Te Tukanga Hanga Paura Iti o te Kōrunuma Parauri me te Mana Kounga
Haere atu ki roto i tētahi wheketere tukatuka taputapu, ka kī te hau i te kakara motuhake o te puehu whakarewa, me te haruru nui o ngā mīhini huri. Kua pania ngā ringa o ngā kaimahi ki te hinu mangu, engari ko te paura parauri kanapa kei mua i a rātou—paura moroiti kōrunuma parauri—ko te "niho" tino nui me te "mata koi" o te ahumahi hou. Ko tēnei rauemi mārō, e mōhiotia whānuitia ana ko te "corundum" e ngā kaimahi o roto o te ahumahi, ka hurihia mai i te konganuku ki te paura pai, he whakamātautau mō te pāmahana teitei me te tika.
1. Ngā Mura Mano-Ngā Tohu: Te Tukanga Hanga o te Paura Maikoro Parauri
Paura moroiti kōrunuma parauriKa tīmata hei puranga paru iti. Kaua e whakaititia ēnei puranga oneone; me waiho hei konganuku kounga teitei me te ihirangi Al₂O₃ o te 85% neke atu rānei kia tika ai mō te whakarewa. Ina tuwhera te oumu whakarewa, he tirohanga tino whakamiharo - ka piki te pāmahana i roto i te oumu pewa hiko, ka eke ki runga ake i te 2250°C. Ka taka te paru, ka rewa i roto i ngā mura kaha, ka purea me te tango i ngā paru, ā, ka mutu ka hanga he poraka korundum parauri matotoru. He mea motuhake anō hoki te kōwhiringa o te momo oumu: he pai te rere me te parakore o te oumu whakatītaha, he pai mō ngā hua pai; he nui te putanga me te iti o te utu o te oumu pumau. He maha ngā wā ka whiriwhiri ngā kaihanga i runga i te tono.
Korunuma parauriHe "paura taratara" tonu ngā poraka hou mai i te oumu, ehara i te paura pai. Muri iho, ka tangohia e te mīhini kuru: he mīhini kuru porotaka niho-rua hei kuru taratara, hei wawahi i te puranga, ko te mīhini kuru pānga poutū ka kuru pai, hei wawahi i ngā matūriki ki ngā kongakonga rite ki te mirimita te rahi. Engari ehara i te mea koinā anake—he mea nui te wehenga aukume me te tango rino mō te kounga. Ina whakakāhia, ka taea e te wehewehe aukume teitei te tango katoa i ngā kongakonga rino e toe ana mai i te rauemi. Ka taea e ngā wehewehe aukume kaha-teitei e whakamahia ana e ngā kamupene pēnei i a Henan Ruishi te whakaiti i te Fe₂O₃ ki raro iho i te 0.15%, hei whakatakoto i te turanga mō te whakapūkara i muri mai.
Kei roto hoki i te tāke whakapūkara ngā mea ngaro. Ka whakamahia he otinga waikawa hauwaiora 15%-25% mō ngā haora 2-4. Ka honoa ki te "pūrere horoi pana-tō" a Zhenyu Grinding, ka rūrūtia te paura, ka horoia, ka whakarewahia ngā poke pērā i te silicon me te konupūmā, ka whakarei ake i te parakore o te paura pai. He rite te taahiraa tātari whakamutunga ki te "huka": ka whakaratohia e ngā mata wiri te tātari tonu, ka wehe i ngā matūriki pai mai i te matotoru ki te matotoru. Kei roto i te pūrere tātari patent a Chongqing Saite Corundum ētahi paparanga mata e toru me te mata haurua-wāhanga, e whakarite ana i te tohatoha rahi matūriki kia tino tika me te mea e inehia ana ki te rūrū. Kātahi ka tohua te paura pai kua tātarihia kia rite ki te hiahia—ko te 200#-0 me te 325#-0 ngā whakaritenga noa. He rite tonu te ōrite o ia matūriki ki te onepu, he angitu tūturu.
2. Tirotiro Ataahua: Te Ara Matua o te Kounga Paura Iti
Kei hea te whakamahinga o te paura iti o te korundum parauri? Mai i te whakakanapa i te karāhe waea pūkoro ki te whakakī i ngā oumu whakarewa maitai, ahakoa te iti o te hekenga o te mahi ka taea te riri o ngā kaihoko. Nō reira, ko te whakahaere kounga te pūtake tonu o te āwangawanga i roto i te wheketere. Tuatahi, whakaarohia te hanganga matū—me ≥95% te ihirangi Al₂O₃ (me ≥97%) ngā hua papai, me ≤3.5% te TiO₂, ā, me pupuri te SiO₂ me te Fe₂O₃ i roto i te 1% me te 0.2% ia. Ka aroturukihia e ngā tohunga taiwhanga te ine ine i ia rā; ahakoa te iti o te piki me te heke o ngā raraunga ka taea te mahi anō i te puranga katoa.
