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

Manufacturing process of track pin bushing

A manufacturing process and technology of track pins, applied in the field of track pin bushing manufacturing process, can solve the problems of long carburizing time, high production cost, poor performance, etc., shorten carburizing time, enhance impact resistance and save time Effect

Inactive Publication Date: 2019-04-12
孙永宁
View PDF9 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art and provide a manufacturing process for track pin bushings; it mainly solves the problem of long carburizing time, high energy consumption, high production cost and poor performance of existing low carbon steel pin bushings. The problem

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 1

[0018] Embodiment 1, the blank adopts the carbon steel 40Cr whose composition complies with GB3077-2015, the carbon content is between 0.35-0.45%, and the hot-rolled seamless steel pipe or forged blank is used for blanking, and then the outer circle, inner hole and length are processed to the corresponding The size of the carburizing furnace is put into the carburizing furnace, evacuated for 1 hour, and the temperature is raised to 920-940 ° C. The carbon potential in the furnace is 1-1.1%. After 7 hours of strong infiltration, the carbon potential is controlled. The diffusion period is 6 hours. 0.8-0.85%, to reach the carburization depth of 1.8-2mm, cooling, cooling in the furnace to 820°C for quenching, quenching and tempering at 180°C±10°C for 4 hours, then air cooling to room temperature; use 15-200KHZ high-frequency heating machine, Heating the inner hole, spraying water and quenching at the same time, the surface is above HRC62, the depth is 3.2-4.5mm, and tempered at 180...

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

No PUM Login to View More

Abstract

The invention discloses a manufacturing process of a track pin bushing. The manufacturing process is characterized by comprising the process steps of blank making, machining, carburizing, quenching, inner hole quenching, finishing and the like; the depth of an effective hardening layer is obviously increased, control over the depth of the effective hardening layer is ensured during super-audio inner hole quenching, the carburizing time is greatly shortened, the energy consumption is greatly reduced, the time is saved, the production cycle is shortened, a high-hardness wear layer of an inner hole is obtained, the service life is greatly prolonged, meanwhile, an anti-impact toughness zone of a core part is obtained, and the impact resistance is enhanced.

Description

Technical field: [0001] The invention relates to the technical field of crawler construction machinery, in particular to a manufacturing process of a crawler pin sleeve. Background technique: [0002] With the development of crawler construction machinery, the current production process of pin sleeves takes too long for heat treatment and high energy consumption, resulting in high production costs. The production method generally uses low carbon steel 20CrMnTi (GB3077-2015) or 20CrMo steel After machining, carburizing + quenching + low temperature tempering, the pin sleeve with hard surface and tough core is obtained. After 36-42 hours of carburizing, quenching and tempering can meet the technical requirements of JB / T 5932.4-91, carburizing The effective hardened layer depth is 2.7-3.4mm. Invention content: [0003] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art and provide a manufacturing process for track pin bushin...

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
IPC IPC(8): B23P15/00
CPCB23P15/00
Inventor 孙永宁张金
Owner 孙永宁
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