步进式加热炉--外文文献

1 introduction

1.1 Step into the furnace

1.1.1 Step into the furnace overview

As western capitalist society in the 18 th century since the industrial revolution, the development of the society entered a new speed. According to the statistics in the industrial revolution in the world before the usage of the per capita steel is less than 5 kg. However, now of the social development to the ownership for 418 kg per capita steel. More and more steel structure appear in socialist construction. So steel has been now the main material of social development. And even once the shortage of supply. This prompted the steel industry is growing rapidly. To the year 2007, the world GangTieLiang has reached nearly nine hundred million tons. But because technology Co., LTD, add people to use more widely, steel emergence of steel more demand. So the steel and iron the smelting technology constantly improved.

The first step in 1967 a beam furnace put into production. China 1979 years of production walking beam furnace is 32.5 meters long, production capacity of 270 tons per hour. Walking beam furnace stove than push steel have many advantages, thus become the first choice of rolling mills new furnace type. The scale of the steel rolling broadband is large development, walking beam furnace is one of the characteristics of furnace long from push steel, and can adapt to limit the length of mill production growth hour of the situation. Beijing steel design research institute nearly 20 years design of production more than 40 buildings stepping furnace, already pervaded strip, finances, great wire, strip steel, seamless tube, KaiPi, forging and other steel and steel belt factory, in 1994 have put in taigang, meishan strip factory of walking beam furnace rated output, respectively for 180 t/h and 280 t/h, chongqing iron and steel institute of design for pangang during the 1450 factory design walking beam furnace, rated output for 150 t/h, also put into production in 1992.

Early heating furnace interior is a continuous type push with steel machine, it is the role of ingot or billet in turn push in charging. In the end the material, the furnace of steel machine can push will heating good from the other end of the billet reheating furnace out. In side out of the furnace of material, push the steel billet machine will be launched to the material position, again by the steel ingot machine will be out; Now most use is stepping type mobile device. Step into the furnace heating temperature even, heating time fast, high output, and big production flexibility and may, when necessary, will furnace empty blank. Heated, the blank of the surface of the water pipes under small black imprint, blank temperature even, heating efficiency is high. Heating special steel is, can be met on the surface quality of the blank (oxidation, decarburization, scratch, etc) height requirements; Heating large panel, as the slab temperature even, to reduce the thickness different rolling. So now stepping type