离子氮化中,氨气(或氨氢混合气)的流量是控制氮化层质量的一项重要工艺参数。由于转子流量计结构简单,工作可靠,压力损失小,而且稳定,故都选用它来测量离子氮化过程中的进气量。 离子氮化炉内是真空条件,故用通用的流量计(一般标定时压力为180毫米水柱,调节伐在锥管的下端),测出的读数比实际气体流量大十几倍甚至几十倍,而且由于炉内压强变化,其读数所代表的流量也不是一个恒值。 In ion nitriding, the flow of ammonia (or ammonia-hydrogen mixture) is an important process parameter for controlling the quality of the nitride layer. Due to the simple structure of the rotor flowmeter, reliable, low pressure loss, and stable, it is used to measure the amount of intake air nitriding process. Ion nitriding furnace is a vacuum condition, it uses a common flow meter (usually calibrated pressure of 180 mm water column, adjust the cut in the lower end of the cone), measured readings than the actual gas flow ten times or even dozens of times , But also because of pressure changes in the furnace, the readings represented by the flow is not a constant value.