1. Ka Waihona Kakau
ʻO nā koi no ka pipeline prefabrication ma ka ʻenehana waho a me nā ʻoihana petrochemical he kiʻekiʻe, a he nui ka nui o ka hana. Hoʻohana ʻia ka base manual TIG welding manual a me ka MIG welding filling and covering, akā ʻaʻole kūpono ka maikaʻi a me ka maikaʻi. Hoʻohana kēia pepa i kahi kaʻina hana hoʻoheheʻe hou-kiʻekiʻe-efficiency wela wela TIG welding, e hoʻokō i ka TIG base welding, hoʻopiha i ka welding a me ka uhi ʻana i ka welding, a hoʻokō i ka MIG welding kiʻekiʻe-efficiency welding ala e hoʻololi i ke ʻano kuʻuna. Ma o kēia hoʻokolohua, ua hōʻoiaʻiʻoʻia nāʻano mechanical o ka noiʻi i ka maikaʻi a ua hoʻohana maikaʻiʻia i kaʻoihana.
Ke kumu noiʻi
I kēia manawa, hoʻohana ke kaʻina hana kuʻuna maʻamau i ka wili TIG manual no ka base, ka wili lima a i ʻole ka wili MIG, ka wili arc submerged a me nā ʻano hana ʻē aʻe e hoʻopiha a uhi e hoʻomaikaʻi i ka maikaʻi o ka wili. Eia nō naʻe, ʻaʻole maʻalahi kēia mau hana hoʻopiha a me ka uhi ʻana e hoʻokō i ka welding maʻalahi, ʻaʻole kūpono i nā diameters paipu like ʻole, maʻalahi ka hana ʻana i nā hemahema welding, a ua kaupalena ʻia ka pae o ka maikaʻi o ka welding e ka pae hana o nā limahana.
Hoʻohālikelike me ka TIG kuʻihao maʻamau, wela uea TIG kuʻihao pākuʻi i kaʻawale wela uea mana lako e preheat ke kuʻihao uea ma ke kumu o kuʻuna anu uea, a hoonui i ka hehee ana o ka welding uwea me ka hoololi ole i ka ikehu laina kuʻihao. Ma kēia ala, ʻo ka welding arc i hāʻawi ʻia e pono wale nō e hoʻolilo i kahi liʻiliʻi o ka ikehu e hoʻoheheʻe ai i ka uwea welding, a laila e hoʻomaikaʻi ai i ka hana hana kuʻi.
ʻOi aku ka maikaʻi o ka uea wela TIG ma mua o 5 mau manawa ma mua o ka TIG maʻamau, e like me ka MIG welding wikiwiki, a ua hoʻonui ʻia ka helu deposition mai 0.3 ~ 0.5kg / h a 2 ~ 4kg / h. Aia ka ʻenehana TIG uea wela kūloko i kahi pae stagnant a mamao loa mai ka loaʻa ʻana o ka maikaʻi a me ke kūlana kiʻekiʻe. ʻAʻole i hoʻomaikaʻi maikaʻi ʻia ka maikaʻi o ke kaʻina hana wili wela TIG a ʻaʻole hiki ke hōʻea i ka pono o MIG welding. No laila, he mea koʻikoʻi a koʻikoʻi ka hoʻomohala ʻana i kahi kaʻina hoʻoheheʻe TIG uea wela kūpono.
3.1 Mea hoʻokolohua
ʻO ka mea makuahine o ka paipu hoʻokolohua he kila Q235-A, me ka mānoanoa o 12mm a me ke anawaena o waho o 108mm. Hōʻike ʻia ka hui kemika ma ka Papa 1. ʻO ka ikaika tensile o ke kila Q235-A ʻo σb=482MPa, ʻo ka ikaika hua σs=235MPa, a ʻo ka elongation ʻo δ=26%. Hoʻohana ʻia ka H08Mn2Si welding wire me ke anawaena o 1.2mm. Hōʻike ʻia ka hui kemika ma ka Papa 1. ʻO ka ikaika tensile o H08Mn2Si welding wire he σb≥500 MPa, ʻo ka ikaika o ka hāʻawi ʻana he σs≥420MPa, a ʻo ka elongation he δ≥22%.
Loaʻa i nā lako wili Xinfa nā hiʻohiʻona o ke kiʻekiʻe kiʻekiʻe a me ke kumu kūʻai haʻahaʻa. No nā kikoʻī, e kipa:Welding & Oki Manufacturers - China Welding & Cutting Factory & Suppliers (xinfatools.com)
3.2 Hana hoʻokolohua
Ua hoʻohana ka hoʻāʻo ʻana i ka KB370 open-type pipe clamp type pipeline prefabrication high-efficiency hot wire TIG welding system e like me ka mea i hōʻike ʻia ma ke Kiʻi 1, ka PHOENIX-521 multi-function kuʻihao mana kumu, a me ka ʻoi arc-200 wela wela kumu mana. Ua hoʻohana ʻia ke kaʻina hana wiliwī wela TIG, a ua hōʻike ʻia ke kiʻi schematic hui ma ke Kiʻi 2.
Kiʻi 1 KB370 paipu pipili ʻano kiʻekiʻe-efficiency wela uwea kuʻihao nenoaiu
Kiʻi 2 Hōʻike kiʻi kiʻi o ka hui
Ma mua o ke kuʻi ʻana, ʻo loko a ma waho o ke awāwa o ka ʻāpana hoʻāʻo paipu i lepo a hoʻoneʻe ʻia, me kahi ākea o 25mm. Ma mua o ka hoʻāʻo ʻana, ua hoʻopaʻa ʻia ka ʻāpana hoʻāʻo paipu e ka welding wahi. Ua lawa ka wiliwili wahi ekolu. Mālama ʻia ka misalignment i loko o 1.5mm a ʻaʻohe wahi āpau.