He tino pakari anō hoki te whakamātautau i ngā āhuatanga ā-tinana:
Me eke te pakeke o te Mohs ki te 9.0. Ka rakurakuhia te tauira ki tētahi pereti tohutoro; ki te kitea he tohu ngohengohe, ka kiia he hapa.
Ko te mātotoru tūturu e herea ana ki te 3.85-3.9 g/cm³. Ko ngā rerekētanga e tohu ana i tētahi raruraru ki te hanganga tioata.
He uaua ake te whakamātautau i ngā matū ātete ahi—ka pakaru, ka paura rānei i muri i te maka ki roto i te oumu 1900°C mō ngā haora e rua? Kua para katoa te puranga!
He mea nui te ōritetanga o te rahi o te matūriki ki te whakakanapa i ngā hua. Ka horahia e te kaitirotiro kounga tētahi pūnetēpu paura ki raro i tētahi tātari rahi matūriki taiaho. Ko te rerekētanga o te uara D50 neke atu i te 1% ka kiia he hapa. Nā te mea, ko te rahi matūriki kāore i te ōrite ka hua ake he karawarawa, he wāhi rānei i runga i te mata whakarewa kua whakakanapahia, ka puta ai ngā amuamu mai i ngā kiritaki.
Kua noho te paerewa ā-motu GB/T 2478-2022, i whakahoutia i te tau 2022, hei mea pakari mō te umanga. E whakahaere ana tēnei tuhinga hangarau matotoru i ngā mea katoa mai i te hanganga matū me te hanganga tioata ki te tākai me te rokiroki okōrunuma parauriHei tauira, e hiahiatia ana kia whakaatu te α-Al₂O₃ i te āhua karaihe tapatoru paerewa. Kitea te tioata rerekē i raro i te karuārai? Aroha mai, ka puritia te hua! Me rēhita e ngā kaihanga ngā taumata pāmahana me te haumākū o te whare putunga—i te wehi kei mākū ngā paura iti, ka piri tahi, ka kino ai tō rātou ingoa pai.
3. Te Huri i te Para hei Taonga: Ka Pakaru te Hangarau Hangarua i te Raru o ngā Rauemi
Kua roa te umanga korundum e mamae ana i te kohikohinga o ngā para o ngā mea whakakoi me ngā wira huri, e kore e noho noa i te wāhi engari ka poke hoki i te taiao. Heoi, i roto i ngā tau e rua kua pahure ake nei, kua puta ake te hangarau "korundum hangarua", e hoatu ana ki ngā rauemi para he oranga hou. Kua neke ake te mahi hangarua e tētahi patent hou i Yingkou, Porowini o Liaoning: tuatahi, ka "kaukau" ngā hua korundum para hei tango i ngā poke, ā, muri iho ka kuru me te wehe aukume, ā, i te mutunga, ka kohuatia hohonu ki te waikawa hauwai. Ka whakanuia e tēnei tukanga te tango poke mā te 40%, ka tata te mahi a te rauemi hangarua ki tērā o te paura moroiti parakore.
Kei te whānui haere hoki te whakamahinga o ngā rauemi hangarua. He pai ki ngā wheketere ātete wera te whakamahi mō te uku taphole—me whakaranu tonu ki ngā mea whakarewa, ā, he tino whai hua te rauemi hangarua. Heoi anō, ka whakaitihia e te tukanga hangaruakōrunuma paraurika piki ake te utu mā te 15%-20%, ā, ka tino harikoa ngā rangatira. Heoi anō, e whakatūpato ana ngā tohunga o te umanga: "Ko te whakakanapa tika me whakamahi i ngā rauemi kounga tuatahi. Mēnā ka konatunatua he iti noa te paru ki roto i ngā rauemi hangarua, ka tere tonu te pakaru o te mata whakaata!"
4. Whakamutunga: Ahakoa te iti o te paura iti, ka taea e ia te pikau i te taumaha o te ahumahi
Mai i te mura o ngā oumu hiko ki te haruru o ngā wehewehe aukume, mai i te hurihanga o ngā tāke piki ki ngā raina matawai o ngā tātari rahi matūriki taiaho—ko te whānautanga o te paura iti korundum parauri he mea whakamiharo o te ahumahi hou. Ko ngā patent hou, ngā paerewa ā-motu hou, me ngā hangarau hangarua kei te piki haere tonu te tuanui o te ahumahi. Ko te tono a ngā ahumahi o raro mō te tino tika o te maimoatanga mata kei te piki haere tonu te kounga o te paura iti. I runga i te raina huihuinga, ka hiritia ngā putea paura parauri ka utaina ki runga i ngā taraka, ka haere ki ngā wheketere puta noa i te motu. Ahakoa kāore i te rongonui, engari kei te tautoko i te kaha matua o Made in China, i raro i te mata o tōna oro papatahi.