CONTINUOUS TYPE HEATING FURNACE

• Main Author: ONO TOMIAKI
• Format: Patent
• Language: English
• Published: 03.03.1992
• Subjects: CHEMISTRY; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS; METALLURGY; METALLURGY OF IRON; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS

PURPOSE:To develop a heating furnace, which can easily deal with peak at the increased production, and with small lot and special steel, and can do with small consumption of fuel by constituting the heating furnace for various kinds of steel slabs with combination of a large scaled heating furnace and a small scaled heating furnace. CONSTITUTION:The continuously cast slab or the ordinary slab is directly charged the heating furnace without cooling, and after heating to hot rolling temp., slab is continuously taken out and hot-rolling is executed. In this case, the heating furnace is constituted with the combination parallelly setting a full furnace 1 having high heating capacity corresponding to the basic production capacity and a small scaled half furnace 2 having effective furnace length at 40 - 60% or 60 - 80% of the effective furnace length of the furnace 1. At the time of dealing with the peak production quantity for hot rolling, the slabs are charged from slab yards 3, 4 at the ratio of 2 : 1 or 3 : 2 into the full furnace 1 and the half furnace 2, and heated. In the case of dealing with a small lot and a special steel, these are charged to the half furnace 2 and heated, and during this process, the full furnace 1 ordinarily operated. The heating furnace composed of the full furnace and the half furnace can be extremely effectively utilized for heating of the slab for hot-rolling.