China tsika aluminium alloy castings bykukanda jechauye shell mold casting process.
Izwi rekuti Green Sand rinoreva kuvepo kwehunyoro mujecha rekuumbwa uye rinoratidza kuti mold haina kubikwa kana kuomeswa. Jecha mbishi rinocherwa rozogadziriswa kuti ripe kugovaniswa kwakafanana kwekukura kwezviyo. Kana yagadzirwa kuti iumbe, ivhu remuvhu rinowedzerwa kuti ribatanidze tsanga pamwechete.
Guruva remarasha (rinozivikanwa seSea Coal) rinowedzerwa kudzora kunaka kwekukanda panguva yekuwedzera kwejecha apo simbi inopisa inodururwa muforoma. Zvimwe zvinowedzera, senge pitch, cellulose uye silica hupfu, zvinoshandiswa zvakare. Iyo yekuwedzera inoshandiswa zvinoenderana nesimbi yakakandwa. Jecha rinosanganiswa mu mullor kana musanganisi, apo mvura uye zvinowedzera zvinosanganiswa nejecha.
Jecha rinobva ragadzirira kushandiswa kugadzira mold. Pane nzira dzakati wandei dzekuumba asi nzira dzese dzinosvina kana kumonyanisa jecha patani kuita ratidziro yechikamu chichakandwa. Iwo mapatani anopatsanurwa kubva kumahafu e mold kana mold cake uye mold inobva yavharwa ichigadzira chikamu mhango. Mhando dzekuumba dzinosiyana kubva kune otomatiki yakakwira-kumhanya-kumhanya kuumba, otomatiki match plate molding, automatic tight flask molding (inoshandiswa kuforoma hombe) uye jolt kusvina kuumba. Zviumbwa zvakakura zvinogadzirwawo pasi uye zvakaputirwa nemaoko. Nhasi, kuumba kunonyanya kuitwa otomatiki uye mold inoiswa pamichina yekubata mold kuti idirwe, kubvumira makanda kusimba uye kutonhora. Mold inobata midziyo yekugadzirisa inosanganisira indexing mitsara, looping mitsetse uye mold mota mitsetse. Kudururira simbi kunogona kuitwa otomatiki nechoto chekudururira kana kutakurwa kune mold mumaladhi. Ladle masimba anogona kubva muhukuru kubva pa100 mapaundi kusvika kune akati wandei matani.
Mushure mekunge simbi iri muforoma yaoma uye yatonhorerwa, mold yacho inokandwa pane shakeout inoparadzanisa zvinoumbwa nejecha. Iyo shakeout process inogona kuitwa neyakasiyana siyana yemidziyo. Iko kukanda kunobva kwaderedzwa (kuparadzaniswa kubva kune mumhanyi system). Runner system inoshandiswa kuwana simbi mugomba rekukanda. Iyo inomhanya sisitimu inodzoserwa kudhipatimendi rekunyungudika kuti ishandiswe zvakare uye ma castings anotumirwa kumagumo ekupedzisa. Jecha rinoshandiswazve mushure mekunge ravhenekwa nekutonhodzwa. Jecha idzva rinowedzerwawo zvichienderana nereshiyo yehuwandu hwesimbi yakadirwa muhuwandu hwakapihwa hwejecha.
Kukandira kupedzisa kazhinji kunotanga nekuputika kwepfuti kubvisa jecha rakanamira pakukandwa. Nzvimbo yekupedzisa inogona kuve yakanyanya otomatiki, uchishandisa marobhoti uye Vision masisitimu, kana inogona kunge iri nyore inofambiswa nemaoko system. Mhando dzemazuva ese dzekupedza basa dzinosanganisira kugaya mavhiri, kugaya bhandi, trim press cutting, saw cutting, air arch cutting uye kugaya maoko. Nzira inoshandiswa inoenderana nesimbi yakakandwa uye saizi yekukanda.
Aluminium nema alloys ayo anogona kukandwa uye kudirwa nehigh pressure die casting, low pressure die casting, gravity casting, jecha kukanda, investment cast uye.kurasika furo. Kazhinji, iyo aluminium alloy castings ine huremu hushoma asi yakaoma kuumbwa uye nani pamusoro.
