| GAO Ji,SONG De-yang,FENG Jun-wen.Influence of Processing Parameters on Geometrical Features of CBN Coatings by Laser Cladding on Titanium Alloy Surface[J],44(1):77-80,87 |
| Influence of Processing Parameters on Geometrical Features of CBN Coatings by Laser Cladding on Titanium Alloy Surface |
| Received:August 03, 2014 Revised:January 20, 2015 |
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| DOI： |
| KeyWord:laser cladding CBN coating geometrical features processing parameter |
| Author | Institution |
| GAO Ji |
Shenyang Aerospace University, Shenyang , China |
| SONG De-yang |
Shenyang Aerospace University, Shenyang , China |
| FENG Jun-wen |
Shenyang Aerospace University, Shenyang , China |
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| Abstract: |
| Objective To obtain the process parameters for CBN laser cladding of better morphology. Methods The CBN coatings were prepared by laser cladding on TC11 titanium alloy surface with CBN powder. An orthogonal test was designed and metallographic method was used to detect the geometric parameters of the cladding layer. The influencing law of the processing parameters including laser power, scanning speed, defocusing distance and preset thickness on the laser cladding layer morphology was researched. Results The width, height and molten pool depth of the cladding layer were changed as the laser power, scanning speed, defocusing distance and preset thickness increased. It was concluded that the scanning speed had the most important effect, followed by the laser power and the preset thickness, and then the defocusing distance. It indicated that the width of the cladding layer first increased and then decreased, the height of the cladding layer increased and the depth of molten pool decreased with the increase of laser power. The width, height and the molten pool depth of the cladding layer decreased with the increase of scanning speed, defocusing distance and preset thickness. Conclusion The optimal processing parameters were obtained, the laser power was 1400 W, the scanning speed was 4 mm/ s, the defocusing distance was 35 mm and the preset thickness was 0. 4 mm. |
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