CONNECTING ROD WITH A BEARING METAL

Bearing shells are inserted into the connecting-rod eyes of connecting rods used in internal combustion engines. The fitting of bearing shells constitutes a production step which is a potential source of defects. The aim of the new method is to create connecting rod bearings which require less assem...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	SCHLEGEL, UDO, VOGELSANG, REINHARD
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BEARINGS BLASTING CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DIFFUSION TREATMENT OF METALLIC MATERIAL ELEMENTS OR CRANKSHAFT MECHANISMS ENGINEERING ELEMENTS AND UNITS FLEXIBLE SHAFTS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL LIGHTING MECHANICAL ENGINEERING METALLURGY ROTARY BODIES OTHER THAN GEARING ELEMENTS SHAFTS SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	Bearing shells are inserted into the connecting-rod eyes of connecting rods used in internal combustion engines. The fitting of bearing shells constitutes a production step which is a potential source of defects. The aim of the new method is to create connecting rod bearings which require less assembly work and are firmly joined to the bearing metal. According to the invention, the large connecting-rod eye (3) is microporously plasma-coated with an aluminium bronze. After plasma coating the connecting-rod eye is opened by uncovering the bearing cap (9), which breaks the plasma layer (16). The cap (9) is then screwed back on and the actual gliding layer created by fine spindle trimming. To improve the oil retention volume the plasma layer (16) has an annular groove (32). The aluminium bronze can be especially firmed joined to the connecting rod material by multiple sandblasting treatment of the surface to be coated, using sand particles of increasing particle size. The invention is used in internal combustion engines.