SU461795A1 - Method of centrifugal casting from refractory metals and their alloys hollow billets with bottom - Google Patents
Method of centrifugal casting from refractory metals and their alloys hollow billets with bottomInfo
- Publication number
- SU461795A1 SU461795A1 SU1919445A SU1919445A SU461795A1 SU 461795 A1 SU461795 A1 SU 461795A1 SU 1919445 A SU1919445 A SU 1919445A SU 1919445 A SU1919445 A SU 1919445A SU 461795 A1 SU461795 A1 SU 461795A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- centrifugal casting
- refractory metals
- casting
- hollow billets
- metal
- Prior art date
Links
- 238000000034 method Methods 0.000 title description 7
- 229910045601 alloy Inorganic materials 0.000 title description 4
- 239000000956 alloy Substances 0.000 title description 4
- 239000003870 refractory metal Substances 0.000 title description 3
- 238000009750 centrifugal casting Methods 0.000 title description 2
- 238000005266 casting Methods 0.000 description 10
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- 229910001338 liquidmetal Inorganic materials 0.000 description 4
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000001465 metallisation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 210000003625 skull Anatomy 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
Landscapes
- Forging (AREA)
Description
1one
Изобретение относитс к металлургии.The invention relates to metallurgy.
Известен способ получени отливок из вольфрама, при котором дозированное количество металла расплавл ют в гарниссажной печи и заливают в изложницу, вращающуюс вокруг вертикальной оси со скоростью 200- 700 об/мин, где не прекраща вращени , охлаждают металл до полной его кристаллизации .A known method for producing tungsten castings, in which a metered amount of metal is melted in a skullcake and poured into a mold, rotating around a vertical axis at a speed of 200-700 rpm, where, without stopping rotation, the metal is cooled until it is completely crystallized.
При таком способе внутренн поверхность расплавленного металла или сплава имеет форму парабалоида вращени , а положение его верщины относительно дна изложницы зависит от конфигурации отливки и скорости вращени изложницы.With this method, the internal surface of the molten metal or alloy has the shape of a parabaloid of rotation, and the position of its vertex relative to the bottom of the mold depends on the configuration of the casting and the speed of rotation of the mold.
Существенным недостатком известного способа вл етс невозможность получени полой отливки с требуемыми толщинами дна и стенки с посто нной толщиной стенки по ее высоте.A significant disadvantage of the known method is the impossibility of obtaining a hollow casting with the required thickness of the bottom and wall with a constant wall thickness along its height.
Целью изобретени вл етс расщирение номенклатуры лить и получение отливок с требуемыми толщинами дна и стенок.The aim of the invention is to expand the casting nomenclature and obtain castings with the required thicknesses of the bottom and walls.
Это достигаетс тем, что гравитационный коэффициент жидкого металла на поверхности изложницы поддерживают посто нным в пределах 25-35 в процессе заливки металла и кристаллизации стенок отливки, а затем в течение 4-10 сек его снижают до нул . ПриThis is achieved by the fact that the gravitational coefficient of the liquid metal on the surface of the mold is kept constant within 25-35 in the process of pouring the metal and crystallization of the walls of the casting, and then within 4-10 seconds it is reduced to zero. With
этом оставщиис жидкий металл опускаетс дл формировани дна отливки.this remaining liquid metal is lowered to form the bottom of the casting.
Предлагаемый способ осуществл етс следующим образом.The proposed method is carried out as follows.
Тугоплавкий металл или сплав расплавл ют в вакуумной гарниссажной печи. Во вращающуюс излол ницу через воронку заливают расплавленный металл. При заливке и кристаллизации стенок гравитационный коэффициент жидкого металла на поверхности вращающейс изложницы поддерживают посто нным в пределах 25-35. После затвердевани необходимой толщины стенки гравитационный коэффициент в течение 4-10 секThe refractory metal or alloy is melted in a vacuum skull. The molten metal is poured into the rotating shell through the funnel. When pouring and crystallizing the walls, the gravity coefficient of the liquid metal on the surface of the rotating mold is kept constant between 25-35. After hardening of the required wall thickness, the gravity coefficient for 4-10 seconds
снижают до нул .reduce to zero.
Предмет изобретени Subject invention
Способ центробежной отливки из тугоплавких металлов и их сплавов полых заготовокMethod of centrifugal casting of refractory metals and their alloys hollow billets
с дном, включающий вращение изложницы вокруг вертикальной оси и заливку в нее дозированного количества металла, отличающийс тем, что, с целью расщирени номенклатуры лить и получени отливок с требуемыми толщинами дна и стенок, гравитационный коэффициент жидкого металла на поверхности изложницы поддерживают посто нным в пределах 25-35 в процессе заливки металла и кристаллизации стенок отливки, а затем в течение 4-10 сек его снижают до нул .with the bottom, including rotation of the mold around the vertical axis and pouring into it a dosed amount of metal, characterized in that, in order to expand the casting nomenclature and obtain castings with the required thicknesses of the bottom and walls, the gravitational coefficient of the liquid metal on the mold surface is kept constant within 25 -35 in the process of pouring metal and crystallization of the walls of the casting, and then within 4-10 seconds it is reduced to zero.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU1919445A SU461795A1 (en) | 1973-05-11 | 1973-05-11 | Method of centrifugal casting from refractory metals and their alloys hollow billets with bottom |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU1919445A SU461795A1 (en) | 1973-05-11 | 1973-05-11 | Method of centrifugal casting from refractory metals and their alloys hollow billets with bottom |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU461795A1 true SU461795A1 (en) | 1975-02-28 |
Family
ID=20552880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU1919445A SU461795A1 (en) | 1973-05-11 | 1973-05-11 | Method of centrifugal casting from refractory metals and their alloys hollow billets with bottom |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU461795A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994002270A1 (en) * | 1992-07-28 | 1994-02-03 | Anatoly Vladimirovich Popov | Method of making castings by oriented melt crystallization |
-
1973
- 1973-05-11 SU SU1919445A patent/SU461795A1/en active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994002270A1 (en) * | 1992-07-28 | 1994-02-03 | Anatoly Vladimirovich Popov | Method of making castings by oriented melt crystallization |
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