3.3 Nā hopena hoʻokolohua
Ma hope o ka wili ʻia ʻana o nā ʻano paipu, ua hoʻopaʻa mua ʻia lākou i ka X-ray flaw detection, a ua hala nā mea āpau i ka pae I. ʻO nā hoʻokolohua ʻē aʻe i hoʻohana i nā hoʻokolohua macroscopic metallographic, microscopic metallographic a me nā hoʻokolohua waiwai mechanical, e like me ka hōʻike ʻana ma nā Kiʻi 3, 4, 5, 6 a me ka Papa 3. Hōʻike maopopo nā kiʻi 3 a me 4 i ka morphology weld ʻekolu-layer, nā hoʻololi o ka hoʻonohonoho hoʻonohonoho, ka wahi liʻiliʻi i hoʻopili ʻia i ka wela o ka weld, ʻaʻohe pores a māwae paha. Hōʻike ka papa 3 i nā welds a pau i haki ʻia i loko o ka ʻāpana makua, a ʻo ka piko maikaʻi a me ke kua i hoʻokō ʻia i nā koi o GB / T14452-93 maʻamau. E like me ka mea i ʻike ʻia mai ka Papa 4, ua huki ʻia kēia mau hopena:
Kiʻi 3 Microstructure o ke kumu metala, ka wela wela a me ka weld pauku kea
Kiʻi 4 Macroscopic metallographic hana o weld pauku kea
Kiʻi 5 Hoʻāʻo tensile
(a) Piʻo maikaʻi
(b)Kuku hope
Hiki i ka uea wela wela TIG ke hoʻokō i ka maikaʻi o ka wiliwili TIG a me ka wikiwiki wiliwili MAG, akā he mau hemahema ka wili MAG e like me ka spatter nui, arc ikaika, porosity nui, ikehu laina nui, a me ka nui wili. ʻOiai ʻoi aku ka kiʻekiʻe o kāna deposition pono, ʻaʻole ia e like me ka paʻa a hilinaʻi hoʻi e like me ka TIG welding ma lalo o nā koi kiʻekiʻe. ʻO ka maikaʻi piha o ka wili wela wela TIG e like a i ʻole ʻoi aku ka nui ma mua o ka welding MAG;
ʻO ka wili wela wela kiʻekiʻe ʻo TIG a me ka wili kuʻuna maʻamau TIG wiliwili i loaʻa ka hoʻomaikaʻi holoʻokoʻa holoʻokoʻa o 5 a 10 mau manawa.
4. Ka hopena hoʻokolohua
4.1 Hiki ke loaʻa i ka weld uea wela TIG ka weld me ka ʻili kīnā ʻole a me ka hoʻokumu maikaʻi ʻana;
4.2 ʻO ka uea hānai wikiwiki o ka welding wela TIG hiki i 5m / min, a hiki i 6.5m / min, a hiki i ka helu hoʻoheheʻe ke hiki i 3.5kg / h, kahi e hoʻomaikaʻi nui ai i ka hana pono;
4.3 ʻO ka haʻihaʻi tensile o nā welds TIG wela wela i loko o ka mea makua, kahi e hoʻomaikaʻi ai i ka hana hui;
4.4 Kiʻekiʻe-efficiency wela uea TIG kuʻihao maoli hoʻokō i ka maikaʻi kuʻihao o TIG kuʻihao a me ka wikiwiki kuʻihao o MIG kuʻihao.
5. Makeke i nā noi a me nā manaʻo
Ma hope o ʻelua mau makahiki o ka hoʻolaha ʻana o ka mākeke a me ka noi ʻana, ua hoʻohana nui ʻia mākou i ka ʻenekinia moana, gas, instrumentation, petrochemicals, a me nā ipu.
ʻO ke kaʻina hana hoʻoheheʻe TIG wela kiʻekiʻe ʻaʻole kūpono wale no ke kila kalapona, akā no ke kila kila, ke kila kila, ke kila duplex, nā nickel-based alloys a me nā mea ʻē aʻe (ua hōʻike ʻia nā hoʻokolohua ma nā mea like ʻole, ʻoi loa i ke kila duplex. ke kaʻina hana kuʻi ʻana i ka ʻenekinia moana a me nā ʻoihana ʻē aʻe, ʻoi aku ka maikaʻi o ka wili wela TIG welding i nā pono like ʻole). Ua haki i ka monopoly o ka uwea wela TIG welding ma Kina, a he 1.5 a 2 mau manawa ke ki'eki'e o kona pono ma mua o ko na uea wela o na aina e ke hoohalikeia me na lama haole.
Hoʻopiha kēia ʻenehana i ka hakahaka o ka paipu hoʻoheheʻe prefabrication, he huahana ʻenehana kaʻina hana hou i kūpono i nā kūlana aupuni o Kina, a he hana hoʻopōʻino i ka ʻoihana prefabrication pipeline. Hiki iā ia ke hoʻololi piha i ke kaʻina hana kuʻuna o TIG primer + MAG hoʻopiha a uhi ʻia i ke kaʻina hana ʻelua, e pale aku i nā mea hoʻohana mai ke kūʻai pinepine ʻana i nā lako, a he ʻōnaehana hoʻoheheʻe prefabrication prefabrication maoli. ʻO ka ʻōnaehana welding me kēia ʻenehana e like me ke kaʻina hana nui i kēia manawa i hoʻopili ʻia i ka ʻōnaehana prefabrication pipeline akamai, a ākea ka mākeke.
Ka manawa hoʻouna: ʻAukake-27-2024
