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    • 7. 发明授权
    • Conveying roll, and hearth roll in a continuous annealing furnace
    • 输送辊和炉床辊在连续退火炉中
    • US08328705B2
    • 2012-12-11
    • US12305645
    • 2006-07-12
    • Yasushi Kurisu
    • Yasushi Kurisu
    • F16C13/00
    • C23C2/003C21D9/56C23C4/02C23C4/06F16C13/00
    • The present invention provides conveying rolls and hearth rolls in a continuous annealing furnace for producing steel sheet having flame sprayed coatings on their surfaces wherein the flame sprayed coatings are comprised of cermet having a ceramic ingredient content of 80 vol % or less or a heat resistant alloy, the flame sprayed coatings have oxide layers comprised of one or more of a flame sprayed metal, Cr, Si, Zr, or Al, and a ratio R/R1 of the roughness parameter R of the surface of the oxide layer measured based on JIS B0633 setting the cutoff value at an initial value and a roughness parameter R′ measured setting the cutoff value at 1/10 of the initial value is 4 or more.
    • 本发明在连续退火炉中提供输送辊和炉床,用于生产在其表面上具有火焰喷涂层的钢板,其中火焰喷涂的涂层由陶瓷成分含量为80体积%以下的金属陶瓷或耐热合金 火焰喷涂涂层具有由火焰喷涂金属,Cr,Si,Zr或Al中的一种或多种构成的氧化物层,并且氧化物层的表面的粗糙度参数R的比R / R1基于JIS 将截止值设定为初始值的B0633和将截止值设定为初始值的1/10的粗糙度参数R'为4以上。