The investment casting process of double metal cracking connecting rod was analyzed by designing side-pouring ways

and filling and solidification process was simulated by ProCAST software.Meanwhile

the orthogonal experiment method was used to optimize the process parameters

and cracking connecting rod was produced success fullg.The results show that in side gating system

sprue can play agood feeding effect

where only shrinkage porosity can be observed in the sprue cup and SPR.With the pouring temperature of 1 600℃

mould preheating temperature of 1 200℃

the cracking material preheat temperature of 500℃

shell mold is baked ahead

and then the cracking material is inserted to pour

so two kinds of materials with good bonding can be produced

meeting production requirement.