A Cold Extrusion Forming Method for Axisymmetric Tie Rod Joint Parts

Abstract

The invention relates to a cold extrusion forming method of an axisymmetric pull rod joint part. The cold extrusion forming method comprises the following steps: (1) preparing a pull rod joint workblank; (2) annealing the workblank, so as to soften the workblank; (3) performing shot blasting on the annealed workblank, so as to eliminate burrs and oxide skins; (4) phosphatizing and saponifying the workblank after shot blasting; (5) putting the workblank into a blank preparation die, so as to prepare blanks and obtain the blanks; (6) pressing the blanks; (7) phosphatizing and saponifying the blanks; (8) putting the blanks into a forming die and performing cold extrusion forming; and (9) machining a formed part, so as to prepare the axisymmetric pull rod joint part. Compared with the prior art, the extrusion production method for producing the pull rod joint part has the advantages that the production process is perfect, the material utilization ratio is high, the mechanical property of the part is good, the production cost is low, the required equipment tonnage is low, and the method conforms to the requirement of modern green manufacturing and has great social benefits.

Description

Technical field [0001] The invention relates to the technical field of plastic processing of metal materials, in particular to a cold extrusion forming method of axisymmetric tie rod joint parts for automobiles. Background technique [0002] In the manufacturing industry, there are often some mechanical parts with high material strength and complex shapes that need to bear high loads during work and play an important role in the system. These parts have high requirements for dimensional accuracy and mechanical properties. There are generally two traditional forming processes for this type of parts: direct cutting with raw materials; cutting after hot forging. [0003] For the first method, the mechanical properties of parts are difficult to meet the requirements, and the utilization rate of materials is very low, which will make the cost of the product very high, and it has been basically eliminated in the increasingly fierce market competition. At present, the second method is mo...

AI Technical Summary

Problems solved by technology

This method has a high heating temperature, which greatly reduces the deformation resistance of the material, and the plastic deformation process is relatively easy, but its shortcomings are still obvious.

First of all, although the mechanical properties of the product are improved compared with the first one after plastic processing, due to the high heating temperature, the workpiece is accompanied by serious oxidation, decarburization, overheating, overburning and other phenomena during forming, which affects the quality of the product. quality of use

Secondly, although the combination of forging and cutting processing has greatly improved the material utilization rate of the product compared with the first one, it still cannot meet the urgent requirements of "green manufacturing" due to the increasing shortage of raw materials in modern society.

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