SU430938A1 - DEVICE FOR ASSEMBLY OF MODELS IN BLOCKS - Google Patents

Description

one

The known device for assembling models from a fusible model material into blocks, made in the form of a hollow metal rod with a spherical end and a holder, cannot be used in the manufacture of ceramic molds by electrophoresis, since the thickness and density of the sludge depends on the stress gradient determined by distance between the cathode and the anode, the magnitude of the external voltage and the electrical conductivity of the material of the anode and cathode. When assembling models into blocks using a known device, the difference in the voltage gradient along the height of the sink and along the radius (from the center of the sink to the periphery) leads to different sediment thickness, and in some cases to the termination of the deposition process in certain areas model block at the time of manufacture of software forms for melted models.

In order to equalize the voltage gradient and create conditions for the uniform deposition of the dispersed phase, the ohmic resistance of the conductive coating is reduced by making separate parts of the stack of metal.

The proposed design of the device for frilling models into blocks allows creating conditions for obtaining a uniform draft.

The drawing shows the proposed device with a cut then AA.

The device consists of a hollow rod 1 with a holder 2. The rod is divided by longitudinal slits filled with model material 3 into individual petals 4. The number of slits depends on the number of models assembled around the circumference of the Rod. The width of the groove is equal to the largest cross section of the feeder. The rod has a spherical end 5.

At the spherical end portion, the distance between the slits is 1.5-2 mm. This is necessary to give the petals some freedom of movement in the radial direction.

To fill the slits with the model material, the core is inserted into the mold. Then assemble the model in blocks by soldering.

Subject invention

A device for assembling models into blocks in the production of molten on produced models, made in the form of a hollow metal rod with a spherical end and a holder, characterized in that, in order to equalize the voltage gradient and to obtain a uniform sediment on the surface of the block in the electrophoretic method

making the molds, the core is divided by longitudinal slits filled with the model material, into separate petals, the distance between which in the spherical end section is 1.5-2 mm.