Ngongo Parahi Tini Arataki Nui C93200 – Koranu Āhua Whero
Ataata
Pae Parahi Tin Rahi-Nui (Φ120mm me runga ake) – Tāpiritanga Hangarau
He tohunga mātou ki te hanga i ngā pae parahi tine nui te whānui, mai i te Φ120mm ki te Φ650mm. Ko ngā momo matua ko te C51900, C52100, C51000, CuSn6, CuSn8, ZCuSn5Pb5Zn5, ZCuSn10Zn2, me ētahi atu. Ka taea te tuku rauemi ki te GB/T 13808, ASTM B505, JIS H3270, EN 1982, ki te whakarite rānei i te matū me ngā āhuatanga kia rite ki ngā hiahia o te kiritaki.
Tukanga Hanga Matua
● Mā te whakarewanga haurua-tonu, ā, muri iho ko te whakaputanga waipēhi taumaha (te taumaha o te pae kotahi 3–8 tana) ka tino matotoru te hanganga, kāore he pūngao e mimiti ana i ngā diameter nui.
● Mā te mahi wera/mātao maha-haerenga me te whakamahana takawaenga e whakahaeretia ana, ka whakakorehia te hanganga dendritic, ka hua ake he matrix eutectoid α+(α+δ) ōrite me te rahi o te kōhatu 0.025–0.050 mm.
● He hononga kore te pae katoa, ā, kāore he hononga puta noa i tōna roanga.
Ngā Kaupapa Matua o te Mana Kounga
● Te hanganga matū: Te tātari ine-pānui tika (SPECTRO) i mahia ki runga i ia wera; ko ngā huānga iti katoa (P, Fe, Sb, Bi, me ētahi atu) ka whakahaeretia ki te 50% o ngā rohe paerewa, ki te kaha ake rānei.
● Ngā āhuatanga miihini: Ngā uara noa mō ngā pae Φ≥200mm: Te kaha kume ≥450 MPa, te kaha hua 0.2% ≥200 MPa, te roa ≥15%, te pakeke HB120–180 (kua tino whakamanahia).
● Te pakari o roto: Whakamātautau ultrasonic 100% i runga i te taumata ASTM B594 Akomanga A, SEP 1921 rānei E/e mā te whakamahi i ngā pūwero 6–10 MHz. Kei te wātea ngā pūrongo UT katoa me ngā whakaahua hanganga nui/iti mō ia pae ina tonoa.
● Ngā ātete ā-ahu: Te ātete whānui ±0.5 ki te ±1.5 mm (pai ake i te H11), te tika ≤1 mm/m, te ātete roa-tapahi ±20 mm.
● Whakaotinga mata: He tika te hurihanga i muri i te whakaputanga, he taratara te mata Ra ≤3.2 μm, kāore he kapiti, he whakaurunga, he hapa kiri karaka rānei.
Ngā Tohutoro Tuku
● Ngā poroporo moana nui (3–5 tana ngā pae CuSn10Zn2 takitahi)
● Ngā hononga pakaru ara iahiko ngaohiko-tiketike (CuSn6/CuSn8)
● Ngā pūnaha paipa wai moana (C51900 diameter nui)
● Parahi tine-fosfor kaha-teitei mō ngā mahi kawe tereina me te mana hau
Te wā arahi: 30–45 ngā rā mō ngā taonga paerewa, 20 ngā rā pea mō ngā ota tere mā te whakaritenga motuhake. E mihi ana ki ngā tukanga wheketere me ngā arotake kounga.
