The steam leakage was occurred on the welding zone of the tube sheet of the austenitic stainless steel heat exchanger.
在奥氏体不锈钢制再沸器的上管板与壳程筒体焊接的管板一侧发生蒸气泄漏。
The changes of microstructure in welding zone and its vicinity were observed, and flexural strength of the welding zone was also tested.
观察分析了焊接区及其附近的组织变化，测试了焊接区的室温弯曲强度。
The stress of the welding zone decreases with the increase of the distance between the welding zone and other stress concentration zone.
焊缝位置越远离其他应力集中区，焊缝应力越小；
To ensure the quality of products of the stability and reliability, providing the customers with better quality of photovoltaic welding zone.
保证产品品质的稳定性和可靠性，为客户提供更优质的光伏焊带。
By using this process to repair castings, there is no obvious separating line, no slag inclusion and gas hole between the welding zone and base metal.
用此工艺焊补铸件，焊补区域与基体间没有明显的熔合线，无渣孔、气孔等缺陷。
The temperature difference of welding zone can be decreased with small dipping angle, high dipping speed and low heat exchange coefficient of dipping Zn liquid.
降低浸镀锌液的换热系数，采用小角度快速浸入可以降低焊缝区域温差。
The corresponding relations between temperature field and microstructure of welding zone were validated by comparing simulation results with microstructure morphology.
通过模拟温度场结果与焊缝区组织的比较，验证了不同的温度场与不同焊缝组织的对应关系。
The results show that the coupling effect between the welding zone and other stress concentration zone can be observed, which decreases the fatigue life of the structure.
结果发现，焊接区与其它应力集中区会发生应力耦合效应，进而降低结构的疲劳寿命。
The large welding current caused the formation of quenched martensite and the high residual stresses in the welding zone, resulting in the increase of zinc sensitivity of hydrogen attack.
结果表明：由于焊接电流过大，使焊缝产生淬火马氏体组织及较大的焊接残余应力，导致镀锌氢脆敏感性增加，造成吸油盘发生氢脆开裂。
After visual inspection and metallographic test, analysis and discuss the welding zone cracking reasons for 6061 and A7003 aluminum alloy thin-walled tube after TIG (argon shielded arc) welding.
通过宏观及微观检测，分析了6061铝合金管及A7003铝合金薄壁管经TIG(氩弧)焊后的焊接区开裂的原因。
The transformation superplasticity in welding CGHAZ (Coarse Grain Heat Affected Zone) of EH36MOD steel and its effect on fatigue life have been studied with thermal simulating method.
采用热模拟方法，对EH36MOD钢焊接热影响区粗晶区(CGHAZ)的相变超塑性及其对疲劳寿命的影响进行了研究。
It is proved by fractal theory that the welded state of every micro zone at welded surface is uneven in the formation process of isothermal superplastic solid-state welding joint.
这也从分形理论的角度证明了在超塑性固相焊接头的形成过程中，焊接面各微区的焊合状态是非均匀性的。
This paper analysed and calculated the dynamic yielding strength of plastic deformed metal in the bonding zone of explosive welding composite material in the condition of explosive welding.
用比拟的方法分析和计算了爆炸焊接条件下，爆炸复合材料结合区中塑性变形金属的动态屈服强度值。
The main region of invalidation of the weld joint between different steels is commonly in fusion zone during welding or serving.
异种钢焊接接头在焊接时或使用期间，发生失效的主要区域通常在熔合区。
In frequent bending stress condition, fatigue cracking occurred due to the cracking source had been initiated in welding heat affected zone.
在承受频繁的弯曲应力作用后，在其焊接热影响区萌生了裂纹源进而发生疲劳开裂。
A new view of characteristic zone of fusion welding joint is put forward through observations and researches of many fusion welding joints.
通过大量的熔化焊接头试样的观察和研究，提出了熔化焊接头特征区域划分新方案。
Using the heat of welding to vapour water, cooling rates are lowered on the weld bead and heat -affected zone.
利用焊接时的加热使水汽化，不仅使焊道而且使热影响区的冷却速度减慢。
Modern analytical methods have been used to investigate the patterns of fusion zone and the diffusion behaviors of elements by tig direct welding and tig with Sn as transition layer welding.
利用现代分析测试手段分别研究了TIG焊直接焊接镁铝和镀锡焊接镁铝的焊缝熔合区形貌，并对其进行了元素扩散行为的分析及比较。
The structure and dimension of welding pin are the main factors which affects the flow direction of the plastic metal in FSW zone and the quality of the FSW seam.
焊接过程中搅拌焊针的结构形状是影响焊缝区塑性软化材料流动方式的主要因素，从而影响焊缝的成型质量。
Through the analysis of material and construction, the dissimilar steel gear is successfully welded using stress reduction zone by heating and proper assemble and welding sequence.
通过对铸焊齿轮的材料和结构的分析，利用“加热减应区”法及适当的装配焊接顺序，成功地焊接了异种金属的合金钢齿轮。
The effects of high temperature pre-precipitation on the stress corrosion properties of the heat affected zone were also studied after welding.
并研究了高温析出对焊接热影响区及后处理应力腐蚀性能的影响。
The joint which is connected by welding method is called the welding joint, which is composed of welding seam, fusion zone, heat affected zone and its adjacent base metal.
用焊接方法连接的接头称为焊接接头，它由焊缝、熔合区、热影响区及其邻近的母材组成。
Under the experiment's welding condition, WCX355 ultrafine grained steels didn't distinctly embrittle in CGHAZ and didn't soften in tempering zone either.
在试验的焊接条件下，WCX355超细晶钢在热影响粗晶区未有明显脆化，在回火区也未发生软化现象。
In addition, the metal body within welding heat effect zone will produce a lot of micro-cracks because of infiltration of solid solution nitrogen in course of porcelain spraying.
此外，喷瓷管道焊接热影响区的金属基体将由于喷瓷过程中渗入的固溶氮而产生大量微裂纹。
Owing to heat action during X80 pipeline steel welding the organization and performance of heat affected zone will change considerably in particular of coarse grain heat affected zone (CGHAZ).
X80管线钢在焊接过程中，热影响区由于受到焊接过程热的作用，其组织和性能会发生较大的变化，尤其是粗晶热影响区的组织和性能变化最大。
The hardness tests on welding joints prove this by showing that the hardness reduces in fusion area, and increases slightly in weld zone.
通过对焊接接头的硬度检测，发现熔合区硬度下降，焊缝区略有上升。
Original preheating temperature: the temperature of the workpiece in the weld zone immediately prior to any welding operation.
初始预热温度是指任何焊接操作开始之前，焊接区域内工件的瞬时温度。
This kind of welding makes the change of the aggregative structure in seam zone thus resulting in a slightly better strength in this zone than in the matrix.
热板焊接导致了焊缝区的聚态结构发生变化，从而使焊接接头的强度略高于母体强度。
As an emphasis, the fusion zone is always studied by the welding engineers for a long time.
长期以来，异种钢接头熔合区一直是焊接工作者研究的重点。
Nitride precipitation is the primary type of nitrogen loss in the heated affected zone during welding process.
焊接加工时热影响区氮化物析出是固溶氮的一种主要损失方式。
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