Medium ma maualalo u'amea u'amea o se vaega tele o u'amea u'amea fa'atasi elemene (tele vaila'au elemene e pei o le silicon, manganese, chromium, molybdenum, nickel, kopa ma vanadium) i lalo ifo o le 8%. Medium ma maualalo tu'u u'amea u'amea castings lelei hardenability, ma lelei atoatoa meatotino masini e mafai ona maua pe a uma togafitiga vevela talafeagai.
Fa'amatalaga Togafitiga o le Vevela o Fa'amea u'amea Maualalo ma Medium
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| Vasega | Vaega uamea | Fa'amatalaga o Togafitiga vevela | |||
| Auala Togafitiga | vevela / ℃ | Metotia malulu | Malosi / HBW | ||
| ZG16Mn | Uamea Manganese | Fa'asalaina | 900 | Malili i le ea | / |
| Fa'aitaita | 600 | ||||
| ZG22Mn | Uamea Manganese | Fa'asalaina | 880 - 900 | Malili i le ea | 155 |
| Fa'aitaita | 680 - 700 | ||||
| ZG25Mn | Uamea Manganese | Fa'alili po'o le Fa'asalaina | / | / | 155 - 170 |
| ZG25Mn2 | Uamea Manganese | 200 - 250 | |||
| ZG30Mn | Uamea Manganese | 160 - 170 | |||
| ZG35Mn | Uamea Manganese | Fa'asalaina | 850 - 860 | Malili i le ea | / |
| Fa'aitaita | 560 - 600 | ||||
| ZG40Mn | Uamea Manganese | Fa'asalaina | 850 - 860 | Malili i le ea | 163 |
| Fa'aitaita | 550 - 600 | Fa'alili ile ogaumu | |||
| ZG40Mn2 | Uamea Manganese | Fa'asusu | 870 - 890 | Fa'alili ile ogaumu | 187 - 255 |
| Tinei | 830 - 850 | Fa'alili ile suauu | |||
| Fa'aitaita | 350 - 450 | Malili i le ea | |||
| ZG45Mn | Uamea Manganese | Fa'asalaina | 840 - 860 | Malili i le ea | 196 - 235 |
| Fa'aitaita | 550 - 600 | Fa'alili ile ogaumu | |||
| ZG45Mn2 | Uamea Manganese | Fa'asalaina | 840 - 860 | Malili i le ea | ≥ 179 |
| Fa'aitaita | 550 - 600 | Fa'alili ile ogaumu | |||
| ZG50Mn | Uamea Manganese | Fa'asalaina | 860 - 880 | Malili i le ea | 180 - 220 |
| Fa'aitaita | 570 - 640 | Fa'alili ile ogaumu | |||
| ZG50Mn2 | Uamea Manganese | Fa'asalaina | 850 - 880 | Malili i le ea | / |
| Fa'aitaita | 550 - 650 | Fa'alili ile ogaumu | |||
| ZG65Mn | Uamea Manganese | Fa'asalaina | 840 - 860 | / | 187 - 241 |
| Fa'aitaita | 600 - 650 | ||||
| ZG20SiMn | Silico-Maganese uamea | Fa'asalaina | 900 - 920 | Malili i le ea | 156 |
| Fa'aitaita | 570 - 600 | Fa'alili ile ogaumu | |||
| ZG30SiMn | Silico-Maganese uamea | Fa'asalaina | 870 - 890 | Malili i le ea | / |
| Fa'aitaita | 570 - 600 | Fa'alili ile ogaumu | |||
| Tinei | 840 - 880 | Fa'alili ile suauu/vai | / | ||
| Fa'aitaita | 550 - 600 | Fa'alili ile ogaumu | |||
| ZG35SiMn | Silico-Maganese uamea | Fa'asalaina | 860 - 880 | Malili i le ea | 163 - 207 |
| Fa'aitaita | 550 - 650 | Fa'alili ile ogaumu | |||
| Tinei | 840 - 860 | Fa'alili ile suauu | 196 - 255 | ||
| Fa'aitaita | 550 - 650 | Fa'alili ile ogaumu | |||
| ZG45SiMn | Silico-Maganese uamea | Fa'asalaina | 860 - 880 | Malili i le ea | / |
| Fa'aitaita | 520 - 650 | Fa'alili ile ogaumu | |||
| ZG20MnMo | Manganese Molybdenum Steel | Fa'asalaina | 860 - 880 | / | / |
| Fa'aitaita | 520 - 680 | ||||
| ZG30CrMnSi | Chromium Manganese Silicon Steel | Fa'asalaina | 800 - 900 | Malili i le ea | 202 |
| Fa'aitaita | 400 - 450 | Fa'alili ile ogaumu | |||
| ZG35CrMnSi | Chromium Manganese Silicon Steel | Fa'asalaina | 800 - 900 | Malili i le ea | ≤ 217 |
| Fa'aitaita | 400 - 450 | Fa'alili ile ogaumu | |||
| Fa'asalaina | 830 - 860 | Malili i le ea | / | ||
| 830 - 860 | Fa'alili ile suauu | ||||
| Fa'aitaita | 520 - 680 | Fa'alili ile ea/ogāumu | |||
| ZG35SiMnMo | Silico-manganese-molybdenum sila | Fa'asalaina | 880 - 900 | Malili i le ea | / |
| Fa'aitaita | 550 - 650 | Fa'alili ile ea/ogāumu | |||
| Tinei | 840 - 860 | Fa'alili ile suauu | / | ||
| Fa'aitaita | 550 - 650 | Fa'alili ile ogaumu | |||
| ZG30Cr | Uamea Chrome | Tinei | 840 - 860 | Fa'alili ile suauu | ≤ 212 |
| Fa'aitaita | 540 - 680 | Fa'alili ile ogaumu | |||
| ZG40Cr | Uamea Chrome | Fa'asalaina | 860 - 880 | Malili i le ea | ≤ 212 |
