Kushanda kweWhite Fused Alumina muInvestment Casting
1. Zvinhu zveKuisa Mari muShell
Alumina chena yakasanganiswainogadzirwa nekubatanidza alumina yemuindasitiri yemhando yepamusoro patembiricha iri pamusoro pe2000°C. Inopa kuchena kwakanyanya (α-Al₂O₃zviri mukati > 99–99.6%) uye kusimba kwakanyanya kwe2050°C–2100°C, ine chiyero chekuwedzera kwekupisa chakaderera (inenge 8)×10⁻⁶/°C). Hunhu uhwu hunoita kuti ive imwe nzira yakanaka pane jecha rezircon rechinyakare sechishandiso chikuru chekugadzira zvinhu. Kufanana kwayo kukuru kwezvikamu (kupararira kwehukuru hwezviyo > 95%) uye kupararira kwakanaka kunobatsira kugadzira mapundu akaomarara, akasimba, zvichivandudza zvakanyanya kupenya kwepasi pechigadzirwa uye kurongeka kwehukuru ukuwo zvichideredza mwero wekukuvara.
2. Kusimbisa Foroma
Nekuomarara kweMohs kwe9.0 uye kuchengetedza simba rayo pakupisa kwakanyanya (kuchengetedza hunhu hwayo pamusoro pe1900)°C),alumina chena yakasanganiswainowedzera hupenyu hwebasa remukuyu ne30–50%. Kana ikashandiswa muzviumbwa kana simbi dzakagadzirwa, simbi dzakagadzirwa, kana dzisiri dzesimbi, inodzivirira kuyerera kwesimbi uye inoderedza kuwanda kwekugadzirisa nekugadzirisa.
Mabhenefiti eWhite Fused Alumina
(1) Kugadzikana Kwekupisa Kwakanyanya
Alumina chena yakasanganiswainopa kugadzikana kwakanaka kwe thermochemical panguva yekushanda kwekukanda. Kuwanda kwayo kwekupisa kunosvika chikamu chimwe muzvitatu pane zvinhu zvemazuva ese, zvichibatsira kudzivirira kutsemuka kwevhu kana kushanduka kwekupisa nekuda kwekuchinja kwekupisa kamwe kamwe. Kushanduka kwayo kwegasi kushoma (kuburitswa kwegasi <3) ml/g) inoderedza maburi uye kusashanda zvakanaka kwemuboo.
(2) Hunhu Hwekupedzisa Pamusoro
Kana ikashandiswa sehupfu hwekupukuta hwakatsetseka (saizi yezviyo 0.5–45μm),alumina chena yakasanganiswainopa kukwenya kwakafanana, kwakaenzana kunogona kuita kuti pamusoro payo pave nekukasharara kweRa < 0.8μm. Hunhu hwayo hwekuzvirodza (kutyoka kwechinhu < 5%) kunoita kuti kucheka kwayo kurambe kuri kushanda zvakanaka uye kuti irambe ichikwesha zvakanaka.
(3) Kuchinjika Kwemaitiro
Tinopa saizi dzezviyo dzinogadziriswa dzinotangira paF12 kusvika kuF10000 kuti dzikwane maitiro akasiyana-siyana ekukanda:
Magiredhi akaomarara (F12)–F100): Kuburitsa chakuvhuvhu muzvivakwa zvakaoma, zvichiwedzera mwero wekubudirira kwekubvisa chakuvhuvhu neinopfuura 25%.
Magiredhi akanaka (F220)–F1000): Yekugadzira macores eceramic akanyatsogadzirwa ane magadzirirwo akasimba se±0.1 mm.
3. Kukosha Kwekugadzirisa Maitiro
(1) Kushanda Nemutengo Wakanaka
Kutsiva jecha rezircon nealumina chena yakasanganiswa inogona kuderedza mitengo yezvinhu ne30–40%. Zvinoitawo kuti ukobvu hweganda huderedzwe ne15.–20% (ukobvu hweganda: 0.8)–1.2 mm), zvichipfupisa kutenderera kwekuvaka magoko.
(2) Zvakanakira Zvakatipoteredza
Nehuwandu hwesimbi inorema yakaderera (< 0.01%), alumina chena yakasanganiswa inosangana nezvinodiwa zvekuchengetedzwa kwezvakatipoteredza zveISO 14001. Jecha remarara rinogona kudzokororwa 100% uye rinogona kushandiswazve mukugadzira zvinhu zvisingadiwi.
Mashandisirwo Akaratidza
Chinhu ichi chave chichishandiswa zvakanyanya mumabasa epamusoro-soro akadai semabhuradhi emuchadenga uye magadzirirwo emidziyo yekurapa. Mienzaniso yakajairika inoratidza kuti inogona kuwedzera mwero wekupasa kwechigadzirwa kubva pa85% kusvika pa97%.