SE447362B - doctor blade - Google Patents
doctor bladeInfo
- Publication number
- SE447362B SE447362B SE8502954A SE8502954A SE447362B SE 447362 B SE447362 B SE 447362B SE 8502954 A SE8502954 A SE 8502954A SE 8502954 A SE8502954 A SE 8502954A SE 447362 B SE447362 B SE 447362B
- Authority
- SE
- Sweden
- Prior art keywords
- coating
- molybdenum
- product according
- bevel
- thickness
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F9/00—Rotary intaglio printing presses
- B41F9/06—Details
- B41F9/08—Wiping mechanisms
- B41F9/10—Doctors, scrapers, or like devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F9/00—Rotary intaglio printing presses
- B41F9/06—Details
- B41F9/08—Wiping mechanisms
- B41F9/10—Doctors, scrapers, or like devices
- B41F9/1072—Blade construction
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Paper (AREA)
- Coating Apparatus (AREA)
- Road Paving Machines (AREA)
- Printing Plates And Materials Therefor (AREA)
Description
15 20 25 30 35 447 362 REnocöRELsE Fön UPPFINNINGEN Ändamålet med uppfinningen är att erbjuda en förbättrad lösning på ovan angivna problem. Ett syfte är sålunda att förbättra nötnings- beständigheten och friktionsegenskaperna hos bandstålsprodukter, vilka vid sin användning utsätts för nötning som kan äventyra produktens funktion och/eller minska dess aktiva livslängd, och att sänka energibehovet. THE INVENTION OF THE INVENTION The object of the invention is to offer an improved solution to the above problems. A purpose is thus to improve the abrasion resistance and friction properties of strip steel products, which in their use are exposed to abrasion which may jeopardize the product's function and / or reduce its active life, and to reduce the energy requirement.
Ett syfte är också att erbjuda en beläggning, som företrädesvis kan läggas direkt på stålbandet, dvs utan mellanskikt såsom krävs vid exempelvis beläggning av keramiska skikt på stålband.It is also an object to offer a coating which can preferably be applied directly to the steel strip, ie without intermediate layers as required for, for example, coating ceramic layers on steel strips.
Dessa och andra syften kan uppnås därigenom att beläggningen består av en friktionsnedsättande metall eller legering, som täcker åtminstone ett parti av bandstålsproduktens yta. Mycket goda resultat har upp- nåtts med en beläggning av molybden, men det är troligt att goda resultat även kan uppnås med andra metaller eller legeringar. Enligt en vidare aspekt på uppfinningen bör beläggningen bestå av någon av följande metaller, nämligen molybden, tenn, nickel, zink, koppar, aluminium eller krom eller av en legering bestående huvudsakligen av två eller flera av dessa metaller eller av en legering, som innehåller minst 10 % molybden och/eller nickel och/eller minst 5 % tenn, zink, koppar, aluminium och/eller krom.These and other objects can be achieved in that the coating consists of a friction-reducing metal or alloy which covers at least a portion of the surface of the strip steel product. Very good results have been achieved with a coating of molybdenum, but it is probable that good results can also be achieved with other metals or alloys. According to a further aspect of the invention, the coating should consist of any of the following metals, namely molybdenum, tin, nickel, zinc, copper, aluminum or chromium or of an alloy consisting essentially of two or more of these metals or of an alloy containing at least 10% molybdenum and / or nickel and / or at least 5% tin, zinc, copper, aluminum and / or chromium.
Beläggningens skikttjocklek kan variera men uppgår normalt till mellan 0.02 och 0.5 mm, vilket kan motsvara mellan 10 och 100 % av stål- bandets tjocklek. I ett normalt fall är beläggningen begränsad väsentligen endast till den del av klingan eller motsvarande som vid arbete är utsatt för nötning, företrädesvis fasytan eller fasytorna och/eller området intill fasytans eller fasytornas ingångskant på sätt som i och för sig är konventionellt.The layer thickness of the coating can vary but normally amounts to between 0.02 and 0.5 mm, which can correspond to between 10 and 100% of the thickness of the steel strip. In a normal case, the coating is limited substantially only to the part of the blade or equivalent which is subjected to abrasion during work, preferably the bevel surface or bevel surfaces and / or the area adjacent the entrance edge of the bevel surface or bevel surfaces in a manner which is per se conventional.
