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氢在灰铁铸件焊补开裂中的行为研究

Study on the Behavior of Hydrogen in the Crack Tendency of Gray Iron Casting
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摘要  采用排液测氢法和插销试验法较系统地研究了氢对钢芯石墨化铸铁焊条施焊的灰口铸铁焊接接头冷裂倾向的作用;将试验结果与高强钢综合比较,得出灰口铸铁对氢致裂纹不甚敏感的结论.在微观上应用显微镜下录像测氢试验法观测焊接接头中氢的动态行为,明确了氢的微观扩散行为及逸出过程.对此问题的研究不仅对工程实践具有较高的指导意义,更为进一步探讨灰口铸铁焊接接头裂纹产生原因提供了实验与理论依据. The effect of hydrogen on the cold crack tendency gray iron joint welded with Z208 electrode is systematically studied by means of measuring diffusible hydrogen with compelling liquid method and implant test in this paper. The result shows that gray cast iron is not more sensitive to the hydrogen-induced crack than high-tensile steel. The dynamic behavior of hydrogen in this joint is observed by photographing under the microscope, the diffusion behavior and the escaping course of hydrogen is definited. This study leads to engineering practice greatly and provides the testing and theoretical basis to further studies on the cause of the gray cast iron welded joint crack,It has great academic value.
出处 《中原工学院学报》 CAS 2003年第4期35-38,共4页 Journal of Zhongyuan University of Technology
关键词 灰口铸铁 铸铁焊接 扩散氢 氢致裂纹 临界应力 冷裂纹 插销试验法 排液测氢法 diffusion hydrogen hydrogen-induced crack critical stress flack graphite
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参考文献3

  • 1杜则裕,张智,张文钺,秦伯雄.合金钢焊接区扩散氢的动态分布[J].中国机械工程,1994,5(1):10-13. 被引量:9
  • 2信英华.用插销试验法研究氢对灰口铸铁焊接接头裂纹的影响[J].吉林工业大学学报,1985,3(1):3-7.
  • 3吴世初.金属的可焊性试验[M].上海科学技术出版社,1982..

二级参考文献1

  • 1[瑞典]希拉特(M·Hillert) 著,赖和怡,刘国勋.合金扩散和热力学[M]冶金工业出版社,1984.

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