Heat treatment is applied to soften the material, and then rolling is repeated again.
This technology is a precision rolling process that improves strength and creates a good surface by applying cold rolling, which our company specializes in, to materials that have been softened through heat treatment. Various metals undergo heat treatments such as annealing, solution treatment, and aging treatment in-house during the rolling process as needed. Additionally, our staff, who inherit the technology cultivated over many years in titanium foil spacers, produces materials with a thickness accuracy of ±2% or less. This processing technology is adopted for reference plates of measuring instruments, and we meet the requirements for special tolerance products with a thickness accuracy of 1% for beryllium copper alloys and pure iron. *For more details, please download the PDF or feel free to contact us.
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【Others】 ■Thickness: 0.001 to 1.0mm ■Tolerance: Standard products have a thickness tolerance of ±10% ■Size: Width: 3 to 120mm, Length: 3 to 400mm *For more details, please download the PDF or feel free to contact us.
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In 1947, Rikazai focused on foil, which held infinite possibilities as a metal material, and started a rolling business to commercialize it. Our metal foil has been used as spacers for magnetic heads in tape recorders, as well as in various applications such as electrical resistance films, burst membranes, and speaker diaphragms, responding to the diverse needs of the industry. Currently, we are capable of producing high-quality foil with a thickness of up to 0.3μm (3 micrometers). The meticulous finishing of each metal foil through precision ultra-thin rolling can be described as a delicate "artisan's skill," treating metal as if it were a living entity. So, how can such ultra-thin foil be produced? Kanazawa gold leaf is made by repeatedly hammering it until it is spread thin and wide, much like rolling out pie dough. While it does become quite thin, it is not uniform overall and is primarily used for decorative purposes, such as being applied to Buddhist statues. In contrast, the typical precision rolling method for metals involves passing the material between upper and lower rolling rolls, where the pressure from the rolls stretches it. This process can be done cold or hot, and various techniques are required depending on the type and amount of metal and the scale of rolling, making it a world of "skills" backed by years of experience and expertise.