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把已加热至淬火温度的工件放在白色粉末的氰酸钾铝中滚动几次,然后再淬入水中,这样可显著提高工件硬度。其主要原因是由于表面形成了
The workpiece has been heated to quenching temperature on the white powder of potassium cyanate aluminum rolling a few times, and then quenched into water, which can significantly improve the hardness of the workpiece. The main reason is that the surface is formed