法(fa)(fa)(fa)蘭連(lian)接的(de)(de)完整性對(dui)于輸送流(liu)體管(guan)道(dao)系(xi)統至關重要。 無論(lun)是輸送液(ye)體管(guan)道(dao)系(xi)統,還是氣體管(guan)線,法(fa)(fa)(fa)蘭連(lian)接泄漏都 會造成(cheng)嚴重的(de)(de)環(huan)境(jing)及經濟影(ying)響, 甚(shen)至可能帶(dai)來(lai)巨(ju)大的(de)(de)安(an)全隱患。 如果 法(fa)(fa)(fa)蘭沒有采(cai)取保護措(cuo)施,暴露(lu)在腐(fu)蝕性環(huan)境(jing)或受污染的(de)(de)工業大氣中, 腐(fu)蝕速率會很快。通常技術人員更(geng)關心法(fa)(fa)(fa)蘭面之間出現的(de)(de)泄漏問題(市(shi)面上有不少法(fa)(fa)(fa)蘭帶(dai)+填(tian)料+單(dan)向閥系(xi)統),而忽略了對(dui)緊固件(jian)與管(guan)道(dao)外部(bu)的(de)(de)保護, 在惡(e)劣的(de)(de)外部(bu)環(huan)境(jing)中 可能會造成(cheng)極為
2023-07-31 hualin
帶(dai)銹(xiu)(xiu)(xiu)涂(tu)料是保(bao)(bao)護金(jin)屬的(de)底漆,直接(jie)涂(tu)刷(shua)于(yu)殘余銹(xiu)(xiu)(xiu)蝕(shi)的(de)的(de)金(jin)屬表(biao)面,與銹(xiu)(xiu)(xiu)蝕(shi)物(wu)質產生反應(ying),將有害物(wu)質轉變(bian)為(wei)有益物(wu)質,并且可(ke)以對(dui)金(jin)屬起到防(fang)腐(fu)蝕(shi)保(bao)(bao)護的(de)作用。使用帶(dai)銹(xiu)(xiu)(xiu)底漆,不需要進行機(ji)械打磨或者(zhe)噴(pen)砂表(biao)面處理,只(zhi)需要清理表(biao)面污(wu)染(ran)物(wu)和松動的(de)嚴重銹(xiu)(xiu)(xiu)層,自來水沖洗干凈(jing)就OK了,這樣就可(ke)以減輕除銹(xiu)(xiu)(xiu)工作量(liang),改(gai)善勞動條件,提高生產效益,適應(ying)環保(bao)(bao)形勢,在防(fang)腐(fu)蝕(shi)表(biao)面處理工序中(zhong)有著不可(ke)估量(liang)的(de)意義(yi)。 鐵銹(xiu)(xiu)(xiu)是一種金(jin)屬腐(fu)蝕(shi)物(wu)質,其
2023-07-18 hualin
變(bian)(bian)壓(ya)(ya)(ya)(ya)整(zheng)流(liu)電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)是(shi)陰極保(bao)護中(zhong)常(chang)用(yong)(yong)(yong)的(de)(de)一種(zhong)設備,其主(zhu)要功能(neng)是(shi)將交流(liu)電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)轉換為(wei)規(gui)定(ding)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)的(de)(de)直流(liu)電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan),以(yi)便用(yong)(yong)(yong)于(yu)陰極保(bao)護裝(zhuang)置的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)供(gong)應(ying)。在變(bian)(bian)壓(ya)(ya)(ya)(ya)整(zheng)流(liu)電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)中(zhong),調節(jie)輸(shu)(shu)(shu)出(chu)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)的(de)(de)主(zhu)要方法是(shi)通過(guo)調節(jie)變(bian)(bian)壓(ya)(ya)(ya)(ya)器的(de)(de)輸(shu)(shu)(shu)出(chu)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)來實(shi)現的(de)(de)。