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當前位置:草莓视频下载app无限观看>新聞資訊>濟南鍍鋅管生產廠家講解管道腐蝕問題

濟(ji)南鍍鋅(xin)管(guan)生產廠家講解管(guan)道腐蝕問題(ti)

來源:http://atcasummit.com/ 日期:2019-11-05 發布人:admin

  鋼管具有性能好、強度高等優點,在工業生產中是非常常見的應用,為了充分發揮鋼管的良好性能,有時必須對鋼管進行鍍鋅維護,這樣才能提高他的使用年限。 鍍鋅管具有耐腐蝕和使用壽命長的雙重優點,且價格相對較低,因此目前其應用率越來越高, 特別是作為一種常用的運輸排水管。

  Steel pipe has the advantages of high strength and good performance, which has been widely used in industrial production. In order to give full play to the good performance of steel pipe, sometimes the steel pipe must be galvanized for maintenance, so as to improve its service life Galvanized pipe has the double advantages of corrosion resistance and long service life, and the price is relatively low, so its application rate is more and more high, especially as a commonly used transportation drainage pipe.
  這時,有人會問,鍍鋅管用作運輸水的管道會不會生銹?
  At this time, someone will ask if the galvanized pipe used for water transportation will rust?
濟南鍍鋅管
  由于鋼管的腐蝕必須滿足兩個條件,一可以說是水分,二就是極其重要的空氣(也就是氧氣)。
  Because the corrosion of steel pipe must meet two conditions, one is moisture, the other is extremely important air (i.e. oxygen)。
  然后鋼管作為給水管道,在日常條件下是永遠是充滿水的,而在滿水條件下是不易生銹的。
  Then as a water supply pipe, the steel pipe is always full of water under daily conditions, and it is not easy to rust under full water conditions.
  也就是說,由于管道充滿水,水中溶解氧有限,管壁也有鍍鋅防腐層,這兩條原因,即可大大減少鍍鋅管遭受腐蝕的幾率。
  That is to say, because the pipe is full of water, the dissolved oxygen in the water is limited, and the pipe wall also has galvanized anti-corrosion coating, these two reasons can greatly reduce the probability of galvanized pipe suffering from corrosion.
  然而,這并不意味著可以完全控制腐蝕,
  However, this does not mean that corrosion can be completely controlled,排水管就是個特例,排水管不會每日都是充滿的狀態,而且排水系統還將排放局部腐蝕性污水,鍍鋅管很快就會被腐蝕。
  The drain pipe is a special case, the drain pipe will not be full every day, and the drainage system will also discharge local corrosive sewage, and the galvanized pipe will be corroded soon.
  鍍鋅工藝的一些注意事項:
  Some precautions for galvanizing process:
  1.鍍鋅管鍍鋅的前提是在焊接處打磨掉鍍鋅層,否則會產生氣泡、沙眼、虛焊等。它也會使焊縫變脆和堅硬。
  1. The premise of galvanized pipe galvanizing is to polish off the galvanized layer at the welding position, otherwise bubbles, sand holes, false welding, etc. will occur. It also makes the weld brittle and hard.
  2.鋅和鐵可以形成金屬間脆性化合物。這些脆性相降低了焊接金屬的塑性,并在拉伸應力下導致裂紋如果焊接角焊縫,特別是T型接頭的角焊縫,則最有可能發生熔透裂紋。
  2. Zinc and iron can form intermetallic brittle compounds. These brittle phases reduce the plasticity of the weld metal and lead to cracks under tensile stress. If the weld fillet, especially the T-joint fillet, is most likely to have penetration cracks.
  3.在鍍鋅鋼的焊接過程中,溝槽表面和邊緣處的鋅層會在電弧熱作用下產生氧化、冷凝和蒸發,從而使白煙和蒸汽揮發,容易造成焊縫氣孔。
  3. In the welding process of galvanized steel, the zinc layer on the surface and edge of the groove will generate oxidation, condensation and evaporation under the action of arc heat, which will make white smoke and steam volatilize and easily cause weld porosity.
  4.由于鋅的蒸發,大量白煙揮發,對人是有刺激和危害。因此,有必要對焊接處的鍍鋅層進行打磨和處理。
  4. Due to the evaporation of zinc, a lot of white smoke volatilizes, which is harmful to people. Therefore, it is necessary to polish and treat the galvanized layer at the welding position.
  5個小心處理左側附近的槽尺寸和鍍鋅層集中坡口,無鈍邊,停止集中控制,兩層焊接工藝,減少未焊透的可能性。
  5 groove sizes near the left side and centralized groove of galvanized layer shall be handled carefully, without blunt edge, centralized control shall be stopped, and two-layer welding process shall be carried out to reduce the possibility of incomplete penetration.
  6.焊接方法:多層焊的第一層焊接時,盡量將鋅層冷凝,蒸發蒸發,使其從焊縫中逸出,可大大減少焊縫中殘留的液態鋅。
  6. Welding method: when welding the first layer of multi-layer welding, try to condense and evaporate the zinc layer to make it escape from the weld, which can greatly reduce the residual liquid zinc in the weld.
好了,以上就是濟南樂豪金屬為大家講解的小知識,如果您想了解更多,可以訪問我們的官網:http://atcasummit.com。

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