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什么是深冷技術?

日期:2025-09-04 11:05
瀏覽次數:0
摘要:<p class="p" style="margin-left:0pt;text-indent:0pt;line-height:18pt;background:#FFFFFF;"> 什么是深冷技術?<o:p></o:p> </p> <p class="p" style="margin-left:0pt;text-indent:0pt;line-height:18pt;background:#FFFFFF;"> “深冷處理技術”或“超深冷處理技術”&nbsp;(簡稱“深冷技術”)是近年來興起的一種提高中**金屬工件強度和耐磨性能的新工藝。所謂深冷技術是利用冷媒介,比如液氮,作為冷卻介質,將淬火后的金屬材料進行深冷或接近**零度的超深冷處理,以改變金屬,以及工程塑料,陶瓷等材料的微細結構,從而提高材料的耐磨性,增加零部件的使用壽命。<o:p></o:p> </p> <p class="p" style="margin-left:0pt;text-indent:0pt;line-height:18pt;background:#FFFFFF;"> 金屬部件在淬火后,結構中不穩定的奧氏體會部分轉化為較穩定的馬氏體.但由于很多**合金的完全轉化溫度(Mf)可低達-200℃,&nbsp;一般淬火技術無法實現結構的完全轉變。只有在深冷處理過程中,金屬部件被冷卻到-200℃&nbsp;或以下,&nbsp;才能實現殘余奧氏體向馬氏體的完全轉化。同時在深冷條件下,亞穩定的馬氏體會降低過飽和度,析出和彌散尺寸僅為20~60&nbsp;?&nbsp;的超微細碳化物。這些細小彌散的碳化物在材料塑性變形時可以阻礙位錯運動,從而大大增強金屬部件的抗磨損能力。馬氏體晶格的改變也使金屬部件內部微觀應力降低,基體組織強化,從而使金屬部件的硬度、抗沖擊韌性和耐磨性都得以顯著提高<o:p></o:p> </p> <p class="p" style="margin-left:0pt;text-indent:0pt;line-height:18pt;background:#FFFFFF;"> 深冷技術不同于其他任何一種傳統表面處理技術之處,在于深冷技術引起的結構改變深及工件核心,是一種零部件的整體處理。因此被處理的部件可以反復磨用而不改變其性能。這種特點也進一步數倍地延長了部件的使用壽命。<o:p></o:p> </p> <p class="p" style="margin-left:0pt;text-indent:0pt;line-height:18pt;background:#FFFFFF;"> 深冷技術在處理金屬部件時不僅不改變部件尺寸大小,相反,處理過程會減少淬火產生的內應力,&nbsp;從而增強尺寸穩定性。<o:p></o:p> </p> <p class="p" style="margin-left:0pt;text-indent:0pt;line-height:18pt;background:#FFFFFF;"> 深冷技術是目前提高金屬材料工件性能*有效,*經濟的高新技術。特點為耗材,耗電少,無任何環境污染,是一種**的環保技術。目前該技術已經在航天、船舶、**、制造業、汽車、五金工具、體育器材等行業中得到廣泛的應用。<o:p></o:p> </p> <p class="p" style="margin-left:0pt;text-indent:0pt;line-height:18pt;background:#FFFFFF;"> <a href="http://www.jbwshoes.cn/s04/cryo-asc/yjml/20150601/3375943/1.html" target="_blank">深冷處理設備</a>引進國際上目前***的現代深冷技術和設備。我公司所研制的*新設備其與其他設備*大不同之處就是可以在同一設備內進行深冷和超深冷處理并可以在同一設備中連續進行+200℃至-196℃之間的冷熱溫度沖擊,使金屬材料部件可以更好的適應不同的溫度要求,發揮深冷處理的*大效應。 </p> <p class="p" style="margin-left:0pt;text-indent:0pt;line-height:18pt;background:#FFFFFF;"> &nbsp; </p>

什么是深冷技術

“深冷處理技術”或“超深冷處理技術” (簡稱“深冷技術”)是近年來興起的一種提高中**金屬工件強度和耐磨性能的新工藝。所謂深冷技術是利用冷媒介,比如液氮,作為冷卻介質,將淬火后的金屬材料進行深冷或接近**零度的超深冷處理,以改變金屬,以及工程塑料,陶瓷等材料的微細結構,從而提高材料的耐磨性,增加零部件的使用壽命。

金屬部件在淬火后,結構中不穩定的奧氏體會部分轉化為較穩定的馬氏體.但由于很多**合金的完全轉化溫度(Mf)可低達-200℃, 一般淬火技術無法實現結構的完全轉變。只有在深冷處理過程中,金屬部件被冷卻到-200℃ 或以下, 才能實現殘余奧氏體向馬氏體的完全轉化。同時在深冷條件下,亞穩定的馬氏體會降低過飽和度,析出和彌散尺寸僅為20~60 ? 的超微細碳化物。這些細小彌散的碳化物在材料塑性變形時可以阻礙位錯運動,從而大大增強金屬部件的抗磨損能力。馬氏體晶格的改變也使金屬部件內部微觀應力降低,基體組織強化,從而使金屬部件的硬度、抗沖擊韌性和耐磨性都得以顯著提高

深冷技術不同于其他任何一種傳統表面處理技術之處,在于深冷技術引起的結構改變深及工件核心,是一種零部件的整體處理。因此被處理的部件可以反復磨用而不改變其性能。這種特點也進一步數倍地延長了部件的使用壽命。

深冷技術在處理金屬部件時不僅不改變部件尺寸大小,相反,處理過程會減少淬火產生的內應力, 從而增強尺寸穩定性。

深冷技術是目前提高金屬材料工件性能*有效,*經濟的高新技術。特點為耗材,耗電少,無任何環境污染,是一種**的環保技術。目前該技術已經在航天、船舶、**、制造業、汽車、五金工具、體育器材等行業中得到廣泛的應用。

深冷處理設備引進國際上目前***的現代深冷技術和設備。我公司所研制的*新設備其與其他設備*大不同之處就是可以在同一設備內進行深冷和超深冷處理并可以在同一設備中連續進行+200℃至-196℃之間的冷熱溫度沖擊,使金屬材料部件可以更好的適應不同的溫度要求,發揮深冷處理的*大效應。

 

蘇公網安備 32021402000981號

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