pipe bends are also used for pipe bending, but the pipe does not need sand. To reduce the ovality of the elbow and make the abdomen of the elbow concave, the pipe wall can be beaten on both sides of the elbow to form an ellipse between the processing part of the elbow and the end of the pipe.
In actual processing, don't forget that the most effective method for processing elbows with high-alloy steel pipes or non-ferrous metal pipes should be mechanical methods. If the sand filling is required, do not hit with a hammer to prevent damage to the elbows. The aluminum pipe also needs sand in the pipe bending process. After the pipe bend is processed to a certain extent, special testing equipment can be used to check the smoothness. If the temperature is correct, the processed pipe section can be moved to the plane, and the pipe section can be processed to be complete with the mold.
Flaw detection can be prepared before heat treatment. If there are defects, they should be repaired in advance. After wear, the pipe wall of the elbow should not be less than the nominal wall thickness. If it is necessary to bend the pipe, it should be recorded. There are many methods for bending the pipe. Due to the different raw materials and materials of the pipes, there are great differences in the selection of processing methods, but the final purpose of all elbow processing processes is the same, and the quality of the elbows is guaranteed.
Then when the hydraulic system of the pipe bender leaks oil, the number of oil pipe joints can be reduced and the integrated control valve can prevent oil leakage. To reduce the hydraulic shock and mechanical vibration during the rectification process. And prolong the rectification time as much as possible, the pipe bender should be checked regularly. And timely treatment, to prevent leakage caused by lack of oil.
The pipe bender uses the motor and pump connecting flange at the connection point between the motor and the pump to connect the drive between the oil pump and the motor. After research and improvement, the reasons for cracks during the bending process, induce the occurrence of cracks in the bending pipe. The protection of defects and micro-cracks, the deformation temperature in heating and bending the steel pipe exceeds a certain level, and micro-cracks will occur at the bending pipe, in both cases, they are related to the material of the bending pipe.
To make better use of the pipe bender and hydraulic pipe bender, the purpose of adding a compression valve on the pipe bender is to reduce the influence of the overload of the pipe bender and the sliding of the stainless steel pipe on the bending quality. According to the forming conditions, After bending, it is reassembled by heat treatment.
There will inevitably be some small problems during the processing of pipe bending products, such as micro-cracks during processing, resulting in defects in the formed products and affecting sales. Therefore, in the process of pipe bending, not only excellent technology and technology but also appropriate For example, in the process of product processing, if the temperature exceeds a certain range. The surface of the product will be deformed to a certain extent so that many small cracks will appear on the surface of the product, so it is necessary to reasonably control its temperature during processing.
Press bending is a process method for pipe bending. It uses a mold to bend the pipe blank on a hydraulic press. The bending has the advantages of simple mold adjustment and high production power, so it has been used in production, generally used for bending straight sections or bending heads pipe fittings.
Bending is a commonly used pipe bending method. Different bending equipment can be divided into manual bending and pipe bending machine bending. Manual bending does not require special bending equipment. The bending equipment is simple, low production cost, easy to adjust and adjust. It is mainly used in small-batch production occasions. According to whether there is a mandrel, the bending of the pipe bender can be divided into the cored pipe and coreless pipe.
Automobiles and machinery parts are used in machinery that has high requirements on the accuracy and smoothness of pipe bends. Due to the high precision of fine and bright pipe bends, the tolerance can be maintained at 2-8 wires. Therefore, many processing users are gradually turning into seamless pipes or pipes. The round steel is changed to fine and bright elbow to save manpower, material resources, and time.
The micro-cracks of the elbow are caused by unreasonable temperature on the one hand, and the quality of the materials used is not up to standard on the other hand. During the bending process, the equipment may be damaged due to high-speed deformation. These cracks require certain conditions. Combined with the actual processing situation. During the bending process, the length of the crack can reach the longitudinal axis perpendicular to the grain boundary, perpendicular to the tensile tube clamp. The mechanics and microcracks of bending equipment are studied at room temperature without affecting the tensile strength of the product.
For pipe bending products, the bending direction of different products with different radii and angles will also change, and such products will become an indispensable part of engineering pipes. If the wall thickness and bending mechanical properties of the product change, it will affect the quality of the product, so its technology is important when the product is processed.
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