"75 kg Rail" txhais li cas?
Lub npe "7 5kg rwj" qhia txog qhov loj ntawm txog75kg ib mntawm ib qho kev tsheb ciav hlau - tsis yog qhov sib xyaw ua ke ntawm ob txoj kev tsheb ciav hlau hauv ib txoj kev. Qhov no ib -meter qhov loj yog qhov kev lag luam shorthand rau seem kev tsheb nqaj hlau, thiab nws ncaj qha ntsig txog kev taug qab cov kabmob muaj peev xwm, kev ruaj khov thiab kev pabcuam lub neej. Suav 75 kg/m hnyav rail seem yog txhais los ntawm TB/T 2344 (cov txheej txheem rau kev tsheb nqaj hlau) nrog qhov ntev ntawm seem kos duab, thiab cov tsheb ciav hlau raug txiav txim rau GB / T 2585 (kub-kub{7}} dov rails rau kev siv tsheb ciav hlau).
Theoretical Nyhav thiab Dimensions
| Parameters | |||
| hom | qhov hnyav (kg / m) | khoom | ntev (m) |
| 7 5 Kg | 74.64 | U71Mn/U75VX | 12m-25m |
| rail qhov siab (mm) | hauv qab dav (mm) | taub hau dav (mm) | web thickness (mm) |
| 192 | 150 | 75 | 20 |
GB 75KG Rail Steel Qib
Suav 75 kg / m rails feem ntau muab rau hauv pearlitic rail steels xws li U75V (nrog vanadium microalloying rau lub zog thiab hnav tsis kam) thiab U78CrV- hom qib rau kev pabcuam hnyav, ib GB / T 2585 / TB / T 2344.
| Qib Steel | C(%) | Si | Mn | Cr | V | P | S | Tensile zog (Rm / MPa) |
| ua 71mn | 0.65~0.76 | 0.15~0.58 | 0.70~1.40 | – | – | Tsawg dua lossis sib npaug li 0.035 | Tsawg dua lossis sib npaug li 0.030 | Ntau dua lossis sib npaug rau 880 |
| U75V | 0.71~0.80 | 0.50~0.80 | 0.75~1.05 | – | 0.04~0.12 | Tsawg dua lossis sib npaug li 0.035 | Tsawg dua lossis sib npaug li 0.030 | Ntau dua lossis sib npaug li 980 |
| ua 78crv | 0.72~0.82 | 0.50~0.80 | 0.70~1.05 | 0.30~0.50 | 0.04~0.12 | Tsawg dua lossis sib npaug li 0.035 | Tsawg dua lossis sib npaug li 0.030 | Ntau dua lossis sib npaug rau 1080 |
| U77MnCr | 0.72~0.82 | 0.10~0.50 | 0.80~1.10 | 0.25~0.40 | – | Tsawg dua lossis sib npaug li 0.035 | Tsawg dua lossis sib npaug li 0.025 | Ntau dua lossis sib npaug li 980 |
| ua 76kr | 0.71~0.81 | 0.50~0.80 | 0.80~1.10 | 0.25~0.35 | 0.04~0.08 | Tsawg dua lossis sib npaug li 0.035 | Tsawg dua lossis sib npaug li 0.025 | Ntau dua lossis sib npaug rau 1080 |
Vim li cas Qhov hnyav thiab qhov loj ntawm cov ntaub ntawv tseem ceeb?
Qhov tseeb ntawm kev tsheb ciav hlau qhov hnyav thiab cov ntaub ntawv ntu txhawb kev tsim, kev tsim kho thiab kev npaj kho vaj tse: kev suav cov peev txheej, kev siv nyiaj txiag thiab kev yuav khoom, thiab kev hloov sijhawm. Rau cov dej num loj, qhov sib txawv ntawm qhov nominal thiab theoretical loj qhov teeb meem rau tonnage accounting - xaj thiab invoice los ntawm qhov tseeb theoretical huab hwm coj ib tus qauv.
Cov lus nug nquag
Q1. Puas yog qhov theoretical hnyav ntawm 75 kg rail raws nraim 75 kg / m?
Lub npe yog sib npaug; qhov theoretical huab hwm coj ib seem yog kwv yees li 74.414 kg / m rau Suav seem.
Q2. Tus qauv ntev ntawm 75 kg rail yog dab tsi?
Feem ntau 25 m ib TB/T 2344; lwm qhov ntev los ntawm kev pom zoo.
Q3. Cov qauv twg npog 75 kg rail?
GB / T 2585 thiab TB / T 2344 hauv Suav teb; lees paub tus qauv hauv paus ntawm qhov project.
