热门关键词：济南彩钢板 | 济南复合板 | 济南彩钢瓦 | 济南c型钢 | 济南钢结构 |
Composite steel plates can effectively combine the advantages and characteristics of the substrate and composite materials, effectively overcome the shortcomings of the substrate itself without changing its properties, leverage its advantages, and enhance the overall wear resistance, impact resistance, and corrosion resistance of the composite steel plate. At the same time, Jinan Composite Plate Factory believes that it has good extensibility, formability, and other characteristics. Regardless of the type of test, when conducting quality testing on composite steel plates, attention should be paid to situations where the test results are invalid, such as:
During the testing of shear strength, non joint surface fracture may occur due to improper mechanical processing of the specimen or improper use of the testing device, and the test results may be affected by incorrect selection of the bending center or equipment failure during bending testing. When such situations occur, the same number of samples should be retested, or other plans and measures should be taken based on the actual situation to ensure the effectiveness and scientificity of the detection.
The adhesion test is also an important test for composite steel plates, and can be used as an alternative test for shear testing to detect the related properties of composite steel plates. Due to the need to visually inspect whether the joint surfaces on both sides of the sample are separated after removing the test force in this experiment, the technical experience of the testing personnel is more important. If there is a misjudgment in this regard, it will directly affect the calculation results of the final separation rate.
In addition, it should be noted that if it is necessary to reduce the thickness of the steel plate during sample preparation, it is necessary to ensure that the thickness of the composite material is not less than 3mm. If the thickness of the composite material is less than or equal to 3mm, only the thickness of the substrate should be reduced.
During the impact test, the sample should be cut near the surface of the substrate. If necessary, samples can be taken from the substrate near the bonding surface. For the testing of Vickers hardness index, due to the difference between the clad steel plate and the base material, and the transition layer may be generated, the surface of the polished sample must be corroded with corresponding corrosion solution to show the boundary between the clad steel plate and the base material. If the clad steel plate to be tested has a transition layer and a Heat-affected zone, the boundary of each area should also be shown.
When conducting ultrasonic testing on composite steel plates as needed, it should be determined whether to test from one side of the composite plate or from the basic side based on the acoustic impedance, surface state, and shape of the composite steel plate. However, if the thickness of the composite plate cannot meet the relevant requirements, it must be tested from one side of the composite plate. After completing the inspection, the level can be evaluated based on the inspection results. For composite steel plates that fail the evaluation, the supplier can take relevant measures to handle or repair them. After repair, the inspection can be conducted again to conduct the level evaluation again.
The quality inspection of composite steel plates also involves many other indicators, and each inspection item has different meanings. In different application fields, the specific technical requirements for its performance and quality are also inconsistent, and the inspection should also be carried out based on the actual situation. For more related content, come to our website http://www.jnjgcg.com For your consultation and understanding!