Ukuze kuthintelwe ukuphosa kwi-deformation, ii-cracks kunye nezinye iziphene ngenxa yokupholisa ngokukhawuleza emva kokuthululwa, kunye nokuqinisekisa ukuba i-castings inamandla okwaneleyo kunye nokuqina ngexesha lokucoca isanti, i-castings kufuneka ibe nexesha elaneleyo lokupholisa kwi-mold. Iisamente eziveliswa ngokuqhubekayo kufuneka ziyilwe ngobude obaneleyo becandelo lokupholisa ukuqinisekisa ixesha lokupholisa lokusahlelwa.
Ixesha lokupholisa kwi-mold of castings linxulumene nezinto ezininzi ezinjengobunzima, ubukhulu bodonga, ubunzima, uhlobo lwe-alloy, iimpawu zokubumba, iimeko zemveliso kunye nezinye izinto zokuphosa.
一、 Ixesha lokupholisa lamalungu entsimbi ekubunjweni kwesanti
Ixesha lokupholisa lamacandelo entsimbi ekubunjweni kwesanti lichongwa ngokusekelwe kwiqondo lokushisa xa ukhulula. Unokubhekisela kule datha ilandelayo: 300-500 ° C ngokukhutshwa ngokubanzi; I-200-300 ° C ye-castings ejongene nokuqhekeka okubandayo kunye nokuguqulwa; I-200-300 ° C yee-castings ethanda ukuqhekeka okutshisa Ubushushu be-Casting yi-800-900 ℃. Ngokukhawuleza emva kokukhupha, susa isikhuseli sokugalela kwaye ucoce undoqo wesanti, uze uwubeke emhadini wesanti eshushu okanye ungene eziko ukupholisa kancinci.
1, Ixesha lokupholisa iindawo zentsimbi ekubunjweni kwesanti zingakhethwa ngokubhekisele kwiThebhile 11-2-1 kunye neTheyibhile 11-2-3.
Itheyibhile 11-2-1 Ixesha lokupholisa lokuphoswa okuphakathi kunye nokuncinci kwi-santi mold
| Ubunzima bokuphosa / kg | <5 | 5~10 | 10-30 | 30~50 | 50~100 | 100~250 | 250~500 | 500~1000 |
| Ubunzima bodonga lokuphosa/mm | <8 | <12 | <18 | <25 | <30 | <40 | <50 | <60 |
| Ixesha lokupholisa/umzuzu | 20-30 | 25-40 | 30~60 | 50~100 | 80-160 | 120-300 | 240~600 | 480~720 |
Qaphela: Ukuphoswa kweendonga ezincinci, ubunzima obulula kunye nesakhiwo esilula, ixesha lokupholisa kufuneka lithathwe njengexabiso elincinci, ngaphandle koko, ixesha lokupholisa kufuneka lithathwe njengexabiso elikhulu.
Itheyibhile 11-2-2 Ixesha lokupholisa lokuphosa okukhulu kwi-santi mold
| Ubunzima bokuphosa/t | 1~5 | 5~10 | 10–15 | 15-20 | 20-30 | 30~50 | 50~70 | 70-100 |
| Ixesha lokupholisa/h | 10–36 | 36~54 | 54~72 | 72-90 | 90~126 | 126-198 | 198-270 | 270~378 |
Qaphela: Xa kusenziwa imodeli yemingxuma, ixesha lokupholisa kufuneka lonyuswe malunga ne-30%.
Itheyibhile 11-2-3 Ixesha lokupholisa kwi-sand mold ye-castings ephakathi kunye nencinci ngexesha lokugalela imveliso
| ubunzima/kg | <5 | 5~10 | 10-30 | 30~50 | 50~100 | 100~250 | 250~500 |
| Ixesha lokupholisa/umzuzu | 8~12 | 10–15 | 12-30 | 20~50 | 30~70 | 40~90 | 50~120 |
Qaphela: 1. Ubunzima bokuphosa bubhekisa kubunzima bubonke kwibhokisi nganye
I-2, ii-Castings zipholiswa ngenkani ngokungena komoya kumgca wemveliso, kwaye ixesha lokupholisa lifutshane.
