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Non-flash forging process for middle flanges of transmission shafts

A technology of flange-free flying and transmission shaft, which is applied in the direction of manufacturing tools, engine components, metal processing equipment, etc., can solve the problems of waste of raw materials, need for trimming process, and existence of forging flash, so as to reduce production costs and reduce processing Cost, reduce the effect of forging difficulty

Inactive Publication Date: 2013-01-16
XUCHANG ZHONGXING FORGING +1
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0004] 1. The cavity is distributed in the upper and lower modules, which is prone to forging defects such as misalignment;
[0005] 2. There is forging flash, which wastes raw materials, and requires trimming, which naturally increases production costs;
[0006] 3. One more pre-forging mold cavity brings inconvenience to mold processing and increases mold processing cost

Method used

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  • Non-flash forging process for middle flanges of transmission shafts

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Embodiment Construction

[0027] The flash-free forging process for the intermediate flange of the transmission shaft of the present invention comprises the following steps:

[0028] (1) Blanking: Use a fully automatic sawing machine or shearing machine to cut 45# steel into billets of specified size;

[0029] (2) Medium frequency induction heating: the heating temperature of the billet is controlled between 1100° and 1200°, and the temperature control is based on the infrared thermometer;

[0030] (3) Upsetting: remove the scale on the surface of the billet;

[0031] (4) Final forging: place the upset blank in the forging mold, strike the mold and master the striking force;

[0032] (5) Punching: Punch out the middle skin part of the final forging.

[0033] Such as figure 1 As shown, the forging mold includes an upper module 1 and a lower module 2, the lower module 2 is provided with a mold cavity 3, the top of the lower module 2 is provided with a boss 4, and the bottom of the upper module 1 is pr...

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Abstract

The invention discloses a non-flash forging process for middle flanges of transmission shafts. The non-flash forging process includes steps of (1) blanking: blanking 45# steel into blanks in given size by a full-automatic sawing machine or shearing machine; (2), medium-frequency induction heating: controlling heating temperature of the blanks within the range of 1100-1200 DEG C on the basis of an infrared temperature measurement instrument; (3), upsetting: removing scales on surfaces of the blanks; (4), finish forging: placing the blanks into a forging die after upsetting, striking the die with moderated striking force; and (5), punching: removing middle slugs of finished forged parts. Processes of primary forging die are reduced, production cost is reduced, energy is saved while consumption is lowered, forging difficulty is reduced, flash is eliminated in a forging process of the prior art, raw materials are saved, and a subsequent process of grinding burrs is omitted.

Description

technical field [0001] The invention belongs to the technical field of the automobile industry, and in particular relates to a flash-free forging process for the middle flange of a transmission shaft. Background technique [0002] At present, the traditional forging process of forging the middle flange of the transmission shaft is: blanking → intermediate frequency induction heating → upsetting → pre-forging → final forging → trimming → punching, using this process to complete the forging of forgings, especially the pre-forging process not only Increased mold material costs, mold processing costs, and increased mold production cycle, which greatly increased production costs in mold production alone. In addition, the pre-forging process reduced labor production efficiency and increased labor hours. Increased labor production costs. In a word, producing the middle flange of the transmission shaft under the existing forging process not only increases the production cost but al...

Claims

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Application Information

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IPC IPC(8): B21J5/02B21J13/02B21K1/06
Inventor 和万松孟会涛丁圣杰刘其勇胡卫华郭艳珺张恒赵世启余学俊宋航郭洋洋史增峰王永桃陈喜乐安伟浩
Owner XUCHANG ZHONGXING FORGING
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