ʻO ka hapa nui o nā mea hoʻoponopono kuʻi kūʻē i nele i nā heluhelu no ka wili ʻana i kēia manawa a me ka ikaika.
He mea maʻalahi a maʻalahi hoʻi ka wiliwili wahi kūʻē a hiki i ka haki ʻana o ka weld, ma ia manawa e lawe koke ke kaʻina hana i kahi pae koʻikoʻi.
ʻAʻole like me ka arc welding, ka mea e hoʻopuka ai i kahi ala i maʻalahi ke nānā i ka nānā ʻana, nānā nā welds wahi maʻamau, akā hiki ke kaʻawale ma muli o ka nele o ka hui pono ʻana. Akā naʻe, ʻaʻole ia ka hewa o ke kaʻina. liʻiliʻi a hoʻonohonoho hewa paha no ka noi.
ʻOiai kūpono paha ka mīkini liʻiliʻi a māmā no kekahi mau noi, pono ʻoe e ʻike pono i ʻike ʻoe i kāu mea e loaʻa nei ma mua o ka hana ʻana i ke kālā.
Kū'ē wahi wili mea kū hoʻokahi no ka mea, he kiʻekiʻe-wikiwiki 'ano o ka hui metala me ka hoʻohui filler metala.When a kū'ē welder ua pono nui a hoonoho iho la ia, i ka localized noi o precisely hoomaluia wela i hanaia e ke ku e o ka metala i ka welding au. hoʻokumu i kahi hui paʻa paʻa - kapa ʻia ʻo ka nugget. ʻO ka ikaika hoʻopaʻa pololei ʻo ia hoʻi kahi ʻano nui e kōkua ai e hoʻoholo i ke kū'ē.
Ke hoʻohana pono ʻia, ʻo ka hoʻopaʻa ʻana wahi kūʻē ke ala wikiwiki loa, ikaika a maʻalahi loa o ka hoʻohui ʻana i nā ʻāpana metala.
ʻOiai he mea maʻalahi paha ke kaʻina hana, pono ʻoe e hoʻomaopopo i nā ʻano like ʻole a pehea e hoʻoponopono ai i kēlā me kēia no ka loaʻa ʻana o ka hopena i makemake ʻia - kahi hui paʻa i ʻoi aku ka ikaika ma mua o ka metala kumu.
ʻEkolu mau ʻano nui e pono ke hoʻonohonoho pololei ʻia kēia mau ʻano like ʻole FCT:
He mea maʻalahi a maʻalahi hoʻi ka wiliwili wahi kūʻē a hiki i ka haki ʻana o ka weld, ma ia manawa e lawe koke ke kaʻina hana i kahi pae koʻikoʻi.
ʻO ka hoʻomaopopo ʻole ʻana i ke koʻikoʻi o kēia mau mea hoʻololi a me ka pilina ma waena o lākou hiki ke hopena i nā welds nāwaliwali, maikaʻi ʻole. e like me arc welding, riveting, riveting and adhesives.
ʻO ke koho ʻana i ka welder wahi kūʻē kūpono a me ka mea hoʻoponopono hiki ke huikau i nā mea nona nā hale kūʻai no ka mea he nui nā hōʻailona a me nā pae kumukūʻai e koho ai.
ʻO nā mana uila i hoʻokomo ʻia ma luna o nā welders kūʻē i ka maʻamau o nā mana like ʻole a me nā koho pākahi. kaʻina hana kuʻi ʻana e like me nā hiʻohiʻona i kūkulu ʻia.
I kēia lā, kūʻai nui ʻia nā mea welder wahi i lawe ʻia ma ʻAmelika Hui Pū ʻIa, akā he liʻiliʻi wale nō e hālāwai me ka Heavy Duty Resistance Welding Manufacturing Alliance (RWMA) amperage a me nā kikoʻī hiki.
Hoʻohālikelike ʻia kekahi mau mīkini e pili ana i kā lākou kilovolt-ampere (KVA), a hiki i nā mea hana welder ke hoʻohana i nā helu wela e hoʻonui i ka hiki o kā lākou mīkini, hiki ke huikau i nā mea kūʻai.
