APPLICATION OF HIP TECHNOLOGY FOR STEEL-BONDED CARBIDE

To solve the problems of producing big size and irregular shape products and to improve their properties an experimontal research has been made by HIP technology for producing steel-bonded carbide. The recommended technological parameters of HIP obtained by orthogonal design are as follows: pressure 83Mpa, temperature 1140℃ and holding time 4. hours. In comparison with tranditional technologies, the density and hardness of products made by CIP, vacuum pre-heating, HIP and post forging were improved and the bending strength of these products increases by a factor of 18%.