焊接的

We try to find the right welding material, and welding technics for carbon dioxide gas protecting welding and SMAW, we also research on welding deformation, structure and mechanical property of the joint, and sensitivity for lamella tearing of the base metal.

研究二氧化碳气体保护焊和焊条电弧焊这两种不同焊接方法的焊接工艺和焊接变形，焊接接头的组织及力学性能，母材的层状撕裂敏感性等。

The result of welding test show that we can acquire all wool and a yard wide welding joint between the pickax boot wearable materials (2C) and pickax body materials through selecting fit welding material and drawing up the reasonable welding craft.

焊接试验结果表明，通过选择合适的焊接材料以及制定合理的焊接工艺，能够获得所选镐靴耐磨性能最好的2C试样与镐体材料优质的焊接接头。

Through the failure analysis of tamping pick and abrasion contrast test, we select the fit pickax shoe wearable material; through the welding and performance test, we set about from selecting welding rod and establishing welded craft with reason to judge whether the welding between the pickax shoe wearable material which we have selected and the pickax body material or not?

通过对捣镐的失效分析和磨损对比试验，选择合适的镐靴耐磨材料；通过焊接及焊后的性能试验，从合理选择焊接材料和制定焊接工艺着手，判断所选镐靴耐磨材料与镐体材料之间的焊接是否可行？

Apply the metalloscope, the scanning electric mirrorand energy spectrum analysis instrument etc. material analysis way and MLD-10 dynamic load abrasion tester, JB-36 three use the impact tester etc. test equipment to analysis and test the wearable performance of selected material and welding quality of welding sample. So as to make certain the best welding material and welding crafts between the welding of pickax boot wearable material and pickax body material in making tamping pick adopting parted type structure.

应用金相显微镜、扫描电镜、能谱仪等材料分析手段以及MLD-10动载磨料磨损试验机、JB-36型三用冲击试验机等试验设备，对所选材料的耐磨性能和焊接试件的焊接质量进行分析测试，以确定分体式结构制造捣镐的工艺中最佳镐靴耐磨材料及其与镐体材料捍接过程中的最佳焊接材料和焊接工艺。

Based on the developed variable polarity TIG welding power supply ,it establishes variable polarity TIG welding arc multi-information measuring and processing system by adopting memory oscilloscope,high speed video-recorder?spectrograph?welding arc dynamic analyzer and computer.

以研制的变极性TIG 焊接电源为实验平台，采用记忆示波器、高速摄像仪、光谱分析仪、焊接电弧动态分析仪，建立起变极性TIG焊接电弧多信息测试分析系统，同时采集焊接电流、电弧电压、电弧形态和电弧光谱等重要信息，并基于VisualC++语言开发的软件系统对采集的各种信息进行融合及分析。

In order to improve the welding quality between this two kinds of materials,we explore experimentally the characteristics and mechanical properties of the friction welded joints of LF6 anti-rust aluminum and HR-2 anti-hydrogen stainless steel.Magne- sium in LF6 aluminum alloy is easy to form the brittleness intermetallic compounds on the fr...

经焊前对焊接界面的特殊处理，清除了LF6与HR - 2待焊接表面上的氧化膜，并采用以纯铝为介质的三元摩擦焊接工艺方法，避免或减少焊接界面上金属间化合物的生成，所焊接制品的抗拉强度可以达到或超过LF6防锈铝母材所要求的供货状态σb≥ 2 70MPa的技术要求。

Finally, the bonding locations of the slave circuit and the bonding program of the slave bonder are corrected so that connecting bonds can be attached onto the recomputed correct bond locations.

第四步，从电路的焊接位置和从焊接机的焊接程序被校正从而使相连焊件能被加到重新计算的正确焊接位置。

In order to understanding the punching and pressing performance of Q450NQR1 high strength anti-corrosion steel and satisfying the requirement of C76 special coal wagon in the stage of technical preparation, and to establish the right punching and press process based on existing machinery.

其二通过焊接工艺试验，选取了与之匹配的焊接材料，确定了合适的焊接工艺参数，成功地焊接了使用该钢材的C76 型专用运煤敞车车体钢结构。

The test results show that the crispest HAZ occurs in the process of welding of the 14MnNbq steel on the first heat circulation submerged welding overheat zone and the second heat circulation submerged welding overheat zone plus the not entirely re crystallized zone. The 14MnNbq steel has a tendency of being crisper due to overheat than the SM490C steel is. In order to ensure the toughness of the welding HAZ′s, the welding wire capacity should be properly controlled during welding.

由试验结果表明，14MnNbq钢焊接HAZ最脆区出现在一次热循环的埋弧焊过热区及二次热循环的埋弧焊过热区+不完全重结晶区；14MnNbq钢比SM490C钢有更强的过热脆化倾向，为确保焊接热影响区韧性，焊接时应适当控制焊接线能量。

This type of cable tray is made of 4mm-6mm diameter high quality steel wire and is weld by special welding machine crossing and also welding in T type on side and on top, so that each welding point can bear 500 kg tension. T type welding formed safe T edge is the global patent of mesh type cable tray, which avoids the sharp surface of welding point and can not only protect cables but also protect workers.

桥架采用直径4mm-6mm的高品质钢丝根据力学原理进行优化配置混合，并采用特殊订制的焊接机进行横纵交叉焊接及其侧弦和顶弦的T型焊接，以达到每个焊点能承受500公斤的张力。T型焊接所形成的安全T型边沿是网格式桥架的全球专利，避免了焊接点的尖锐端面，不仅能保护线缆，对施工及安装人员也更安全。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。