焊的

Group companies responsible for water, electricity, gas supply, foreign Forwarders Electrical engineering, plumbing engineering, Die with, cold-formed and welded pipe mill roll forming production, welded pipe mill, cold-formed units, strip slitting unit and other non - Design and manufacture of standard equipment.

公司除负责集团公司水、电、汽供应外，对外承揽机电工程、水暖工程、冷冲模具、冷弯及焊管机组成型轧辊制作、焊管机组、冷弯机组、带钢纵剪机组等非标设备的设计制作。

For magnetic powder or the seepage check of slip-on welding flange Type A and Type B, weld connection surfaces between the flange and cylinder or short pitch., its method should conform to JB4730, checking results must reach level I to prove to be valid.

6.6.1.3 对甲型平焊法兰、乙型平焊法兰，法兰与圆筒或短节间的连接焊缝表面应进行磁粉或渗透检测，检测方法按照JB4730，结果一级合格。

5 Adjust and determine reflow and wave soldering machine profile for NPD PCB Assembly.

为新产品的线路板调整和制定回流焊/波峰焊温度曲线

Suitable for welding general carbon steel and zinc-coated steel sheets for ships, especially suitable for vertical downward welding and intermittent welding on thin plates.

焊接低碳钢及镀锌板，特别适用于薄板的立向下焊及间断焊。

Can be switched automatically to slow-speed wire-feeding mode when arc is inducted.

连续焊、点焊、间接焊功能，适合不用的焊接需求。

And baking oven can damage the weld bead so that re-melting and re-engagement with the pad.

而烤箱烘烤则可以使损坏的焊珠重新融化并再次与焊盘接触。

Unlike soldering methods, which rely on ovens for heating, vapor phase reflow delivers consistent heating across the board.

印刷电路板装配方法是典型的红外对流再流焊，或气相再流焊。

The experimental results show that with given two-wire submerged arc welding process, the low temperature toughness of the steel welds is good and the joint of medium thickness steel plant with twin-wire submerged arc welded technics can be used without heat treatment after welding.

该钢种中等厚度双丝埋弧焊焊接接头可以在不进行焊后热处理的情况下使用。

Lateral oscillation arc welding, high-speed-rotating arc welding, twin-wire welding, and ultra NGW can all assure the fusion of side wall and improve the oppearance of weld in relatively small welding variables.

横向摆动电弧、高速旋转电弧、双丝焊和超窄间隙焊4类方式都可以在较小的焊接规范下，保证侧壁熔合，改善焊缝成形，防止焊接裂纹。

In this paper, the electrical control system for SMT solder-reflow machines is designed, based on the SMT solder temperature curve.

本文围绕SMT回流焊温度曲线的控制要求，对SMT回流焊电控制系统进行了设计和开发。

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％。