在造纸行业,铸铁造纸烘缸(以下简称烘缸)的使用数量越来越多,然而由于烘缸壁厚度较厚且使用压力低,有很多使用单位都认为烘缸一般不会出安全事故,对其安全状况比较轻视,检验检测机构则由于缺乏成熟的检验检测设备,以及国家没有出台相应的检验检测规范和标准,在对烘缸进行定期检验时也只进行常规的宏观检验。然而,烘缸在工作时会受到高温、高压水蒸汽的腐蚀,特 In the paper industry, the use of cast iron paper cylinder (hereinafter referred to as dryer cylinder) is more and more. However, due to the thick wall thickness and low pressure, many users think that the dryer cylinder will not be a safety accident. For its safety status is more contemptuously, the test and inspection organization lacks the mature inspection and test equipment and the country has not issued the corresponding inspection norms and standards. Only regular macro inspection is carried out when the dryer is regularly inspected. However, the dryer will be subject to high temperatures, high pressure steam corrosion, particularly