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Method for producing open-celled body and body prepared using the method

A technology of open-cell and main body, which is applied in the field of preparation of open-hole main body, and can solve the problems of difficult, impossible and huge cost in the economical preparation of open-hole main body

Active Publication Date: 2019-06-18
GLATT GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] These additional costs make the economical preparation of small-sized open-celled bodies more difficult
[0009] In addition, it is not possible to produce specific geometries of open-celled bodies, or it is only possible with known possibilities with great effort and / or great cost

Method used

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  • Method for producing open-celled body and body prepared using the method

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0038] A polyurethane sponge as a porous plastic having dimensions of 200 mm x 200 mm, thickness of 10 mm and cell size of 1300 μm was cut into 400 cubes with edge lengths of 10 mm x 10 mm x 10 mm using a cutting blade. The 400 cubes were wetted with a metal powder / adhesive suspension comprising 80 wt.% ALSI430 metal powder with particle size d903 .

example 2

[0040] A polyurethane sponge having a size of 200 mm x 200 mm, a thickness of 10 mm, and a cell specification of 1300 μm was cut into 400 cubes with edge lengths of 10 mm x 10 mm x 10 mm using a cutting blade. The 400 cubes are made of ceramic powder / comprised of 60% wt.% AI with particle size d90 2 o 3 The powder was wetted with a 40% wt. % binder suspension of 10% PVA in water and then guided several times back and forth through two rollers with a roll distance of 1 mm. A uniform coating was thus obtained, which resulted in an average cube weight of 0.3 g. After drying, the so-called cube blanks were defatted in a furnace and sintered to bulk cubes at a temperature of 1450° C. in an air atmosphere. After sintering, the cube has an average density of 0.4 g / cm 3 .

example 3

[0042] In foamed polyurethane as porous plastic unit 1 with a cell size of 900 μm, a thickness of 8 mm, slits were cut into predefined predetermined breaking points 2 using hot wires (resistance heating wires). In this respect, the slot width amounts to 0.85 mm. The thickness of the pre-defined intended breaking point 2 is up to 1 mm. The dimensions of the remaining structure after the predetermined breaking point 2 has been combined with the gap are chosen such that after sintering a body with dimensions 8 mm×8 mm×6 mm is obtained.

[0043] Polyurethane sponges thus treated with metal powders / includes having particle size d 90 A binder suspension 3 average density. After drying, the so-called cubic green bodies were defatted in a furnace and sintered at a temperature of 1260° C. in a hydrogen atmosphere in a batch furnace. After sintering, the body with dimensions 8 mm x 8 mm x 6 mm breaks away from the plate at a predefined predetermined break point. After sintering, the...

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Abstract

The present invention proposes a method of manufacturing an open-celled body and a body prepared using the method, in which the following process is carried out in the method of manufacturing an open-celled body from a metal or ceramic material so as to be used in a certain specification corresponding to the specification of the body to be prepared Taking into account the shrinkage during the sintering process, or taking into account the shrinkage during the sintering process while taking into account the size and geometric design of the body to be prepared, the open-celled plastic unit body with predetermined breakpoints is infiltrated and coated with a suspension, The suspension contains, in addition to the liquid, at least one powdery material for the preparation of the body. The organic components are discharged after the first heat treatment. Subsequent sintering is carried out, during which an open-celled body is obtained, before the first heat treatment and / or sintering, the part of the porous plastic provided with the suspension is separated, or where after sintering, by force acting at the desired breakpoint Cutting results in an open-celled unit from a plastic unit manufactured from the material forming the body and results in the body in separate form.

Description

technical field [0001] The present invention relates to a method of producing an open-celled body and a body prepared using the method. In this regard, the body may be prepared from a metallic or ceramic material. The open hole is a tetradecahedron-shaped hole, the walls of which are formed with mesh plates. Its surface is open and pores are formed. There is therefore a difference between the pore size and the pore size. Background technique [0002] The technology for producing metal and ceramic open-cell structures or bodies according to the so-called organic foam impregnation (Schwartzwalder) process is prior art. In this respect, the open-cell polyurethane foam cells are preferably coated with a metal powder binder or ceramic powder binder suspension and subsequently degreased and sintered using heat treatment. During degreasing, organic components are discharged, in particular by pyrolysis. [0003] This technique is established for the economical preparation of pl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F3/11C04B38/08
CPCB22F3/1137B22F3/1146B22F5/003B22F2005/005B22F2998/10B22F2003/242B01J21/04B01J21/06B01J23/862B01J35/04B01J37/0217B01J37/082
Inventor 乌尔夫·瓦格诺曼·里格彼得·莱因哈特
Owner GLATT GMBH