Tsawg -} kub yuav tsum muaj thiab ntsuas txoj kev rau cov ciav hlau txheem
- Lub teb chaws twg 'neeg txawv teb chaws {{0} Txheem cov hlau ntsia hlau muaj cov ntshiab kom muaj rau qis- kub nruj?
International- Txheem Hlau Ntsia Hauv Txias, Canada, thiab cov tebchaws Canada muaj qhov tsis muaj qhov qis dua- kub. Lavxias Gost txheem txheej txheem hais tias qhov kev cuam tshuam nyuaj ntawm cov nqaj ntawm {}}℃yuav tsis tsawg dua 25J; Tus qauv CSADIAN CSA yuav tsum tau hais tias qhov cuam tshuam kov ntawm {{6}℃yuav loj dua los yog sib npaug rau 30J; Tus qauv SSAB SSAB SSAB SSAB
- Dab tsi yog qhov kev sib raug zoo ntawm qhov qis - kub sab nrauv ntawm cov neeg txawv teb chaws {1 qauv cov khoom siv hlau thiab cov khoom siv?
Cov ntsiab lus ntawm npib tsib xee thiab manganese nyob rau hauv txawv teb chaws {{txheem steel ntsia muaj qhov cuam tshuam tseem ceeb ntawm qis- kub nruj. Tsim nyog ntxiv ntawm Nickel (1% {{4 4}}}%) tuaj yeem txo qhov hloov tshiab ntawm cov hlau thiab txhim kho qis qis {{qhov kev cuam tshuam kub sai. Manganese tuaj yeem ua kom haum nplej, thiab thaum ua ke nrog micro {{}}} alloy, nws tuaj yeem txhim kho qis qis} kub sab thaum ua kom muaj zog. Cov kev phom sij xws li cov leej faj thiab phosphorus yuav tsum muaj nruj me ntsis tswj. Cov ntsiab lus ntawm cov tsiaj ntawv Sulfur tsawg yuav tsum tau tsim qis {{melting taw tes sulfides, ua rau muaj qis qis- kub brittleness. Txawv tebchaws {{14} Txheem cov kab hlau txuas ib feem ntau yuav tsum muaj cov lus faj sulfur tsawg dua los yog sib npaug rau 0.015% thiab sib npaug rau 0.025%.
- Cov Qauv Ntsuas Rau Tsawg - kub tougness ntawm txawv teb chaws {1 tus qauv hlau ntsia hlau?
Cov qauv kev ntsuas suav nrog ASTM E23 hauv Tebchaws Meskas, uas qhia meej txog kev ntsuas cuam tshuam, muaj feem xyuam rau kev ntsuas kev cuam tshuam nyuaj los ntawm- 60℃rau chav sov; EU en 10045 - 1 qauv, uas qhia meej txog txoj haujlwm thiab ntsuas cov kauj ruam tsawg kawg li - 196 degree; Japanese Jis Z2242 tus qauv muaj cov ncauj lus kom ntxaws rau kev ntsuas cov khoom siv thiab ua rau muaj kev txiav txim siab ntawm txawv teb chaws {} Txheem hlau ntsia hauv Asia.
- Yuav ua li cas ua cov kev cuam tshuam cov index ua ntawm cov neeg txawv teb chaws {0} Txheem transls hloov ntawm kev sim sib txawv?
Qhov kev cuam tshuam nyuaj ntawm txawv teb chaws {{0} Txheem hlau cov nqaj hlau txo qis nrog cov qis dua ntawm qhov kub. Noj Canadian CSA txheem ntsia hlau ua ib qho piv txwv, qhov cuam tshuam nruj, qhov kev cuam tshuam nyuaj yog 80,} degree, thiab yuav tsum tau tswj hwm saum 30J ntawm - 30 degree. Swedish ssab rail muaj kev cuam tshuam tawv ntau dua los yog sib npaug ntawm 030} {14} -} kev ua haujlwm kub. Rau txhua 10℃txo qis hauv qhov kub, qhov kev cuam tshuam kov ntau dua los ntawm 10%- 15}%, thiab ntau yam sib txawv nrog cov ntaub ntawv.
- Dab tsi txaus ntshai yuav txawv teb chaws {{0} Txheem cov hlau ntsia hlau nrog tsis txaus- kub tawv muaj nyob hauv kev siv?
Foreign - standard steel rails with insufficient low - temperature toughness are prone to brittle fracture when subjected to train impact in cold regions, especially at rail joints and welding parts. Thaum qhov kub poob qis hauv lub caij ntuj no, kev ntxhov siab sab hauv yog cov kev sib tw sai sai, thiab tsis txaus ua rau kev tsheb ciav hlau sai sai, ua rau kev tsheb ciav hlau nrawm. Tsis tas li ntawd, kev sib tw nrog tsis muaj qis qis - kev kub ceev tau txo qis zog, thiab cov nqi kho kev nyab xeeb thiab muaj peev xwm kev nyab xeeb kev nyab xeeb.