Xa iinjineli zisithumelela isicelo sokucaphula, umbuzo omnye uvela phantse kuyo yonke incoko: "Yintoni ukunyamezela onokuyibamba?" Ngumbuzo onengqiqo-kodwa ikwayenye apho ulwazi oluncinci lugcina imali eninzi. Ukucacisa ngokugqithisileyo ukunyamezelana kwinxalenye ephosiweyo kwandisa iindleko ngokuthe cwaka ngoomatshini obungeyomfuneko, uhlolo olongezelelweyo, kunye ne-scrap. Ukungazicacisi kancinci kudala iingxaki zendibano emazantsi. Esi sikhokelo sichaza ukuba i-investment casting tolerances ithetha ntoni, indlela inkqubo ye-CT grade isebenza ngayo, kunye nendlela abathengi abanamava abayisebenzisa ngayo ukufumana ukuchaneka abakufunayo ngexabiso eliphantsi lilonke.
Kutheni uNyamezelo lweelwimi lubalulekile ekuCaleni
Iivenkile zomatshini zithetha ngokwemigangatho ye-IT (ISO 286) - ukunyamezela kulinganiswa kwikhulu le-millimeter, ephunyezwe ngokususa izinto eziphathekayo ngezixhobo eziqinileyo, ezicwangcisiweyo. Abaseki bathetha ulwimi olwahlukileyo. Amalungu eCast akhiwa ngesinyithi solwelo esiqina ngaphakathi kumngundo, kwaye ukwahluka kwawo kulawulwa kukuchaneka kwepateni yewax, ukwandiswa kweqokobhe, ukushwabana kwealloyi, kunye nenxalenye yejometri.
Umgangatho wamazwe ngamazwe wokunyamezela ukunyamezela yi- ISO 8062 , echaza uluhlu lwe "Casting Tolerance" amabakala - amabakala e-CT . I-CT inombolo ephantsi, iyancipha ukunyamezela. Ukuqonda apho inxalenye yakho iwela kwesi sikali sisiseko saso sonke isigqibo sokuthengwa kwempahla.
INkqubo yeBanga le-CT ngokujonga nje krwada
Amabanga eCT anika ibhendi yonyamezelo esekelwe kumlinganiselo oqhelekileyo wesici. Ibakala elifanayo le-CT livumela ibhendi epheleleyo ebanzi kumlinganiselo omkhulu kunomncinci. Njengesalathiso esisebenzayo sotyalo-mali lwentsimbi kunye nentsimbi:
- I-CT4–CT5 — eyona meko ilungileyo yotyalo-mali oluncinci (ngokuqhelekileyo ngaphantsi kwe-50 mm) kwinkqubo ye-silica sol
- I-CT5–CT6 — uluhlu oluqhelekileyo lwentengiso kuninzi lwe-silica sol yokutyalo-mali oluya kuthi ga kwi-~200 mm
- I-CT6–CT8 - eqhelekileyo kwiinkqubo zeglasi yamanzi kunye neejometri ezinkulu, ezinzima ngakumbi
- I-CT8–CT12 -indawo yokuphosa isanti kunye nokuphoswa kwesanti kunye nedrafti ephezulu kunye nokwahluka komgca wokwahlula
Ukuthelekisa, umlinganiselo we-100 mm phantsi kwamabakala ahlukeneyo unika umfanekiso onzima: I-CT4 ivumela malunga ne-± 0.26 mm, i-CT5 malunga ne-± 0.36 mm, i-CT6 malunga ne-± 0.5 mm, kunye ne-CT9 - i-santi efanelekileyo yokuphosa umfanekiso - malunga ne-± 1.5 mm. Kungenxa yoko le nto ukhetho lwenkqubo lulodwa, phambi kokuba naluphi na umatshini, likuthengele uphuculo oluphindwe kabini ukuya kwezine ekuchanekeni kokuphoswa.
Eyona nto iqhuba uNyamezelo kuTyalo-mali lokuCasa
Imiba emine ilawula ukuba indawo yakho ihlala phi kwisikali seCT:
1. Ukuchaneka kwepateni ye-wax. Yonke imilinganiselo yokuphosa izuza ilifa ukuchaneka kwepateni ye-wax eyakhayo. Inaliti yewax yanamhlanje ene-aluminiyam iyafa ibambe iipateni ukuya kumakhulu ambalwa eemilimitha, kodwa ukushwabana kwewax, ubushushu bokufa, kunye noxinzelelo lwenaliti zonke ziyahluka kancinci phakathi kokudubula. Eli lelokuqala - kwaye likhulu - igalelo ekulahleni ukwahluka, kwaye yiyo loo nto isakhono sobukhulu singenakwahlulwa kumgangatho wepatheni yesixhobo.
