Green Sand Castings are castings made using wet sand or “green sand” molds. The sand is not green in color nor do the molds use “greensand,” a greenish color sandstone. Instead of the sand is called “green” because it has moisture in it (like green wood) before the sand dries out when molten metal is poured in the mold.
What gives the sand moisture and helps the sand stick together when making molds is the clay that is mixed in the sand. Bentonite clay and the sand mixed together provide strong molds that can be created on an automated assembly line.
I-Sintered Ceramic Foundry sand ikakhulukazi yenziwe ngamaminerali aqukethe i-Al2O3 ne-SiO2 futhi yengezwe nezinye izinto ezimbiwa phansi. Isihlabathi se-Foundry esiyindilinga esenziwe ngempushana, i-pelletizing, i-sintering kanye nezinqubo zokugreda. Isakhiwo sayo esiyinhloko sekristalu yi-Mullite ne-Corundum, enomumo oyindilinga wokusanhlamvu, i-refractoriness ephezulu, ukuzinza okuhle kwe-thermochemical, ukwanda okushisayo okuphansi, umthelela kanye nokumelana nokuhuzuka, izici zokuhlukana okuqinile. Lapho isihlabathi se-ceramic sisetshenziswa enqubweni yesihlabathi esiluhlaza, singase sikhulise izikhathi ezisetshenziswa kabusha isihlabathi esingavuthiwe, kunciphise ukukhishwa kwesihlabathi semfucuza, kuthuthukiswe isivuno sokuphonsa.
● Ukumelana nezinga lokushisa eliphakeme kakhulu kanye nokuphefumula okuhle kakhulu kwenza izinga eliphezulu lokubuyisela isihlabathi ngomshini, ukunciphisa ukukhishwa kwesihlabathi semfucuza.
● Ukungena okuphezulu. Ukungeneka kwesihlabathi esiluhlaza esixutshwe nesihlabathi sokuphonsa se-ceramic sintered kwakuphakeme kunaleso esixutshwe yisihlabathi se-quartz ngaphansi kwezimo zenqubo efanayo.
Ukusabalalisa usayizi wezinhlayiyana kungenziwa egcizelele ngokuvumelana nemfuneko yakho.
I-Mesh |
20 | 30 | 40 | 50 | 70 | 100 | 140 | 200 | 270 | Ipani | I-AFS | |
μm |
850 | 600 | 425 | 300 | 212 | 150 | 106 | 75 | 53 | Ipani | ||
ikhodi | 40/70 | ≤5 | 20-30 | 40-50 | 15-25 | ≤8 | ≤1 | 43±3 | ||||
70/40 | ≤5 | 15-25 | 40-50 | 20-30 | ≤10 | ≤2 | 46±3 | |||||
50/100 | ≤5 | 25-35 | 35-50 | 15-25 | ≤6 | ≤1 | 50±3 | |||||
100/50 | ≤5 | 15-25 | 35-50 | 25-35 | ≤10 | ≤1 | 55±3 | |||||
70/140 | ≤5 | 25-35 | 35-50 | 8-15 | ≤5 | ≤1 | 65±4 |
Izigaba zemikhiqizo