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

Method for manufacturing steel-copper composite welded tube

The technology of a composite welded pipe and a manufacturing method is applied in the manufacturing field of metal composite pipes, which can solve the problems affecting the application and promotion of steel-copper composite pipes, steel-copper peeling, delamination, wrinkles, and short pipe lengths, etc. The effect of good quality and low cost

Inactive Publication Date: 2011-06-29
江苏其元集团有限公司
View PDF6 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These existing methods have low yield, short pipe length and low efficiency
More importantly, the steel-copper composite pipes made by these existing methods can only achieve the mechanical combination of the steel-copper joint surface, and such a joint surface will produce a gap between the steel and copper during the processing and use of the subsequent pass. Phenomena such as peeling, delamination, and wrinkles have seriously affected the application and promotion of steel-copper composite pipes.

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

[0032] A method for manufacturing a steel-copper composite welded pipe, comprising the steps of:

[0033] (1), manufacturing steel-copper composite strip: (a), using ultra-low carbon hot-rolled steel strip with a thickness of 4.5mm as raw material, its carbon content is 0.002, the steel strip is subjected to surface pickling and cleaning treatment, and the surface of the steel strip is removed After the rust and dirt are removed, cold rolling is carried out to a thickness of 3.5mm, and then the first annealing is carried out. The annealing temperature is 880°C, and the annealing time is 6 hours. Hair treatment;

[0034] (b), the copper strip that thickness is 0.3mm is carried out surface cleaning treatment, after removing the dirt and attachment on the copper strip surface, use steel wire brush to roughen the composite surface of copper strip;

[0035] (c), while heating the steel strip after roughening in step (a) to 750°C, and heating the copper strip after roughening in st...

Embodiment 2

[0052] A method for manufacturing a steel-copper composite welded pipe, comprising the steps of:

[0053] (1), manufacturing steel-copper composite strip: (a), using ultra-low carbon hot-rolled steel strip with a thickness of 4.5mm as raw material, its carbon content is 0.003, the steel strip is carried out surface pickling and cleaning treatment, and the steel strip surface is removed After the rust and dirt are removed, cold rolling is carried out to a thickness of 3.4mm, and then the first annealing is performed. The annealing temperature is 875°C and the annealing time is 7 hours. After the first annealing is completed, use a wire brush to clean the composite surface of the steel strip Hair treatment;

[0054] (b), the copper strip that thickness is 0.29mm is carried out surface cleaning treatment, after removing the dirt and attachment on the copper strip surface, use steel wire brush to carry out roughening treatment to the composite surface of copper strip;

[0055] (c...

Embodiment 3

[0072] A method for manufacturing a steel-copper composite welded pipe, comprising the steps of:

[0073] (1), manufacturing steel-copper composite strip: (a), using ultra-low carbon hot-rolled steel strip with a thickness of 4.5mm as raw material, its carbon content is 0.003, the steel strip is carried out surface pickling and cleaning treatment, and the steel strip surface is removed After the rust and dirt are removed, cold rolling is carried out to a thickness of 3.51mm, and then the first annealing is performed. The annealing temperature is 885°C and the annealing time is 8 hours. After the first annealing is completed, use a wire brush to clean the composite surface of the steel strip Hair treatment;

[0074] (b), the copper strip with a thickness of 0.4mm is carried out surface cleaning treatment, after removing the dirt and attachments on the surface of the copper strip, use a steel wire brush to roughen the composite surface of the copper strip;

[0075] (c), while h...

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
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention relates to a method for manufacturing a steel-copper composite welded tube, comprising the following steps: respectively washing the surfaces of a steel band and a copper band which are utilized as raw materials; matting the composite surfaces of the steel band and the copper band; heating the steel band to 750+ / -30 DEG C; heating the copper band to 550+ / -30 DEG C; then attaching the composite surface of the steel band to the composite surface of the copper band; and sending the steel band and the copper band to a cold mill, rolling and compounding; annealing, rolling, annealing, flattening and separating the steel and copper composite band in sequence to obtain a steel-copper composite band with a needed width; delivering the steel-copper composite band to a tube molder to mould the tube; then welding, replenishing copper, sizing, detecting flaw, decoiling, detecting leakage, annealing, pulling, annealing and decoiling in sequence; and then packing the product in storehouse. The method is suitable for tubes for the condensers and evaporators of domestic electric appliances such as air conditioner and refrigerator.

Description

technical field [0001] The invention relates to a method for manufacturing a metal composite pipe, in particular to a method for manufacturing a steel-copper composite welded pipe. Background technique [0002] Copper tubes are widely used in air conditioner condensers and evaporators, refrigerator condensers and evaporators, connecting pipes for internal and external air conditioners, and large industrial Condenser, radiator. There are two manufacturing methods for copper tubes: cold drawing process and coiled tube welding process. The cold drawing process uses hot-rolled seamless copper tubes as materials, and obtains copper tubes with the required diameter after multiple drawing processes. The coiled tube welding process uses copper strip as the starting material, and the tube is formed in the tube forming unit to form a copper tube tube, and then the copper tube is made after solid-state high-frequency welding. [0003] However, due to the shortage of resources and hi...

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): B21C37/08
Inventor 卢其元
Owner 江苏其元集团有限公司
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