硫酸中常用材料的耐腐蚀曲线图

Click to edit Master text styles,Second level,Third level,Fourth level,Fifth level,Click to edit Master title style,Sulphuric,acid,Slide,*,对冷却水中氯离子的耐腐蚀曲线,10,10,2,10,3,10,4,10,5,0,50,100,Temperature,C,No,corrosion,316,C-276,254,SMO,Crevice,corrosion,D-205,pH=min 7.0,ppm,chlorides,Sulphuric,acid,Typical Composition of Metals for Use in Heat Exchangers in H,2,SO,4,Processing,N 0.2,W,W 3,Fe 2-6,W 2.5,Fe 18-21,Si 5,Fe 6,Si max.0.08,AISI 316,Avesta,254 SMO,Alloy C-276,Hastelloy,C-22,Hastelloy,G-30,Hastelloy,D-205,Hastelloy,C-2000,17.0,20.0,15.5,21.0,29.5,20.0,23.0,12.0,18.0,58.0,44.0,40.0,64.5,59.0,2.0,6.1,16.0,13.5,5.0,2.5,16.0,0.7,1.7,2.0,1.6,Others,Cr,Nickel,Mo,Cu,Composition,Sulphuric,acid,Iso-corrosion diagram 0.1 mm/year,Diabon,Hastelloy,D-205,254 SMO,Hastelloy,C-276,Alloy G-30,AISI 316,AISI 316,150,100,50,0,C,150,100,50,0,C,0,10,20,30,40,50,60,70,90,80,100%,硫酸中常用材料的耐腐蚀曲线图,Sulphuric,acid,硫酸板式换热器使用材料：,稀酸：镍合金,SMO254:,浓度,10,以下，温度,75,以下，,Cl,根,3000ppm,氟离子,1000ppm,以下,;,浓酸：哈氏合金,C276,：浓度,93,以上，温度,90,以下,密封垫片：稀酸三元乙丙橡胶,EPCM,，浓酸氟橡胶,FKMG,，半焊接式换,热器板片密封可不用氟橡胶,铜电解液换热器使用材料,：在介质浓度不变的条件下，影响腐蚀的二大因素是温度和接口流速；,硫酸下使用的材料：,SMO254,和哈市合金,G30,（比,C276,耐,Cl,根和氟根优越）,Ti,：在硫酸铜介质中，可到,105,接口流速对板片腐蚀的影响,：通常金属表面形成的氧化膜抵抗介质的腐蚀，,大多数氧化膜对流速是敏感的；,板式换热器中，通道流速，分流区和接口流速中，接口流速最快，当电解液循环流量超过设计流量时，接口流速增加,Sulphuric,acid,Plate-main components,Thin sheet design,cold formed in single step hydraulic,pressing(up to 40000 tons),Main heat transfer,area,Distribution,area,Suspension,Inlet/outlet,Passing through,Gasket in gasket,groove,Leak,chamber,Sulphuric,acid,Unique 5-point alignment system,Provides exact positioning of the plates horizontally and vertically,Ensures good sealing throughout the plate pack,Carrying bar,Guiding bar,Plate,Frame-M15 and larger,Sulphuric,acid,