Pono ka maʻamau o ka ʻoihana RWMA e hoʻolako i nā welders wahi me kahi transformer me ka helu 50% duty cycle. ʻO ke kaʻina hana e ana i ka pakeneka o ka manawa e hiki ai i kahi mea hoʻololi ke hoʻokele i kēia manawa me ka wela ʻole i hoʻokahi minuke o ka hoʻohui. ʻAʻole hana nā ʻāpana ma luna o ko lākou hiki ke wela. Akā naʻe, e huikau i ka poʻe kūʻai, helu kekahi mau mea hana mīkini i kā lākou transformers ma 10% wale nō, ʻoi aku ia ma mua o ka pālua o kā lākou papa inoa KVA helu.
Eia kekahi, ʻaʻole pili ka helu KVA i ka hiki ke hoʻoheheʻe maoli ʻia o kahi welder wahi. ka mea hoololi.
E like me ke kaomi wai, pono ke kiʻekiʻe o ke kaha lua o ka mea hoʻololi no ka hoʻokuke ʻana i ke au kuʻi lua ma waho o ka mea hoʻololi a ma o ka lima keleawe o ka mea wiliwili a me kahi electrode wiliwili (tip).
ʻO ka puka kiʻekiʻe o kahi mea hoʻololi hoʻololi wahi maʻamau he 6 a 8 V wale nō, inā makemake kāu noi kuʻi ʻana i kahi mīkini ʻāʻī hohonu me ka lima lōʻihi, pono paha ʻoe i kahi transformer me ka helu uila kiʻekiʻe kiʻekiʻe e lanakila ai i ka inductance o ka loop lua nui. .
Ke hoʻonohonoho pono ʻia ka nui a me ka hoʻonohonoho ʻana o ka welder pale, ʻo ka hoʻohana ʻana i ka wela i hoʻomalu pono ʻia i hana ʻia e ke kūpaʻa ʻana o ka metala i ke au hoʻoheheʻe e hana i kahi hui paʻa paʻa - i kapa ʻia he nugget.
Heʻoiaʻiʻo kēia inā makemake ka wahi wili i ka ʻāpana e hoʻouka hohonu i ka puʻu o ka mīkini. ʻO ke kila i loko o ka ʻāʻī e hoʻopau i ke kahua magnetic ma waena o nā lima a hao i ka mīkini o kahi mea hoʻonui wiliwili hoʻohana.
Hoʻokumu pinepine ʻia ka ikaika kuʻi ʻana e ka cylinder. No ka laʻana, ma ka mīkini lima swing, ʻokoʻa ka ikaika kuʻihao i loaʻa e like me ka ratio o ka lōʻihi o ka lima i ka mamao o ka cylinder a i ʻole ka mīkini koʻokoʻo wāwae mai ka fulcrum. , inā hoʻololiʻia ka lima pōkole e ka lima lōʻihi, e hoʻemi nuiʻia ka ikaika wiliwili i loaʻa.
Pono nā mīkini hana wāwae i ka mea hoʻohana e hoʻokuʻu i lalo i kahi wāwae wāwae mechanical e hoʻopau i nā electrodes.
Loaʻa i nā welds wahi papa A ka ikaika kiʻekiʻe a me ka hiʻohiʻona maikaʻi loa. Ua loaʻa kēia mau hopena i hoʻopaʻa ʻia ma ka hoʻonohonoho ʻana i ka mīkini e hana i ka amperage kiʻekiʻe kiʻekiʻe, nā manawa wili pōkole, a me ka ikaika kūpono.
