SU141266A1 - Method of making casting molds - Google Patents

Description

A method of making casting molds is proposed, in which the accuracy of castings is improved and the mold design is simplified (no pushers or ejection of the produced models are required, then ready rods are separated from the box wall by melting the thin shell-models).

For this, the front surfaces of the models and core pins are reinforced with a thin layer of the melted mixture. This layer is applied 1 then a refractory liquid coating, which is hardened by conventional means.

FIG. 1 shows the shape in the assembly of rods obtained. ; io reinforced melted models and cavities with the reinforced melted wall and; in FIG. 2 - reinforced cavity to obtain a rod-half C; in fig. 3 - mold model for obtaining cavity with reinforced melted walls.

The inner core / and the core of the half-mold assembly 2 form cavities for pouring the sleeves. They are burned separately or assembled in flask 3, being pressed against one of the walls of the flask with 4 and fraction 5. The reinforced cavity for obtaining the rod of semi-mold 5 with reinforcement model 7 is assembled on plate 8 with frame 9. A thin layer of melted mixture.

The mold consists of two halves, one of which is reinforcement, and the second is model 10; when connected, they form a thin-walled cavity. Frames // and 12 are constraints that fix the position of the mold. Hole 13 (fig. 2) serves to fill the cavity between the mold, the model n, and the cavity being melted.

After the melted shell is formed and the model is removed, a refractory multilayer coating is applied onto the surface of the surface using the same technology as in the casting of the melted models.

No. 141266-2 acrylics thin refractory layers of the hardening mixture melts the melted shell model and the core-mold is ready for assembly into a mold.

The proposed method makes it possible to obtain precise split shapes and rods with the use of a rational gating system and to manufacture various models by means of separate inserts and fittings. This method can be used in the production of large castings and cast small batches.

Subject invention

A method of making casting molds by assembling them from cores and half-molds using melted masses. exe and ch that, in order to increase the accuracy of the castings and simplify the design of the mold, core bars are placed in the mounting frames and a layer of melted mass is applied to the front surface of the NX, followed by the formation of a multilayer coating applied to it by conventional methods.

.PRINT

On page 1, in line 13, the top of the half-coupling is printed on top; half-molds should be read.

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