Inkomba yenqubo yokukhiqiza ye-Iscient aqothulwe i-iron yensimbi e-United States

Kunokwehluka okuthile ezeza ngezakhiwo zemishini phakathi kwe-Iscithermal Quither actile Iron e-United States kanye ne-Istothermal Ductile Iron eChina. Isibonelo, i-ISWothermal Ductile Iron eChina iqala ngezindawo ezingama-900 megapascass, ngenkathi e-United States iqala ngama-megapascas angama-750. Ngaphezu kwalokho, kukhona nezinto ezihlukile ngokwemininingwane yenqubo yokukhiqiza, ukuncibilika, kanye nokwelashwa okushisa. Ake sibheke lezi zindawo ezihlukile kokufuywayo kwethu futhi sibone ukuthi zikhona yini izindawo esingazifunda. Amabanga ajwayelekile we-isothermal aqothulwe i-iron e-United States ikakhulukazi asekelwe ku-ASTM A897, futhi okuvamile kungokulandelayo:

I-ASTM A897 Ibanga 110/70/11 Izakhiwo Zomshini: Amandla we-Tensile Ububanzi besicelo: Ilungele izingxenye ezijwayelekile zemishini ezidinga ukulinganisela phakathi kwamandla nokuqina, amagiya amancane, ama-awple a896mpla, uthele amandla ≥ 9%. Ububanzi besicelo: Ingasetshenziselwa ukwenza izingxenye ezingamelana nemithwalo elinganiselayo kanye nemithelela ethile, njengokuqondisa ama-knuckles, izingalo zokumiswa, njll. Kwezimoto.

I-ASTM A897 Ibanga 150/110/07 Izakhiwo zemishini: Amandla ashubile Ububanzi besicelo: Isetshenziselwa ukukhiqiza izingxenye ezidinga amandla aphezulu nokugqoka okuphezulu, njengezando ze-crusher, ama-liners, njll emishini yokumbiwa phansi. I-ASTM A897 Ibanga 175/125/04 Izakhiwo zemishini: Amandla ashubile Scope of Isicelo: Ilungele ukukhiqiza amandla aphezulu kanye nezingxenye ezinzima kakhulu, ezifana nama-roller kanye isikhunta sokugaya okukhulu okugoqwayo. I-ASTM A897 Ibanga 200/155/02 Izakhiwo zemishini: Amandla weTensile ≥ 1379MPA, Fered Gert ≥ 1069MPA, Elengation ≥. Isilinganiso sesicelo: Ingasetshenziselwa ukukhiqiza izingxenye ezikhethekile ngezidingo zamandla aphezulu kakhulu nezidingo eziphansi zobunzima, njengezakhi ezithile ezibalulekile emkhakheni we-aerospace.

