Bakin Karfe Fiber a cikin Muhalli masu lalacewa: Ruwa, Sinadarai da Gada

Labari

Yuni 15, 2019

A cikin yanayin chloride farashin naúrar fiber ba shine babban farashi ba. Tambayar ita ce ko ƙarfafawa yana nan a cikin shekara talatin.

Inda Fiber Plated Copper Ya Tsaya Aiki

Layin jan ƙarfe a kan filayen ƙarfe na ƙarfe yana da kauri kaɗan kaɗan. Yana rage lalata kuma yana inganta haɗin gwiwa tare da matrix siminti; ba ya bada kariya na dogon lokaci. A cikin busassun ciki, benaye na yau da kullun da yanayin waje mai laushi yana ɗaukar rayuwar ƙira. A cikin mahalli na chloride kamar bakin teku, ƙasa saline, tsire-tsire masu sinadarai da hanyoyin gishiri, chloride yana karya fim ɗin da ba a so, kuma da zarar layin jan ƙarfe ya lalace a cikin gida babban ƙarfe zai fara rami. Pitting ba a iya gani kuma mai zurfi, don haka a lokacin da tsatsa ta bayyana wani babban sashe ya riga ya tafi. Shi ya sa ayyukan ruwa da tankunan sinadarai ba sa amfani da zaren jan karfe.

Zabar Tsakanin 304 da 316L

Matsayin bakin ciki na yau da kullun shine 304, sama da 2000 MPa tensile kuma yana iya aiki zuwa 650 C, kuma yana fitar da fiber da aka ɗora ta hanyar faffadan fage a cikin feshin gishiri: kwanaki 180 na gwaji ya bar kawai 5.6% ƙarfin hasara, yayin da fiber da aka lalata ya tsatsa tun da daɗewa. 316L ya ƙunshi molybdenum kuma yana tsayayya da rami na chloride mafi kyau a farashi mafi girma. Zaɓin yana kunna maida hankali na chloride da zafin jiki: ruwan teku na yanayi da yanayin bakin teku yawanci yana da kyau tare da 304; high zafin jiki da high chloride, kamar yadda a cikin sinadaran reactors ko flue gas desulphurisation, kira ga 316L ko duplex. Zaɓin mafi girma ba ɓarna ba ne, amma yana da tsada; zabar ƙananan yana nufin spalling 'yan shekaru baya.

Menene Asara 5.6% Bayan Kwanaki 180 Ainihin Ma'anar

Lambar tana nufin wani abu ne kawai a kwatanta. Tsatsa mara ƙarancin carbon fiber a cikin kwanaki a cikin ɗakin feshin gishiri kuma ya rasa fiye da rabin ƙarfinsa a cikin kwanaki goma; Plated fiber yana rayuwa wata ɗaya ko biyu kafin rami ya hanzarta; 304 har yanzu yana da 94.4% na ƙarfinsa a cikin kwanaki 180. A cikin mahalli na ruwa iri ɗaya, fiber na bakin ciki don haka yana daɗe sau goma fiye da zaren da aka ɗora. Wannan ba wani ci gaba ba ne, bambanci ne tsakanin abin da ake iya amfani da shi da kuma wanda ba za a iya amfani da shi ba, domin an tsara gine-ginen ruwa na tsawon shekaru hamsin kuma babu wani abin rufe fuska da ya tsira da shekaru hamsin na chloride.

0.16, 0.22 da 0.75 mm: Diamita uku, Amfani uku

A 0.16 da 0.22 mm fiber shine micro waya, ana amfani dashi a cikin bangon bakin ciki, madaidaicin turmi, abubuwan UHPC da kuma ko'ina ana buƙatar hanyar sadarwa mai girma uku mai girma. A 0.75 mm darajar tsari ce, ana amfani da ita a cikin rufin gada kuma a matsayin maye gurbin ƙarfafawa na al'ada a cikin abubuwan ruwa. Micro waya yana ba da ƙarin zaruruwa da yawa a kowace kilogiram, don haka daidai gwargwado yana samar da hanyar sadarwa mai yawa kuma yana katse fashe masu kyau; Iyakarsa ba ta da ƙarfi a kowace fiber, don haka ba zai iya maye gurbin mashaya mai kauri ba. Yi yanke shawarar faɗin tsaga don sarrafawa da farko, sannan diamita.

