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Rocker arm for intake valve of automobile engine and manufacturing process

A technology of automobile engine and manufacturing process, applied in the direction of engine components, machines/engines, manufacturing tools, etc., can solve the problems of poor impact resistance, material waste cost, short service life, etc., and achieve good impact resistance. , not easy to wear, avoid the effect of cost increase

Pending Publication Date: 2021-03-05
安福锦湖(湖南)气门有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the invention is to provide a rocker arm used on the intake valve of an automobile engine and its manufacturing process, which solves the problem that although the rocker arm has high hardness, its toughness is too low and its impact resistance is poor. The pores are easy to cause abrasive wear, the service life is short, and the waste of materials and the increase of cost are caused by frequent replacement.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A rocker arm used on the intake valve of an automobile engine, the rocker arm includes a base body and a wear-resistant layer coated on the base body;

[0042] The matrix includes the following components by mass percentage:

[0043] C: 0.50%, Si: 3.0%, Mn0.8%, Cu: 2.0%, Mo: 0.2%, Cr: 1.0%, W: 0.50%, Ce: 0.2%, Ni: 0.1%, and the balance is Fe;

[0044] The wear-resistant layer includes the following raw materials: 38% by weight of binder, 44% by weight of wear-resistant filler and 18% by weight of lubricant.

[0045] The binder is epoxy resin, the wear-resistant filling is nano-alumina, and the lubricant is tungsten disulfide.

[0046] A manufacturing process for a rocker arm on an automobile engine intake valve, the manufacturing process includes the following steps:

[0047] Step 1. Prepare batching according to the composition of the matrix, and ball mill and mix evenly after batching until the average particle size is 50 μm;

[0048] Step 2, melting the mixed matr...

Embodiment 2

[0060] A rocker arm used on the intake valve of an automobile engine, the rocker arm includes a base body and a wear-resistant layer coated on the base body;

[0061] The matrix includes the following components by mass percentage:

[0062] C:0.60%, Si:3.4%, Mn0.9%, Cu:2.8%, Mo:0.4%, Cr:1.5%, W:0.6%, Ce:0.2%, Ni:0.4%, the balance is Fe;

[0063] The wear-resistant layer includes the following raw materials: 45% by weight of binder, 40% by weight of wear-resistant filler and 15% by weight of lubricant.

[0064] The binder is epoxy resin, the wear-resistant filler is silicon carbide, and the lubricant is molybdenum disulfide.

[0065] A manufacturing process for a rocker arm on an automobile engine intake valve, the manufacturing process includes the following steps:

[0066] Step 1. Prepare batching according to the composition of the matrix, and ball mill and mix evenly after batching until the average particle size is 50 μm;

[0067] Step 2, melting the mixed matrix raw ma...

Embodiment 3

[0079] A rocker arm used on the intake valve of an automobile engine, the rocker arm includes a base body and a wear-resistant layer coated on the base body;

[0080] The matrix includes the following components by mass percentage:

[0081] C:0.80%, Si:4.1%, Mn1.0%, Cu:3.5%, Mo:0.5%, Cr:2.5%, W:1.0%, Ce:0.3%, Ni:0.5%, the balance is Fe;

[0082] The wear-resistant layer includes the following raw materials: 50% by weight of binder, 35% by weight of wear-resistant filler and 15% by weight of lubricant.

[0083] The binder is epoxy resin, the wear-resistant filler is titanium dioxide, and the lubricant is graphite.

[0084] A manufacturing process for a rocker arm on an automobile engine intake valve, the manufacturing process includes the following steps:

[0085] Step 1. Prepare batching according to the composition of the matrix, and ball mill and mix evenly after batching until the average particle size is 50 μm;

[0086] Step 2, melting the mixed matrix raw materials, an...

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Abstract

The invention discloses a rocker arm for an intake valve of an automobile engine. The rocker arm comprises a base body and a wear-resistant layer coating the base body, wherein the base body comprisesthe following components in percent by mass: 0.50%-0.80% of C, 3.0%-4.1% of Si, 0.8%-1.0% of Mn, 2.0%-3.5% of Cu, 0.2%-0.5% of Mo, 1.0%-2.5% of Cr, 0.50%-1.0% of W, 0.2%-0.3% of Ce, 0.1%-0.5% of Ni and the balance Fe; the wear-resistant layer comprises the following raw materials in percent by weight: 35-50% of a binder, 25-45% of wear-resistant filler and 15-20% of a lubricant. The process comprises the following steps: preparing materials according to the components of a base body, smelting, quenching and tempering, and carrying out heat treatment; carrying out nitriding treatment; and carrying out surface finish treatment, and spraying wear-resistant layer material particles in a molten or semi-molten state onto the base body subjected to surface finish treatment to obtain the rocker arm. The rocker arm is high in hardness, good in toughness, good in impact resistance and abrasion-resistant, the service life of the rocker arm is prolonged, and material waste and cost increase are avoided.

Description

technical field [0001] The invention relates to the technical field of parts manufacturing on an automobile engine, in particular to a rocker arm used on an intake valve of an automobile engine and a manufacturing process thereof. Background technique [0002] The existing rocker arm used on the intake valve of the automobile engine is generally composed of a rocker body made of steel and an insert made of high-carbon and high-chromium powder material. The insert is welded on the rocker body. Due to the existence of virtual welding or false welding between the rocker arm body and the insert, the insert falls off, and the insert is made of high-carbon and high-chromium powder material, so that the insert itself has a There are many tiny pores, so that although the rocker arm has high hardness, its toughness is too low and its impact resistance is poor. During use, many tiny pores are easy to cause abrasive wear, and its service life is short. Permanent replacement results in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/04C22C38/34C22C38/42C22C38/44C23C8/26C21D1/25C21D6/00C21D9/00C22C33/04F01L1/18B21J1/06B21J5/00B21J5/08
CPCC22C38/34C22C38/04C22C38/42C22C38/44C22C38/005C22C33/04C21D1/25C21D6/004C21D6/005C21D6/008C21D9/0068C23C8/26F01L1/18B21J1/06B21J5/08B21J5/002
Inventor 李士红毛兰英阙湘峰肖耀平
Owner 安福锦湖(湖南)气门有限公司