Vickers hardness measurement The unit of hardness measured is micro Vickers hardness. When hv-30 Vickers hardness tester is used, the diamond indenter will slowly drop to the surface to be measured, and the set force will be applied. The holding time of the force is 10s. After the force...
(1) Aiming at the common shrinkage and porosity defects in semi-solid die-casting thick wall products, the microstructure analysis and mechanical properties test were used to characterize the defects. The influencing factors of the defects were determined by design experiments. Finally, the influence rules of different production process parameters on...
1 metallographic structure analysis The optical microscope (OM) used in this experiment is axiovert 200, and the magnification is 25, 50, 100, 200 and 500. The golden photograph collected by the digital acquisition system of the equipment is generally 2048x The resolution of 1536 pixels is 96 DPI. In...
1.Application in automobile and motorcycle casting As one of the main directions of piston blank production, squeeze casting has produced various kinds of piston with a diameter of 90-190mm in China. The first automobile factory has been engaged in piston production with squeeze casting for many years, which is...
Sand mold casting is a good method used in foundry industry involving pouring a molten metal into a sand mold. Sand mold casting use sand casting mold. There are many types of sand mold used for sand casting. Different patterns of sand mold can make different type product in sand mold casting...