Resources Contact Us Home
Rolling element and method of producing the same

Image Number 8 for United States Patent #7422643.

There is provided an inexpensive rolling element used under high interface pressure such as induction hardened gears, the rolling element being improved in the seizure resistance of its tooth flanks and having a temper hardness of HRC 50 or more at C. To this end, the rolling element is made from a steel material containing at least 0.45 to 1.5 wt % C and one or more alloy elements selected from 0.1 to 0.5 wt % V and 0.3 to 1.5 wt % Cr, and has a rolling contact surface layer having a structure tempered at low temperature in which 2 to 18% by volume cementite disperses in a martensite parent phase formed by induction heating and cooling and containing 0.25 to 0.8 wt % carbon solid-dissolving therein.

  Recently Added Patents
Vaccine composition against Streptococcus pyogenes
Indicating transfer in an IMS network
Image forming apparatus with enhanced display of guidance information
Electronic device, communication control method of electronic device, and information terminal device
Server-side connection resource pooling
Display screen with graphical user interface
Fuel cell system with mechanical check valve
  Randomly Featured Patents
Swivel cap for flash memory device
Magnetic resonance operating room magnet
System and method for reduction of speckle noise in an image
Method for producing substituted pyridine derivatives
Audio source position detection and audio adjustment
Furan, benzofuran and tetrahydrofuran carboxylic acid esters
Side air-bag with internal tether
Shoe sole
Perihepatic prosthesis
Digital noise reducer