Mphamvu ya zinthu zisanu zazikulu za ductile iron pa castings

The mankhwala zikuchokera ductile iron makamaka zikuphatikizapo zinthu zisanu wamba carbon, pakachitsulo, manganese, sulfure ndi phosphorous. Kwa ma castings ena omwe ali ndi zofunikira zapadera pakukonzekera ndi magwiridwe antchito, kachulukidwe kakang'ono ka alloying amaphatikizidwanso. Mosiyana ndi chitsulo wamba wa imvi, chitsulo cha ductile chiyeneranso kukhala ndi zinthu zotsalira za spheroidal kuti zitsimikizire kuti graphite spheroidization. Timapanga zosiyanasiyanakuponyedwa kwa magalimoto aku Japan ndi ku Europe, mongamasika bracket, unyolo wamasika,kasupe pini ndi kasupe bushing.

1, Carbon ndi mpweya wofanana kusankha mfundo: mpweya ndiye chinthu chofunikira kwambiri cha chitsulo cha ductile, mpweya wambiri umathandizira graphitization. Komabe, kuchuluka kwa kaboni kumapangitsa kuti ma graphite ayandame. Choncho, malire apamwamba a mpweya wofanana mu ductile chitsulo zimachokera pa mfundo yopanda graphite yoyandama.

2, Mfundo yosankha silicon: Silicon ndi chinthu cholimba cha graphitizing. Mu chitsulo ductile, pakachitsulo sangathe bwino kuchepetsa chizolowezi woyera pakamwa ndi kuonjezera kuchuluka kwa ferrite, komanso ali ndi udindo kuyenga masango eutectic ndi kuwongolera kuzungulira kwa graphite magawo.

3, Manganese kusankha mfundo: Monga sulfure zili mu ductile chitsulo kale otsika kwambiri, safuna manganese kwambiri kuti neutralize sulfure, udindo wa manganese mu ductile chitsulo makamaka kuonjezera bata wa pearlite.

4, Mfundo za kusankha phosphorus: phosphorous ndi chinthu chovulaza, ndi chotsika kwambiri chosungunuka muzitsulo zotayidwa. Ambiri, m'munsi zili phosphorous mu ductile chitsulo, bwino.

5, Sulphur kusankha mfundo: Sulfure ndi anti-spherical element, imakhala ndi mgwirizano wamphamvu ndi magnesium, nthaka yosowa ndi zinthu zina zozungulira, kupezeka kwa sulfure kumawononga zinthu zambiri za spheroidal mu ferrofluid, mapangidwe a magnesium ndi osowa. sulfide lapansi, zomwe zimayambitsa slag, porosity ndi zolakwika zina zoponya.

6, Mfundo yosankha zinthu za spheroidal: powonetsetsa kuti spheroidal ndi yoyenerera, kuchuluka kotsalira kwa magnesium ndi dziko losowa kuyenera kukhala kotsika momwe kungathekere. Magnesium ndi zotsalira zosawerengeka zapadziko lapansi ndizokwera kwambiri, zidzakulitsa chizolowezi cha mkamwa woyera wamadzimadzi achitsulo, ndipo zidzakhudza makina a castings chifukwa cha tsankho pamalire a tirigu.