本文论述了冷硬树脂砂在混碾、硬化和浇注过程中分析出对人体有害的气体,必须注意通风;文中还介绍了国外某些冷硬树脂砂析出的气体种类及发气速度的计算方法。本文以本厂3000吨铸件铸造车间所用的呋喃Ⅲ型树脂自硬砂为例,计算了在硬化、浇注阶段时析出的各种气体发气量,为配备通风装置提供了依据。 This paper discusses the cold resin sand in the milling, hardening and pouring process to analyze the harmful gases, we must pay attention to ventilation; the paper also introduced some foreign chilled resin sand precipitation of gas species and gas velocity calculation method . Taking the furan Ⅲ resin self-hardening sand used in the 3000 ton casting foundry workshop of our factory as an example, the gas evolution amount of various gases precipitated during the hardening and pouring stages was calculated, which provided the basis for the ventilation device.