激光切割热影响区的分析
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摘要
为确定不同厚度钢产品的激光切割热影响区的具体数值,在大量试验的基础上,采用硬度检测和金相组织分析方法,研究总结出了热影响区的变化规律,结果表明,对于同一种材料来说,被切割材料厚度对热影响区有显著影响,随着厚度的增大,热影响区随之增加。结合本试验结果,提出了GB/T 2975的修订建议,将激光切割方法作为资料性附录首次写入标准,按照标准中推荐保留的加工余量,可去除激光切割产生的热影响区。
To confirm the heat affected zone of laser cutting on steel with different thickness,based on a large number of tests,by the hardness testing and microstructure analysis,the change law of the heat affected zone is summed up.The results show that for the same material,the thickness of the cutted material has a significant effect on the heat affected zone. As the thickness increases,the heat affected zone increases. Combined with the results of the tests,a proposal for the revision of GB/T 2975 is put forward,and the laser cutting method is first written as a data appendix,which can remove the heat affected zone of laser cutting according to allowance recommended in the standard.
To confirm the heat affected zone of laser cutting on steel with different thickness,based on a large number of tests,by the hardness testing and microstructure analysis,the change law of the heat affected zone is summed up.The results show that for the same material,the thickness of the cutted material has a significant effect on the heat affected zone. As the thickness increases,the heat affected zone increases. Combined with the results of the tests,a proposal for the revision of GB/T 2975 is put forward,and the laser cutting method is first written as a data appendix,which can remove the heat affected zone of laser cutting according to allowance recommended in the standard.
引文
[1]姚令,吴楠,韩宪军,等.光纤激光切割及其在精密加工中的应用展望[J].热加工工艺,2018,47(7):11.
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[8]王调品.激光低速切割对热影响区宽度和表面粗糙度的影响[J].电焊机,2017,47(3):117.
[9]佟明.板材激光切割表面质量影响因素的实验研究[J].机械设计与制造,2010,10:123.
[10]国家市场监督管理总局,中国国家标准化管理委员会.GB/T 2975-2018钢及钢产品力学性能试验取样位置及试样制备[S].北京:中国标准出版社,2018.
[2]O'Neill W,Sparkes M,Varnham M,et al.High power high brightness industrial fiber laser technology[C]//International Congress on Applications of Lasers and Electro-Optics.San Francisco:2004:301.
[3]Himmer T,Lütke M,Morgenthal L,et al.Cutting applications with high brightness lasers[J].Journal for Technology of Plasticity,2008,33(1/2):63.
[4]张燕.一种优化激光切割工艺参数的方法[J].时代农机,2017,44(9):62.
[5]张宪,穆丹宁.金属材料维氏硬度硬度测量不确定度的评定[J].理化检验:物理分册,2017,53(6):412.
[6]沈康华.浅析维氏硬度试验力的误差分析及检定校准[J].轻工标准与质量,2017,4:66.
[7]张坤.激光切割参数对切割质量影响的试验研究[J].金属加工:热加工,2017,22:16.
[8]王调品.激光低速切割对热影响区宽度和表面粗糙度的影响[J].电焊机,2017,47(3):117.
[9]佟明.板材激光切割表面质量影响因素的实验研究[J].机械设计与制造,2010,10:123.
[10]国家市场监督管理总局,中国国家标准化管理委员会.GB/T 2975-2018钢及钢产品力学性能试验取样位置及试样制备[S].北京:中国标准出版社,2018.