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1. (WO2017092721) METHOD OF PRODUCTION OF HIGH-PRESSURE SEAMLESS CYLINDER FROM CORROSION-RESISTANT STEEL
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2017/092721 International Application No.: PCT/CZ2016/050001
Publication Date: 08.06.2017 International Filing Date: 08.01.2016
IPC:
B21C 23/20 (2006.01) ,B21C 23/32 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
21
MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
C
MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
23
Extruding metal; Impact extrusion
02
Making uncoated products
20
by backward extrusion
B PERFORMING OPERATIONS; TRANSPORTING
21
MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
C
MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
23
Extruding metal; Impact extrusion
32
Lubrication of metal being extruded or of dies, or the like, e.g. physical state of lubricant, location where lubricant is applied
Applicants:
VITKOVICE CYLINDERS A.S. [CZ/CZ]; Ruska 24/83 70600 Ostrava-Vitkovice, CZ
Inventors:
KUCERA, Pavel; CZ
HOFRIK, Petr; CZ
PIJANOWSKI, Tomas; CZ
Agent:
RYLKOVA, Iva; CZ
Priority Data:
PV2015-85503.12.2015CZ
Title (EN) METHOD OF PRODUCTION OF HIGH-PRESSURE SEAMLESS CYLINDER FROM CORROSION-RESISTANT STEEL
(FR) PROCÉDÉ DE PRODUCTION DE BOUTEILLE HAUTE PRESSION SANS SOUDURE À PARTIR D'ACIER RÉSISTANT À LA CORROSION
Abstract:
(EN) Blank (1) of corrosion-resistant steel is coated with coating (2) of water glass with thickness of 20 to 150 μm, cured at 15 to 60 °C, and heated in an induction furnace to the temperature of 1180°C to 1260°C. The heated up blank (1) is without cooling by water descaling transferred into an extrusion press and extruded here, while the coating (2) is broken to pieces and largely removed. Then drawing in a horizontal drawing press and necking are performed. After forming to the final shape of the cylinder, leftovers of coating (2) are removed by pressure blasting. A corrosion-resistant thin-walled seamless high-pressure cylinder with volume of 5 to 260 litres is manufactured.
(FR) Selon l'invention, une ébauche (1) en acier résistant à la corrosion est revêtue d'un revêtement (2) de verre soluble ayant une épaisseur de 20 à 150 µm, durcie à 15 à 60 °C et chauffée dans un four à induction à la température de 1180 °C à 1260 °C. L'ébauche chauffée (1) est, sans refroidissement par décalaminage hydraulique, transférée dans une presse d'extrusion et extrudée dans cette dernière, tandis que le revêtement est cassé en morceaux et en grande partie éliminé. Ensuite un emboutissage dans une presse d'emboutissage horizontal et une rétreinte sont effectués. Après la formation de la forme finale de la bouteille, les restes de revêtement (2) sont éliminés par sablage sous pression. Une bouteille haute pression sans soudure à parois minces résistante à la corrosion ayant un volume de 5 à 260 litres est fabriquée.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
CN108348971EP3365121US20180304330