I-Anticorrosion Of Ductile Iron Pipe Zinc Ungqimba

Ngokusetshenziswa okusheshayo nokusakazekile kwamapayipi wensimbi e-ductile embonini yamanzi negesi, umkhiqizo waseChina wonyaka ukhuphukile usuka kumathani ayi-100,000 ngo-1990 waya kumathani ayi-900,000 ngo-2001, okubalwa ngaphezu kuka-50% wokukhishwa okuphelele konyaka kwamapayipi wensimbi asakazwayo. I-anti-corrosion yepayipi yensimbi ye-ductile ihlobene ngqo nokusetshenziswa kwesikhathi eside nokuphepha kwepayipi, ngakho-ke kuyinkomba ebalulekile yokukala ubuchwepheshe nezimo zokusebenza kwenethiwekhi yepayipi. Ngokuya ngemiphumela yocwaningo yamadolobha ajwayelekile ayi-10, izinga lokuvuza okungaguquguquki kwenethiwekhi yamapayipi okuhambisa amanzi eChina lafinyelela ku-12 ~ 13%, okwedlula kude izinga likazwelonke lokuthi isilinganiso sokuvuza emadolobheni kufanele silawulwe ngaphansi kuka-6%. Ngakho-ke, i-anti-corrosion yepayipi ibilokhu iyisihloko esishisayo kithina. Isihloko.

Njengamanje, amapayipi ensimbi adonswayo asebenzisa ulwelwesi lwesamente njengefomu langaphakathi lokulwa nokugqwala, ne-zinc kanye ne-asphalt njengefomu lokulwa nokugqwala kwangaphandle, futhi kwenziwe enqubweni yokukhiqiza, ngaphandle kwesidingo sokwelashwa okulwa nokugqwala ngemuva kokwakhiwa kanye ukufakwa. Lokhu sekuwumkhuba ojwayelekile wabenzi bepayipi le-ductile yensimbi ekhaya naphesheya, nomphumela wokulwa nokugqwala nawo usobala kakhulu.　　

Ku-Article 4.4.2.2 ye- "Pipe Fittings" naku-Article 4.4 ye-standard standard ye-ISO 8179-1: 1995 (E) "Nodular cast iron pipe-Outer coating-Part I", kucaciswe ngokusobala ukuthi ubukhulu be-zinc ungqimba ngeke lube phansi Ku-130g / m2, ubukhulu bendawo bendawo abuzukuba ngaphansi kuka-110g / m2. Ku-GB / T17456-1998 kazwelonke ejwayelekile yase-China, i-standard standard ye-ISO 8179-1: 1995 yamukelwa ngokufanayo.

Kunezifundo ezimbalwa uma kuqhathaniswa nokulwa nokugqwala kwezingubo ze-zinc eChina, kepha phesheya, ikakhulukazi iSanta-Gobain Musong Bridge, ucwaningo lokulwa nokugqwala kwezingubo ze-zinc lunomlando weminyaka engaphezu kwengu-60. Kumazinga angaphakathi eSaint-Gobain Musong Bridge, ifomu le-zinc + asphalt langaphandle lokulwa nokugqwala linqunywa njengolwelwesi olujwayelekile lwangaphandle lokulwa nokugqwala kwamapayipi wensimbi e-ductile, futhi ilungele izinhlobo eziningi zenhlabathi. Ngasikhathi sinye, lokhu futhi kuyipayipi le-ductile lensimbi lamazwe athuthukile njenge-Europe. Imodi ejwayelekile yokulwa nokugqwala kwangaphandle.

Ukugqwala Komhlabathi Ku-Ductile Iron Pipe

1. Ukugqwala kwe-Electrochemical

Ukuxhumana phakathi kwensimbi nesisombululo se-electrolyte kuzokhiqiza umphumela we-electrochemical, futhi kuzoba nomehluko ongaba khona phakathi kobuso nesisombululo, okungukuthi, amandla we-electrode. Ubuso bensimbi bungaba nezigaba ezahlukahlukene ngenxa yemingcele ehlukene yokusanhlamvu, ukukhubazeka kwe-crystal, ukufakwa, ukucindezeleka nokulimala kwendawo. Lawa ma-inhomogeneities kagesi enza amandla we-electrode ezingxenyeni ezahlukahlukene ezincanyana zobuso bensimbi abe ahlukile, akha iseli lokugqwala. Ama-electron alahlekile engxenyeni engaba namandla amancane aba yi-ion yensimbi futhi afaka isixazululo, esibizwa nge-anode; ama-electron agelezela engxenyeni ephezulu yamandla futhi abe yi-cathode. Ngenxa yalokhu kusabela kwe-galvanic, kwakheka inani elikhulu lokugqwala ebusweni bensimbi.

