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OBSERVATION OF THE EFFECT OF SHOT BLASTED ON STEAM OXIDATIONRESISTANCE OF TP304H STEEL BOILER TUBING |
Xingeng Li;Jiawen He |
西安交通大学 |
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Abstract TP304H(0Cr19Ni9)steels with and without shot blast ing were tested in a reheater of 1000 t/h boiler for 7552 hours.The results sho w that shot blasting can decrease the thickness of oxide scale,and enhance the c ompactness of oxidation layer.Cr concentrating in the surface can prevent the ou t diffusion of Fe,and decrease the oxidation speed,thus effectively improve the steam oxidation resistance.The effects of shot blasted on oxidation mechanism ar e analyzed,and the oxidation process of the scale phase is also discussed.
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Received: 26 June 2002
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Corresponding Authors:
Xingeng Li
E-mail: lxgeng204@sohu.com
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