WO2004074571A1 - Plasmatrierter wärmetauscher - Google Patents
Plasmatrierter wärmetauscher Download PDFInfo
- Publication number
- WO2004074571A1 WO2004074571A1 PCT/EP2004/001340 EP2004001340W WO2004074571A1 WO 2004074571 A1 WO2004074571 A1 WO 2004074571A1 EP 2004001340 W EP2004001340 W EP 2004001340W WO 2004074571 A1 WO2004074571 A1 WO 2004074571A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- heat exchanger
- plasma
- exchanger according
- coated
- heat transfer
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F5/00—Elements specially adapted for movement
- F28F5/02—Rotary drums or rollers
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G1/00—Calenders; Smoothing apparatus
- D21G1/02—Rolls; Their bearings
- D21G1/0246—Hard rolls
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
- F28F19/02—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using coatings, e.g. vitreous or enamel coatings
- F28F19/06—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using coatings, e.g. vitreous or enamel coatings of metal
Definitions
- the invention relates to a heat exchanger according to the preamble of claim 1.
- Such heat exchangers are used for the production or finishing of web-like products in industry, predominantly in calenders.
- the thermally applied surface coatings have the disadvantage of a relatively large porosity of the finished layer. Wear particles have the ability to penetrate these pores and the less hard matrix areas and then "wash them out”.
- Surface-hardened forged steel rollers in addition to insufficient tempering resistance and the associated low hardness, also have an unfavorable residual stress distribution caused by surface-hardening. High tensile stresses in the area of the hardness zone negate the advantages of the good mechanical properties of forged steel.
- New coating slips and feedstocks in paper production require increased chemical and mechanical corrosion resistance not only of the roll barrel but also of the entire roll surface which is connected to the environment and the web. Due to the enormous heat transfer capacities (> 80 kW / m), constantly increasing heat transfer temperatures, the contact surfaces exposed to the fluid heat transfer media are exposed to ever greater chemical / mechanical corrosion.
- the invention has for its object to develop a generic heat exchanger so that he the above. Does not have disadvantages, in particular that surface hardnesses well in excess of 400-450 HV are achieved and that chemical / mechanical corrosion is minimized even with heat transfer rates> 80 kW / m.
- the tempered forged steel rollers described above are plasma-coated at the desired locations.
- plasma mating is used in the following as a collective term for the sub-terms plasma nitriding, plasma nitrocarburizing, plasma oxidizing, plasma carbonitriding and plasma carburizing. This takes place primarily in a vacuum chamber at a treatment pressure of 0.3 to 10 mbar.
- the treatment temperature is between 400 - 600 ° C depending on the task.
- Ammonia, nitrogen, methane and hydrogen are predominantly used as process gases.
- Pressure, temperature, time and gas type form parameters when varying layers and desired surface hardness. Surface hardnesses of up to 1200 HV can be achieved on the desired surfaces, with a hardness depth of up to 1 mm being achieved.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04710849A EP1595025A1 (de) | 2003-02-19 | 2004-02-13 | Plasmatrierter wärmetauscher |
JP2006501825A JP2006518013A (ja) | 2003-02-19 | 2004-02-13 | プラズマ処理された熱交換器 |
CA002516951A CA2516951A1 (en) | 2003-02-19 | 2004-02-13 | Plasma-treated heat exchangers |
US10/544,603 US20060144563A1 (en) | 2003-02-19 | 2004-02-13 | Plasmatized heat exchanger |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10307107.5 | 2003-02-19 | ||
DE10307107 | 2003-02-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004074571A1 true WO2004074571A1 (de) | 2004-09-02 |
Family
ID=32891762
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2004/001340 WO2004074571A1 (de) | 2003-02-19 | 2004-02-13 | Plasmatrierter wärmetauscher |
Country Status (5)
Country | Link |
---|---|
US (1) | US20060144563A1 (de) |
EP (1) | EP1595025A1 (de) |
JP (1) | JP2006518013A (de) |
CA (1) | CA2516951A1 (de) |
WO (1) | WO2004074571A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007085614A2 (de) * | 2006-01-24 | 2007-08-02 | Walter Reichel | Vorichtung und verfahren zur oberflächenbehandlung von walzen in der papierindustrie |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5241455B2 (ja) * | 2008-12-02 | 2013-07-17 | 新日鐵住金株式会社 | 浸炭窒化部材および浸炭窒化部材の製造方法 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0383466A1 (de) * | 1989-02-16 | 1990-08-22 | Valmet-Tampella Inc. | Yankee-Zylinder und Verfahren zum Beschichten eines Yankee-Zylinders |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05304872A (ja) * | 1992-04-30 | 1993-11-19 | Sanyo Electric Co Ltd | 自動製麺機のミキサー取付構造 |
