H90与D6AC钢感应熔敷焊工艺试验研究

摘要报告了铜钢异种材料焊接的研究现状，并得出了铜和钢的焊接可以由多种方法进行焊接的结论。对D6AC钢和H90黄铜的高频感应熔敷焊进行了研究，研究方式为采用感应加热设备对材料进行焊接。焊接过程中的合理参数为频率35KHz，直流电流400A，交流电压395V，交流电流90A，直流电压150V，焊接时间为4分钟。得到成形良好表面平整的界面，且钢基体未发生熔化，冶金结合效果良好。22118
对试验得到的工件进行了剪切强度试验和硬度试验，试验结果表明：铜钢感应熔敷焊接合处的剪切强度为182.66Mpa，界面强度达到要求。而感应熔敷焊后铜的布氏硬度为HB60-70，硬化后铜的布氏硬度为HB90-100，硬度未下降，满足要求。并对焊件的金相试样进行了金相组织试验研究，对金相图片分析可知焊缝无裂纹、夹渣、气孔、未熔合等明显缺陷，焊缝优良，焊接质量良好。
关键词 H90黄铜 D6AC钢感应加热熔敷焊工艺剪切强度硬度显微组织
毕业论文设计说明书（论文）外文摘要
Title   The Technology Test of The Induced Deposition Welding of H90 and D6AC Steel
Abstract
The research status of the welding of copper and steel dissimilar materials was reported, and the conclusion of the welding of copper and steel can be carried out by a variety of methods was drawn. The high frequency induction weld welding of D6AC steel and H90 brass was studied in this paper, induction heating equipment was used for welding these materials. The reasonable parameters in welding process are frequency 35KHz, DC current 400A, AC voltage 395V, AC current 90A, DC voltage 150V,and the welding time was 4 minutes. Forming a flat surface to get a good interface, and the melting of steel substrate does not occur, metallurgical combination is good.
The shear strength test and hardness test was carried out,the results showed that: The shear strength of the junction is at 182.66Mpa, the strength of the interface meet the requirements. And after induction deposited welding the Brinell hardness of copper is HB60-70,and after hardened the Brinell hardness of copper is HB90-100, hardness does not fall ,and it meet the requirements. Finally, the metallurgical test was carried out to get a microstructure analysis ,and to analyze microstructure image the result shows there are no cracks, slag, porosity, lack of fusion and other obvious defects in weld, the welding quality is good.
Keywords H90 brass D6AC steel Induction heating Deposition welding crafts Shear strength Hardness Microstructure
目   次
1 绪论    1
1．1 选题背景及意义    1
1．2 异种材料焊接方法和问题    1
1．3 铜钢焊接研究现状    2
1.3.1铜钢焊接的特点    2
1.3.2铜钢焊接的主要问题及原因    3
1.3.3铜钢焊接的焊接方法    3
1．4 铜-钢熔敷焊    5
1.4.1熔敷焊原理    5
1.4.2熔敷焊方法    5
1.4.3铜钢感应熔敷焊接的特点    6
1.4.4铜钢感应熔敷焊发展现状    6
1．5 本课题研究任务    7
2 试验材料和设备    8
2．1 试验材料    8
2．2 试验设备    9
2.2.1 高频感应电源    9
2.2.2 力学性能设备    10
2.2.3 金相显微镜    13
3 感应焊接试验过程及结果    14
3．1 焊前准备工作    14
3．2 焊接参数设定    14 H90与D6AC钢感应熔敷焊工艺试验研究:http://www.751com.cn/cailiao/lunwen_14614.html