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采用滴注式气体多元共渗技术将碳、氮、氧、硫、硼元素同时渗入W9Mo3Cr4V钢表面形成改性层,并对其组织和性能进行了研究。结果表明:经多元共渗后,高速钢表层由氧化疏松层和多元共渗层构成;改性层硬度最高达到1200 HV0.1以上,干磨损条件下耐磨性较未共渗试样有较大提高,耐蚀性也明显优于未共渗试样。将此工艺应用到刀具的强化中能够有效地提高刀具的耐用性。
Adopting drip gas multicomponent osmosis technology, carbon, nitrogen, oxygen, sulfur and boron elements penetrate into the surface of W9Mo3Cr4V steel to form a modified layer at the same time, and the microstructure and properties are studied. The results show that the surface layer of high-speed steel consists of oxidized and loose layers and multicomponent permeation layer after mulit-permeation. The hardness of the modified layer reaches 1200 HV0.1 or more, and the wear resistance under dry wear condition is better than that of the untreated sample Large increase, corrosion resistance is also significantly better than the sample did not infiltrate. The application of this technology to the strengthening of the tool can effectively improve the durability of the tool.