Poʻo wili puʻupuʻu

Wahi a nā helu heheʻe like ʻole o ka solder, hiki ke hoʻokaʻawale ʻia ka brazing i ka soldering palupalu a me ka soldering paʻakikī.

Kuʻi ʻana

ʻO ka mea hoʻoheheʻe palupalu: ʻoi aku ka haʻahaʻa o ka mea hoʻoheheʻe o ka mea kūʻai aku ma mua o 450 ° C, a ʻoi aku ka haʻahaʻa o ka ikaika hui (ma lalo o 70 MPa).

Hoʻohana nui ʻia ka mea hoʻoheheʻe palupalu no ka hoʻopili ʻana i nā mea conductive, airtight a watertight i nā ʻoihana uila a me nā meaʻai.Hoʻohana pinepine ʻia ka hoʻoheheʻe ʻia ʻana o ka tin-lead me ka mea hoʻopiha metala.Pono ka solder palupalu e hoʻohana i ka flux e wehe i ke kiʻi oxide a hoʻomaikaʻi i ka pulu o ka solder.Nui nā ʻano o nā mea kūʻai aku, a hoʻohana pinepine ʻia ka waiʻona rosin no ke kūʻai ʻana i ka ʻoihana uila.ʻO ke koena o kēia flux ma hope o ke kuʻi ʻana ʻaʻohe hopena corrosive i ka mea hana, i kapa ʻia ʻo non-corrosive flux.ʻO ka flux i hoʻohana ʻia no ka wili keleawe, hao a me nā mea ʻē aʻe i haku ʻia me ka zinc chloride, ammonium chloride a me ka vaseline.I ka wā e wili ai i ka aluminika, ua hoʻohana ʻia ka fluoride a me ka fluoroborate e like me nā fluxes brazing, a hoʻohana pū ʻia ka waika hydrochloric a me ka zinc chloride e like me nā fluxes brazing.ʻO ke koena o kēia mau kahe ma hope o ke kuʻi ʻana he corrosive, i kapa ʻia ʻo corrosive fluxes, a pono e hoʻomaʻemaʻe ʻia ma hope o ka wili.

Hoʻopaʻa

ʻO Brazing: ʻoi aku ka kiʻekiʻe o ka mea hoʻoheheʻe o ka metala hoʻopiha piha ma mua o 450 ° C, a ʻoi aku ka ikaika o ka hui (ʻoi aku ma mua o 200 MPa).

Loaʻa ka ikaika kiʻekiʻe o nā hui brazed, a hiki i kekahi ke hana i ka wela kiʻekiʻe.Nui nā ʻano metala hoʻopihapiha hoʻopihapiha, a ʻo ka aluminika, ke kālā, ke keleawe, ka manganese a me ka nickel-based brazing filler metals ka mea i hoʻohana nui ʻia.Hoʻohana pinepine ʻia ka metala hoʻopiha kumu alumini no nā huahana alumini.Hoʻohana mau ʻia nā mea kūʻai kālā a me ke keleawe no ka hoʻopaʻa ʻana i nā ʻāpana keleawe a me ka hao.Hoʻohana nui ʻia nā mea kūʻai mai Manganese a me nickel e wili i ke kila kila, ke kila wela a me nā ʻāpana superalloy e hana ana i nā wela kiʻekiʻe.Hoʻohana maʻamau ʻia nā mea kūʻai aku e pili ana i ka Palladium, zirconium a me ka titanium no ka wili ʻana i nā metala refractory e like me beryllium, titanium, zirconium, graphite a me nā seramika.Ke koho ʻana i ka metala hoʻopihapiha, pono e noʻonoʻo ʻia nā ʻano o ka metala kumu a me nā koi no ka hana hui.Hoʻokumu pinepine ʻia ka brazing flux me nā chlorides a me nā fluorides o nā metala alkali a me nā metala kaumaha, a i ʻole borax, boric acid, fluoroborate, a me nā mea ʻē aʻe, hiki ke hana ʻia i pauka, paʻi a me ka wai.Hoʻohui pū ʻia ka lithium, boron a me ka phosphorus i kekahi mau mea kūʻai aku e hoʻomaikaʻi i ko lākou hiki ke wehe i ke kiʻi oxide a me ka pulu.E hoʻomaʻemaʻe i ke koena flux ma hope o ka wili ʻana me ka wai mahana, ka waikawa citric a i ʻole ka waikawa oxalic.

