耐热钢排气歧管铁型覆砂铸造工艺

Sand-Lined Metal Mold Casting Process of Heat Resistant Steel Exhaust Manifold

小型薄壁耐热钢件生产中,钢液粘度大,流动性差,易出现冷隔缺陷。介绍了铁型覆砂工艺生产壁薄耐热钢排气歧管的可行性,以及砂箱、浇注系统、排气系统的设计,涂料的选用。

In the production of small-sized thin-walled heat resistant steel parts,the liquid steel has high viscosity,poor fluidity,and is prone to occur cold lap defects.In the present paper,the feasibility of producing thin-walled heat resistant steel exhaust manifold with sand-lined metal mold process,as well as the design of molding box,gating system,exhaust system and the selection of coating were introduced.