焊接接头

The results indicate that the welding temperature is the most important factor for diffusion welding of composite. When the welding temperature range is between solidus and liquidus, the peak joint strength can reach 170 MPa.

指出焊接温度是复合材料扩散焊接最重要的工艺参数，焊接温度介于基体合金固相线与液相线之间，接头强度最高值可达到170 MPa；接合界面的氧化膜阻碍基体原子的扩散，是复合材料接头强度下降的原因之一。

The ladder-shaped public connection of thrash pipe union is welded with exit port of wessel or paste pot,or the ladder-shaped public connection is weldde with steel tube port with relevant diameter.

安装1、锤击由壬的梯形公接头与容器或泥浆出口孔相焊接，或将梯形公接头焊接于相应直径的钢管端口上。

It was found that the mechanical properties of the joints decreased by the alclad and it will be increased dramatically by removing the alclad. The effect of alclad on the bottom surface is larger than on the top surface. The mechanical properties of 2024-T3 joints will fall down because alclad is entrapped into the welded joints by the rotating and stirring tools during the friction stir welding, similar with "inclusion" in fusion welding.

研究结果表明，包铝层的存在明显降低了2024-T3铝合金搅拌摩擦焊接头的力学性能；去掉包铝层后接头的性能显著提高；下表面包铝层对接头性能的影响大于上表面包铝层；当2024-T3铝合金表面带有包铝层进行搅拌摩擦焊接时，在搅拌头的旋转和搅拌作用下，包铝层被卷入焊缝中，形成类似于熔焊的&夹杂&，从而使得接头的力学性能下降。

If a joint is in the cable, the temperature of the tinning welding joint is mot more than 120℃,compressing joint mot more than 150℃ and electro-welding or gas-welding joint not more than 250℃.

2.2.2 短路时（最长持续时间不超过5秒），导体最高温度不超过250℃，电缆线路中间有接头时，锡焊接头不超过120℃，压接接头不超过150℃，电焊或气焊接头不超过250℃。

The influence of different post weld heat treatment conditions on the microstructures and mechanical properties of friction welded joints between drill pipe DZ60 steel and its tie-in 40Cr steel has been discussed.

摘 要：首次采用摩擦焊接工艺对地质勘探用钻杆的管体与接头进行了焊接试验，探讨了不同的热处理工艺条件对DZ60钢钻杆管体与40Cr钢接头摩擦焊接头组织与性能的影响，并与采用热墩粗工艺生产的钻杆管体组织与性能进行了对比。

Arc cutting;Arc welding;Arc welding cables;Arc-welding equipment;Blowpipes;Connectored joints;Construction requirements;Definition;Definitions;Degrees of protection;Dimensioning;Electric contact protection;Electrical engineering;Electrical safety;Environmental condition;Equipment;Feed;Feeder units;Feeding devices;Filler wire;MAG welding;Manual arc welding;Marking;MIG welding;Operating instructions;Performance requirements;Plasma arc cutting;Plasma-arc welding;Protection against electric shocks;Protective measures;Safety;Safety devices;Safety requirements;Specification;Temperature range;Test conditions;Testing;Testing conditions;Welding;Welding engineering;Welding equipment;Welding power supply;Wire guiding;Wires

中文标题电弧焊设备。第5部分：焊丝进料装置中文主题词弧切割；弧焊；电弧焊接电揽；电弧焊接设备；下流管；接头；施工要求；定义；保护程度；标注；电气接触保护；电气工程；电气保护；环境条件；设备；进料；进料单元；进料设备；填丝；MAG 焊接；手工电弧焊；做标记；MIG 焊接；操作说明；性能要求；等离子弧切割；等离子弧焊接；电击防护；保护措施；安全；安全仪；安全要求；规范；温度范围；试验条件；试验；焊接；焊接工程；焊接设备；焊接电源；线材指示；线

The results show that the spreading area of series Ni-P filler metal increases with the increase of brazing temperature, and the spreading areas of Ni-P filler metal is larger than that of Ni-Cr-P filler metal; the shear strength of the brazed joint at room temperature increases with the increase of temperature from 925℃ to 1000℃, and the shear strength of the stainless steel joint brazed with Ni-P filler metal is superior to that with Ni-Cr-P filler metal by 30~40 MPa in the same brazing technology.

结果表明，Ni-P系钎料铺展面积随钎焊温度的升高而增大，并且相同温度下不含Cr的Ni-P钎料铺展面积大于Ni-Cr-P的铺展面积；钎焊温度从925 ℃升高到1000 ℃过程中，Ni-P、Ni-Cr-P钎料钎焊不锈钢接头的室温剪切强度均增大，并且在相同钎焊工艺下，不含Cr的Ni-P钎料钎焊不锈钢接头室温剪切强度优于Ni-Cr-P钎焊接头强度30~40 MPa；Ni-P系钎料钎焊接头高温强度随温度升高而下降，测试温度超过500 ℃时，相同温度下含Cr的钎料能够提高钎焊接头强度0~30 MPa。

China Water Conservancy and Hydropower 3rd Engineering BureauLanzhouGansu730010The intake tower is located in the traffic bridge on the left bank power station Gongboxia imports spillway tunnel, bridges with a rib plate for the T-beam, long 20m, bridge steel welded joints has become one of the difficulties of the installation: space narrow, steel-intensive, welding operation difficulties.

进水塔交通桥位于公伯峡电站左岸泄洪洞进口，桥梁为带有肋板的T型梁，长20m，桥梁钢筋接头的焊接成为安装的难点之一进水塔交通桥位于公伯峡电站左岸泄洪洞进口，桥梁为带有肋板的T型梁，长20m，桥梁钢筋接头的焊接成为安装的难点之一：空间狭窄、钢筋密集、焊接操作困难。

China Water Conservancy and Hydropower 3rd Engineering BureauLanzhouGansu730010The intake tower is located in the traffic bridge on the left bank power station Gongboxia imports spillway tunnel, bridges with a rib plate for the T-beam, long 20m, bridge steel welded joints has become one of the difficulties of the installation: space narrow, steel-intensive, welding operation difficulties.

进水塔交通桥位于公伯峡电站左岸泄洪洞进口，桥梁为带有肋板的T型梁，长20m，桥梁钢筋接头的焊接成为安装的难点之一期刊文章分类查询，尽在期刊图书馆进水塔交通桥位于公伯峡电站左岸泄洪洞进口，桥梁为带有肋板的T型梁，长20m，桥梁钢筋接头的焊接成为安装的难点之一：空间狭窄、钢筋密集、焊接操作困难。

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。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。