Ytterligare kännetecken samt aspekter på uppfinningen framgår av de efterföljande patentkraven samt av följande beskrivning av en föredragen utföringsform samt av utförda nötningstester. ut 10 15 20 25 30 35 447 562 KORT FIGURBESKRIVNING I den följande beskrivningen kommer att hänvisas till bifogade ritningsfigurer, av vilka Fig. 1 visar en tvärsektion av en tryckerirakelklinga som belagts med ett slitskikt, och Fig. 2 i diagramform visar slitaget som funktion av tiden för olika beläggningar.Further features and aspects of the invention appear from the following claims and from the following description of a preferred embodiment and from abrasion tests performed. BRIEF DESCRIPTION OF THE DRAWINGS In the following description reference will be made to the accompanying drawing figures, of which Fig. 1 shows a cross section of a printing squeegee blade coated with a wear layer, and Fig. 2 shows in diagrammatic form the wear as a function of the time of different coatings.
BESKRIVNING Av FÖREDRAGEN UTFöRINGsFoRM ocfl UTFÖRDA FöRsöK Med hänvisning först till Fig. 1 betecknas en rakelklinga allmänt med siffran 7. Klingans dimensioner är i figuren starkt förstorade. Den består av ett tunt kallvalsat band 8 med en fasyta 9. Fasytan 9 är belagd med ett slitskikt 10. Slitskiktet täcker med ett parti ll även området intill fasytans 9 ingångskant 12.DESCRIPTION OF THE PREFERRED EMBODIMENT fl PERFORMED EXPERIMENTS Referring first to Fig. 1, a squeegee blade is generally denoted by the number 7. The dimensions of the blade are greatly enlarged in the figure. It consists of a thin cold-rolled strip 8 with a bevel surface 9. The bevel surface 9 is coated with a wear layer 10. The wear layer also covers with a portion 11 the area next to the entrance edge 12 of the bevel surface 9.
Vid de utförda försöken utgjordes materialet i rakelklingorna 8 av ett kolstål (kvalitet UH 2OC) med hårdhet cirka 530 Hv. Schaberklingorna hade följande dimensioner: tjocklek 0.38 mm, bredd 45 mm, längd 225 mm. Schaberklingorna 8 belades med slitskikten 10 och ll med varierande sammansättning. Efter beläggníngen slipades beläggnings- ytorna till de tjocklekar som framgår av Tabell 1. Tabellen innehåller även uppgift om beläggningsskiktens sammansättning och avverkningen uttryckt som viktsförlust efter 30 min.In the experiments performed, the material in the squeegee blades 8 consisted of a carbon steel (quality UH 2OC) with a hardness of approximately 530 Hv. The doctor blades had the following dimensions: thickness 0.38 mm, width 45 mm, length 225 mm. The doctor blades 8 were coated with the wear layers 10 and 11 with varying composition. After the coating, the coating surfaces were sanded to the thicknesses shown in Table 1. The table also contains information on the composition of the coating layers and the felling expressed as weight loss after 30 minutes.
Vid provningen nöttes rakelklingorna mot en roterande stålvals som hade hårdheten 33 HRC i sammanlagt 30 min. Klingornas viktförlust bestämdes var femte minut. Anläggningstrycket mot valsen var 1.8 bar.During the test, the squeegee blades were worn against a rotating steel roller which had a hardness of 33 HRC for a total of 30 minutes. The weight loss of the blades was determined every five minutes. The application pressure against the roller was 1.8 bar.
Valshastigheten uppgick till 1400 rpm.The rolling speed was 1400 rpm.
