Return Tungsten Processing Method

The sprayed surface need to remove after tungsten carbide body service and spray again. That could make the workpiece repaired. Ordinary  mechanical processing is difficult to remove tungsten carbide surface. Because hardness of tungsten carbide surface can reach about HV1400 which is too hard.

People usually adopt chemical method to remove tungsten. Such as hydrofluoric acid, nitric acid, hydrochloric acid. But these chemical substances is very harmful to the human body. High concentrations of hydrochloric acid can cause chronic poisoning, rhinitis, bronchitis, emphysema and other disease. Some will even get allergies, dermatitis, eczema and so on. Hydrochloric acid is very volatile and it can reaction with the water vapor in the air. Then forming hydrochloric acid fog and sodium hypochlorite. These are perishable goods and harm to human body, plants and animals. Certainly they have a damaging effect on the workpiece surface.

There is another method to remove tungsten without any harm to human body. While it is also non-toxic, environmental protection and in low cost. Firstly cleaning the tungsten carbide workpieces. Use cleaning fluid to clean the tungsten carbide workpieces and then use clear water to wash. Secondly Make the tungsten carbide workpiece clamped. So the tungsten carbide workpiece can rotatable fixed in the electrolysis groove. Thirdly prepare electrolyte and remove the coating. Finally washing the tungsten carbide workpiece with clear water.