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QN1803 Ke kila kila: ʻOkoʻa hana kiʻekiʻe i ka 304
2025-06-12
Nānā nui: ʻO QN1803 (i kapa ʻia ʻo 304D a i ʻole grade 1.4376) he kila kila austenitic hou mai Tsingshan/Qingtuo. Hoʻokumu ʻia me ka nitrogen kiʻekiʻe, ka chromium kiʻekiʻe a me ke keleawe, a me ka ʻike nickel i hoʻemi ʻia e hāʻawi ʻoi aku ka ikaika a me ka pale ʻana i ka corrosion ma ke kumu kūʻai haʻahaʻama mua o ka maʻamau 304. Ua wehewehe ʻia ʻo QN1803 ma ke ʻano he "ʻokoʻa kūʻai kūpono i nā kuʻuna 304 Ke kila kila,” hāʻawi"ʻoi aku ka maikaʻi o ka corrosion, ka ikaika kiʻekiʻe, a me ke kūpaʻa maikaʻi loa". ʻO kāna hoʻolālā kiʻekiʻe-nitrogen, haʻahaʻa-nickel hoʻohaʻahaʻa i ke kumukūʻai alloy me ka ʻole o ka hoʻokō ʻana i ka hana. He mea maʻalahi ka hana a me ka weld ka alloy, a kū i nā kūlana honua a me nā palapala hōʻoia meaʻai, kūpono ia no ka lawe ʻana aku i ka honua.
ʻO ka hui pū ʻana o nā huila kiʻekiʻe-Nitrogen, Nickel-Saving Alloy
Hoʻopili ʻia ke kemika o QN1803 no ka hana a me ka maikaʻi o ke kumu kūʻai. Aia i loko Cr 17.5–19.5%, Ma o 1.0–3.5%, a N 0.20–0.30%, me ʻAʻole ʻo 2.0-3.5% wale nō. (kūʻē i ~8% ma 304). ʻO ka hoʻohālikelike, 304 kila he ~ 18% Cr, 8% Ni, ~ 0.045% N, a he ~ 0.1% Cu wale nō. Hoʻonui ka nitrogen a me ka chromium i ka ikaika a me ka pitting resistance, ʻoiai ke keleawe i hoʻohui ʻia e hāʻawi i nā waiwai antibacterial a ʻoi aku ka maikaʻi. ʻO ka maʻiʻo nickel haʻahaʻa (a me ka manganese haʻahaʻa) e hoʻemi nui i ke kumu kūʻai. I ka pōkole, QN1803's kiʻekiʻe-Ni-saving formula e hāʻawi mai i ke kila kuhiliʻole me ka ʻino a me nā ʻano mechanical e like a ʻoi aku ka maikaʻi ma mua o 304 ma ke kumukūʻai haʻahaʻa haʻahaʻa.
Ka ikaika a me ka lōʻihi o ka mīkini
QN1803 hōʻike ʻoi aku ka maikaʻi o nā waiwai mechanical i hoʻohālikelike ʻia me 304. ʻO nā waiwai maʻamau no ka pepa anu i ʻōwili ʻia (0.5 mm): ka ikaika tensile ~ 747 MPa vs 670 MPa no 304, a me ka ikaika o ka hua ~ 432 MPa vs 290 MPa. ʻOi aku ke kiʻekiʻe o ka paʻakikī (HV 230 vs 165). Noho kiʻekiʻe ka elongation (≈52% vs 59% no 304) ʻoiai ka ikaika boos. Ma nā ʻōlelo kūpono, pili ka hua o QN1803 1.3× ʻo ia o 304 oiai e mālama ana i ka ductility (elongation ≥45%). ʻO ka hopena he mea ʻoi aku ka paʻakikī, ʻoi aku ka luhi a me ka ʻaʻahu. Hoʻopili maikaʻi ʻo ia a hana maikaʻi: hoʻokūkū ka ikaika ma hope o ka weld a ʻoi aku paha ma mua o 304, a ʻaʻole hoʻohaʻahaʻa ke anuanu i ka pale ʻana i ka corrosion.
ʻIkepili Mekani Nui:
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ʻOi aku ka ikaika: ~747 MPa (vs 670 MPa no 304).
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Ka ikaika hua: ~432 MPa (vs 290 MPa).
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Elongation: ~52% (vs 58.5%).
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ʻoʻoleʻa: HV230 (vs HV165).
