What are the manual molding methods of sand casting?
2) three: three box shape cast by box shape, form three. The medium height shall be adapted to the spacing of the two parting surfaces of the casting. Three cases of other labor. The utility model is mainly suitable for castings with single and small batch production with two parting surfaces.Turn left and turn right |3) flaskless molding mainly adopts the sand box to other activities, in the mold closing, the sand box for re emergence, other. A sand box can produce many mold. When the metal is poured, in order to prevent the wrong shape, the sand should be filled around the mold, or the box can be put on the casting. Often used in the production of small castings, because the sand box without box, so the sand box is generally less than 400mm.4) other: pit pit molding is the use of floor sand bed as the mold box. Large castings need to be laid under the sand bed with coke and buried in the air pipe so as to air the gas when pouring.Turn left and turn right |5) core molding: core molding is combined into a plurality of sand core mold, without sand box. The utility model can improve the casting accuracy, but the cost is high. Applicable to the casting mass production with complex shape.
Two, manual molding method:1, according to the different characteristics of sand mold:Two, three box styling, box shape flaskless molding pit moulding, core molding;2, according to the different features of the appearance:The whole mold, parting molding, sand modeling, fake box modeling, live block modeling, scraper modeling.1) two box modelling: two box modelling is the most basic method of molding, the casting is made up of paired up and down type, and the operation is simple. Suitable for all kinds of production batch and casting of various sizes.
First, the definition of manual modelingHand modeling is a complete manual or manual tool to complete the modeling process. The manual modeling of flexible operation, wide adaptability, simple manufacturing process, low cost, but the poor quality of casting, low productivity, high labor intensity, high technical requirement, so the manual modeling is mainly used for small batch production, especially heavy and complicated castings.
6) the whole mold molding: the shape of the whole mold is integral, the parting surface is flat, the casting cavity is all in the half mold, and its shape is simple, the casting will not produce wrong type defects. A casting suitable for casting with the largest cross section at one end and flat surface. ?Turn left and turn right |7) dig sand modeling: the shape of sand excavation is overall, but the casting parting surface is curved surface. For the convenience of the mould, modeling by hand digging up the sand, the die block modeling work, low productivity, high technical level of workers. A single piece or a small batch of castings used for parting planes.Turn left and turn right |8) fake box molding is to overcome the sand digging molding sand defects, in the shape of pre made a bottom tire (that is, false box), and then in the bottom tire on the lower box, because the bottom tire does not participate in pouring, it is called false box. Compared with sand digging molding, the operation is simple and the parting surface is neat. The utility model is suitable for castings needing sand digging in batch production. ?Turn left and turn right |9) die molding: parting molding is the shape of the largest section along the two halves, the cavity is located in the upper and lower two sand box, the shape is simple and labor-saving. A casting used in the middle of the largest cross section.Turn left and turn right |10) live block modeling: Live block modeling is in modeling the small convex die casting hinder the rib etc. these parts are made into activities (i.e. live block). When the die is started, the main body shape is taken out first, and then the movable block is removed from the side. The modeling is time-consuming and the workers' technical level is high. Mainly used for single and small batch production, with protruding parts, it is difficult to die casting. ?Turn left and turn right |
