To provide a glass lubricant for hot extrusion with which glass remaining in the material to be worked after hot extrusion and glass stuck to the inside of a container can be efficiently removed.
(1) Disclosed is a glass lubricant for hot extrusion having a linear expansion coefficient of 8010-7 (cm/cm/C) or below. (2) Disclosed is a glass lubricant for hot extrusion used as a front lubricant and/or an inside lubricant and having a linear expansion coefficient of 8010-7 (cm/cm/C) or below, and whose viscosity at 1,000 to 1,250C is 102.5 to 104 poise. (3) Disclosed is a glass lubricant for hot extrusion used as a front lubricant and having a linear expansion coefficient of 8010-7 (cm/cm/C) or below, and whose viscosity at 1,000 to 1,250C is 100 to 102.5 poise. (4) Disclosed are a hot extrusion method for a metallic material using the lubricant, and a production method suitably applied to a metal tube, particularly, to a seamless tube.
SHIMODA KAZUMUNE
HIDAKA YASUYOSHI
MURAKAMI KOSUKE
TAJIMA JUNPEI
| JPH11123443A | 1999-05-11 | |||
| JPS5058110A | 1975-05-20 | |||
| JPS54122318A | 1979-09-21 |