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1) determine the manufacturing process method
Casting mechanism and casting process analysis, the bearing seat is used for clamping a bearing, and thus on the shaft and parts on the shaft plays a supporting role,
The casting weight is about 10Kg
Parts and materials for the HT200
Outline dimensions of (215X80X146) mm
Production program: mass production
2) for casting small, should adopt the veil, wet type back yarn and
3) modeling method: the whole mould, active block, two box models
4) type determination
In order to bearing the entire contour the parting surface, and using wood as the sand core with a diameter of 62.5 mm, and basically are in one plane, so the choice of bearing of the whole shape as the parting surface, so that the whole cavity in type, so typing also facilitate security riser.
5) to determine the location of the riser
The casting of HT200, volume shrinkage of small, but the casting thick solid parts, so attention should be paid to the shrinkage defects occur, so the position and direction of the ingate introduced very important, according to the structure character of casting, using directional solidification principle, both ends of the ingate should base on one side of the introduction, it can also avoid damaging the phi 62.5 sand, using counter pressure edge slot gate, which can reduce the thermal contact between the gate and casting of the festival, but also can avoid the middle thick part of overheating, and can shorten coagulation time, conducive to get qualified casting, in addition, due to the pressure side gate good feeding effect, the casting parts do not need to set the riser, to prevent porosity formation, can be in partial edge position top is arranged in the middle of a Phi bleeded riser position 8 - Phi 10mm.