Vehicle connecting rod blank machining process

An automobile connecting rod and blank processing technology, which is applied in the field of auto parts, can solve the problems of high energy consumption, complicated process, and unsatisfactory performance of connecting rod blanks, and achieves the effects of good dispersion, more toughness and less voids.

Pending Publication Date: 2021-06-18
江苏派欧汽车零部件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the existing connecting rod blank materials in the prior art have high energy consumption and complicated process, and the performance of the connecting rod blank cannot meet the needs of the growing engine industry

Method used

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  • Vehicle connecting rod blank machining process

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Experimental program
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Effect test

Embodiment 1

[0030] 1) Determine the size of the automobile connecting rod blank to be processed, and select the die forging groove corresponding to the size. The die forging size of the automobile connecting rod blank is: the height of the small head hole is 65mm, the minimum height is 25mm, and the thickness is 8mm , the thickness of the wedge-shaped end face is 7.5mm;

[0031] 2) Take raw materials according to parts by weight: 200 parts of cast steel powder, 15 parts of manganese powder, 10 parts of copper powder, 5 parts of chromium powder, 3 parts of cobalt powder, 3 parts of molybdenum powder, 3 parts of silicon carbide powder, 3 parts of aluminum nitride powder 2 parts, 2 parts of barium titanate powder, 3 parts of zinc stearate, 3 parts of tungsten sulfide powder, wherein, the mass fraction of each component in the cast steel powder is as follows: C: 0.9-1.1%, Mn: 0.8-1.0 %, Si: 0.4-0.6%, the balance is Fe, the cast steel powder, manganese powder, copper powder, chromium powder, c...

Embodiment 2

[0038] 1) Determine the size of the automobile connecting rod blank to be processed, and select the die forging groove corresponding to the size. The die forging size of the automobile connecting rod blank is: the height of the small head hole is 65mm, the minimum height is 25mm, and the thickness is 8mm , the thickness of the wedge-shaped end face is 7.5mm;

[0039] 2) Take raw materials according to parts by weight: 150 parts of cast steel powder, 10 parts of manganese powder, 5 parts of copper powder, 3 parts of chromium powder, 2 parts of cobalt powder, 2 parts of molybdenum powder, 2 parts of silicon carbide powder, 2 parts of aluminum nitride powder 1 part, 1 part of barium titanate powder, 2 parts of zinc stearate, 2 parts of tungsten sulfide powder, wherein, the mass fraction of each component in the cast steel powder is as follows: C: 0.9-1.1%, Mn: 0.8-1.0 %, Si: 0.4-0.6%, the balance is Fe, the cast steel powder, manganese powder, copper powder, chromium powder, coba...

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Abstract

The invention discloses a vehicle connecting rod blank machining process, and belongs to the field of vehicle parts. The vehicle connecting rod blank machining process comprises the following steps of (1) determining the size of a to-be-machined vehicle connecting rod blank and selecting a die forging groove with the corresponding size; (2) taking raw materials according to the weight part; (3) mixing zinc stearate and tungsten sulfide powder in the step (2), drying and grinding the mixture into powder of 800 meshes or above; (4) stirring the raw materials in the step (2); (5) pressing the raw materials into blocks; and (6) conducting sintering treatment. Tungsten sulfide is used in raw materials, so that the powder is good in dispersity and lubricity, the density of a workpiece is improved, gaps of a finished product are few, the strength of the vehicle connecting rod blank is greatly improved, the forging pressure and temperature are reduced, energy is saved, forging forming is easy, toughness is greatly improved after the forging, and demolding performance is good.

Description

technical field [0001] The present application relates to the field of auto parts, in particular to a machining process for an automotive connecting rod blank. Background technique [0002] Automobile connecting rods are important parts in automobiles. Automobile connecting rods are important parts of automobile engines. With the rapid development of the automobile industry, the production and sales of connecting rods have increased significantly. The connecting rod bears high periodic impact force, inertial force and bending force in the working process, and its quality directly affects the performance of the engine. At present, high-performance engines put forward higher requirements for connecting rods, which must have high strength and rigidity, as well as high toughness, purity and fatigue performance. Most of the existing connecting rod blank materials in the prior art have high energy consumption and complicated process, and the performance of the connecting rod blan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F5/00B22F3/17B22F3/24C22C38/02C22C38/04
CPCB22F3/17B22F3/24B22F5/00B22F2003/248C22C38/02C22C38/04
Inventor 袁泽庆
Owner 江苏派欧汽车零部件有限公司
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