ES483952A2 - Perfeccionamientos en la pat.principal n.436763 por proce- dimiento para fabricar por extension tubos, barras u obje- tos metalicos compactos similares alargados y perfilados,asicomo capsula para poner en practica dicho proced. - Google Patents
Perfeccionamientos en la pat.principal n.436763 por proce- dimiento para fabricar por extension tubos, barras u obje- tos metalicos compactos similares alargados y perfilados,asicomo capsula para poner en practica dicho proced.Info
- Publication number
- ES483952A2 ES483952A2 ES483952A ES483952A ES483952A2 ES 483952 A2 ES483952 A2 ES 483952A2 ES 483952 A ES483952 A ES 483952A ES 483952 A ES483952 A ES 483952A ES 483952 A2 ES483952 A2 ES 483952A2
- Authority
- ES
- Spain
- Prior art keywords
- cold
- stainless steel
- prodn
- product
- cold working
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000011521 glass Substances 0.000 title abstract 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 title abstract 3
- 239000000314 lubricant Substances 0.000 title abstract 3
- 239000010935 stainless steel Substances 0.000 title abstract 3
- 229910001220 stainless steel Inorganic materials 0.000 title abstract 3
- 238000005482 strain hardening Methods 0.000 title abstract 3
- 235000011149 sulphuric acid Nutrition 0.000 title abstract 3
- 239000001117 sulphuric acid Substances 0.000 title abstract 2
- 238000010438 heat treatment Methods 0.000 title 1
- 238000004663 powder metallurgy Methods 0.000 title 1
- 238000005406 washing Methods 0.000 title 1
- 239000002775 capsule Substances 0.000 abstract 3
- 239000002253 acid Substances 0.000 abstract 2
- 239000003921 oil Substances 0.000 abstract 2
- 239000000843 powder Substances 0.000 abstract 2
- 229910000975 Carbon steel Inorganic materials 0.000 abstract 1
- 229910004077 HF-HNO3 Inorganic materials 0.000 abstract 1
- 239000000956 alloy Substances 0.000 abstract 1
- 229910045601 alloy Inorganic materials 0.000 abstract 1
- 239000010962 carbon steel Substances 0.000 abstract 1
- 238000010310 metallurgical process Methods 0.000 abstract 1
- 238000005096 rolling process Methods 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/12—Both compacting and sintering
- B22F3/1208—Containers or coating used therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/20—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces by extruding
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Lubricants (AREA)
- Metal Extraction Processes (AREA)
- Powder Metallurgy (AREA)
Abstract
Perfeccionamientos en la patente principal nº 436.763 por "procedimiento para fabricar por extrusión tubos, barras u objetos metálicos compactos similares alargados y perfilados, aí como cápsula para poner en práctica dicho procedimiento, según el cual se producen primero, mediante empleo de una cápsula metálica de pared fina, preferentemente una cápsula de acero al carbono de baja aleación y por medio de la compresión isostática en frío del polvo de acero inoxidable, una piezas prensadas, que se transforman luego mediante extrusión y empleo de vidrio como lubrificante a altas temperaturas, con preferencia de aproximadamente 1.200ºC , en tubos con una textura densa, caracterizados porque los tubos extruídos , aún rodeados por la capsula , se trata en primer lugar con ácido sulfúrico acuoso, para retirar fundamentalmente el vidrió aún existente en su superficie, se transforman en frío mediante estirado o laminación a paso de peregrino y se ponen al rojo vivo en una atmósfera oxidante despuésde la transformación en frío.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19782838850 DE2838850C2 (de) | 1978-09-06 | 1978-09-06 | Verfahren zum Herstellen kaltverformter Rohre aus auf pulvermetallurgischem Weg erzeugten stranggepreßten rostfreien Stahlrohren |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES483952A2 true ES483952A2 (es) | 1980-10-01 |
Family
ID=6048817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES483952A Expired ES483952A2 (es) | 1978-09-06 | 1979-09-06 | Perfeccionamientos en la pat.principal n.436763 por proce- dimiento para fabricar por extension tubos, barras u obje- tos metalicos compactos similares alargados y perfilados,asicomo capsula para poner en practica dicho proced. |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE878611R (es) |
| DE (1) | DE2838850C2 (es) |
| ES (1) | ES483952A2 (es) |
| FR (1) | FR2435309A2 (es) |
| RO (1) | RO78382A (es) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2533468B1 (fr) * | 1982-09-23 | 1986-03-14 | Nyby Uddeholm Ab | Capsule pour ebauches servant a l'extrusion de pieces, notamment de tubes |
| FR2542228B1 (fr) * | 1983-03-10 | 1985-08-02 | Cegedur | Procede de frittage sous pression de poudres d'alliages d'aluminium |
| CN104741612A (zh) * | 2014-11-26 | 2015-07-01 | 内蒙古北方重工业集团有限公司 | 粉末高温合金棒挤压方法 |
| CN114273500B (zh) * | 2021-12-09 | 2023-09-29 | 中航贵州飞机有限责任公司 | 一种橡皮囊液压成形用柔性增压块的使用方法 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE553992A (es) * | ||||
| BE794142A (fr) * | 1972-01-17 | 1973-07-17 | Int Nickel Ltd | Alliages pour hautes temperatures |
| US3798740A (en) * | 1972-10-02 | 1974-03-26 | Davy Ashmore Ltd | Method of extruding a porous compacted mass of metal powder having a sealed outer surface |
| DE2419014C3 (de) * | 1974-04-19 | 1985-08-01 | Nyby Bruks AB, Nybybruk | Verfahren zum Herstellen von Rohren aus rostfreiem Stahl und Anwendung des Verfahrens auf das Herstellen von Verbundrohren |
-
1978
- 1978-09-06 DE DE19782838850 patent/DE2838850C2/de not_active Expired
-
1979
- 1979-09-05 RO RO7998605A patent/RO78382A/ro unknown
- 1979-09-05 FR FR7922250A patent/FR2435309A2/fr active Granted
- 1979-09-05 BE BE0/197023A patent/BE878611R/xx not_active IP Right Cessation
- 1979-09-06 ES ES483952A patent/ES483952A2/es not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR2435309A2 (fr) | 1980-04-04 |
| RO78382A (ro) | 1982-02-26 |
| BE878611R (fr) | 1979-12-31 |
| DE2838850C2 (de) | 1983-12-15 |
| DE2838850A1 (de) | 1980-03-27 |
| FR2435309B2 (es) | 1983-06-03 |
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