超声振动对低搭接率激光熔覆层质量的影响 
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Effect of Ultrasonic Vibrations on Quality of Laser Cladding Layer with Low Overlap Rate
新疆大学机械工程学院, 新疆 乌鲁木齐 830047
图 & 表
图 1. 搭接率示意图
Fig. 1. Schematic of overlap rate
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图 2. 超声振动下不同搭接率熔覆层的宏观形貌。(a) 66%;(b) 50%;(c) 33%
Fig. 2. Macroscopic morphology of cladding layers with different overlap rates under ultrasonic vibration. (a) 66%; (b) 50%; (c) 33%
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图 3. 33%搭接率下熔覆层宏观形貌对比。(a)施加超声振动;(b)不施加超声振动
Fig. 3. Comparison of macroscopic morphology of cladding layer at 33% overlap rate. (a) With ultrasonic vibration; (b) without ultrasonic vibration
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图 4. 33%搭接率下熔覆层剖面的光学显微图。(a)不施加超声振动;(b)施加超声振动
Fig. 4. Optical micrographs of cladding layer profile with overlap rate of 33%. (a) Without ultrasonic vibration; (b) with ultrasonic vibration
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图 5. 33%搭接率下熔覆层的SEM图。(a)不施加超声振动;(b)施加超声振动
Fig. 5. SEM images of cladding layer with overlap rate of 33%. (a) Without ultrasonic vibration; (b) with ultrasonic vibration
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图 6. 33%搭接率下显微硬度的变化
Fig. 6. Change of microhardness with overlap rate of 33%
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图 7. 33%搭接率下的耐磨性对比
Fig. 7. Comparison of wear resistance with overlap rate of 33%
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表 145号钢各元素成分(质量分数,%)
Table1. Element composition of No. 45 steel (mass fraction, %)
| Element | C | Mn | Si | Cu | Ni | Cr | P/Fe |
|---|
| Value | 0.42-0.5 | 0.50-0.80 | 0.17-0.37 | ≤0.25 | ≤0.30 | ≤0.25 | Bal. |
|
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表 2Ni60自熔性合金粉末各元素成分(质量分数,%)
Table2. Element composition of Ni60 self-melting alloy powder (mass fraction, %)
| Element | C | Cr | B | Si | Fe | Ni |
|---|
| Value | 0.6-1.0 | 14-17 | 2.5-4.5 | 3-4.5 | ≤15 | Bal. |
|
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表 3激光熔覆工艺参数
Table3. Parameters of laser cladding process
| Laserpower /W | Spotdiameter /mm | Pulverizedspeed /(g·s-1) | Defouce /mm | Spotdiameter /mm |
|---|
| 1400 | 4 | 1.2 | 16 | 2 |
|
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王战, 孙文磊, 黄海博, 于江通, 刘金朵. 超声振动对低搭接率激光熔覆层质量的影响[J]. 激光与光电子学进展, 2019, 56(14): 141402. Zhan Wang, Wenlei Sun, Haibo Huang, Jiangtong Yu, Jinduo Liu. Effect of Ultrasonic Vibrations on Quality of Laser Cladding Layer with Low Overlap Rate[J]. Laser & Optoelectronics Progress, 2019, 56(14): 141402.
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