2. Ukuziphatha kweShell kunye nentsimbi. Igobolondo ye-ceramic yandisa kancinci ngexesha lokudubula, kwaye yonke i-alloy iyancipha ekuqinisweni - i-carbon steel malunga ne-2%, i-stainless steel 2.5-3%. I-Shrinkage ayifani ngokugqibeleleyo: iphenjelelwa lutshintsho lobuninzi becandelo, indawo yokubeka, kunye nendlela iinjineli ze-Foundry zondla ngayo. Amalungu antsonkothileyo anotshintsho olukhawulezileyo lwecandelo aluyi kucutheka ngokufanayo kwicala ngalinye, kwaye abasunguli abanezakhono bahlawula oku kwipatheni yokufa.
3. Icandelo lejometri. Iindawo ezide ezibhityileyo zinokuphambuka ngexesha lokususwa kweqokobhe okanye unyango lobushushu; iindawo ezineempawu ezahlulwe ngokubanzi ziqokelela iipateni kunye nokwahluka kweqokobhe kulo lonke ixesha. Uphawu oluyi-400 mm kude nedatum alusoze lubambe ibhanti enye njenge-40 mm kude - kungekhona ngenxa yokuba i-Foundry ayinankathalo, kodwa ngenxa yokuba impazamo iqokelelana kumgama.
4. Indlela yenkqubo. Amaqokobhe eglasi yamanzi anexabiso eliphantsi kodwa azinzanga kancinci kuneeqokobhe le-silica sol. Ukuba umzobo wakho ubiza i-CT5 kwibhodi iphela, uchaza i-silica sol - kwaye ixabiso libonisa. Ukuba i-CT7 ngenene yanele kwiimpawu ezingabalulekanga, iglasi yamanzi inokuphumelela isicatshulwa.
I-As-Cast vs Machined: Isigqibo esiGcina eyona mali ininzi
Owona msebenzi ubaluleke kakhulu ekuthengeni izinto kukuhlela yonke into ekumzobo ibe ngamabhakethi amathathu:
Ibhakethi loku-1 — I-As-cast ilungile. Imiphezulu engasebenziyo, iimpawu zokucoca, iiprofayili zezithambiso. Ukuchaza i-CT6 njenge-cast apha kwanele ngokupheleleyo. Machining ezi mpawu yinkunkuma emsulwa.
Ibhakethi 2 - Njengoko-iphoswe ngebhendi elawulwayo. Iimpawu ezidibana namalungu athambileyo, afumaneke ngokukhululekileyo, okanye aphathe amatywina angafuna ngcono kunomgangatho oqhelekileyo wokuphosa. Abaseki banokuqinisa ezi bhendi ngolawulo lwepateni ezinikeleyo, iisampulu esekwe kwigeyiji, kunye nokukhethwa komatshini wedatum preps - ngaphandle komatshini opheleleyo.
Ibhakethi yesi-3 — Kufuneka yenziwe ngoomatshini. Ukuthwala ibhore, i-H8/H7 iyalingana, imingxuma enemisonto, ubuso be-gasket, imigangatho yokunyuswa kwegiya. Akukho nkqubo yokuphosa izisa i-IT7 ngokuthe ngqo; ezi mpawu zifumana isibonelelo somatshini we-1.5-3 mm kwaye zigqitywe kwi-CNC.
Imizobo echaza ngengubo ±0.05 mm kuyo yonke indawo inyanzelisa isiseko ukuba sicaphule ukwenziwa ngokupheleleyo komphezulu ngamnye. Imizobo ebonakala ngebhakethi ngobukrelekrele igcina i-20-40% yomxholo womatshini. Xa sijonga imizobo e-Ningbo Ruican, lo msebenzi wokwenza ibhakethi lixabiso lokuqala esilongezayo - phambi kokuba kugalelwe nayiphi na intsimbi.
