Measuring method, sample and sample making method of bonding strength of metal composite materials
A metal composite material and bonding strength technology, which is applied in the detection of the bonding strength of the metal composite material interface and the detection field of the bonding strength of the aluminum-steel composite material interface. question
Active Publication Date: 2018-08-24
YINBANG CLAD MATERIAL
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Problems solved by technology
However, since the bonding strength of the epoxy resin adhesive with the highest strength at present and the bonding leader is difficult to exceed 40MPa, while the single-pass reduction of cold-rolled aluminum-steel composite materials exceeds 50%, and the bonding strength of the interface is greater than 50MPa, The bonding strength after annealing exceeds 60MPa, and since the application range of this method is limited by the tensile strength of the adhesive (glue) used, the interfacial bonding strength of aluminum-steel composites cannot be evaluated by conventional bonding tension
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[0081] The bonded tensile sample used in the present invention is an aluminum-steel composite material, wherein the steel is 08Al steel, the aluminum is 4A60 aluminum alloy, and the total thickness is 1.5mm, wherein the thickness of the aluminum layer is 0.08-0.1mm, and the thickness of the steel layer is 1.49mm. The thickness of the aluminum layer 2 is much smaller than that of the steel layer 1.
[0082] The specific steps of making and testing the sample for measurement are as follows:
[0083] (1) A disc sample with a diameter of D is processed on the aluminum-steel composite material layer by wire cutting, and an aluminum alloy plate 4 having the same diameter as the disc sample is produced.
[0084] (2) The surface to be pasted is sanded.
[0085] First clean the surface of the upper wafer sample and the aluminum alloy plate 4 to be pasted with hydrochloric acid, then wipe the respective surfaces of the wafer sample and the aluminum alloy plate 4 to be pasted successive...
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Abstract
The invention provides a method for measuring the bonding strength of a metal composite material, a sample and a sample manufacture method. The method for measuring the bonding strength of the metal composite material comprises the following steps: A. cut a to-be-processed sample in a certain shape on the composite material comprising a base layer and a cladding layer; B. manufacturing a clad alloy material in a shape same as and / or different from the shape of the to-be-processed sample; C. bonding the side of the cladding layer of the to-be-processed sample with the surface to be bonded of the clad alloy material; D. processing a hole in a certain shape on the side of the base layer of the to-be-processed sample until reaching the combination surface of the base layer and the cladding layer and processing a step in a certain shape on the side of the clad alloy material, wherein the depth of the step goes beyond the combination surface of the base layer and the cladding layer; E. putting the sample in a test device for static pressure testing; and F, acquiring the maximum tensile stress F during fracture of the interface of the sample, and obtaining the bonding strength of the sample according to the equation Sigma(b)=F / S. According to the measuring sample and the measuring method, the bonding strength of the metal composite material can be effectively measured.
Description
technical field [0001] The invention mainly relates to the technical field of detecting the interfacial bonding strength of metal composite materials, in particular to the technical field of detecting the interfacial bonding strength of aluminum-steel composite materials. Background technique [0002] Thin aluminum-layer aluminum-steel composite strip has many advantages such as the excellent corrosion resistance and thermal conductivity of aluminum alloy and the good mechanical properties of steel. The air-cooling system of the power station made of aluminum-steel composite strip replaces the water-cooling system, which can save more than 75% of water. Based on the comprehensive consideration of the surface quality, dimensional accuracy, performance stability and production efficiency of aluminum-steel composite strips, most of the industry currently uses the cold-rolled composite method to produce aluminum-steel composite materials, and the thickness of the finished produc...
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IPC IPC(8): G01N19/04G01N1/28
CPCG01N1/28G01N19/04
Inventor 李龙陈鑫周德敬
Owner YINBANG CLAD MATERIAL