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公开(公告)号：US4921025A
公开(公告)日：1990-05-01
申请号：US348736
申请日：1989-04-13
CPC分类号： C21D1/78 , C23C8/22 , Y10T428/12576
摘要： A process for forming a carburized steel article includes carburizing a steel material containing not more than 0.10% silicon and less than 1.1% chromium to form an austenitic surface matrix having a high density of carbides dispersed therein. After quenching, the carburized steel article is characterized by an outer surface having a high ratio of carbides and is substantially free of intergranular oxides. As a result of preventing undesirable surface oxide formations and simultaneously providing a beneficial surface carbide structure, the bending fatigue strength, wear properties, and contact fatigue strength of articles such as gears, shafts, bearings and couplings are greatly enhanced.
摘要翻译： PCT No.PCT / US88 / 04470 Sec。 371日期：1989年4月13日 102（e）日期1989年4月13日PCT提交1988年12月14日PCT公布。 出版物WO89 / 05865 日本1982年6月29日。一种渗碳钢制品的制造方法，包括对含有不大于0.10％的硅和小于1.1％的铬的钢材进行渗碳，以形成其中分散有高密度碳化物的奥氏体表面基体。 淬火后，渗碳钢制品的特征在于具有高比例的碳化物的外表面，并且基本上不含晶间氧化物。 作为防止不希望的表面氧化物形成并同时提供有益的表面碳化物结构的结果，大大提高了诸如齿轮，轴，轴承和联轴器的制品的弯曲疲劳强度，磨损性能和接触疲劳强度。
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公开(公告)号：US5601363A
公开(公告)日：1997-02-11
申请号：US255625
申请日：1994-06-09
申请人： Gary D. Keil , Wayne A. Supak , Sheryl A. Tipton
发明人： Gary D. Keil , Wayne A. Supak , Sheryl A. Tipton
CPC分类号： G01N27/18
摘要： A quench system cooling effectiveness meter including a reference sensor and a measurement sensor is disclosed. The reference sensor and the measurement sensor are included in a resistance bridge. The amount of heat that can be removed by the quench system from the measurement sensor is recorded to determine the cooling effectiveness of the quench system. The meter can be moved to different locations within the quench system to measure cooling variations within the system as a function of location.
摘要翻译： 公开了一种包括参考传感器和测量传感器的淬火系统冷却效能仪表。 参考传感器和测量传感器包括在电阻桥中。 记录骤冷系统从测量传感器中除去的热量，以确定淬火系统的冷却效果。 该仪表可以移动到淬火系统内的不同位置，以测量系统内的冷却变化作为位置的函数。
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公开(公告)号：US5801296A
公开(公告)日：1998-09-01
申请号：US900684
申请日：1997-07-25
CPC分类号： G01N7/02 , G01N33/0054
摘要： A process for automated measurement of ammonia in a gas mixture containing ammonia gas and one or more water-insoluble gases includes providing a water reservoir adapted for supplying water therefrom through a first solenoid valve and providing a measurement vessel adapted for receiving water. The vessel is adapted for draining the water therefrom through a second solenoid valve. The vessel is also adapted for receiving the gas mixture through a third solenoid valve and purging the gas mixture from the vessel through a fourth solenoid valve. The vessel is adapted for maintaining the gas in the vessel and receiving water thereinto in an amount sufficient to dissolve the ammonia gas contained in the gas mixture, into the water, and allowing a differential pressure between the gas mixture and the water containing dissolved ammonia to be measured. The process also includes providing a measurement vessel adapted for allowing height of water within the vessel to be measured, providing means for measuring height of water within measurement vessel, and providing recording means for converting the measured height signal to an ammonia concentration value.
