WELDING METHOD AND WELDED ARTICLE

• Main Author: LIN DECHAO
• Format: Patent
• Language: English; Japanese
• Published: 25.10.2018
• Subjects: AIR INTAKES FOR JET-PROPULSION PLANTS; ALLOYS; BLASTING; CHEMISTRY; CLADDING OR PLATING BY SOLDERING OR WELDING; COMBUSTION ENGINES; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; ENGINE PLANTS IN GENERAL; FERROUS OR NON-FERROUS ALLOYS; GAS-TURBINE PLANTS; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; MACHINE TOOLS; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; METAL-WORKING NOT OTHERWISE PROVIDED FOR; METALLURGY; NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES; PERFORMING OPERATIONS; SOLDERING OR UNSOLDERING; STEAM ENGINES; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS; WEAPONS; WELDING; WORKING BY LASER BEAM

PROBLEM TO BE SOLVED: To provide a welding method and a welded article.SOLUTION: A gap on a substrate (10) is filled by welding filling beads by way of arc scanning with use of an arc welder. The gap is defined by weld beads on the substrate (10). Weld beads (12) are not overlapped on one another. A welded article includes the substrate (10) containing a super alloy with crack tendency, the weld beads, and the filling beads welded onto the substrate (10). There is no micro crack and no macro crack on a thermal effect region of the filling bead, the weld bead, and the substrate (10). A welding method can include a step at which the weld beads 12 are welded to the substrate 10, and a step at which the filling beads 16 are welded onto the substrate 10 by use of an arc welder while performing arc scan. The filling beads (16) fill a gap (14) between an adjacent pair of the weld beads (12). The filling beads (16) are welded in a discontinuous order.SELECTED DRAWING: Figure 1 【課題】溶接の方法および溶接された物品を提供する。【解決手段】アーク溶接機を用いたアーク走査により充填ビードを溶接して、基板（１０）上のギャップを充填する。ギャップは、基板（１０）上の溶接ビードによって画定される。溶接ビード（１２）は重なり合わない。溶接された物品は、クラック傾向のある超合金を含む基板（１０）と、溶接ビードと、基板（１０）上に溶接された充填ビードと、を含む。充填ビード、溶接ビード、および基板（１０）の熱影響領域は、マイクロクラックがなく、かつマクロクラックがない。溶接の方法は、基板１０上に溶接ビード１２を溶接するステップと、アーク走査しながらアーク溶接機を用いて基板１０上に充填ビード１６を溶接するステップと、を含むことができる。充填ビード（１６）は、溶接ビード（１２）の隣接する対の間のギャップ（１４）を充填する。充填ビード（１６）は、不連続な順序で溶接される。【選択図】図１