Hōʻuluʻulu manaʻo o ke kaʻina hana kuʻihao kuhili ʻole

ʻElua: kaʻina hana kuʻi

ʻO ke koho ʻana o nā mea hoʻoheheʻe kila kila e hahai i ke kumu o ka "homogeneity".

1. Ferritic kuhiliʻole kila Ina ka welding kaʻina hana i wela ma 430-480 °C no ka manawa lōʻihi a cooled mālie, he mea maʻalahi loa e hana 475 °C brittleness, a me na haumia e pāʻani catalytic kuleana. Paipai ke kaʻina hana kuʻiʻo haʻahaʻa i kēia manawa, hoʻopaʻa wikiwiki, ʻaʻohe oscillation, a me ka hoʻomalu wela interlayer haʻahaʻa i ka wā wili multilayer. No ka wiliwili ʻana i nā mea hana mānoanoa, pono e hoʻomaloʻo ʻia ke kuʻi weld i mea e hōʻemi ai i ke kaumaha o ka emi ʻana.

2. Martensitic kuhiliʻole kila wela-pili wahi embrittlement a me ka wiliwili māwae anu e pono e pale aku i ka mea hiki i ka wā wili, maʻamau e lawe i ka like preheating ma mua o wiliwili (150-300 °C) a me ka post-weld wela lapaʻau (700-750 °. C) nā ana, ka hoʻohana ʻana i ka ikehu laina nui, inā pono, hiki iā ʻoe ke koho i nā mea welding austenitic.

3. Austenitic kuhiliʻole kila ʻO nā mea hoʻonā o ka wela wela a me ka intergranular corrosion nā mea nui e noʻonoʻo ai no ka hoʻopili ʻana o ia ʻano kila kila, i ka nānā ʻana i kona ʻano kino, pono e lawe ʻia kahi ikehu laina liʻiliʻi no ka welding, ka hoʻoilo wikiwiki, a me ka haʻahaʻa interlayer wela. pono e hoomaluia i ka wiliwili multilayer. E ho'āʻo e hoʻokomo i ka nui kūpono o ka ferrite i ka wā e wili ai i mea e pale ai i ka hiki ʻana mai o nā māwae wela. I loko o ka ʻoihana petrochemical e like me ka hydrogenation reactors a me nā huahana kikoʻī ʻē aʻe, ua ʻōlelo maopopo ʻia ka helu o nā ferrites (FN) o ka weld, koi maʻamau 3-10.

4. Austria-hao duplex kuhiliʻole kila i haʻahaʻa māwae hoʻohālikelike me austenitic kila; Ke hoʻohālikelike ʻia me ke kila ferritic, haʻahaʻa ka embrittlement post-weld, no laila he maikaʻi loa ka weldability, ʻaʻole preheating a ma hope o ka hoʻomehana ʻana, ʻaʻole hana ʻia nā māwae welding. Eia nō naʻe, i ka wā e hoʻomehana ai i nā mahana kiʻekiʻe, aia kahi ʻano o ka ulu ʻana o ka palaoa, a pono e lawe ʻia ka ikehu laina liʻiliʻi i ka wā wili.

5. Ke kila kuhiliʻole paʻa i ka ua Ma muli o ka paʻakikī kiʻekiʻe, ka ʻilihune ʻino a me ka plasticity o kēia ʻano kila, a me ke koʻikoʻi koʻikoʻi koʻikoʻi nui, ua maʻalahi ka hana ʻana i nā māwae. Manaʻo ʻia kahi kaʻina hana kuʻi ʻana e like me ka martensitic stainless steel, akā pono e hoʻonui ʻia ka mahana preheating.

Nānā:ʻO ka AWSA5.9 maʻamau no nā wili uila a me nā mea hoʻopiha piha a me ka YB/T5092 Standard no ke kila kila no ka welding e kuhikuhi ana i ka loiloi kemika o nā mea hoʻoheheʻe i hoʻoheheʻe ʻia o ka uea i hui pū ʻia a i ʻole ka hoʻopiha piha ʻana ʻo ia wale nō ka hoʻokolohua e pono ai no ka hoʻokaʻawale ʻana i kēia huahana. palapala. ʻO ia, nā waiwai mechanical a me nā hoʻokolohua ʻē aʻe, e like me nā pono o ka mea kūʻai aku.
Hōʻike ʻia ka ʻaʻahu ʻulaʻula R i ke kapa ʻulaʻula, e like me GES-308R ke kapa ʻulaʻula GES-308, ʻo GES-312B ka ʻili pila uliuli GES-312. .