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随着我国社会主义建设的飞跃发展,机械工业日益广泛采用气体渗碳、氰化等热处理。以提高机械另件的表面硬度、疲劳强度及抗蚀能力,使用的设备普遍采用的是RJJ等型炉。多年来我厂使用的井式气体渗碳炉(Π型炉)渗碳介质(煤油)是靠一个手动针阀调节器控制,供给量用每分钟滴数衡量。由于针阀的形状、位置、机械振动等原因,煤油滴数大小不
With the rapid development of China’s socialist construction, the mechanical industry is increasingly using gas carburizing, cyanidation and other heat treatment. In order to improve the mechanical surface hardness of other parts, fatigue strength and corrosion resistance, the use of equipment commonly used is RJJ type furnace. Over the years I plant gas well using gas carburizing furnace (Π-type furnace) carburizing medium (kerosene) is controlled by a manual needle valve regulator, the supply volume measured by the minute drops. Due to the needle valve shape, location, mechanical vibration and other reasons, the size of the number of drops of kerosene not