摘要翻译： 一种用于在含有氨气和一种或多种不溶于水的气体的气体混合物中自动测量氨的方法包括提供适于通过第一电磁阀从其中供水以及提供适于接收水的测量容器的储水器。 容器适于通过第二电磁阀将水从其排出。 容器还适于通过第三电磁阀接收气体混合物，并通过第四电磁阀从容器中清除气体混合物。 容器用于将气体保持在容器中并以足以将包含在气体混合物中的氨气溶解到水中的量接收水，并且允许气体混合物和含有溶解氨的水之间的压差 被测量。 该方法还包括提供适于允许测量容器内的水的高度的测量容器，提供用于测量测量容器内的水的高度的装置，以及提供用于将测量的高度信号转换为氨浓度值的记录装置。
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4.发明授权Steel article having high hardness and improved toughness and process for forming the article 失效具有高硬度和改进韧性的钢制品以及用于形成制品的方法
公开(公告)号：US5910223A
公开(公告)日：1999-06-08
申请号：US978326
申请日：1997-11-25
申请人： Sheryl A. Tipton , Gary D. Keil
发明人： Sheryl A. Tipton , Gary D. Keil
CPC分类号： C23C8/22
摘要： A steel article is formed of a steel material containing from about 0.08 to about 0.35 carbon and is characterized by having a plurality of carbides dispersed on at least one pre-selected surface area of the article, with the surface carbides being dispersed within a predominantly lower bainitic matrix. A method for forming the steel article having high hardness and higher toughness includes carburizing the article at a temperature and for a period of time, in an atmosphere having a carbon potential, sufficient to form carbides and austenite on at least one preselected surface of the article, and then quenching the carburized article to a temperature below the Ar.sub.1 temperature and above the M.sub.s temperature of the steel material for a time sufficient to transform a major portion of the austenite in the preselected surface area microstructure to lower bainite. The steel article has an equivalent Knoop 500 gram maximum particle hardness of at least 900 and a Charpy unnotched, room temperature toughness of at least 50 Joules, thereby providing an article having both high hardness and improved toughness properties.
摘要翻译： 钢制品由含有约0.08至约0.35碳的钢材形成，其特征在于，在制品的至少一个预选表面积上分散有多个碳化物，其中表面碳化物分散在主要较低的 贝氏体矩阵。 用于形成具有高硬度和较高韧性的钢制品的方法包括在具有碳势的气氛中在一定温度和一段时间内对制品进行渗碳，足以在制品的至少一个预选表面上形成碳化物和奥氏体 然后将渗碳制品淬火至低于Ar1温度并高于钢材的Ms温度的温度足以将预选表面积微结构中的大部分奥氏体转变成较低的贝氏体。 钢制品具有至少900的等效的Knoop 500克最大颗粒硬度和至少50焦耳的Charpy无缺口的室温韧性，从而提供具有高硬度和改善的韧性的制品。
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5.发明授权
公开(公告)号：US5767383A
公开(公告)日：1998-06-16
申请号：US799754
申请日：1997-02-11
CPC分类号： G01N7/02 , G01N33/0054
摘要： A process for automated measurement of ammonia in a gas mixture containing ammonia gas and one or more water-insoluble gases includes providing a water reservoir adapted for supplying water therefrom through a first solenoid valve and providing a measurement vessel adapted for receiving water. The vessel is adapted for draining the water therefrom through a second solenoid valve. The vessel is also adapted for receiving the gas mixture through a third solenoid valve and purging the gas mixture from the vessel through a fourth solenoid valve. The vessel is adapted for maintaining the gas in the vessel and receiving water thereinto in an amount sufficient to dissolve the ammonia gas contained in the gas mixture, into the water, and allowing a differential pressure between the gas mixture and the water containing dissolved ammonia to be measured. The process also includes providing a measurement vessel adapted for allowing height of water within the vessel to be measured, providing means for measuring height of water within measurement vessel, and providing recording means for converting the measured height signal to an ammonia concentration value.
