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选用STMMA(聚苯乙烯甲基丙烯酸甲酯)泡沫珠粒模样,降低铸钢件表面增碳量,成型珠粒预发密度控制在(18±0.5)g/L,预发泡温度96~105℃,预发泡筒内压力控制在3.8×104~4.2×104Pa,预发泡时间70~75 s;使用淋涂泵淋涂改进后的涂料,分两次淋涂,并改进烘烤工艺;埋箱造型震实参数选取预加砂高度为250 mm;采用水平和垂直方向震实力,总震实时间不超过130 s;利用带轨道电动行走火焰切割机切割浇冒口等工艺,生产出品质合格的装载机拉杆头铸钢件。
Select the STMMA (polystyrene methyl methacrylate) foam beads to reduce the amount of carbon added on the surface of the cast steel. The preformed density of the shaped beads is controlled at (18 ± 0.5) g / L, the pre-foaming temperature is 96 to 105 ℃, pre-foam tube pressure control in the 3.8 × 104 ~ 4.2 × 104Pa, pre-foaming time of 70 ~ 75 s; using a shower coating leaching improved coating, shower coating in two and improve the baking process; The selection of prefabricated sandblasting molding parameters is 250 mm; the horizontal and vertical seismic strength is used, the total seismic time does not exceed 130 s; the use of electric walking flame cutting machine cutting the riser and other processes to produce quality Qualified loader rod head cast steel.