Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for processing bending die with long service life

A processing method and long-life technology, applied in the direction of manufacturing tools, furnace types, furnaces, etc., can solve problems such as difficulty in balancing strength and wear resistance, and difficulties in heat treatment parameters

Inactive Publication Date: 2013-07-03
ZHENJIANG HENGYUAN AUTOMOBILE COMPONENTS
View PDF2 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional bending dies are usually made of Cr12MoV forgings, which are machined to the required size before heat treatment. The heat treatment process usually adopts quenching and tempering treatment, but the selection of heat treatment parameters is difficult, and it is difficult to balance strength and wear resistance. requirements, its use is usually only up to 20,000 times

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0010] The embodiment of the method of the present invention is as follows: take H13 forging as material, carry out mechanical rough machining first, carry out heat treatment for the first time after rough machining; Heat treatment for the first time is quenching and tempering treatment after quenching; The step of heat treatment for the first time is: quenching for the first time When the temperature reaches 1500°C, put it into the oil at room temperature for rapid cooling; after the second furnace heating to 800°C, it will slowly cool down to room temperature with the furnace temperature, and keep the hardness at HRC35-38; after the first heat treatment, mechanically finish the workpiece to the final size, and then carry out nitriding treatment to obtain the finished product. The nitriding hardness after nitriding treatment is HV1000-1100, and the depth of the nitrided layer is 0.4-0.5mm.

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
depthaaaaaaaaaa
hardnessaaaaaaaaaa
Login to View More

Abstract

The invention relates to manufacture of automobile part processing dies, in particular to a method for processing a bending die with a long service life. The method comprises the steps as follows: a, an H13 forge piece is taken as a material, mechanical roughening is performed firstly, and then first hot processing is performed, wherein the first hot processing is thermal refining after quenching; and b, after the first hot processing, a workpiece is subjected to machine finishing till the workpiece with a final size is formed, and then nitriding is performed to obtain a finished product is obtained. According to the method, by improving the bending die material and a hot processing method, the purposes that the surface of the bending die is hard in texture and wear resistant, and higher toughness is kept in the interior can be realized. The service life of the bending die is prolonged greatly compared with twenty thousand use times of a bending die previously, while at present, a single set of bending dies can be used for ten thousand times.

Description

technical field [0001] The invention relates to the manufacture of molds for processing automobile parts, in particular to a processing method for long-life bending dies. Background technique [0002] The bending die is a mold used to manufacture special-shaped pipe fittings in auto parts. Its surface has a forming groove suitable for the bending shape of the pipe fittings. During the forming process of special-shaped pipe fittings, the mold will force the workpiece to deform and produce local friction. It has good strength and wear resistance. Traditional bending dies are usually made of Cr12MoV forgings, which are machined to the required size before heat treatment. The heat treatment process usually adopts quenching and tempering treatment, but the selection of heat treatment parameters is difficult, and it is difficult to balance strength and wear resistance. Requirements, its use is usually only up to 20,000 times. Contents of the invention [0003] The technical pr...

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): C23F17/00C21D9/00C21D1/18C21D1/25
Inventor 经怀忠
Owner ZHENJIANG HENGYUAN AUTOMOBILE COMPONENTS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap 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