共查询到18条相似文献,搜索用时 109 毫秒
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不锈钢复合钢板是一种由基层碳钢板和复层不锈钢板复合而成的双层金属板材。文章以Q345R+304L(奥氏体不锈钢复合钢板)为例,对不锈钢复合钢板的焊接特点进行了理论分析,重点对不锈钢复合钢板焊接工艺设计进行了介绍,对焊接材料的选择、焊接接头坡口的设计、焊接方法和焊接参数选定、过渡层焊接要点以及焊接中应注意的事项进行了详细的阐述。并通过焊接工艺评定机械性能试验以验证焊接设计的结果。 相似文献
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文章对Q245R(R-HIC)钢板进行了焊接性分析,通过选用相匹配的焊接材料,制定合理的焊接工艺,使得焊接工艺评定试板焊接接头各项试验结果良好,从而验证了焊接工艺的可靠性,并成功地应用于生产。 相似文献
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研究了双向载荷作用下对焊接头表面裂纹的疲劳扩展规律。采用经精确标定应力强度因子幅值的双向十字形试样,在电液伺服双轴向疲劳试验机上对母材分别为16MnR 和 Q235-B 这两种钢的对焊试板进行了疲劳裂纹扩展试验。同时,将其结果分别与单向应力下对焊接头及母材的疲劳扩展速率进行了比较,为制定我国在役压力容器缺陷评定规范提供了参考数据。 相似文献
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承接了某公司PVC装置上的5台气体密封罐制造.其中罐顶材料为06Cr19Ni10,罐体加强箍为Q235B,两者相焊.第一台气体密封罐在焊接时出现了裂纹.后来调整了焊接工艺,顺利完成了其余4台设备的焊接,质量完全符合要求. 相似文献
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对Q345R与321不锈钢复合钢板的成分及其焊接性进行了分析,对其焊接工艺进行了研究,取得了良好的实际应用成果。 相似文献
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Q. An K. Y. Fan Y. F. Ge Y. C. Liu S. Wang 《Journal of Adhesion Science and Technology》2020,34(6):670-685
AbstractThis paper investigated the microstructure and mechanical properties of Q235/304 stainless steel clad plate welding seam produced by hybrid welding of tungsten inert gas welding (TIG) and metal active gas arc welding (MAG). The results showed that the dual phases containing ferrite and austenite appeared in the stainless steel covering welding (SSCW), while the partial martensite phases appeared in the carbon steel backing welding (CSBW), which is attributed to the dilution behavior of Ni and Cr elements from stainless steel to the Q235 steel results into the movement of the CCT curve to the right side and the decrease of critical martensite formation cooling rate. The CSBW possesses the highest microhardness value in the weld metal due to the existence of the martensite zone. The impact tests were carried out and the results showed that the Charpy absorbed energy of weldments (81?J) is almost equal to that of base clad plate (83?J). The SSCW layer possesses the ductile fracture characteristics accompanying many dimples. However, in the CSBW layer, some cleavage fracture characteristics are presented in the radiation zone while many dimples are located in the fibrous zone, revealing a complex combination of brittle and ductile fracture behavior, which is due to the existence of martensite zone, different stress states and crack propagation velocity.
- Highlights
Hybrid (TIG, MAG) welding is suitable for welding stainless steel clad plate;
The martensite formation in CSBW is related to dilution and diffusion of Cr and Ni;
Partial martensite transformation can strengthen and toughen the welding seam.
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对不锈钢复合钢板(以Q345R+316L为例)的焊接特点进行了理论分析,重点对过渡层的焊接性进行了研究。主要包括:应用舍夫勒组织图分析过渡层的焊缝组织和确定过渡层焊接材料;焊缝熔合比的控制是过渡层焊接接头的关键;过渡层马氏体组织的形成和焊接接头热应力的存在对焊缝性能的影响。 相似文献
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Bei‐bei Liu Zheng‐xiang Huang Xu‐dong Zu Qiang‐qiang Xiao Xin Jia 《Propellants, Explosives, Pyrotechnics》2015,40(1):127-132
Spaced armor has a simple structure and is easily produced with low cost. Previous authors calculated how a jet penetrates spaced armor; but, this study provides both a theoretical calculation method describing the interaction of a jet with spaced armor and experimental data which agree well with the theoretical values. The effects of several factors were explored using LS‐DYNA such as the distance between the first plate and the second plate as well as layer thickness on the interaction between the jet and the target. A method for simulating the protection afforded by spaced armor and supporting the design of spaced armor is presented. 相似文献
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研究了Q235钢在经表面渗氮化钛处理后,其在10%的硫酸与富液中的耐蚀性能。对其腐蚀前后的宏观形貌进行对比,对渗后试样进行电化学腐蚀性能实验,对渗层的显微特征、结构形貌等进行了检测分析。结果表明,Q235钢在10%H2SO4中腐蚀速度是氮化钛渗层的78931倍,在富液中则是6768倍,说明在腐蚀液中,氮化钛渗层耐蚀性是相当好的,可以大大延长Q253钢在腐蚀介质中的使用寿命。 相似文献
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针对Q235-A钢板在被废止作为受压元件材料使用之后,如何应对承压设备设计中的各种不同元件合理选材,提出建议。 相似文献
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以固体电解质涂层为导电层,石墨导电涂料为阳极涂层,石墨为参比电极,进行原油储罐底板外侧的气相阴极保护。通过实验确定了固体电解质、导电涂料的配方,测定了Q235钢在涂层中的自腐蚀电位、最小保护电位和最小保护电流密度等电化学参数。 相似文献
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复合不锈钢以其良好的使用性和经济性被广泛应用于炼油和石化装置防腐耐高温压力容器和管道中。分析了复合不锈钢板其中一种 0 0Cr1 8Ni5Mo3Si2 +Q2 35的焊接性能 ,进行了焊接工艺试验 ,制定了合理的焊接工艺措施 ,在实践中取得了良好的效果 相似文献