查询词典 welding

Gray castiron works may be repaired by arc welding with electrodes of 08 or ordinary iron wire covered with special coating which contains ferro-aluminium and other graphilizers. During welding process, it is found that these electrodes produce a weld of gray cast iron structure.

灰鋳铁铸件可以用08焊丝或普通鉄丝复以含有铝铁及其他石墨化剂的特种药皮的焊条电弧焊补，在焊接过程中，这种焊条形成灰铸铁组織的焊縫。

The results show that reversible deformation values and welding sequence make a great effect on the welding deformations.

结果表明反变形量和焊接顺序对焊接变形的影响程度较大。

The result shows that, when a free droplet transfer mode is applied in high-speed welding , the workpiece is heated by the arc throughout the process and thus the molten pool can not solidify in time.As a result, the molten pool is very long, which gives way to the instability of bead formareron and pinch effect of the liquid metal,so that it finally leads to the humping phenomenon. Based on the analysis and experimental result, the short-circuiting transfer mode is suggested to improve the bead formation in high-speed welding .

理论分析和试验结果均表明，采用自由过渡的熔滴过渡形式进行焊接，工件始终处于焊接电弧的加热下，在高速焊接时，熔池不能及时冷却，熔池明显拉长，由扰动引起的振动波长大，当熔池的拉长达到一定程度时，会发生液体金属的失稳和颈缩的现象，造成驼峰焊道。

Three kinds of welding speed(0.6, 1.5 and 2.4 m/min) were used to joint the heatresistant aluminum alloy AA8009 plate with 1 mm in thickness by CO2 laser welding.

摘 要：采用3种不同的焊接速度(0.6， 1.5和2.4 m/min)，对板厚为1 mm的耐热铝合金AA8009进行CO2激光焊接。

Welding to materials like aluminum, copper, white metal, and brass that have low melting temperatures and are easily oxidized, can be facilitated by flushing the welding spot with nitrogen, argon, helium, carbon dioxide or some similar protective gas.

焊接那些像铝、铜、白合金、黄铜这些熔点很低、易于氧化的材料，使用氮气、氩气、氦气、二氧化碳或一些类似的保护气体，吹洗焊接焊点。

In accordance with size of processing die, choose the right horn and steel needle, welding steel needle into the horn by silver welding rod firmly.

使用： 根据所需加工模具的大小，选择合适的变幅杆和钢针，将钢针用银焊条牢固地焊接在变幅杆上。

The results show that the plasticity zone and dynamically quiescent layer become fine equiaxed recrystallisation under the thermo-mechanical effect, the grains in the heat-affected zone grow up because of the effect of friction heat. When the rotation speed is 2 500 r/min and the welding time is 12 s, good joint is achieved, and the tensile shear strength of the joint reaches 9.24 kN. The tensile shear strength of spot increases with increasing tool rotation speed, with increasing welding time, the strength increases first, while then reduces. The microhardness of plasticity zone is high, but is slightly lower than that of the base metal, the minimum value of microhardness is in the heat affected zone. When the energy input of joint is high, the fracture type of spot is mode Ⅰ, and the tensile shear strength is high; on the contrary, when the energy input of joint is less the fracture type of spot is mode Ⅱ, and the strength is low.

结果表明：塑性区和动态静止层的晶粒在热和力作用下发生动态再结晶形成细小的等轴晶，热影响区的晶粒在摩擦热作用下长大变粗；搅拌头旋转速度为2 500 r/min，焊接时间为12 s时，可以获得力学性能较好的焊点，焊点的剪切强度达到9.24 kN；焊点的剪切强度随搅拌头旋转速度的增大而增大，随焊接时间的延长先增大后减小；塑性区的显微硬度较高，但略小于母材，接头显微硬度的最小值分布在热影响区；焊点热输入量较多时，接头为Ⅰ型断裂，焊点的剪切强度较高；焊点热输入量较少时，接头为Ⅱ型断裂，焊点的强度较低。

We offer our customers a wide range of friction welding technologies and machine capacities, sub-contract welding services, refurbishments, upgrades, and machine maintenance packages.

我们为客户提供广泛的摩擦焊接技术，设备，来料加工服务，翻新，系统升级和维护服务。

The test of the pipeline welding robot shows that the algorithm can improve the tracking accuracy of automatic welding.

管道焊接机器人的工艺试验表明：该算法可有效提高基于激光跟踪的管道焊接机器人跟踪精度。

For the reasons, Ukraine Paton Welding Institute puts forward the method of A-TIG welding.

针对TIG焊的不足，乌克兰的Paton焊接研究所首先提出了A-TIG焊方法。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