When Casting casts the spheroidal tube, the casting speed plays an unprecedented role. It turns out that when the casting speed is high enough, that is, the centrifugal acceleration is sufficiently large, the effect of the gravity of the molten metal is getting smaller and smaller. Gradually decrease until it is within the agreed scale of public service. In addition, the centrifugally cast ductile iron pipe fittings are condensed from the outside and inside, and with the extension of the condensing time, the thickness of the metal liquid which can move in the inner layer is gradually reduced, and finally the partial pain value is reduced. Led Flood Light,Waterproof Cob Led Flood Lights,Stadium Led Flood Lamp,Led Projector Floodlight Shenzhen You&My Electronic Technology Co., Ltd , https://www.youmyledlight.com
Another factor affecting the wall thickness difference of the casting in practice production is the beating of the mold. If the mold cannot always rotate on an axis, it will jump. Then the castings, especially the long ductile iron pipe wall thickness will be severe and uneven, the casting pipe can be tortuous during the cooling process after extruding, and the radial runout can be controlled to be below a certain value when it is severe (completely eliminated) Impossible), and the smaller the diameter of the ductile iron pipe, in addition, the plane of the roller and the metal phase, and the roughness is less than 0.3-0.5mm. In addition, the plane of the roller and the metal roll is less than R1.6um.
What should be paid attention to in practical production is the actual rotational speed of the mold. Many centrifuges are equipped with a tachometer, but often its indication value differs from the actual mold speed, especially in horizontal centrifugal tire casting. The motor is driven by the pulley-V belt-belt-roller. The outer diameter of the roller and the outer diameter of the mold are different. In addition, the roller and the mold often have a lost rotation condition, so the mold speed and The roller or pulley speed is completely different. When it is assumed that the idler and the metal type are not lost, the drive output speed is linked with the mold speed, and a corresponding curve is drawn for each centrifuge, so that the operator can conveniently grasp the rotational speed of the mold correctly.
Shandong Liaocheng Gree Pipe Industry Co., Ltd. Consulting 0635-2110446 13563518833 13361471188
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