ʻOi aku ka pale ʻino ʻana
ʻO ka hua kiʻekiʻe Cr a me N o ka huila maikaʻi maikaʻi hana corrosion. ʻOi aku ka helu kaulike o ka Pitting Resistance Equivalent (PREN) o QN1803 ma mua o 19, pili a ʻoi aku paha i ke kūpaʻa o 304 (PREN≈18.5). I nā hoʻokolohua maʻamau, hōʻike ʻo QN1803 ʻoi aku ka maikaʻi ka pale ʻana i ka corrosion ma hope o ka hoʻokumu ʻana i ke anu (kūlou, stamping, a me nā mea ʻē aʻe) i hoʻohālikelike ʻia me 304. He kūpaʻa loa ia i ka dilute acids (HCl, H₂SO₄) a me ka chloride-containing environment. No ka laʻana, i ka hoʻāʻo ʻana i ka paʻakai paʻakai kūʻokoʻa (NSS) ma nā kūlana GB/T, ʻAʻole ʻike ʻia ʻo QN1803 ma hope o 1000 mau hola. I ka ho'āʻo like ʻana e hoʻomaka maʻamau ka 304 e ʻino. ʻO kēia ʻoi aku ka maikaʻi o ka paʻakai paʻakai e kuhikuhi ana i ka hilinaʻi o QN1803 i nā kūlana koʻikoʻi o waho a i ʻole ka moana.
ʻIkepili ʻino:
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LAAU: >19.0 (304 he ≈18.5).
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Paʻakai paʻakai: ʻAʻohe ʻōpala ma hope o 1000 h NSS hoʻāʻo.
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ʻAkika/Cloride: Ua ʻoi aku ka maikaʻi o ka ʻaʻahu a me ke kūpaʻa pitting ma mua o 304, ʻoiai ma hope o ka hana ʻana
Palekana Meaʻai a me nā waiwai antibacterial
ʻO QN1803 ka meaʻai-palekana a hāʻawi pū i ka hopena antibacterial i kūkulu ʻia. ʻO ka maʻemaʻe kiʻekiʻe a me nā haʻahaʻa haʻahaʻa haʻahaʻa haʻahaʻa e kūpono i nā kūlana EU, German LFGB a me JIS no nā lako kīhini a me nā meaʻai. ʻO ka hoʻohuihui keleawe (~ 1-3.5%) hāʻawi i ka hana antimicrobial ikaika: hōʻike nā hōʻike he> 99.9% sterilization rate i loko o 4 mau hola (JIS standard). Hoʻohui ʻia me ke kūpaʻa corrosion maikaʻi loa i nā meaʻai maʻamau / paʻakai, kūpono ʻo QN1803 no nā kīʻaha kīhini, nā mea kuke, nā poho a me nā ʻauwai papahele. No ka laʻana, ua hele ʻo QN1803 i nā hoʻāʻo neʻe ʻāina no nā metala kaumaha a ʻoi aku ma mua o 304 i ke kūpaʻa paʻakai nāwaliwali. I loko o nā pahu wai a me nā ʻōnaehana hoʻomaʻemaʻe, kōkua pū ke keleawe i ke kāohi ʻana i ka ulu ʻana o ka bacteria, e ʻoi aku ka maikaʻi o ka wai mālama ʻia.
Kiʻi: Hoʻonohonoho ʻia nā mea kuke kila kila. ʻO ka QN1803 kiʻekiʻe corrosion kūpaʻa a me ka copper-alloy maʻiʻo e kūpono ana i nā kūlana meaʻai a me nā antibacterial standard (JIS/EU/LFGB) no ka lumi kuke a me nā huahana maʻemaʻe.
Nā noi a me nā hihia hoʻohana
ʻO ka hui pū ʻana o QN1803 o ka ikaika, ka pale ʻana i ka corrosion a me ka maikaʻi o ke kumu kūʻai e hoʻolilo iā ia i mea maʻalahi ma nā ʻoihana he nui. Hoʻohana ʻia ia no:
Kūkulu & Hoʻolālā: Loaʻa ka pōmaikaʻi o ke kaupaku, nā pā pā, nā pā pale a me nā pale hoʻonaninani mai ka ikaika kiʻekiʻe o QN1803 a me ka pale ʻana i ka wā. ʻOi aku ka ikaika o ka hua kiʻekiʻe (ʻoi aku ka nui o nā māka kila māmā) hiki i nā panela ana māmā.
Paipu a me nā ʻoihana: ʻO nā paipu hoʻoheheʻe a me ke ahi, nā paipu, nā ʻauwai a me nā ʻōnaehana wai e loaʻa i ke ola ʻoi aku ka lōʻihi o ke ola ma muli o ka pale ʻana o ke kila i ka ʻōpala a me ka ʻakika. I nā paipu kinoea a i ʻole nā hale kiaʻi desulfurization, ʻoi aku ka maikaʻi o ka QN1803 i ka corrosion i loko o ka sulfur ma mua o 304.
Waihona wai & Mahiai: Hoʻohana nā pahu, nā waihona a me nā hale mahiʻai kai i ka QN1803 no kāna ʻano keleawe antibacterial a me ka paʻakai paʻakai. Kākoʻo kona ikaika i nā ukana kaumaha ma nā lako holoholona.
