Ductile dade yɛ dade, carbon, ne silicon titiriw. Sɛ wɔde aduru bi a ɛma ɛyɛ kurukuruwa ka dade a ayow no ho a, carbon no pue titiriw sɛ graphite a ɛyɛ kurukuruwa, na ɛma dade a ɛyɛ den no yɛ den. Nneɛma a wɔtaa yɛ no yɛ ductile iron no fa magnesium kakraa bi a wɔde bɛka ho wɔ fam-sulfur dade a ayow. Esiane sɛ magnesium ma carbides ba nti, ɛsɛ sɛ wɔde silicon nso ka ho de ko tia saa nkɛntɛnso yi. Saa ayaresa yi ma graphite a ɛyɛ kurukuruwa ba. Nea ɛnte sɛ dade a wɔde dade ayɛ a ɛyɛ fitaa no, ductile dade nyɛ eutectic colonies bere a wɔreyɛ den no. Mpɛn pii no, graphite kurukuruwa no kɛse bɛyɛ 1.0% wɔ abura no mu-a wɔayɛ no eutectic colonies a ɛwɔ dade a ɛyɛ fitaa mu.
| Mfiridwuma mu nneɛma ne ne nkyekyɛmu a ɛfa ferritic-pearlitic ductile iron ho . | ||||||
| Nneɛma a wɔde yɛ adwuma . | Tensile ahoɔden r/MPa . kɛse sen anaasɛ ɛne no yɛ pɛ . |
Tebea mu aba ahoɔden . r,o.2/mpa a ɛboro anaasɛ ɛne no yɛ pɛ . |
Elongation akyi a abubu . a(%) a ɛboro anaasɛ ɛne no yɛ pɛ . |
HBW . |
Ɔfasu no mu duru . /mm . |
Matrix nhyehyɛe titiriw . |
| QT350-22 na ɛwɔ hɔ. | 350 | 220 | 22 | nea ennu anaasɛ ɛne no yɛ pɛ 160 . | nea ennu anaasɛ ɛne 30 yɛ pɛ . | Ferrite . |
| QT400-18. | 400 | 250 | 18 | 130-175 | nea ennu anaasɛ ɛne 30 yɛ pɛ . | Ferrite . |
| QT400-15 na ɛwɔ hɔ. | 400 | 250 | 15 | 135-180 | nea ennu anaasɛ ɛne 30 yɛ pɛ . | Ferrite . |
| QT450-10. | 450 | 310 | 10 | 160~210 | nea ennu anaasɛ ɛne 30 yɛ pɛ . | Ferrite . |
| QTS00-7. | 500 | 320 | 7 | 170~230 | nea ennu anaasɛ ɛne 30 yɛ pɛ . | Ferrite + Pearlite . |
| QT550-5. | 550 | 350 | 5 | 180-250 | nea ennu anaasɛ ɛne 30 yɛ pɛ . | Ferrite + Pearlite . |
| QT600-3. | 600 | 370 | 3 | 190-270 | nea ennu anaasɛ ɛne 30 yɛ pɛ . | Pearlite + ferrite . |
| QT700-2. | 700 | 420 | 2 | 225-305 | nea ennu anaasɛ ɛne 30 yɛ pɛ . | Pearlite . |
| QT800-2. | 800 | 480 | 2 | 245-335 | nea ennu anaasɛ ɛne 30 yɛ pɛ . | Pearlite anaa sorbite . |
| QT900-2. | 900 | 600 | 2 | 280-360 | nea ennu anaasɛ ɛne 30 yɛ pɛ . | martensite a wɔahyɛ no den anaasɛ flexion . Stenite + sorbite . |
