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6663724 |
A laminated ring for use as a belt in transmitting power in a continuously variable transmission is produced by welding opposite ends of a sheet of maraging steel to produce a plurality of rings, and rolling said rings to a predetermined...
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5753052 |
In a method of increasing the wear resistance and the corrosion resistance f opposed bearing surfaces of parts subjected to reciprocal friction, in particular when the product of the pressure distributed over the bearing surfaces by the ...
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5346560 |
Precision ferrous metal parts subject to severe friction and corrosion in e are nitrided, preferably in a bath of molten salts based on CNO - cyanate ions, oxidized, preferably in baths of molten oxidizing alkaline salts, and then impre...
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5252145 |
A method of nitriding nickel alloy comprising steps of holding nickel alloy in an atmosphere of fluorine- or fluoride-containing gas in a heated condition and holding the fluorinated nickel alloy in a nitriding atmosphere in a heated con...
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5194097 |
This invention relates to a method of nitriding steel material in a second heat treatment furnace after fluorinating the steel material in a first heat treat furnaceto form a deep and uniform nitrided layer. Then, steel material is treat...
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4563223 |
To impart good salt spray corrosion resistance to alloy steel components, such components are gas nitrocarburized at 550° C. to 800° C. to produce an epsilon layer, oxidized to produce an Fe 3 O 4 layer not more than 1 micrometer thi...
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4016012 |
An improved method for surface treatment of metallic materials is described herein. The improvement exists in that a surface treatment agent and a metallic material to be treated are placed in a treating device, heating of the metallic m...
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3321338 |
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2759863 |
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2584019 |
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2299138 |
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2263906 |
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2240146 |
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1993204 |
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1988929 |
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1893077 |
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1851861 |
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1848958 |
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1811909 |
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1573784 |
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1571289 |
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1549207 |
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RE03920 |
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1317728 |
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1292652 |
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1270874 |
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1260787 |
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1247863 |
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1235901 |
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1207848 |
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0887286 |
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0861999 |
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0836520 |
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0831937 |
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0799542 |
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0718335 |
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0498063 |
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0490660 |
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0440139 |
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0432651 |
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0428687 |
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0397476 |
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0320819 |
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0246861 |
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0170173 |
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0121263 |
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0090313 |
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0084480 |
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0066452 |
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0066310 |
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