具體來說,該電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)的(de)(de)輸(shu)(shu)(shu)出(chu)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)是(shi)由變(bian)(bian)壓(ya)(ya)(ya)(ya)器的(de)(de)輸(shu)(shu)(shu)入(ru)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)和輸(shu)(shu)(shu)出(chu)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)決定(ding)的(de)(de),因此(ci)在設計中(zhong)可以(yi)通過(guo)調整(zheng)變(bian)(bian)壓(ya)(ya)(ya)(ya)器的(de)(de)輸(shu)(shu)(shu)入(ru)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)和輸(shu)(shu)(shu)出(chu)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)來達到調節(jie)輸(shu)(shu)(shu)出(chu)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)的(de)(de)目(mu)的(de)(de)。為(wei)了實(shi)現電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)調節(jie)的(de)(de)精度和穩定(ding)性,變(bian)(bian)壓(ya)(ya)(ya)(ya)整(zheng)流(liu)電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)通常(chang)采用(yong)(yong)(yong)反饋控制電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)
2023-07-10 hualin
鹽(yan)酸(suan)是一(yi)種強的(de)(de)還原性(xing)酸(suan),具有(you)很強的(de)(de)腐蝕(shi)性(xing),只有(you)一(yi)些(xie)貴金(jin)屬如鉭、鉑、金(jin)、銀和少數合(he)金(jin)如鎳(nie)鉬(mu)鐵合(he)金(jin)和含鉬(mu)高(gao)硅鐵對(dui)鹽(yan)酸(suan)有(you)良(liang)好的(de)(de)耐腐蝕(shi)性(xing)能。普通碳鋼及(ji)(ji)不銹(xiu)鋼在鹽(yan)酸(suan)介質環境中腐蝕(shi)十分(fen)嚴重(zhong);而大部分(fen)非金(jin)屬材料對(dui)鹽(yan)酸(suan)具有(you)良(liang)好的(de)(de)耐腐蝕(shi)性(xing)能,如玻(bo)璃、陶瓷、碳、石墨、橡膠(jiao)、塑(su)料等,一(yi)些(xie)樹(shu)脂及(ji)(ji)樹(shu)脂配制成的(de)(de)涂料對(dui)鹽(yan)酸(suan)生(sheng)產設(she)備(bei)、使用設(she)備(bei)及(ji)(ji)儲罐(guan)儲槽等設(she)施(shi)也(ye)有(you)優良(liang)的(de)(de)耐蝕(shi)耐腐蝕(shi)性(xing)能。許(xu)多(duo)工業工程(cheng)項目中的(de)(de)生(sheng)產設(she)備(bei)、倉儲槽罐(guan)、管道設(she)
2023-06-29 hualin
尿(niao)素是(shi)一(yi)種(zhong)高(gao)效的(de)(de)氮(dan)肥(fei),屬(shu)于中(zhong)性(xing)有(you)機(ji)鹽(yan),因為分(fen)子結(jie)構中(zhong)含有(you)氨基,所以偏堿性(xing)。正常的(de)(de)干燥環境中(zhong),尿(niao)素對混凝(ning)土(tu)(tu)(tu)沒有(you)腐(fu)蝕作(zuo)用;而在(zai)潮(chao)濕環境下尿(niao)素會對混凝(ning)土(tu)(tu)(tu)具(ju)有(you)嚴重的(de)(de)腐(fu)蝕破壞(huai)作(zuo)用。尿(niao)素能夠在(zai)空氣中(zhong)吸收水分(fen),形成(cheng)一(yi)種(zhong)氨水電(dian)解(jie)質溶(rong)液,就是(shi)尿(niao)液,而且滲(shen)透性(xing)很強,極易滲(shen)透到混凝(ning)土(tu)(tu)(tu)內(nei)部甚至是(shi)密(mi)實的(de)(de)混凝(ning)土(tu)(tu)(tu)內(nei)部,對混凝(ning)土(tu)(tu)(tu)及(ji)內(nei)部鋼筋造成(cheng)腐(fu)蝕危害。因此(ci)生(sheng)產(chan)尿(niao)素的(de)(de)主要(yao)設(she)施--尿(niao)素造粒(li)塔,是(shi)一(yi)種(zhong)混凝(ning)土(tu)(tu)(tu)結(jie)構建筑物,其腐(fu)蝕控(kong)制(zhi)顯得(de)非
