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Hot roller rolling method for stainless steel/aluminium composite plate

A technology of aluminum composite plate and stainless steel plate, which is applied in metal rolling, metal rolling, manufacturing tools, etc., can solve the problems of limited application range, large deformation of composite plate, high production cost, etc., and achieves reduced production cost and high deep drawing performance , the effect of convenient operation

Inactive Publication Date: 2005-03-02
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the disadvantages of the above-mentioned technologies are complex equipment, high technical difficulty, high production cost, and not suitable for the production of stainless steel / aluminum composite panels for general purposes, so the scope of application is greatly limited
The Chinese patent applied by the applicant in China, the application number is 00110630.9, and the title of the invention is "a method for manufacturing a bimetallic composite strip", which discloses a method of rolling two metal sheets to produce a composite sheet after being heated to different temperatures. , the effect is much better than that of complete cold rolling, but there are still defects that the process is complicated and the deformation of the clad plate is relatively large

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0011] Example 1: Implementation of stainless steel / aluminum / stainless steel three-layer composite. The aluminum plate with a thickness of 1.5mm and a width of 310mm is first treated with a NaOH alkali solution with a concentration of 15% and a temperature of 30°C, and the immersion time is 8 minutes to remove oil and Al on the surface of the aluminum plate. 2 o 3 Metal oxide film, after taking it out, rinse it with cold water, then warm water at 45°C, and then put the aluminum plate in 30% HNO at 60°C 3 Soak in the solution for 2 minutes, take it out and rinse it with clean water, put it in a drying oven and bake it for 3 minutes, the temperature of the oven is controlled at 240°C; select a stainless steel plate with a thickness of 0.5mm and a width of 300mm, and put it in a drying oven with a temperature of 80°C Metal cleaning agent (marketed, purchased in Zhangjiagang, product grade 606) was ultrasonically treated for 10 minutes, taken out, rinsed with cold water and warm ...

example 2

[0013] Example 2: The process system is the same as Example 1, the difference is that the two-layer composite of stainless steel and aluminum is implemented. The thickness of the aluminum plate is 2.4mm and the width is 320mm. The surface treatment conditions of the aluminum plate are NaOH lye concentration 20%, temperature 50°C, immersion time 4 minutes, concentration of 15% nitric acid solution temperature 70°C, immersion time 10 minutes, drying oven The temperature is 150°C, the drying time is 5 minutes; the stainless steel plate is 0.4mm, the width is 300mm, the metal cleaning agent temperature is 60°C, the time is 20 minutes, the drying furnace temperature is 150°C, and the time is 2 minutes; two kinds of metal plates The ends are misplaced by 12mm, and combined into a laminated board after spot welding. The combined laminated board has N 2 Heating in an air-shielded continuous heating furnace, the temperature is 450 ° C, the heating time is 15 minutes, and the roll surfa...

example 3

[0014] Example 3: The specific process system is the same as Example 2, the difference is that the surface treatment conditions of the aluminum plate are: the weight concentration of NaOH lye is 30%, the temperature is 70°C, the immersion time is 1 minute, the concentration is 20% nitric acid solution, the temperature is 80°C, soak The time is 5 minutes, the temperature of the drying furnace is 100°C, and the baking time is 10 minutes; the temperature of the metal cleaning agent during the stainless steel plate treatment is 70°C, the ultrasonic degreasing treatment is 15 minutes, and the oven temperature is 100°C, and the time is It is 10 minutes; two kinds of metal plate ends are misplaced 10mm to place, and the heating temperature of combined laminated plate is 420 ℃ in continuous heating furnace, and heating time is 20 minutes, and roll surface preheating temperature is 130 ℃, adopts graphite emulsifier (market sale ) to lubricate the roll surface; the heat treatment anneali...

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Abstract

The hot roller rolling process of composite stainless steel / aluminum plate includes the main steps of: physical and chemical surface treatment of stainless steel plate and aluminum plate including alkali solution treatment, cold water and hot water flushing, soaking with nitric acid solution, cold water flushing, ultrasonic defatting of stainless steel plate in metal washing agent and cold water flushing and stoving; laminating stoved stainless steel plate and aluminum plate and heating at 250-500 deg.c; composite rolling in rolling mill with roller preheated to 100-400 deg.c; and final diffusion annealing of the composite plate. The present invention has the main advantages of less deformation in total reduction degree of 10-35 %, obviously raised interface combining strength, high qualified product rate and very high deep drawing performance.

Description

technical field [0001] The invention relates to a metal material processing and forming technology, in particular to a hot rolling method for a stainless steel / aluminum composite plate. Background technique [0002] In the 1930s, the rolling composite technology has been applied. After the 1950s, the American Metal and Control Engineering Company adopted a three-step method of surface treatment (mechanical cleaning method), cold rolling composite, and diffusion annealing to produce a variety of metal composite panels. However, because the metal is easy to oxidize, although the surface has been cleaned, the new oxide film will still hinder the interface bonding. Therefore, the production of composite panels by the three-step method generally requires more than 60% of the total deformation to achieve interface bonding. For stainless steel and aluminum with a large difference in melting point, it is impossible to eliminate the work hardening caused by deformation through anneal...

Claims

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Application Information

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IPC IPC(8): B21B1/38B21B45/02B21B47/00
Inventor 于九明
Owner NORTHEASTERN UNIV
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