Iyo Aluminium Alloy Isu yatinokanda nejecha Kukandira Maitiro:
• Cast Aluminium Alloy neChina Standard: ZL101, ZL102, ZL104
• Cast Aluminium Alloy neUSA Stardard: ASTM A356, ASTM A413, ASTM A360
• Cast Aluminium Alloy nemamwe maStarndards: AC3A, AC4A, AC4C, G-AlSi7Mg, G-Al12
| Yakabatana | Aluminium association | Kuoma BHN | Ultimate tensile simba, MPa | Goho Simba, MPa | Modulus ye elasticity, GPa | Kuneta Simba, MPa |
| A03550 | AA355.0 | 75-105 | 255 | 185 | 70.3 | 69.0 |
| A03600 | AA360.0 | 75.0 | 300 | 170 | 71.0 | 138.0 |
| A03800 | AA380.0 | 80.0 | 317 | 159 | 71.0 | 138.0 |
| A03830 | AA383.0 | 75.0 | 310 | 152 | / | 145.0 |
| A03840 | AA384.0 | 85.0 | 331 | 165 | / | 140.0 |
| A03900 | AA390.0 | 120.0 | 280 | 240 | 81.2 | 140.0 |
| A04130 | AA413.0 | 80.0 | 296 | 145 | 71.0 | 130.0 |
| A04430 | AA443.0 | 30-60 | 145 | 48.3 | 71.0 | / |
| A05180 | AA518.0 | 80.0 | 310 | 193 | 69.0 | 160.0 |
Aluminium Alloy Castings Maitiro:
• Kuita kwekukanda kwakafanana nekwesimbi, asi hukama hwemagetsi hunodzikira zvakanyanya sezvo ukobvu hwemadziro hunowedzera.
• Ukobvu hwemadziro ekukanda hahufanire kunge hwakanyanya kukura, uye zvimwe zvimiro zvakafanana neaya esimbi castings.
• Uremu hwakareruka asi chimiro chakaoma
• Mari yekukanda pakg yealuminium castings yakakwirira kudarika yesimbi nesimbi.
• Kana ikagadzirwa nedie casting process, mold uye pateni mutengo waizove wakakwira zvakanyanya kupfuura mamwe maitiro ekukanda. Naizvozvo, kufa casting aluminum castings kungave kwakakodzera kukanda kwehuwandu hunoda huwandu.
| Typical Chemical Composition ye Investment Casting Aluminium Alloy neNorth American Specifications | ||||||||||||||
| Alloy Grade | Tsanangudzo | Al | Cu | Si | Zn | Mg | Cr | Fe | Mn | Ti | Ag | Be | Ni | P |
| A356-T6 | AMS 4218 | Bal | 0.20 | 6. 5 - 7. 5 | 0.10 | 0.25-0.45 | - | 0.20 | 0.10 | 0.20 | - | -- | - | - |
| A 357 | AMS 4219 | Bal | 0.20 | 6. 5 - 7. 5 | 0.10 | 0.40-.70 | - | 0.20 | 0.10 | 0.04-0.20 | - | 0.04-0.07 | - | - |
| F 357 | AMS 4289 | Bal | 0.20 | 6.5-7.5 | 0.10 | 0.40-.70 | - | 0.10 | 0.10 | 0.04-0.20 | - | 0.002 | - | - |
| E 357 | AMS 4288 | Bal | - | 6.5-7.5 | 0.10 | 0.55-0.60 | - | 0.10 | 0.10 | 0.10-0.20 | - | 0.002 | - | - |
| A201 | AMS 4229 | Bal | 4.0-5.0 | 0.05 | - | 0.15-0.35 | - | 0.10 | 0.20-0.34 | 0.15-0.35 | 0.40-1.0 | - | - | - |
| C355 | AMS 4215 | Bal | 1.0-1.5 | 4.5-5.5 | 0.10 | 0.40-0.60 | - | 0.20 | 0.10max | 0.20 | - | - | - | - |
| A206 | AMS 4235 | Bal | 4.2-5.0 | .05max | 0.05max | 0.20-0.35 | - | 0.10ma | 0.20-0.50 | 0.15-0.30 | - | - | 0.5max | - |
| B206 | Bal | 4.2-5.0 | .05max | 0.05max | 0.15-0.35 | - | 0.10max | 0.20-0.50 | 0 10 | - | - | 0.5max | - | |
