Parahi
Kua whakamahia te parahi me te parahi i ngā rautau kua pahure, ā, i ēnei rā e whakamahia ana i roto i ētahi o ngā hangarau me ngā tono hou, engari kei te whakamahia tonutia mō ngā tono tuku iho pērā i ngā taonga puoro, ngā kamo parahi, ngā mea whakapaipai me ngā taputapu taputapu tatau me te taputapu taputapu.
He aha te mea i hangaia ai te parahi?
He koranu te parahi i hangaia mai i te huinga o te parahi me te konutea hei hanga rauemi me te whānuitanga o ngā whakamahinga hangarau. Mā te hanganga parahi ka puta he ira rewa e tika ana mō ngā mahi maha, tae atu ki te pai mō te hono mā te whakamahi i te tikanga whakapūmau. He iti iho te ira rewa o te parahi i te parahi i te 920~970 nekehanga Celsius i runga i te nui o te Zn i tāpirihia. He iti iho te ira rewa o te parahi i te parahi nā te Zn i tāpirihia. Ka rerekē te hanganga Zn o ngā koranu parahi mai i te 5% noa iho (e mōhiotia whānuitia ana ko ngā konganuku whakakoi) ki te neke atu i te 40% e whakamahia ana i roto i te mīhini parahi. Ko tētahi kupu kāore i te tino whakamahia ko te parahi parahi, e whakamahia ana ētahi tāpiritanga o te tine.
He aha te whakamahinga o te parahi?
Mā te hanganga parahi me te tāpiri o te konutea ki te parahi ka piki ake te kaha, ka puta he whānuitanga o ngā āhuatanga, ā, ka tino maha ngā rauemi e whakamahia ai ngā parahi. E whakamahia ana mō tōna kaha, tōna ātete ki te waikura, tōna āhua me tōna tae, me te ngāwari o te mahi me te hono. Ko ngā parahi ā-ira kotahi-wāhanga, kei roto tae atu ki te 37% Zn, he tino ngāwari ki te mahi matao, ki te whakarewa me te whakapūmau. Ko ngā parahi ā-ira rua-wāhanga he mahi wera te nuinga.
He nui atu i te kotahi te hanganga parahi?
He maha ngā parahi me ngā hanganga me ngā āhuatanga rerekē i whakaritea mō ngā tono motuhake e ai ki te taumata o te tāpiri konutea. Ko ngā taumata iti o te tāpiri Zn ka kiia he Guilding Metal, he Red Brass rānei. Ko ngā taumata teitei o te Zn ko ngā koranu pērā i te Cartridge Brass, te Free Machining Brass, te Naval Brass. Kei roto hoki i ēnei parahi o muri mai ētahi atu huānga. Kua whakamahia te tāpiri mata ki te parahi mō ngā tau maha hei āwhina i te ngāwari o te miihini o te rauemi mā te whakaoho i ngā wāhi pakaru maramara. I te kitenga o te mōrearea me ngā tūponotanga o te mata, kua whakakapia tata nei ki ngā huānga pērā i te silicon me te bismuth kia tutuki ai te āhuatanga miihini rite. E mōhiotia ana ēnei inaianei ko ngā parahi mata iti, ko ngā parahi kore mata rānei.
Ka taea te tāpiri atu i ētahi atu huānga?
Ae, ka taea hoki te tāpiri i ētahi atu huānga whakarewa iti ki te parahi me te parahi. Ko ngā tauira noa ko te mata mō te kaha mīhini e ai ki te kōrero i runga ake nei, engari ko te āheniki hoki mō te ātete ki te waikura ki te tango i te konutea, te tine mō te kaha me te waikura.
Tae Parahi
I te pikinga ake o te nui o te konutea, ka rerekē te tae. He rite tonu te tae o ngā koranu iti-Zn ki te parahi, engari ko ngā koranu nui-konutea he koura, he kōwhai rānei te āhua.
Te Hanganga Matū
AS2738.2 -1984 Ētahi atu whakaritenga tata rite
| Nama UNS | Nama AS | Ingoa Noa | Nama BSI | ISO No | Nama JIS | % Parahi | % Konutea | % Arataki | Ētahi atu % |
| C21000 | 210 | 95/5 Te Whakakikoruatanga o te Mea Whakarewa | - | CuZn5 | C2100 | 94.0-96.0 | ~ 5 | <0.03 | |
| C22000 | 220 | 90/10 Te Whakakikoruatanga o te Mea Whakarewa | CZ101 | CuZn10 | C2200 | 89.0-91.0 | ~ 10 | < 0.05 | |
| C23000 | 230 | 85/15 Te Whakakikorua i te Mea Whakarewa | CZ102 | CuZn15 | C2300 | 84.0-86.0 | ~ 15 | < 0.05 | |
| C24000 | 240 | 80/20 Te Whakakikoruatanga o te Mea Whakarewa | CZ103 | CuZn20 | C2400 | 78.5-81.5 | ~ 20 | < 0.05 | |
| C26130 | 259 | 70/30 Parahi Āhenikara | CZ126 | CuZn30As | ~C4430 | 69.0-71.0 | ~ 30 | < 0.07 | Āheniki 0.02-0.06 |
| C26000 | 260 | Parahi 70/30 | CZ106 | CuZn30 | C2600 | 68.5-71.5 | ~ 30 | < 0.05 | |
| C26800 | 268 | Parahi Kōwhai (65/35) | CZ107 | CuZn33 | C2680 | 64.0-68.5 | ~ 33 | < 0.15 | |
| C27000 | 270 | Waea Parahi 65/35 | CZ107 | CuZn35 | - | 63.0-68.5 | ~ 35 | < 0.10 | |
| C27200 | 272 | 63/37 Parahi Noa | CZ108 | CuZn37 | C2720 | 62.0-65.0 | ~ 37 | < 0.07 | |
