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碳化鉻NM360耐磨鋼管與雙金屬耐磨管的應用成本比較

更新時間:2020-03-24 19:24點擊次數:
目前市場NM360耐磨鋼管的價格是:雙金屬NM360耐磨鋼管每噸1.8萬元左右,鑄石NM360耐磨鋼管每噸1.3萬元,耐磨貼片管每噸1.7萬元。這幾類彎頭特別重,它們是以重量來謀利潤。也就是說,一個雙金屬NM360耐磨鋼管的價格是碳化鉻耐磨鋼管的兩倍,用一個雙金屬耐磨管的錢,可以買兩個碳化鉻耐磨鋼管,碳化鉻耐磨鋼管的使用壽命是這種雙金屬耐磨管的2-3倍,用價格與使用壽命比,也就是用1/5的雙金屬耐磨管的錢買一個碳化鉻耐磨鋼管。

     例如:2×800MW超臨界機組送粉管,管徑為φ520×10,采用雙金屬耐磨管,重量為W=1850kg,全部彎頭總重(2臺爐)約為500~600噸;而采用碳化鉻耐磨鋼管,其重量僅為W=480kg左右,全部彎頭總重(2臺爐)約為110~130噸;對比可看出,采用碳化鉻耐磨鋼管,最直接的是使輸送介質管重量大幅下降,投資至少節約200萬以上(雙金屬耐磨管單價按1.8萬元/每噸),還不包括重量下降使得煤倉間土建構架梁荷載的降低所帶來的經濟效益,以及支吊架材料的節省所帶來的經濟效益。
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