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Plasticine capable of being baked into ceramic and hard alloy device and its prepn process

A technology of cemented carbide and plasticine, which is applied in the field of plastic processing of the green body, can solve the problems of lack of plasticity, limited molding conditions, and high water content, and achieve increased green body density, improved mechanical strength, and high relative density. Effect

Inactive Publication Date: 2006-11-29
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing ceramic mud is generally water-based mud, which has a high water content during plastic molding. In addition, the mud is easy to dehydrate and loses plasticity quickly at room temperature, which limits the molding conditions.
After mixing solid paraffin and ceramic powder, some ceramic blanks can also be plastically formed; but the plasticity of this kind of mud must be above 60°C, and it does not have plasticity at room temperature.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment 1: Plasticine that can be processed into dense oxygen-permeable ceramic membrane

[0018] The perovskite-like SrCo with oxygen permeability 08 Fe 02 o 3-5 Powder (the median diameter of powder particle size is 2 microns) as inorganic filler, takes by weighing this filler of 80% by weight, adds the terpineol (ethyl cellulose) containing ethyl cellulose of 15% by weight wherein Concentration of 15% by weight), 3% vaseline and 2% machine oil were stirred and mixed for 1 hour in a ceramic mortar heated by infrared lamp irradiation, and the heating temperature was about 80° C.; then pounded and practiced mud for 2 hours to obtain Plasticine that can be fired into ceramics. The plasticine is plastically extruded into a ceramic tube body in a plunger-type tube extruder, and finally fired into a dense SrCo with high oxygen separation performance at medium and high temperatures. 08 Fe 02 o 3-5 Tubular ceramic oxygen permeable membrane.

[0019] Under the same m...

Embodiment 2

[0020] Embodiment 2: Plasticine that can be processed into yttrium stabilized zirconia dense ceramic tube

[0021] The complete stable cubic zirconia powder containing 8% yttrium oxide molar percentage is used as an inorganic filler, and the particle size of the powder is 0.01 micron; the powder containing 75% by weight and 20% ethyl Cellulosic terpineol (ethyl cellulose weight percent concentration 20%), 3% vaseline and 2% machine oil were then stirred and mixed for 3 hours (80° C. of heating temperature) under infrared lamp irradiation heating, and pounded Practice mud for 1.5 hours to obtain plasticine that can be fired into ceramics. This kind of plasticine can be plastically formed into a ceramic tube blank with one end cap at room temperature, and sintered into a cubic zirconia ceramic tube with a relative density of more than 97% at about 1550 ° C. It can be used in oxygen sensors for steelmaking.

Embodiment 3

[0022] Embodiment 3: the plasticine that can be processed into kaolinite art ceramic crystal

[0023] Calcined kaolin powder is used as an inorganic filler, and the median particle size of the powder is 1 micron. In a heatable stirring pot, add 75% by weight of the above powder, 15% of microcrystalline paraffin, and 5% of alkyl Silicone oil, 3% vaseline, 1.9% motor oil, 0.1% essence; the ingredients were stirred and mixed for 200 minutes at 80°C for 200 minutes, and after cooling, they became plasticine that could be fired into ceramics; this plasticine was plastically molded by hand, and then After discharging the plastic organic components, and then sintering at 1300 ° C, it becomes a ceramic handicraft with various uses and appreciation value.

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PUM

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Abstract

Ceramic powder or hard alloy powder is used as the inorganic stuffing in plasticine and mixed with organic plastic component, and the mixture is heated and mixed to form plasticine with excellent plasticity at normal temperature. The plasticine consists of inorganic stuffing of granularity of 0.01-10 micron in 65-95 wt% and organic plastic component in 5-35 wt%. The plasticine is machined into various ceramic or hard alloy blank with high solid powder content up to 95 % and baked into ceramic or hard alloy product in small baking shrinkage. The present invention is suitable for the precision machining of ceramic or hard alloy device, and the plasticine with slow organic component volatizing speed may be preserved for long period.

Description

Technical field: [0001] The invention belongs to the plastic processing field of plasticine that can be fired into ceramics, fine ceramics and green bodies in powder metallurgy, and in particular relates to plasticine for firing ceramics and hard alloy devices and a preparation method thereof. Background technique: [0002] Plasticine has very good room temperature plasticity, but existing plasticine (application number is respectively 00123234,00123235,00123233,00123232,00123231,99109360,92108317,93110364,93106620) that has applied for Chinese patent only has sculpture, industrial modeling design, Architectural design, arts and crafts, mold making at room temperature, art education, plasticity of children's toys, and preparation of room temperature devices. In the plastic molding process of ceramics, the mud used also needs better plasticity. The existing ceramic mud is generally water-based mud, which has a high water content during plastic molding. In addition, the mud i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B33/13C04B33/02
Inventor 樊传刚张国栋檀杰李家茂
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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