Topic
Filler metal
About: Filler metal is a research topic. Over the lifetime, 11152 publications have been published within this topic receiving 86590 citations.
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11 Sep 1978
TL;DR: In this article, the authors presented an improvement of a welding process for welding a steel pipe, wherein a gas metal arc welding was performed to form the first welding layer and a submerged arc welding is performed to forming the last welding layer.
Abstract: Disclosed herein is an improvement of a welding process for welding a steel pipe, wherein a gas metal arc welding is performed to form the first welding layer and a submerged arc welding is performed to form the last welding layer. According to the conventional gas metal arc welding process, i.e. the MIG or CO2 welding processes, the combined use of a high welding current and a welding wire having a small diameter is known to bring about the rotation of the welding arc and the formation of an undercut along the toe of the weld metal. The purpose of the present invention is to weld a steel pipe having either a large thickness or an excellent ductility at a temperature of less than -40° C., or both. According to the present invention, the combined use of a high welding current and a wire having a small diameter is possible, by employing a gas mixture containing an inert gas as a major part thereof and CO2 as an additional part thereof as a shielding gas. In addition, by adequately selecting the wire extension, the gas metal arc welding is improved to provide the features of: deep and round penetration; stable arc formation with stiffness of the arc, and; high metal deposition rate.
23 citations
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TL;DR: In this article, the welding between aluminum alloy and steel has achieved by means of friction stirring, which is a promising way to realize a high performance joint in dissimilar metals, by optimizing the welding conditions, such as a tool configuration and a rotating speed, higher welding speed more than 1000 mm/min was achieved.
Abstract: Friction stir welding (FSW) has become an important joining process of aluminum alloys in various industries. Conventional FSW process, however, is difficult to apply to the welding in dissimilar metals. In our series of research, the welding between aluminum alloy and steel has achieved by means of friction stirring. This is a promising way to realize a high performance joint in dissimilar metals. In the present study, the weldability between 6063 and S45C by means of friction stirring was investigated. By optimizing the welding conditions, such as a tool configuration and a rotating speed, higher welding speed more than 1000 mm/min was achieved. The mechanical properties of the weld joints fabricated were evaluated with the normal tensile test and hardness test. The specimens were fractured in the portion of the lowest hardness area in aluminum alloy. In the microstructure observation with SEM, thick intermetallic compound layer on the interface region was not detected.
23 citations
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TL;DR: In this article, transparent alumina and TiAl alloy were successfully brazed at 860°C-940°C using Ag-21Cu-4.5Ti (wt%) filler metal.
23 citations
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TL;DR: In this article, a two-layered reaction layer containing Fe2Al5 and FeAl3 was observed at the welding interface, respectively, and the reaction layer has no effect on the tensile shear strength of the A5052/SPCC joint.
Abstract: Aluminum alloy A5052 and low-carbon steel (SPCC) was welded using resistance spot welding with a cover plate. The interfacial microstructure was observed using electron microscopy. A thick two-layered reaction layer contains Fe2Al5 and FeAl3was observed at the welding interface, respectively. Mechanical property analysis suggested that the reaction layer has no effect on the tensile shear strength of the A5052/SPCC joint and affects the cross tension strength of the joint.
23 citations
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16 Oct 1990
TL;DR: In this article, a convergent laser beam is projected and absorbed via a condenser lens on a joining line of the upper material (sheet) 1 to be joined and heat generation and fusion are proceeded with the filler metal (colored sheet) 3 as the main point.
Abstract: PURPOSE:To perform sound laser beam welding at high speed on thick-wall resins by using filler metal with high absorptivity of a laser beam which does not affect adversely joint performance of a joining part of the same material, etc., with high absorptivity for the joining part. CONSTITUTION:A lower material (sheet) 2 to be joined is set on a base plate and the filler metal (colored sheet) 3 which is colored material of the same quality as the upper and lower materials (sheets) 1 and 2 to be joined and has high absorptivity of the laser beam is placed thereon. A convergent laser beam 4 is projected and absorbed via a condenser lens 5 on a joining line of the upper material (sheet) 1 to be joined and heat generation and fusion are proceeded with the filler metal (colored sheet) 3 as a main point. Consequently, the filler metal (colored sheet) 3 of the upper and lower materials (sheets) 1 and 2 to be joined and the adjacent vicinity are molten partially and proceeded to joining via the cooling process.
23 citations