| Fa'aitaita | 520 - 680 | Fa'alili ile ogaumu | |||
| Fa'asalaina | 830 - 860 | Malili i le ea | 229 - 321 | ||
| Tinei | 830 - 860 | Fa'alili ile suauu | |||
| Fa'aitaita | 525 - 680 | Fa'alili ile ogaumu | |||
| ZG50Cr | Uamea Chrome | Tinei | 825 - 850 | Fa'alili ile suauu | ≥ 248 |
| Fa'aitaita | 540 - 680 | Fa'alili ile ogaumu | |||
| ZG70Cr | Uamea Chrome | Fa'asalaina | 840 - 860 | Malili i le ea | ≥ 217 |
| Fa'aitaita | 630 - 650 | Fa'alili ile ogaumu | |||
| ZG35SiMo | Silicon molybdenum uamea | Fa'asalaina | 880 - 900 | / | / |
| Fa'aitaita | 560 - 580 | ||||
| ZG20Mo | Uamea Molybdenum | Fa'asalaina | 900 - 920 | Malili i le ea | 135 |
| Fa'aitaita | 600 - 650 | Fa'alili ile ogaumu | |||
| ZG20CrMo | Chrome-molybdenum sila | Fa'asalaina | 880 - 900 | Malili i le ea | 135 |
| Fa'aitaita | 600 - 650 | Fa'alili ile ogaumu | |||
| ZG35CrMo | Chrome-molybdenum sila | Fa'asalaina | 880 - 900 | Malili i le ea | / |
| Fa'aitaita | 550 - 600 | Fa'alili ile ogaumu | |||
| Tinei | 850 | Fa'alili ile suauu | 217 | ||
| Fa'aitaita | 600 | Fa'alili ile ogaumu | |||
O uiga o le vevela o le Medium ma Low Alloy Steel Castings:
1. Medium ma maualalo u'amea u'amea castings e tele lava fa'aaogaina i masini alamanuia e pei o taavale, tractors, nofoaafi, masini faufale, ma faiga hydraulic. O nei alamanuia e mana'omia ai fa'amea ma le malosi lelei ma le faigata. Mo fa'ameamea e mana'omia ai le malosi fa'amalosi e itiiti ifo i le 650 MPa, e masani ona fa'aaogaina le fa'avasegaina + fa'afefeteina o le vevela; mo castings uʻamea feololo ma maualalo e manaʻomia se malosi tensile e sili atu nai lo le 650 MPa, faʻaogaina + faʻafefeteina vevela vevela vevela faʻaaogaina. A maeʻa ona faʻafefe ma faʻafefeteina, o le fausaga uʻamea o le tuʻuina atu o le uamea e faʻafefeteina sorbite, ina ia maua ai le malosi maualuga ma le malosi lelei. Ae peitaʻi, pe a le fetaui le foliga ma le lapopoa o le tuʻuina atu mo le faʻamalo, e tatau ona faʻaogaina le masani + faʻafefe nai lo le faʻafefe ma le faʻafefe.
2. E sili atu le faia o le normalizing po o le normalizing + tempering pretreatment aʻo leʻi tineia ma faʻafefeteina o faʻataʻitaʻiga uʻamea uʻamea ma maualalo. I lenei auala, e mafai ona faamamaina le fatu tioata o le uʻamea uʻamea ma le toniga fausaga, ma faʻaleleia ai le aʻafiaga o le faʻamaʻi mulimuli ma le faʻafefeteina o togafitiga, ma fesoasoani foi e aloese mai aʻafiaga leaga o le faʻamaʻiina o le mamafa i totonu o le lafo.
3. A maeʻa le faʻamaʻiina o togafitiga, e tatau ona maua le fausaga martensite i le tele e mafai ai. Ina ia ausia lenei sini, e tatau ona filifilia le vevela vevela ma le cooling medium e tusa ai ma le togi sila vasega, hardenability, lafo puipui mafiafia, foliga ma isi mea.
4. Ina ia mafai ona fetuutuunai le fausaga tineia o le u'amea lafo ma aveesea le mamafa tineia, e tatau ona vave fa'afefeteina le u'amea u'amea ma maualalo castings u'amea pe a uma.
5. I lalo o le manatu o le le faʻaitiitia o le malosi o le uʻamea uʻamea, e mafai ona faʻamalosia le faʻaogaina o le uʻamea maualalo-carbon. Toughening togafitiga e mafai ona faʻaleleia le palasitika ma le faigata o faʻamea uʻamea.
Temperature ma le Maaa o Low Alloy Steel ina ua uma QT Heat Treatment
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| Maualalo ma Medium Alloy Steel Grade | Fua vevela / ℃ | Tempering Temperature / ℃ | Malosi / HBW |
| ZG40Mn2 | 830 - 850 | 530 - 600 | 269 - 302 |
| ZG35Mn | 870 - 890 | 580 - 600 | ≥ 195 |
| ZG35SiMnMo | 880 - 920 | 550 - 650 | / |
| ZG40Cr1 | 830 - 850 | 520 - 680 | / |
| ZG35Cr1Mo | 850 - 880 | 590 - 610 | / |
| ZG42Cr1Mo | 850 - 860 | 550 - 600 | 200 - 250 |
| ZG50Cr1Mo | 830 - 860 | 540 - 680 | 200 - 270 |
| ZG30CrNiMo | 860 - 870 | 600 - 650 | ≥ 220 |
| ZG34Cr2Ni2Mo | 840 - 860 | 550 -600 | 241 - 341 |
Taimi meli: Iul-31-2021