粉末冶金硬质合金钻头的浸渍烧结钎焊,是采用硬质合金“毛细管”浸渍法来进行的。其浸渍浊的基本原理是:高温时,液态粘结剂金属浸入与其本身有着浸润性的多孔性的碳化物基体中,并充满基体的所有空间,以此将碳化物颗粒牢固地粘结起来,冷却后便形成硬质合金。这种多孔性的碳化物基体,称为合金的骨架毛坯。骨架的孔隙度取决于毛坯的压制密度。因为其孔隙度足以构成骨架的“毛细 Powder metallurgy carbide drill immersion sintering brazing, is the use of carbide “capillary” impregnation method to carry out. The basic principle of immersion turbidity is: at high temperature, the liquid binder metal is impregnated into the porous carbide matrix with its own infiltration and filled with all the space of the matrix, so as to firmly bond the carbide particles, After cooling it forms a cemented carbide. This porous carbide matrix, called the alloy skeleton. The porosity of the skeleton depends on the compacting density of the blank. Because of its porosity enough to form the skeleton of the "capillary