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國外閥門同類産品對國内閥門行業的影響

時間:2017/6/1 16:43:59 來源: 浏覽:
一般情況下,閥門是作為整機的某個部件而存在的,其材質、結構、加工工藝性、産品質量、可靠性,直接影響着整機的效率、能耗、污染、壽命和安全等各項關鍵指标。因而,閥門技術的現狀及其發展态勢,将引起新一輪的技術創新。
    國外同類産品對閥門行業的最大影響是對新材料的應用和對同類産品結構的調整及性能的延伸。這種影響很大,其程度不同。

    國外閥門新開發産品重點放在閥門新材料的應用上,由于現有的耐腐蝕閥門材料還不能完全滿足其技術發展的需要,超低碳不鏽鋼的閥門産量很少,因此國外閥業正在加速開發超低碳雙相不鏽鋼閥門。超低碳雙向不鏽鋼具有耐氯離子、硫化氫、二氧化碳、無機酸、有機酸等環境下的點腐蝕、晶間腐蝕、均勻腐蝕等能力。其次,國外閥業越來越重視其納米材料在閥門上的應用。納米技術是世界科技發展的前沿技術,納米塑料閥門的研究,在裝備制造業中納米材料隻能達到亞納米級,對制造閥門的粉體進行納米量級處理。原來的塑料顆粒比較大,經過新工藝處理,可以得到排列整齊,細微的粉體顆粒,經過燒結高溫壓鑄成形,得到閥門的整個腔體,此塑料閥門的具有很好的耐蝕性,很高的強度,可取代特殊的不鏽鋼閥門應用于石油、化工領域,尤其是火電廠的脫硫設備等強腐蝕的工況環境中。再者是用羰基法制成鎳基納米粉末,用激光塗覆技術或超音速塗覆技術,将鎳基納米粉末塗覆在密封面上,使密封面硬度可達HRC62~70,提高閥門的密封面的耐磨、耐沖刷、耐腐蝕性能,從而提高閥門的使用壽命。第四,是陶瓷在閥門上的應用,由于陶瓷可大大提高閥門的耐腐蝕性能,使用壽命及密封性能優于硬質合金,用陶瓷作密封副,如電站上應用的儀表閥門多為陶瓷球密封,有硬度高、耐高溫、使用壽命長等優點。第五,是開發用處不同的橡膠,如氫化丁腈橡膠(HNBR)就耐硫化氫的腐蝕,可以應用在閥門密封面上。在API 6A閘閥的閥座上就能應用氫化丁腈橡膠(HNBR),使該閘閥即壽命高又耐硫化氫腐蝕。

    國外同類産品的超前更新對我國閥門行業的影響主要表現在:對我國重點工程配套閥門産品的替代;占領其廣闊的市場;使我國閥門行業之間的市場競争加劇等等,從這點上講,國外同類産品對國内閥門行業的影響程度不能不說是又一值得憂慮的問題!

    所謂人無遠慮,必有近憂,上述閥門行業的近憂遠慮問題重視程度,可以說是評估各閥門企業能否做大做強的基礎。競争瞬息萬變,社會高速發展,滿足現狀就是落伍。所以,要不斷接受新事物、新觀念,善于創新進取,站高看遠,居安思危,才能求得全方位的視野,使企業健康、高速發展壯大。

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