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我厂是生产气缸套产量较大厂家之一,年产缸套毛坯110万件,12000多吨,年铁屑量6000～7000吨,铁屑的回收以冷压块为主,自78年以来,铸工车间一直使用二台中央送风冲天炉,雨淋式外水冷,金属炉料中加入25～30％的冷压块。冷压块加火炉内,易碰碎或砸碎,碎铁屑在风力的作用下,吹向炉壁,在高温下烧结成一体,挂在炉胆下沿的炉壁上,如图1所示,严重时挂铁厚度达100～150mm,高1000～1500mm,使熔化率下降,架料、氧化次数增多,只好停产,清理挂铁,用电焊机割铁,要用许多焊条,既影响了生产,又浪费了材料,且雨淋式冲天炉由于冷却水量不均匀,造成炉衬侵蚀不同,侵蚀严重的部位,易造成挂
Our factory is one of the largest producers of cylinder liner production, with an annual output of 1.1 million pieces of liner blank, more than 12,000 tons of iron filings and 6000-7,000 tons of scrap iron annually. , Casting workshop has been using two central air cupola, rain outside water, metal charge by adding 25 to 30% of the cold block. Cold block plus the furnace, easy to crush or smash, crushed iron in the wind under the action of blowing to the furnace wall, sintered at high temperature into one, hanging in the furnace along the furnace wall, as shown in Figure 1 In severe cases, the thickness of the hanging iron is up to 100-150mm and the height is 1000-1500mm, which leads to the decrease of the melting rate and the increase of the feeding and oxidation times. Production, but also a waste of materials, and rain cupola due to uneven cooling water, resulting in erosion of different linings, severe erosion of the site, easily lead to hang