| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 148708000 | Treating with specified agent (e.g., heat exchange agent, protective agent, decarburizing agent, denitriding agent, etc.) or vacuum | 11 |
| 148709000 | With preserving, recovering or separately handling or treating of the agent | 1 |
| 20090065108 | Integrated Reformer and Batch Annealing Processes and Apparatus Therefor - Processes and apparatus for batch annealing work pieces in a hydrogen atmosphere use pressure swing sorption to recover hydrogen from the annealing exhaust. In preferred embodiments, hydrogen for the batch annealing is generated by reforming and the recovery of hydrogen is integrated with the reforming operation. | 03-12-2009 |
| 148712000 | In gaseous state | 3 |
| 20090173416 | GAS HEATER - A method and apparatus for heat treating an article by delivering a heating flow of fluid to a localised region of the article, and simultaneously delivering a cooling flow of fluid to a further region of the article. | 07-09-2009 |
| 20090173417 | METHOD FOR ANNEALING OR HARDENING OF METALS - The invention relates to a method for annealing or hardening of a metal or an alloy in a controlled furnace atmosphere, wherein said furnace atmosphere is a hydrogen-free atmosphere comprising nitrogen and carbon monoxide. | 07-09-2009 |
| 20140027027 | HYDROGEN OUT GAS OF POROUS METAL SCAFFOLD - Systems and methods for hydrogen out gas of a porous metal scaffold are disclosed. A method can comprise heating a porous metal scaffold for a period of time sufficient to remove at least a portion of a hydrogen concentration from the scaffold, subjecting the porous metal scaffold to a vacuum while heating it, flowing an inert gas through or around the porous metal scaffold while heating it, and enhancing a mechanical property of the porous metal scaffold. Heating of the porous metal scaffold can include maintaining a temperature of the scaffold between 1035° C. and 1065° C., inclusive. A system can comprise a reaction chamber, a heater, a gas feed, and a vacuum apparatus. The heater can be configured to heat the reaction chamber and the porous metal scaffold, while the gas feed and the vacuum apparatus respectively flow inert gas and subject the porous metal scaffold to a vacuum. | 01-30-2014 |
| 148713000 | In liquid state | 7 |
| 20090095384 | AQUEOUS QUENCHING MEDIA AND USE THEREOF IN QUENCHING METAL SUBSTRATES - Aqueous media for quenching metal substrates are provided and contain (i) a polyvinylpyrrolidone/polyvinylcaprolactam copolymer and (ii) one or more of a second polymer, which is selected from (a) a substituted oxazoline polymer; (b) a poly(oxyethylene-oxyalkylene) glycol; or (c) a polyvinylpyrrolidone polymer. The quenching bath provides reduced cooling rates through the martensite temperature ranges. Also provided are processes for quenching metal substrates using these quenching media. | 04-16-2009 |
| 20100065169 | Metal Quenching Medium - Disclosed is a quenching medium for treating a heated metal part, said medium comprising
| 03-18-2010 |
| 20110094638 | Aqueous Quenching Media and Use Thereof in Quenching Metal Substrates - Aqueous media for quenching metal substrates are provided and contain (i) a polyvinylpyrrolidone/polyvinylcaprolactam copolymer and (ii) one or more of a second polymer, which is selected from (a) a substituted oxazoline polymer; (b) a poly(oxyethylene-oxyalkylene) glycol; or (c) a polyvinylpyrrolidone polymer. The quenching bath provides reduced cooling rates through the martensite temperature ranges. Also provided are processes for quenching metal substrates using these quenching media. | 04-28-2011 |
| 20120118446 | AQUEOUS METAL QUENCHING MEDIUM - Aqueous metal quenching media comprising vinyllactam/acrylamide copolymers | 05-17-2012 |
| 20120247627 | Quenching Process and Apparatus for Practicing Said Process - A process for quenching heat treated metal parts using a liquid quenchant and high pressure is disclosed. In general, the process includes the steps of providing a load of heat treated metal parts in a pressure vessel wherein the load is at an elevated temperature after being heat treated. In a subsequent step, a liquid quenchant is injected into the pressure vessel such that a vapor of the liquid quenchant forms rapidly in the pressure vessel and cools the metal parts. The step of injecting the liquid quenchant into the pressure vessel is continued for a time sufficient to establish a desired peak vapor pressure in the pressure vessel. An apparatus for carrying out the disclosed process is also described. | 10-04-2012 |
| 20140246132 | Aqueous Quenching Media and Use Thereof in Quenching Metal Substrates - Aqueous media for quenching metal substrates are provided and contain (i) a polyvinylpyrrolidone/polyvinylcaprolactam copolymer and (ii) one or more of a second polymer, which is selected from (a) a substituted oxazoline polymer; (b) a poly(oxyethylene-oxyalkylene)glycol; or (c) a polyvinylpyrrolidone polymer. The quenching bath provides reduced cooling rates through the martensite temperature ranges. Also provided are processes for quenching metal substrates using these quenching media. | 09-04-2014 |
| 20140261926 | Synthetic Quenching Fluid Composition - A fluid composition is prepared by esterification of (a) at least one synthetic alcohol and (b) a mixture of fatty acids, including at least oleic and linoleic acids, and at least one of a mixture comprising a Miristic acid, Palmitoleic acid, Margarinic acid, Margaroleic acid, α-Linoleic acid, Arachidic acid, Eicosenoic Behenic acid, and Erucic acid. The fatty acids can also include at least one of stearic acid and palmitic acid. The composition can be used as, or as part of, a quenching bath for a metal. | 09-18-2014 |
