SU1452659A1 - Apparatus for compacting articles from powder by applying fluid pressure - Google Patents

Abstract

The invention relates to powder metallurgy, in particular, to devices for the hydrostatic pressing of articles from powder, preferably completely. The purpose of the invention is to improve the quality of products, increase the productivity of the pressing process, reduce labor intensity when extracting products from the shell, and increase the service life of the shell. The device consists of container 1, plugs 2 and 3 with sealing elements and grooves 4. Supporting shells 5 and 6 and elastic sheath 7 divides the container into three cavities. Intermediate cavity 8 is for powder. During pressing, the pressure from the cavities adjacent to the cavity 8 acts on the powders, sealing it according to a given law. All cavities are connected to a source of fluid, so that during pressurization, the fluid is injected into cavity 8 and separates the press shell, thereby facilitating the depressing and increasing productivity. 1 il. i (L i4 01 tsO a el; o

Description

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The invention relates to powder metallurgy, in particular, to devices for hydrostatic pressing of articles from powder, preferably hollow.

The purpose of the invention is to improve the quality of the products, to increase the productivity of the pressing process, to reduce the labor intensity when extracting products from the shell, and to increase the service life of the shell.

The drawing shows a diagram of the device.

The device consists of a working chamber formed by container 1, plugs 2 and 3 with sealing elements and grooves D in which support 5 of the shell 5 and with holes and an elastic annular shell 7 are located, which divide the working chamber into three cavities 8-10, Cavity 8 is intended for powder. The source II of the liquid supply is connected to the cavities 8 to 10 and is separated from the cavity 8 by a valve 12 and an end shape.

Yu1DIM will seal with a ring 13,

The device works as follows

A cork 3 with sealing elements is installed in the container 1, an elastic sheath 7 is placed in the grooves 4 and the sheath is supported 6 and 5 with holes, powder is poured into the cavity 8 and the container is closed with a stopper 2 with sealing elements. By means of the source 11, the supply of fluid to the cavities 9 and 10 creates pressure, which, through the openings of the supporting shells 5 and 6, acts on the elastic sheath 7, compacted the powder. Valve 12 is closed. Plugs 2 and 3 are fastened in any known manner. After completion of the sealing process, the valve 12 opens, the fluid from the source 11 acts on the forming sealing ring 13, which performs additional shaping of the powder at the end and opens the flow of fluid into the cavity 8 and after closing the valve 12 and depressurizing the cavities 9 and 10 completely separates the elastic sheath 7 from the product. At the same time, a gradual depressurization in cavities 9 and 10 ensures the gradual separation of the elastic membrane

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7 from the product without tears. After the end of the process, the pressure in the cavity 8 is released, sample 2 is removed and the finished product is repeated and the process is repeated.

Thus, the separation of the working chamber into at least three cavities by elastic and supporting shells with holes and fixing the slots in the plugs of the elastic shells by supporting shells allows pressure to be applied to the powder to be compacted from different sides at the same time poroiku, this increases the uniform distribution of density and properties, as well as the quality of the products. The connection of all cavities with a source of fluid supply allows them to create fluid pressure and thereby produce a pressing process. The end forming sealing ring allows for opening of the product at the ends when opening the valve and prevents the powder from flowing out into the priorec zones at the moment of pressing the powder product. When the valve is opened, the fluid entering the cavity for the powder flows through the channels of the porous product, acts on the elastic shells, separates them from the powder product, thereby reducing the difficulty of removing products from the shell, increases durability and durability of its use powder.

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Claims (1)

Invention Formula A device for hydrostatic pressing of articles from powder, mainly hollow, containing a source of supply of working fluid, pipelines and an elastic shell for powder placed in a container with a working chamber, seals and plugs, one of which is made with a channel for supplying a working fluid, distinguishes 1 so that, in order to improve the quality of the products, increase the productivity of the pressing process, reduce the labor intensity when extracting products from the shell and increase the service life of the shell, it provides but perforated supporting shells, UP31457 .659 lotto ring and additional container with the formation of cavities flexible pipelines, elastic for the working fluid, while the shell is made annular, corks are fixed in the slots of the plugs, and Completed with additional channels, sealing ring placed in and the inner torx 1 of the plugs are made of the slot of the tube with channels in the cavity for with annular grooves, perforated powder, connected to the source The shells embrace the elastic fluid around the supply of the working fluid through the venloc and are placed in the working chamber.