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分别以20Cr Ni Mo和20Ni4Mo钢为基体材料制成销、盘试件,利用CVD技术在销表面制备Ti C+Ti(C,N)+Ti N复合陶瓷膜和氧乙炔堆焊钴基焊丝。对比研究复合陶瓷膜销、真空淬火复合陶瓷膜销、堆焊钴基焊丝销在不同介质环境(泥浆、混合介质)中不同载荷条件(静载、冲击载荷)下磨损前后的表面形貌及磨损量,同时测定销试件表面显微硬度;并分析淬火前后销试件表面复合陶瓷膜的膜厚、结合强度,最终分析出试件表面耐磨性。结果表明:在20Cr Ni Mo钢表面涂覆复合陶瓷膜(Ti C+Ti(C,N)+Ti N),无论是否进行真空淬火,用其制成的销试件硬度均较高,能有效降低粘着磨损。淬火复合陶瓷膜销与20Ni4Mo钢组成的摩擦副的抗磨损、抗冲击能力都较好。
TiC + Ti (C, N) + TiN composite ceramic films and oxyacetylene clad-based cobalt-based welding wire were prepared on the pin surface using 20Cr Ni Mo and 20Ni4Mo steel as the base material. The surface morphology and wear of composite ceramic membrane pins, vacuum-hardened composite ceramic membrane pins and co-clad cobalt-based wire pins before and after wear under different load conditions (static load and impact load) in different media environments The surface microhardness of the pin specimen was measured. The film thickness and bonding strength of the composite ceramic film on the surface of the pin specimen before and after quenching were analyzed, and finally the surface abrasion resistance of the specimen was analyzed. The results show that the hardness of pin specimens made of 20Cr Ni Mo steel coated with TiC + Ti (C, N) + TiN coated with or without vacuum quenching is high and effective Reduce adhesive wear. Quenching composite ceramic membrane pin and 20Ni4Mo steel friction pair composed of anti-wear, impact resistance are better.