摘要翻译： 一种用于在含有氨气和一种或多种不溶于水的气体的气体混合物中自动测量氨的方法包括提供适于通过第一电磁阀从其中供水以及提供适于接收水的测量容器的储水器。 容器适于通过第二电磁阀将水从其排出。 容器还适于通过第三电磁阀接收气体混合物，并通过第四电磁阀从容器中清除气体混合物。 容器用于将气体保持在容器中并以足以将包含在气体混合物中的氨气溶解到水中的量接收水，并且允许气体混合物和含有溶解氨的水之间的压差 被测量。 该方法还包括提供适于允许测量容器内的水的高度的测量容器，提供用于测量测量容器内的水的高度的装置，以及提供用于将测量的高度信号转换为氨浓度值的记录装置。
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公开(公告)号：US6024893A
公开(公告)日：2000-02-15
申请号：US104021
申请日：1998-06-24
摘要： Dissociated ammonia carrier gas used as a reference gas is obtained from an ammonia dissociator which also provides dissociated ammonia carrier gas to a nitriding furnace whereby the source of ammonia supply gas is the same. An oxygen probe is used to regulate the nitriding potential of a nitriding furnace and atmosphere for process control and high quality nitrided parts. The method further includes correlating the probe mV output signal to a nitriding potential and adjusting the ratio of ammonia supply gas to dissociated ammonia carrier gas at the inlet of the nitriding furnace.
摘要翻译： 用作参考气体的离解的氨载体气体是从氨解离器获得的，氨解离器还提供离解的氨载气到氮化炉，由此氨供气源是相同的。 氧气探头用于调节氮化炉的氮化电位和气氛，用于过程控制和高质量氮化部件。 该方法还包括将探针mV输出信号与氮化电位相关联并且调节氨氮供应气体与氮化炉入口处的解离氨载气的比率。
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公开(公告)号：US5722772A
公开(公告)日：1998-03-03
申请号：US584029
申请日：1996-01-11
申请人： Gary D. Keil , Wayne A. Supak , Sheryl A. Tipton
发明人： Gary D. Keil , Wayne A. Supak , Sheryl A. Tipton
IPC分类号： G01K1/08 , C21D1/00 , C21D1/55 , C21D1/56 , C21D1/62 , C21D11/00 , G01K13/00 , G01K17/00 , G01N25/18 , G01N25/00
CPC分类号： G01N25/18 , C21D1/62 , C21D11/005 , C21D1/56
摘要： A quench cooling effectiveness apparatus for continuous monitoring of a heat treat quench system and method of operation is provided. The apparatus preferably includes first and second heat conductive sheaths having temperature sensors installed therein. The heat conductive sheaths are thermally insulated from each other with a heat resistive sheath. A microprocessor is preferably connected to said sensors, applies a known current to one sensor, and calculates a cooling effectiveness of the heat treat quench system from the temperature of the two sensors and the known applied current.
摘要翻译： 提供了一种用于连续监测热处理淬火系统和操作方法的淬火冷却效果装置。 该装置优选地包括其中安装有温度传感器的第一和第二导热护套。 导热护套通过耐热护套彼此绝热。 微处理器优选地连接到所述传感器，向一个传感器施加已知的电流，并且根据两个传感器的温度和已知的施加电流计算热处理骤冷系统的冷却效果。
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公开(公告)号：US5187670A
公开(公告)日：1993-02-16
申请号：US609359
申请日：1990-11-05
申请人： Gary D. Keil , Gregory S. Holloway
发明人： Gary D. Keil , Gregory S. Holloway
CPC分类号： G05B19/41865 , C21D11/00 , C21D9/00 , G05D23/1917 , Y02P90/20
摘要： A control system for heat-treating parts in a furnace structure is provided. A plurality of processing chambers, each having at least one part position, are adapted to simultaneously process a plurality of parts each for a respective predetermined processing time. A memory device stores first records representing processing times associated with each of the parts within each processing chamber, second records representing a desired processing path associated with each part through at least one processing chamber, and third records representing the number and location of occupied part positions within each processing chamber. A computerized control center calculates desired processing times associated with at least one processing chamber for a new part to be processed in the processing chamber. Additionally, the computerized control center determines an entrance time for the new part to enter the furnace structure, in response to the first, second, and third records, and to the calculated desired processing times.
