The main characteristics that reflect the quality of direct plating are the conductivity of hole wall and the deposition rate of electroplated copper layer. The strength of the conductive ability is r...

Previously, the dirtiest way we could distinguish stainless steel screws from iron screws was with a magnet. Suck this screw, if it can suck, it means it is an iron screw, because it is magnetic. What...

Grade 10.9 /12.9 /14.99 high strength alloy steel fasteners are made of chrome-manganese or chrome-molybdenum alloy steel, and the hardness is generally between 42-52HRc. Because the electroplating (s...

Zinc is soluble in acids and alkali, so it is called an amphoteric metal. Zinc changes little in dry air. In humid air, an alkaline zinc carbonate film is formed on the surface of zinc. In the atmosph...

1, the benchmark first: that is, the first processing datum, parts in the machining process, as the positioning basis of the surface should be first processed out, in order to provide a fine benchmark...

In the parts processing industry, the most taboo problem is the deformation of parts, once it appears, the consequences will be unimaginable, affecting the economic benefits of enterprises, and causin...