Crack in neck of hollow shaft is a very serious malfunction, main cause of the crack include: foundry defect, centralized stress, quality problems of welding and heat treatment.
中空轴轴颈裂纹是水泥磨的严重故障。中空轴轴颈裂纹产生的原因主要有：铸造缺陷，应力集中，焊接和热处理质量问题等。
Welding crack is one of the important welding defects, which often leads to serious shipping accidents.
焊接裂纹是常见的焊接缺陷之一，焊接裂纹的存在常常导致严重的航运事故。
The crack between the coped and hole was removed by air arc and then repaired by welding.
在修割边和钻孔之间的裂纹用气弧消除，然后进行焊补。
It's quite common to deal with crack by welding in repair of kiln and grind mill.
在回转窑和磨机的修理中，用焊接的方法处理开裂问题是相当普遍的。
Hologram reconstruction using white light is employed in NDT of crack and welding quality of gray cast iron.
本文介绍将象全息的白光再现用于无损检测裂纹和灰口铸铁的焊接质量。
The maintenance scheme based on pipe segment replacement strategy with robotic remote welding illustrates a wide prospect of application for crack repairing task on pipelines in hazardous environment.
对于极限环境管道裂纹修复任务，采用基于管道替换策略的机器人遥控焊接维修方案具有很好的应用前景。
Analyzing bucket teeth material and welding crack, the reason was found out.
分析斗齿材质与焊接裂纹的关系，找出产生裂纹的原因。
The mechanism of welding crack generation in the copper - stainless steel tube electrode stem of Vacuum Consumable Arc Furnace has been analyzed.
分析了真空白耗电弧炉铜-不锈钢异种金属套管式电极杆焊接裂纹产生的机理。
And analyzes the reason and forming mechanism of the defects such as cold crack, air porosity and oxidation etc. proposes the measures of welding process to ensure the welding quality.
分析钛材管道焊接产生的冷裂纹、气孔、氧化等缺陷的原因和形成机理，提出焊接工艺措施，以确保焊接的质量。
If a current with proper intensity has been switched on, the goal of controlling the melting and welding dimension effectively around the crack tip can be obtained.
文中给出的算例表明，适当控制通入的电流强度，可以达到有效控制裂尖熔化区尺寸以及形成焊口的目的。
The results show that martensite at transition area and the thermal stress in the joint of different material will cause crack in clad steel plate during welding.
结果表明，过渡区马氏体组织的生成，异种钢接头的热应力是产生焊接裂纹的主要原因。
The experiment shows that fusion welding reinforcement could proceed on the surface with crack of the die after crack arresting.
脉冲放电止裂后，可对带有裂纹的表面进行强化处理。
Through analysis on inside weld forming and welding procedure of SSAW pipe, it pointed out weld crack is easy to appear in brittle temperature zone in welding pool.
通过对螺旋埋弧焊管内焊缝成型和焊接过程的分析，指出焊缝裂纹易产生在焊接熔池脆性温度区。
The blade tip crack of the high pressure turbine is repaired by using the laser welding, which can reduce effectively the repair cost and increase the economic effectiveness of the engine repair.
采用激光熔焊方法，修复了高压涡轮工作叶片叶尖裂纹，有效降低了发动机修理成本，提高了发动机修理的经济效益。
The main defects of laser spot welding of aluminum are crater, hot crack and porosity which created by oxide film and keyhole instability,.
焊点中存在的主要缺陷是气孔，表面下塌，热裂纹，其中气孔主要为氧化膜气孔和匙孔不稳定形成的气孔。
This paper introduced the welding repair technology of crack in turbine cylinder and pointed out some solved methods to similar defects in turbine cylinder.
本文主要介绍了汽轮机汽缸裂纹缺陷的焊接修复处理工艺，并对电建安装现场施工中类似的缸体缺陷问题提出了一些解决的办法。
The paper introduced briefly produce quality control in pressure vessel′s shell and manhole nozzle welding, how avoided crack and found defect by ultrasonic testing after welding.
介绍了压力容器人孔接管与厚壁筒体相焊时，如何控制产品的质量，避免产生裂纹，焊后通过超声波检测及时发现缺陷。
By analyzing the relation of microstructure, weld zone quality and tensile property, it is concluded that the welding technological parameter of L245 steel is the main factor of the welding crack.
通过分析l 245钢埋弧焊焊缝区质量、微观组织和拉伸性能关系表明，焊接工艺参数的合理制定是低合金钢l 245焊管产生裂纹等缺陷的关键因素。
To do mycology analysis to the blank parent and its cracking weld for different procedure treatment to the blank before welding and occur weld crack during welding forming by different welding method.
用不同焊接方法，对坯料焊前作不同工艺处理，焊接成形时出现焊缝开裂，对其坯料母材及开裂焊缝作显微分析。
Through the exploration of the mechanism of welding cracks on beam hangers, the reason behind the crack is analyzed.
对游梁式抽油机悬绳器焊接裂纹产生原因进行了分析。
Materials and welding performance have been analyzed in this paper, technological measures have been adopted which have effectively control the crack occurring.
本文通过对材料及焊接性能的分析，采用合理的工艺手段，有效地控制了裂纹的产生。
Silic aluminum, good crack resistance and wide range of usage. Welding of aluminum alloys other than aluminum magnesium alloys.
铝硅，抗裂性好，通用性大。铝合金焊接用，不宜焊接铝镁合金。
The result shows that if only we do strictly according to the welding technics requirements and adopt reasonable welding method, crack in neck of hollow shaft can be repaired well.
结果表明只要严格按照焊接工艺要求，采取合理的焊接方法能使中空轴轴颈裂纹得到很好的修复。
A method about improving the crack resistance of weld metal and reducing structure stress during welding process, i. e. hammering welds and watered rapid cooling after welding, was obtained.
研究出了提高焊缝金属抗裂性能及降低焊接过程结构内应力的工艺方法——焊后捶击焊逢并浇水快速冷却。
Besides, the welding stress and wicked water accelerate the crack growth.
同时，焊接应力的存在和水质不良加速了裂纹的扩展。
An expert system of welding crack diagnosis based on knowledge base is posed according to the analysis of characteristic of weld crack.
从分析焊接裂纹的特点出发，提出了基于知识库的焊接裂纹诊断专家系统。
Welding is not good, easy to crack, preheating before welding shall be.
焊接性不好，易产生裂纹，焊前应预热。
It has excellent mould, toughness and crack resistance, use for welding key structure, such as pressure containers, ships and ocean projects, etc.
具有优良的塑性、韧性和抗裂性能，焊接压力容器、船舶、海洋工程等重要结构。
It has excellent mould, toughness and crack resistance, use for welding key structure, such as pressure containers, ships and ocean projects, etc.
具有优良的塑性、韧性和抗裂性能，焊接压力容器、船舶、海洋工程等重要结构。
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