Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Heat treatment process of rocker

A process, nitriding treatment technology, applied in the direction of metal material coating process, coating, solid diffusion coating, etc., can solve the problems of high brittleness and poor wear resistance of rocker arm, and achieve the effect of reducing requirements

Inactive Publication Date: 2011-03-30
徐鹤铭
View PDF0 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After quenching, the brittleness of this part is extremely high, and fractures often occur here during use. For example, the carburized layer does not meet the requirements, and the wear resistance of the rocker arm is poor, resulting in early failure. Once the above defects appear, only the entire furnace is scrapped.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Heat treatment process of rocker
  • Heat treatment process of rocker
  • Heat treatment process of rocker

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] In the present invention, after tempering the workpiece at a high temperature of 600°C, heat it for 30 minutes, put it in the sandblasting machine for 5-10 minutes, make the surface hardness of the workpiece HRC27±3, put it in the preheating furnace to preheat to 300±10°C after cleaning, and keep it warm 8 minutes, and then placed in a nitride salt bath at a temperature of 560±5°C for 120±10 minutes, so that the surface hardness of the workpiece is HV450-500, and the total nitride layer depth is 0.25-0.35, and it can be completed.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
hardnessaaaaaaaaaa
hardnessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a heat treatment process of a rocker, belonging to the workpiece heat treatment processes for general machinery. The heat treatment process for the rocker workpiece can guarantee stable quality and prevent workpiece from brittle fracture, and has reduced requirement on carburization equipment and the product pass rate reaching 100%. The heat treatment process comprises the processes of impact molding, carburization, quenching, high-temperature tempering, preheating and malcomising for the rockers.

Description

technical field [0001] The invention belongs to a rocker arm heat treatment process for general machinery, in particular to a rocker arm heat treatment process for a general gasoline engine with a cylinder diameter within Φ100 mm. Background technique [0002] In view of the common problems in the current heat treatment process, the heat treatment of metal parts with complex shapes, many stress concentration points, and frequent use cannot meet the requirements of use, and problems such as deformation stress often occur. For example, the heat treatment process used by the rocker arm includes stamping the raw material of 08 steel plate, carburizing, quenching, low temperature tempering, and polishing. This heat treatment process has high technical requirements on the carburizing furnace, and it is necessary to use a controllable atmosphere heat treatment carburizing furnace or a carburizing furnace with a microcomputer to control the carbon potential in the furnace; Extremel...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C23F17/00C23C8/22C21D1/18C23C8/50
Inventor 徐鹤铭
Owner 徐鹤铭
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com