激光化学复合抛光工艺参量对304不锈钢性能的影响
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摘要
为了提高304不锈钢表面抛光质量,采用激光化学复合抛光的方法分别在纯净水和抛光液中对304不锈钢进行抛光实验研究,并对1064nm激光的加工功率和扫描次数对加工区域表面形貌和表面质量的影响进行了分析。气泡对抛光液在不锈钢表面形成的钝化膜产生破坏作用,造成抛光效果不均匀,表面粗糙度增大。结果表明,在抛光液中的激光抛光在抑制表面氧化发黑的同时,能够显著改善表面形貌,表面粗糙度由0.845μm下降到0.181μm;激光化学复合抛光304不锈钢表面质量与抛光功率和扫描次数有密切关系;当抛光功率过高或者扫描次数过大时,304不锈钢表面会产生大量气泡。采用激光化学复合抛光,可以提高不锈钢抛光质量、减少环境污染,该方法具有极大的应用前景。
In order to improve the surface polishing quality of SUS 304, a laser chemical composite polishing method was proposed based on chemical polishing and laser polishing. SUS 304 was adopted as workpiece being polished by 1064 nm laser in purified water and polishing solution, respectively. The influence of laser processing power and scanning times on the surface topography and quality of machined area was analyzed. The bubbles have a damaging effect on the passivation film formed on the surface of stainless steel, resulting in uneven polishing effect and increasing surface roughness. The results show that, laser polishing in polishing solution can significantly improve surface topography while suppressing surface oxidation blackening, and the surface roughness decreases from 0.845μm to 0.181μm. Laser chemical composite polishing can improve the polishing quality of stainless steel and reduce environmental pollution. This study has a great application prospect.
In order to improve the surface polishing quality of SUS 304, a laser chemical composite polishing method was proposed based on chemical polishing and laser polishing. SUS 304 was adopted as workpiece being polished by 1064 nm laser in purified water and polishing solution, respectively. The influence of laser processing power and scanning times on the surface topography and quality of machined area was analyzed. The bubbles have a damaging effect on the passivation film formed on the surface of stainless steel, resulting in uneven polishing effect and increasing surface roughness. The results show that, laser polishing in polishing solution can significantly improve surface topography while suppressing surface oxidation blackening, and the surface roughness decreases from 0.845μm to 0.181μm. Laser chemical composite polishing can improve the polishing quality of stainless steel and reduce environmental pollution. This study has a great application prospect.
引文
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[2] LAZAR A M,YESPICA W P,MARCELIN S,et al.Corrosion protection of 304L stainless steel by chemical vapor deposited alumina coatings[J].Corrosion Science,2014,81(2):125-131.
[3] XU Z K.Research on automatic mechanical polishing technology and the process optimization for stainless steel thin-wall material workpieces[D].Wuhan:Huazhong University of Science and Technology,2013:27-90(in Chinese).
[4] MA D,XU L G,LI Sh B,et al.Progress in the research of chemical polishing liquid for stainless steel[J].Material Protection,2014,47(9):54-55 (in Chinese).
[5] CHEN H.Electrochemical polishing behavior of stainless steel in H2SO4-H3PO4 mixed acid[J].Plating & Finishing,2014,36(5):37-40(in Chinese).
[6] WANG Y,MAN R L,LIANG Y H,et al.Progress in research on surface polishing technologies for stainless steel [J].Electroplating & Pollution Control,2012,32(2):1-4(in Chinese).
[7] FANG J L,HAN K P.Quantitative study on chemical polishing of stainless steel[J].Electroplating & Pollution Control,1995,15(6):15-17(in Chinese).
[8] ZHOU M,WEI X,XIE X Zh,et al.Study on polishing process of Al2O3 ceramic with 355nm ultraviolet laser[J].Laser Technology,2014,38(4):556-560(in Chinese).
[9] DAI W,ZHENG Zh Zh,LI J J,et al.Research Progress of laser polishing on the metal surface[J].Laser & Optoelectronics Progress,2015,52(11):110001 (in Chinese).
[10] HUA X G,WEI X,ZHOU M,et al.Experimental study on mechanism of 355nm ultraviolet laser polishing of Al2O3 ceramics[J].Chinese Journal of Lasers,2014,41(12):1203002 (in Chinese).
[11] BORDATCHEV E V,HAFIZ A M K,TUTUNEA-FATAN O R.Performance of laser polishing in finishing of metallic surfaces[J].International Journal of Advanced Manufacturing Technology,2014,73(1/4):35-52.
[12] NA R,CHEN T.Research of YAG laser of 38CrMoAl surface[J].Laser & Optoelectronics Progress,2016,53(1):11402 (in Chinese).
[13] PERRY T L,WERSCHMOELLER D,LI X C,et al.The effect of laser pulse duration and feed rate on pulsed laser polishing of micro-fabricated nickel samples[J].Journal of Manufacturing Science and Engineering,2009,131(3):031002.
[14] ZHU B,QI L T,WANG Y.The experimental study of water-assisted laser machining[J].Modern Manufacturing Engineering,2003,26(12):73-74(in Chinese).
[15] CHEN T,WANG C H,WU J,et al.The current research situation of laser polishing technology[J].New Technology & New Process,2009,31(9):70-73(in Chinese).
[16] DU Y L,MA N,LI H B.Surface treatment of austenitic stainless steel equipment in nuclear power plant-pickling and passivation[J].Science &Technology Information,2011,28(11):44-47(in Chinese).
[17] YAO Q F,GUO J Ch,GUAN C Sh.A study on stainless steel chemcial polishing at room temperature[J].Plating & Finishing,2000,28(2):29-32(in Chinese).
[18] YAO Y W,QIU L,ZHAO Ch M,et al.Chemical polishing technology of stainless steel[J].Plating & Finishing,2010,32(9):5-7(in Chinese).
[19] YIN S H,GUO Zh N,CHEN T N,et al.The explosive boiling experiment study on underwater laser processing[J].Electromachining & Mould,2016,51(3):36-41(in Chinese).
[20] LI W,YANG K Ch,XIA M,et al.Distribution characteristics of scattered light intensity on coated air bubble in water[J].Acta Optica Sinica,2008,28(4):799-803(in Chinese).