| 摘要 |
The method of the control of an active charge surface in the low pressure carburizing process, in the pressure scope from 0.1 to 10 kPa, and in the temperature scope 800 to 1100°C, wherein the signals, reflecting the mass flow of the outlet gas sample, collected in the time interval between 30 th and 300 th second of the continuing first phase of carbon boost, are transmitted to the expert system in order to compare with the experimentally set in the function of the active charge surface with model characteristics for their indicators, and to estimate the correction for the estimated charge surface, one which was accepted in the system. The measurement system comprises, connected to the technological complex of a pomp or a set of vacuum pumps (8) and vacuum furnace (10), the returnable by-pass circuit with the mass flow signal transducer (5) of outlet gas sample and calibration valve (6), connected by means of the reference valve (4) with a system which supplies reference gases meant for the system calibration. |
