在铸造生产中普遍采用无油粘结剂来代替食粮及油类粘结剂,不但可以降低粘结剂的成本,同时在正确选择和合理使用粘结剂的条件下,还可以大大提高铸件的质量.苏联机床制造工业中,普遍应用的是KT粘结剂.这种粘结剂不仅可以用作坭芯粘结剂,同时也可作为砂型及表面干燥砂型的粘结剂;它不但具有较大的干强度,并且也 In casting production, the common use of oil-free adhesive instead of food and oil binder, not only can reduce the cost of the binder, at the same time the correct choice and reasonable use of binder conditions, but also can greatly improve the casting Quality. In the Soviet machine tool manufacturing industry, KT adhesive is widely used. This adhesive can not only be used as adhesive core, but also as a sand and surface dry sand binder; it not only has more Large dry strength, too