Apply all various flux, the cause of exceeding poleranerance that measure the sulphur content of ferrous metal, finally puts forward some effective solvents;

The design of die for ferrous metal semisolid die mould;

This paper introduces the new lubricant of high polymer used for ferrous metal cold extrusion.

The high corrosion resistance of a black metal and a new proless of no poisonous black coating are studied.

In addition, the research and application of low pressure casting technology in copper alloys and ferrous metals are described emphatically.

A novel process of ambient temperature parkerizing and blackening for ferrous metals was studied, as also the effect of factors on the finishing quality.

Ferrous metals, as many other materials, are not normally considered turnable with diamond because the diamond wear rate is too high and surface roughness too low on ferrous metals to make the process attractive.

Instead of resource pinch, the difficulty in prospecting metal ore deposits due to the lagging knowing has been the main reason for the short supply of metal resources in China.

This paper expounds a wide gap between the inadequate supply of nonferrou s metal resources and rapid development of national economy in t he course of domestic industrializa tion.

The challenge from the shortage of metal resources in China,the characteristics of the metal resources and the significance of recycling of metals from waste printed circuit boards were discussed.