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- The microstructure of weld metal for MAW is blocky ferrite and a little pearlite, the microstructure in the heat-affected zone is new type bainite. 手工焊焊后不热处理焊缝组织主要为块状铁素体和少量珠光体,热影响区组织为新型贝氏体组织;
- Microstructure of weld metal is characterized coarsened austenic granular crystal,and the fusion of interface is fine, crystal of overheated zone do not grows up severely. 焊缝为奥氏体组织,呈较为粗大的柱状晶形态,且与母材熔合良好;过热区的晶粒长大不严重。
- Microstructure of weld metal is characterized coarsened austenic granular crystal, and the fusion of interface is fine, crystal of overheated zone do not grows up severely. 焊缝为奥氏体组织,呈较为粗大的柱状晶形态,且与母材熔合良好;过热区的晶粒长大不严重。
- The microstructure of weld metal for SAW is acicular ferrite, and there is new type bainitic microstructure in heat-affected zone, grains are well-distributed and good joining in bond area. 埋弧焊焊后不热处理焊缝部分组织为针状铁素体,熔合线结合良好,组织分布均匀,晶粒细小,热影响区组织为新型贝氏体。
- Microstructure of Weld Metal Prepared with High Fracture Toughness Flux-cored Wire 高韧性药芯焊丝焊缝金属的显微组织
- microstructure of weld metal 焊缝组织
- Addition of activating agent has no obvious effect on fracture toughness of weld metal. 添加活性剂对焊缝金属的断裂韧性没有明显作用。
- The paper shows a new weld metal detection system which adopts active infrared technology on the base of the study of the change of microstructure and chemical ingredient of weld in welding process. 文章通过对焊接过程中焊缝显微组织结构和化学成分变化的研究,提出了一种采用主动红外技术对焊缝形位进行检测的新系统。
- Addition of activating agent had no obvious effect on fracture toughness of weld metal, but it improved the length of ductile crack propagation. 添加活性剂对焊缝金属的断裂韧性没有明显作用,但对延性裂纹扩展长度有所改善。
- The microstructure of welding intracrystalline repair welded with flux does not grow up with increasing time. 涂活性剂焊缝区晶内组织并未因补焊次数的增加而粗大;
- The microstructure of welded joints by manual SHS welding was studied,and the mechanical properties of the welding seam were tested. 分析了手工自蔓延焊接接头的微观组织,测试了焊缝的力学性能,研究了焊缝合金与母材过渡区的元素分布及存在方式。
- The results show that the tempering temperature of welding metals affects the microstructure, the hard phase types, performance and distribution of deposited metal. 结果表明:回火温度不仅对熔敷金属的显微组织有影响,而且对硬质相的类型、性能及分布等也有影响;
- Microstructure of Steels and Cast Irons. 钢与铸铁的显微组织。
- Welding on large oblique nozzle to shell joint is one of the most difficult points for manufacturing a large gasifier due to special joint shape and high volume of weld metal. 摘要气化炉大型插入式斜接管与筒体的焊接由于接头形状特殊,熔敷金属量大,是气化炉制造的难点之一。
- Through hardness test, impacting test, SEM of failure surface and microstructure observation, the relationship between the toughness and its microstructure of welding joint of T92 steel was studied. 通过硬度试验、冲击试验、断口扫描和金相组织观察,研究了T92钢焊接接头的韧性与组织的关系。
- The microstructure of welding seam is affected by cooling rates.The microstructure of welds consists of dendritic structure near melted line and equiaxed grain at the centerline of welding seam. 冷却速度对显微组织的形成影响明显,在靠母材的焊缝两侧,焊缝的显微组织为树枝晶,而焊缝的中心为等轴晶;
- Just because your car is constructed of welded metal parts doesn’t mean that you must be skilled with a welding torch to drive it. 虽然汽车是由金属部件焊接构成,但并不意味着你必须熟练掌握焊接技术才能开车。
- Either coarse or column austenite grain can decrease the toughness of welding metal,and the ways to improve the toughness of wel... 奥氏体晶粒粗大及奥氏体柱状晶都能够降低焊缝的韧性,并提出了改善焊缝韧性的途径。
- The microstructure of the Nidoped SiC is studied in detail. 同时还分析了镍的存在方式及其相结构。
- A cavity is made on both sides of weld bead. 在焊道表面两侧作一空腔。