根据我厂生产铸钢齿轮的经验,总结出一套铸钢齿轮冒口的计算方法:推荐一种便于铸造的单幅板齿轮结构:对比了齿轮轮缘来用内侧补贴和外侧补贴的优缺点。认为轮缘的内侧补贴使冒口的中心对准了轮缘的热节,利于补缩,钢水收得率可提高4~6%,使齿面组织致密,减少废品损失,延长使用寿命,操作简便,节约能源,经济效益显著。 According to the experience of our factory in producing steel gears, a set of calculation method of steel gear risers is summarized: a single-plate gear structure for casting is recommended: the advantages and disadvantages of the inside and outside subsidies are compared with the gear rim . It is considered that the inside subsidy of the rim makes the center of the riser aligned with the hot section of the rim, which is conducive to shrinkage, and the yield of molten steel can be increased by 4 to 6% to make the tooth surface structure dense, reduce the waste loss and extend the service life. Simple, save energy, significant economic benefits.