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发明的背景 1.本发明的领域本发明概括地论述了金属的表面处理,尤其是那些在重载荷下要求特别耐磨的钢制件如牙轮钻头轴承表面的处理。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention generally discusses the treatment of surfaces of metals, especially those steel parts which require particularly wearable wear under heavy loads, such as roller cone bit bearing surfaces.