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

A connection method between a stainless steel sleeve and a brass ring

A stainless steel sleeve and connection method technology, applied in welding equipment, welding equipment, auxiliary welding equipment and other directions, can solve the problem of parts scrap and other problems

Active Publication Date: 2021-01-22
CHINA HANGFA GUIZHOU LIYANG AVIATION POWER CO LTD
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, due to the limitations of the existing casting process and equipment, there are inevitably pores in the composite copper layer of the part. When the number of holes and holes exceeds the standard, the part is evaluated as waste

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
  • A connection method between a stainless steel sleeve and a brass ring

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] The technical scheme of the present invention will be further described below in conjunction with the accompanying drawings, but the required protection scope is not limited to the description;

[0030] A connection method between a stainless steel sleeve and a brass ring, the rolled brass ring 1 is processed to the required size, the stainless steel sleeve 2 made of forging is processed to the specified size, and the brass ring 1 and the stainless steel sleeve are bonded with fine sandpaper 2, the surface of the paste is polished, then cleaned with acetone and blown dry. Before assembling the brass ring 1 and the stainless steel sleeve 2, select the interference amount to be 0.05-0.08 (here refers to the assembly gap between the brass ring 1 and the stainless steel sleeve 2), press the brass ring 1 into the stainless steel sleeve 2 with a press, Form an assembly. Apply anti-adhesion paint on the surface of the pressure head 3 and the clamp 4 in contact with the assemb...

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 method for connecting a stainless steel sleeve and a brass ring. The brass ring (1) and the stainless steel sleeve (2) are processed to be the predetermined size; the brass ring (1) is pressed into the stainless steel sleeve (2) through a press machine to form an assembly unit; the assembled assembly unit is placed on a clamp, a pressing head (3) is pressed into an innerhole of the brass ring (1) and then placed in a vacuum furnace, the vacuum degree of the vacuum furnace is 0.5*10<-2>-10*10<-1>Pa, heating is carried out until the temperature is 600-900 DEG C, heat preservation is carried out for 50-70 minutes, then cooling is carried out to 500-700 DEG C, the condition is maintained for 200-600 minutes, and then furnace cooling is carried out to be below 250 DEGC. The method eliminates the hole defects existing in an existing casting process, realizes metallurgical combination of two materials, and improves the qualification rate of products.

Description

technical field [0001] The invention belongs to the technical field of manufacturing engine structural parts, and relates to a technology for compositely connecting martensitic stainless steel and brass. Background technique [0002] An engine part, which uses brass as a wear-resistant layer to line the steel sleeve. The existing technology is to cast copper on the surface of the steel, and bond it together after solidification to realize the composite of steel and copper. The grade of stainless steel is: 1Cr11Ni2W2MoVA, and the grade of brass is: H62. [0003] However, due to the limitations of the existing casting process and equipment, there are inevitably pores in the composite copper layer of the part. When the number of holes and holes exceeds the standard, the part is evaluated as a waste product. [0004] In order to eliminate the holes produced by casting, the present invention seeks to use a new process to make the composite copper layer have no holes. Contents ...

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 Patents(China)
IPC IPC(8): B23K20/02B23K20/14B23K20/227B23K37/053
CPCB23K20/023B23K20/14B23K20/227B23K37/053
Inventor 谢黎雄王建荣白文彬李湘胜
Owner CHINA HANGFA GUIZHOU LIYANG AVIATION POWER CO LTD
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