Technology method relating to component in manufacturing artificial limb knee-joint

Abstract

The present invention discloses a technology method about manufacture of the related components in a prosthetic knee. In the method, forging process is replaced by precise casting technology of the silica sol. The relative art procedure and the art parameter are as follows. Step a comprises preparation of aluminum alloy material with high intensity, which comprises 4.6 to 5.3 Cu, 0.3 to 0.5 Mn, nomore than 0.06 Si, no more than 0.30 Fe and no more than 0.60 other impurity amount, besides the main element A1. Step B comprises melting and casting with the melting temperature of 680 DEG C to 720DEG C and the casting temperature of 680 DEG C to 700 DEG C. Step c, the heat treatment process comprises a solution treatment at 533 DEG C to 543 DEG C for 10 hours to 18 hours and an aging treatment at 170 DEG C to 180 DEG C for 4 hours to 5 hours. Technology in the present invention greatly simplifies processing procedure of the related components in a prosthetic knee. The product is molded byone time injection, which eliminated a plurality of cutting procedure and hammering procedure. Therefore working efficiency and utilization ratio of the metal material are improved, which not only simplifies the device and the procedure, but also reduces the production cost. The present invention is convenient for forming production capacity with massive size.

Description

technical field [0001] The invention relates to a manufacturing method of an artificial limb, in particular to a manufacturing method of related components in the knee joint of the artificial limb. Background technique [0002] The existing production process of the relevant parts in the knee joint is to forge the blank shape for many times, and then from preliminary processing to finishing processing. Costs remain high. The annual demand for such parts is very large, and currently basically depends on imports, and the price in the domestic market is relatively high, but the majority of disabled people with middle and low incomes cannot afford it at all. [0003] Silica sol precision casting This method is to inject fusible molding material into the mold (in the mold) to make an investment pattern, assemble it into a module, and then coat the surface of the module with a refractory material and a silica sol binder. The finished liquid paint is then sprinkled with refractor...

AI Technical Summary

Problems solved by technology

Compared with the manufacture of related components in prosthetic knee joints with complex shapes and high strength requirements, due to the limitations of traditional techniques, there is no such method yet.

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