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    • 6. 发明授权
    • Method and apparatus for the automatic monitoring of operating safety
and for controlling the progress of the process in a vacuum
heat-treatment oven
    • 用于自动监测操作安全性和控制真空加热炉过程进展的方法和装置
    • US5225142A
    • 1993-07-06
    • US773363
    • 1991-10-07
    • Paul HeilmannPeter MinarskiFriedrich Preisser
    • Paul HeilmannPeter MinarskiFriedrich Preisser
    • C21D1/767C21D1/773F27B5/05F27B5/06F27B5/14F27B5/16F27D19/00
    • F27D19/00C21D1/767C21D1/773F27B5/16F27B2005/064F27B2005/146F27B2005/164F27B2005/167
    • In a vacuum heat treating oven operating with hydrogen under pressure as the cooling medium, especially for the quenching of greatly heated metal workpieces (5), a method is provided for the automatic control of the progress of the process and for monitoring safety of operation. The housing (4) of the heat treating oven is for this purpose connected to gas inlet lines (9 and 10), one for the admission of the cooling gas and one for the admission of the flushing gas (H.sub.2 and N.sub.2, respectively), and also to a vacuum line (17) and to a gas outlet line (11) into each of which gas sensors (24, 39, 42) are inserted, which during the quenching process signal the gas concentration to a central processing unit (41) which also is connected to pressure sensors (19, 20) and a gas sensor (21) which issue additional signals concerning the gas pressures prevailing in each instant in the interior of the housing (4) or gas inlet line (10) and concerning the gas concentration in the environment of the oven to the central processing unit (41), which then in turn, according to preset programs, actuates the gas inlet and gas outlet valves (25, 30, and 18, 28, respectively) and turns on or off the motor-blower unit (12, 13) and the heating unit (15, 15a, . . . ).
    • 在作为冷却介质的压力下用氢气操作的真空热处理炉中,特别是用于淬火大量加热的金属工件(5)的真空热处理炉中,提供了一种用于自动控制过程进度和监测操作安全性的方法。 为此,热处理炉的壳体(4)连接到气体入口管线(9和10),一个用于进入冷却气体,一个用于允许冲洗气体(分别为H2和N2), 并且还连接到每个气体传感器(24,39,42)中插入的真空管线(17)和气体出口管线(11),这在淬火过程中将气体浓度信号传送到中央处理单元(41 ),其还连接到压力传感器(19,20)和气体传感器(21),气体传感器(21)发出关于在壳体(4)或气体入口管线(10)的内部的每一瞬间主要的气体压力的附加信号,并且涉及 将烘箱环境中的中央处理单元(41)的气体浓度依次按照预先设定的程序分别致动气体入口和出气阀(分别为25,30和18,28),并转动 电动鼓风机单元(12,13)和加热单元(15,15a ...)之间的开/关。
    • 8. 发明授权
    • Method and apparatus for the automatic monitoring of operating safety
and for controlling the progress of the process in a vacuum
heat-treatment oven
    • 用于自动监测操作安全性和控制真空热处理炉过程进展的方法和装置
    • US5362031A
    • 1994-11-08
    • US044300
    • 1993-04-07
    • Paul HeilmannPeter MinarskiFriedrich Preisser
    • Paul HeilmannPeter MinarskiFriedrich Preisser
    • C21D1/767C21D1/773F27B5/05F27B5/06F27B5/14F27B5/16F27D19/00
    • F27D19/00C21D1/767C21D1/773F27B5/16F27B2005/064F27B2005/146F27B2005/164F27B2005/167
    • In a vacuum heat treating oven operating with hydrogen under pressure as the cooling medium, especially for the quenching of greatly heated metal workpieces (5), a method is provided for the automatic control of the progress of the process and for monitoring safety of operation. The housing (4) of the heat treating oven is for this purpose connected to gas inlet lines (9 and 10), one for the admission of the cooling gas and one for the admission of the flushing gas (H.sub.2 and N.sub.2, respectively), and also to a vacuum line (17) and to a gas outlet line (11) into each of which gas sensors (24, 39, 42) are inserted, which during the quenching process signal the gas concentration to a central processing unit (41) which also is connected to pressure sensors (19, 20) and a gas sensor (21) which issue additional signals concerning the gas pressures prevailing in each instant in the interior of the housing (4) or gas inlet line (10) and concerning the gas concentration in the environment of the oven to the central processing unit (41), which then in turn, according to preset programs, actuates the gas inlet and gas outlet valves (25, 30, and 18, 28, respectively) and turns on or off the motor-blower unit (12, 13) and the heating unit (15, 15a, . . . ).
    • 在作为冷却介质的压力下用氢气操作的真空热处理炉中,特别是用于淬火大量加热的金属工件(5)的真空热处理炉中,提供了一种用于自动控制过程进度和监测操作安全性的方法。 为此,热处理炉的壳体(4)连接到气体入口管线(9和10),一个用于进入冷却气体,一个用于允许冲洗气体(分别为H2和N2), 并且还连接到每个气体传感器(24,39,42)中插入的真空管线(17)和气体出口管线(11),这在淬火过程中将气体浓度信号传送到中央处理单元(41 ),其还连接到压力传感器(19,20)和气体传感器(21),气体传感器(21)发出关于在壳体(4)或气体入口管线(10)的内部的每一瞬间主要的气体压力的附加信号,并且涉及 将烘箱环境中的中央处理单元(41)的气体浓度依次按照预先设定的程序分别致动气体入口和出气阀(分别为25,30和18,28),并转动 电动鼓风机单元(12,13)和加热单元(15,15a ...)之间的开/关。