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耐腐蚀化工泵材质选型方法

水泵选型 卧泉泵业 743浏览 0评论

一直以来,腐蚀就是化工设备最头痛的危害之一,稍有不慎,轻则损坏设备,重则造成事故甚至引发灾难。据有关统计,化工设备的破坏约有60%是由于腐蚀引起的,因此在化工泵选型时首先要注意选材的科学性。通常有一种误区,认为不锈钢是“万能材料”,不论什么介质和环境条件都捧出不锈钢泵,这是很危险的。下面针对一些常用耐腐蚀化工泵介质谈谈选材的要点:

1.硫酸 作为强腐蚀介质之一,硫酸是用途非常广泛的重要工业原料。不同浓度和温度的硫酸对材料的腐蚀差别较大,对于浓度在80%以上、温度小于80℃的浓硫酸,碳钢和铸铁有较好的耐腐蚀性,但它不适合高速流动的硫酸,不适用作泵阀的材料;普通不锈钢如304(0Cr18Ni9)、316(0Cr18Ni12Mo2Ti)对硫酸介质也用途有限。因此输送硫酸的泵阀通常采用高硅铸铁(铸造及加工难度大)、高合金不锈钢(20号合金)制造。氟塑料具有较好的耐硫酸性能,采用衬氟泵(F46)是一种更为经济的选择。公司适用产品有:IHF塑料化工泵、PF(FS)强耐腐蚀离心泵、CQB-F氟塑料磁力泵等。

2.盐酸 决大多数金属材料都不耐盐酸腐蚀(包括各种不锈钢材料),含钼高硅铁也仅可用于50℃、30%以下盐酸。和金属材料相反,绝大多数非金属材料对盐酸都有良好的耐腐蚀性,所以内衬橡胶泵和氟塑料泵(如聚丙烯、氟塑料等)是输送盐酸的最好选择。公司适用产品有:IHF氟塑料化工泵、PF(FS)强耐腐蚀离心泵、CQ聚丙烯磁力泵(或塑料磁力泵)等。

皇冠即时比分3.XIAOSUAN YIBANJINSHUDADUOZAIXIAOSUANZHONGBEIXUNSUFUSHIPOHUAI,BUXIUGANGSHIYINGYONGZUIGUANGDENAIXIAOSUANCAILIAO,DUICHANGWENXIAYIQIENONGDUDEXIAOSUANDOUYOULIANGHAODENAIFUSHI,ZHIDEYITIDESHIHANMUDEBUXIUGANG(RU316、316L)DUIXIAOSUANDENAIFUSHIBUJINBUYOUYUPUTONGBUXIUGANG(RU304、321),YOUSHISHENZHIBURU。ERDUIYUGAOWENXIAOSUAN,TONGCHANGCAIYONGTAIJITAIHEJINCAILIAO。GONGSISHIYONGCHANPINYOU:DFL(W)HHUAGONGBENG、DFL(W)PHPINGBIHUAGONGBENG、DFCZLIUCHENGBENG、DFLZPZIXIHUAGONGBENG、IHXINGHUAGONGBENG、CQBCILIBENGDENG,CAILIAOWEI304。

皇冠即时比分4.CUSUAN TASHIYOUJISUANZHONGNAIFUSHIZUIQIANGDEWUZHIZHIYI,PUTONGGANGTIEZAIYIQIENONGDUHEWENDUDECUSUANZHONGDOUHUIYANZHONGFUSHI,BUXIUGANGSHIYOULIANGDENAICUSUANCAILIAO,HANMUDE316BUXIUGANGHAINENGSHIYONGYUGAOWENHEXICUSUANZHENGQI。DUIYUGAOWENGAONONGCUSUANHUOHANYOUQITAFUSHIJIEZHIDENGKEKEYAOQIUSHI,KEXUANYONGGAOHEJINBUXIUGANGBENGHUOFUSULIAOBENG。

5.JIAN(QINGYANGHUANA) GANGTIEGUANGFANYINGYONGYU80℃YIXIA、30%NONGDUNEIDEQINGYANGHUANARONGYE,YEYOUXUDUOGONGCHANGZAI100℃、75%YIXIASHIRENGCAIYONGPUTONGGANGTIE,SUIRANFUSHIZENGJIA,DANJINGJIXINGHAO。PUTONGBUXIUGANGDUIJIANYEDENAIFUSHIXINGYUZHUTIEXIANGBIMEIYOUMINGXIANYOUDIAN,ZHIYAOJIEZHIZHONGRONGXUSHAOLIANGTIEFENCHANRUBUTUIJIANCAIYONGBUXIUGANG。DUIYUGAOWENJIANYEDUOCAIYONGTAIJITAIHEJINHUOZHEGAOHEJINBUXIUGANG。GONGSIYIBANZHUTIEBENGJUNKEYONGYUCHANGWENDINONGDUJIANYE,TESHUYAOQIUSHIKECAIYONGGELEIBUXIUGANGBENGHUOFUSULIAOBENG。

6.AN(QINGYANGHUAAN) DADUOSHUJINSHUHEFEIJINSHUZAIYEANJIANSHUI(QINGYANGHUAAN)ZHONGDEFUSHIDOUHENQINGWEI,ZHIYOUTONGHETONGHEJINBUYISHIYONG。GONGSICHANPINDADUOSHIYONGYUANJIANSHUIDESHUSONG。

7.YANSHUI(HAISHUI) PUTONGGANGTIEZAILVHUANARONGYEHEHAISHUI、XIANSHUIZHONGFUSHILVBUTAIGAO,YIBANXUCAIYONGTULIAOBAOHU;GELEIBUXIUGANGYEYOUHENDIDEJUNYUNFUSHILV,DANKENENGYINLVLIZIERYINQIJUBUXINGFUSHI,TONGCHANGCAIYONG316BUXIUGANGJIAOHAO。GONGSIGELEIHUAGONGBENGDOUYOU316CAILIAOPEIZHI。

皇冠即时比分8.CHUNLEI、TONGLEI、ZHILEI、MILEI CHANGJIANDECHUNLEIJIEZHIYOUJIACHUN、YICHUN、YIERCHUN、BINGCHUNDENG,TONGLEIJIEZHIYOUBINGTONG、DINGTONGDENG,ZHILEIJIEZHIYOUGEZHONGJIAZHI、YIZHIDENG,MILEIJIEZHIYOUJIAMI、YIMI、DINGMIDENG,TAMENJIBENMEIYOUFUSHIXING,CHANGYONGCAILIAOJUNKESHIYONG,JUTIXUANYONGSHIHAIYINGGENJUJIEZHIDESHUXINGHEXIANGGUANYAOQIUZUOCHUHELIXUANZE。LINGWAIZHIDEZHUYIDESHITONG、ZHI、MIDUIDUOZHONGXIANGJIAOYOURONGJIEXING,ZAIXUANZEMIFENGCAILIAOSHIBIMIANCHUCUO。

HAIYOUXUDUOQITAJIEZHIBUNENGZAICIYIYIJIESHAO,ZONGZHIZAIXUANCAISHIQIEBUKESUIYIHEMANGMU,YINGDUOCHAYUEXIANGGUANZILIAOHUOJIEJIANCHENGSHUJINGYAN。

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