Manufacturing method for high-strength and high-precision small taper angle part

Abstract

The invention discloses a manufacturing method for a high-strength and high-precision small taper angle part and belongs to the technical field of precise plastic processing. The manufacturing method comprises the following steps that (1) a machining method is adopted to obtain blanks; (2), a cold spinning process method is adopted to finish forming of the high-strength and high-precision small taper angle part; and (3), according to the requirement of a drawing, follow-up machining is finished, and a product is obtained. The prepared product is high in strength, good in forming precision, and good in product uniformity, the structure and mechanical performance of the part after forming can be improved, and the quality of the product is greatly improved. The preparation method for the blanks is simple and easy. The cold spinning process is adopted to obtain the small taper angle part through once-forming. Operation is easy, the production procedure is simplified greatly, spinning machining is fast in beat, and the production efficiency is high. The cold machining mode is used to obtain the small taper angle part, so that the defects that the utilization rate of materials machined by a traditional ring forging machine is not high and gas in the process of winded welding is harmful and risky to human bodies are overcome, and meanwhile, enormous energy is saved.

Description

technical field [0001] The invention relates to the technical field of precise plastic processing, in particular to a method for manufacturing high-strength, high-precision, small-cone-angle parts. Background technique [0002] Parts with small cone angles are common parts in mechanical manufacturing. With the development of science and technology, their applications are becoming more and more extensive, involving many application fields such as aviation, aerospace, and pressure vessels. [0003] At present, most of the processing and manufacturing of parts with small cone angles is completed by rolling welding or forging ring machining. The main technological shortcomings are as follows: (a) Low product strength: the product strength is similar to that of the base material, and the overall strength is relatively low, especially The weakening of the strength of the weld is more serious, often less than 90% of the base metal; (b) low dimensional accuracy: for long cone parts,...

AI Technical Summary

Problems solved by technology

[0003] At present, most of the processing and manufacturing of parts with small cone angles is completed by rolling welding or forging ring machining. The main technological shortcomings are as follows: (a) Low product strength: the product strength is similar to that of the base material, and the overall strength is relatively low, especially The weakening of the strength of the weld is more serious, often less than 90% of the base metal; (b) low dimensional accuracy: for long cone parts, the wall thickness tolerance of forging ring machine products is relatively large, often exceeding 0.2mm; coil welding products The wall thickness of the plate will introduce the deviation of the plate wall thickness. In addition, due to the welding stress and welding deformation at the weld, the roundness of the product is poor, and the consistency is not good; (c) There are many processes and the production efficiency is low; (d ) High hidden dangers in product use: For welded parts, welding seam inspection is relatively cumbersome, which often becomes a potential hidden danger in subsequent testing and use

[0004] For tapered parts, currently the slab shearing and spinning process is mainly used to obtain, but for small cone angle parts with a cone angle less than 15°, due to the risks of peeling and cracking in the traditional slab shearing and spinning process Extremely high, there are technical bottlenecks

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