乙炔

In recent years, cutting the development and application of technology has been developed by leaps and bounds, cutting technology has shifted from the traditional oxyacetylene flame cutting into the development of new industrial gas flame cutting, plasma arc cutting, laser cutting, water jet cutting, and other energy sources, a variety of Methods of modern technology, cutting technology, modern control technology at the same time again and cutting technology to combine research and development of a new generation of automated cutting machines.

近年来，切割技术的开发和应用取得了长足的发展，切割技术已经从传统的氧乙炔火焰切割发展成为新型工业燃气火焰切割、等离子弧切割、激光切割、水射流切割等多能源、多种工艺方法在内的现代化切割技术，与此同时又将现代化控制技术与切割技术想结合，研究开发出新一代的全自动切割设备。

The flame use oxyacetylene or other burnt gases, for this method, the equipment is simple, the operation is easy, but the difficulty is large.

火焰采用氧—乙炔火焰或其它可燃气体火焰，这种方法设备简单，操作容易，但难度较大。

Although the total calorific value of oxypropane flame is higher than that of oxyacetylene flame, its first calorific value is lower,so its burning temperature is lower and its heating time is longer.

氧丙烷焰比氧乙炔焰的总热值高，但一次热值低，因此燃烧温度低，预热时间较长。

The WC coating was prepared by conventional oxyacetylene thermal spraying.

用常规氧-乙炔焰喷涂制备WC涂层。

Our company has different types of cobalt-base alloy powder, which can meet the requirements of laser cladding for plasma surfacing and oxyacetylene flame welding.

我公司生产的钴基合金粉，既有适合等离子堆焊的、激光熔敷的，也有适合氧乙炔焰喷焊的，下面介绍的钴基喷焊合金粉，采用塑料桶和铁桶封装，但由于粉末颗粒较细，极易吸潮，建议用户在使用前经120℃保温两小时烘干后使用为佳。

The phase diagram of diamond deposition in atmosphere oxyacetylene flames was calculated according to our non-equilibrium thermodynamic coupling model, and the ranges of substrate temperature and gas flow ratio for diamond growth were obtained theoretically.

本文用非平衡热力学耦合模型计算了常压乙炔火焰生长金刚石的相图，从理论上得到金刚石生长合适的衬底温度及气体流量比条件。

Composite materials guide can be gotten by strengthening carbon steel guide with oxyacetylene hot spray welding.

用氧化乙炔焰热喷焊技术对普碳钢导卫装置进行表面强化，制成复合材导卫以替代高碳高合金导卫，取得较好效果。

14 If using oxyacetylene flame to cut welded fixture on alloy steel pipeline, shall cut at the point 3mm away from surface of the pipeline, and then grind the surface with grinding wheel.

7.2.14 当采用怕氧乙炔焰切割合金管钢管道上的焊接卡具时，应在离管道表面 3mm 处切割，然后用砂轮进行修磨。

The welding of end ring of alternating current machine and the conducting bar is the key technology for manufacturing of asynchronous traction motor with high power. China South Locomotive and Rolling Stock Industry Corporation had taken this significative study as a key project for the manufacturing of alternating current machine. According to the welding of end ring of alternating current machine, the welding of copper and copper alloy is described in this paper. Results obtained in this study are as follows. 1.By the comparison of oxyacetylene gas brazing, induction brazing and resistance brazing, it was found that high-quality welding joint could be obtained by induction brazing, which also had the highest efficiency.

交流电机端环与导条的焊接是大功率异步牵引电动机制造的一项关键技术，开展其焊接工艺研究具有重要的意义，中国南车电机公司将此课题作为解决交流电机制造的一个重点项目，本文结合交流电机转子端环焊接的课题，对铜及其合金的焊接进行了研究，主要研究结论如下： 1、通过氧乙炔火焰钎焊、感应钎焊、电阻钎焊等焊接方法的对比试验发现感应钎焊可获得优质的焊接接头，且感应钎焊的焊接效率也是最高的。

When compressed air as plasma gas enthalpy value of the high arc voltage than 100V, power supply voltage of 200V or more30mm thickness of the cut the following materials, have been replaced by an oxyacetylene flame cutting trend.

压缩空气作离子气时热焓值高，弧压100V以上，电源电压200V以上，在切割30mm以下厚度的材料时，已有取代氧乙炔焰切割的趋势。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。