Mwero wekuongorora simbi ine ductile iron uchishandisa metallographic ndiyo hwaro hwekugadzirwa kwesimbi ine ductile iron, kuongororwa kwemhando yezvigadzirwa, uye kudzorwa kwemhando. Kuongorora simbi ine metallographic uye kuyedzwa kwekuomarara kunogona kuitwa zvichienderana nedanho repasi rose reISO 945-4:2019 Metallographic Inspection yeDuctile Iron, uye maitiro acho ndeekuti:
I.Kucheka uye Kutora Samples:
Muchina wekucheka metallographic unoshandiswa pakucheka sampuro. Kutonhodza mvura kunoshandiswa panguva yese yekucheka kudzivirira shanduko muchimiro che metallographic chemuenzaniso unokonzerwa nenzira dzisina kunaka dzekutora sampuro. Kunyanya, mhando dzakasiyana dzemuchina wekucheka metallographic dzinogona kusarudzwa kuti dzichekwe uye dzitore sampuro zvichienderana nehukuru hwesampuro uye maitiro anodiwa otomatiki.
II.Muenzaniso weKukuya neKupukuta:
Mushure mekucheka, sampuro (yemaworkpiece asina kurongeka, muchina wekukwidza unodiwawo kugadzira sampuro) inokuyiwa pamuchina wekukuya nekupukuta wesample metallographic uchishandisa sandpaper yehukuru hwakasiyana kubva pakukura kusvika pakukura. Mhando nhatu kana ina dzemasandpaper dzinogona kusarudzwa kuti dzikuyiwe zvichienderana nemaworkpiece akasiyana, uye kumhanya kwekutenderera kwemuchina wekukuya nekupukuta kunofanirwawo kusarudzwa zvichienderana nechigadzirwa.
Muenzaniso mushure mekukuya kwesandpaper unokweshwa uchishandisa jira rekukwesha rine dhaimani rekukwesha. Kumhanya kwekutenderera kwemuchina wekukwesha nekukwesha kunogona kugadziriswa zvichienderana nebasa.
III.Kuedzwa kweMetallographic:
Zvichienderana nezvinodiwa neGB/T 9441-2021 Metallographic Testing Standard yeDuctile Iron, maikorosikopu yemetallographic ine kukura kwakakodzera inosarudzwa kuti itore mifananidzo yechimiro chemetallographic isati yaora uye yapera.
IV.Kuedzwa kweDuctile Iron Kuoma:
Kuyedzwa kwekuomarara kwesimbi ine ductile kwakavakirwa pachiyero chepasi rose cheISO 1083:2018. Brinell Hardness (HBW) ndiyo nzira inonyanya kufarirwa uye yakagadzikana yekuedza kuomarara.
- Mamiriro Anoshanda
Ukobvu hwemuenzaniso: ≥ 10mm (dhayamita yekuisa mukati d ≤ 1/5 yeukobvu hwemuenzaniso)
Mamiriro Epamusoro: Kuomarara kwepamusoro Ra mushure mekugadzirisa i ≤ 0.8μm (hapana chikero, maburi ejecha, kana maburi ekufema)
- Midziyo uye Maparamita
| Chinhu cheParamende | Zvinodiwa Zvakajairika (zveDuctile Iron Kunyanya) | Hwaro |
| Dhayamita yeIndenter (D) | 10mm (inosarudzwa) kana 5mm (yemasampuli matete) | Shandisa 10mm kana HBW iri ≤ 350; shandisa 5mm kana HBW iri > 350 |
| ShandisaSimba (F) | Ye 10mm indenter: 3000kgf (29420N); Ye 5mm indenter: 750kgf (7355N) | F = 30×D² (Brinell hardness formula, zvichiita kuti indentation ienderane nehukuru hwegraphite) |
| Nguva Yokugara | Masekondi gumi kusvika gumi nemashanu (masekonzi gumi nemashanu eferritic matrix, gumi emasekonzi gumi epearlitic matrix) | Kudzivirira kushanduka kwegirafiti kuti isakanganise kuyerwa kwemukati meganda |
Nguva yekutumira: Mbudzi-26-2025
