Punu00c7u00d5es and matrices su00e0lidas wear resistant tool made of steel cold working in metallurgy of pu00e0s

摘要

Punu00c7u00d5es and matrices su00e0lidas wear resistant tool made of steel cold working in metallurgy of pu00e0s. The present invention refers to the solid matrices and resistant to wear, made from tool steel for cold working by the process of metallurgy of powder and wha And contains no more than approximately 4% of tungsten.Preferably, the arrays according to the invention contain not more than about 4% molybdenum by weight and at least approximately 5% by weight of chromium in weight. The invention relates also to a combination punch and matrix, the matrix is manufactured from steel, cold working is formed by a process of powder metallurgy and contains less than about 4% by weight of tungsten.The puncture, can also be manufactured from cold steel in the process of powder metallurgy and contain at least about 4% by weight tungsten may have a formula different from that of the matrix. In addition, a drilling method is also disclosed.