【摘要】 对某公司送来的断裂的省煤器蛇形管弯头51×6.5 mm的20G进行了分析,分析结果表明20G钢管的化学成分、力学性能、金相组织和晶粒度等均符合B5310-1995的要求,断口处和裂纹附近的硬度值高,是快速断裂的原因之一。更多还原

【Abstract】 According to the rupture analysis of economizer pipe coil bend 51×6.5 mm for 20G,it illustrates the chemieal composition,mechanics performance,metallurgical component and grain size comply with the requirement of B5310-1995.The high hardness of break and crack border is one of the reasons that fast rupture.更多还原