Method for measuring combination strength of aluminum film of film aluminum steel composite board and steel substrate

A combination strength and composite plate technology, which is applied in the direction of measuring devices, test sample preparation, instruments, etc., can solve the problems of difficult direct and accurate measurement of the bonding strength of thin-film aluminum-steel composite plate aluminum film and steel matrix, and achieve brazing The effect of low temperature and simple operation

Active Publication Date: 2012-06-13
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the difficulty of directly and accurately measuring the bonding strength of the aluminum film and the steel matrix of the thin-film aluminu

Method used

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  • Method for measuring combination strength of aluminum film of film aluminum steel composite board and steel substrate
  • Method for measuring combination strength of aluminum film of film aluminum steel composite board and steel substrate
  • Method for measuring combination strength of aluminum film of film aluminum steel composite board and steel substrate

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specific Embodiment approach 1

[0019] Specific embodiment one: a method for measuring the bonding strength of the thin-film aluminum-steel composite plate aluminum film and the steel matrix in this embodiment is carried out in accordance with the following steps: 1. Grinding the surface to be welded of the thin-film aluminum-steel composite plate and the aluminum alloy , polishing, and then clean the thin-film aluminum-steel composite board, the surface to be welded of aluminum alloy and the zinc-aluminum solder for use; 2. The thin-film aluminum-steel composite board and aluminum alloy obtained in step 1 are bonded on one side by zinc-aluminum solder Connect and prepare for welding; 3. Welding: heat the thin-film aluminum-steel composite plate, zinc-aluminum brazing material, and aluminum alloy overlapped in step 2 to 50 ° C ~ 550 ° C, and then place the ultrasonic head on the surface of the aluminum alloy for ultrasonic After processing for 0.5-20s, after the ultrasonic application is completed, the ultras...

specific Embodiment approach 2

[0028] Embodiment 2: This embodiment differs from Embodiment 1 in that the zinc-aluminum solder in step 1 has a thickness of 0.1-10 mm. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0029] Specific embodiment 3: This embodiment differs from specific embodiments 1 to 2 in that the single-sided lap joint described in step 2 has a length of 2 mm to 10 mm. Others are the same as the specific embodiment 1 to 2.

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Abstract

A method for measuring combination strength of an aluminum film of a film aluminum steel composite board and a steel substrate aims at solving the problem that the combination strength of the aluminum film of the film aluminum steel composite board and the steel substrate cannot be measured directly and accurately in the prior art. The method includes: using zinc-aluminum brazing filler metal forwelding an aluminum alloy and the aluminum film of the film aluminum steel composite board under anti-vacuum conditions and with the effect of an added heat source and ultrasound, and then performinga stretching and shearing test through an electronic universal testing machine. The method can directly measure the combination strength of the aluminum film of the film aluminum steel composite board and the steel substrate, requires no formula conversion, is easy to operate, needs no expensive experiment and can be applied to the field of mechanical property testing.

Description

technical field [0001] The invention relates to a method for measuring the bonding strength of an aluminum film of a thin-film aluminum-steel composite plate and a steel matrix. Background technique [0002] The preparation of thin-film aluminum-steel composite panels requires sufficient interfacial bonding strength between the aluminum film and the steel matrix. The numerical value of the bonding strength between the aluminum film and the steel substrate is the most important indicator for evaluating the bonding quality of the film substrate, and it is the prerequisite to ensure that the thin-film aluminum-steel composite panel meets the subsequent processing and use including welding. Accurate evaluation and characterization of the interface bonding strength between the aluminum film and the steel substrate is the most critical part of establishing a quality evaluation system for thin-film aluminum-steel composite panels. Measuring the bonding strength between the aluminum...

Claims

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Application Information

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IPC IPC(8): G01N19/04G01N1/28
Inventor 王谦冷雪松闫久春周俊玲杨天豪
Owner HARBIN INST OF TECH
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