SU418271A1 - METHOD OF MANUFACTURING SINTERED PRODUCTS - Google Patents
METHOD OF MANUFACTURING SINTERED PRODUCTSInfo
- Publication number
- SU418271A1 SU418271A1 SU1794714A SU1794714A SU418271A1 SU 418271 A1 SU418271 A1 SU 418271A1 SU 1794714 A SU1794714 A SU 1794714A SU 1794714 A SU1794714 A SU 1794714A SU 418271 A1 SU418271 A1 SU 418271A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- container
- powder
- manufacturing sintered
- sintered products
- products
- Prior art date
Links
Landscapes
- Powder Metallurgy (AREA)
Description
1one
Изобретение относитс к области порошковой металлургии, в частности к способам изготовлени спеченных изделий из металлических порошков.The invention relates to the field of powder metallurgy, in particular, to methods for manufacturing sintered articles from metal powders.
Известен способ изготовлени спеченных изделий, например, из порошка берилли , включающий засыпку порошка в контейнер, нагрев при одновременном вакуумировании, герметизацию и выдавливание.A known method of manufacturing sintered articles, for example, from beryllium powder, includes pouring powder into a container, heating while simultaneously evacuating, sealing and extruding.
По предложенному способу дл повышени качества изделий из порошков нержавеющих сталей и упрощени технологии их изготовлени контейнер с порошком нагревают до температуры деформации в атмосфере водорода и выдерживают 1-6 час, а затем контейнер герметизируют в печи.According to the proposed method, to improve the quality of stainless steel powder products and simplify their manufacturing technology, the container with the powder is heated to a deformation temperature in a hydrogen atmosphere and held for 1-6 hours, and then the container is sealed in an oven.
Способ осуществл ют следующим образом.The method is carried out as follows.
В контейнер диаметром 77 мм и высотой 150 мм засыпают порошок быстрорежущей стали марки Р 18, нагревают в печи в атмосфаре водорода до температуры 1100-1120°С и выдерживают 4 час. Затем контейнер закрывают холодной крыщкой непосредственно в печи. В результате термического расширени крышки происходит диффузионна ее сварка с контейнеров и его герметизаци . Полученную таким образом сборку экструдируют через матрицу на 600 т прессе на пруток диаметром 25 мм. Способ снижает содержание кислорода в издели х до 0,02 вес. % по сравнению с его содержанием 0,2 вес. % в исходном порошке нержавеющей стали.In a container with a diameter of 77 mm and a height of 150 mm, powder of high-speed steel, grade P 18, is poured, heated in a furnace in a hydrogen atmosphere to a temperature of 1100-1120 ° C and held for 4 hours. Then the container is closed with a cold lid directly in the oven. As a result of thermal expansion of the cover, diffusion welding of it from the containers and its sealing occurs. The assembly obtained in this way is extruded through a die on a 600 t press per bar with a diameter of 25 mm. The method reduces the oxygen content in the product x to 0.02 wt. % compared to its content of 0.2 wt. % in the original stainless steel powder.
Полученные по предложенному способу издели имеют высокие механические свойства.Obtained by the proposed method, the products have high mechanical properties.
Так, в закаленном состо нии экструдированные на прутки издели имеют твердость HRc 66-67, прочность на изгиб 300-350 кг/мм2, ударную в зкость 1-2 кгм/см. Нагрев и выдержка контейнера с порошком в атмосфере водорода, а также герметизаци контейнера непосредственно в печи упрощает технологию изготовлени изделий из порощков быстрорежущих сталей.Thus, in the hardened state, extruded bar-shaped products have a hardness of HRc 66-67, a bending strength of 300-350 kg / mm2, and a impact strength of 1-2 kgm / cm. Heating and holding the container with the powder in a hydrogen atmosphere, as well as sealing the container directly in the furnace, simplifies the technology of manufacturing products from high-speed steel powder.
Предмет изобретени Subject invention
Способ изготовлени спеченных изделий, включающий засыпку порошка в контейнер, их нагрев, герметизацию и деформацию, отличающийс тем, что, с целью повыщени качества изделий из порошков нержавеющих сталей и упрощени технологии их изготовлени , контейнер с порощком нагревают до температуры деформации в атмосфере водорода и выдерживают 1-6 час, а затем контейнер герметизируют в печи.A method of manufacturing sintered products, including filling powder into a container, heating, sealing and deforming, characterized in that, in order to improve the quality of stainless steel powders and simplify their manufacturing technology, the container with the powder is heated to a deformation temperature in a hydrogen atmosphere and withstand 1-6 hours, and then the container is sealed in an oven.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1794714A SU418271A1 (en) | 1972-06-09 | 1972-06-09 | METHOD OF MANUFACTURING SINTERED PRODUCTS |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1794714A SU418271A1 (en) | 1972-06-09 | 1972-06-09 | METHOD OF MANUFACTURING SINTERED PRODUCTS |
Publications (1)
Publication Number | Publication Date |
---|---|
SU418271A1 true SU418271A1 (en) | 1974-03-05 |
Family
ID=20517248
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU1794714A SU418271A1 (en) | 1972-06-09 | 1972-06-09 | METHOD OF MANUFACTURING SINTERED PRODUCTS |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU418271A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1981002264A1 (en) * | 1980-02-13 | 1981-08-20 | Uk Nii | Method of making articles of tool steel powders |
WO1981003451A1 (en) * | 1980-05-30 | 1981-12-10 | Uk Nii Spezial Stalei Splavov | Method of making tool articles with steel powders |
-
1972
- 1972-06-09 SU SU1794714A patent/SU418271A1/en active
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1981002264A1 (en) * | 1980-02-13 | 1981-08-20 | Uk Nii | Method of making articles of tool steel powders |
AT377718B (en) * | 1980-02-13 | 1985-04-25 | Uk Nii Sp Stalej | METHOD FOR PRODUCING TOOLS FROM TOOL STEEL POWDER |
WO1981003451A1 (en) * | 1980-05-30 | 1981-12-10 | Uk Nii Spezial Stalei Splavov | Method of making tool articles with steel powders |
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