| 喷瓷管道焊接接头的自熔覆防护 |
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| 引用本文： | 陈玉华,王勇,韩涛,董立先.喷瓷管道焊接接头的自熔覆防护[J].焊接学报,2005,26(2):49-51,55. |
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| 作者姓名： | 陈玉华 王勇 韩涛 董立先 |
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| 作者单位： | 石油大学,机电学院,山东,东营,257061 |
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| 基金项目： | 高等学校骨干教师资助计划项目(K000307A) |
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| 摘 要： | 通过分析焊接对喷瓷管道焊接接头处瓷层的影响，提出了用自熔覆法对焊接接头进行防护。试验结果表明，在合适的电流下采用TIG焊打底能够使焊口附近的瓷层重熔并向焊缝流布、熔覆，在焊缝区形成保护层，起到自熔覆防护作用；焊前管端预涂釉浆能有效增加焊后接头区自熔覆瓷层的厚度，提高瓷层的防护效果；焊后采用火焰加热对接头区进行重熔处理，可以消除瓷层中气泡、裂纹等缺陷。采用焊前管端预涂釉浆、TIG焊打底、焊条电弧焊填充、焊后接头区瓷层重熔处理等配套措施能够有效解决喷瓷管道焊接接头的防护问题，焊后不用进行内补口。
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| 关 键 词： | 防腐 喷瓷管道 焊接 接头防护 自熔覆性能 |
| 文章编号： | 0253-360X(2005)02-49-04 |
| 收稿时间： | 2004/3/29 0:00:00 |
Protection of welded joints of sprayed porcelain pipe by self-deposition of enamel coating |
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| CHEN Yu-hu,WANG Yong,HAN Tao and DONG Li-xian.Protection of welded joints of sprayed porcelain pipe by self-deposition of enamel coating[J].Transactions of The China Welding Institution,2005,26(2):49-51,55. |
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| Authors: | CHEN Yu-hu WANG Yong HAN Tao and DONG Li-xian |
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| Affiliation: | Department of Materials Science and Engineering, College of Mechanical and Electronic Engineering, University of Petroleum, Dongying 257061, Shandong, China,Department of Materials Science and Engineering, College of Mechanical and Electronic Engineering, University of Petroleum, Dongying 257061, Shandong, China,Department of Materials Science and Engineering, College of Mechanical and Electronic Engineering, University of Petroleum, Dongying 257061, Shandong, China and Department of Materials Science and Engineering, College of Mechanical and Electronic Engineering, University of Petroleum, Dongying 257061, Shandong, China |
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| Abstract: | The effect of welding on the enamel of the welded joint of porcelain pipe was studied and a new method of self-deposition protection method was put forward to protect the welded joints of porcelain pipe. The results show that the enamel near the weld can remelt and flow to the weld and cover the weld metal when tungsten inert-gas (TIG) welding is used to backing weld with proper the current. Pre-brushing the enamel near the end of pipe before welding can add the thickness of the self-deposition enamel and improve the protection effect. Using flame to remelt the enamel on the welded joints after welding and cooling slowly can re-intenerate the enamel and remove the cracks and air bubbles in the enamel. Using the methods of brushing enamel before welding, backing welding by TIG, filling by shield metal arc welding and remelting enamel on the welded joints by flame can effectively protect the welded joints of porcelain pipe without internal repairing after welding |
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| Keywords: | corrosion resistance sprayed porcelain pipe welding protection of welded joints self-deposition property |
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