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Start Over Author "Hisaki Watari" Journal the proceedings of the materials and processing conference
29 results on '"Hisaki Watari"'

2. Casting of Aluminum Alloy Strip Using Semisolid Condition

Author

Hisaki Watari, Shinichi Nishida, and Toshio Haga

Subjects
Materials science, chemistry, Aluminium, Casting (metalworking), Alloy, Metallurgy, engineering, chemistry.chemical_element, engineering.material
Published
2019

8. Casting of aluminum alloy strip by an unequal diameter twin roll caster

Author

Toshio Haga, Hideki Inui, Hisaki Watari, Shinji Kumai, Masaaki Ikawa, and Hiroshi Sakaguchi

Subjects
Caster, Materials science, Bending (metalworking), Bent molecular geometry, Metallurgy, Alloy, chemistry.chemical_element, engineering.material, Microstructure, chemistry, Aluminium, Casting (metalworking), engineering, Practical implications
Abstract

Purpose: of this paper is to clear the property and ability of an unequal diameter twin roll caster to cast commercial size strip. Therefore, 400mm-width strip was cast as first step. Surface-condition, microstructure and mechanical property of the strip was investigated. Design/methodology/approach: Method used in the present study was an unequal diameter twin roll caster. This method was devised to realize easy operation of the twin roll casting and increase of casting speed. Findings: are that 400-width-strip of 3084, 5182 and 6022 could be cast at speed of 20 m/min. This strip was about 4 mm-thick. There were some defects on the surface. As cast strip could be cold-rolled down to sheet of 1 mm-thick. 180 degrees bending test was operated on the 6022 sheet after T4 heat treatment. Crack did not occurred at the outer surface when strip was bent at width-direction. Research limitations/implications: is that the quantity of the melt was 21kg and investigation of the properties was not enough for practical use. The larger weight of melt must be cast for production. Practical implications: are as below. The 400mm-width strip can be cast easily by the unequal diameter twin roll caster. This caster can be adapted to 3083, 5182 and 6022. Originality/value: as below. The economy sheet with 400mm width can be produced by the unequal diameter twin roll caster. 3083, 5182 and 6022 can be cast at the speed of 20m/min. The thickness of the strip was about 4mm.

Published
2004

9. Twin roll casting of 6111 alloy strip

Author

Noriya Ohama, Toshio Haga, Masaaki Ikawa, Shinji Kumai, Hisaki Watari, and Kaname Deguchi

Subjects
Strip casting, Materials science, Casting (metalworking), Metallurgy, Alloy, engineering, engineering.material
Published
2004

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