I-304 insimbi engenasici yinto eqhelekileyo phakathi kweentsimbi ezingenasici, ezinobuninzi be-7.93 g/cm³; ikwabizwa ngokuba yi-18/8 yensimbi engenasici kwishishini, oku kuthetha ukuba iqulethe ngaphezu kwe-18% ye-chromium kunye ne-nickel engaphezu kwe-8%; iyaxhathisa kumaqondo obushushu aphezulu angama-800 ℃, inokusebenza kakuhle kunye nokuqina okuphezulu, kwaye isetyenziswa ngokubanzi kumashishini okuhombisa ifanitshala kunye nokutya kunye namashishini ezonyango. Nangona kunjalo, kufuneka kuqatshelwe ukuba isalathiso somxholo webakala lokutya le-304 insimbi engenasici ingqongqo ngakumbi kuneyesiqhelo i-304 yensimbi engenasici. Umzekelo: inkcazo ngamazwe ngamazwe 304 steel stainless kukuba ikakhulu iqulethe 18% -20% chromium kunye 8% -10% nickel, kodwa ukutya-grade 304 steel stainless iqulethe 18% chromium kunye 8% nickel, ukuvumela ukuguquguquka ngaphakathi ethile. uluhlu kunye nokunciphisa umxholo weentsimbi ezahlukeneyo ezinzima. Ngamanye amazwi, i-304 insimbi engenasici ayithethi ukuba ibakala lokutya le-304 intsimbi engenasici.
Iindlela zokumakisha eziqhelekileyo kwimarike ziquka i-06Cr19Ni10 kunye ne-SUS304, apho i-06Cr19Ni10 ibonisa ngokubanzi imveliso esemgangathweni yelizwe, i-304 ibonisa ngokubanzi imveliso esemgangathweni ye-ASTM, kwaye i-SUS304 ibonisa imveliso esemgangathweni yaseJapan.
I-304 yinto eqhelekileyo-injongo yensimbi engenasici, esetyenziswa ngokubanzi ekwenzeni izixhobo kunye neengxenye ezifuna ukusebenza kakuhle okubanzi (ukumelana nokubola kunye nokubumba). Ukuze kugcinwe ukuxhathisa kwe-corrosion yendalo yensimbi engenasici, intsimbi kufuneka iqulethe ngaphezu kwe-18% ye-chromium kunye ne-nickel engaphezu kwe-8%. I-304 insimbi engenasici yinqanaba lensimbi engenasici eveliswe ngokuhambelana nomgangatho we-ASTM waseMelika.
Iimpawu ezibonakalayo:
Amandla okuqina σb (MPa) ≥ 515-1035
Amandla emveliso ngokwemiqathango σ0.2 (MPa) ≥ 205
Ubude δ5 (%) ≥ 40
Ukucutheka kwecandelo ψ (%)≥?
Ukuqina: ≤201HBW; ≤92HRB; ≤210HV
Ubuninzi (20℃, g/cm³): 7.93
Indawo yokunyibilikisa (℃): 1398~1454
Umthamo wobushushu obuthile (0~100℃, KJ·kg-1K-1): 0.50
Thermal conductivity (W·m-1·K-1): (100℃) 16.3, (500℃) 21.5
Ukwandiswa komlinganiso womgca (10-6·K-1): (0~100℃) 17.2, (0~500℃) 18.4
Ukuxhathisa (20℃, 10-6Ω·m2/m): 0.73
Imodyuli elastiki yobude (20℃, KN/mm2): 193
Ukuqulunqwa kwemveliso
Ingxelo
Umhleli
I-304 yensimbi engenasici, i-Ni element ekubunjweni kwayo ibaluleke kakhulu, echaza ngokuthe ngqo ukuxhatshazwa kwe-corrosion kunye nexabiso le-304 yensimbi engenasici.
Izinto ezibaluleke kakhulu kwi-304 ziyi-Ni kunye ne-Cr, kodwa azikhawulelwanga kwezi zinto zimbini. Iimfuno ezithile zichazwe yimigangatho yemveliso. Isigwebo esiqhelekileyo kwishishini kukuba nje ukuba umxholo we-Ni mkhulu kune-8% kwaye umxholo we-Cr mkhulu kune-18%, unokuthathwa njenge-304 yensimbi engenasici. Kungenxa yoko le nto ishishini libiza olu hlobo lwensimbi engenasici 18/8. Enyanisweni, imigangatho yemveliso efanelekileyo inemimiselo ecacileyo kakhulu ye-304, kwaye le migangatho yeemveliso inomahluko othile wensimbi engenasici yeemilo ezahlukeneyo. Oku kulandelayo yimigangatho yemveliso eqhelekileyo kunye novavanyo.
