天津市通过铸工同工种竞赛,召开了一次铸工工作会议,会议内容,着重在先进经验的介轺,其中由天津铜厂对推行压边浇口的经验作了一次报告。应该指出,压边浇口在天津市有了某些改进,运用方面也有了某种程度的扩大。例如:天津纺织机械厂将压边浇口改成缝隙式浇口,一次浇铸多个铸件获得成功:天 In Tianjin, a workshop for casting workers, a conference for casting workers, and a medium for advanced experience were held in which the workers of the same type in the competition were cast, in which Tianjin Copper Plant made a report on the experience of implementing pressure-sprue gates. It should be pointed out that there are some improvements in the compression gate in Tianjin, the use has also been some extent of expansion. For example: Tianjin Textile Machinery Factory will pressure edge into a slit gate, casting a number of castings to be successful: days