Study on Technology of Multi-Trace Overlapping and Rapid Prototype by Broad-Beam Laser Cladding

2013 ◽  
Vol 750-752 ◽  
pp. 2131-2134
Author(s):  
Yi Shao Zhang ◽  
Ge Yan Fu ◽  
Fei Cao ◽  
Ji Li
Keyword(s):  
Laser Cladding ◽  
Physical Process ◽  
Rapid Prototype ◽  
Broad Beam ◽  
Beam Laser ◽  
And Performance ◽  
Microstructure And Performance

Obvious physical process differences exist between overlapping area and non-overlapping area by broad-beam laser cladding,also the parallel and vertical interface of RP.By comparing the microstructure and performance, the result shows: the microstructure of overlapping area has broken crystal,the size of overlapping area crystal is bigger than the non-overlapping one.Repeated heating makes overlapping area secondary dissolving out and having higher rigidity;Between layer and layer of broad-beam laser cladding RP is metallurgical combination completely,the degree of uniformity of central microstructures performance is good,hardness of the bow shape area between overlapping layer and matrix is greatly increased.

Research of Direct Output Semiconductor Broad-beam Laser Cladding Fe-C-Cr-Si-Mo Alloy in Laser Composite Manufacturing of Valve

Applied laser ◽  
2015 ◽  
Vol 35 (2) ◽  
pp. 182-187
Author(s):  
陈智君 Chen Zhijun ◽  
陈飞 Chen Fei ◽  
孔建强 Kong Jianqiang ◽  
周志勇 Zhou Zhiyong ◽  
姚建华 Yao Jianhua
Keyword(s):  
Laser Cladding ◽  
Composite Manufacturing ◽  
Broad Beam ◽  
Beam Laser

PREPARATION, MICROSTRUCTURE AND PERFORMANCE OF NANOSCALE CERAMICS REINFORCED HARD COMPOSITE COATING

2014 ◽  
Vol 21 (01) ◽  
pp. 1450004 ◽  
Author(s):  
PENG LI
Keyword(s):  
Composite Coating ◽  
Laser Cladding ◽  
Sliding Wear ◽  
Rapid Heating ◽  
Dry Sliding Wear ◽  
Nanoscale Particles ◽  
Heating And Cooling ◽  
And Performance ◽  
First Time ◽  
Microstructure And Performance

This paper is based on the dry sliding wear of Stellite SF 12- B 4 C - TiN - Mo composite coating deposited on a pure Ti using a laser cladding technique, the parameters of which provide almost crack-free composites with low porosity. To the best of our knowledge, it is the first time that Stellite SF 12- B 4 C - TiN - Mo mixed powders are deposited as the hard composites by a laser cladding technique. Scanning electron microscope images indicate that the nanoscale particles are produced in such coating. The fact that due to the sufficiently rapid heating and cooling rates of the laser cladding technique, the ceramics, such as TiC or TiB 2 did not have enough time to grow up, resulting in the formation of the nanoscale particles. Compared with a pure Ti substrate, the increments of the micro-hardness and wear resistance are obtained for such composite coating.

scholarly journals Effects of TiC and rare earth on the microstructure and performance of LASER cladding Mo2FeB2

2021 ◽  
pp. 113-118
Author(s):  
Z.X. Zhang ◽  
H.F. Tian ◽  
F.L. Tantai ◽  
H. Liu ◽  
W. Wang ◽  
...  
Keyword(s):  
Rare Earth ◽  
Laser Cladding ◽  
And Performance ◽  
Microstructure And Performance

Broad-beam laser cladding of Al–Si alloy coating on AZ91HP magnesium alloy

2006 ◽  
Vol 201 (6) ◽  
pp. 2701-2706 ◽  
Author(s):  
Yali Gao ◽  
Cunshan Wang ◽  
Qi Lin ◽  
Hongbin Liu ◽  
Man Yao
Keyword(s):  
Magnesium Alloy ◽  
Laser Cladding ◽  
Alloy Coating ◽  
Broad Beam ◽  
Beam Laser

scholarly journals The Effect of Laser Scanning Speed on Microstructure and Performance of Cr3C2-NiCr Cermet Fabricated by in-situ Laser Cladding

2021 ◽  
pp. X
Author(s):  
Deyuan LOU ◽  
Shaokun YANG ◽  
Sheng MEI ◽  
Qing LIU ◽  
Jian CHENG ◽  
...  
Keyword(s):  
Laser Cladding ◽  
Laser Scanning ◽  
Scanning Speed ◽  
Powder Mixtures ◽  
Laser Scanning Speed ◽  
Nickel Based Alloy ◽  
And Performance ◽  
Microstructure And Performance ◽  
Carbide Content

To explore the effect of laser scanning speed on the microstructure and performance of Cr3C2-NiCr cermet layers fabricated by in-situ laser cladding, Cr3C2-NiCr cermet layers were laser cladded from Ni/Cr/Graphite (25:65:10 wt.%) elemental powder mixtures. The microstructures of the laser cladded cermet layers and the formation mechanism were investigated. In addition, the effect of laser scanning speed on the microstructure, friction and corrosion performance of the Cr3C2-NiCr cermet layers was studied. The results indicated that the in-situ laser cladded Cr3C2-NiCr cermet layers were composed of NiCr binder and Cr3C2. The laser scanning speed had a significant influence on the carbide content, composition and size. Furthermore, it affected the in-situ laser cladded cermet layer’s hardness and wear resistance. The corrosion resistance of the in-situ laser cladded cermet layer was superior to that of laser cladded nickel-based alloy and was improved with decreasing laser scanning speed.

Microstructure and Performance of Laser Cladding Fe-Based Alloy on Cr12MoV Steel

Applied laser ◽  
2013 ◽  
Vol 33 (1) ◽  
pp. 14-17
Author(s):  
楼程华 Lou Chenghua ◽  
路远航 Lu Yuanhang ◽  
骆芳 Luo Fang ◽  
董刚 Dong Gang ◽  
姚建华 Yao Jianhua
Keyword(s):  
Laser Cladding ◽  
And Performance ◽  
Microstructure And Performance

Comparative Study on Microstructure and Performance of WC/SS316L Composite Coatings Prepared by Supersonic Laser Deposition and Laser Cladding

2016 ◽  
Vol 43 (11) ◽  
pp. 1102002
Author(s):  
李鹏辉 Li Penghui ◽  
李 波 Li Bo ◽  
张群莉 Zhang Qunli ◽  
杨理京 Yang Lijing ◽  
李祉宏 Li Zhihong ◽  
...  
Keyword(s):  
Comparative Study ◽  
Laser Cladding ◽  
Composite Coatings ◽  
Laser Deposition ◽  
Supersonic Laser Deposition ◽  
And Performance ◽  
Microstructure And Performance

Microstructure and Performance of Laser Cladding Fe-Based Alloy on Cr12MoV Steel

Applied laser ◽  
2013 ◽  
Vol 33 (1) ◽  
pp. 14-17
Author(s):  
楼程华 Lou Chenghua ◽  
路远航 Lu Yuanhang ◽  
骆芳 Luo Fang ◽  
董刚 Dong Gang ◽  
姚建华 Yao Jianhua
Keyword(s):  
Laser Cladding ◽  
And Performance ◽  
Microstructure And Performance
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