| 1. | Backing weld before making main wel back weld
打底焊道 |
| 2. | 14 npt lead pressure transition joint and back welding lead - pressure tube code c12
A2 . - 14npt引压过渡接头及后部焊接引压管代码“ c12 ” |
| 3. | 1 2 - 14npt lead pressure transition joint and back welded lead pressure tube stainless steel
1 2 - 14npt引压过渡头及后部焊接引压管不锈钢 |
| 4. | 1 2 - 14npt lead pressure transition joint and back welded lead pressure pipe stainless steel
1 2 - 14npt引压过渡头及后部焊接引压管不锈钢 |
| 5. | A2 . 14 npt lead pressure transition joint and back welding lead - pressure tube code c12
A2 . - 14npt引压过渡接头及后部焊接引压管代码“ c12 ” |
| 6. | Joint of t shape : positive tread of m201 . 5 and back welded lead - pressure tube stainless steel
“丁”字形接头： m20x1 . 5阳螺纹及后部焊接引压管不锈钢 |
| 7. | When doing a grooving and hammer breaking experiment on a sample in the technology assess teal of fibrin root welding , find that fibrin backing weld will easily produce a special root incomplete fusion flaw
摘要在进行一次纤维素根焊的工艺评定试验的过程中，对取样进行刻槽锤断实验时，发现采用纤维素打底焊容易产生一种特殊的根部未熔合缺陷。 |
| 8. | A kind of stainless steel flux - cored wire has been successfully developed , based on acid slag type system , by adding a bit of oxides and trace of deoxidizer , adjusting the fluidity of melting slag to increase shielding of the back weld
在酸性渣系的基础上，通过添加少量氧化物，调整熔渣的流动性，并加入微量的强脱氧剂，以增强背面焊缝的保护，研制成功一种背面不充氩的不锈钢打底单面焊双面成形专用药芯焊丝。 |
| 9. | Abstract : after anticorrosion metal - power spray welding was carried out for prevention of corrosion , the matched anticorrosion electrode is used to make backing weld . the new process can replace the traditional process wi th internal repaired mouth
文摘:管道焊前对管端进行耐蚀金属粉末喷焊防腐，然后采用与之匹配的耐蚀焊条打底焊，从而取代焊后焊接区内补口防腐的传统施工工艺，达到了管道焊后可不再进行内补口防腐。 |
| 10. | Backing weld procedure technique of all - position narrow gap and thick - walled pipe welding is developed about all - position single - pass welding section analysis , wire feeding behavior , weld arc length , welding current analysis , procedure and joint test . the achievement has general guide meaning to producing and testing all - position welder
从单焊道全位置区段、送丝行为、焊接弧长(电压) 、电流行为分析、工艺试验和接头检验等几方面介绍管道全位置打底焊工艺特点，其研究成果对全位置焊接机的制造和调试具有普遍指导意义。 |