'Ōlelo Aʻo: Pono e maʻemaʻe ka ʻili pili o ka metala kumu, no laila e hoʻohana ʻia ka flux.ʻO ka hana o ka brazing flux ka wehe ʻana i nā oxides a me ka ʻaila haumia ma luna o ka ʻili o ka metala kumu a me ka metala hoʻopihapiha, pale i ka ʻili pili ma waena o ka metala hoʻopihapiha a me ka metala kumu mai ka oxidation, a hoʻonui i ka wettability a me ka fluidity capillary o ka metala filler.ʻO ka helu hoʻoheheʻe o ka flux e emi iho ia ma mua o ka mea kūʻai aku, a ʻo ka ʻino ʻana o ke koena flux ma luna o ka metala kumu a me ka hui ʻana e emi iho.ʻO ka flux maʻamau i hoʻohana ʻia no ka hoʻoheheʻe palupalu ʻana he rosin a i ʻole zinc chloride solution, a ʻo ka flux maʻamau no ka brazing ka hui ʻana o ka borax, boric acid a me ka alkaline fluoride.

Ka noi a me ka hoʻoponopono a me ka hoʻolaha

ʻAʻole kūpono ʻo Brazing no ka wili ʻana o nā hale kila maʻamau a me nā ʻāpana ukana kaumaha a ikaika.Hoʻohana nui ʻia ia no ka hana ʻana i nā mea hana pololei, nā ʻāpana uila, nā ʻāpana metala ʻokoʻa a me nā ʻāpana ʻāpana lahilahi, e like me nā ʻāpana sandwich, nā hale honeycomb, etc.I ka wā o ka brazing, ma hope o ka hoʻomaʻemaʻe ʻia ʻana o ka ʻili pili o ka mea hana i hoʻopaʻa ʻia, ua ʻākoakoa ʻia ma ke ʻano he overlap, a hoʻokomo ʻia ka metala hoʻopiha kokoke i ka ʻāpana hui a i ʻole i loko o ka ʻāpana hui.Ke hoʻomehanaʻia ka mea hana a me ka solder i kahi mahana iʻoi aʻe ka kiʻekiʻe ma mua o ka wela hoʻoheheʻe o ka mea hoʻoheheʻe, e hoʻoheheʻe ka solder a hoʻonā i ka ili o ka weldment.E kahe ana ka metala hoʻopiha wai a pāhola ma ke kaʻina me ke kōkua o ka hana capillary.No laila, ua hoʻoheheʻe ʻia ka metala brazed a me ka mea hoʻopiha piha a hoʻokomo ʻia i loko o kekahi i kekahi e hana i kahi ʻāpana alloy.Ma hope o ka condensation, hoʻokumu ʻia ka hui brazed.

Ua hoʻohana nui ʻia ʻo Brazing i ka mechanical, uila, instrumentation, radio a me nā keʻena ʻē aʻe.ʻO nā mea hana karbida, nā ʻāpana wili, nā papa kaʻa, nā mea hoʻololi wela, nā ʻaukā a me nā ipu like ʻole;I ka hana ʻana i nā alakaʻi nalu microwave, nā paipu uila a me nā mea uila uila, ʻo brazing ʻo ia wale nō ke ala pili hiki.

Nā hiʻohiʻona o ka brazing:

huila wili daimana brazed

huila wili daimana brazed

(1) He haʻahaʻa ka mahana wela wela, ʻoluʻolu a pālahalaha ka hui ʻana, liʻiliʻi ka loli o ka microstructure a me nā waiwai mechanical, liʻiliʻi ka deformation, a pololei ka nui o ka mea hana.

(2) Hiki iā ia ke weld i nā metala like ʻole a me nā mea me ka ʻole o ke kau palena ʻole i ka ʻokoʻa mānoanoa o ka mea hana.

(3) Hiki i kekahi mau hana brazing ke weld i nā weld a me nā hui i ka manawa like, me ka huahana kiʻekiʻe.

(4) He maʻalahi nā mea hana brazing a haʻahaʻa ka hoʻopukapuka hana.

(5) He haʻahaʻa ka ikaika hui, ʻilihune ka pale wela, a ʻo nā koi no ka hoʻomaʻemaʻe ma mua o ka wili ʻana he koʻikoʻi, a he kumukūʻai ke kumukūʻai o ka solder.