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1·The surface alloying of steel castings without fusing agent was studied by means of orthogonal experiment design.

利用正交试验方法研究了铸钢件的无熔剂表面合金化。

2·Results showed that satisfactory alloyed layer could be also formed on steel castings without adding fusing agent into alloy coating.

研究表明，合金涂层中不加熔剂也能形成质量较好的合金层；

3·The invention can greatly reduce the cost of the fusing agent, and save the cost by at least 40 percent according to the price of the current market.

本发明能大大降低熔片成本，根据目前市场价格，节约成本至少40%。