Kuhili ʻole 904L 1.4539

ʻO nā kaʻina hana wiliwili maʻamau no kēia papa kila:

• TIG-Welding
• Uea paa paa MAG-weli
• Kuʻi ʻAka (E)
• Kuʻi ʻia ʻo Laser Bean
• Kuʻi ʻia ʻana i loko o ke awāwa (SAW)

I ke koho ʻana i ka metala hoʻopihapiha, pono e nānā ʻia ke koʻikoʻi corrosion. ʻO ka hoʻohana ʻana i kahi metala hoʻopihapiha hoʻopihapiha kiʻekiʻe e pono ai ma muli o ke ʻano hoʻoheheʻe o ka metala weld. ʻAʻole pono ka preheating no kēia kila. ʻAʻole maʻamau ka hoʻomaʻamaʻa wela ma hope o ka wili ʻana. ʻO nā kila Austenitic wale nō ka 30% o ka conductivity thermal o nā kila non-alloyed. 'O ka ha'aha'a ko lākou hui 'ana ma mua o ke kila 'ole, no laila, pono e wili 'ia nā kila austenitic me ka ho'okomo wela ha'aha'a ma mua o nā kila i ho'ohui'ole'ia. No ka pale ʻana i ka wela a i ʻole ke puhi ʻana i nā lau ʻoi aku ka lahilahi, pono e hoʻopili ʻia ka wikiwiki kuʻi ʻana. ʻO nā pākuʻi keleawe no ka hōʻole ʻana i ka wela he hana, akā, no ka pale ʻana i nā māwae o ka metala solder, ʻaʻole ʻae ʻia e hoʻokuʻu i ka pā keleawe i hope. ʻO kēia kila he koena kiʻekiʻe loa o ka hoʻonui wela e like me ke kila non-alloyed. Ma ka pili ana i ka hoʻoili wela ʻoi aku ka maikaʻi, pono e manaʻo ʻia kahi distortion ʻoi aku. I ka wā e wili ai i ka 1.4539 nā kaʻina hana a pau, e kūʻē i kēia distortion (e laʻa me ka hoʻoheheʻe ʻana i ke kaʻina hope, ka hoʻohui ʻana ma nā ʻaoʻao ʻē aʻe me ka lua-V butt weld, ka hāʻawi ʻana i ʻelua welders inā nui nā ʻāpana) pono e mahalo nui ʻia. No ka mānoanoa o nā huahana ma luna o 12mm, pono e koho ʻia ka weld ʻālua-V ma mua o ka weld kīwī hoʻokahi-V. ʻO ka huina i hoʻokomo ʻia he 60 ° - 70 °, i ka wā e hoʻohana ai i ka MIG-weld ma kahi o 50 ° ua lawa. Pono e pale ʻia ka hōʻiliʻili ʻana o ka weld seams. Pono e hoʻopili ʻia nā weld Tack me nā mamao ʻoi aku ka pōkole mai kekahi i kekahi (ʻoi aku ka pōkole ma mua o kēia o nā kila non-alloyed), i mea e pale aku ai i ka hoʻololi ikaika ʻana, ka emi ʻana a i ʻole ka hoʻoheheʻe ʻana i nā welds. Pono e wili ʻia nā pahu ma hope a i ʻole ka liʻiliʻi loa mai nā māwae lua. 1.4539 e pili ana me austenitic weld metala a me ka wela kiʻekiʻe loa i ka addiction e hana i nā māwae wela. Hiki ke hoʻopaʻa ʻia ka hoʻohui ʻana i nā māwae wela, inā he haʻahaʻa ka haʻahaʻa o ka ferrite (delta ferrite) ka metala weld. Loaʻa ka hopena maikaʻi o ka ferrite a hiki i ka 10% a ʻaʻole pili i ka pale corrosion maʻamau. Pono e wili ʻia ka papa ʻoi loa (stringer bead technique) no ka mea, ʻoi aku ka wikiwiki o ka hoʻomaha ʻana e hoʻemi i ka hoʻohui i nā māwae wela. Pono e makemake ʻia ka hoʻoluʻu ʻoi aku ka wikiwiki i ka wā e wili ai, e pale aku i ka nāwaliwali o ka intergranular corrosion a me ka embrittlement. He kūpono loa ka 1.4539 no ka welding beam laser (weldability A e like me DVS bulletin 3203, māhele 3). Me ka laula welding groove liʻiliʻi ma mua o 0.3mm pākahi 0.1mm mānoanoa huahana ʻaʻole pono ka hoʻohana ʻana i nā metala hoʻopiha. Me nā awāwa wiliwili nui aʻe hiki ke hoʻohana ʻia kahi metala hoʻopiha like. Me ka pale ʻana i ka hoʻoheheʻe ʻana i loko o ke kuʻi ʻana i ke kuʻi kuʻihao laser e pili ana i ka kuʻi lima hope, e laʻa me ka helium ma ke ʻano he kinoea inert, ʻoi aku ka pale ʻana o ke kuʻi wili e like me ka metala kumu. ʻAʻole i loaʻa kahi pōʻino wela no ka hili kuʻi ʻana, ke koho ʻana i kahi kaʻina kūpono. He kūpono ka 1.4539 no ka ʻoki ʻana i ka kukuna laser me ka nitrogen a i ʻole ka ʻoki ʻana i ke ahi me ka oxygen. ʻO nā ʻaoʻao i ʻoki ʻia he mau ʻāpana wela liʻiliʻi wale nō a ʻaʻohe maʻamau o nā māwae mirco a no laila hiki ke hana maikaʻi ʻia. ʻOiai ke koho ʻana i nā kaʻina hana kūpono hiki ke hoʻololi pololei ʻia nā kihi ʻoki fusion. ʻO ka mea nui, hiki iā lākou ke welded me ka ʻole o ka hoʻomākaukau hou ʻana. ʻOiai ʻo ka hana ʻana i nā mea hana kuhili wale e like me nā pulu kila, nā koho pneumatic a pēlā aku e ʻae ʻia, i ʻole e hoʻoweliweli i ka passivation. Pono e mālama ʻole ʻia ke kaha ʻana i loko o ka ʻāpana humuhumu kuʻi me nā bolts oleaginous a i ʻole ka wela e hōʻike ana i nā peni penikala. Hoʻokumu ʻia ke kūpaʻa kiʻekiʻe o nā corrosions o kēia kila kila ma ka hoʻokumu ʻana i kahi ʻāpana paʻa like like ʻole ma ka ʻili. Pono e wehe ʻia nā waihoʻoluʻu, unahi, koena slag, tramp iron, spatters a me nā mea like, i ʻole e luku i ka papa passive. No ka hoʻomaʻemaʻe ʻana i ka ʻili, hiki ke hoʻohana ʻia nā kaʻina o ka palaki ʻana, ka wili ʻana, ka pickling a i ʻole ka puhi ʻana (ke one silica hao ʻole a i ʻole nā ​​aniani aniani). No ka palu ʻana, hiki ke hoʻohana ʻia nā pulupulu kila kila. Hoʻohana ʻia ka pickling o ka wahi seam i hoʻomaʻamaʻa mua ʻia e ka ʻū ʻana a me ka pīpī ʻana, akā naʻe, hoʻohana pinepine ʻia nā paʻi pickling a i ʻole nā ​​​​mea hoʻonā. Ma hope o ke kanu ʻana, pono e holoi ʻia me ka wai.