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目前,热处理行业在井式炉、箱式炉以及盐浴炉中使用的各种吊、挂、夹具,一般用A3钢板或价格昂贵的镍铬合金钢板制成。这些挂具易变形开裂,抗氧化差,成本高,寿命短。为了解决挂具使用寿命问题,我们研制了稀土耐热铸钢吊挂具。 1.稀土对铸钢性能的影响 (1)稀土对钢的铸造性能的影响经稀土处理后的钢水,流动性得到显著改善。各种铸造碳素钢在同样的含碳量和同样的浇注温度条件下,加入0.2～0.3%重稀土硅铁合金,其螺旋线长度可增加100～120mm。热处理用的吊挂具大部分都是薄壁件,
Currently, the heat treatment industry in pit furnace, box furnace and salt bath furnace used in a variety of hanging, hanging, fixture, usually with A3 steel or expensive nickel-chromium alloy steel plate. These hanging deformation deformable, poor oxidation resistance, high cost, short life expectancy. In order to solve the problem of the service life of the hanger, we have developed a rare earth heat-resistant steel hanger. 1. Rare Earth on the performance of cast steel (1) the impact of rare earth on the casting of steel Rare earth treated molten steel, liquidity has been significantly improved. Various cast carbon steel with the same carbon content and the same pouring temperature conditions, adding 0.2 ~ 0.3% heavy rare earth ferrosilicon alloy, the helix length can be increased by 100 ~ 120mm. Most of the hangers used for heat treatment are thin-walled pieces,