Insimbi Engagqwali

Insimbi engagqwali isho okuqukethwe okungokwakhe i-Ferrite ne-Auden, i-accounting ngayinye nge-50%. Ekusetshenzisweni kwangempela, kufanelekile ngokwengeziwe kwenye yezigaba ukuba zibe phakathi kuka-40-60%.

Ngokwezici zesakhiwo sezigaba ezimbili, ngokulawula kahle ukwakheka kwamakhemikhali kanye nenqubo yokushisa okushisa, ukushibilika kwensimbi yensimbi ephakeme kuhlanganiswe namandla aphezulu angenacala, amandla angenacala uhlobo lwensimbi ehlanganisa ukumelana kahle nokuqina okuhlanganisiwe kanye nokusebenza okulula nokwenziwa. Izakhiwo zazo ezibonakalayo ziphakathi kwensimbi yensimbi engenacala ne-Ferrititic yensimbi engenacala, kepha eduze kwensimbi engenasici engenasici kanye ne-carbon. Ukumelana ne-Chloride Pittipt kanye ne-Crevice Corrision yensimbi engenacala kuhlobene nokuqukethwe kwe-chromium, molybdenum ne-nitrogen. Ukumelana kwayo ekugcekeni kwePitting and Crevice kungafana nalokhu ngensimbi engama-316 yensimbi engagqwali, noma ngaphezulu kunensimbi engenacala ngamanzi olwandle, njenge-6% mo auntenitic insimbi engenacala. Zonke izinsimbi ezingenacala ezingenacala zimelana kakhulu nokugqwayiza kwe-chloride ukuxabana kokuqhekeka kune-300 chungechunge ama-auntenitic ama-auntenitic ama-auntenitic ama-steres, futhi amandla awo aphakeme kakhulu kune-auntenitic steres, ngenkathi ekhombisa ipulasitiki enhle nokuqina.

Izinhlobo zemikhiqizo ehlukahlukene yensimbi engenacala

Insimbi engenacala ye-Duplex ngokuvamile ingahlukaniswa izigaba ezine:

Eyokuqala: Uhlobo lwe-Alloy oluphansi, ibanga elimele i-UNS32304, i-Steel ayinayo i-molybdenum, pren: 24-25, ingathatha isikhundla sokuphikiswa kwengcindezelo.

Okubili: Uhlobo lwe-alloy oluphakathi, isikhundla sabamele u-UNSS31803, PRN: 32-33, ukumelana nokugqwala kuphakathi kwe-Aisi316L kanye ne-6% mo auntenitic insimbi engenacala.

Okwesithathu: Uhlobo lwe-alloy oluphakeme, ngokuvamile oluqukethe ama-25 %r we-25

Okwesine: I-Super Dumplex Steel Uhlobo, oluqukethe i-molybdenum ephezulu, amamaki ajwayelekile, amanye futhi aqukethe ama-tungste ne-pren, anokumelana kahle nensimbi ephelele, eqhathaniswa nensimbi ephelele yensimbi engenacala. (Qaphela: pren: Ukumelana nokuphamba okulinganayo)

Ukwakheka kwamakhemikhali izinto eziphambili ze-Druplex zensimbi kukhona u-CR, NI, MO no-N. Amanye amamaki ensimbi nawo anezakhi ezinjenge-MN, CU, no-W. Cr, NI, futhi uMo angathuthukisa ukumelana nokugqwala. Ukumelana kwayo kokugqwala okukhohlisayo nokukhohlisa kwe-crevice kuhle kakhulu ezindaweni eziqukethe i-chloride.

Izinzuzo zensimbi engenacala

1. Uma kuqhathaniswa nensimbi ye-auntenitic engagqwali

1) Amandla okuvuthwa angaphezu kokuphindwe kabili kwensimbi evamile ye-auntenitic stainless yensimbi, futhi ineplastiki eyanele nokuqina okudingekayo ukwakha. Ubukhulu bamathangi okugcina noma imithambo yengcindezi eyenziwe ngensimbi engagqwali ingaphansi kwama-30-50% ngaphansi kwensimbi esetshenziswa kakhulu ye-auntenitic esetshenziswayo, evumelana nokunciphisa izindleko.

