查询词典 forge welding

To meet the need of improving the welding quality, the microstructure and mechanical properties of the welded joints and the productivity, pure aluminum plate 99.60 is used in the experiment. Combined with micrographic analysis, the effects of electron beam welding on its mechanical properties ,such as strength, hardness and plasticity are studied in this paper.

本文针对应用越来越广泛的纯铝Al99.60，以及对其焊接质量、接头性能及生产率提出的新的要求，结合金相分析，探讨了电子束焊接对其强度、硬度、塑性等基本力学性能的影响规律。

EGW (CO2 as shield gas) has been used prevailingly in vertical welding of large storage tank. But it's easy to make linear porosity in welding.

气电立焊（CO2气体保护）气电立焊技术已经广泛应用于大型储罐的壁板立缝焊接。

The choose of welding technology of ringlike seam root welding is the key of speed and quality of pipeline construction.

环缝根焊的焊接工艺选择是决定管道施工速度和质量的关键。

The results show that spheriform electrode degradation mechanism was basically caused by wear due to fracture of local welding between the electrode tip surface and zinc coated sheet steel happen at electrode surface and alloying between electrode and zinc on zinc coated steel during resistance spot welding zinc coated steel.

结果表明：点焊镀锌钢板时，球形电极的失效机制，主要是电极和镀锌板之间局部焊接的断裂发生在电极表面而导致的电极磨损，以及电极和镀锌板表面的锌之间的合金化。

HG-1800 middle spore-welding machines uses automatic spot-welding in the middle, and makes use of transmitting positive and negative screw rod synchronistically during the process of centering to realize in centering automatically of single group clamping.

HG－1800型中间点焊组立机，采用中间自动点焊，在对中过程中利用正反丝杆同步传动，可实现单组夹紧机构自动对中。

So, we load and stretch the welding components after welding can make tensible stretching deformation,by which the residual stress will also decrease.

因此，焊后对焊件进行加载拉伸，产生拉伸塑性变形而残余应力也随之减小。

At first we established an AC small-signal model of welding inverter and designed a digital controller on the basis of analyzing a typic analog welding control circuit.

本文在这部分的研究工作中，首先建立了弧焊逆变电源的交流小信号模型，并对典型的模拟控制电路进行了分析。

Energy deposition at the interface of the particles caused by micro-explosive welding in explosive consolidation of metal powders is analyzed by symmetrical impaction model of uncompressible liquid. Two-dimensional equation of energy in the flow field of explosive welding is deduced and solved by finite difference method. Then the distribution of the temperature in the flow field is calculated on the basis of considering the adiabatic compression.

摘 要：以不可压缩理想流体对称碰撞模型对金属粉末爆炸烧结中由微爆炸焊接引起的颗粒界面附近沉积的能量进行了分析，在考虑热传导效应的基础上推导出了焊接流场中二维形式的能量方程并用有限差分法对其进行了求解，在考虑冲击绝热压缩贡献的基础上计算出了焊接流场中的温度分布。

In addition, people carry out the undestroyed experiments must assume responsibility for maintaining all the welding processes, as well as examining that welding position.

另外，工人完成了没有破坏性的任务时必有负责任地再维修所有的焊接设备并检查焊接点。

This paper introduces pressure pipe TIG welding(Argon tungsten -arc welding),and resolves successfully the problem that the faults easily occur on the back of the head in the weldi ng by using the method of reversed wir e feeding.

介绍了压力管道 TIG焊，用反向送丝的方法成功地解决了焊接中焊道背部易出现缺陷的问题。

The statistical analysis of this large set of mutations has led us to propose a diagnostic strategy that should help with the molecular work-up of optic neuropathies.

这一大系列基因突变的统计学分析引导我们提出一个诊断策略，可以帮助我们对视神经病变进行分子学的诊断检查。

The results show that the pipe grouting changes the mechanical parameters of surrounding rocks to achieve the security of engineering objectives by reinforcing surrounding rocks and bolcking the water.

研究表明：小导管注浆一方面改变了围岩的力学参数，另一方面利用浆液的固结特性可以实现堵水和加固围岩的工程目标，使隧道在开挖过程中的安全得到保障。