WHAKATAKI
He maha ngā momo irahiko e whakamahia ana i roto i te tukanga whakarewa pewa ārai (SMAW). Ko te whāinga o tēnei aratohu he āwhina i te tautuhi me te whiriwhiri i ēnei irahiko.
TE TAUTOKO IRIKO
Ka tautuhia ngā irahiko whakarewa pewa mā te whakamahi i te pūnaha tau AWS (American Welding Society), ā, he rahi kei waenganui i te 1/16 me te 5/16. Hei tauira, he tokotoko whakarewa e tohuhia ana he irahiko 1/8" E6011.
He 1/8" te whānui o te hiko.
Ko te "E" e tohu ana i te hiko whakarewa pewa.
Ko te mea e whai ake nei ko tētahi tau mati 4, mati 5 rānei kua tāia ki te hikohiko. Ko ngā tau tuatahi e rua o tētahi tau mati 4 me ngā mati 3 tuatahi o tētahi tau mati 5 e tohu ana i te kaha kume iti rawa (i roto i ngā mano pauna ia inihi tapawha) o te whakarewa ka puta mai i te tokotoko, ka whakaitihia te ahotea. Ko ngā tauira e whai ake nei:
Ko te kaha kume o E60xx he 60,000 psi. Ko te kaha kume o E110XX he 110,000 psi.
Ko te mati i muri i te mati whakamutunga e tohu ana i te tūranga ka taea te whakamahi i te hiko.
1.He mea whakamahi te EXX1X i ngā tūranga katoa
2. Hei whakamahi i ngā tūnga papatahi me ngā tūnga whakapae te EXX2X
3.Ko te EXX3X he mea mō te whakarewa papatahi
Ko ngā mati e rua whakamutunga e hono tahi ana, e tohu ana i te momo paninga o te hiko me te ia whakarewa ka taea te whakamahi i te hiko. Pērā i te DC tika, (DC -) DC whakamuri (DC+) AC rānei.
E kore ahau e whakaahua i te momo paninga o ngā momo irahiko, engari ka hoatu he tauira o te momo iahiko ka mahi tahi me ia irahiko.
NGĀ IRIHIRI ME NGĀ AU I WHAKAMAHIA
● He pai te hikohiko EXX10 DC+ (DC whakamuri, DCRP rānei).
● Irahiko tōraro EXX11 AC, DC rānei (DC tika, DCSP rānei).
● EXX12 AC, DC rānei-
● EXX13 AC, DC- DC+ rānei
● EXX14 AC, DC- DC+ rānei
● EXX15 DC+
● EXX16 AC, DC+ rānei
● EXX18 AC, DC- DC+ rānei
● EXX20 AC, DC- DC+ rānei
● EXX24 AC, DC- DC+ rānei
● EXX27 AC, DC- DC+ rānei
● EXX28 AC, DC+ rānei
NGĀ MOMO O NĀIANEI
Ka whakamahia te SMAW mā te whakamahi i te auhiko AC, DC rānei. Nā te mea ka rere te auhiko DC i te taha kotahi, ka taea te auhiko DC tika, (hiko kino) te DC whakahuri rānei (hiko pai). Mēnā ka whakahurihia te DC (DC+, DCRP rānei), ka hohonu te urunga o te whakarewa. DC tika (DC- DCSP rānei) ka tere ake te tere rewa me te putunga o te whakarewa. Ka waenga te urunga o te whakarewa.
Ka huri te polarity o te iahiko AC i a ia anō e 120 ngā wā i te hekona, ā, kāore e taea te huri pērā i te iahiko DC.
TE RAHI O TE IRIKORO ME NGĀ AMPS I WHAKAMAHIA
Hei aratohu taketake ēnei mō te whānuitanga o te amp ka taea te whakamahi mō ngā irahiko rerekē te rahi. Kia mōhio koe, ka rerekē pea ēnei whakatauranga i waenga i ngā kaihanga irahiko rerekē mō te tokotoko kotahi te rahi. Waihoki, ka pā pea te momo paninga i runga i te irahiko ki te whānuitanga o te amperage. Ki te taea, tirohia ngā mōhiohio a te kaihanga o te irahiko ka whakamahia e koe mō ā rātou tautuhinga amperage kua tūtohutia.
Ripanga Hiko
| DIAMETĀ IRIKOTI (MATATOTORU) | AWHINA AMP | PEREITI |
| 1/16" | 20 - 40 | KI TE 3/16" |
| 3/32" | 40 - 125 | KI TE 1/4" |
| 1/8 | 75 - 185 | NEKE ATU I TE 1/8" |
| 5/32" | 105 - 250 | NEKE ATU I TE 1/4" |
| 3/16" | 140 - 305 | NEKE ATU I TE 3/8" |
| 1/4" | 210 - 430 | NEKE ATU I TE 3/8" |
| 5/16" | 275 - 450 | NEKE ATU I TE 1/2" |
Kia mōhio! Ka matotoru ake te rauemi hei whakarewa, ka nui ake te iahiko e hiahiatia ana, ā, ka nui ake hoki te hiko e hiahiatia ana.
ĒTAHI MOMO IRIKO
Ka whakamāramahia e tēnei wāhanga ngā irahiko e whā e whakamahia whānuitia ana mō te tiaki me te whakatika i te whakarewa maitai ngawari. He maha atu anō ngā irahiko e wātea ana mō te whakarewa i ētahi atu momo konganuku. Tirohia me tō kaihoko taputapu whakarewa ā-rohe mō te irahiko e tika ana kia whakamahia mō te konganuku e hiahia ana koe ki te whakarewa.
E6010Ka whakamahia tēnei hikohiko mō ngā tūnga katoa o te whakarewa mā te whakamahi i te DCRP. Ka puta he whakarewa hohonu, ā, ka pai te mahi ki ngā konganuku paru, waikura, peita rānei.
E6011He rite tonu ngā āhuatanga o tēnei hikohiko ki tō te E6010, engari ka taea te whakamahi me ngā iahiko AC me DC.
E6013Ka taea te whakamahi i tēnei hikohiko me ngā iahiko AC me DC. Ka puta he hononga whakarewa waenga-ngāwari me te āhua pai o te hononga whakarewa.
E7018E mōhiotia ana tēnei hikohiko he hikohiko hauwai iti, ā, ka taea te whakamahi me te AC, te DC rānei. He iti te makuku o te paninga o te hikohiko e whakaiti ana i te whakaurunga o te hauwai ki roto i te whakarewa. Ka taea e te hikohiko te whakaputa whakarewa o te kounga hihi-X me te urunga waenga. (Kia mahara, me pupuri kia maroke tēnei hikohiko. Ki te mākū, me whakamaroke i roto i te oumu tokotoko i mua i te whakamahinga.)
Ko te tumanako ka āwhina ēnei mōhiotanga taketake i te kaimahi whakarewa hou, i te kaimahi whare rānei, ki te tautuhi i ngā momo irahiko me te whiriwhiri i te mea tika mō ā rātou kaupapa whakarewa.
Wā tuku: Hakihea-23-2022