焊缝

It is found that the design of reinforce-beam section dog-bone connection can transfer the yielding joint from flange welds to parent metal zone, which possesses better plasticity and avoid yielding joints in weak welds. This design also enables beam flanges to dissipate earthquake energy more effectuality and protects weak welds.

在弹性、弹塑性有限元分析的基础上，对狗骨式节点和翼缘增强狗骨式节点进行了承载能力对比分析，结果表明：翼缘增强狗骨式节点设计可以将梁柱翼缘焊缝的塑性铰有效的转移到塑性好的母材区域，避免了在薄弱的焊根部位形成塑性铰，保护了韧性较差的焊缝。

With optimum magnetic intensity and frequency, the weld microstructure s were almost fine equiaxed grains and the weld shape was .

当磁感应强度和频率匹配合适时，焊缝成形良好，焊缝组织几乎为细小的等轴晶。

When the Al-Mg-Zr-Sc welding wire was used as filling material,the grains of welding seam were refined obviously,and the weld joint was greatly strengthened by forming of fine equiaxial grains layer in fusion zone .

但采用Al-Mg-Zr-Sc合金焊丝为填充材料时，焊缝晶粒组织明显细化，熔合区形成的细小等轴晶层提高了基材与焊缝填充材料的结合力，焊接接头的屈服强度比采用Al-Mg-Zr合金焊丝为填充材料时提高了100 MPa，显著提高了Al-Mg-Sc合金焊接构件的许用强度，因此焊接Al-Mg-Sc板材更宜采用Al-Mg-Sc-Zr焊丝。

It was founded that the hardness distribution is approximately symmetrical to the center of welding line , the weakest zone of the whole joint is about 10mm from the center of the welding line . The HAZ of the welding line has an intenerate zone. the center of the welding line presents a typical dendritic casting structure.

结果表明：焊接接头的硬度以焊缝中心线为对称轴呈近似对称分布，焊接接头的最薄弱环节位于距焊缝中心约10mm处，焊接接头的热影响区内存在一个软化区。

Which are from USA for testing the product's temperature;The inductors of anneal、temper are all used multiturn closed coil,the NDT equipment for inspecting weld joint are multicenter digital robotcized ultrasonic testing technology and magnetic particle equipments,and we use full closed、full automatic annoit machinery with environment protecting,and all our main equipments are controlled by computers,so that we can monitor technologic parameter real time.

公司引进美国MTI公司320BX型摩擦焊机，采用世界领先水平的惯性摩擦焊接方法进行焊接；焊缝热处理设备采用中频热处理，以及采用美国雷泰测温仪进行红外测温；退火、回火感应器采用多匝绕制封闭线圈；焊缝无损检测采用多通道数字自动化复合探伤以及磁粉探伤设备；钻杆表面涂油采用封闭、环保、全自动涂油机等等，保证了电脑监控关键设备、实时监测工艺参数，产品质量稳定可靠，深受客户的欢迎。

In CO2 gas metal arc welding, the difficulty hi seam tracking by pendular arc sensor is how to attain the tolerance signal of weld joint.

在CO_2气体保护焊中，采用摆动电弧传感器进行焊缝跟踪的困难在于如何提取准确的焊缝偏差信号。

Experiment result indicates that laser power density,welding speed,pulse frequency and pulse width are the key factors of pulse laser welding and that the polishment,close touch of butt joint faces have an important effect on the air vents number in welding line and the mechanical performance of welding line.

实验结果表明：对焊面的打磨、抛光和紧密接触对防止焊缝中产生过多的气孔和提高焊缝的机械性能有重要作用；激光功率密度、焊接速度、脉冲宽度和脉冲频率四个参数是实现脉冲激光焊接的关键因素。

The working procedure of welding scribing should be strictly carried out in terms of the boards thickness and the National Standard.

对于需要焊接的原材料进行焊缝划线工序，严格按照板厚和国家标准进行焊缝刨制工序。

Through the exact control of welding current, the seaming figure and crystal organization can be improved, and the splash can be reduced, therefore, the mechanical property of seaming is enhanced.

通过对焊接电流波形的精细控制，可以减少焊接过程的飞溅、改善焊缝的形状和结晶的组织形态，进而使焊缝的机械性能得以大幅度的提高。

It was not symmetry about weld centerline the area which the material had deformed. The plasticized materials looked like a slantwise vase in the center of the weld.

塑性变形的区域关于焊缝中心不对称，塑性材料在焊缝中心形成类似于倾斜&花瓶&状的形貌。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