Resultat framgår av de två sista kolumnerna i Tabell 1 samt av diagrammen i Fig. 2. Överlägset bästa resultat uppnåddes med den uppfinningsenliga, molybdenbelagda rakeln. Uttryokt i relativ nötningsbeständighet var denna nästan 10 gånger bättre än den näst bästa. 447 362 mod OJ 2.0 ßoö usd fiëwëßwflmu» fmwcfifim: åwmfiøm omcd wood waoö uno-o nmoó omcd :ME om .öfiu AwEV mcficxhu>>< wwoö naod need “and wwod :mtnwmm ^EÉ xušärf wwo-o omoó .N36 wwoö owøö :m3 m flmnu än mcficfiäamëmfim wcwfishmmmfimmflm .öšzm >m wcfifizhmmëflm >mpw >m wcfifi-CAWEEL .EZ-E >m wcdhshmwøcm~m UQÜE cowfi 22 mcwhuiíz ~°E\m°~_<+_<~z ncäuiíz owzmošišz wcïwwufiøm .w .n .a .m .N å måax .E >oÉ n AJm-flæfi. 10 15 447 362 Det inses att den förbättrade nötningsbeständigheten kan utnyttjas för att förlänga den effektiva livslängden hos pappersmaskinschabrar, så att intervallen mellan schaberbytena kan förlängas högst avsevärt.Results can be seen from the last two columns in Table 1 and from the diagrams in Fig. 2. By far the best result was obtained with the molybdenum-coated squeegee according to the invention. Expressed in relative abrasion resistance, this was almost 10 times better than the second best. 447 362 mod OJ 2.0 ßoö usd fi ëwëßw fl mu »fmwc fifi m: åwm fi øm omcd wood waoö uno-o nmoó omcd: ME om .ö fi u AwEV mc fi cxhu >> <wwoö naod need“ and wwod: mtnuööm ^ E. m3 m fl mnu än mc fi c fi äamëm fi m wcw fi shmmm fi mm fl m .öšzm> m wc fifi zhmmë fl m> mpw> m wc fifi- CAWEEL .EZ-E> m wcdhshmwøcm ~ m UQÜE cow fi ~ zz ~ mz m ~ mc. .n .a .m .N å måax .E> oÉ n AJm- fl æ fi. It will be appreciated that the improved abrasion resistance can be utilized to extend the effective life of paper machine scrapers so that the intervals between scraper changes can be extended most significantly.
Dessutom medför den lägre friktionen ett minskat effektbehov, vilket kan utnyttjas även vid tryckerischabrar för att högst påtagligt minska effektbehovet för att sänka ínvesterings- och driftskostnaderna.In addition, the lower friction results in a reduced power requirement, which can also be used with printing scrapers to significantly reduce the power requirement in order to reduce investment and operating costs.
Claims (6)
Priority Applications (11)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8502954A SE447362B (en) | 1985-06-14 | 1985-06-14 | doctor blade |
PCT/SE1986/000265 WO1986007309A1 (en) | 1985-06-14 | 1986-06-06 | Wear resistant doctor blade |
AU59663/86A AU5966386A (en) | 1985-06-14 | 1986-06-06 | Wear resistant doctor blade |
BR8607112A BR8607112A (en) | 1985-06-14 | 1986-06-06 | COLD ROLLED TAPE ITEM |
AT86903685T ATE52731T1 (en) | 1985-06-14 | 1986-06-06 | WEAR-RESISTANT BLADE. |
DE8686903685T DE3671193D1 (en) | 1985-06-14 | 1986-06-06 | WEAR-RESISTANT Squeegee. |
JP61503333A JPS62503085A (en) | 1985-06-14 | 1986-06-06 | cold rolled steel strip products |
EP86903685A EP0262137B1 (en) | 1985-06-14 | 1986-06-06 | Wear resistant doctor blade |
KR870700080A KR870700515A (en) | 1985-06-14 | 1987-01-30 | Wear-resistant doctor braid |
NO870518A NO163398C (en) | 1985-06-14 | 1987-02-10 | SHEET BLADE OR SCRAP KNIFE WITH WEAR. |
FI875167A FI875167A (en) | 1985-06-14 | 1987-11-23 | KALLVALSAD BANDSTAOL PRODUCT. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8502954A SE447362B (en) | 1985-06-14 | 1985-06-14 | doctor blade |
Publications (2)
Publication Number | Publication Date |
---|---|
SE8502954D0 SE8502954D0 (en) | 1985-06-14 |
SE447362B true SE447362B (en) | 1986-11-10 |
Family
ID=20360573
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE8502954A SE447362B (en) | 1985-06-14 | 1985-06-14 | doctor blade |
Country Status (9)
Country | Link |
---|---|
EP (1) | EP0262137B1 (en) |
JP (1) | JPS62503085A (en) |
KR (1) | KR870700515A (en) |
