42CrMo钢表面激光熔覆涂层的研究现状及进展
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孙方红, 任延杰, 宋文卿
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Research Status and Progress of Laser Clad Coatings on 42CrMo Steel
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SUN Fanghong, REN Yanjie, SONG Wenqing
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表1 42CrMo钢激光熔覆设备及最佳工艺参数[19~24]
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Table 1 Laser cladding equipments and optimal process parameters for 42CrMo steel[19~24]
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Process Coating | NiCrBSi | Fe55 | Stellite-6 | TiC | Co-WC-TiC- diamond-ZrH2 | FeCoNiCr- Nb0.5Mo0.25 |
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| Equipment model | YLS-6000 | ZKZM RF-2000 | TRUMPFDDISK-12003 | Unspecified | FWC100C100-F200 | FL020 | | Laser power / kW | 2 | 2 | 2.5 | 3 | 0.70 | 1.2-1.4 | | Scanning speed mm·min-1 | 360 | 260 | 480 | 220 | 180 | 180 | |
| Powder feed rate g·min-1 | 15 | - | 14 | 15 | 21 | - | |
| Overlapping ratio / % | - | 40 | 30 | 30 | 30 | - | | Spot diameter / mm | - | 3 | 4 | 3 | - | 4 | | Pretreatment | 120 ℃, 2 h | 120 ℃, 2 h | Temperature not | 300 ℃ | 300-310 ℃, | < 100 ℃, 2 h | | | | specified, 2 h | | Sandbox insulation | | | Coating thickness | - | Single layer: | - | 2-5 | - | 1.5 | | mm | | 0.582 mm, three | | | | | | | layers: 1.55 mm | | | | | | Powder particle size | 45-105 | 50-100 | 50-160 | 50-100 | Co and WC: 60 | 38-74 | | μm | | | | | Diamond powder: 100 | | | | | | | TiC and ZrH2: 0.5 | |
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