我厂采用固体渗碳,渗碳箱是圆筒形的,过去装炉是将渗碳箱躺倒、箱口向外来渗碳的,后来发现渗碳层不均匀,渗碳箱口部、中部和底部相差0.2～0.3毫米,而一般零件要求的渗碳层深度变化范围也只有0.2～0.3毫米(如:0.8～1.0毫米,1.0～1.3毫米),这样无法达到技术要求。后来我们采 I plant the use of solid carburizing, carburizing box is cylindrical, the past furnace is to lie down carburizing box, box to the outside carburizing, carburizing layer later found uneven, carburizing box mouth, central And the bottom of a difference of 0.2 ~ 0.3 mm, while the general requirements of the carburizing layer depth of only 0.2 to 0.3 mm (eg: 0.8 to 1.0 mm, 1.0 to 1.3 mm), so can not meet the technical requirements. Later we adopted