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目前,国际上即使是工业发达的国家,如美国、苏联、日本等,对铸铁锅炉都没有强度计算的规定。但为了保证铸铁锅炉的强度及其安全,而采用根据不同的工作压力,对锅片壁厚加以强制性限制的方法,来保证强度。如日本工业标准JIS·B8203和日本劳动者颁布的锅炉构造规范中,都规定:在最高使用压力小于或等于0.3MPa(≈3kgf/cm~2)时,铸铁锅炉锅片的壁厚应在8mm,或8mm以上;最高使用压力超过0.3MPa(≈3kgf/cm~2)时,其壁厚须在10mm或10mm以上;但是,经过破坏性试验进行强度考核了的结构,就可不对壁厚加以限制,美国ASME第
At present, even the developed countries in the world, such as the United States, the Soviet Union and Japan, have no provisions on the strength calculation of cast iron boilers. However, in order to ensure the strength of cast iron boilers and their safety, but according to different working pressure, the thickness of the pot to impose mandatory restrictions on methods to ensure strength. Such as the Japanese industry standard JIS · B8203 and Japanese workers promulgated boiler construction specifications are provided: When the maximum operating pressure is less than or equal to 0.3MPa (≈ 3kgf / cm ~ 2), cast iron boiler boiler wall thickness should be 8mm , Or 8mm above the maximum pressure of more than 0.3MPa (≈ 3kgf / cm ~ 2), the wall thickness of 10mm or more to be 10mm or more, but after destructive testing strength assessment of the structure, you can not wall thickness Limitations, US ASME No.