PROGRESS AND PROSPECT OF PREPARATION PROCESS OF BREATHABLE STEEL
As a porous metal material,breathable steel is widely used in metallurgy,chemistry,biology,environmental protection and energy fields.It is mainly used to control and distribute air flow,while it has heat dissipation effect and greatly improves cooling forming rate in the mold manufacturing process.Because of its excellent properties,breathable steel has attracted extensive attention at home and abroad,and has become a hot spot in the field of new functional materials.Different preparation processes have significant effects on the structure and comprehensive properties of breathable steel.How to effectively improve the comprehensive properties of breathable steel has become an urgent research topic.The process methods for preparing permeable steel at home and abroad were systematically introduced,including powder metallurgy,additive manufacturing and gel casting molding+microwave sintering.The influences of particle size of raw material powder and sintering temperature on the preparation process and permeable properties of permeable steel were briefly analyzed,and the stability control of the comprehensive properties of permeable steel was analyzed.The future development prospect of breathable steel preparation is also prospected.
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