2) Inokumelana okuhle kakhulu ekuqhekekeni kwengcindezi kokuqhekeka, ikakhulukazi ezindaweni eziqukethe i-chloride ion. Ngisho nensimbi engenacala nge-Alloy okuqukethwe okuphansi kakhulu kunokumelana okuphezulu ekuqhekekeni kwengcindezelo kuqhekeke kunensimbi e-auntenitic engagqwali. Ukugqwala kwengcindezi kuyinkinga evelele ukuthi insimbi evamile ye-auntenitic yensimbi evamile kunzima ukuyixazulula. 3) Ukumelana nokugqwala kwensimbi evame kakhulu engama-2205 duplex dulex esetshenziswe emithonjeni eminingi kungcono kunensimbi ejwayelekile engama-316L auntenitic insimbi, kanye nensimbi embi kakhulu ye-suuntex auntenion inokuphikiswa okukhulu kakhulu. Kweminye imithombo yezindaba, efana ne-acetic acid ne-formic acid, kungafaka esikhundleni sensimbi ephezulu-alloy auntenitic insimbi engenasici engenasici kanye nokuqina. 4) Inokumelana okuhle kokugqwala kwasendaweni. Uma kuqhathaniswa nensimbi engenacala ngokuqukethwe okufanayo kwe-alloy, ukumelana kwayo ukuqina kokuqina nokumelana nokugqwala kokugqwala kungcono kunensimbi e-auntenitic engagqwali. I-5) I-coefficion ebanzi eqondile iphansi kunaleyo yensimbi engenacala, eduze kwensimbi ye-carbon, efanele ukuxhumana ngensimbi yekhabhoni, futhi inokubaluleka okubalulekile kobunjiniyela, njengokukhiqizwa kwamapuleti ahlanganisiwe noma ama-linings.

2. Uma kuqhathaniswa nensimbi engenasici, izinzuzo zensimbi engenacala zinjengokulandelayo:

1) Izakhiwo eziphelele zemishini ziphakeme kunalezo zensimbi engenasici, ikakhulukazi ubulukhuni bepulasitiki. Akunangqondo ngobuhlakani njengensimbi engenacala.

2) Ngaphandle kokumelana nokugqwayiza kwengcindezelo, okunye ukumelana nokugqwala kwendawo kungcono kunensimbi engenacala.

3) Ukusebenza okubandayo kokusebenza nokusebenza okubandayo kwakha kungcono kakhulu kunensimbi engenacala.

4) Ukusebenza kwe-Welding kungcono kakhulu kunensimbi engenasici. Ngokuvamile, akukho okudingekayo ngaphambi kokufakwa ngaphambi kokushiswa futhi akukho ukwelashwa okushisa okudingekayo ngemuva kokushiswa.

I-5) Uhla lwesicelo lubanzi ukwedlula lelo nsimbi engenacala.

Isicelo

Ngenxa yamandla aphezulu we-duppex steel, kungagcina ukonga izinto zokwakha, njengokunciphisa ubukhulu bepayipi. Thatha i-SAF2205 ne-SAF2507W njengezibonelo. I-SAF2205 ilungele ukusetshenziswa ezindaweni eziqukethe ama-chlorine. Lokhu okuqukethwe kufanelekile ukucwilisa uwoyela noma eminye imisebenzi yenqubo exutshwe nama-chlorides. I-SAF2205 ilungele ikakhulukazi abashintshi bokushisa abasebenzisa izisombululo ezinamanzi ezinama-chlorine noma amanzi anosawoti kancane njengemidiya epholile. Lokhu okuqukethwe nakho kulungele izixazululo ze-sulfuric acid ezihlanjululwe kanye nama-organic acid ahlanzekile kanye nezingxube zabo. Isibonelo: Amapayipi kawoyela embonini kawoyela kanye negesi: ukuwohloka kwe-crude kawoyela ekuhlanjululweni, okuhlanjuluweni kwegesi, kulakwa kwamanzi emishini yemfulenti; Izinhlelo zokupholisa zisebenzisa amanzi anosawoti noma izixazululo eziqukethe ama-chlorine.