US5707705A (en) * | 1993-09-08 | 1998-01-13 | Tulip Memory Systems, Inc. | Titanium or titanium-alloy substrate for magnetic-recording media |
US5499936A (en) * | 1995-01-12 | 1996-03-19 | Outboard Marine Corporation | Monolithic metallic drive shafts which are resistant to corrosion and wear |
DE19525863A1 (de) * | 1995-07-15 | 1997-01-16 | Ae Goetze Gmbh | Gleitringdichtung für die Laufwerke von Gleiskettenfahrzeugen |
DE19730449A1 (de) * | 1997-07-16 | 1999-01-21 | Mosca G Maschf | Spannvorrichtung für Umreifungsmaschinen |
US6755566B2 (en) * | 2001-02-15 | 2004-06-29 | Konrad Damasko | Clockwork |
US7465362B2 (en) * | 2002-05-08 | 2008-12-16 | Btu International, Inc. | Plasma-assisted nitrogen surface-treatment |
US6966954B2 (en) * | 2002-10-24 | 2005-11-22 | General Electric Comany | Spall propagation properties of case-hardened M50 and M50NiL bearings |
-
2004
- 2004-02-13 EP EP04710849A patent/EP1595025A1/de not_active Withdrawn
- 2004-02-13 US US10/544,603 patent/US20060144563A1/en not_active Abandoned
- 2004-02-13 CA CA002516951A patent/CA2516951A1/en not_active Abandoned
- 2004-02-13 WO PCT/EP2004/001340 patent/WO2004074571A1/de active Application Filing
- 2004-02-13 JP JP2006501825A patent/JP2006518013A/ja active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0383466A1 (de) * | 1989-02-16 | 1990-08-22 | Valmet-Tampella Inc. | Yankee-Zylinder und Verfahren zum Beschichten eines Yankee-Zylinders |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007085614A2 (de) * | 2006-01-24 | 2007-08-02 | Walter Reichel | Vorichtung und verfahren zur oberflächenbehandlung von walzen in der papierindustrie |
WO2007085614A3 (de) * | 2006-01-24 | 2008-02-14 | Walter Reichel | Vorichtung und verfahren zur oberflächenbehandlung von walzen in der papierindustrie |
Also Published As
Publication number | Publication date |
---|---|
US20060144563A1 (en) | 2006-07-06 |
JP2006518013A (ja) | 2006-08-03 |
EP1595025A1 (de) | 2005-11-16 |
CA2516951A1 (en) | 2004-09-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Nie et al. | Sliding wear behaviour of electrolytic plasma nitrided cast iron and steel | |
Oliveira et al. | Micro-abrasive wear test of niobium carbide layers produced on AISI H13 and M2 steels | |
MXPA02012780A (es) | Articulos de acero recubiertos de carburo y metodo para elaborarlos. | |
JPH0158265B2 (de) | ||
Kononenko et al. | Recovering a reducing-gear shaft neck by reinforced-bush adhesion | |
WO2004074571A1 (de) | Plasmatrierter wärmetauscher | |
US6087022A (en) | Component having a functionally graded material coating for improved performance | |
EP3631023B1 (de) | Verfahren zur oberflächenbehandlung eines stahlyankees | |
EP1333105A1 (de) | Verfahren und Vorrichtung zur Wärmebehandlung metallischer Werkstücke sowie wärmebehandeltes Werkstück | |
WO2003038141A2 (de) | Verfahren zur herstellung einer uv-absorbierenden transparenten abriebschutzschicht | |
Pereloma et al. | Comparison of ferritic nitrocarburising technologies | |
DE3714327C2 (de) | ||
US20020146514A1 (en) | Coating composition for passivating film with excellent corrosion resistance | |
CN102019731A (zh) | 一种耐指纹拉丝板 | |
DE202006020978U1 (de) | PVD-Hartstoffbeschichtung von Kettengelenkteilen | |
DE102018103321A1 (de) | Verfahren zur Herstellung von Hartstoffschichten | |
WO2004015199A2 (de) | Vorrichtung und verfahren zur oberflächenbearbeitung von papierbahnen und ähnlichen endlosvliesen mittels beheizbarer walze | |
EP2194187A1 (de) | Kalander | |
Kaplun et al. | Durability of the “Coating–Base” Composition during Rolling Friction | |
Aghajani et al. | Active Screen Plasma Nitriding | |
KR100388897B1 (ko) | 가공성, 내식성이 뛰어난 고윤활크롬-프리 내지문 강판 | |
Jamison | Friction and wear reduction with tribological coatings | |
JPS60178017A (ja) | 耐焼付性の優れた押出ピン | |
EP1474541A1 (de) | Verfahren zur herstellung einer oxidschicht auf metallteilen | |
EP3752656A1 (de) | Hartstoffschicht auf metallsubstrat |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): BW GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
DPEN | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed from 20040101) | ||
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2004710849 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref document number: 2006144563 Country of ref document: US Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 10544603 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2006501825 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2516951 Country of ref document: CA |
|
WWP | Wipo information: published in national office |
Ref document number: 2004710849 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 10544603 Country of ref document: US |