查询词典 welding

LTHJ-SUPER-A1 Gantry welding automatic recovery machine This system is set for one body super new portal welder, special cylindrical welding tools or difficult welding. It adds super negative pressure wind pump on inner side of flux cylinder, so that in the welding process it can absorb unlyzed flux directly into cylinder and place into a small hopper. Open the valve of small hopper and put flux onto work piece, then you can put it into repeated usage.

LTHJ-SUPER-A1型龙门焊自动回收系统本系统是一体超强新型的门式焊机或外圆焊接特制工具、高难度的焊接而设置的，它就是一个焊剂筒内加上超强负压风泵，使在焊接过程中尚未溶化的焊剂直接吸收到筒内，放置到小料斗中，打开小料斗阀门把焊剂放到工件上，进行往复使用。

Shanghai Institute of Mechanical ＆ Electrical Engineering,Shanghai 200040,ChinaAbstract: With the development of pulse arc welding,especially to foretime some material with high heat tenderness difficult to weldthe situation difficult to weld(such as full position welding,narrow gap welding,and the pipe,thin workpiece need singlefaced welding to make doublefaced moulding).

脉冲弧焊工艺的发展，特别是对一些难焊的、热敏感性高的材料和难于施焊的场合(如全位置焊、窄间隙焊以及要求单面焊双面成形的管件、薄件)，脉冲焊均显出独特的优越性。

Reduce the melting zone porosity methods include: welding pre-cleaning, welding process using inert gas welding area and selection of the full protection of the lower cooling rate of the welding parameters.

降低熔化区气孔率的方法包括：焊前清洗、焊接过程中用惰性气体充分保护焊接区和选择较低冷却速度的焊接参数。

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。

The results show that, Au-19.25Ag-12.80Ge brazing alloy is better, its melting temperature range is 446.76494.40 ℃, and the temperature interval between the solidus and the liquidus is 47.64 ℃. When the brazing temperature is in the range of 510550 ℃, the alloy has a good spreadability and wettability with Ni. Interface structure observation reveals that there is one continuous intermetallic layer between the brazing alloy and the base metal Ni when welding. X-ray energy spectrum analysis results show that the intermetallic layer is Ge3Ni5, and because of its brittleness, the overthick intermetallic layer will decrease the shear strength of the welding joint, therefore, the welding technology should be controlled so as to gain an ideal welding interface structure.

研究结果表明：Au-19.25Ag-12.80Ge合金的性能较好，其熔化温度范围为446.76~494.40 ℃，结晶温度区间为47.64 ℃；焊接温度在510~550 ℃范围内时，Au-19.25Ag-12.80Ge钎料合金与Ni基体具有良好的铺展性和润湿性，焊接时钎料合金与Ni基体之间形成了一条连续的金属间化合物层，能谱分析表明该金属间化合物层为Ge3Ni5，由于该化合物较脆，过厚的金属间化合物层使焊接接头的剪切强度下降，故应适当控制焊接工艺以获得理想的焊接界面组织。

As the steel carbon and alloy elements working together to make it extremely easy to lead in the welding hardened organization, welding poor performance should be this, pearlitic heat-resistant steel in general preheating before welding, after welding tempered.

由于钢中碳和合金元素的共同作用，使其在焊接时极易形成淬硬组织，焊接性能较差，应此，珠光体耐热钢一般焊前进行预热，焊后进行回火处理。

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。

And the primary products are high quality round steel, strip steel, screw steel, high speed line material , galvanized iron wire, black annealed wire, draw wire, flat wire, precut iron wire, welding wire mesh, hexagonal wire mesh, welding wires for gas shielding arc welding, welding electrode, common nails, roofing nails, concrete nails, coil nails, staples, u nails, T nails, blots and nuts, galvanized barbed wire, steel strip, barchair ,etc.

目前，公司主要生产金属制品母材和各种金属制品，主要产品优质圆钢、带钢、螺纹钢、高速线材、镀锌铁丝、软质黑铁丝、冷拔产品丝、扁丝、切断丝、电焊网、六角网、CO2气保焊丝、电焊条、普通元钉、瓦楞钉、水泥钉、卷钉、订书钉、 U型钉、枪钉、螺栓、螺母、刺绳、打包铁皮、铁架子等300多个品种规格，其中，元立牌镀锌铁丝荣获&浙江名牌产品&和&浙江省著名商标&称号，钢钉系列产品荣获&国家免检产品&称号。

At present, welding atomization, welding robotization and welding intelligentizing are becoming the trend of welding industry.

目前，焊接过程的自动化、机器人化以及智能化已成为焊接行业发展的趋势。

From the USA and Thailand has one of cola companies TECHALLOY of nickel-based welding materials, the United States Oxford Oxford special welding consumables company, USA Miller Electric Company Miller Welding Power Supply, Germany Siegfried Siegmund Mans and Germany Forster Foster's three-dimensional flexible welding table, as well as Germany's Express AMF fixture and hydraulic clamping system.

其中有来自美国泰可乐公司TECHALLOY的镍基焊接材料，美国牛津公司Oxford的特殊焊材，美国米勒电器公司Miller的焊接电源，德国西格芒Siegmund公司和德国福斯特FORSTER公司的三维柔性焊接工作台，以及德国 AMF 公司的快速夹具和液压夹紧系统。

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。