S460N/Z35 pā kila maʻamau, European standard high strength plate, S460N, S460NL, S460N-Z35 steel profile: S460N, S460NL, S460N-Z35 is hot rolled weldable fine grain steel under normal/normal rolling condition, grade S460 steel plate mānoanoa. ʻaʻole iʻoi aku ma mua o 200mm.
S275 no ka hoʻokō ʻole ʻana i ke kila kila: EN10025-3, helu: 1.8901 ʻO ka inoa o ke kila aia nā ʻāpana aʻe: ʻO ka palapala hōʻailona S: ka mānoanoa e pili ana i ke kila ma lalo o 16mm ka waiwai o ka ikaika hua: ke kumu kūʻai liʻiliʻi. Hōʻike ʻo N e hōʻike ʻia ka hopena ma ka wela ma lalo o -50 degere e kahi leka nui L.
S460N, S460NL, S460N-Z35 Nā ana, ke ʻano, ke kaumaha a me ka ʻae ʻia ʻana.
ʻO ka nui, ke ʻano a me ka ʻae ʻia o ka ʻae ʻana o ka pā kila e hoʻokō me nā ʻōlelo o EN10025-1 ma 2004.
S460N, S460NL, S460N-Z35 kūlana hāʻawi Hāʻawi pinepine ʻia nā pā kila ma ke kūlana maʻamau a i ʻole ma o ka ʻōwili maʻamau ma lalo o nā kūlana like.
ʻO S460N, S460NL, S460N-Z35 ʻO ka Hui Kimia o S460N, S460NL, S460N-Z35 kila E hoʻokō i ka papaʻaina (%).
S460N, S460NL, S460N-Z35 nā koi hoʻohui kemika: Nb+Ti+V≤0.26;Cr+Mo≤0.38 S460N Ka Hoʻoheheʻe ʻana i ke Kalapona Kaulike (CEV).
S460N, S460NL, S460N-Z35 Mechanical properties ʻO nā mea mechanical a me nā hana kaʻina o S460N, S460NL, S460N-Z35 e hoʻokō i nā koi o ka papa ma lalo nei: Nā mea mīkini o S460N (kūpono no ka transverse).
S460N, S460NL, S460N-Z35 mana hopena ma ke kūlana maʻamau.
Ma hope o ka annealing a me ka maʻamau, hiki i ke kila kalapona ke loaʻa i ke ʻano kaulike a kokoke paha, a ma hope o ke kinai ʻana, hiki iā ia ke loaʻa i ka hoʻolālā non-equilibrium.No laila, i ka wā e aʻo ai i ka hale ma hope o ka mālama ʻana i ka wela, ʻaʻole wale ke kiʻi kalapona hao wale nō akā pono ke kuhikuhi ʻia i ka pale hoʻololi isothermal (C curve) o ke kila.
Hiki i ke kiʻikuhi kalapona hao ke hōʻike i ke kaʻina hana crystallization o ka huila i ka hoʻomaha mālie, ke ʻano ma ka lumi wela a me ka nui o nā pae, a hiki i ka C curve ke hōʻike i ke ʻano o ke kila me kahi ʻano hui ma lalo o nā kūlana hoʻoluʻu like ʻole.He kūpono ke ʻano C curve no nā kūlana hoʻoluʻu isothermal;Pili ka CCT (austenitic continuous cooling curve) i nā kūlana hoʻoluʻu mau.I kekahi ʻano, hiki ke hoʻohana ʻia ka C curve e koho i ka hoʻololi microstructure i ka wā hoʻomaha hoʻomau.
Ke hoʻolili mālie ʻia ka austenite (e like me ka hoʻoluʻu ʻana o ka umu, e like me ka mea i hōʻike ʻia ma ka Fig. 2 V1), ua kokoke nā huahana hoʻololi i ke ʻano equilibrium, ʻo ia hoʻi ka pearlite a me ka ferrite.Me ka piʻi ʻana o ka hoʻoluʻu ʻana, ʻo ia hoʻi, i ka wā V3> V2> V1, piʻi mālie ka undercooling o austenite, a ʻoi aku ka liʻiliʻi o ka ferrite precipitated, ʻoiai e piʻi mālie ka nui o ka pearlite, a ʻoi aku ka maikaʻi o ka hale.I kēia manawa, hoʻokaʻawale ʻia ka hapa liʻiliʻi o ka ferrite precipitated ma ka palena ʻai.
No laila, ʻo ke ʻano o v1 he ferrite+pearlite;ʻO ka hana o v2 he ferrite+sorbite;ʻO ka microstructure o v3 he ferrite+troostite.
I ka v4 ka helu hoʻoluʻu, ua hoʻoheheʻe ʻia kahi mea liʻiliʻi o ka ferrite pūnaewele a me ka troostite (i kekahi manawa hiki ke ʻike ʻia ka bainite liʻiliʻi) a ua hoʻololi nui ʻia ka austenite i martensite a me troostite;Ke ʻoi aku ka nui o ka hoʻoluʻu v5 i ka nui o ka hoʻoilo koʻikoʻi, hoʻololi ʻia ke kila i martensite.
ʻO ka hoʻololi ʻana o ke kila hypereutectoid ua like ia me ke kila hypoeutectoid, me ka ʻokoʻa o ka ferrite precipitates mua ma ka hope a me ka cementite precipitates mua i ka mua.
Ka manawa hoʻouna: Dec-14-2022
