Isimo samanje kanye nesiqondiso sokuthuthukiswa kokuthwala insimbi

Ama-Bearings asetshenziswa kakhulu emishinini yezimayini, amathuluzi emishini yokunemba, okokusebenza kwensimbi, izinto ezisindayo nezimoto ezisezingeni eliphezulu nezinye izinkundla zemishini emikhulu, ukukhiqizwa kwamandla omoya, isitimela sesitimela esinesivinini esikhulu kanye ne-aerospace kanye nezinye izimboni ezisafufusa. ikakhulukazi ama-bearings aphansi kanye nama-bearings amancane naphakathi, abonisa i-surplus esezingeni eliphansi kanye nokuntuleka okuphezulu.Uma kuqhathaniswa namazwe angaphandle, kunegebe elikhulu kuma-bearings aphezulu kanye nama-bearings amakhulu.

Ama-bearings amasondo aseShayina anesivinini esiphezulu ahambisana nomzila wesitimela wonke adinga ukungeniswa kwamanye amazwe.Emabhereni okhiye asetshenziswa endaweni yendiza, ujantshi wesitimela esinesivinini esikhulu, izimoto ezisezingeni eliphezulu neminye imikhakha yezimboni, kunegebe elikhulu phakathi kwama-bearings aseShayina kanye ezithuthukisiwe mayelana nempilo yesevisi, ukwethembeka, inani le-Dn kanye namandla okuzala.Isibonelo, impilo yesevisi yamabheringi okuthutha izimoto zangaphandle okungenani amakhilomitha angu-500,000, kuyilapho impilo yesevisi yama-bearings afanayo asekhaya imayelana namakhilomitha ayi-100,000, futhi ukwethembeka kanye ukuzinza kumpofu.

1. Indiza

Njengengxenye ebalulekile eyisisekelo ye-aero-injini, isizukulwane sesibili se-aero-injini ene-thrust ratio engu-15-20 siyathuthukiswa phesheya, esilungele ukuhlanganiswa ku-fighter yesizukulwane sesihlanu cishe ngo-2020. Kule minyaka eyi-10 edlule, I-United States ithuthukise isizukulwane sesibili sensimbi enenjini ye-aero-injini, izinhlobo zayo zensimbi ezimele i-CSS-42L, insimbi enamandla amakhulu engagqwali ekwazi ukumelana no-500 ℃, kanye ne-X30 (Cronidur30), insimbi ene-nitrogen ephezulu ekwazi ukumelana nokugqwala. 350 ℃ ukumelana.I-China ithuthukisa isizukulwane sesibili se-aero-injini.

2. Izimoto

Ngama-hub bearings ezimoto, ama-hub bearings esizukulwane sokuqala nesesibili (ama-ball bearings) asetshenziswa kakhulu e-China, kuyilapho ama-hub bearings esizukulwane sesithathu asetshenziswe kabanzi eYurophu.Izinzuzo eziyinhloko zama-hub bearings esizukulwane sesithathu ukwethembeka, isikhala esifushane sokukhokha , ukufakwa kalula, akukho ukulungisa, ukwakheka okuhlangene nokunye.Okwamanje, amamodeli amaningi angenisiwe e-China asebenzisa ama-hub bearings anjalo angasindi futhi ahlanganisiwe.

3. Isitokwe sikaloliwe

Njengamanje, ama-bearings asetshenziswa ezitimeleni zaseChina ezithwala kanzima enziwe nge-electroslag remelting yasekhaya G20CrNi2MoA carburized steel.Futhi amazwe angaphandle ane-ultra high pureness of bearing steel (EP) steel smelting kanye ne-vacuum degassing inclusion homogenization technology (IQ) steel, impilo ende. ubuchwepheshe bensimbi (i-TF) insimbi, ikhwalithi enhle, kanye nobuchwepheshe bokwelapha ukushisa, indlela yokwelapha yokuqina kwendawo kanye nobuchwepheshe bokufaka uphawu obuthuthukisiwe bokugcoba obusetshenziswa ekukhiqizeni nasekukhiqizeni, ngaleyo ndlela kuthuthukise kakhulu impilo yesevisi yokuthwala nokuthembeka.Ikhwalithi yokuthwala i-electroslag yaseShayina insimbi ayigcini nje ngokuphansi, kodwa futhi izindleko ziyi-2000-3000 yuan/ton ephakeme kunaleyo ye-vacuum degassing steel.Ngokuzayo, i-China idinga ukuthuthukisa insimbi ene-vacuum degassing ene-ultra-high purity, ikhwalithi enhle, i-homogenization kanye nekhwalithi ezinzile ukuze kuthathelwe indawo ukusetshenziswa kwamanje kwensimbi ene-electroslag.

Ucwaningo lwesikhathi esizayo kanye nesiqondiso sokuthuthukiswa kwe-Bearing steel e-China

Ibonakala kakhulu ezicini ezine:

1. Ukuhlanzeka kwezomnotho

Ngaphansi kwesisekelo sokucabangela umnotho, ukuhlanzeka kwensimbi kuthuthukiswa ngokwengeziwe, okuqukethwe kwe-oksijini ne-titanium ensimbi kuyancishiswa, futhi ingxenye enkulu ye-oxygen ne-titanium ekukhiqizeni insimbi ingaphansi kuka-6 × 10-6 no-15 × 10- 6, ngokulandelana.Okuqukethwe kanye nobukhulu bokufakwa ensimbi kuyancishiswa, futhi ukufana kokusabalalisa kuyathuthukiswa.

2. Ukulungiswa kwenhlangano kanye ne-homogenization

Ngokusetshenziswa komklamo we-alloying kanye nenqubo yokupholisa elawulwayo kanye nenqubo yokupholisa elawulwayo, ukufana kwe-inclusions nama-carbides kuyathuthukiswa, ama-carbides ahlanjululwe futhi aboshwe ayancishiswa futhi aqedwe, ubukhulu obujwayelekile kanye nobukhulu bezinhlayiyana buyancipha, kanye nobukhulu obujwayelekile be-carbides. ingaphansi kuka-1μ m. Usayizi wokusanhlamvu wensimbi yokuthwala uqhubeka ucwengwa ngokuthuthukisa usayizi wokusanhlamvu wesakhiwo se-matrix.

3. Yehlisa ukukhubazeka kwezicubu ezinamandla aphansi

Yehlisa futhi i-porosity emaphakathi, i-central shrinkage cavity kanye nokuhlukaniswa kwengxenye emaphakathi ku-bearing steel, thuthukisa ukufana kwesakhiwo samandla aphansi.

4. Ukuqina okuphezulu kokuthwala insimbi

Ukuqina kwensimbi ethwalayo kwathuthukiswa ngokufakwa okusha kwe-alloying, ukwenziwa ngcono kwenqubo yokugingqika okushisayo kanye nocwaningo lwenqubo yokwelapha ukushisa.(China Steel Research & Development Strategy Institute)

Umshwana wokuzihlangula: izinto eziyingcaca ezivela kunethiwekhi, ukuchayeka kwe-copyright kumbhali wokuqala konke, njengokuphulwa komthetho, sicela uthinte ukuze ususe.