Izinga lokuhlolwa kwensimbi ethambile liyisisekelo esiyisisekelo sokukhiqizwa kwensimbi ethambile, ukuhlolwa kwekhwalithi yomkhiqizo, kanye nokulawulwa kwekhwalithi. Ukuhlaziywa kwensimbi ethambile kanye nokuhlolwa kobulukhuni kungenziwa ngokuhambisana nezinga lomhlaba wonke le-ISO 945-4:2019 Ukuhlolwa kwensimbi ethambile, futhi inqubo imi kanje:
I.Ukusika Nokuthatha Amasampula:
Umshini wokusika we-metallographic usetshenziselwa ukusika isampula. Ukupholisa amanzi kusetshenziswa kuyo yonke inqubo yokusika ukuvimbela izinguquko esakhiweni se-metallographic sesampula esibangelwa izindlela ezingafanele zokuthatha amasampula. Ngokukhethekile, amamodeli ahlukene emishini yokusika ye-metallographic angakhethwa ukusika nokuthatha amasampula ngokusekelwe kusayizi wesampula kanye nezinqubo ezizenzakalelayo ezidingekayo.
II.Isampula Yokugaya Nokupholisha:
Ngemva kokusika, isampula (yezinto zokusebenza ezingajwayelekile, umshini wokufaka nawo uyadingeka ukwenza isampula) igaywa emshinini wokugaya nokupholisha wesampula ye-metallographic kusetshenziswa ama-sandpaper anobukhulu obuhlukene begrit kusukela kokukhulu kuya kokuncane. Izinhlobo ezintathu noma ezine zama-sandpaper zingakhethwa ukuze zigaywe ngokwezinto zokusebenza ezahlukene, futhi isivinini sokujikeleza komshini wokugaya nokupholisha sidinga nokukhethwa ngokusekelwe kumkhiqizo.
Isampula ngemva kokugaya i-sandpaper ipholishwa kusetshenziswa indwangu yokupholishwa ene-compound yokupholishwa kwedayimane. Ijubane lokujikeleza komshini wokugaya nokupholishwa lingalungiswa ngokuya ngomsebenzi.
III.Ukuhlolwa kwe-Metallographic:
Ngokuhambisana nezidingo ze-GB/T 9441-2021 Metallographic Testing Standard ye-Ductile Iron, kukhethwa i-microscope ye-metallographic enokukhulisa okufanele ukuthatha izithombe zesakhiwo se-metallographic ngaphambi nangemva kokugqwala.
IV.Ukuhlolwa Kokuqina Kwe-Ductile Iron:
Ukuhlolwa kokuqina kwensimbi ethambile kusekelwe ku-ISO 1083:2018 ejwayelekile yamazwe ngamazwe. Ukuqina kweBrinell (HBW) kuyindlela yokuhlola ubulukhuni ekhethwayo nezinzile kakhulu.
- Imibandela Esebenzayo
Ubukhulu besampula: ≥ 10mm (ububanzi bokugoba d ≤ 1/5 yobukhulu besampula)
Isimo Somphezulu: Ubulukhuni bomphezulu i-Ra ngemva kokucutshungulwa bungu-≤ 0.8μm (akukho sikali, imigodi yesihlabathi, noma imigodi yokuphefumula)
- Imishini namapharamitha
| Into Yepharamitha | Isidingo Esijwayelekile (se-Ductile Iron Ngokuqondile) | Isisekelo |
| Ububanzi be-Indenter (D) | 10mm (okukhethwayo) noma 5mm (kumasampula amancane) | Sebenzisa u-10mm uma i-HBW ≤ 350; sebenzisa u-5mm uma i-HBW > 350 |
| Faka i-ApplyForce (F) | Kwe-indenter engu-10mm: 3000kgf (29420N); Kwe-indenter engu-5mm: 750kgf (7355N) | F = 30×D² (Ifomula yokuqina kweBrinell, ukuqinisekisa ukuthi ukugoba kufana nosayizi wegraphite) |
| Isikhathi Sokuhlala | Imizuzwana eyi-10-15 (imizuzwana eyi-15 ye-ferritic matrix, imizuzwana eyi-10 ye-pearlitic matrix) | Ukuvimbela ukuguqulwa kwe-graphite ukuthi kungathinti ukulinganiswa kokufakwa kwe-indentation |
Isikhathi sokuthunyelwe: Novemba-26-2025
