Forging process of external star wheel provided with handle

A technology of extraterrestrial wheels and craftsmanship, applied in the field of forging, can solve problems such as easy cracks on the surface of forgings, difficulty in maintaining consistent temperature of forgings, uneven thermal expansion and cold contraction of forgings, etc.

Active Publication Date: 2020-07-07
上海长特锻造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above existing technical solutions have the following defects: after the forging is heated and forged, it needs to be heat treated, and when the forging is cooled, it is difficult to ensure that the temperature inside and outside the forging is

Method used

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  • Forging process of external star wheel provided with handle
  • Forging process of external star wheel provided with handle
  • Forging process of external star wheel provided with handle

Examples

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Example Embodiment

[0044] The present invention will be further described in detail below in conjunction with the drawings.

[0045] Reference figure 1 , Is a flow chart of the forging process of a shank alien wheel in the embodiment of the present invention, figure 2 The specific flow chart of the sub-hot extrusion of the blank in the embodiment of the present invention, image 3 It is a specific flow chart of the forging piece cooling in the embodiment of the present invention, Figure 4 It is a schematic diagram of the structure of the cooling box 1. Figure 1-Figure 4 The specific steps of the forging process of the shank alien wheel are described in detail:

[0046] S1, blanking, cutting the original billet into a billet of the required length through a shearing machine;

[0047] S2, heating, using an intermediate frequency induction heating furnace to heat the billet, and the heating temperature is 980-1000℃;

[0048] S3. Sub-hot extrusion, using a single-point press for sub-hot extrusion forming...

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Abstract

The invention discloses a forging process of an external star wheel provided with a handle, and relates to the technical field of forging. The forging process comprises the following specific steps ofblanking, heating, sub-heat extrusion, stage-by-stage cooling, and cold finishing, wherein sub-heat extrusion comprises a pre-formation stage and a finish-forging formation stage. Stage-by-stage cooling comprises initial-stage cooling, middle-stage cooling and later-stage cooling. The forging process has the effects that a forging can be uniformly cooled, and the probability of cracks of the forging is lowered.

Description

technical field [0001] The invention relates to the technical field of forging, in particular to a forging process of an outer planetary wheel with a handle. Background technique [0002] At present, the outer star wheel is the main force-bearing part of the automobile transmission shaft, and its working conditions are extremely complicated. Its performance directly affects the reliability and safety of the automobile transmission. Forging is a processing method that uses forging machinery to apply pressure to metal blanks to cause plastic deformation to obtain forgings with certain mechanical properties, certain shapes and sizes. It is one of the two major components of forging. Forging can eliminate defects such as as-cast porosity produced in the metal smelting process and optimize the microstructure. At the same time, due to the preservation of complete metal flow lines, the mechanical properties of forgings are generally better than castings of the same material. [00...

Claims

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Application Information

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IPC IPC(8): B21J5/02B21J13/02B21J17/02B21K1/30B21K27/06B21K29/00B21C25/02
CPCB21J5/002B21J5/02B21K1/30B21K29/00B21J17/02B21J13/02B21K27/06B21C25/02
Inventor 林象张俊俊王振洲王欢陈国良
Owner 上海长特锻造有限公司
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