Metal material centrifugal powdering method based on electron beam melting

• Main Authors: SHEN XIANFENG, WANG GUOWEI, LI JIANMING, JIA RU, TENG WENHUA, ZHANG SHENGWANG
• Format: Patent
• Language: Chinese; English
• Published: 15.01.2019
• Subjects: CASTING; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; PERFORMING OPERATIONS; POWDER METALLURGY; TRANSPORTING; WORKING METALLIC POWDER

The invention discloses a metal material centrifugal powdering method based on electron beam melting. The method uses an electron beam as a heat source, transfers heat to a surface of a metal base material by electron beam irradiation, and forms a molten pool on the metal base material; and at the same time, utilizes a the centrifugal force of the rotation of the metal base material to break up the melt into small droplets and then solidify the same into powder. The method of the invention uses the electron beam as the heat source, and uses the electron beam power, the electron beam rotation scanning angular velocity and the metal base material rotation angular velocity as control parameters of the heat input; transfers heat to the surface of the metal base material rapidly by using the electron beam irradiation and forms a molten pool, and precisely controls the size of the molten pool by controlling the heat input; and at the same time, breaks the melt into small droplets by using the centrifugal force gene