Pono e hoʻomaopopo ʻia ʻo ka ikaika wili e pono ai i ka laulā kūpono. ʻO ka haʻahaʻa haʻahaʻa o ka hoʻonohonoho ikaika hiki ke hopena i ka metala flaking a hohonu dented, jagged-look welds wahi. ka ikaika weld a me ka ductility.Ke koho ʻana i ka Papa Hoʻonohonoho Welding Pono Pono nā papa kuhikuhi papa A, B a me C nā hoʻonohonoho mīkini no nā mānoanoa metala like ʻole i loko o nā puke kuhikuhi e like me ka RWMA's Resistance Welding Handbook, Revised 4th Edition. ʻAʻole hiki ke ʻae ʻia ma muli o ka ʻāpana wela nui (HAZ) ma muli o ka manawa wili lōʻihi.ʻO ke kila māmā he helu A wahi weld kikoʻī o 10,300 weld amps, 650 lbs. Weld ikaika a me 8 welding manawa pōʻaiapuni. (Hoʻokahi pōʻaiapuni mea wale 1/60th o kekona, no laila, ewalu pōʻaiapuni wikiwiki loa.) Class C weld papa kuhikuhi no ka ʻO ka hui kila like he 6,100 amps, 205 lbs.force, a hiki i ka 42 welding current cycles. This extended welding time of more than half a second can overheat the electrodes, hana i ka wela nui loa-pili wahi, a hope puhi i ka. wiliwili transformer. ʻO ka ikaika ʻāwīwī o kahi weld wahi ʻano C hoʻokahi i hoʻemi ʻia mai ka 1,820 lbs i hoʻohālikelike ʻia me kahi weld Type A. ʻoi aku ka maikaʻi o ka nānā ʻana. Eia kekahi, i loko o kahi kaiapuni laina hana, e ikaika mau ka Class A weld nugget a ʻoi aku ka lōʻihi o ke ola electrode. i kēia manawa a me ka ikaika. No laila, e hoʻoponopono pono i kēia mau mea koʻikoʻi nui, ʻoi aku ka maikaʻi o ke kūʻai ʻana i hoʻolaʻa hoʻolaʻa kūʻē kūʻē i ka ammeter a me ka dynamometer. ʻO ka Weld Control ka puʻuwai o ka Pūnaehana I kēlā me kēia manawa i hana ʻia kahi weld wahi, hilinaʻi kona ʻano a me kona kūlike weld control. ʻAʻole hiki i nā ʻenehana mana kahiko ke hana i ka manawa like a me nā waiwai wela no kēlā me kēia weld. ʻO ka hoʻomaikaʻi ʻana i kāu mau mana wili kuʻi ke ala ʻoi loa ka uku e lawe ai i kāu mau hana kuʻi kuʻi i kahi kūlana maikaʻi kūlike, kekahi ma hope o kekahi. E nānā i kēlā me kēia weld i ka manawa maoli. ʻO kekahi o kēia mau mana e ʻae iā ʻoe e hoʻonohonoho pololei i ka papa hana kuʻi ʻana i nā amps, ʻoiai ka hana o ka ea programmable e hoʻonohonoho i ka ikaika welding makemake. , e hōʻoia ana i nā welds like ʻole me nā hoʻololi ʻana i nā mea a me ka volta hale kūʻai. ʻO ka mea nui o ka wai hoʻoluʻu Spot welder nā mea pono e hoʻomaʻalili pono i ka wai e hōʻoia i ka maikaʻi weld a me ke ola electrode lōʻihi i ka wā o ka hana. ʻoi aku ka maikaʻi, e hāʻawi i ka wai kokoke i ka lumi wela. Hiki i kēia mau recirculators ke loaʻa ka hopena maikaʻi ʻole i ka huahana, no ka mea, hiki ke hoʻonui wikiwiki ʻia nā ʻōlelo aʻoaʻo wiliwili ma muli o nā mahana kiʻekiʻe a koi i nā ʻoki he nui a i ʻole nā mea pani i kēlā me kēia neʻe. i ka 65 degere Fahrenheit (a i ʻole ma luna o ka wahi hau mua e pale aku ai i ka condensation), ʻoi aku ka maikaʻi o ka hoʻopili ʻana i ka mīkini i kahi mea hoʻomaʻamaʻa wai anuanu / recirculator. ka helu o nā welds ma waena o nā electrode trims a i ʻole nā mea pani. Ua hōʻike nā haʻawina e hiki iā ʻoe ke hoʻokō i nā welds 8,000 ma ke kila māmā a i ʻole 3,000 welds ma ke kila galvanized me ka ʻole o ka ʻoki ʻana a i ʻole ka hoʻololi ʻana i nā electrodes. Pono ʻoe i ka ʻike hou aku? a mālama i kāu welder kū'ē. Makemake ʻoe e aʻo hou aku? He nui nā puke o ka American Welding Society (AWS) no ke kūʻai ʻana. hāʻawi i ka Certified Resistance Welding Technician palapala hōʻoia, i hāʻawi ʻia ma hope o ka hala ʻana i kahi hoʻokolokolo koho he 100 mau nīnau ma ka ʻike o ke kaʻina hana kuʻi.
Aia i loko o nā puke kuhikuhi nā papa kuhikuhi papa A, B, a me C no nā mānoanoa metala, e like me ka RWMA's Resistance Welding Handbook, Rev. 4th Edition.
ʻOiai ʻoi aku ka ikaika o nā welds Class C, ua manaʻo ʻia ʻaʻole hiki ke ʻae ʻia ma muli o ka ʻāpana wela nui (HAZ) ma muli o ka manawa wili lōʻihi.