Ixesha lokupholisa elikwi-in-mold le-iron castings enkulu linokubalwa ngokuhambelana nale fomula yovavanyo ilandelayo.
t=vG (2-1)
kwifomula t——Ixesha lokupholisa (h)
v——Isantya sokupholisa, thatha 4 ~ 8h/t
g——Ubunzima bokuphosa (t)
k ngumlinganiselo wobunzima bokuphosa kumthamo wayo wecontour. Ixabiso elikhulu le-k, ukutyeba kodonga lokuphosa kunye nexesha lokupholisa elide. Ifomula yokubala ka-k ngu
k=G/V (2-2)
kwifomula k——Ubunzima bokubunjwa kunye nomlinganiselo womthamo wecontour (t/m³);
G——Ubunzima bokuphosa (t)
V——Umthamo wecontour yangaphandle kancinci (m³)
二、 Ixesha lokupholisa lokuphoswa kwentsimbi kubumba lwesanti
Ukuchithwa kwentsimbi yokucoca isanti ye-hydraulic, ukudubula kwesanti eqhumayo kunye nokucoca isanti ye-pneumatic kufuneka kupholiswe kwi-250-450 ° C kwi-sand mold ukuze ishukume. Isanti ewayo ngaphezulu kwe-450°C inokubangela uguquko kunye nokuqhekeka kokusamente. Ixesha lokupholisa kwisikhunta sesanti singabonwa kwi-Figure 11-2-1 kunye noMzobo 11-2-3.
Xa usebenzisa le mifanekiso mithathu ingasentla, kufuneka unikele ingqalelo kwezi ngongoma zilandelayo:
(1) Xa ubunzima be-carbon steel casting budlula i-110t, ngesiseko sokufumana ixabiso lexesha lokupholisa elihambelana ne-110t ngokutsho kwe-Figure 11-2-2, kwi-1t eyongezelelweyo yobunzima, ukwandisa ixesha lokupholisa nge-1-3h.
(2) Xa ubunzima be-ZG310-570 kunye ne-alloy castings yensimbi idlula i-8.5t, ixesha lokupholisa linokuphinda liphindwe kabini xa lithelekiswa nexabiso lexesha lokupholisa le-carbon steel castings efunyenwe ngokoMzobo 11-2-1 kunye noMzobo 11-2-2 .
3 I-castings enjalo inokupholiswa ngokwemvelo emgodini wokuthulula ngaphandle kokunyanga ubushushu kwiziko, kwaye ixesha lokulondoloza ubushushu libalwa njenge-1.5-2t rhoqo kwiiyure ezingama-24.
(4) Ukwenziwa kweesamente ezinezakhiwo ezintsonkothileyo, iiyantlukwano zobukhulu bodonga olukhulu, kwaye ziqhelene nokuqhekeka, ixesha lokupholisa kufuneka libe malunga ne-30% ubude kunexabiso elichazwe kumfanekiso.
5 Oku kuya kwandisa izinga lokupholisa, ngoko ixesha lokupholisa linokufinyezwa nge-10%.
三、Ubushushu bomngundo wokusahlelwa kwengxubevange engeyontsimbi
Iqondo lokushisa lokubumba le-non-ferrous alloy castings linokufumaneka ngokweThebhile 11-2-4.
Itheyibhile 11-2-4 Ukushisa kwe-Extrusion ye-non-ferrous alloy castings
| Ukuphosa iimpawu zesakhiwo | Iimpawu zokuphosa | I-alloy iphosa intlalontle yoluntu | Indawo yokulahla indawo | Ubushushu bokuphuma buphosa/℃ | |
| Izinto ezincinci neziphakathi | Izinto ezinkulu | ||||
| Ubume obulula kunye nobukhulu bodonga obufanayo | I-coreless, ingundoqo emanzi, uhlobo olumanzi | Ukuthambekela kokuqhekeka okushushu kuncinci, njenge-AI-Si alloy | Ubushushu buphezulu kakhulu kwaye akukho drafti | 300~500 | 250~300 |
| Undoqo owomileyo, uhlobo olomileyo | 250~300 | 200~250 | |||
| Ubume obulula kunye nobukhulu bodonga obufanayo | I-coreless, ingundoqo emanzi, uhlobo olumanzi | Ukuthambekela kokuqhekeka okutshisayo kuphezulu, njenge-AI-Cu series alloys | Ubushushu buphantsi kwaye kukho idrafti | 250~300 | 200~250 |
| Undoqo owomileyo, uhlobo olomileyo | 200~250 | 150-200 | |||
| Ubume obuntsonkothileyo kunye nobunzima bodonga olungalinganiyo | I-coreless, ingundoqo emanzi, uhlobo olumanzi | Ukuthambekela kokuqhekeka okushushu kuncinci, njenge-AI-Si alloy | Ubushushu buphezulu kakhulu kwaye akukho drafti | 200~250 | 150~250 |
| Undoqo owomileyo, uhlobo olomileyo | 150~250 | 100-200 | |||
| I-coreless, ingundoqo emanzi, uhlobo olumanzi | Ukuthambekela kokuqhekeka okutshisayo kuphezulu, njenge-AI-Cu series alloys | Ubushushu buphantsi kwaye kukho idrafti | 150-200 | 100-200 | |
| Undoqo owomileyo, uhlobo olomileyo | 100~150 | <100 | |||
Ixesha lokuposa: May-26-2024
