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Upsetting and drawing method of ring-shaped blank prefabricated by hollow steel ingot

A technology for upsetting and drawing long, hollow steel, applied in metal processing equipment and other directions, can solve the problem of difficult axial upsetting of annular blanks, etc., and achieve the effects of improving product performance, simplifying processes, and reducing fire times.

Active Publication Date: 2017-07-25
TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the disadvantages of the prior art, provide a method for upsetting and elongating the annular blank prefabricated by the hollow steel ingot, and solve the technical problem that the prior art is not easy to axially upset the annular blank

Method used

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  • Upsetting and drawing method of ring-shaped blank prefabricated by hollow steel ingot
  • Upsetting and drawing method of ring-shaped blank prefabricated by hollow steel ingot
  • Upsetting and drawing method of ring-shaped blank prefabricated by hollow steel ingot

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Embodiment Construction

[0029] Typical embodiments embodying the features and advantages of the present invention will be described in detail in the following description with reference to the accompanying drawings. It should be understood that the present invention can have various changes in different embodiments without departing from the protection scope of the present invention, and the descriptions and illustrations therein are essentially for illustration rather than for limit the invention.

[0030] Such as Figure 1 to Figure 7 As shown, a method for upsetting and elongating an annular blank prefabricated by a hollow steel ingot, the ratio of the height H of the annular blank 30 prefabricated by the hollow steel ingot to the wall thickness T is not more than 2.5 to 3, and the upsetting and elongating The specific steps of the method are:

[0031] (1) Place the lower backing ring 14 on the press table;

[0032] (2) Then place the mandrel 13 on the lower backing ring 14, and the mandrel chu...

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Abstract

The invention provides an upsetting stretching method of an annular billet preformed through a hollow ingot, relates to an annular billet upsetting stretching process, and aims at solving the problem of difficult axial upsetting of the annular billet in the prior art. The method specifically comprises the following steps: positioning a lower cushion ring on a worktable of a pressing machine; positioning a mandrel on the lower cushion ring; sleeving the annular billet with a mandrel cylinder bod; positioning the upper cushion ring on the upper end surface of the annular billet; arranging a hollow connecting rod on an upper cushion ring; downwards pressing a sliding block of the pressing machine to enable upsetting deformation of the annular billet; removing the hollow connecting rod and the upper cushion ring; removing the mandrel and the upset annular billet from an upsetting station to a stretching station; synchronously slightly pressing and rotating the upset annular billet through an upper stretching anvil and a lower stretching anvil so as to adjust the position relation; stretching the upset annular billet through the upper stretching anvil and the lower stretching anvil until an upset and stretched product is obtained. With the adoption of the method, a process of repeatedly upsetting and stretching the annular billet can be achieved; the heating number can be reduced, and moreover, the process is simplified; in addition, the product performance can be improved, and the production efficiency can be improved.

Description

technical field [0001] The invention belongs to the technical field of thermal processing of metal materials, and in particular relates to a method for upsetting and elongating a ring-shaped blank prefabricated by a hollow steel ingot. Background technique [0002] Ring forgings are commonly used parts in machinery manufacturing and have a wide range of applications. Traditionally, ring forgings are made of solid steel ingots, and the basic process is: upsetting—punching—drawing—reaming. Hollow steel ingot has the advantages of dense structure, small segregation, good homogeneity, energy saving and material saving, etc. It has great advantages to manufacture ring forgings with hollow steel ingots, and it is a development direction of ring forging manufacturing industry. [0003] The hollow steel ingot is chamfered, pre-expanded, and shaped to form a prefabricated ring blank of the hollow steel ingot. In view of the fact that the ring-shaped blank prefabricated by the hollo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21J5/06B21J5/08
CPCB21J5/002B21J5/06B21J5/08
Inventor 田继红禹兴胜宋玉冰郑晓华何文武段兴旺刘建生宋莉马园园郭丰伟王文浩
Owner TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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