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Gear shaft rolling forging process

A gear shaft and process technology, used in manufacturing tools, metal processing equipment, forging/pressing/hammer devices, etc., can solve the problems of complex production process, low material utilization rate, large energy consumption, etc., and achieve simple processing technology and material. The effect of high utilization rate and high production efficiency

Inactive Publication Date: 2019-02-22
CHONGQING LUCHI MACHINERY MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The above-mentioned production process is relatively complicated, the material utilization rate is low, the energy consumption is large, the productivity is low, and the cost is high

Method used

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  • Gear shaft rolling forging process

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Embodiment Construction

[0016] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention will be further described below in conjunction with the examples.

[0017] The gear shaft rolling and forging process comprises the following steps,

[0018] Step 1, pouring a cylindrical bar blank, and intercepting the length of the bar blank according to the size;

[0019] Step 2, shot blasting, sending the blank into the shot blasting machine for sandblasting to increase the surface Ra value;

[0020] Step 3, heating the billet, putting the billet into an induction heating furnace and heating to 1000°C to 1100°C;

[0021] Step 4. Place the heated blank in the cavity formed by the upper and lower molds at the staggered positions. When the upper and lower molds reciprocate left and right, the blank is rolled and formed in the cavity.

[0022] The chemical composition weight percent in the cylindrical billet poured in step 1 is: 0.8%-...

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Abstract

The invention discloses a gear shaft rolling forging process. The process comprises the following steps of 1, casting a cylindrical bar blank, and cropping the length of the bar blank according to thesize; 2, shot blasting, specifically, the blank is fed into a shot blasting machine to be subjected to sand blasting treatment; 3, heating the blank, specifically, the blank is placed into an induction heating furnace to be heated to 1000 DEG C to 1100 DEG C; and 4, placing the blank after being heated in a cavity formed by an upper die and a lower die which are at the staggered positions, and when the upper die and the lower die carry out left-right reciprocating motion in the opposite direction, the blank is formed in the cavity in a rolling mode. The machining process is simple, the material utilization rate is high, the production efficiency is high, and the cost is low; and according to the process, elements including C, Mn, Si, Cr, W, V, Cu, Mo, P and S are added into the bar blank,the mechanical properties such as the wear resistance and the hardness of a gear shaft can be improved.

Description

technical field [0001] The invention relates to the field of gear shaft processing, in particular to the rolling and forging process of a symmetrical stepped gear shaft. Background technique [0002] At present, the most common method of processing gear shafts is cutting, and the processing methods are: forging blank——heat treatment after forging——primary processing of shaft portion—rough hobbing—semi-finishing—finish hobbing—finishing ——Inspection, the forming method for medium and long gear shafts is: forging blank—rough machining of shaft portion—finish forging of tooth portion—heat treatment after forging—friction welding of tooth portion and shaft portion—semi-finishing—finishing Processing - inspection. The above-mentioned production process is relatively complicated, the material utilization rate is low, the energy consumption is large, the productivity is low, and the cost is high. Contents of the invention [0003] The purpose of the present invention is to prov...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21K1/06B21J5/00B21J13/02C22C38/04C22C38/02C22C38/22C22C38/24C22C38/20C22C38/60
Inventor 杨建
Owner CHONGQING LUCHI MACHINERY MFG