Patent ID: 7090488
Filing Date: 2006-08-15
Classification: C21D,F27B,F27D

Abstract:
1. A heat treatment furnace wherein a heating zone ( 4 ), a cooling zone ( 5 ), and a quenching zone ( 6 ) are provided inside a linear furnace body in this order, the heating zone ( 4 ), the cooling zone ( 5 ), and the quenching zone ( 6 ) being separated by partition doors ( 2 , 3 ), conveying means of a work (W) being a tray pusher ( 7 ) in the heating zone ( 4 ), conveying means of the work (W) comprising roller hearths ( 8 , 9 ) in the cooling zone ( 5 ) and the quenching zone ( 6 ), the roller hearths ( 8 , 9 ) being independently driven, wherein a front end of the roller hearth ( wherein the front end of the roller hearth (