SU1611575A1 - Container for sintering highly porous penetrable materials - Google Patents

Abstract

The invention relates to powder metallurgy. The goal is to improve the quality of products and reduce the duration of sintering. A sintered sample of a porous permeable material is placed into the housing 1, and the stoppers 7 and 8 are placed so that they contact the lower edge of the plates and the surface of the cover 9. Fill the slot opening between the plates with powder, which forms an impermeable shutter-screen separating the container into chambers and 12. The container is loaded into the furnace and through the pipeline 4 is fed into the chamber 11 a stream of gas that passes through the pore space of the sintered sample into the chamber 12, and then through the pipeline 5 goes into the atmosphere. In this case, no stagnant zones appear in the sintered sample and deposition of organic decomposition products inside the pores does not occur, as a result of which the quality of the sintered products is improved and the duration of their sintering is reduced. 1 hp f-ly, 3 ill.

Description

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i The invention relates to powder metallurgy, in particular to containers for the removal of highly porous permeable materials.

 The purpose of the invention is to increase the quality of the products and shorten the duration of sintering.

: FIG. 1 shows a container diagram

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pipelines; in fig.

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sintering: in FIG.

with sn that 2 - that

lid, over view, cross section along the same section, e perpendicular to the axis of the pipelines. The container includes a housing 1 with a powder-type shutter 2, a lid 3, pipelines 4 and 5, plates 6, obrazuk) - a slit hole in the lid 3,

Limits to them (bo) VYMI

7 and central 8), sample from

a) permeable permeable material.

box cover

9. Consist of passing through the entire volume of the porous sample and incurring powder from the shutter screen 10 into the porous material:;. The container is divided

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Container fzom. i In case 1 | they dig his anichita: 1 and 7 Nishku 3 and

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enters the chamber 12 and further through the pipeline 5 goes into the atmosphere. Since the entire gas flow is forcibly blown through the cross section of the porous sample, no stagnant zones arise, the reaction products

 They are not deposited on the surface of the sintered material, but are promptly discharged through pipeline 5, the quality of the materials is improved, and the duration of sintering of the blanks is reduced.

10 The proposed container is used in the manufacture of highly porous cellular material of copper (workpiece size 500X X500X150 mm). At the same time, the duration of the sintering operation is reduced by 3 times in comparison with the known container (from 15 to 5 hours), and the quality (state of the material surface) is increased.

Thus, the use of the proposed container for sintering highly porous permeable materials allows to increase the quality of products by 20 and reduce the duration of their sintering.

Claims (2)

1. Container for sintering highly porous permeable materials, comprising a housing, a lid with a powder-like shutter and pipelines, characterized in that, in order to improve the quality of the products and reduce the duration  sintering, it is provided with a limiter and a box-shaped cover for placing the sample, and the cover is made with a silvil hole and plates fixed along the aperture, while limiting „1I” are installed with a possibility of contact with the lower edge of the plates and the surface of the cover. 2. Container according to claim 1, characterized in that the lid is made to complement with sewing stitching rods. -J 2; .:; N fpuz 2 Sample five 1. Container for sintering highly porous permeable materials, comprising a housing, a lid with a powder-like shutter and pipelines, characterized in that, in order to improve the quality of the products and reduce the duration  sintering, it is provided with a limiter and a box-shaped cover for placing the sample, and the cover is made with a silvil hole and plates fixed along the aperture, while limiting „1I” are installed with a possibility of contact with the lower edge of the plates and the surface of the cover. 2. Container according to claim 1, characterized in that the lid is made to complement with sewing stitching rods. srig 3