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- STT theory and it's good qualities are anylized and a novel control method for all-position backing weld is brought forward. 分析了 STT理论及其优点 ,提出了一种新颖的全位置打底焊控制思路。
- Flux-cored wire is applied to the austenitic stainless steel pipe by back weld,MAG for the filling and cosmetic weld,at horizontal fixed round welding vertically up. 采用药芯焊丝对奥氏体不锈钢管道进行打底焊接,MAG焊填充及盖面焊,立向上的水平固定全位置焊接。
- A method of automatic pipeline backing welding is studied by using of new type of independent R&D all-position pipeline welding robot and CMT welding power source. 摘要采用自主研发的新型管道全位置焊接机器人，结合CMT焊接电源，研究了一种焊接机器人管道全自动打底焊方法。
- 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。
- As welding is conducted for the mediumcarbon alloy steels using austenitic electrodes, two kinds of cracks,hot crack and fusion zone crack,can be found in backing weld of dissimiar metal weld. 采用奥氏体焊条焊接中碳合金钢时,发现了两种形态的裂纹:底层焊道中的热裂纹和熔合区裂纹。
- This article introduces the welding technology of PW T automatic backing welding and RMS automatic filling welding technology,especi ally for choosing welding materials,caculating the welding parameters and contr olling the welding quailty. 介绍了PWT外焊自动根焊和RWS自动焊填盖技术,重点讲述了自动焊技术中焊接材料的选用、焊接工艺参数的计算和焊接质量的控制。
- The results of arc starting and welding tests for titanium alloy are also presented in detail in the paper. Tensile strength of welding joints has reached the demands of welding standard, esp. no spatters on back weld are obtained in contrast with EBW. 文中详述了空心阴极焊枪设计、引弧试验情况及钛合金焊接工艺试验 ,结果表明焊接接头拉伸强度达到标准的要求 ,特别是与电子束焊相比 ,焊缝背面无焊接飞溅
- 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。
- TIG BACKING WELDING PROCEDURE OF THICK-WALLED PIPE 厚壁管TIG打底焊工艺分析
- Backing weld and filling weld by PWT-CWS.02NRT(2) PWT-CWS.;02NRT打底与RMS填盖焊接技术(二)
- Rose bushes shoot again after being cut back. 玫瑰丛修剪後还能再长出新枝。
- APPLICATION OF CERAMIC BACKING WELDING IN HIGHWAY STEEL BRIDGE 陶质衬垫焊在公路钢桥上的应用
- He trudge three hour in the snow to get back home. 他在雪中跋涉三个钟点才回到家。
- The crowd fell back to let the players through. 人群后退让运动员们通过。
- Do exercise every day and you'll be back in condition. 每天锻炼锻炼，你很快会恢复健康的。
- The ship beat back against a monsoon. 船逆着季风艰难地行驶。
- The new leader has a large backing. 那位新领导人有大批的支持者。
- Progress in backing weld technology for stainless steel tubes 不锈钢管打底焊接工艺的进展
- I flap the flies away but soon they fly back. 我把苍蝇赶走，但一会儿又飞回来了。
- I never lend books; you never get them back. 我的书决不外借，因为总是有去无回。
