CS223660B1 - Sliding bearing liner - Google Patents
Sliding bearing liner Download PDFInfo
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- CS223660B1 CS223660B1 CS589580A CS589580A CS223660B1 CS 223660 B1 CS223660 B1 CS 223660B1 CS 589580 A CS589580 A CS 589580A CS 589580 A CS589580 A CS 589580A CS 223660 B1 CS223660 B1 CS 223660B1
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- CS
- Czechoslovakia
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- tin
- sliding
- layer
- lead
- pure iron
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- Sliding-Contact Bearings (AREA)
- Electroplating Methods And Accessories (AREA)
Abstract
Vynálezom je vyriešené kízné ložisko s výstelkou zo zliatín CuPb, alebo CuPbSn a klznou vrstvou zo zliatín SnPb alebo SnCuPb tak, že sa neznižuje odolnost ložiska oddělováním klznej vrstvy a zabraňuje sa jeho korózii. Podstata vynálezu spočívá v tom, že pod klznou vrstvou je nanesená medzivrstva kovu o hrúbke 0,5 až 5 mikronov. Táto medzivrstva je bud z technicky čistého železa, alebo z technicky čistého železa s obsahom niklu. Vynález je upotřebitelný vo výrobě klzných ložísk.The invention solves a sliding bearing with a lining of CuPb or CuPbSn alloys and a sliding layer of SnPb or SnCuPb alloys in such a way that the resistance of the bearing is not reduced by the separation of the sliding layer and its corrosion is prevented. The essence of the invention lies in the fact that an intermediate layer of metal with a thickness of 0.5 to 5 microns is applied under the sliding layer. This intermediate layer is either made of technically pure iron or of technically pure iron containing nickel. The invention is applicable in the production of sliding bearings.
Description
Vynález je upotřebitelný vo výrobě klzných ložísk.The invention is useful in the manufacture of plain bearings.
Vynález sa týká výstelky klzného ložiska, zhotovenej zo zliatiny médi s olovom a cínom.The invention relates to a plain bearing liner made of an alloy with lead and tin media.
Pre zlepšenie klzných a únavových vlastností klzných ložísk s výstelkami zo zliatín médi a olova, alebo médi, olova a cínu sa na výstelku nanáša klzná vrstva zliatiny s přídavkem cínu, připadne i médi. Híbka tejto klznej vrstvy bývá od 2 až do 24 mikrónov. Pri prevádzke klzného ložiska, například v spalovacích motoroch vznikajú na rozhraní uvedených vrstiev posobením zvýšenej teploty spojité medzivrstvy, tvořené intermetalickými zlúčeninami cínu a médi. Tieto medzivrstvy sú křehké a ich kohézna pevnost s vrstvami výstelky ložiska je nízká. Pri prevádzke dochádza preto k oddelovaniu povrchovej vrstvy výstelky a k havárii ložiska. Naviac sa znižuje obsah cínu v povrchovej vrstvě a znižuje sa jej odolnost voči korózii v oleji.To improve the sliding and fatigue properties of plain bearings with media and lead alloys, or lead, tin media, a tin-containing alloys sliding layer, possibly also media, is applied to the liner. The depth of this overlay is from 2 to 24 microns. In the operation of the plain bearing, for example in internal combustion engines, continuous interlayers formed by intermetallic tin compounds and media form at the interface of the said layers by the elevation of elevated temperature. These interlayers are brittle and their cohesive strength with the lining layers of the bearing is low. During operation, therefore, the lining surface layer separates and the bearing crashes. In addition, the tin content of the surface layer is reduced and its corrosion resistance in the oil is reduced.
K odstráneniu tohto nedostatku sa používá ochranná niklová medzivrstva, ktorá sa nanáša medzi výstelku a klznú vrstvu. Tým sa sice zabráni vzniku intermetalickej vrstvy cínu a médi a znižovaniu precenta cínu, vznikajú však intermetalické medzivrstvy niklu s cínom. Kinetika ich tvorby je pomalšia, avšak po vyvinutí sú rovnako nebezpečné.To overcome this drawback, a protective nickel intermediate layer is applied which is applied between the lining and the overlay. Although this avoids the formation of an intermetallic tin layer and the medium and reduces the tin precent, intermetallic nickel-tin interlayers are formed. The kinetics of their formation is slower, but after development they are equally dangerous.
Uvedené nedostatky odstraňuje výstelka pre klzné ložisko podl'a vynálezu, ktorého podstata je v tom, že výstelka pod klznou povrchovou vrstvou má kovovú medzivrstvu o hrúbke 0,5 až 5 mikrónov. Medzivrstva je z technicky čistého železa, alebo z technicky čistého železa s obsahom 10% až 30% niklu.The above-mentioned drawbacks are overcome by the sliding bearing liner according to the invention, which is characterized in that the liner under the sliding surface layer has a metal interlayer having a thickness of 0.5 to 5 microns. The intermediate layer is of technically pure iron or of technically pure iron containing 10% to 30% nickel.
Popísané převedeme výstelky klzného ložiska sa vyznačuje najmá tým, že počas prevádzky nedochádza k tvoreniu křehkých intermetalických medzivrstiev, ani k odčerpávaniu cínu z klznej vrstvy. Preto sa neznižuje odolnost ložiska oddělováním klznej vrstvy a zabraňuje sa jeho korózii.The above described transfer of the linings of the plain bearing is characterized in particular by the fact that during operation neither brittle intermetallic interlayers are formed nor the tin is drained from the plain layer. Therefore, the bearing resistance does not deteriorate by separating the sliding layer and prevents its corrosion.
Povrchová vrstva výstelky obsahuje bud 7 % až 12 % cínu a zbytok olova, alebo 7 % až 12 % cínu, 2 % až 4 % médi a zbytok olova. Pod túto vrstvu sa nanáša dalej uvedeným sposobom technicky čisté železo s obsahom 10 % až 30 % niklu. Efektívna híbka tejto medzivrstvy je od 1 až do 3 mikrónov.The lining surface layer contains either 7% to 12% tin and the remainder of the lead, or 7% to 12% tin, 2% to 4% of the medium and the remainder of the lead. Technically pure iron containing 10% to 30% nickel is deposited below this layer. The effective depth of this interlayer is from 1 to 3 microns.
Pri galvanickom nanášaní medzivrstvy sa používajú známe elektrochemické metódy v síranových alebo chloridových kúpelbch. Po nanesení medzivrstvy Fe alebo FeNi na výstelku z CuSn alebo z CuPbSn sa potom běžným sposobom nanáša klzná vrstva zo zliatiny SnPb alebo Sn, Cu, Pb.Electroplating of the interlayer uses known electrochemical methods in sulphate or chloride baths. After applying the Fe or FeNi intermediate layer to the lining of CuSn or CuPbSn, then a sliding layer of the alloy SnPb or Sn, Cu, Pb is then applied in a conventional manner.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS589580A CS223660B1 (en) | 1980-08-29 | 1980-08-29 | Sliding bearing liner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS589580A CS223660B1 (en) | 1980-08-29 | 1980-08-29 | Sliding bearing liner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CS223660B1 true CS223660B1 (en) | 1983-11-25 |
Family
ID=5404766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS589580A CS223660B1 (en) | 1980-08-29 | 1980-08-29 | Sliding bearing liner |
Country Status (1)
| Country | Link |
|---|---|
| CS (1) | CS223660B1 (en) |
-
1980
- 1980-08-29 CS CS589580A patent/CS223660B1/en unknown
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