No ka laʻana, ʻelua ʻāpana o ka 18-ga maʻemaʻe.ʻO ke kila māmā ka helu A wahi weld kikoʻī o 10,300 weld amp, 650 lbs. Ka ikaika welding a me 8 mau pōʻai manawa kuʻi.
ʻO ka papa hana kuʻihao papa C no ka hui kila like he 6,100 amps, 205 lbs.force, a hiki i ka 42 kuʻihao o kēia manawa. a hoopau loa i ka mea hoololi wiliwili.
ʻO ka ikaika ʻāwīwī o kahi weld wahi Type C hoʻokahi i hoʻemi ʻia mai ka 1,820 lbs i hoʻohālikelike ʻia i kahi weld Type A. .Ma waho aʻe, ma kahi laina laina hana, e paʻa mau ka papa weld nugget a ʻoi aku ka lōʻihi o ke ola electrode.
No ka hoʻohui ʻana i ka mea pohihihi, ʻo ka hapa nui o ka hoʻopaʻapaʻa kuʻi ʻana i nele i nā heluhelu no ka wiliwili ʻana i kēia manawa a me ka ikaika.
ʻO kēlā me kēia manawa i hana ʻia kahi weld wahi, hilinaʻi kona maikaʻi a me kona kūpaʻa i nā mana kuʻi kuʻi. e hōʻoia ʻaʻole i hoʻopuka kāu keʻena wiliwili i nā welds out-of-spec.
ʻO ka hōʻano hou ʻana i kāu mau mana wili kuʻi ke ala ʻoi aku ka maikaʻi o ka lawe ʻana i kāu mau hana wili kuʻi i kahi kūlana maikaʻi kūlike, kekahi ma hope o kekahi.
No nā hana kuʻihao hope loa, e noʻonoʻo e hoʻokomo i kahi mea hoʻoponopono wiliwili hou me ka ikaika i kūkulu ʻia a me ka ikaika electrode e nānā i kēlā me kēia weld i ka manawa maoli. Hoʻonohonoho i ka ikaika wili i makemake ʻia. Eia kekahi, ke hana nei kekahi o kēia mau mana hou i ke ʻano pani pani, e hōʻoia ana i nā welds like ʻole me nā loli o nā mea a me nā uila hale kūʻai.
Pono e hoʻomaʻalili maikaʻi ʻia nā ʻāpana welder i ka wai e hōʻoia i ka maikaʻi o ka welds a me ke ola electrode lōʻihi i ka wā o ka hana. huahua, no ka mea, hiki ke hoʻonui koke ʻia nā ʻōlelo aʻoaʻo wiliwili ma muli o nā wela kiʻekiʻe a koi i nā ʻoki a i ʻole nā mea pani i kēlā me kēia neʻe.
No ka mea, ʻo 55 a 65 degere Fahrenheit ka mahana o ka wai kūpono no ka welder kūʻē (a i ʻole ma luna o ka wahi hau mua e pale ai i ka condensation), ʻoi aku ka maikaʻi o ka hoʻopili ʻana i ka mīkini i kahi mea hoʻomaʻamaʻa wai anuanu. nā electrodes a me nā ʻāpana welder ʻē aʻe, e hoʻonui nui i ka helu o nā welds ma waena o nā ʻāpana electrode a i ʻole nā mea pani.
Ua hōʻike nā haʻawina e hiki iā ʻoe ke hoʻokō i nā welds 8,000 ma ke kila māmā a i ʻole 3,000 welds ma ke kila galvanized me ka ʻole o ka ʻoki a hoʻololi ʻana i nā electrodes.
He uku ia e hana pū me kahi mea kūʻai aku kūpono e kōkua iā ʻoe e koho a mālama i kāu welder kūpaʻa.
Makemake ʻoe e aʻo hou? He nui nā puke e pili ana i ka wili kuʻi kūʻē i hiki ke kūʻai aku i ka American Welding Society (AWS).
Hoʻohui hou, hāʻawi ʻo AWS i ka Certified Resistance Welding Technician palapala hōʻoia, i hāʻawi ʻia ma hope o ka hala ʻana i kahi hoʻokolohua 100-nīnau koho nui e pili ana i ka ʻike o ke kaʻina hana kuʻi.
ʻO WELDER, ʻo Practical Welding Today ma mua, hōʻike i nā poʻe maoli e hana nei i nā huahana a mākou e hoʻohana ai a hana pū me kēlā me kēia lā.
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Ka manawa hoʻouna: Jul-05-2022