Idizayini ye-sand core iyisici esibalulekile senqubo yokuphonsa kuma-foundries, lapho ukwakheka okuyinkimbinkimbi kanye nemigodi yangaphakathi yakheka ezingxenyeni zensimbi. Ukuqonda izinhlobo ezahlukene zama-sand cores, izimiso zokuzibeka, ukulungiswa kwazo kanye nokuma kwazo kubalulekile ekukhiqizeni ukukhishwa kwekhwalithi ephezulu.
Izinhlobo zeSand Cores
Ama-sand cores afika ngezinhlobo ezahlukahlukene, ngalinye lisebenzela injongo ethile enqubweni yokulingisa:
1.I-Dry Sand Cores: Lezi zenziwe ngesihlabathi esiboshwe nge-resin futhi zibhakwa ukuze kuthuthukiswe amandla. Asetshenziselwa izimo eziyinkimbinkimbi kanye nezimbotshana zangaphakathi lapho kudingeka khona ukunemba kobukhulu obuphezulu.
2.Green Sand Cores: Lezi zakhiwe ngesihlabathi esimanzi futhi ngokuvamile zisetshenziswa ezinhlelweni ezilula lapho amandla aphezulu kungenasidingo.
3.I-Oil Sand Cores: Lezi ziboshwe ngamafutha futhi zinikeza ukugoqeka okungcono kunezinhlayiya zesihlabathi ezomile, okuzenza zibe zilungele izinhlelo zokusebenza lapho ukususwa kalula kwengqikithi kuyadingeka.
4.Cold Box Cores: Lezi zenziwa kusetshenziswa i-binder eqina ekamelweni lokushisa, enikeza ibhalansi phakathi kwamandla kanye nokukhipha kalula.
5.I-Shell Cores: Lezi zidalwa kusetshenziswa isihlabathi esigcotshwe nge-resin esishiswayo ukuze senze igobolondo. Banikeza isiphetho esihle kakhulu sobuso kanye nokunemba kwe-dimensional.
Izimiso Eziyisisekelo Zokusetha I-Sand Core
Ukusetha ama-sand cores ngendlela efanele kubalulekile kwikhwalithi yokulingisa kokugcina. Izimiso eziyisisekelo zihlanganisa:
1.Ukuqondanisa: Ama-cores kufanele aqondaniswe ngokunembile nesikhunta ukuze kuqinisekiswe ukuthi ubukhulu bokugcina bokubunjwa bulungile. Ukungaqondi kahle kungaholela ekulimaleni okufana nokungahambi kahle nokushintshashintsha.
2.Ukuzinza: Ama-cores kumele azinze ngaphakathi kwesikhunta ukuze agweme ukunyakaza ngesikhathi sokuthulula, okungase kubangele ukukhubazeka kokuphonsa.
3.Ukungenisa umoya: Ukungenisa umoya okulungile kufanele kuhlinzekwe ukuze kuvunyelwe amagesi ukuba aphume ngesikhathi sokuthela, ukuvimbela ukushuba kwegesi ekuphonsweni kokugcina.
4.Ukusekela: Izakhiwo zokusekela ezanele kufanele zibe khona ukuze zibambe ama-cores endaweni, ikakhulukazi ekubunjweni okuyinkimbinkimbi lapho kusetshenziswa khona ama-cores amaningi.
Ukulungiswa kanye nokuma kweSand Cores
Ukulungiswa nokubekwa kwama-sand cores kufinyelelwa ngezindlela ezihlukahlukene ukuze kuqinisekiswe ukuthi ahlala esendaweni ngesikhathi sokuphonsa:
1.Okuphrintiwe Okubalulekile: Lezi izandiso zesikhunta esibamba umongo endaweni. Banikeza izindlela zokulungisa umnyombo kanye nokuqinisekisa ukuqondana.
2.Ama-Chaplets: Lezi izisekelo zensimbi ezincane ezibamba umgogodla endaweni. Aklanyelwe ukuhlanganisa nensimbi encibilikisiwe, abe yingxenye yokubunjwa kokugcina.
3.Amabhokisi Abalulekile: Lawa asetshenziselwa ukwakha ama-sand cores futhi aqinisekise ukuthi angena kahle ngaphakathi kwesikhunta. Umklamo webhokisi eliwumgogodla kufanele ubhekane nokuncipha nokwanda kwesihlabathi.
I-Negative Cores
Ama-negative cores, noma ama-core negatives, asetshenziselwa ukwakha ama-undercuts noma izici zangaphakathi ezingakwazi ukwakheka ngama-cores avamile. Ngokuvamile zenziwe nge-wax noma ezinye izinto ezingasuswa ngemva kwenqubo yokuphonsa. Ukwakhiwa kwama-cores angalungile kudinga ukucatshangelwa ngokucophelela ukuze kuqinisekiswe ukuthi angasuswa kalula ngaphandle kokulimaza ukusakaza.
Ukungenisa umoya, ukuhlanganisa, kanye nokuhlanganiswa kwangaphambili kwama-Sand Cores
1.Ukungenisa umoya: Ukukhipha umoya ngendlela efanele kubalulekile ukuvumela amagesi akhiqizwe phakathi nenqubo yokuthela ukuba abaleke. Ama-vents angenziwa ngaphakathi komgogodla noma angezwe njengezingxenye ezihlukene. Ukukhipha umoya okwanele kungaholela ekuqineni kwegesi nokunye ukonakala kokukhipha umoya.
2.Umhlangano: Ezibunjeni eziyinkimbinkimbi, ama-cores amaningi angase adinge ukuqoqwa ukuze akhe umumo wokugcina. Lokhu kudinga ukuqondanisa okunembile nokulungiswa ukuze kuqinisekiswe ukuthi ama-cores ahlangana kahle. Izihluthulelo zomhlangano kanye nezakhiwo zivame ukusetshenziselwa ukusiza kule nqubo.
3.I-Pre-Assembly: Ukuhlanganisa ama-cores ngaphambili ngaphandle kwesikhunta kungathuthukisa ukunemba futhi kunciphise isikhathi sokusetha. Lokhu kuhlanganisa ukuhlanganisa ama-cores abe yiyunithi eyodwa ngaphambi kokuwafaka emgodini wokubumba. I-pre-assembly iwusizo ikakhulukazi kuma-cores amakhulu noma ayinkimbinkimbi okunzima ukuwaphatha ngawodwana.
Isikhathi sokuthumela: Oct-31-2024