Oxygen okuhlushwa umehluko ibhethri lepayipi le-ductile yensimbi: Lapho ipayipi le-ductile yensimbi lingcwatshwe emhlabathini omanzi, ukugcwaliswa okuphezulu ngenhla kukhululekile futhi kusondele emhlabathini, kanti phansi kungumhlabathi wokuqala, inhlabathi iminyene futhi ikude kusukela emhlabathini. Lapho umoya-mpilo ungena usuka phezulu, uzodala umehluko ekugxileni komoya-mpilo ngenhla nangaphansi kwepayipi, futhi ipayipi uqobo lwayo liyi-electrode kanye nocingo oluxhuma i-electrode; amanzi yi-electrolyte, ngakho-ke kwakhiwa "ibhethri lokwehluka lokuhlushwa komoya-mpilo". I-Iron ilahlekelwa ama-electron bese ingena kwifilimu yamanzi, futhi i-oxygen ithola ama-electron abe ama-ion e-hydroxide.

2. Ukugqwala kwamagciwane

Ukugqwala kwamagciwane kubuye kube uhlobo lokugqwala kwe-electrochemical. Umehluko ukuthi okuphakathi kushintsha ezinye izakhiwo zomzimba nezamakhemikhali esibonakalayo esibonakalayo lapho kuthintwa khona ngenxa yokuzala nokwenziwa komzimba kwamagciwane abolayo. Ngokwesiko, ingahlukaniswa ibe ukugqwala kwe-anaerobic kanye ne-aerobic corrosion.

Ama-bacterium anciphisa i-Sulphate SBR yimbangela yezimpande ezicwaningwe kakhulu ezibangelwa ukugqwala phakathi kwezilwanyana ezincane. UVon Wogozen Kuhr et al. bahlongoza umbono we-classic depolarization theory ngo-1974. Babekholelwa ukuthi ukubola kwemigodi yamapayipi ensimbi angcwatshwayo kungenxa yomsebenzi we-SBR wokuqeda insimbi nge-hydrogenase. Ifomula yokuphendula ejwayelekile imi kanjena:

I-4Fe + SO42- + 4H2O 3Fe (OH) 2 + FeS + 2OH-

Ama-bacterium e-aerobic amabhaktheriya e-iron oxidizing, ama-sulfide bacteria kanye ne-iron bacteria. I-sulfuric acid ekhiqizwa isenzo se-sulfur bacteria ingadala ukubola kwe-aerobic. Lawa mabhaktheriya angaphila lapho ukugxila kwe-sulfuric acid kufinyelela ku-10-12%, futhi kungadala ukubola okukhulu ukusakaza i-iron. Esinye isizathu ukuthi amabhaktheriya ayanda ebusweni bensimbi ngaphansi kwezimo ze-aerobic ukwakha i-biofilm engajwayelekile. Imisebenzi yama-microorganisms idala ushintsho emvelweni ngaphakathi kwe-biofilm, njengokuhlushwa kwe-oxygen, inani le-PH, i-pH, njll., Ukwakha indawo ye-yin ne-yang ebusweni bensimbi, okuholela ekuphenduleni kweseli ye-galvanic.

Sicela ugcine umthombo nekheli lale ndatshana ukuze uphinde uprintwe:I-Anticorrosion Of Ductile Iron Pipe Zinc Ungqimba

UMinghe Inkampani yeDie Casting anikezelwe ekukhiqizeni nasekuhlinzekeni ikhwalithi nokusebenza okuphezulu Izingxenye Zokulingisa (izingxenye zensimbi zensimbi zokufa zisebenza ikakhulukazi zibandakanya I-Thin-Wall Die Casting,I-Hot Chamber Die Casting,Cold Chamber die Casting), Insizakalo Eyindilinga (Insiza Yokulingisa,ICnc Machining,Ukwenza Okubandayo, Surface Treatment) .Noma ikuphi ukusakazwa kwe-Aluminium die, i-magnesium noma i-Zamak / zinc die casting nezinye izidingo zokuphosa zamukelekile ukuxhumana nathi.

