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A kind of forging method of steel bimetal cracking connecting rod

A technology for cracking connecting rods and bimetals, which is used in manufacturing tools, metal processing equipment, forging/pressing/hammer devices, etc., to achieve the effect of improving quality, solving bonding quality, and ensuring overall mechanical properties

Active Publication Date: 2018-12-14
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The purpose of the present invention is to provide a forging method for steel bimetal cracking connecting rods in view of the above problems, which can solve the problem that ordinary medium carbon steel and medium carbon alloy steel cannot be used for the production and manufacture of cracking connecting rods

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  • A kind of forging method of steel bimetal cracking connecting rod
  • A kind of forging method of steel bimetal cracking connecting rod
  • A kind of forging method of steel bimetal cracking connecting rod

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Embodiment Construction

[0041] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments, but the protection scope of the present invention is not limited thereto.

[0042] A method for forging a steel bimetal cracking connecting rod specifically follows the steps:

[0043] S1: The casting slab of steel bimetal cracking connecting rod is prepared by casting process, and the casting slab is composed of connecting rod body 1, cracking zone 2 and connecting rod cover 3, such as figure 1 and figure 2As shown, wherein the material of the cracking zone 2 is set as the cracking material, between the connecting rod body 1 and the connecting rod cover 3; the material of the connecting rod body 1 and the connecting rod cover 3 is set as the main body material; the The main material is medium-carbon steel or medium-carbon alloy steel; the cracked material is high-carbon alloy steel with a carbon content of 0.7% to 1.2%, and its metal...

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Abstract

The invention provides a method for forging a steel bimetallic fracture splitting connecting rod. The method comprises the following steps that S1, a casting blank of the steel bimetallic fracture splitting connecting rod is prepared through a casting process, and the casting blank is composed of a connecting rod body, a fracture splitting area and a connecting rod cover; S2, the casting blank is subjected to normalizing treatment and used for removing network cementite in a fracture splitting material and an interface area, and a bimetallic interface is promoted to form a continuous diffusion layer; S3, the casting blank is forged, and the flowing direction of the fracture splitting material is controlled through a forging die; S4, burrs on the surface of a forged part are cleared away, and shot blasting treatment is carried out; S5, the forged part is subjected to thermal refining, the mechanical performance of the connecting rod meets requirements, and the fracture splitting brittleness of the fracture splitting material is guaranteed; and S6, a fracture splitting groove is formed, fracture splitting and reassembly are carried out, and finally the finished steel bimetallic fracture splitting connecting rod is obtained. The limit of the fracture splitting connecting rod on the material can be broken through, and the problem that alloy steel cannot be used for producing and manufacturing the fracture splitting connecting rod is solved.

Description

technical field [0001] The invention belongs to the field of forging research of transmission power component materials, and in particular relates to a forging method of a steel bimetal cracking connecting rod. Background technique [0002] The connecting rod, as a key component for power transmission inside the engine, not only bears the air pressure generated by the combustion chamber, but also needs to bear the constantly changing load, which requires the connecting rod to have high strength, high hardness, and good comprehensive mechanical properties. The traditional connecting rod manufacturing is first through integral forging, then sawing, milling, and grinding the main body of the connecting rod and the end face of the connecting rod cover, and finally process the bolt holes on the connecting rod body and the connecting rod cover, and realize the combination of the two through connecting bolts. Pack. The processing technology of the traditional connecting rod is too...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21K3/00B21K27/00B21J5/02B21J13/02B21J5/00C21D1/28C21D1/25C21D9/00
CPCB21J5/002B21J5/02B21J13/02B21K3/00B21K27/00C21D1/25C21D1/28C21D9/0068
Inventor 姜银方王科委康志强姜文帆沙德利
Owner JIANGSU UNIV
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