高纳以契克同志是捷克斯洛伐克机械制造业生产革新者代表团的团员,11月5日应邀在石景山钢铁公司机械厂铸钢车间作了一次现场表演,内容是CO_2硬化法。由于时间的限制,只作了一个型芯,现将表演情况报导如下: 一、表演对象:图1所示的型芯,原来的工艺采用普通粘土砂制造,刷涂料以后烘干,因此,制芯的周期很长,而且由于干强度不高,采用了相当 Gonzalez-Chick was a member of Czechoslovakia’s machinery manufacturing industry innovator delegation. On November 5, he was invited to give a live performance at the steel plant of Shijingshan Iron & Steel Co., Ltd., on CO 2 hardening method. Due to time constraints, only made a core, the performance is now reported as follows: First, the show objects: Figure 1 shows the core, the original process using ordinary clay sand, brush paint after drying, therefore, the system The cycle of the core is long, and due to the dry strength is not high, using a considerable