根据部标规定的标准产品和我们生产过的特殊规格制品的形状,国产标准和常用的油石截面大致可以分为三种类型:即具有可选基面的、圆形的和带圆弧面的复杂形状的。根据这几种类型油石形状的特性,我们研制了以热蜡铸工艺生产这些油石的三类组合式模具。 According to the Ministry of standard standard products and we have produced special specifications of the product shape, domestic standards and common stone section can be divided into three types: that is, with the optional base surface, round and curved surface Complex shape According to the characteristics of these types of whetstone shapes, we have developed three types of combined molds that produce these whetstone by a hot wax casting process.