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Method for manufacturing titanium alloy thick-wall pipe

A manufacturing method and technology of thick-walled pipes, which are applied in the processing and production of titanium alloy thick-walled pipes, and in the field of hot-drawn manufacturing of Ti-6Al-4V titanium alloy thick-walled pipes, can solve the problems of low yield, poor precision, and processing problems. Slow speed and other problems, to achieve the effect of high yield, high efficiency and good quality

Inactive Publication Date: 2010-09-22
沈阳德兴钛业有限公司
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  • Summary
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  • Description
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Problems solved by technology

However, due to the high deformation resistance of the alloy, it is difficult to produce pipes by the usual cold deformation method, and pipes with an outer diameter of less than 15 mm can only be produced by drilling mechanical processing methods
Its characteristics such as slow processing speed, poor precision, and low yield make this type of pipe very expensive

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] First, remove the surface scale and surface defects of the perforated tube blank by mechanical or sandblasting; then heat it to 300-800°C with a tubular resistance heating furnace or an intermediate frequency heating furnace; The double-chain stretching machine is heated on the top and stretched while lubricating, so that the diameter of the tube blank is reduced and the length is increased. After multi-pass stretching, the tube blank is stretched to the required size; then the stretched tube blank is pre-heated to the required temperature, and the cemented carbide peeling die with a jade ring cutter is used in a double-chain type Slow drawing is carried out on the stretching machine, and the oxide skin and defects on the surface of the tube blank are peeled off in the longitudinal direction; then both ends of the peeled tube blank are fixed on the stress leveler, and the electric current is used to heat it, and it is stretched while heating. until it is straightened; g...

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Abstract

The invention discloses a method for manufacturing a titanium alloy thick-wall pipe, which is suitable for thermal stretching manufacture of a Ti-6Al-4V titanium alloy thick-wall pipe. The method is characterized by comprising the following steps: (1) preparing a blank; (2) heating the pipe blank; (3) thermally stretching the pipe blank; (4) thermally scalping the pipe blank; (5) thermally straightening the pipe blank; (6) polishing a surface oxidation film; (7) fixing the size and blanking the pipe blank; and (8) polishing the pipe blank to obtain a qualified product. The method for producing the Ti-6Al-4V titanium alloy thick-wall pipe by adopting a new thermal stretching process overcomes the defect of the traditional drilling method, and has the characteristics of quick efficiency, good material, high yield and the like.

Description

technical field [0001] The invention relates to a method for manufacturing a titanium alloy thick-walled pipe, in particular to a method for manufacturing a Ti-6Al-4V titanium alloy thick-walled pipe by thermal drawing, which belongs to the processing and manufacturing technology for the titanium alloy thick-walled pipe. Background technique [0002] Ti-6Al-4V titanium alloy is widely used in aviation, navigation, medical equipment, biological implants and other fields due to its excellent properties such as high strength, corrosion resistance and good biocompatibility. Its consumption accounts for about 50% of the titanium consumption. A considerable amount of them needs to be supplied in pipes. However, due to the high deformation resistance of the alloy, it is difficult to produce pipes by the usual cold deformation method, and pipes with an outer diameter of less than 15 mm can only be produced by drilling machining methods. Its characteristics of slow processing speed...

Claims

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Application Information

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IPC IPC(8): B21C37/08B21C1/22B21C9/00B21D3/00B21D37/16B23D79/12
Inventor 曲占林刘兴复吴庆义
Owner 沈阳德兴钛业有限公司
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