I-Hastelloy C276 bar isebenza kuhle kangangani ngaphasi kweemeko ezimbi?

I-Hastelloy C276 idunyiswa "njenge-alloy ejamelana nokugqwala," etjengisa ukusebenza okupheze kungabhujiswa eendaweni ezimbi khulu zebubulo. Njenge-nickel-molybdenum-chromium-tungsten forged alloy, indlela yayo ye-bar isetjenziswa khulu emakhemikhali, amafutha negesi, ekukhipheni i-sulfurization ebhodulukweni, kanye namabubulo wamandla wenyutliya.

Okulandelako kukuhlaziywa okujulileko kwezobuchwepheshe kokusebenza kwe Ibha ye-Hastelloy C276s ngaphasi kwemibandela ebudisi:

1. Ukujamelana nokugqwala eendaweni ezinamakhemikhali amakhulu

Inzuzo ekulu ye-Hastelloy C276 ilele ekuzinzeni kwayo okuphezulu khulu kizo zombili iindaba ezikhiqiza i-oksijini nezokwehlisa.

• Ukujamelana nemidiya ene-asidi: Itjengisa ukujamelana okuhle khulu kuma-esidi aqinileko (njenge-hydrochloric acid, sulfuric acid, kanye ne-phosphoric acid). Khulukhulu ekubiliseni kwe-hydrochloric acid, lapho i-stainless steel ejayelekileko ibhalelwa msinyana, i-C276 igcina izinga eliphasi khulu lokugqwala.
• Ukujamelana ne-Clorine emanzi kanye ne-Oxidizing Salts: I-C276 ngenye yezinto ezimbalwa ezingajamelana nokugqwala okuvela kugesi ye-chlorine emanzi, ama-hypochlorites, kanye neensombululo ze-chlorine dioxide. Ukudlula lapho, itjengisa ukungatjhuguluki kwamakhemikhali okuhle khulu ekuhlanganiseni okuphezulu kwetswayi elikhipha i-oksijini (njenge-ferric chloride ne-copper chloride).
• Ukujamelana nokugqwala kwemigodi nemifantu: Ukuqukethwe okuphezulu kwe-chromium (Cr) ne-molybdenum (Mo), okuhlanganiswe nokungezelelwa kwe-tungsten (W), kwenza bona kube nokujamelana okunamandla khulu nokugqwala kwendawo eendaweni ezimbi khulu ezinama-ayoni we-chloride (njengamanzi welwandle namanzi wemayini ane-esidi enamandla).

2. Iimfanelo ezihle khulu zemitjhini yokutjhisa okuphezulu

Isitoko sebha sivamise ukusetjenziswa njengezinto zokubophelela, amashafti, nofana iinsekelo zesakhiwo, ezitlhoga ukusebenza eendaweni ezinezinga eliphezulu lokutjhisa kanye nezinga lokugandeleleka okukhulu.

• Ukuzinza kokuTjhisa: I-C276 igcina ukujamelana kwayo kwe-oksijini ukuya ku-1038°C (1900°F). Nanyana izinga lokutjhisa eliphakanyisiweko lokuthwala umthwalo wesikhathi eside lingaphasi kwaleli nani, ubuqotho besakhiwo sayo budlula khulu i-alloys ejwayelekileko esekelwe ku-nickel ngesikhathi sezenzakalo eziphezulu eziveleleko namkha ukujikeleza okukhulu kokutjhisa.
• Ukujamelana nokuqhekeka: Ngaphasi kweendawo ezinezinga lokutjhisa eliphezulu, i-C276 ijamelana kuhle nokuguquguquka okubangelwa kugandeleleka okuhlalako, okwenza bona ibe yikhetho elihle khulu lezinto eziqakathekileko ze-aerospace kanye ne-nuclear reactors.

3. Ukumelana okunamandla khulu nokuqhekeka kokugqwala (SCC)

Embonini yamafutha negesi, "iindawo ezine-esidi" (eziqukethe i-H2S, ama-chloride, kanye ne-carbon dioxide) ziyiphupho elibi khulu eentweni.

• Ukujamelana nokuqhekeka kwe-Sulfide: Ngebanga lokuqukethwe kwayo okuphezulu khulu kwe-nickel, i-C276 ayivikelekile ekuqhekekeni kokugqwala okubangelwa yi-chloride. Eendaweni zegesi ene-esidi ngaphakathi kwemithombo ye-oli negesi, iinqubu zevalvu nama-hook enziwe ngamabha we-C276 zivimbela kuhle ukuphuka okungakalindeleki okubangelwa kutjhabalala kwe-hydrogen nofana ukugqwala kwe-sulfide stress.

4. Ukujamelana nokugqwala ebujameni obuhlanganisiweko

Ama-alloy amanengi ahlangabezana nokutjhisa kwe-carbide endaweni ethintwe mtjhiso (i-HAZ) ngemva kokuwelda, okurholela ekugqwaleni kwama-intergranular.

• Ikhabhoni ephasi khulu nesilikhoni: Amabha we-C276 aklanyelwe nge-carbon elawulwa khulu (≤0.01%) kanye ne-silicon (≤0.08%) okumumethweko. Idizayini "enganakhabhoni" igandelela khulu ukwakheka kwemikhawulo yeenthoro ngesikhathi sokuwelda, okwenza bona imitjhini isetjenziswe ngqo eenkambisweni zamakhemikhali ezirhabako eziqinileko ebujameni bokuwelda ngaphandle kwesidingo sokutjhisa ngemva kokuwelda okuyinkimbinkimbi.

5. Ukusebenza kwemitjhini namandla womtjhini

Nanyana i-C276 ihlukaniswe njengento "ebudisi ukuyenza ngomtjhini," imigoqo yayo itjengisa ukuthamba okuhle khulu namandla womtjhini

Tjheja:

I-C276 itjengisa ukuthambekela okunamandla khulu kokuqinisa umsebenzi. Lokha nakusikwa nofana kubhora iinsimbi, imitjhini ebudisi, ibelo eliphasi lokusika, kanye namazinga aphezulu wokuphakela kuyatlhogeka, begodu ithulusi kufanele ligcinwe lisebujameni bokusika ngaso soke isikhathi ukukhandela bona isendlalelo sokuqina sangaphezulu singaqini.

Isirhunyezo:

Iinsimbi ze-Hastelloy C276 akusizo kwaphela "isisombululo sokugcina" semiraro emikhulu yokugqwala, kodwana ziqinisekisa ukusebenza okuphephileko kwesikhathi eside kwemitjhini ngaphasi kweemeko ezimbi khulu. Nanyana iindleko zezinto zazo zokuthoma ziphezulu, ipilo yazo ede khulu yokusebenza kanye neemfuneko eziphasi khulu zokutlhogonyelwa zenza bona zibe ngcono khulu emjikelezweni wazo woke wokuphila.