Ukugqiba ukuba ingaba impahla yi-304 yensimbi engenasici, kufuneka ihlangabezane neemfuno zento nganye kumgangatho wemveliso. Ngethuba nje umntu engahambelani neemfuno, ayikwazi ukubizwa ngokuba yi-304 insimbi engenasici.
1. I-ASTM A276 (iNgcaciso eMiselweyo yeeBha zentsimbi ezingaStainless kunye neeMilo)
304
C
Mn
P
S
Si
Cr
Ni
Imfuneko, %
≤0.08
≤2.00
≤0.045
≤0.030
≤1.00
18.0–20.0
8.0-11.0
2. I-ASTM A240 (i-Chromium kunye ne-Chromium-Nickel ye-Stainless Steel Plate, iPhepha, kunye ne-Strip ye-Pressure essels kunye ne-Aplikheshini Jikelele)
304
C
Mn
P
S
Si
Cr
Ni
N
Imfuneko, %
≤0.07
≤2.00
≤0.045
≤0.030
≤0.75
17.5–19.5
8.0–10.5
≤0.10
3. I-JIS G4305 (ipleyiti yentsimbi epholileyo eqengqelekayo, iphepha kunye nomcu)
I-SUS 304
C
Mn
P
S
Si
Cr
Ni
Imfuneko, %
≤0.08
≤2.00
≤0.045
≤0.030
≤1.00
18.0–20.0
8.0-10.5
4. I-JIS G4303 (Imivalo yentsimbi engatyiwayo)
I-SUS 304
C
Mn
P
S
Si
Cr
Ni
Imfuneko, %
≤0.08
≤2.00
≤0.045
≤0.030
≤1.00
18.0–20.0
8.0-10.5
Le migangatho mine ingasentla yeminye nje eqhelekileyo. Enyanisweni, kukho ngaphezu kwale migangatho ekhankanya i-304 kwi-ASTM kunye ne-JIS. Enyanisweni, umgangatho ngamnye uneemfuno ezahlukeneyo ze-304, ngoko ke ukuba ufuna ukugqiba ukuba ingaba i-material yi-304, indlela echanekileyo yokuyivakalisa kufuneka ibe kukuba iyahlangabezana neemfuno ze-304 kumgangatho othile wemveliso.
umgangatho wemveliso:
1. Indlela yokuleyibhile
I-American Iron and Steel Institute isebenzisa amadijithi amathathu ukulebhelisha amanqanaba ahlukeneyo asemgangathweni yentsimbi engenakutyiwa. Phakathi kwabo:
① I-Austenitic stainless steel ibhalwe ngamanani angama-200 kunye nama-300. Ngokomzekelo, ezinye iintsimbi eziqhelekileyo ze-austenitic zibhalwe nge-201, 304, 316 kunye ne-310.
② Iintsimbi ze-Ferritic kunye ne-martensitic zimelwe ngamanani angama-400.
③ I-Ferritic steel stainless ibhalwe nge-430 kunye ne-446, kunye ne-martensitic steel stainless ibhalwe nge-410, 420 kunye ne-440C.
④ I-Duplex (i-austenitic-ferrite), insimbi engenasici, imvula eyenza insimbi engenasici kunye ne-alloys ephezulu enomxholo wentsimbi engaphantsi kwe-50% idla ngokubizwa ngamagama e-patent okanye iimpawu zorhwebo.
2. Ukuhlelwa nokuhlelwa
1. Ukuhlelwa kunye nokuhlelwa: ① umgangatho weSizwe we-GB ② umgangatho woshishino YB ③ Umgangatho wendawo ④ umgangatho woshishino Q/CB
2. Ukuhlelwa: ① umgangatho wemveliso ② Umgangatho wokuPakisha ③ Indlela yomgangatho ④ Umgangatho osisiseko
3. Inqanaba lomgangatho (lahlulwe ngokwamanqanaba amathathu): Inqanaba le-Y: Inqanaba eliphezulu lamazwe ngamazwe Inqanaba le-I: Inqanaba jikelele lamazwe ngamazwe inqanaba H: Inqanaba eliphezulu lasekhaya
4. Umgangatho wesizwe
I-GB1220-2007 Imivalo yensimbi engenasici (inqanaba le-I) GB4241-84 Ikhoyili yentsimbi yentsimbi (inqanaba le-H)
I-GB4356-2002 I-coil yentsimbi ye-stainless welding (inqanaba le-I) GB1270-80 Umbhobho we-Stainless steel (Izinga)
GB12771-2000 Intsimbi edityanisiweyo yombhobho (inqanaba le-Y) GB3280-2007 ipleyiti ebandayo yentsimbi (inqanaba le-I)
I-GB4237-2007 ipleyiti eshushu yentsimbi (inqanaba le-I) GB4239-91 Ibhanti ebandayo yentsimbi (inqanaba le-I)
Ixesha lokuposa: Sep-11-2024