自焊的

It has been a hankering goal to develop self-tracking arc welding robots with high level of automaticity and intelligence.

研制高度自动化和智能化的自跟踪式弧焊机器人以取代示教式弧焊机器人一直是人们热衷的一个目标。

This paper analyzes the characteristic of the Power Factor Correction of arc welding inverter power source , introduces the 12-pulse converter based on delta-type autotransformer connection into arc welding inverter power source ,and its configuration, design scheme and theory on PFC.

分析了弧焊逆变电源功率因数校正技术的特点，阐述了弧焊逆变电源中基于差接三角形自耦变压器十二脉波整流电路的原理与设计及其功率因数校正机理。

Physical parameter substitutes for phase-changing latent heat, then critical temperature of thermal conductivity welding is determined, so finite difference equation can be solved by MATLAB software.

改变热物性参数替代相变潜热确定了热传导焊接的临界温度值，利用自编的MATLAB程序对有限差分方程进行求解，数值模拟了焊件的温度场。

SnPb eutectic solder reflow on BGA pad metallized with Au/Ni to form solder bump with induction self excite heat under alternate electromagnetic radiation is performed, and impacts of induction self excite heat and solid state aging on interfacial reaction between SnPb eutectic solder and Au/Ni metallization are investigated.

进行了交变电磁辐射下附Au/Ni镀层BGA焊盘上SnPb共晶钎料球感应自发热重熔形成钎料凸台的实验，并分析了感应自发热重熔以及固态老化对SnPb共晶钎料与Au/Ni镀层焊盘界面反应的影响。

The lattice relaxation in the CVD diamond thick films were detected by the X-ray diffraction attachments. It is associated with self-annealing of diamond thick films in the process of long time deposition. The wearing discrepancy of diamond coated cuttings and diamond thick films brazed cuttings is well illustrated by means of lattice relaxation.

用X射线衍射仪的薄膜附件测试分析金刚石厚膜内的晶格松弛现象，发现沉积金刚石厚膜过程中存在高温自退火的作用，运用晶格松弛的观点很好地解释了金刚石薄膜涂层刀具与厚膜钎焊刀具的耐磨性能差异。

The main provisions of the welding process assessment for this pipeline project are presented in this paper. Also the applications of some welding processes in the pipeline construction are described including semi-automatic welding process with self-protection flux core welding wire, root welding with Britain NOREAST internal welding machine plus filling and capping welding with domestic PAW-2000 external welding machine, root welding with American CRC internal welding machine plus heating welding with CRC P262 external automatic welding machine plus filling and capping welding with CRC P600 double torches external automatic welding machine.

文章介绍了该管道工程焊接工艺评定的主要规定，以及自保护药芯焊丝半自动焊工艺、英国NOREAST内焊机根焊＋国产PAW2000型外自动焊机填充盖面焊工艺、美国CRC内焊机根焊＋CRCP260外自动焊机热焊＋CRCP600双炬外焊机填充盖面焊工艺在管道施工中的应用。

Is a company specializing in the production of electricity of standard parts, steel standard parts, automobile standard parts, standard parts pipeline, railway standard parts, the new GB standard parts, building standard parts, stainless steel fasteners, high-precision standard parts, high precision fasteners, non-standard fasteners, non-standard fasteners, standard 4.8, 8.8 standard parts, standard parts 10.9, 12.9 standard, GB standard, the new GB standard, British standard standard parts , American standard standard parts, standard parts de superscript, subscript day standard parts, construction fasteners, building hardware, light bolt, square head bolts, hexagon bolt, hexagon bolt big, hot hit bolts, steel bolts, GB30-76 bolts, 5781 Bolt, Bolt 5782, Bolt 5783, Bolt 5784, 5785 bolts, steel structure with high strength bolts connecting deputy, steel torsional shear type high strength bolts used to connect deputy, steel structure with high strength bolts connecting deputy, high-strength steel large hexagon head bolts to connect the Deputy, high strength bolts, tower bolts, rail bolt, wheel bolts, wheel screws, carriage bolts, head bolts, stainless steel bolts, screws Terrier reduction, four wire, to the foot silk, silk double-headed, square head silk, bucket-type wire, fish wire, oval wire, full-profile wire, hook the first wire, the back wire, live wire section, expansion of silk, silk expansion implosion, implosion-type expansion of silk, expansion bolts, railway screw, nut , self-locking nut, hexagonal nut, locknut, galvanized nuts, weld screws, arc stud welding with welding cylinder head screws, weld stud, weld nails without a head, cylinder head welding nails, pin, fastener, standard parts, Yamagata card, u-type cards, special bolts, special-shaped standard parts, special fasteners professional production enterprises.

河北冀南标准件有限公司是一家专业生产电力标准件，钢结构标准件，汽车标准件，管道标准件，铁路标准件，新国标标准件，建筑标准件，不锈钢标准件，高精度标准件，高精度紧固件，非标标准件，非标紧固件，4.8级标准件，8.8级标准件，10.9级标准件，12.9级标准件，国标标准件，新国标标准件，英标标准件，美标标准件，德标标准件，日标标准件，建筑扣件，建筑五金，光螺栓，方头螺栓，六角螺栓，大六角螺栓，热打螺栓，钢结构螺栓， GB30-76螺栓，5781螺栓，5782螺栓，5783螺栓，5784螺栓，5785螺栓，钢结构用高强度螺栓连接副，钢结构用扭剪型高强度螺栓连接副，钢结构用高强度螺栓连接副，钢结构用高强度大六角头螺栓连接副，高强度螺栓，铁塔螺栓，铁道螺栓，轮毂螺栓，轮毂螺丝，马车螺栓，沉头螺栓，不锈钢螺栓，缩梗螺丝，四角丝，地脚丝，双头丝，方头丝，斗型丝，鱼尾丝，鹅蛋丝，全纹丝，钩头丝，靠背丝，活节丝，膨胀丝，内爆膨胀丝，内爆式膨胀丝，膨胀螺栓，铁道螺钉，螺母，自锁螺母，六角螺母，防松螺母，镀锌螺母，焊钉，电弧螺柱焊用圆柱头焊钉，焊接螺柱，无头焊钉，圆柱头焊钉，销轴，紧固件，标准件，山形卡，u型卡，异型螺栓，异型标准件，异型紧固件的专业生产企业。

The self-fluxing performance of these alloys in oxygen-acetylene flame spray-welding has been observed in detail.

制备了含稀土的铁基自熔合金并考察了这种自熔合金在氧-乙炔火焰喷焊过程中的自熔性。

By adding the additive into the non-self-fluxing copper powdered alloy, as a result, the powder shows self-fluxing and improves the oxygen-acetylene flame spraying.

在非自熔性铜合金粉末中加入特制的添加剂，使粉末具有自熔性，并改善了喷焊的工艺性及感应加热熔敷结合的工艺性。

Do not use self-tapping methods or rivets for fastening parts which shall be removed to gain access to electrical components requiring service or replacement, or for fastening any electrical components or their supports.

在固定电气附件或它们的支撑结构，固定有可能需要移除或更换电气附件的部位不能使用自焊钢的方式或铆钉固定的方式。

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