• The result shows that the velocity field changes with the increase of space from shoulder and stir tool and the flow of weld metal from top to bottom and stir zone to rotation zone also weakens.

    实验结果表明随着轴肩搅拌针距离增大速度开始减弱,焊缝金属面向底面、由搅拌旋转区的流动随之减弱。

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  • The microstructure and fine structure of weld fusion zone for high strength fine grain steel were studied.

    研究强度晶粒碳素钢焊接接头熔合附近显微组织精细结构

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  • Improvement of elongation of joint is related to weaker cool deformation degree of heat affect zone (HAZ) and uniformity of strength and stress level between weld and base metal.

    接头延伸改善影响变形程度减弱焊缝强度应力水平同母材趋于一致有很大关系

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  • The Charpy impact test of base metal, weld and heat affected zone of X80 grade pipeline steel of certain factory was conducted, and its effective grain was researched.

    x 80高管线母材、焊缝影响进行比冲击韧性试验,对有效晶粒进行了研究。

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  • Through the analysis of elements affecting the rough crystal zone in pipeline steel weld, it raises the flexing direction of rough crystal zone of pipeline steel.

    通过管线焊接韧性影响因素分析提出了管线钢粗晶区的韧方向

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  • The main region of invalidation of the weld joint between different steels is commonly in fusion zone during welding or serving.

    异种焊接接头焊接时或使用期间,发生失效主要区域通常熔合

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  • Dynamic recrystallization takes place in the weld nugget zone and fine grains are achieved.

    发生动态再结晶,生成细小等轴晶粒。

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  • The hardness tests on welding joints prove this by showing that the hardness reduces in fusion area, and increases slightly in weld zone.

    通过焊接接头硬度检测,发现熔合硬度下降焊缝略有上升。

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  • The paper studies the fatigue failure probabilistic model of the weld zone in welded joint using probabilistic fracture mechanics and reliabilitistic analysis methods.

    本文采用概率断裂力学方法可靠性分析方法,针对压力容器焊接接头组织不均匀特点,研究焊缝疲劳失效概率模型

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  • The concept of "weld bead heat affected zone"(WBHAZ) was proposed.

    提出影响概念

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  • Crack propagation conducts alternatively between the weld zone and the partially molten zone, and is not strictly to rupture at W/F boundary surface.

    裂纹扩展焊缝熔化之间交替进行,并非严格W/F界面断。

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  • 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工件瞬时温度。

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  • The properties in weld deposit metal and Heat Affected Zone are strictly homogeneous with the base metal.

    焊接性能影响金属矿床严格均匀金属基材。

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  • 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埋弧焊焊缝质量微观组织拉伸性能关系表明焊接工艺参数合理制定低合金钢l 245管产生裂纹等缺陷的关键因素

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  • By strictly clearing up weld zone, improving welding material's purity, strengthening molten pool's shield and controlling energy input etc measures, weld zone's hot crack and blowhole were prevented.

    采取严格清理焊接、高纯净度保护控制线能量措施消除了蒙乃尔合金焊接中的气孔裂纹,保证了产品焊接质量。

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  • The appearence characteristics of the heterogenous mixture zone near the bottom of weld metal in the fusion welded joint are studied through metallographic observations of many fusion welded joints.

    通过大量熔化焊接金相观察研究了熔化焊接头焊缝底部附近不均匀混合”的形貌特征

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  • Recognizing that the solubility of gas is greater in the liquid state than in the solid state, the subject of weld porosity is relevant to fusion zone discussion.

    认识溶解度气体更大的,液体状态固体状态下,焊缝孔隙率相关熔合区的讨论。

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  • The fracture rod has cracks in the microstructure of weld zone, intergranular cracks exists in the coarse grain zone of the weld heat affected zone.

    进一步比较断裂拉杆已经产生裂纹拉杆焊缝区的显微组织,发现焊缝影响存在沿裂纹。

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  • After solution treatment, the weld grains become coarse along with a large amount of granular precipitates dispersed in weld zone and base metal zones.

    经过处理后,焊缝组织晶粒大,焊缝母材弥散分布大量颗粒状析出物。

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  • The influence of weld heating on microstructure of heat affected zone was investigated in this paper.

    探讨了焊接加热影响组织影响

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  • Weld metal zone are mostly acicular ferrite which can improve the weld zone toughness.

    焊缝金属晶粒分布均匀,焊缝金属区为针状铁素体能够提高焊缝区的韧性

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  • 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.

    通过螺旋埋弧焊管内焊缝成型焊接过程分析指出焊缝裂纹产生焊接熔池脆性温度

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  • It is found that the weld of fine grain steel break apart from heat effect zone in the tensile test.

    经实验发现晶粒碳钢焊接接头拉伸试验断口远离影响区的母材上。

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  • Using the heat of welding to vapour water, cooling rates are lowered on the weld bead and heat -affected zone.

    利用焊接加热使汽化,不仅使焊道而且使影响区的冷却速度减慢。

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  • The results show that the TIG weld joint of ZM5 magnesium alloy is composed of heat affected zone, partially melted zone and weld metal.

    结果表明ZM5合金TIG焊接接头影响部分重熔焊缝组成。

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  • The microstructure in weld metal, heat affected zone (HAZ) doesn't change, but the grains in HAZ grow up.

    焊缝金属影响中的微观组织基本没有变化热影响区组织晶粒略有长大趋势。

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  • It can also avoid pretermission of plating, burnout of zinc layer on weld beam and heat affected zone, and other limitations on the inner surface of fuel tank made of galvanized sheet.

    从而避免了传统电镀锌板直接焊接成型油箱表面、焊缝影响烧损缺陷

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  • Using the finite element method, a mathematical model of temperature field for weld-repaired zone of white cast iron is constructed, and temperature field and heat cycle are analyzed.

    应用有限元方法建立白口铸铁焊接接头焊补温度数学模型,对白口铸铁焊补温度场循环进行了分析。

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  • The fracture toughness of the weld metal is lower than that of the base metal and the fracture toughness of heat-affected zone (HAZ) is intervenient between those of weld metal and base metal.

    接头焊缝金属断裂度显著低于母材,影响断裂韧度介于母材和焊缝金属之间。

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  • Micro characteristic of cracks propagation research: the path of crack propagation in the heat-affected zone and weld metal is the mix of transgranular and intergranular.

    裂纹扩展微观特征研究热影响区焊缝区的裂纹扩展均为沿晶与穿混合型。

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