焊开

Focused on many problems existing in pressure control system of drilling pipe friction welding,such as high failure rate and poor amenability,the basic principles of friction welding and electro-hydraulic proportional technique were briefly described.

针对焊接钻杆连续驱动摩擦焊机采用开关阀组成压力控制系统存在故障几率高、可控性差等问题，将电液比例控制技术应用在摩擦焊压力控制中，实现了摩擦焊轴向压力闭环控制、滑台进给速度的开环控制；可对摩擦焊机主轴速度、轴向压力、轴向缩短量、主电机电流、油温等进行实时检测。

Our process capability: Plates: FR4, High TG FR4, high CTI FR4, high frequency materials, halogen-free materials, aluminum and other low-rise Materials :2-20 layer of finished copper thickness :0.5-5 OZ finished thickness: 0.2 -6.0mm Minimum line width: 3mil Minimum line spacing: 3mil smallest shape tolerances:+/-0.1mm minimum finished diameter: 0.1mm maximum thickness aperture ratio: 12:1 wide minimum solder bridge: 4mil characters minimum line width: 5mil Minimum height of characters: 30mil Solder Mask Color: Green, black, blue, white, yellow, purple characters such as color: white, yellow, black and other surface processes: spray tin, lead-free HASL, Electroless gold plating Shuijin, OSP, chemical Shen tin, silver and other chemicals Shen Process: Goldfinger, blue gum, Blind-via/Buried-via, characteristic impedance control, rigid-flexible combination of reliability testing such as: Open / Short testing, impedance testing, solderability testing, thermal shock testing, metallographic analysis of micro-slice curvature Isoptera: 0.7% flame retardant Level: 94V-0

我们公司的制程能力：板材：FR4、高TG FR4、高CTI FR4、高频材料、无卤素材料、铝基材料等层数：2-20层成品铜厚：0.5-5 OZ成品板厚：0.2-6.0mm最小线宽：3mil最小线间距：3mil最小外形公差：+/-0.1mm最小成品孔径：0.1mm最大板厚孔径比：12：1最小阻焊桥宽：4mil最小字符线宽：5mil最小字符高度：30mil阻焊颜色：绿色、黑色、蓝色、白色、黄色、紫色等字符颜色：白色、黄色、黑色等表面工艺：喷锡，无铅喷锡、化学沉金、电镀水金、OSP、化学沉锡、化学沉银等其它工艺：金手指、蓝胶、盲埋孔、特性阻抗控制、刚柔结合等可靠性测试：开/短路测试、阻抗测试、可焊性测试、热冲击测试、金相微切片分析等翅曲度：≤0.7%阻燃等级：94V-0

Maybe the welding between soleplate of head and foreside has fallen.

也见过几例这样装的，可能是刀首底板与前部开焊丢失，老配的。

Solder balls (50) are then placed on the metal pad openings on the interposer substrate and are reflowed to form a wafer-level BGA structure.

焊球(50)然后被置于插入器衬底上的金属焊盘开孔上并将之反流以形成一圆片面BGA衬底。

Accordingly, the accident of sulfide stress corrosion cracking should be taken into account.The SSCC sensitivity and cracking time of 16Mn steel used to make the cold-high pressure segregator and common 16Mn steel in solutions with various H2S contents and pH values, simulated solution and operating solution were investigated by constant strain bend and slow strain rate test.Hydrogen diffusion coefficients of 16Mn steel, 16Mn steel and their welded seams were also tested by the electrolyte hydrogen charged method.Safety evaluation of the cold-high pressure segregator was given with above results.

针对制造过程中由于开孔失误而进行补焊的冷高压分离器在高压、高浓度的H2S环境的使用安全问题，采用了电化学充氢、恒应变和慢拉伸的实验方法，研究了制造冷高压分离器的主体材料16Mn钢和普通的16Mn钢及其焊缝的氢扩散系数，在不同H2S浓度、pH值，模拟冷高压分离器操作环境溶液和实际溶液中的腐蚀规律和硫化氢应力腐蚀开裂敏感性，结合实际腐蚀环境的检测和分析结果，对补焊后的冷高压分离器的使用安全给出了综合评估。

When the welding rod or larger wire-bond to enter the link above, to remove from the flame.

当焊杆或焊线进入连接处时要将火焰从其上面移开。

Wear of the cam requirements apertognathia welding and replacement parts, disability and in disturbthe, avoid regulation disorder after a series of technology failures, at the same time according to the operating instructions for motorised offset press relations table may require adjustments to the data sheet transfer very lucky to have teeth, drum, delivery of dental clishion three parts in informention begnawing paper delivery must be adjusted in line with a sheet transfer very lucky to have teeth, drum, delivery time dental clishion Zhang arterious, Mr.

磨损的不开牙凹轮请求焊补和调换陈的配件，呈现漏洞，不给乱不静，制止调度井然后带来一系列工艺障碍，同时给根据胶印机搁置仿单的机不静干系外洋所请求的数据举行公道调不静，递纸牙、滚筒不小牙、收纸牙垫不一不小局部在咬纸传达时矮矮务必调不静分歧，递纸牙、滚筒不小牙、收纸牙垫弛不开工夫、弛不开巨细务必分歧，移交不确到位，都是在摈斥咬口纸边咬破障碍时调不静历程洋不该出格夺目的几个题目。

Mobile positioning system or dynamic table so that the laser head is cutting material in the system-driven subcapital high speed, laser head from the light source and cutting heads, light source produces a very short wavelength focused laser beam, laser beam through cutting heads, vertically focused the material being cut on the surface, heating and melting, evaporation is cutting material, resulting in the closure of Lancing, slotted openings formation pads.

移动定位系统妪动工作台或激光头，使得被切割材料在系统驱动头下高速运动，激光头由光源部分和切割头组成，光源部分产生波长很短的聚焦激光束，激光束通过切割头，垂直聚焦在被切割的材料表面上，加热、融化、蒸发被切割材料，形成切缝，闭合的切缝形成焊盘开孔。

The following theoretic analysis shows that structure damages such as external-bounded electrode ungluing and solder joint melting are caused by airflow erosion,centrifugal force and a block temperature of more than 400 ℃ on the nose of the fuze due to the high velocity of the shell.

理论分析说明：由于弹速高，空气阻力使引信头部产生超过400 ℃的阻滞温度，加上气流冲刷和离心力，造成的外贴电极开胶和焊点熔化等结构破坏。

Factory opened its own mold workshop, professional-style ear earplugs provide precision shell mold; has 30 grams of small injection molding machine 4 Units, providing small pieces of plastic processing services; have manually point soldering production line, to ensure that not every headset mistake occurred next, muff, welding the situation is not strong, and ensure the quality of the headphone processing.

工厂自有开模车间，专业提供精密耳塞式耳壳的开模；有30克小型注塑机4台，提供小型塑胶件的加工服务；有手工点锡焊生产线一条，能确保每一条耳机不会出现错接、漏接、焊接不牢的情况，保证了耳机加工的品质。

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％。