2023-06-14 hualin
瀝(li)(li)青(qing)(qing)是一種(zhong)暗褐色或黑色的(de)(de)固態或半(ban)固態粘稠狀物質(zhi),主要由(you)高分(fen)子烴(jing)類和(he)非烴(jing)類組成,可溶于(yu)苯(ben)、二硫化碳和(he)三氯乙(yi)烯(xi)等(deng)有機溶劑(ji),在自然界中天然存在或由(you)石油煉制(zhi)過程(cheng)獲得。人類使用瀝(li)(li)青(qing)(qing)至今(jin)已經具有5000年的(de)(de)歷史(shi),如今(jin)這一材料依然在防(fang)水防(fang)腐(fu)領域發揮著(zhu)重要的(de)(de)作用。瀝(li)(li)青(qing)(qing)的(de)(de)主要特(te)性(xing)有:具有較高的(de)(de)感溫性(xing),同一瀝(li)(li)青(qing)(qing)處(chu)于(yu)不同的(de)(de)溫度下,會(hui)呈現出液體、固體、半(ban)固體等(deng)不同的(de)(de)形態; 較易老化,由(you)于(yu)瀝(li)(li)青(qing)(qing)的(de)(de)各個組成部(bu)分(fen)并不是穩定的(de)(de)化合
2023-05-30 hualin
玻璃鋼(gang)是以聚合(he)(he)物材(cai)(cai)料(liao)和纖維(wei)增強(qiang)材(cai)(cai)料(liao)復(fu)合(he)(he)而(er)成(cheng)的(de)具有優(you)異綜合(he)(he)性能(neng)的(de)新(xin)型材(cai)(cai)料(liao)。其比一般(ban)的(de)鋼(gang)材(cai)(cai)和高分(fen)子材(cai)(cai)料(liao)的(de)比強(qiang)度、比模量(liang)要高出(chu) 1~5 倍,用(yong)復(fu)合(he)(he)材(cai)(cai)料(liao)做成(cheng)的(de)產(chan)品(pin)(pin)重量(liang)輕(qing)、強(qiang)度高、剛性大,耐(nai)腐蝕,是一種(zhong)理想的(de)工業及(ji)民用(yong)新(xin)材(cai)(cai)料(liao)之一。目前世界(jie)復(fu)合(he)(he)材(cai)(cai)料(liao)及(ji)制品(pin)(pin)的(de)產(chan)量(liang)約(yue)為 600 萬(wan)噸,每年仍以 10%的(de)速度在增長。美國 1996 年復(fu)合(he)(he)材(cai)(cai)料(liao)制品(pin)(pin)產(chan)量(liang)為 146 萬(wan)噸,其中在汽車等交(jiao)通領域45 萬(wan)噸、占 31%,房屋建
2023-05-05 hualin
防腐與絕(jue)(jue)熱(re)(re)(re)在工(gong)程項目(mu)中經(jing)常是(shi)關聯在一起(qi)的(de)(de),最(zui)典(dian)型的(de)(de)案(an)列就是(shi)CUI(保溫(wen)層(ceng)下的(de)(de)腐蝕),即在控(kong)制能源損(sun)耗的(de)(de)同時(shi)還要阻止腐蝕的(de)(de)發生。這種控(kong)制能源損(sun)耗的(de)(de)方法,經(jing)常被習慣性的(de)(de)稱(cheng)為保溫(wen);其(qi)實是(shi)說對了(le)一半,另一半還有(you)保冷。按照規范的(de)(de)概念(nian)敘述(shu)就是(shi)保溫(wen)保冷合(he)在一起(qi)統稱(cheng)為絕(jue)(jue)熱(re)(re)(re)。根據GB/T 4272-2008《設備及管道絕(jue)(jue)熱(re)(re)(re)技術(shu)通則》:所謂(wei)絕(jue)(jue)熱(re)(re)(re),就是(shi)為了(le)減少設備,管道及其(qi)附件向(xiang)周圍(wei)環境散熱(re)(re)(re),在其(qi)外表面采取的(de)(de)增設絕(jue)(jue)熱(re)(re)(re)層(ceng)
2023-04-20 hualin