ʻO ka lumi kuke a me nā mea hana: ʻO nā mea pale, nā poho, nā mea kuke, a me nā mīkini meaʻai makemake i ka QN1803 no ka palekana o ka meaʻai. ʻOi aku ka maikaʻi ma mua o 304, a hoʻokō i nā kūlana hoʻomaʻemaʻe honua.
Nā mea kūʻai a me nā huahana kālepa: ʻO nā puka paʻa, nā paneli ʻeleʻele, a me nā ʻūlū hoʻonani a i ʻole nā hao e hoʻohana i ka ʻoi aku ka paʻakikī o QN1803 a me ke kūpaʻa. Hoʻohālikelike ʻia me 304 i nā noi puka / puka, mālama ʻo QN1803 i ka hoʻopau a me ke ʻano ma lalo o ka hopena a me nā ukana makani. Hoʻopili maikaʻi ʻia a poli no nā mea hana a me nā ipu lawe.
Kiʻi: Lako ipuka hao hao. Hāʻawi ʻo QN1803 i ka ʻoi aku ka paʻakikī a me ka ikaika ma mua o 304 no nā lako hana hale a me nā mea kūʻai aku, ʻoiai e hāʻawi ana i ke kūpaʻa ʻoi aku ka maikaʻi o ka corrosion i nā kaiapuni waho.
ʻO nā mea maikaʻi ma mua o 304 Stainless Steel
Hoʻohālikelike ʻia me 304 maʻamau, hāʻawi ʻo QN1803 nā hoʻomaikaʻi kaulana ma nā wahi nui:
Nā Pono Mechanical: E like me ka mea i hōʻike ʻia, ʻoi aku ka nui o kona tensile a me ka hoʻoulu ʻana ma kahi o 15-30% kiʻekiʻe ma mua o 304. Hoʻomaikaʻi ʻia ka ola paʻakikī a me ka luhi, e ʻae ana i nā ʻāpana lahilahi a i ʻole nā mea māmā no ka hana like.
Hana ʻino: Kūlike ʻo QN1803 a ʻoi aku paha ma mua o 304 ka pale ʻana i ka corrosion ma nā hoʻokolohua āpau. ʻOi aku ka PREN kiʻekiʻe a me ka sulfuric/chloride kūpaʻa ʻoi aku ka maikaʻi ma mua o 304 i nā kūlana koʻikoʻi a i hoʻokumu ʻia paha. Ke pale nei ia i ka lua a me ka crevice corrosion a i loko o ka lumi kuke a me nā lewa moana, e lilo ia i koho paʻa loa no ka hoʻohana ʻana i waho a me nā meaʻai.
Kūʻai kūpono: Mahalo i ka nickel haʻahaʻa a me ka nitrogen / copper kiʻekiʻe, hiki ke kūʻai ʻia ʻo QN1803 a hiki i ~20% ka liʻiliʻi ma mua o 304 no ka ton (ma muli o ka mākeke) ʻoiai e hāʻawi ana i ka hana like a ʻoi aku ka maikaʻi. Hoʻomaopopo ka poʻe loiloi "ʻo ka mea hiki iā 304 ke hana, hiki iā 304D ke hana, a ʻoi aku ka liʻiliʻi o ke kumukūʻai". ʻO ke kumu kūʻai haʻahaʻa haʻahaʻa a me ka lōʻihi o ke ola o nā mea i unuhi ʻia i ke kumu kūʻai haʻahaʻa o ka ʻona.
Palekana meaʻai/olaola: Ua hōʻoia ʻia ʻo QN1803 no ka hoʻohana ʻana i ka meaʻai. ʻO kāna haku mele keleawe i hoʻonui ʻia, hoʻomaʻemaʻe kiʻekiʻe e hele i nā hoʻokolohua antibacterial a me ka neʻe ʻana (EU, JIS, LFGB), ʻaʻole hiki i kekahi mau māka 304. ʻOi aku ka maikaʻi o kēia no ka lumi kuke, hoʻomaʻemaʻe a me nā noi wai e koi ana i ka palekana hōʻoia.
Ma ka hōʻuluʻulu, QN1803/304D kila kila hā'awi i nā 'enekinia a me nā loea kū'ai i nā mea hana ki'eki'e, palekana i ka mea'ai, a me ke kumu kū'ai. Kona hui ana o kiʻekiʻe nitrogen alloying, kiʻekiʻe Cr/Cu, waena Ni Hāʻawi iā ia i ka ikaika mechanical a me ke kūpaʻa corrosion e hālāwai a ʻoi aku paha ma mua o 304, ʻoiai e mālama ana i nā kumukūʻai nickel. ʻO ka hilinaʻi o ka alloy i nā hoʻokolohua maʻamau o ka honua (NSS 1000h, JIS antibacterial, etc.) a me kāna ʻano hoʻohana ākea e lilo ia i mea hoʻolālā no nā huahana kila stainless hou.