塑性と加工
Online ISSN : 1882-0166
Print ISSN : 0038-1586
ISSN-L : 0038-1586
論文
純チタン板の深絞り成形用潤滑剤の開発
山下 実後藤 學林 真人
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2006 年 47 巻 544 号 p. 389-393

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The methods for the prevention of fracturing due to seizure on the die surface in the press-forming of pure titanium sheets are experimentally investigated by applying various kinds of lubricants. First, a commercial liquid that includes carbon particles that is used for masking in the spray coating of metal is found to be a good antiseizure lubricant even when common tool steel (SKD11) is used as the die material. Then, new lubricants are contrived. Carbon-graphite and/or carbon-black are added to a press-forming oil or a liquid that includes glycerin and/or water in various mixing ratios. The die material is tungsten carbide (G5) or tool steel (SKD11). Press-forming oil with these additives is found to be inappropriate for performing consecutive forming. However, glycerin with carbon-graphite is found to be effective for forming with a tungsten carbide die. Water and glycerin with larger mixing ratios of carbon-graphite and carbon-black also allow us to perform the drawing process consecutively even when common tool steel (SKD11) is used. This lubricant is also confirmed to be appropriate for a consecutive 4-stage drawing process.

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© 2006 一般社団法人 日本塑性加工学会
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