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自从捷克斯洛伐克首次用化学硬化法铸出第一批铸件后,到现在已有九年了.在这九年中,这种新式的型砂操作方法已发展成为制造各种合金铸件的铸造工艺的一个重要部分.运用这方法使生产率有了显著的提高.
Nine years have passed since the first castings of Czechoslovakia were chemically hardened, and in these nine years the new method of molding sand has evolved into a casting process for the manufacture of various alloy castings An important part of this effort has been the dramatic increase in productivity.