I-ASTM A897 Ibanga 230/185/01 Izakhiwo zemishini: Amandla we-Tensile ≥ 1586MPA, Forn Gerce ≥ 1276MPA, Elengation ≥ 1%. Ububanzi besicelo: Ngokujwayelekile esetshenziselwa ukukhiqiza ama-Ultra Amandla Angamelana Namandla Okungamelana Namandla, njengezinto ezithile ezibalulekile emishini yezempi. Ngaphezu kwalokho, kunamabanga ajwayelekile afana nebanga 1-6. Yini umehluko ekubusweni kwamakhemikhali we-isothermal rouctile iron phakathi kweChina ne-United States? E-American ASTY ASTM A897 ejwayelekile, ukwakheka okujwayelekile kwamakhemikhali kwe-isothermal aqothulwe i-iron yensimbi enjengeBanga lesi-2 kanye ne-0,5% Carbon, 0.5% Ukwakheka kwamakhemikhali kweChinese QT1050-6 namanye amabanga we-Iscialis aqothulwe yi-auctile iron ngokuvamile i-3.5% -3.9% i-silicon, <0.0% -0.6%, <0.03% -0.05% 0.15% -0.25% molybdenum, kanye no-0.02% -0.05% umhlaba ongavamile. Ukuqhathanisa kukhombisa ukuthi okuqukethwe yikhabhoni yento esemqoka kulungiswa cishe ngama-3.7% amazinga athile aseMelika, kuyilapho okuqukethwe yi-carbon yamabanga ahlukene eChina kuyahluka phakathi kwama-3.5% kanye nezidingo zokusebenza. Okuqukethwe yi-Silicon: Ngokuvamile cishe ama-2,5% e-United States kanye ne-2.2% -2.6% eChina, okuvumelana nezimo ngokwengeziwe. Okuqukethwe kweMaNansese kwezakhi ze-alloy: Ngokuvamile, kungu-0,28% e-United States, ngenkathi eseChina, okuqukethwe kuphakathi kuka-0.2% no-0.4%, ne-United States zizinzile kakhulu. Okuqukethwe yi-Copper: I-United States ibeka okuqukethwe yi-≤ 0.80%, ngenkathi iChina ivame ukusukela phakathi kuka-0.3% -0.5% noma ngo-0.4% -0.6%, ngohlu olucacile lokuqukethwe eChina. Okuqukethwe molybdenum: 0.00% -0.25% e-United States kanye ne-0.15 -0.25% eChina. I-China inokulawulwa okuqondile okwengeziwe ngaphezulu kokuqukethwe kwe-molybdenum. Okuqukethwe kwe-nickel: I-United States ivumela okuqukethwe kwe-nickel ukuthi kube ≤ 2.0%, kanti iChina ayicacisi ngokucacisa okuqukethwe kwama-nickel ngamazinga ajwayelekile wokuqanjwa kwamakhemikhali we-istothermal aqothulwe i-irotherali yensimbi ecijile. Okuqukethwe kwe-magnesium kwento ye-spheroaling element: I-China ngokuvamile ilawula okuqukethwe kwe-magnesium ku-0.03% -0.05%, ngenkathi indinganiso yase-US icacisa kahle uhla lwale reji ye-schertemiting element. Okuqukethwe koMhlaba Okungavamile: I-China ichaze ngokusobala ukuthi okuqukethwe komhlaba okungavamile kuphakathi kuka-0.02% no-0.05%, ngenkathi i-United States ingakashongo.

Yini umehluko ezinqumweni zokwelashwa kokushisa kwe-isothermal rouctile iron phakathi kweChina ne-United States?

Ukushisa kwesigaba se-Auntonitization: eChina, i-Couctile Iron ivame ukufuthelwa ku-850-950 ℃. E-United States, lapho ukhiqiza i-iron ye-ructile enjenge-120-90-2, izinga lokushisa eligulayo lingu-860-900 ℃, izinga lokushisa eliphelele elijwayelekile, futhi okuphelele kwe-austonitization okujwayelekile, okuphelele kokungaphansi kwendlela yokushisa kungama-820-860 ℃.

Isikhathi sokufaka: I-China imvamisa igcina ukufakwa kwamahora angu-1-2, kanti i-United States inquma ukufakwa cishe kwehora elingu-25 njalo ngokukhululwa kodonga lwase-25mm ngokususelwa odongeni.

Izinga lokupholisa ngesikhathi sokuqeda isigaba Lapho ucima e-United States, ama-castings asolwa ngokushesha ngokucima imidiya efana namafutha noma usawoti oncibilikisiwe ukuthola isakhiwo seMartensitic. Ukucima okuphakathi: Ukugeza kukaSawork kuvame ukusetshenziswa njengendlela ephakathi nendawo eChina, njengokusebenzisa ifomula ye-nitrate ye-55% ye-potassium nitrite ne-45% sodium nitrite. I-United States isebenzisa ukuqeda imidiya efana namafutha noma usawoti oncibilikisiwe.

I-ISOTRESTMAL Treatch Treatment State Littere lokushisa: E-China, i-IscingHLAAL Qunding ngokuvamile yenziwa phakathi kuka-250-380 ℃. E-United States, lapho ukhiqiza i-iron ye-ructile efana ne-120-90-2 yokuguga, izinga lokushisa elinolaka livame phakathi kuka-250-350 ℃. Ngokugodla okudinga ukusebenza okuphezulu okuphelele, izinga lokushisa elinonya elingu-500-600 ② lingasetshenziswa futhi.

Isikhathi se-ISothermal: I-China igcina lokhu kushisa amahora angama-1.5-3,5, ngenkathi isikhathi sokugunda nokufakwa e-United States ngokuvamile amahora angama-1-3.

Isigaba sokuphola eChina: Imvamisa kuphoqelwe umoya wokushisa kwegumbi. Indlela epholile ngemuva kokuguga e-United States imvamisa umoya wokupholisa noma ukupholisa ukupholisa.