ʻO ka welding stainless steel pono ke koho ʻana i ke kinoea pale e mālama i kona haku mele a me nā waiwai pili kino a me nā mechanical.
Ma muli o ka maikaʻi ʻole o ka thermal conductivity o ke kila kila a me ke ʻano "anu" o ka hoʻololi ʻana i ke kinoea metala arc welding (GMAW), pono ke kaʻina i kahi "tri-mix" kinoea i loaʻa iā 85% a 90% helium (He), a hiki i 10 % Argon (Ar) a me 2% a 5% Carbon Dioxide (CO2). 2.The kiʻekiʻe ionization hiki o ka helium paipai arcing ma hope o ka pōkole kaapuni;hui pū me kona kiʻekiʻe thermal conductivity, ka hoʻohana o He hoʻonui i ka wai o ka wai hehee. ʻO ka māhele Ar o Trimix e hāʻawi i ka pale maʻamau o ka puddle weld, aʻo CO2 ke hana ma ke ʻano he mea hoʻololi e hoʻopaʻa i ke arc (e nānā i ke kiʻi 2 no ke ʻano o nā kinoea pale ʻokoʻa e pili ana i ka weld bead profile).
Hiki i kekahi mau huila ternary ke hoʻohana i ka oxygen ma ke ʻano he stabilizer, aʻo nā mea ʻē aʻe e hoʻohana i kahi hui He/CO2/N2 e hoʻokō i ka hopena like. ʻO kekahi mau mea hoʻolaha kinoea he hui kinoea proprietary e hāʻawi i nā pono i hoʻohiki ʻia. Hoʻolaha pū nā mea kūʻai aku i kēia mau huila no nā ʻano hoʻoili ʻē aʻe me ka hopena like.
ʻO ka hewa nui o nā mea hana e hoʻāʻo nei e hoʻokaʻawale i ka GMAW stainless steel me ka hui kinoea like (75 Ar/25 CO2) me ke kila māmā, maʻamau no ka mea ʻaʻole lākou makemake e mālama i kahi cylinder keu. hiki i ke kalapona cessive i loko o ke kinoea pale ke hana i ka chromium carbide, ka mea e hōʻemi i ka pale ʻana i ka corrosion a me nā waiwai mechanical.
Ma ke ʻano he ʻaoʻao, i ke koho ʻana i nā metala no ka pōkole GMAW no ka 300 series base alloys (308, 309, 316, 347), pono nā mea hana e koho i ka LSi grade.LSi fillers he haʻahaʻa carbon content (0.02%) a no laila e koi nui ʻia inā loaʻa ka pilikia o ka corrosion intergranular. .
Pono nā mea hana e makaʻala i ka hoʻohana ʻana i nā kaʻina hoʻololi pōkole. Hiki ke hoʻohui ʻole ʻia ma muli o ke kinai ʻana i ke arc, e hana ana i ke kaʻina hana sub-par no nā noi koʻikoʻi. hui like ʻole.
ʻAʻole pono kēia mau ʻano hoʻoili wela kiʻekiʻe He pale kinoea. No ka hoʻoheheʻe ʻana i ka hoʻoili ʻana o 300 series alloys, kahi koho maʻamau ʻo 98% Ar a me 2% reactive mea e like me CO2 a i ʻole O2. ʻO kekahi mau hui kinoea hiki ke loaʻa i nā mea liʻiliʻi o N2.N2 i kahi kiʻekiʻe o ka ionization kiʻekiʻe a me ka thermal conductivity, e hoʻoikaika ana i ka hoʻomaʻemaʻe ʻana a hiki i ka hele wikiwiki a hoʻomaikaʻi paha;e hoemi ana i ka distortion.
No ka hoʻoili ʻana i ka pulupulu GMAW, 100% Ar paha he koho ʻae ʻia.
ʻOi aku ka lohi o ka wai i hoʻoheheʻe ʻia no nā mea kila kila ferritic a me nā kila stainless duplex (50/50 ratio of ferrite to austenite) . Ua lawa ka % CO2 a i ʻole O2 no ka hoʻonui ʻana i ka ʻike o ka oxide, no laila e pale aku nā mea hana iā lākou a mākaukau paha e hoʻolilo i ka manawa nui ma luna o lākou).Abrasive no ka mea paʻakikī loa kēia mau oxide a ʻaʻole hiki i ka pulupulu uea ke wehe iā lākou).
Hoʻohana nā mea hana i nā uea kuhili ʻole flux-cored no ka kuʻi ʻana i waho no ka mea ʻo ka ʻōnaehana slag i kēia mau uea e hāʻawi i kahi "papa" e kākoʻo ana i ka wai weld i kona paʻa ʻana. Pono e hoʻomaopopo i ka hiki ke hoʻemi i nā kumukūʻai wiliwili kiʻekiʻe a me nā helu deposition.
No ka 300 a me 400 moʻo alloys, 100% Ar e noho maʻamau koho no ke kinoea tungsten arc kuʻi (GTAW). I ka wā o GTAW o kekahi nickel alloys, oi aku me ka mechanized kaʻina hana, liʻiliʻi o ka hydrogen (a hiki i 5%) hiki ke hoʻonui i ka holo wikiwiki (e hoʻomaopopo ʻaʻole e like me ka carbon steels, nickel alloys, ʻaʻole prone i ka hydrogen māwae).
No ka welding superduplex a me ka superduplex stainless steels, 98% Ar / 2% N2 a me 98% Ar / 3% N2 he mau koho maikaʻi. ana, a no ka ma'alili koke o ka puna wai weld TIG, e mau ana ka ferrite keu ke hoohana ia 100% Ar. I ka hoohanaia ana o ka hui kinoea i loko o ka N2, e hooulu ka N2 iloko o ka punawai hehee a hooikaika i ka hana austenite.
Pono ke kila kila e pale i nā ʻaoʻao ʻelua o ka hui e hana i kahi weld i hoʻopau ʻia me ka pale ʻana i ka corrosion.
ʻAʻole pono ke kākoʻo ʻana i ke kinoea. Eia ka mea nui e pale aku i ka discoloration nui o ka wahi i hoʻopili ʻia i ka wela ma muli o ke kūkulu ʻana o ka oxide, a laila pono e wehe i ka mīkini. e like me ka paepae.Maikaʻi, pono ke kākoʻo ʻana ma lalo o 30 PPM O2. ʻO ka mea ʻē aʻe inā e ʻoki ʻia ke kua o ka weld, lepo a welded e hoʻokō i kahi weld penetration piha.
ʻO nā kinoea kākoʻo ʻelua i koho ʻia ʻo N2 (ʻoi loa) a me Ar (ʻoi aku ke kumukūʻai).
ʻO ka hoʻohui ʻana o 10.5% a ʻoi aku paha o ka chromium ka mea e hāʻawi ai i ke kila kila i kona mau waiwai. he metala kinoea a hoʻopiha no ka wili ʻana i ke kila kuhili ʻole.
E hoʻomau i ka ʻike me nā nūhou hou loa, nā hanana a me nā ʻenehana ma nā metala āpau mai kā mākou mau nūpepa ʻelua mahina i kākau wale ʻia no nā mea hana Kanada!
I kēia manawa me ke komo piha ʻana i ka paʻi kikohoʻe o Canadian Metalworking, hiki ke maʻalahi i nā kumuwaiwai waiwai waiwai.
I kēia manawa me ke komo piha ʻana i ka paʻi kikohoʻe o Made in Canada a me Welding, hiki ke maʻalahi i nā kumu waiwai waiwai.