離心機(jī)防腐失效帶來的后果是災(zāi)難性的，會導(dǎo)致強(qiáng)度喪失而產(chǎn)生爆裂、泄漏污染甚至人身傷害，因此在選型時應(yīng)提供/獲得詳細(xì)的介質(zhì)理化數(shù)據(jù)，選擇恰當(dāng)?shù)牟牧稀?/span>
在選型時應(yīng)按所分離的腐蝕介質(zhì)以及濃度、溫度和其它因素（如雜質(zhì)、PH值、是否含有空氣，流動或靜止）等理化數(shù)據(jù)，選擇合適的材質(zhì)或表面涂層，滿足防腐要求。
不能忽略密封元件的防腐要求，密封件材質(zhì)應(yīng)確保防止酸堿、溶劑的腐蝕。
對于混酸或酸、鹽、溶劑的混合物，可以參考已經(jīng)驗證的的應(yīng)用實踐選擇滿足防腐要求的材料。在沒有對應(yīng)的腐蝕數(shù)據(jù)時，應(yīng)進(jìn)行掛片試驗、實驗室驗證，以確保材料選擇滿足防腐要求。
掛片試驗時，金屬或涂層材料浸入母液中，母液的溫度、濃度、PH值等應(yīng)與實際工況一致，以保證試驗環(huán)境的模擬可比性。但掛片試驗不能體現(xiàn)離心機(jī)實際工況中的應(yīng)力腐蝕和沖刷腐蝕，在選材時應(yīng)引起注意。
試驗掛片除了進(jìn)行外觀檢查還需要進(jìn)行化學(xué)成分和機(jī)械性能檢驗，幫助我們確定材料選擇是否合適。
滿足防腐要求（和滿足防爆要求），是離心機(jī)選型的首要條件!
Application of Anti-corrosion Technology in Centrifuge
Consequence of anticorrosion failure to the centrifuge is catastrophic. It can cause loss of strength, resulting in burst，leakage，pollution，and even personal injury.Therefore the user should provide whose obtained physical&chemical data of the medium. So that the supplier can well choose&confirm the appropriate materials.
The suitable material or surface coating should be selected according to the physical&chemical data of the separated corrosion medium，concentration, temperature and other factors(sueh as impurity，PH value，air, flow or static)etc. so that meet the anticorrosion requirements.
Never ignore the corrosion protection requirements of sealing components. The seal material should ensure to prevent acid, alkali, solvent corrosion.
For mixed acids or mixtures of acids, salts, and solvents，it is possible to select materials that meet the requirements of anticorrosion with reference to proven application practices. In the absence of corresponding corrosion data，relevant corrosion coupon test and Iab validation shall be conducted to ensure that the material selection meets the requirements of corrosion protection.
When conducting the corrosion coupon test，the metal or coating material is immersed in the mother liquor of corrosion medium，the temperature，concentration and PH value of the mother liquor should be consistent with the actual working conditions. in order to ensure the simulation comparability of the test environment. But the coupon test can not reflect the stress corrosion and scour corrosion in the actual working condition of centrifuge. it should be paid attention when selecting materials.
The coupon test still need chemical composition&mechanical properties tests except external inspection. So that help supplier determine whether the material selection is appropriate.
To meet the anti-corrosion requirements(and ex-proof) is the first condition of centrifuge selection!
離心機(jī)常用金屬材料：
奧氏體不銹鋼：304、321、316L
雙相不銹鋼：2205、2507
鈦材：TA1、TA2
表面防腐襯涂：HALAR、F40、F46、PFA；PE；襯橡膠
Metal material normally used in centrifuge:
Austenitic stainless steel: 304、321、316L
Duplex stainless steel: 2205、2507
Titanium material: TA1、TA2
Surface anticorrosive coating: HALAR、F40、F46、PFA; PE, Rubber Iiner
