The shape of bearing seat

1) Determination of manufacturing process method

Analysis of casting mechanism and casting process, bearing seat is used for clamping bearing, so as to support the shaft and the parts on the shaft,

The weight of the casting part is about 10Kg

The part material is HT200

Outline size (215X80X146) mm

Production program: Mass production

2) Because the casting parts are smaller, it is appropriate to use the wet type of veil and back yarn

3) Modeling method: whole mold, live block, two-box model modeling

4) Determine the parting surface

With the whole shape of the bearing seat parting surface, and wood as the sand core of 62.5, and basically on a plane, so choose the whole shape of the bearing as the parting surface, so that the whole cavity in the lower type, so that the parting is also convenient for security pouring riser.

5) Determine the position of pouring riser

The casting part is HT200, the volume shrinkage rate is small, but the casting part is a thick solid part, so we should pay attention to the occurrence of shrinkage hole defects, so the position and direction of the introduction of the inner runner is very important, according to the structural characteristics of the casting part, with the principle of directional solidification, the inner runner should be introduced from both ends of the base side, so as to prevent the sand mold of 62.5. Using the gate against the flange gap, not only can reduce the contact hot section between the gate and the casting part, but also can avoid the overheating of the middle thick part, and can shorten the solidification time, which is conducive to getting qualified casting parts. In addition, because the flange gate feeding effect is good, so the casting part does not need to set the feeding riser, in order to prevent the generation of pores, You can set a Φ8 - Φ10mm air outlet position in the middle side of the top.