| 高压加热器管板不锈钢堆焊层与碳钢管子封口焊工艺 |
| |
| 引用本文： | 陈小明,潘乾刚.高压加热器管板不锈钢堆焊层与碳钢管子封口焊工艺[J].机械制造文摘:焊接分册,2011(6):6-9. |
| |
| 作者姓名： | 陈小明 潘乾刚 |
| |
| 作者单位： | 东方电气集团东方锅炉股份有限公司,四川自贡643001 |
| |
| 基金项目： | 管壳式换热器管板不锈钢复合层与碳钢管子的封口焊方法（专利号：ZL200910058221.3） |
| |
| 摘 要： | 在低合金钢管板上堆焊奥氏体不锈钢与碳钢管子SA556MC2＋16mm×2．12mm进行管子管板封口焊试验时，采用手丁氩弧焊ER309、ERNiCr．3等焊丝，在其焊缝根部产生微裂纹，并对产生的裂纹进行了分析。采用新工艺在管子管端先堆焊隔离层，采用内缩式坡口再进行封口焊解决了焊缝裂纹，2009年1月新T艺申请为发明专利并成功运用到出口的600MW超临界高压加热器。
|
| 关 键 词： | 奥氏体不锈钢堆焊层 碳钢管子 封口焊 裂纹 发明专利 |
Seal welding process of stainless steel depositing layer and carbon steel pipe in supercritical high pressure heater |
| |
| Authors: | Chen Xiaoming Pan Qiangang |
| |
| Affiliation: | (Dongfang Boiler Group Co. , Ltd. , Zigong 643001, China) |
| |
| Abstract: | Micro-crack was shown at the root area of the weld while seal welding test of the carbon steel pipes （SA556MC2 016 mm× 2.12 ram） to low-alloy steel tube plates which have austenitic stainless steel cladding by manual TIG process with wires of ER309 and ERNiCr-3. Moreover, the formed micro-crack was analyzed. The welding crack can be solved by way of the new process, which involves bead welding an isolated layer at the end of the carbon tubes and seal welding using internal groove. The new procedure was awarded an invention patent on Jan. 2009 and was successfully used in the manufacture of high-pressure heater of 600 MW supercritical unit for export. |
| |
| Keywords: | austenitic stainless steel cladding carbon steel pipes seal welding crack： invention patent |
| 本文献已被 维普 等数据库收录！ |
