铸钢件浇注跑火的原因及预防措施

Cause and Countermeasures of Run-out during Pouring Steel Castings

在铸造现场，铸钢件浇注时跑火原因包括：（1）分型面处理不到位；（2）铸件或浇注系统吃砂量小；（3）直浇道拐弯处漏钢；（4）浇注系统漏钢和下箱下沉；（5）浇注系统型砂分层；（6）抬箱、涨箱、压箱。根据这6种原因采取了相应的预防措施，有效地防止了铸钢件浇注跑火事故的发生。

Causes why run-out will occur when pouring steel castings in casting site are as tollows： （a） unfavoured parting plane treatment; （b） less sand holding amount in the pouring system; （e） molten steel leakage in sprue turn; （d） molten steel leakage in the pouting system and drag sinking; （e） moulding sand lamination in the pouring system; （f） bleeder, swell and compaction. The appropriate measures preventing the run-out from occurring have been adopted, thus effectively eliminating the run-out.