Low-melting point alloy for machining connecting conduct, its production and use

Abstract

This invention belongs to the machinery processing technology, it relates to the improvement of the bending and machining method of the tubing especially to the thin-wall tubing or the similar thin-wall part. The low-melting alloy in this invention, whose proportion by weight of the component contents is as following: Lead 25- 32%, tin 12- 15%, cadmium 9- 13%, zinc 0- 4%, stibium 0- 5%, bismuth margin. The low-melting alloy can ensure the request of ellipse degree of the pipe after processing, and it can eliminate cockles, corrugation.

Description

technical field

[0001] The invention belongs to mechanical processing technology, and relates to the improvement of the bending and machining method of pipes, especially thin-walled pipes or similar thin-walled parts. Background technique

[0002] Catheters, especially thin-walled pipes or similar thin-walled parts, are prone to oval deformation, wrinkles, and corrugations when they are bent. When it is machined, such as milling the surface or turning the mouth, it is prone to deformation and gaps. At present, the method of filling the pipe with rosin is generally used to enhance its strength before bending and machining, but the rosin is brittle and fragile due to force during processing, which affects the internal support effect of the pipe, and the crushed rosin at the end of the pipe affects the accuracy of the machine tool, which is very difficult. It is difficult to process qualified parts. Contents of the invention

[0003] The purpose of the present invention is ...