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柴油打桩机泵体铸件的结构如图1,材料牌号为QT600-3,化学成分w(%)为:3.6~3.7 C、2.3~2.7Si、<0.3Mn、<0.035 P、<0.015 S、0.025~0.045 Mg和0.015~0.03RE。铸件要求球化率3级,球径为6级,珠光体量大于45%,硬度180~230 HBS,铸件表面不允许出现缩孔、缩松等缺陷,要求泵压为1.0 MPa。
Diesel pile driver pump casting structure shown in Figure 1, material grade QT600-3, chemical composition w (%): 3.6 ~ 3.7 C, 2.3 ~ 2.7Si, <0.3Mn, <0.035 P, <0.015 S, 0.025 ~ 0.045 Mg and 0.015 ~ 0.03RE. Casting requirements nodularization rate of 3, ball diameter of 6, pearlite volume greater than 45%, hardness 180 ~ 230 HBS, castings are not allowed to shrink surface shrinkage, shrinkage and other defects, requiring a pump pressure of 1.0 MPa.