我厂铸钢件生产,过去采用大气坭芯暗冒口,因而每炉钢水的成品率较低,钢水浪费很大。针对这一问题,我厂工人与技术人员发挥了大胆革新、集体创造的革命精神,克服了重重困难与阻碍,现已在七种铸件上成功地使用了发热暗冒口。实践证明,采用发热冒口,可以节约大量钢水,提高铸件的成品率。 I plant castings production, the past adopted the atmosphere obscene die mouth, so each furnace molten steel lower yield, a lot of waste of molten steel. In response to this problem, our factory workers and technicians have played a bold innovation, collective creation of the revolutionary spirit, to overcome the numerous difficulties and obstacles, is now successfully used in seven kinds of castings fever obscurant. Practice has proved that the use of heating riser, you can save a lot of molten steel to improve the casting yield.