CHINACOAT 2025 Shanghai CHINACOAT 2025 will be held Nov. 25-27 at the Shanghai New International Expo Centre (SNIEC). CHINACOAT is a major global platform for coatings and ink industry manufacturers and suppliers, particularly from China and the Asia-Pacific region. CHINACOAT 2025 will return to the ... Read More

The Hardness Detection Method of Quenching Workpiece Many steel workpieces must be treated with quenching to obtain high hardness, high abrasion resistance, and take into account the appropriate plasticity and appropriate gold phase organization. The hardness of the quenching workpiece is usually ... Read More

Casting Defects of Metal Materials, part 7 The main defects of casting products are segregation, pores, shrinkage and shrinkage, inclusions, cracks, cold shut and other defects. Grain unevenness The phenomenon of large differences in grain size in different parts of the ingot is called grain ... Read More

The 18th Guangzhou (China) International Surface Finishing, Electroplating and Coating Exhibition The 18th Guangzhou (China) International Surface Finishing, Electroplating and Coating Exhibition (SF EXPO) will be held on June 17-19, 2025 at the Canton Fair Complex, Guangzhou, China. SF EXPO focuses ... Read More

Advantages of Metallographic Cutting Machine When cutting the samples with a qualified metallographic cutting machine, a smooth surface conducive to fine grinding can be formed. Usually the cutting speed is fast and the efficiency is high. Of course, the selection of grinding wheel, lubrication, ... Read More

Casting Defects of Metal Materials, part 6 The main defects of casting products are segregation, pores, shrinkage and shrinkage, inclusions, cracks, cold shut and other defects. Cold shut Wrinkles or layered defects on the surface of the ingot, or metal discontinuity inside are collectively referred ... Read More

Casting Defects of Metal Materials, part 5 The main defects of casting products are segregation, pores, shrinkage and shrinkage, inclusions, cracks, cold shut and other defects. Cracks The cracks generated during the solidification process of the metal are called hot cracks; the cracks generated ... Read More

Casting Defects of Metal Materials, part 4 The main defects of casting products are segregation, pores, shrinkage and shrinkage, inclusions, cracks, cold shut and other defects. Inclusions Metals or non-metallic materials with obvious interfaces and greatly different properties from the matrix are ... Read More

Casting Defects of Metal Materials, part 3 The main defects of casting products are segregation, pores, shrinkage and shrinkage, inclusions, cracks, cold shut and other defects. Shrinkage During the solidification process, the metal shrinks in volume, and the melt cannot be replenished in time, and ... Read More

Casting Defects of Metal Materials, part 2 The main defects of casting products are segregation, pores, shrinkage and shrinkage, inclusions, cracks, cold shut and other defects. Pores During the solidification process of metal, the solubility of gas decreases sharply. It is difficult for gas to ... Read More