| C35600 | 356 | Parahi Whakairo, 2% Mata | - | CuZn39Pb2 | C3560 | 59.0-64.5 | ~ 39 | 2.0-3.0 | |
| C37000 | 370 | Parahi Whakairo, 1% Mata | - | CuZn39Pb1 | ~C3710 | 59.0-62.0 | ~ 39 | 0.9-1.4 | |
| C38000 | 380 | Wāhanga Parahi | CZ121 | CuZn43Pb3 | - | 55.0-60.0 | ~ 43 | 1.5-3.0 | Konumohe 0.10-0.6 |
| C38500 | 385 | Parahi Tapahi Koreutu | CZ121 | CuZn39Pb3 | - | 56.0-60.0 | ~ 39 | 2.5-4.5 |
He maha ngā wā ka whakamahia ngā parahi mō ō rātou āhua
| Nama UNS | Ingoa Noa | Tae |
| C11000 | Parahi ETP | Māwhero Ngāwari |
| C21000 | 95/5 Te Whakakikoruatanga o te Mea Whakarewa | Parauri Whero |
| C22000 | 90/10 Te Whakakikoruatanga o te Mea Whakarewa | Koura Parahi |
| C23000 | 85/15 Te Whakakikorua i te Mea Whakarewa | Koura Parauri |
| C26000 | Parahi 70/30 | Koura Kakariki |
Te Whakakorikori i te Mea Whakarewa
Ko te C22000, 90/10 te whakarewa whakakoi, e whakakotahi ana i te tae koura momona me te huinga pai rawa atu o te kaha, te ngāwari me te ātete ki te waikura o ngā koranu Cu-Zn noa. Ka mau tonu ki te tae parahi momona. He tino pai te kaha ki te kukume hohonu, me te ātete ki te waikura pakaru i roto i te huarere kino me ngā taiao wai. E whakamahia ana i roto i ngā hanganga whare, ngā whakapaipai, ngā whakapaipai whakapaipai, ngā kakau tatau, ngā whakairo, me ngā taputapu moana.
Ngā parahi kōwhai
He tino pai te ngāwari me te kaha o te parahi C26000, 70/30 me te parahi C26130, he parahi āheni, ā, koinei ngā parahi e whakamahia whānuitia ana. He iti noa te āheni kei roto i te parahi āheni, e whakapai ake ana i te ātete waikura i roto i ngā wai, engari he rite tonu. He tae kōwhai kanapa motuhake ēnei koranu e honoa ana ki te parahi. Kei a rātou te huinga tino pai o te kaha me te ngāwari i roto i ngā koranu Cu-Zn, me te ātete waikura pai. Ka whakamahia te C26000 mō te hoahoanga, ngā ipu me ngā āhua kua toia me te miro, ngā pito hiko me ngā hononga, ngā kakau tatau, me ngā taputapu paramu. Ka whakamahia te C26130 mō ngā ngongo me ngā hononga e pā ana ki te wai, tae atu ki te wai inu.
Ko te C26800, te parahi kōwhai, te parahi ā-ira kotahi-wāhanga me te iti rawa o te parahi. Ka whakamahia i ngā wāhi e whai hua ai ōna āhuatanga kukume hōhonu me te iti o te utu. Ina whakarewaina, ka puta pea ngā matūriki o te wāhanga beta, ka whakaiti i te ngāwari me te ātete ki te waikura.
Parahi me ētahi atu huānga
Ko te C35600 me te C37000, he parahi alpha-beta 60/40 me ngā taumata mata rerekē kua tāpirihia hei whakaputa i ngā āhuatanga miihini kore utu. He whānuitia te whakamahinga mō ngā pereti me ngā papa whakairo, ngā taputapu hanga whare, me ngā taputapu. Kaua e whakamahia mō ngā mahi whakairo waikawa, engari me whakamahi ngā parahi alpha kotahi-wāhanga mō ēnei.
Ko te C38000, he parahi wāhanga, he parahi alpha/beta mata ka taea te whakaputa, he iti nei te tāpiri konumohe, ka puta he tae koura kanapa. Ka puta he āhuatanga tapahi kore utu mai i te mata. Kei te wātea te C38000 hei tokotoko, awaawa, papatahi me ngā koki kua whakaputa, e whakamahia whānuitia ana i roto i ngā taputapu hanga whare.
Ko te C38500, te tapahi parahi, he momo parahi 60/40 kua tino whakapaitia, he tino pai ngā āhuatanga tapahi kore utu. Ka whakamahia i roto i te hanga papatipu o ngā wāhanga parahi ina hiahiatia te putanga mōrahi me te roa o te ora o ngā taputapu, ā, kāore e hiahiatia he hanga matao anō i muri i te miihini.
Rārangi Hua Parahi
● Puka Hua
● Ngā hua papatahi kua hurihia
● Ngā rākau, ngā pae me ngā wāhanga kua whaohia
● Te hanga rakau me ngā hanga whakarewa
● Ngā ngongo kore hononga mō ngā whakawhiti wera
● Ngā ngongo kore hononga mō te hauhautanga me te pouaka whakamātao
● Ngā ngongo tui kore mō ngā mahi hangarau
● Waea mō ngā mahi hangarau
● Waea mō ngā mahi hiko
He maha ngā momo hua parahi a Jindalai Steel Group, arā, ngā rahi me ngā rahinga hei whakatutuki i ngā hiahia o tētahi kaupapa. Ka whakaaetia hoki e mātou ngā tauira, ngā rahi, ngā āhua, me ngā tae ritenga. Tukuna mai tāu patai, ā, ka koa mātou ki te kōrero ngaio ki a koe.
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Wā tuku: Hakihea-19-2022
