Advantages of square tube hardness testing
What are the advantages of square tube hardness testing: the workpiece with a metal material manufacturing quality inspection before and after heat treatment, is usually achieved by hardness testing, hardness refers to the metal resist other more hard object pressed into its surface capacity, and therefore hardness is a very important mechanical properties. He somehow reflect the mechanical properties of the workpiece, and other performance tests (such as tensile, impact, torsion test, etc.), compared with a simple, practical and convenient features, specific induction has the following advantages:
1) The hardness of the workpiece and other mechanical properties (hardness, ductility, toughness, etc.) there is a certain relationship. The higher the hardness of the material, the greater the strength, ductility and toughness smaller. The hardness and strength of metal there is a certain relationship, when the hardness of greater than carbon structural steel 175HB;
2) Hardness testing, it will not damage the parts, leaving only local indentations, no effect on the use, without the workpiece is processed into a special shape;
3) The hardness measurement other than simple mechanical properties, just to the part surface roughness can be polished or meet the requirements;
4) Very thin metal layer, a very small volume of metal, complex shape of the workpiece and so can measure the hardness value.