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运用高能等离子弧束在常压下快速扫描均匀涂覆镍铬合金渗剂的磨辊辊齿表面,可对辊齿进行多元共渗和自激冷淬火复合强化处理,合金元素扩渗层达40μm,整个硬化层深度为200～270μm,合金化层硬度约为729.5HV,淬硬层硬度为815.2HV。通过硬度测定和组织分析,辊齿表层硬度提高约50%,硬度梯度分布合理,且齿有较好的韧性,可有效提高辊齿的耐磨性,延长辊齿使用寿命。
Using high-energy plasma arc beam to rapidly scan the surface of the roller of the roller evenly coated with Ni-Cr infiltrating agent at atmospheric pressure, the roller teeth can be subjected to multiple co-infiltration and self-quenching combined hardening process, the alloying element expanded layer reaches 40μm , The depth of the entire hardened layer is 200-270μm, the hardness of the alloyed layer is about 729.5HV, and the hardened layer hardness is 815.2HV. By hardness measurement and microstructure analysis, the surface hardness of the gear tooth is increased by about 50%, the hardness gradient distribution is reasonable, and the teeth have good toughness, which can effectively improve the wear resistance of the gear teeth and prolong the service life of the gear teeth.