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    • 3. 发明授权
    • Apparatus and method for billet heating and solid stretch forming
    • 用于加热和固体拉伸成形的装置和方法
    • US3684258A
    • 1972-08-15
    • US3684258D
    • 1970-10-08
    • COFFMAN PAUL MHERBERT G JOHNSON
    • COFFMAN PAUL MJOHNSON HERBERT G
    • B29B13/02F27B9/14
    • B29B13/02
    • This application discloses heating apparatus and method of heating employing longitudinally extending heating plates which maintain contact proximity with both surfaces of a line of billets at all times, i.e., actual surface contact with both sides of the billets or full surface contact with the lower side and close proximity at the upper side for engaging projecting portions if warped or burred, the plates being provided with a coating of a material having a low coefficient of friction, such as a fluorocarbon polymer, and means for advancing the line of billets along between the heating plates while the space between plates is maintained constant.
    • 本申请公开了采用纵向延伸的加热板的加热装置和加热方法,该加热板始终保持与一条坯料线的两个表面的接触接近,即,与坯料两侧的实际表面接触或与下侧完全表面接触; 在上侧接近用于接合突起部分(如果发生扭曲或者毛刺),则该板被提供有具有低摩擦系数的材料的涂层,例如碳氟聚合物,以及用于在加热之间推进坯料线 而板之间的空间保持恒定。