Forging process of stepped shaft with large diameter differences

A stepped shaft, a relatively large technology, applied in the forging process of stepped shafts, can solve the problems of long processing time, low production efficiency, waste of materials, etc., and achieve the effect of improving productivity

Inactive Publication Date: 2020-10-13
盐城中德精锻股份有限公司
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AI Technical Summary

Problems solved by technology

[0002] The traditional stepped shaft adopts the production process of machining, which needs to remove a large amount of metal materials, so the processing time is long, the production efficiency is low and the material waste is serious
There is also a forging process, the adopted scheme is that the diameter of the d1 step is the same as that of the d2 step, this scheme has been greatly improved compared with the traditional scheme, but the phenomenon of material waste still exists in the d1 part

Method used

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  • Forging process of stepped shaft with large diameter differences
  • Forging process of stepped shaft with large diameter differences

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Embodiment Construction

[0013] The specific content of the present invention will be described in detail below with reference to the drawings and specific embodiments.

[0014] Such as figure 1 , figure 2 As shown, a forging process of stepped shafts with large diameter differences includes the following process steps: blanking, shot blasting, first heating, coating, second heating, forward extrusion, forming, stress relief annealing, polishing Saponify pellets, reduce diameter, and take end faces.

[0015] In this embodiment: the cutting: according to the selected diameter of the round steel, a circular saw is used to saw the material, and the weight of the saw material is the weight of the forging blank. The first heating: the bar is heated by induction intermediate frequency heating to 600-650°C; the second heating: the bar is heated by induction intermediate frequency heating to 800 -820°C. The forward extrusion: under the pressure of the hydraulic press, two steps d3 and d4 are extruded, and the ...

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Abstract

The invention discloses a forging process of a stepped shaft with large diameter differences. The forging process of the stepped shaft with large diameter differences includes the following process steps of: blanking, shot blasting, first heating, coating, second heating, forward extrusion, forming, stress relief annealing, shot blasting phosphorus saponification, reducing diameter, and taking endfaces. The advantages of the forging process of the stepped shaft with large diameter differences are as follows: the phenomenon of material waste in part d1 can be solved well; and the step d1 is the same as other steps, leaving only a certain machining allowance, which greatly improves the productivity.

Description

Technical field [0001] The invention relates to a forging process of stepped shafts with large diameter differences. Background technique [0002] The traditional stepped shaft uses a machining production process, which requires a large amount of metal materials to be removed, so the processing time is long, the production efficiency is low, and the material waste is serious. There is also a forging process. The scheme adopted is that the diameter of the d1 step is the same as the diameter of the d2 step. This scheme has a great improvement compared with the traditional scheme, but there is still a waste of material in the d1 part. Summary of the invention [0003] The technical problem to be solved by the present invention is to provide a forging process for stepped shafts with large diameter differences. [0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: a forging process of stepped shafts with large diameter diffe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00B23P15/14
CPCB23P15/00B23P15/14
Inventor 沈建华冯飞
Owner 盐城中德精锻股份有限公司
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