The brushed aluminum sheet cut to size is a processing technology of aluminum plate. Aluminum plate is an unprocessed material, while brushed aluminum plate is specially treated. The process of drawing aluminum plates is also based on aluminum plates, but not all aluminum plates are suitable for drawing. The difference between brushed aluminum plates and aluminum plates lies in surface friction treatment, hardness, strength, ductility, etc.
The chemical composition of brushed aluminum sheets is one of the key factors affecting their quality. Therefore, when conducting material inspection, it is first necessary to inspect its chemical composition. Commonly used inspection methods are spark emission spectrometry, electron probe analysis, etc.
These methods can quickly detect the main chemical components of the brushed aluminum plate, such as aluminum, silicon, copper, manganese, magnesium, iron and other element contents. Through inspection, it can be judged whether the composition of the aluminum plate meets the standard requirements to ensure that the product is qualified.
Tensile strength refers to the maximum tensile force that a material can withstand during the stretching process. It is one of the important indicators for judging the quality of brushed aluminum plates.
Tensile strength testing is usually carried out using a tensile testing machine. By measuring the breaking tensile force, cross-sectional area and other parameters of the material, tensile strength, yield strength and other parameters are calculated. According to different international standards and industry standards, the tensile strength requirements for brushed aluminum plates will also be different.
The elongation rate of the brushed aluminum plate refers to the proportion of linear deformation of the material during the stretching process. This parameter is an important indicator for evaluating the plastic deformation ability of materials. The elongation rate test is usually carried out using a elongation testing machine.
By measuring the initial length and the length after fracture of the tensile sample, the elongation rate of the brushed aluminum plate is calculated. The elongation rate will directly affect the processing performance and strength of the aluminum plate, so the elongation rate of the brushed aluminum sheet is also required to be different.
Hardness is an important physical property of materials, which usually refers to the resistance of solid materials to external forces. Hardness testing can be used to evaluate parameters such as the surface hardness of the brushed aluminum plate and the internal grain boundary hardness of the material.
Currently, commonly used hardness test methods include Barcol hardness test and Brinell hardness test. According to different production standards, the requirements for hardness are also different.
Corrosion resistance is an important performance indicator of brushed aluminum plates, which directly affects its performance in various fields. Salt spray testing and other methods are usually used to test the corrosion resistance of aluminum plates.
The salt spray test is to expose the brushed aluminum plate sample to a certain concentration of salt spray environment to simulate the corrosion effect in the real environment. We can evaluate the corrosion resistance of the sample by observing the rust spots, deterioration, etc. on the surface of the sample.
The brushed aluminum sheets usually require coating to improve their corrosion resistance, aesthetics, and decorative properties.
Key indicators for testing coating quality include coating adhesion, scratch resistance, abrasion resistance and chemical corrosion resistance. Scratch test, hardness test, chemical corrosion resistance test and other methods can usually be used to evaluate coating quality.
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