Leakproof welding method of stainless steel pipe and copper fin

A welding method, stainless steel pipe technology, applied in welding equipment, welding/welding/cutting articles, tubular articles, etc., can solve the problems of lack of independence and universality, complicated process, etc.

Inactive Publication Date: 2010-06-16
BEIJING INST OF SPACECRAFT ENVIRONMENT ENG
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The stainless steel plate and the copper plate can be welded together, and then the stainless steel plate

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
  • Leakproof welding method of stainless steel pipe and copper fin
  • Leakproof welding method of stainless steel pipe and copper fin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] The welding of copper fins and stainless steel tubes belongs to the welding of dissimilar metals, which is one of the key processes in the manufacture of heat sinks. The schematic diagram of the welding sequence of copper fins and stainless steel tubes is as follows figure 1 shown. The barrel fins are numbered according to the welding sequence, and the copper fins are welded to the stainless steel pipe 7 according to the sequence of the copper fins 1-6. To this end, a series of welding process tests are required. The welding process currently used is the welding process of melting the base material (copper fin). When welding, fold the welded copper fins to a 90° 5mm edge, and use special welding fixtures to fix the copper fins and stainless steel pipes. During the welding process, the welding sequence adopted is: spot welding fixation-segmented intermittent welding-full welding, so as to minimize welding deformation and correct the shape after welding.

[0022] In ord...

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 relates to a welding method of a heterogenous metal between a stainless steel pipe and a copper fin, which comprises the following steps of: carrying out necessary tests and leak detection for parts to be welded; finishing the welding of the parts by applying a special argon arc welding process; and inspecting according to a corresponding inspection condition to ensure that a product satisfies the use requirement of a space environment simulation test. The method is particularly beneficial to the splice welding of the stainless steel pipe and the red copper fin in a heat sink, and an obtained weld can still keep vacuum tightness under the condition of long-term cool-heat exchange at high and low temperatures.

Description

technical field [0001] The invention relates to a heterogeneous metal welding method between copper fins and stainless steel pipes, belonging to the field of welding technology in mechanical manufacturing. The method involves the welding of the stainless steel tube and the copper plate in the heat sink, which is a key part of the space environment simulation test equipment. Background technique [0002] With the development of combined applications between dissimilar metals, dissimilar metal welding has been widely used. In the development process of space environment simulation test equipment, the welding of copper fins and stainless steel tubes is one of the key processes in the manufacture of heat sinks. In the welding of dissimilar metals, especially when welding copper fins to stainless steel pipes, the commonly used welding techniques have the following disadvantages: [0003] (1) Oxygen-acetylene welding. Strict cleaning is required after welding, the materials use...

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): B23K9/173B23K9/095B23K103/22B23K101/08
Inventor 魏仁海张立伟佟永利张文杰王克文卜京怀李罡
Owner BEIJING INST OF SPACECRAFT ENVIRONMENT ENG
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
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap