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Wedge cross-rolling two cycle roll-forming method for train shaft blank

A technology for cross wedge rolling and train axles, applied in the field of metal plastic forming, can solve the problems of difficult technical implementation, high manufacturing difficulty and high cost, and achieve the effects of reducing processing procedures, stable production process and low production cost

Inactive Publication Date: 2008-05-28
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Such a large machine and mold must have large investment, high cost, difficult manufacturing, and difficult technical implementation

Method used

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  • Wedge cross-rolling two cycle roll-forming method for train shaft blank
  • Wedge cross-rolling two cycle roll-forming method for train shaft blank
  • Wedge cross-rolling two cycle roll-forming method for train shaft blank

Examples

Experimental program
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Effect test

Embodiment Construction

[0033] figure 2 , Figure 7 It is a mold diagram of an implementation example of forming a train axle blank by cross-wedge rolling with two turns. Figure 7 It is the expansion diagram of the mold pass. image 3 It is the billet Φ260×1070mm. The billet is heated to 1000°C to 1200°C, and is fed between two co-rotating molds through an axial feeding device for rolling. The diameter of the top circle of the mold is φ1700mm. Figure 4 , Figure 5 Respectively, the parts diagrams formed after the first and second rounds of rolling are completed.

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Abstract

A technology for forming the axle bank of train by using wedge dies to roll it by two-turns includes such steps as heating a circular blank to 1000-1200 deg.C, feeding it between two die sets with at least one pair of internal wedges and one pair of external wedges, rotating the die sets by one turn while rolling it by internal wedges, and rotating the die sets by another turn while rolling it by external wedges.

Description

technical field [0001] The invention belongs to the technical field of metal plastic forming, and in particular provides a two-round cross-wedge rolling forming method for a train axle blank, which is suitable for the cross-wedge rolling production of the train axle blank. technical background [0002] Cross wedge rolling is a new technology and new technology for forming shaft parts. This technology is the intersection, extension and development of metallurgical rolling technology and mechanical processing technology. Compared with traditional metallurgical rolling, it realizes the deep processing of materials, that is, Developed from rolling constant-section profiles to producing variable-section parts. Compared with the traditional forging process, the transformation from intermittent overall forming to continuous partial forming plays a very important role in the production of metallurgical industry and machinery industry. This technology has the characteristics of high...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21H1/22B21B1/08B21B27/02B21B37/74
Inventor 王宝雨胡正寰张康生束学道周永平
Owner UNIV OF SCI & TECH BEIJING
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