Forging method for alloy femoral component forged part

Abstract

The invention provides a forging method for an alloy femoral component forged part, which can improve the percent of pass of the angle of an collodiaphyseal angle, improve the dimensional precision ofthe forged part and improve the mechanical property of the forged part so as to ensure the percent of pass of the alloy femoral component forged part and prolong the service life of the alloy femoralcomponent forged part. The forging method comprises the following steps of S1, designing a femoral component die; partitioning a die cavity according to an area of a cross section of the die cavity;and taking a cavity partition with the minimum cross section as a reference partition and reducing the height of a bridge part thereof for other cavity partitions according to a ratio of the cross sections of the other cavity partition and the reference partition; S2, pre-forging a femoral component blank of an alloy material for precision forging; S3, performing flash-cutting, polishing and trimming treatment on the pre-forged femoral component blank; S5, finally forging the collodiaphyseal angle of the heated femoral component blank after pre-bending; and S6, treating the forged femoral component product to obtain a product femoral component.

Description

technical field [0001] The invention relates to the technical field of precision forging, in particular to a forging method of an alloy femoral stem forging. Background technique [0002] The artificial hip joint is composed of a femoral stem, an acetabular cup, and a liner. The femoral stem is mainly forged from high-nitrogen stainless steel, titanium alloy, cobalt-chromium-molybdenum alloy, and high-temperature alloy. Compared with TC4 titanium alloy and stainless steel, the elastic modulus of CoCrMo alloy is closer to bone tissue (the elastic modulus of bone tissue is 10~14GPa), which can reduce the structural discomfort between the implant and bone tissue; experiments have proved that from Most of the CoCrMo alloy joints taken from the human body have no corrosion phenomenon. Therefore, the artificial joint of CoCrMo alloy is very widely used in the market. Such as figure 1 Shown is a schematic structural diagram of a CoCrMo alloy femoral stem, which includes: head 1,...

AI Technical Summary

Problems solved by technology

[0003]In order to solve the existing forging method of alloy femoral stem forgings, the neck-shaft angle of the alloy femoral stem is too large, and the size and mechanical properties of the forging do not meet the quality requirements Problem, the present invention provides a forging method of alloy femoral stem, which can improve the pass rate of neck-shaft angle angle, improve the dimensional accuracy of forgings, improve the mechanical properties of forgings, and then ensure the pass rate of alloy femoral stem and increase its service life

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