United States Patent Application 20070044866 . Kind Code:A1 . Abstract:Disclosed is a carburized machine part which is free from the problem of decreased strength at edge-shaped parts due to excess introduction of carbon. The machine part is produced by processing a [Cr %]>0.5 and carburizing by vacuum carburization.
EP0818555B2 - Method for vacuum carburization - Google European Patent Office Prior art keywords carburizing gas vacuum heating chamber furnace Prior art date 1995-03-29 Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number
Generation of acetylene for on-site use in carburization and other processes . United States Patent Application 20050016831 . Kind Code:A1 . Abstract:An acetylene generation and supply system includes an acetylene generation device configured to generate acetylene from at least one reactant feed stream including at least one carbon containing
Heat Treating:Development Experience in Low-Torr Range Sep 01, 2005 · Over the years, vacuum carburizing has become cost effective over traditional atmosphere carburization . Research in the area of vacuum carburizing has been ongoing for over 40 years. Its feasibility as a heat-treating process has become more accepted owing to the use of reactive hydrocarbons as a carbon source [3,4].
High rate fabrication of compression molded components The Boeing Company, Chicago, IL (United States) Sponsoring Org.:USDOE OSTI Identifier:1248017 Patent Number(s):9,314,975 Application Number:13/870,111 Assignee:The Boeing Company (Chicago, IL) DOE Contract Number:FG36-08GO18135 Resource Type:Patent Resource Relation:Patent File Date:2013 Apr 25 Country of Publication:United States
In the case of small diameter material such as wire rods, since the carburizing depth coincides with the radius of the material, if the material has application of a carburizing process (hereinafter referred to as batch processing), such as described in Japanese Patent No. 3053605, which involves adding a carburizing medium after putting a workpiece in a furnace, variations in carburizing conditions are
Properties of Cases Treated with High-Temperature Vacuum Sep 13, 2013 · Specimens of 16MnCr5 steel were carburized using three methods:endothermic gas carburization, vacuum carburization, and vacuum carburization with pre-nitriding during charge heating stage. The process atmosphere for endothermic gas carburization was obtained from natural gas while the atmosphere for vacuum carburization was a mixture of
US Patent for Low temperature carburization under soft Nov 28, 2018 · Justia Patents US Patent for Low temperature carburization under soft vacuum Patent (Patent # 10,934,611) Low temperature carburization under soft vacuum Nov 28, 2018 -
Feb 22, 2006 · U.S. patent No. Feb. 13, 2001 entitled Vacuum Carburizing Method divulges an improved vacuum carburizing method for steel by heating the steel material to about 900-1100° C. and then introducing ethylene gas while maintaining a vacuum of 1-10 kPa, thereby eliminating the potentially explosive acetylene and replacing the expensing vacuum pumps or mechanical booster
US20160083831A1 - Low temperature carburization under US20160083831A1 US14/938,916 US201514938916A US2016083831A1 US 20160083831 A1 US20160083831 A1 US 20160083831A1 US 201514938916 A US201514938916 A US 201514938916A US 2016083831 AUS9212416B2 - Low temperature carburization under soft US United States Prior art keywords gas carburization workpiece carburizing reactor Prior art date 2009-08-07 Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Active, expires 2032-01-17 Application number