METHOD OF CONFINING MOLTEN METAL IN ROTARY FRICTION WELDING

To provide a method of confining molten metal by which decrease in bonding strength is prevented, due to a void which is generated in a joint organization in such a manner that molten metal is discharged from an empty space to the exterior in rotary friction welding applicable for large-scale joinin...

Full description

Saved in:
Bibliographic Details
Main Author KAMIYA KOJI
Format Patent
LanguageEnglish
Japanese
Published 30.01.2020
Subjects
CLADDING OR PLATING BY SOLDERING OR WELDING
CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING
MACHINE TOOLS
METAL-WORKING NOT OTHERWISE PROVIDED FOR
PERFORMING OPERATIONS
SOLDERING OR UNSOLDERING
TRANSPORTING
WELDING
WORKING BY LASER BEAM
Online AccessGet full text

Cover

More Information
Summary:To provide a method of confining molten metal by which decrease in bonding strength is prevented, due to a void which is generated in a joint organization in such a manner that molten metal is discharged from an empty space to the exterior in rotary friction welding applicable for large-scale joining of steel materials with a relatively small mechanism in order to join steel materials which constitute a steel structure frame such as a pillar and a beam of a building steel structure.SOLUTION: According to this method, in rotary friction welding such that an empty space 50, which straddles an end face 11 of a first steel material 10 and an end face 21 of a second steel material 20, is processed, a joint metal 40 is rotated around a rotary shaft 71 to cause friction, a material organization near a rotary friction surface 62 is molten by use of frictional heat to produce a molten metal 80, and is integrated with an organization near a gap 61, thereby joining the first steel material 10 and the second steel material 20 via the joint metal 40, a molten metal confining device 300 is installed on the joint metal 40, and a ring part reverse face is placed on a surface 12 of the first steel material and a surface 22 of the second steel material.SELECTED DRAWING: Figure 3 【課題】建築鋼構造の柱や梁などの鋼構造骨組を構成する鋼材の接合のため、比較的小さな機構で、大規模な鋼材の接合に適用できる回転摩擦溶接において、溶融金属が空所から外部へ吐出して接合組織の中に生ずる空隙による接合強度の低下を防止する溶融金属閉じ込め方法を提供する。【解決手段】第１の鋼材１０の端面１１と第２の鋼材２０の端面２１とに跨る空所５０を加工し、接合金属４０を回転軸７１周りに回転させて摩擦を生ぜしめ、摩擦熱を利用して回転摩擦面６２近傍の材料組織を溶融させて溶融金属８０を生成し、隙間６１近傍の組織と一体化させることにより接合金属４０を介して第１の鋼材１０と第２の鋼材２０とを接合する回転摩擦溶接において、溶融金属閉じ込め装置３００を接合金属４０に装着し、リング部裏面を第１の鋼材の表面１２と第２の鋼材の表面２２とに載置する。【選択図】図３
Bibliography:Application Number: JP20180141899