Tankunan Sinadari da Sharar Ruwa

Lalata a cikin tankunan sinadarai yana zuwa daga hanyoyi uku: kafofin watsa labaru na acidic, chloride, da rigar da bushewar keke. Yin hawan keke shine mafi ƙarancin ƙima, saboda kankare a layin ruwa ana maimaita jika kuma ya bushe kuma yana lalata da sauri fiye da simintin da aka nutsar na dindindin. Hanyar da aka saba shine 304 ko 316L fiber kankare a ko'ina, tare da mafi girman sashi ko matsayi mafi girma a cikin gida a layin ruwa. Zurfin murfin shine sauran daki-daki: bakin fiber ba ya maye gurbin murfin, kuma fiber da aka fallasa a saman har yanzu ya zama wurin lalata, don haka takamaiman murfin dole ne a cika shi.

Teku-Crossing Bridge Deck Overlays

Littattafan gada a kan mashigar teku babban aikace-aikace ne mai daraja. Mai rufin bakin ciki ne, yawanci 60 zuwa 80 mm, yana ɗauke da lodin gajiyar abin hawa, kuma yana zaune a cikin chloride na ruwa, yanayi guda uku a lokaci ɗaya wanda fiber ɗin da aka ɗora ba zai iya rayuwa ba. Aiki yana amfani da micro waya mara ƙarfi ko 304 fiber a 1% zuwa 2% ta ƙarar, sau da yawa tare da polymer ko mashaya mai rufin epoxy. Yana da tsada a gaba, amma a kan babban gyare-gyare a kowace shekara biyar farashin rayuwa gabaɗaya yana da ƙasa. Abin da ya sa marine tenders akai-akai ƙayyadad da bakin zare da ƙin wani plated madadin.

The Stainless Cost Account: Lokacin Da Ya Biya Da Lokacin Da Yake Bata Kudi

Fiber na bakin karfe ya kai ninki shida zuwa goma abin da farashin waya mai sanyin jan karfe ya zana, don haka ba shine mafi kyawun zabi ba, shine kadai zabi. Ko yana da barata ya dogara da yanayi guda uku da ke riƙe lokaci ɗaya: rayuwar ƙira fiye da shekaru 15, chloride ko fallasa acid, da wurin da ba za a iya gyarawa ba ko kuma yana da tsada sosai don gyarawa. Zubar da kowa kuma an batar da kuɗin. Yana biya a fili a yankin magudanar ruwa na wani dandamalin teku, da tankin tanki na masana'antar sinadarai, yankin da ke kusa da babban gada na fadada haɗin gwiwa, da tankin iska na aikin ruwan sharar gida. A fili ba ya biya a bene na cikin gida, a cikin busasshen ginshiki, ko kan alfarwar da za a iya yin faci yadda ake so, inda waya da aka yi da jan karfe da mai hana lalata ya isa. A kan zaɓin daraja, 304 yana yin abin dogaro ƙasa da 200 ppm chloride, 316L yana ɗaukar molybdenum kuma yana riƙe da kusan 1000 ppm, kuma nutsewar ruwan teku ko de-kankara gishiri yana buƙatar 316L; 446 shine darajar zafi mai zafi mai kyau zuwa digiri 1400 amma ba ga chloride ba, don haka kar a sanya shi a wuri mara kyau. Abu ɗaya farashin ana mantawa da shi akai-akai: adadin bakin karfe ba zai iya kwafin adadi na ƙarfe na carbon kawai ba, saboda kewayon tensile ya bambanta kuma maƙasudin tauri iri ɗaya na iya buƙatar juzu'in juzu'i daban-daban, wanda ke cikin zance. Kwatanta yanki mai tsatsa bayan kwanaki 180 na feshin gishiri shine mafi kyawun hanyar kai-da-kai, don haka tambayi masu kawo bayanai a ƙarƙashin yanayin gwaji iri ɗaya maimakon kwatanta sunaye.

Lokacin Da Ya Cancanci Biyan Ƙari

Shawarar ta rage zuwa tambayoyi uku. Shin akwai chloride a cikin muhalli, daga ruwan teku, ƙasa saline ko gishiri mai cire ƙanƙara. Sinadarin siriri ne mai bango ko a cikin jika da bushewa. Shin rayuwar zane ta wuce shekaru talatin. Ee biyu amsoshi sun sa bakin bakin magana zabi mai ma'ana; daya ee yana ba da damar hanya ta wani yanki, bakin karfe a wurare masu mahimmanci kuma an sanya shi a wani wuri; uku babu amsoshi kuma plated fiber ya isa gaba ɗaya. Don maki, diamita da ƙimar zafin jiki, ɓangaren bakin karfe na shafin samfurin fiber na ƙarfe ya lissafa jeri na 304 da micro waya tare da diamita, tsayi da ƙarfi, waɗanda za a iya amfani da su kai tsaye azaman bayanan zaɓi.