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用高能等离子束在常压下快速扫描涂敷合金渗剂的柴油机气缸套内表面,可实现多元共渗+自激冷淬火复合硬化,获得的总硬化层深度大于150μm,硬化层显微硬度可达927HV005。对硼铸铁气缸套和等离子多元共渗气缸套进行了磨损对比试验,结果证明,等离子多元共渗气缸套的耐磨性比硼铸铁气缸套高26%,配副活塞环耐磨性提高大约23%,且生产过程稳定,成本低,效率高。
Using high-energy plasma beam to rapidly scan the inner surface of the diesel cylinder liner coated with the infiltrating agent at atmospheric pressure to achieve multiple co-infiltration + self-quench hardening and compound hardening, the total hardened layer depth is greater than 150 μm, and the hardened layer can have microhardness Up to 927HV005. The wear comparison test between boron cast iron cylinder liner and plasma multiple permeation cylinder liner shows that the wear resistance of plasma multiple permeation liner is 26% higher than that of boron cast iron cylinder liner and the wear resistance of secondary piston ring is about 23 %, And the production process is stable, low cost, high efficiency.