Phenomenon analysis of molten brazing filler metal and extraction of brazing factor by In-situ observation during brazing process

2022 Fiscal Year Final Research Report

• Project/Area Number: 20K05174
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 26050:Material processing and microstructure control-related
• Research Institution: Tokai University
• Principal Investigator: Miyazawa Yasuyuki 東海大学, 工学部, 教授 (20256168)
• Project Period (FY): 2020-04-01 – 2023-03-31
• Keywords: ろう付 / ろう材 / その場観察 / 試験片

Outline of Final Research Achievements

Brazing is an important technology for fabricating field. Wetting / Spreading behavior and immersion to the brazing joint gap of a molten brazing filler metal influenced a brazing-ability of joint. On the other hand, it is very difficult that wetting and immersion behavior are investigated, because of no observation method by naked eyes directly.
So in this study, "In-suit observation method" by using "a New-type Furnace" and "a New Joint Design Specimen" is developed.

Free Research Field

接合科学

Academic Significance and Societal Importance of the Research Achievements

ろう付は重要な産業基盤技術であり、モノづくり製造業分野には、欠かせない技術である。一方、ろう付時の溶融ろう材のぬれ・広がり・母材との界面反応現象などを詳細に解析し、相互の関係を明らかにして、健全なろう付部を得る方法は確立されていない。
本研究では、試験片形状を工夫する事により、溶融ろう材のぬれ・広がりとすき間への浸透現象を詳細に解析し、ろう付部に発生する諸現象を詳細に解析し、健全なろう付部を得る指針を得る事ができた。