摘要翻译： 提供了一种用于在炉结构中热处理部件的控制系统。 每个具有至少一个部分位置的多个处理室适于同时处理多个部件，每个部件各自预定的处理时间。 存储器设备存储表示与每个处理室内的每个部件相关联的处理时间的第一记录，表示通过至少一个处理室与每个部件相关联的期望处理路径的第二记录，以及表示占用部件位置的数量和位置的第三记录 在每个处理室内。 计算机化控制中心计算与处理室中待处理的新部件的至少一个处理室相关联的期望处理时间。 此外，计算机化控制中心响应于第一，第二和第三记录以及计算出的所需处理时间来确定新部件进入炉结构的入口时间。
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9.发明授权Carbide method and article for hard finishing resulting in improved wear resistance 有权硬质合金方法和硬质合金制品，提高耐磨性公开(公告)号：US07169238B2
公开(公告)日：2007-01-30
申请号：US10745107
申请日：2003-12-22
申请人： John B. Walenta , Charles F. Berndt , Thomas E. Clements , Steven M. Cross , Timothy M. Hoefft , Gary D. Keil
发明人： John B. Walenta , Charles F. Berndt , Thomas E. Clements , Steven M. Cross , Timothy M. Hoefft , Gary D. Keil
IPC分类号： C23C8/22
摘要： An article and method for forming an article having a hard-finished surface including a predetermined density of carbides to improve pitting and wear resistance and to significantly increase the overall life of the article. This method comprises selecting a carburizing grade material to form an article, carburizing the article to form a microstructure on at least one portion of the article having a predetermined density of carbides dispersed in the microstructure to a predetermined depth, quenching the article to form a hardened matrix dispersed with carbides and hard finishing the article to form the surface, the surface having at least approximately 20% by volume fraction carbides dispersed in the hardened matrix.
摘要翻译： 一种用于形成具有包括预定密度的碳化物的硬化表面以改善点蚀和耐磨性并且显着增加制品的整个寿命的制品的制品和方法。 该方法包括选择渗碳级材料以形成制品，使制品渗碳以在具有分散在微结构中的预定密度的碳化物的至少一部分上形成微结构至预定深度，淬火制品以形成硬化 基质用碳化物分散并硬化整理制品以形成表面，该表面具有分散在硬化基体中的至少约20体积％的碳化物。
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10.发明授权Automatic control of endothermic gas generators using low cost oxygen sensing probes 失效使用低成本氧传感探头自动控制吸热气体发生器
公开(公告)号：US5828582A
公开(公告)日：1998-10-27
申请号：US824108
申请日：1997-03-25
CPC分类号： B01D53/30
摘要： A control system for a gas generator is disclosed. The control system includes an automotive type oxygen sensor that produces a signal responsive to the oxygen content of a product gas. The automotive type oxygen sensor is connected to a controller and is installed in the gas generator so that the sensor tip is in the product gas, downstream of a first heat exchanger. Preferably, the installation of the automotive sensor is at a point where the product gas has been cooled to at least 1500.degree. F. at a rate of at least 4000.degree. F. The controller produces an output signal responsive to the oxygen sensor signal. A trim valve receives the controller output signal and responsively varies an input gas to vary the composition of the product gas.
摘要翻译： 公开了一种用于气体发生器的控制系统。 控制系统包括汽车型氧传感器，其产生响应于产品气体的氧含量的信号。 汽车式氧传感器连接到控制器并且安装在气体发生器中，使得传感器尖端位于第一热交换器下游的产品气体中。 优选地，汽车传感器的安装处于产品气体以至少4000°F的速率被冷却至至少1500°F的点。控制器响应于氧传感器信号产生输出信号。 调节阀接收控制器输出信号并响应于改变输入气体以改变产品气体的组成。
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