How to detect the hardness of high-pressure boiler tubes

High-pressure boiler tubes is to determine the hardness of the main elements of its quality, if we want to accurately detect the high-pressure boiler tubes hardness, then the first point must first understand 20G high-pressure boiler pipe mechanical properties, as this is affecting their deformation , stamping, cutting and other processing performance and quality problems. So first of its hardness testing should detect its mechanical properties. Typically using a tensile test and hardness test these two methods do testing. Tensile test refers to high-pressure boiler tube sample preparation, but also in a tensile testing machine until fracture tensile Admiral, so you can detect the high-pressure boiler tubes tensile strength, yield strength, elongation rate and section shrinkage. In metal material tensile test is the most commonly used detection method is not easy for many hardness test, the tensile test must be carried out. Relatively high hardness test method, there scarification, pressed into the method, dynamic method, etc., as compared with the tensile test, hardness test is relatively simple and more.