Ngaphansi kokulawulwa kwe-ISO9001 ne-TS 16949, Zonke izinqubo zenziwa ngamakhulu emishini esezingeni eliphakeme yokufa, imishini ye-5-axis, nezinye izikhungo, ezisukela kuma-blasters kuya kumishini yokuwasha ye-Ultra Sonic.Minghe akagcinanga ngemishini esezingeni eliphezulu kepha futhi unobuchwepheshe iqembu lonjiniyela abanolwazi, ama-opharetha nabahloli ukwenza ukwakheka kwekhasimende kugcwaliseke.

Umenzi wenkontileka yokufa kwabasikiwe. Amandla afaka izingxenye ezibandayo ze-aluminium die casting ezivela ku-0.15 lbs. kuye ku-6 lbs., Ukusetha ushintsho olusheshayo, nemishini. Izinsizakalo ezingezwe ngenani zifaka phakathi ukupholisha, ukudlidliza, ukuphazamisa, ukuqhumisa ngokudubula, ukupenda, ukuhlobisa, ukumboza, ukuhlangana nokusetshenziswa kwamathuluzi. Izinto zokusebenza ezisetshenzisiwe zifaka ama-alloys afana no-360, 380, 383, no-413.

I-Zinc die casting design usizo / izinsizakalo zobunjiniyela ezihambisanayo. Umenzi wangokwezifiso we-precision zinc die castings. Ukusakazwa okuncane, ukukhishwa kwengcindezi ephezulu, ukusikeka kwesikhunta esiningi, ukujikijelwa kwesikhunta okuvamile, ukufefa kwamayunithi kanye nokuzimela okuzimele kanye nokuvalwa okuvaliwe komgodi kungenziwa. Ama-Castings angenziwa ngobude nobubanzi obufinyelela ku-24 in. Ku +/- 0.0005 in. Ukubekezelelana.  

I-ISO 9001: Umkhiqizi oqinisekisiwe ka-2015 we-die cast magnesium, Amandla afaka i-high-pressure magnesium die casting up to 200 ton chamber hot & 3000 ton cold chamber, designing designing, polishing, molding, machining, powder & liquid paint, QA full with CMM amakhono , inhlangano, ukupakisha nokulethwa.

Kuqinisekiswe i-ITAF16949. Insiza Eyengeziwe Yokulingisa Faka ukukhipha utshalomali,ukuphonsa kwesihlabathi,Ukuphonswa kwamandla, Lost Foam Ekubunjweni,I-Centrifugal Casting,Ukuphoswa Kokuqothula,Permanent Isikhunta Ukulingisa, Amakhono afaka i-EDI, usizo lobunjiniyela, ukumodeliswa okuqinile nokucutshungulwa kwesibili.

Izimboni Zokulingisa Izingxenye Zamacala Ezifundo Zezimoto: Izimoto, Amabhayisikili, Izindiza, Izinsimbi Zomculo, I-Watercraft, Amadivayisi we-Optical, Izinzwa, Amamodeli, Amadivayisi we-elekthronikhi, Ukuvaleka, Amawashi, Imishini, Izinjini, Ifenisha, Ubucwebe, AmaJig, Telecom, Ukukhanyisa, Amadivayisi Wezokwelapha, amadivayisi wezithombe, Amarobhothi, okubaziwe, okokusebenza komsindo, okwezemidlalo, i-Tooling, Amathoyizi nokuningi. 

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By Umkhiqizi weMinghe Die Casting | Izigaba: Izindatshana Eziwusizo |Material Omaka: I-Aluminium Casting, Zinc Ukulingisa, Ukulingiswa kweMagnesium, I-Titanium Casting, Insimbi Engagqwali, Brass Ekubunjweni,Ukulingiswa kweBronze,Isakaza ividiyo,Umlando wenkampani,I-Aluminium Die Casting | Amazwana Off