AU (1) | AU5966386A (en) |
BR (1) | BR8607112A (en) |
DE (1) | DE3671193D1 (en) |
FI (1) | FI875167A (en) |
SE (1) | SE447362B (en) |
WO (1) | WO1986007309A1 (en) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DK0728579T3 (en) * | 1995-02-27 | 1999-03-22 | Rolf Meyer | Rack for gravure rotary machines and method and apparatus for its manufacture |
DE19509741A1 (en) * | 1995-03-17 | 1996-09-19 | Roland Man Druckmasch | Printing machine roller, in particular ink roller |
FR2733720B1 (en) * | 1995-05-05 | 1997-07-25 | Heidelberg Harris Sa | ROTARY BLADE OF OFFSET PRINTING MACHINE |
FR2740386B1 (en) * | 1995-10-26 | 1998-01-16 | Heidelberg Harris Sa | INK BLADE SUBDIVIDED INTO ZONES FOR A ROTARY PRINTING MACHINE |
SE506563C2 (en) * | 1996-05-02 | 1998-01-12 | Btg Eclepens Sa | crepe |
US5753076A (en) * | 1997-02-03 | 1998-05-19 | Kimberly-Clark Worldwide, Inc. | Method for creping tissue |
ES2171808T3 (en) | 1997-10-24 | 2002-09-16 | Daetwyler Ag | SCRAPER TO ELIMINATE THE EXCESS OF PRINTING INK FROM THE SURFACE OF A PRINT PLATE. |
FI111343B (en) | 1998-06-09 | 2003-07-15 | Metso Paper Inc | Scraper blade and blade holder |
SE0000215L (en) | 2000-01-25 | 2001-07-26 | Btg Eclepens Sa | Rakelknive |
SE519466C2 (en) | 2000-12-07 | 2003-03-04 | Swedev Ab | Schaber or razor blade with nickel coating including abrasion-resistant particles and method of manufacture |
US6546861B2 (en) | 2001-07-30 | 2003-04-15 | Goss Graphic Systems, Inc. | Printing press scraping blade |
KR20030033562A (en) * | 2001-10-24 | 2003-05-01 | 김창준 | Doctor blade |
DE10222453A1 (en) * | 2002-05-22 | 2003-12-04 | Voith Paper Patent Gmbh | Process for the surface treatment of a doctor element |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ZA703701B (en) * | 1969-06-16 | 1971-01-27 | Norton Co | Doctor blade |
US3688336A (en) * | 1970-07-16 | 1972-09-05 | Lodding Engineering Corp | Extended-life doctoring apparatus |
US3703019A (en) * | 1970-10-15 | 1972-11-21 | Norton Co | Surface conforming wear resistant doctor blade for rolls |
SU850750A1 (en) * | 1979-07-24 | 1981-07-30 | Ленинградский Технологическийинститут Целлюлозно-Бумажнойпромышленности | Electrolyte for precipitating molybdenum platings |
DE3110842A1 (en) * | 1981-03-20 | 1982-09-30 | Basf Ag, 6700 Ludwigshafen | Squeegee for gravure printing with plastic printing layers |
SE437683B (en) * | 1982-10-13 | 1985-03-11 | Inventing Ab | CREATE OR SHELL - MATERIAL AGAINST THE ROLL - BY EXV |
SE437681B (en) * | 1982-10-13 | 1985-03-11 | Inventing Ab | CREATIVE OR RABLE FOR CONTROLLABLE PAIRING AND EXTRAORDINATION OF APPLIANCES ON A CURRENT PAPER COAT |
-
1985
- 1985-06-14 SE SE8502954A patent/SE447362B/en not_active IP Right Cessation
-
1986
- 1986-06-06 BR BR8607112A patent/BR8607112A/en unknown
- 1986-06-06 DE DE8686903685T patent/DE3671193D1/en not_active Expired - Fee Related
- 1986-06-06 AU AU59663/86A patent/AU5966386A/en not_active Abandoned
- 1986-06-06 JP JP61503333A patent/JPS62503085A/en active Pending
- 1986-06-06 EP EP86903685A patent/EP0262137B1/en not_active Expired - Lifetime
- 1986-06-06 WO PCT/SE1986/000265 patent/WO1986007309A1/en active IP Right Grant
-
1987
- 1987-01-30 KR KR870700080A patent/KR870700515A/en not_active Application Discontinuation
- 1987-11-23 FI FI875167A patent/FI875167A/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
SE8502954D0 (en) | 1985-06-14 |
KR870700515A (en) | 1987-12-29 |
EP0262137B1 (en) | 1990-05-16 |
DE3671193D1 (en) | 1990-06-21 |
EP0262137A1 (en) | 1988-04-06 |
FI875167A0 (en) | 1987-11-23 |
BR8607112A (en) | 1988-02-23 |
FI875167A (en) | 1987-11-23 |
AU5966386A (en) | 1987-01-07 |
JPS62503085A (en) | 1987-12-10 |
WO1986007309A1 (en) | 1986-12-18 |
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