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“东方红54型”拖拉机履带扳,钢号为Mn13。在大量或成批生产时,为了与我厂电炉的生产能力(装入量2.5吨)相适应,决定采用脱箱造型平板叠箱底注法(图1)。砂型为脱箱造型,砂型经表面干燥后在六通的平板上进行叠箱,砂型外面套上套箱,钢水经中注管分六路进入砂型。脱箱造型平板叠箱底注法有下列优点:①砂箱消耗少;②单位造型面积产量高;③烧注时间短,钢水温度容易控制;④陶塞杆启闭次数减少——2.4吨钢水启闭3次即可烧完,漏包事故可以消除;⑤烧冒口少,工艺出品率高(68.5%)。
“Dongfanghong 54” tractor crawler pull, steel number Mn13. In mass or batch production, in order to adapt to the capacity of our electric furnace (2.5 tons capacity), we decided to adopt the flask-type flat-bottom stacker (Figure 1). The sand mold is unboxing. The sand mold is dried on the six-way flat plate and the sand mold is set on the flat plate. The molten steel is injected into the sand mold through the middle injection pipe. Bottom molding flat stacker bottom note has the following advantages: ① less sand box consumption; ② unit shape yield high; ③ burning a short time, easy to control the temperature of molten steel; ④ Cypriot rod opening and closing times to reduce - 2.4 tons of molten steel Kai Closed 3 times to burn, leakage accident can be eliminated; ⑤ less burning riser, craft production rate (68.5%).