I-Flatness, UkuTsha, kunye nezinye iiFowuni zeJometri
Amabanga e-CT agubungela ukunyamezela ubungakanani, kodwa ukunyamezela kwejometri - ukuthamba, ukuthe tye, okukwindawo - kulandela eyabo ingqiqo. Ubume obuqhelekileyo be-as-cast kwi-150 mm ye-investment investment casting ijikeleze i-0.5-1.0 mm flatness. Ukuba ubuso bokutywina bufuna ukuvuleka kwe-0.05 mm, oko kukusebenza ngomatshini, ukumisa ngokupheleleyo. Ukunyamezelwa kwesikhundla kwiipateni zemingxuma etyhidiweyo kuxhomekeke ekubeni imingxuma iphoswe okanye igrunjwe: imingxuma etyhidiweyo ilandela ukuchaneka kwesixhobo (ngokumalunga ne-± 0.3-0.8 mm yendawo kwisayizi ephakathi), ngelixa iipateni ezigrunjiweyo zizuza ukuchaneka kwe-CNC (± 0.05 mm okanye ngaphezulu). Ukucacisa i-callouts ye-position eqinile kwimingxuma yokuphonswa yenye yezona zinto zixhaphakileyo - kwaye ziphepheka kakhulu - ukunyamezela kwi-specifications esiyibonayo.
Ulifunda njani iBango lokuNyamezelwa kweFoundry
Xa umthengisi esithi "sibambe i-CT5," buza imibuzo emithathu:
- Ngowuphi ubungakanani? I-CT5 kwi-25 mm ihluke kakhulu kwi-CT5 kwi-300 mm. Cela ibhendi yonyamezelo kwimilinganiselo yakho ebalulekileyo.
- Kweyiphi inkqubo? I-silica sol okanye iglasi yamanzi? Ixabiso lekowuti liyakuxelela, kodwa umzobo akufuneki uqikelele.
- Ngawaphi amandla edatha? I-Foundry elandelela iziphumo ze-dimensional kwi-CMM kwaye inokucaphula amaxabiso e-Cpk kwiimpawu ezibalulekileyo ngumboneleli owahlukileyo ukusuka komnye ocaphula iitafile zesakhono. Ngokhuseleko-olubalulekileyo okanye iinxalenye zemveliso ye-serial, cela isifundo sobuchule kumanqaku okuqala.
Uluhlu loNyamezelo oluSebenzayo lwe-RFQ yakho elandelayo
- Xela inqanaba le-CT elimiselweyo njenge-cast yenxalenye (i-CT5 okanye i-CT6 ye-silica sol iqhelekile), uze ubhale ngaphezulu apho kufuneka khona.
- Phawula iindawo ezinomatshini ngokucacileyo kwaye uchaze inkqubo yedatum - oomatshini bafuna iidatum eziphinda-phindayo ukuze basebenze kuzo.
- Gcina inani lemilinganiselo ebalulekileyo lincinci. Iimpawu ezilishumi ezibaluleke ngokwenene kunye ne-Cpk yokulandela umkhondo ibetha amashumi amane ngokukhululekileyo "ezibalulekileyo".
- Nika isiseko somsebenzi wenxalenye. Ukwazi ukuba isithukuthezi sithwala i-bushing kusenza sicebise indibaniselwano elungileyo yolawulo lokuphosa kunye nokudlula komatshini okukhanya.
- Buza inqaku lokuqala leengxelo zomgangatho kunye namaxabiso alinganisiweyo, hayi nje ukupasa/ukusilela.
Umgca ongezantsi
Ukwenziwa kotyalo-mali kuzisa ukuchaneka kwe-cast-cast okuphelisa uninzi lwe-machine - kodwa kuphela xa umzobo uvumela oko. Abathengi abaqondayo amabanga e-CT, bafaka iibhakethi iimpawu zabo phakathi kwe-cast kunye noomatshini, kwaye baxoxe ngeemfuno zokusebenza ngokuvulekileyo kunye ne-Foundry ngokuqhubekayo bafumana iindawo ezifanelekileyo, ngamaxabiso abetha zombini iindawo ezisebenza ngokupheleleyo kunye neenkqubo zokuphosa ezingachanekanga kangako.
E-Ningbo Ruican, senza i-silica sol kunye neglasi yotyalo-mali lweglasi yamanzi kunye nokugqitywa kwe-CNC yangaphakathi, kwaye sihlola yonke imizobo yokunyamezela ukunyamezela ngaphambi kokucaphula - inkonzo equkwa ne-RFQ yakho. Sithumelele inxalenye yakho yomzobo kwaye sikubonise ukuba zeziphi iimpawu esinokuzisa njenge-cast, kwaye yintoni ekusindisayo.
Ngaba ufuna uphononongo lonyamezelo kwindawo ekhoyo? Qhagamshelana neqela lethu lobunjineli nge-www.kstcasting.com.
