Halin da ake ciki na yanzu da jagorancin ci gaba na karfe mai ɗaukar nauyi

Ana amfani da bearings sosai a cikin injin ma'adinai, kayan aikin injin madaidaici, kayan ƙarfe, kayan aiki masu nauyi da manyan motoci da sauran manyan filayen kayan aiki, samar da wutar lantarki, jirgin ƙasa mai saurin dogo da jirgin sama da sauran masana'antu masu tasowa.Bearings da aka samar a kasar Sin suna da yawa. Mafi yawan karancin albashi da ƙanana da matsakaita, nuna ƙarancin ragi da kuma high-ƙarshen ba tare da ƙasashen waje tare da manyan abubuwa da manyan begings da manyan beings da manyan beings.

Jirgin fasinja mai sauri na kasar Sin na musamman da ya dace da na'urorin hannu duk suna bukatar a shigo da su daga kasashen waje.A cikin muhimman igiyoyin da ake amfani da su a sararin samaniya, layin dogo, manyan motoci masu tsayi da sauran filayen masana'antu, akwai babban gibi tsakanin igiyoyin kasar Sin, wadanda suka ci gaba a cikin rayuwar sabis, aminci, ƙimar Dn da ƙarfin ɗaukar nauyi.Misali, rayuwar sabis na isar da isar da motocin waje aƙalla kilomita 500,000, yayin da rayuwar sabis na bearings na cikin gida kusan kilomita 100,000, da amincin kwanciyar hankali ba ta da kyau.

1. Jirgin sama

A matsayin maɓalli na asali na injin injin, injina na ƙarni na biyu mai ɗaukar nauyi na 15-20 ana haɓaka shi a ƙasashen waje, wanda ke shirye don haɗa shi cikin mayaki na ƙarni na biyar a kusa da 2020. A cikin shekaru 10 da suka gabata, Amurka ta ɓullo da na biyu-ƙarni hali na karfe don Aero-engine, wanda wakilin karfe iri ne CSS-42L, wani babban ƙarfi lalata resistant hali karfe da 500 ℃ juriya, da kuma X30 (Cronidur30), wani babban nitrogen lalata resistant karfe tare da 350 ℃ juriya.Kasar Sin tana haɓaka aikin injiniyan jiragen sama na ƙarni na biyu.

2. Motoci

Don ƙwanƙolin cibiyoyi na motoci, ana amfani da na'ura na farko da na biyu (ɗakin wasan ƙwallon ƙafa) a kasar Sin, yayin da aka yi amfani da na'ura mai mahimmanci na ƙarni na uku a Turai. , sauƙi shigarwa, babu daidaitawa, m tsarin da sauransu.A halin yanzu, mafi yawan shigo da kayayyaki a kasar Sin amfani da irin wannan nauyi da hadedde tsarin bearings.

3. Railway rolling stock

A halin yanzu, bearings amfani da kasar Sin ta Railway nauyi-jawo jiragen kasa da aka yi daga cikin gida electroslag remelting G20CrNi2MoA carburized steel.And kasashen waje yana da matsananci high tsarki na hali karfe (EP) karfe smelting da injin degassing hada homogenization fasaha (IQ) karfe, tsawon rai. karfe fasahar (TF) karfe, lafiya inganci, da kuma zafi magani fasahar, surface taurin magani dabara da ci-gaba sealing lubrication fasahar shafi hali samar da masana'antu, don haka ƙwarai inganta sabis rayuwa na hali da kuma aminci.The ingancin kasar Sin electroslag hali karfe ne ba kawai low, amma kuma kudin ne 2000-3000 yuan / ton sama da na injin degassing karfe.A nan gaba, kasar Sin na bukatar bunkasa injin degassing hali karfe da matsananci-high tsarki, lafiya quality, homogenization da barga ingancin maye gurbin na yanzu amfani da electroslag hali karfe.

Future bincike da ci gaban shugabanci na Bearing karfe a kasar Sin

An fi bayyana ta ta fuskoki huɗu:

1. Tsaftar tattalin arziki

A karkashin yanayin la'akari da tattalin arziki, an kara inganta tsabtar karfe, an rage yawan iskar oxygen da titanium a cikin karfe, kuma yawan adadin oxygen da titanium a cikin nauyin karfe bai wuce 6 × 10-6 da 15 × 10- 6, bi da bi.An rage abun ciki da girman abubuwan da aka haɗa a cikin ƙarfe, kuma ana inganta daidaiton rarraba.

2. Kungiyar tacewa da homogenization

Ta hanyar aikace-aikace na alloying zane da sarrafa mirgina da sarrafa sanyaya tsari, da uniformity na inclusions da carbides an kara inganta, da reticulated da banded carbides an rage da kuma shafe, da matsakaita size da matsakaicin barbashi size an rage, da kuma talakawan size of carbides. kasa da 1μ m. Girman hatsi na ƙarfe mai ɗaukar nauyi yana ƙara ingantawa ta hanyar inganta girman ƙwayar ƙwayar matrix.

3. Rage ƙananan lahani na nama

Bugu da ari rage tsakiyar porosity, tsakiya shrinkage cavity da tsakiyar bangaren segregation a dauke da karfe, inganta uniformity na low-power tsarin.

4. Babban taurin ƙarfe mai ɗaukar nauyi

An inganta taurin ƙarfe mai ɗaukar nauyi ta hanyar sabon alloying, ingantaccen tsarin jujjuya zafi da bincike kan aiwatar da yanayin zafi.

Disclaimer: kayan hoto daga hanyar sadarwa, halayen haƙƙin mallaka ga ainihin marubucin duk, kamar ƙeta, tuntuɓi don sharewa.