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在伟大领袖毛主席亲自制定的“鼓足干劲,力争上游,多快好省地建设社会主义”总路线的光辉照耀下,我们车间广大革命职工,高举“鞍钢宪法”伟大红旗,开展群众性的技术革新活动,大家破除迷信,解放思想,发扬敢想敢干的革命精神,对硅水玻璃发热自硬砂进行了试验。在试验过程中发现:在这种砂里加入少量黑色石墨粉,能明显地促进发热硬化反应,并能大大地缩短发热硬化的时间,起到快速自硬的作用。石墨粉的加入,弥补了单纯用硅水玻璃配制的砂在常温反应速度较慢,以及在型砂水分高和在低温季节难以发热硬化的缺陷。从图1可见,随着石墨
With the glorious shining of the general line established by the great leader Chairman Mao himself in “building a strong and energetic upper reaches and building a socialist society that is more efficient, more economical and more economical,” the vast revolutionary workers in our workshop hold high the great red banner of the Ansteel Constitution and carry out mass technological innovations Activities, we get rid of superstition, emancipate the mind, carry forward the spirit of dare to think about the revolutionary spirit of the self-hardening of silica water glass was tested. During the test, it was found that adding a small amount of black graphite powder into this sand can obviously promote the heat-hardening reaction and greatly shorten the time of heat-hardening and play a role of rapid self-hardening. The addition of graphite powder compensates for the slow reaction of sand prepared with pure water glass at normal temperature, and the defects of high water content in molding sand and difficulty of heat hardening in low temperature season. As can be seen from Figure 1, with graphite