SU482246A1 - The method of preparation of powdered materials to the formation - Google Patents
The method of preparation of powdered materials to the formationInfo
- Publication number
- SU482246A1 SU482246A1 SU1929750A SU1929750A SU482246A1 SU 482246 A1 SU482246 A1 SU 482246A1 SU 1929750 A SU1929750 A SU 1929750A SU 1929750 A SU1929750 A SU 1929750A SU 482246 A1 SU482246 A1 SU 482246A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- powdered materials
- formation
- preparation
- mixture
- mixing
- Prior art date
Links
Landscapes
- Powder Metallurgy (AREA)
Description
1one
Изобретение относитс к области порошковой металлургии, в частности к способам подготовки порошковых материалов к операции формовани .The invention relates to the field of powder metallurgy, in particular, to methods for preparing powder materials for a molding operation.
Известен способ подготовки порошкообразных материалов, предусматриваюш,ий смешивание порошков в вакууме.A known method for the preparation of powdered materials involves the mixing of powders in vacuum.
Однако этот способ не обеспечивает равномерного распределени пластификатора в объеме порошковой смеси, что вызывает ее неодпородность .However, this method does not ensure uniform distribution of the plasticizer in the volume of the powder mixture, which causes its heterogeneity.
Предлагаемый способ отличаетс от известного тем, что с целью повышени однородности смеси смешивание осушествл ют при температуре ниже температуры охрупчивани пластификатора.The proposed method differs from the known one in that in order to increase the uniformity of the mixture, the mixing is carried out at a temperature below the embrittlement temperature of the plasticizer.
Способ осуществл ют следующим образом.The method is carried out as follows.
Смесь дл изготовлени твердых сплавов и измельченный парафин засыпают в шаровую мельницу вместе с шарами. Мельницу герметизируют и в ней создают вакуум мм рт. ст. Затем мельницу привод т во вращение и в течение всего периода перемешивани твердосплавной смеси с парафином (2- 10 час) мельницу охлаждают до температуры The mixture for making hard alloys and crushed paraffin is poured into a ball mill together with the balls. The mill is sealed and a vacuum of mm Hg is created in it. Art. Then the mill is rotated and during the entire period of mixing the carbide mixture with paraffin (2-10 hours) the mill is cooled to
ниже -50°С, например, жидким азотом. При этой температуре парафин становитс хрупким и легко измельчаетс . Наличие вакуума в мельнице предотвращает расслаивание смеси и парафина, резко различающихс по удельному весу, в результате чего достигаетс равномерное распределение парафина по объему смеси. После окончани перемешивани смесь отдел ют от шаров и из нее формуют издели .below -50 ° C, for example, liquid nitrogen. At this temperature, the paraffin wax becomes brittle and easily crushed. The presence of vacuum in the mill prevents delamination of the mixture and paraffin, which differ sharply in specific gravity, with the result that a uniform distribution of paraffin in the mixture is achieved. After mixing is complete, the mixture is separated from the balls and articles are formed from it.
Осуществление процесса смешивани порошковой смеси и парафина в вакууме предотвращает попадание воздуха в прессуемое изделие, образование раковин и снижение остаточной пористости изделий.The process of mixing the powder mixture and paraffin in a vacuum prevents air from entering the compressible product, the formation of cavities and the reduction of the residual porosity of the products.
Предмет изобретени Subject invention
Способ подготовки порошкообразных материалов к формованию, включающий смешивание порошкообразных материалов с пластификатором в вакууме, отличающийс тем, что, с целью повыщени однородности смеси, смешивание осуществл ют при температуре ниже температуры охрупчивани пластификатора .A method of preparing powdered materials for molding, comprising mixing powdered materials with a plasticizer under vacuum, characterized in that, in order to increase the uniformity of the mixture, the mixing is carried out at a temperature below the embrittlement temperature of the plasticizer.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1929750A SU482246A1 (en) | 1973-06-13 | 1973-06-13 | The method of preparation of powdered materials to the formation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1929750A SU482246A1 (en) | 1973-06-13 | 1973-06-13 | The method of preparation of powdered materials to the formation |
Publications (1)
Publication Number | Publication Date |
---|---|
SU482246A1 true SU482246A1 (en) | 1975-08-30 |
Family
ID=20555903
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU1929750A SU482246A1 (en) | 1973-06-13 | 1973-06-13 | The method of preparation of powdered materials to the formation |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU482246A1 (en) |
-
1973
- 1973-06-13 SU SU1929750A patent/SU482246A1/en active
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