The process may involve the use of molten sodium cyanide mixtures;pack carburizing with activated solid material such as charcoal or coke, gas or oil carburizing, and dry cyaniding.

• 工艺可能涉及到熔化的氰化钠混合物，带有活性固体物质如活性炭、焦炭等的固体渗碳，气体或油性渗碳剂，还有干法氰化。