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Class Information
Number: 148/218
Name: Metal treatment > Process of modifying or maintaining internal physical structure (i.e., microstructure) or chemical properties of metal, process of reactive coating of metal and process of chemical-heat removing (e.g., flame-cutting, etc.) or burning of metal > Carburizing or nitriding using externally supplied carbon or nitrogen source > Combined carburizing and nitriding (e.g., carbonitriding, nitrocarburizing, etc.)
Description: Process wherein a carburizing and a nitriding reaction occurs in the same process.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7431778 |
Case-hardening of stainless steel |
Oct. 7, 2008 |
| 7422643 |
Rolling element and method of producing the same |
Sep. 9, 2008 |
| 7384488 |
Method for producing gears and/or shaft components with superior bending fatigue strength and pitting fatigue life from conventional alloy steels |
Jun. 10, 2008 |
| 7186304 |
Carbo-nitrided case hardened martensitic stainless steels |
Mar. 6, 2007 |
| 7112248 |
Vacuum carbo-nitriding method |
Sep. 26, 2006 |
| 6948247 |
Method for forming a bearing race for a cylindrical bearing |
Sep. 27, 2005 |
| 6846367 |
Heat-treating method for improving wear-resistance and corrosion-resistance of chromium-plated steel substrate |
Jan. 25, 2005 |
| 6656293 |
Surface treatment for ferrous components |
Dec. 2, 2003 |
| 6623567 |
Method for high concentration carburizing and quenching of steel and high concentration carburized and quenched steel part |
Sep. 23, 2003 |
| 6454880 |
Material for die casting tooling components, method for making same, and tooling components made from the material and process |
Sep. 24, 2002 |
| 6447619 |
High surface pressure resistant steel parts and methods of producing same |
Sep. 10, 2002 |
| 6406560 |
Method for the thermal treatment of metal |
Jun. 18, 2002 |
| 6328819 |
Method and use of an apparatus for the thermal treatment, in particular nitriding treatment, of metal workpieces |
Dec. 11, 2001 |
| 6309475 |
Rolling element and producing method |
Oct. 30, 2001 |
| 6258179 |
Carburized parts, method for producing same and carburizing system |
Jul. 10, 2001 |
| 6248186 |
Ball-and-roller bearing and method of manufacturing the same |
Jun. 19, 2001 |
| 6235128 |
Carbon and alloy steels thermochemical treatments |
May. 22, 2001 |
| 6129988 |
Gaseous modification of MCrAlY coatings |
Oct. 10, 2000 |
| 6090225 |
Process for manufacturing a carburized or carbonitrided steel component, and steel for the manufacture of this component |
Jul. 18, 2000 |
| 5916383 |
Method of shot peening a hardened metal product with shot having high hardness |
Jun. 29, 1999 |
| 5912399 |
Chemical synthesis of refractory metal based composite powders |
Jun. 15, 1999 |
| 5900126 |
Method for manufacturing austenitic stainless steel substrate for magnetic-recording media |
May. 4, 1999 |
| 5810947 |
Method of surface modification for tool steels |
Sep. 22, 1998 |
| 5785774 |
Process for producing heat treatment atmospheres |
Jul. 28, 1998 |
| 5735375 |
Nitrocarburized component for an electromagnetic friction clutch assembly |
Apr. 7, 1998 |
| 5735971 |
Method for the Pre-treatment of steel parts prior to salt bath nitriding |
Apr. 7, 1998 |
| 5714015 |
Ferritic nitrocarburization process for steel balls |
Feb. 3, 1998 |
| 5707460 |
Method of producing parts having improved wear, fatigue and corrosion resistance from medium alloy, low carbon steel and parts obtained therefrom |
Jan. 13, 1998 |
| 5702540 |
Vacuum carburizing method and device, and carburized products |
Dec. 30, 1997 |
| 5669988 |
Corrugating roll and manufacturing method thereof |
Sep. 23, 1997 |
| 5580397 |
Carbide and carbonitride surface treatment method for refractory metals |
Dec. 3, 1996 |
| 5571341 |
Thermochemical treatment of thin-walled structural steel elements |
Nov. 5, 1996 |
| 5534083 |
Method for producing a reinforcing stainless steel wire-aluminum alloy composite structure and a product thereof |
Jul. 9, 1996 |
| 5498299 |
Process for avoiding surface oxidation in the carburization of steels |
Mar. 12, 1996 |
| 5456766 |
Process for carbonitriding steel |
Oct. 10, 1995 |
| 5417774 |
Heat treating atmospheres |
May. 23, 1995 |
| 5389161 |
Process for phosphating steel parts to improve corrosion and wear resistance |
Feb. 14, 1995 |
| 5348592 |
Method of producing nitrogen-hydrogen atmospheres for metals processing |
Sep. 20, 1994 |
| 5340412 |
Method of fluorinated nitriding of austenitic stainless steel screw |
Aug. 23, 1994 |
| 5298090 |
Atmospheres for heat treating non-ferrous metals and alloys |
Mar. 29, 1994 |
| 5288340 |
Method of improving the corrosion resistance of carbonitrided components made of ferrous materials |
Feb. 22, 1994 |
| 5284526 |
Integrated process for producing atmospheres suitable for heat treating from non-cryogenically generated nitrogen |
Feb. 8, 1994 |
| 5254183 |
Gas turbine elements with coke resistant surfaces |
Oct. 19, 1993 |
| 5252146 |
Coat-nitrocarburizing of irons and steels |
Oct. 12, 1993 |
| 5232522 |
Rapid omnidirectional compaction process for producing metal nitride, carbide, or carbonitride coating on ceramic substrate |
Aug. 3, 1993 |
| 5154779 |
Method of nitriding, carburizing, or oxidizing refractory metal articles using microwaves |
Oct. 13, 1992 |
| 5143558 |
Method of heat treating metal parts in an integrated continuous and batch furnace system |
Sep. 1, 1992 |
| 5102476 |
Process for nitrocarburizing components made from steel |
Apr. 7, 1992 |
| 5084116 |
Rolling contact element steel and rolling bearing made thereof |
Jan. 28, 1992 |
| 5045126 |
Process and equipment for the heat treatment, before hardening, of metallic pieces by cementation, carbonitridation of heating |
Sep. 3, 1991 |
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