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Production method of cam plate

A production method and cam piece technology, which is applied in the field of alloy processing, can solve the problems of heavy weight of the camshaft and waste of materials, etc., and achieve the effects of small change in forging size, improved forgeability, and low production cost

Active Publication Date: 2018-05-11
JIANGSU XINSHU FORGING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional camshaft manufacturing method mainly adopts the integral casting or integral forging of the camshaft blank, and then produces it by cutting, which leads to a lot of material waste and the overall weight of the camshaft is heavy

Method used

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  • Production method of cam plate

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Effect test

Embodiment 1

[0028] The production process of the cam sheet in this embodiment is: alloy smelting → casting steel ingot → hot rolling → diffusion annealing → blanking → blank forging → heating and punching → annealing → extrusion → machining → shot blasting treatment → quenching and tempering treatment → polishing Pill cleaning → inspection → finished product storage.

[0029] The method for producing alloy forged steel in this embodiment includes the following specific steps:

[0030] The first step is to cut the material. The steel is cut according to the size of the cam piece to obtain a blank. The steel is made by alloy smelting, casting steel ingots, hot rolling, and diffusion annealing processes in sequence. The composition of the steel alloy and its mass percentage are: carbon 0.5%, silicon 0.2%, manganese 0.85%, chromium 0.78%, aluminum 0.04%, phosphorus 0.01%, sulfur 0.006%, and the balance is iron and inevitable impurities. The existing conventional alloy melting technology is adop...

Embodiment 2

[0041] The production process of the cam sheet in this embodiment is: alloy smelting → casting steel ingot → hot rolling → diffusion annealing → blanking → blank forging → heating and punching → annealing → extrusion → machining → shot blasting treatment → quenching and tempering treatment → polishing Pill cleaning → inspection → finished product storage.

[0042] The method for producing alloy forged steel in this embodiment includes the following specific steps:

[0043] The first step is to cut the material. The steel is cut according to the size of the cam piece to obtain a blank. The steel is made by alloy smelting, casting steel ingots, hot rolling, and diffusion annealing processes in sequence. . The composition of the steel alloy and its mass percentage are: carbon 0.49%, silicon 0.18%, manganese 0.87%, chromium 0.76%, aluminum 0.05%, phosphorus 0.008%, sulfur 0.005%, and the balance is iron and inevitable impurities. The existing conventional alloy melting technology i...

Embodiment 3

[0054] The production process of the cam sheet in this embodiment is: alloy smelting → casting steel ingot → hot rolling → diffusion annealing → blanking → blank forging → heating and punching → annealing → extrusion → machining → shot blasting treatment → quenching and tempering treatment → polishing Pill cleaning → inspection → finished product storage.

[0055] The method for producing alloy forged steel in this embodiment includes the following specific steps:

[0056] The first step is to cut the material. The steel is cut according to the size of the cam piece to obtain a blank. The steel is made by alloy smelting, casting steel ingots, hot rolling, and diffusion annealing processes in sequence. The composition of the steel alloy and its mass percentage are: carbon 0.49%, silicon 0.18%, manganese 0.87%, chromium 0.76%, aluminum 0.05%, phosphorus 0.008%, sulfur 0.005%, and the balance is iron and inevitable impurities. The existing conventional alloy melting technology is a...

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Abstract

The invention relates to a production method of a cam piece. The production method of the cam piece comprises the following steps: 1, feeding, wherein the mass percentage of alloy components is as follows: 0.48 percent to 0.53 percent of carbon, 0.15 percent to 0.30 percent of silicon, 0.80 percent to 1.00 percent of manganese, 0.70 percent to 0.85 percent of chromium, 0.02 percent to 0.05 percent of aluminum, less than or equal to 0.03 percent of phosphorus, less than or equal to 0.02 percent of sulfur and the balance of iron and unavoidable impurities; 2, forging workblanks; 3, heating and punching; 4, annealing; 5, performing hole extrusion; 6, machining; 7, performing shot blasting treatment; and 8, performing hardening and tempering treatment. According to the production method of the cam piece, provided by the invention, the rate of finished products is high, and the produced cam piece has high precision and excellent comprehensive mechanical performance.

Description

Technical field [0001] The invention relates to a production process of a cam and belongs to the technical field of alloy processing. Background technique [0002] With the continuous improvement of engine power and economic requirements, people also put forward higher requirements for the comprehensive performance of the camshaft. On the premise of ensuring product strength and reliability, the design and manufacture of camshafts should have the characteristics of compact structure, light weight, material optimization and simplified processing procedures to achieve the purpose of light weight and low cost. [0003] The traditional camshaft manufacturing method mainly adopts integral casting or integral forging of the camshaft blank, and then produces it through cutting processing. There is a lot of waste of material and the overall weight of the camshaft is heavier. Assembled camshaft is to divide the camshaft into several assemblable parts such as cam discs, mandrels, journals, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/18C22C38/06C22C38/04C22C38/02B23P15/00
CPCB23P15/00C22C38/02C22C38/04C22C38/06C22C38/18
Inventor 徐军
Owner JIANGSU XINSHU FORGING CO LTD
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