高频复合双钨极氩弧焊方法与数字电源研制
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摘要
提出了一种优质高效低耗的新型非熔化极复合焊接工艺方法,并研制出新型高频复合双钨极TIG电源,可同时输出两路电流波形,一路为高频方波电流,其基值电流0~300 A,峰值电流0~100 A,频率0~80 kHz,占空比0~100%,脉冲电流变化率高达50 A/μs;另一路为变极性方波脉冲电流,其正负半波幅值为0~500 A,频率0~100 Hz,占空比0~100%,变极性电流变化率高达300 A/ms.测验结果表明,所设计的高频复合双钨TIG焊电源达到了预期设计目标,高频方波电流在80 kHz频率时仍然具有较快的上升和下降沿.最后采用铝合金板进行了堆焊试验,试验结果表明,焊接过程稳定,焊缝成形良好.
A new high quality and low consumption type of non-melting welding method was put forward, and a high frequency hybrid T-TIG power supply was developed,which could output two type current waveforms simultaneously. One was high frequency square current waveform with base current of 0~300 A, peak current of 0~100 A, frequency of 0~80 k Hz, duty ratio of 0~100%, current rate of change up to 50 A/μs. The other was variable polarity square wave pulse current waveform with output current amplitude of 0~500 A, frequency of 0~100 Hz, duty ratio of0~100%, current rate of change up to 300 A/ms. The test results of the power source indicated that the design of high frequency hybrid T-TIG power source has reached the anticipated design object, and the high frequency square current still has a rapid rising and falling edge change rate at the frequency of 80 k Hz. At last, the welding test was carried out by using aluminum alloy plate, and the test results shown that the welding process was stable and the weld molding was good.
A new high quality and low consumption type of non-melting welding method was put forward, and a high frequency hybrid T-TIG power supply was developed,which could output two type current waveforms simultaneously. One was high frequency square current waveform with base current of 0~300 A, peak current of 0~100 A, frequency of 0~80 k Hz, duty ratio of 0~100%, current rate of change up to 50 A/μs. The other was variable polarity square wave pulse current waveform with output current amplitude of 0~500 A, frequency of 0~100 Hz, duty ratio of0~100%, current rate of change up to 300 A/ms. The test results of the power source indicated that the design of high frequency hybrid T-TIG power source has reached the anticipated design object, and the high frequency square current still has a rapid rising and falling edge change rate at the frequency of 80 k Hz. At last, the welding test was carried out by using aluminum alloy plate, and the test results shown that the welding process was stable and the weld molding was good.
引文
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[2]Kobayashi K,Nishimura Y,Iijima T,et al.Practical application of high efficiency twin-arc TIG welding method(sedar-TIG)for pclng storage tank[J].Welding in the World,2013,48(7-8):35-39.
[3]Kobayashi K,Yuki M,Tejima A,et al.Development of high efficiency TIG welding method(SEDAR-TIG)[J].Ishikawajima-Harima Giho,2002,35(42):137-142.
[4]杨春利,林三宝.电弧焊基础[M].哈尔滨:哈尔滨工业大学出版社,2003.
[5]王树保,张海宽,冷雪松,等.双钨极氩弧焊工艺及焊缝成形机理分析[J].焊接学报,2007,28(2):21-24.Wang Shubao,Zhang Haikuan,Leng Xuesong,et al.Twin-electrode TIG welding procedure and mechanism of weld formation[J].Transactions of the China Welding Institution,2007,28(2):21-24.
[6]Mazzola M S,Molen G M.Modeling of a DC glow plasma loudspeaker[J].The Journal of the Acoustical Society of America,1987,81(6):1972-1978.
[7]吴敏生,段向阳,李路明,等.电弧超声的激发及其特性研究[J].清华大学学报(自然科学版),1999,39(6):110-112.Wu Minsheng,Duan Xiangyang,Li Luming,et al.Study of arc-ultrasonic excitation and its characteristics[J].Journal of Tsinghua University:Science and Technology,1999,39(6):110-112.
[8]齐铂金,许海鹰,周兴国,等.快变换超音频直流脉冲TIG焊[J].焊接学报,2009,30(7):57-60.Qi Bojin,Xu Haiying,Zhou Xingguo,et al.Fast transform ultrasonic pulse TIG welding[J].Transactions of the China Welding Institution,2009,30(7):57-60.
[9]王建军,林涛.电弧超声激励共熔池双钨极氩弧焊接方法[J].上海交通大学学报,2011,45(1):15-18.Wang Jianjun,Lin Tao.Twin-arc TIG welding with ultrasonic ex-citation[J].Journal of Shanghai Jiaotong University,2011,45(1):15-18.
[10]Morisada Y,Fujii H,Inagaki F,et al.Development of high frequency tungsten inert gas welding method[J].Materials&Design,2013,44:12-16.