304 simbi isina tsvina chinhu chakajairika pakati pesimbi isina tsvina, ine density ye7.93 g/cm³; iyo inonziwo 18/8 simbi isina tsvina muindastiri, zvinoreva kuti ine zvinopfuura 18% chromium uye kupfuura 8% nickel; inopesana nekupisa kwakanyanya kwe800 ℃, ine mashandiro akanaka ekugadzirisa uye kuomarara kwakanyanya, uye inoshandiswa zvakanyanya mumaindasitiri uye maindasitiri ekushongedza fenicha uye maindasitiri ezvekudya nekurapa. Nekudaro, zvinofanirwa kucherechedzwa kuti indekisi yemukati yechikafu-giredhi 304 simbi isina tsvina yakanyanya kuomarara kupfuura iyo yakajairwa 304 simbi isina tsvina. Semuyenzaniso: tsananguro yepasi rese ye304 simbi isina simbi ndeyekuti inonyanya kuve ne18% -20% chromium uye 8% -10% nickel, asi chikafu-giredhi 304 simbi isina tsvina ine 18% chromium uye 8% nickel, inobvumira kushanduka mukati meimwe. kureba uye kudzikisira zviri mukati meakasiyana masimbi anorema. Mune mamwe mazwi, 304 simbi isina tsvina haisati iri chikafu-giredhi 304 simbi isina tsvina.
Nzira dzakajairwa dzekumaka pamusika dzinosanganisira 06Cr19Ni10 uye SUS304, iyo 06Cr19Ni10 inowanzoratidza kugadzirwa kwenyika, 304 kazhinji inoratidza ASTM yakajairwa kugadzirwa, uye SUS304 inoratidza Japan yakajairwa kugadzirwa.
304 isimbi isina simbi isina chinangwa, iyo inoshandiswa zvakanyanya mukugadzirwa kwemidziyo uye zvikamu zvinoda kuita kwakanaka kwakazara (kupokana uye kuumbwa). Kuti uchengetedze kusimba kwemararamiro ekuramba kwesimbi isina tsvina, simbi yacho inofanira kunge iine zvinopfuura 18% chromium uye kupfuura 8% nickel. 304 Stainless simbi igiredhi resimbi isina tsvina inogadzirwa zvinoenderana neAmerican ASTM standard.
Zvinhu zvenyama:
Tensile simba σb (MPa) ≥ 515-1035
Conditional goho simba σ0.2 (MPa) ≥ 205
Elongation δ5 (%) ≥ 40
Sectional shrinkage ψ (%)≥?
Kuoma: ≤201HBW; ≤92HRB; ≤210HV
Density (20℃, g/cm³): 7.93
Kunyungudika (℃): 1398 ~ 1454
Kupisa chaiko (0~100℃, KJ·kg-1K-1): 0.50
Thermal conductivity (W·m-1·K-1): (100℃) 16.3, (500℃) 21.5
Linear yekuwedzera coefficient (10-6·K-1): (0~100℃) 17.2, (0~500℃) 18.4
Kuramba (20℃, 10-6Ω·m2/m): 0.73
Longitudinal elastic modulus (20 ℃, KN/mm2): 193
Kuumbwa kwechigadzirwa
Report
Editor
Kune 304 simbi isina tsvina, iyo Ni element mukuumbwa kwayo yakakosha zvikuru, iyo inosarudza zvakananga kupikisa kwekuora uye kukosha kwe304 simbi isina tsvina.
Zvinhu zvakanyanya kukosha mu304 ndiNi uye Cr, asi hazvigumiri pazvinhu zviviri izvi. Izvo zvinodiwa zvakananga zvinotsanangurwa nezviyero zvechigadzirwa. Mutongo wakajairika muindasitiri ndewekuti chero bedzi iyo Ni yemukati yakakura kupfuura 8% uye iyo Cr yemukati yakakura kupfuura 18%, inogona kutorwa se304 simbi isina tsvina. Ichi ndicho chikonzero iyo indasitiri inodaidza rudzi urwu rwesimbi isina tsvina 18/8 simbi isina tsvina. Muchokwadi, iwo akakodzera zvigadzirwa zviyero zvine akajeka mirau ye304, uye izvi zvigadzirwa zviyero zvine mimwe misiyano yesimbi isina tsvina yemhando dzakasiyana. Izvi zvinotevera zvimwe zvakajairika zvigadzirwa zviyero uye bvunzo.
Kuti uone kana chinhu chiri 304 simbi isina tsvina, inofanirwa kusangana nezvinodiwa zvechimwe nechimwe chinhu muyero yechigadzirwa. Chero bedzi munhu asingasviki zvinodiwa, haigoni kunzi 304 simbi isina tsvina.
1. ASTM A276 (Standard Specification yeStainless Steel Bars uye Shapes)
304
C
Mn
P
S
Si
Cr
Ni
Zvinodiwa,%
≤0.08
≤2.00
≤0.045
≤0.030
≤1.00
18.0–20.0
8.0-11.0
2. ASTM A240 (Chromium neChromium-Nickel Stainless Steel Plate, Sheet, uye Strip for Pressure essels uye yeGeneral Applications)
304
C
Mn
P
S
Si
Cr
Ni
N
Zvinodiwa,%
≤0.07
≤2.00
≤0.045
≤0.030
≤0.75
17.5–19.5
8.0–10.5
≤0.10
3. JIS G4305 (ndiro inotonhora-yakakungurutswa yesimbi isina tsvina, pepa uye tambo)
SUS 304
C
Mn
P
S
Si
Cr
Ni
Zvinodiwa,%
≤0.08
≤2.00
≤0.045
≤0.030
≤1.00
18.0–20.0
8.0-10.5
4. JIS G4303 (Stainless simbi mbariro)
SUS 304
C
Mn
P
S
Si
Cr
Ni
Zvinodiwa,%
≤0.08
≤2.00
≤0.045
≤0.030
≤1.00
18.0–20.0
8.0-10.5
Mipimo mina iri pamusoro apa ingori mimwe yemimwe yakajairika. Muchokwadi, kune akawanda kupfuura aya mazinga anotaura 304 muASTM neJIS. Asi izvo, chiyero chega chega chine zvinodiwa zvakasiyana zve304, saka kana iwe uchida kuona kuti chinhu chiri 304, nzira chaiyo yekuchiburitsa inofanira kunge ichizadzisa izvo 304 zvinodiwa mune chimwe chigadzirwa chiyero.
Product standard:
1. Nzira yekunyora
IAmerican Iron uye Steel Institute inoshandisa manhamba matatu kuisa magiredhi akasiyana-siyana esimbi isingabatike. Pakati pavo:
① Austenitic Stainless simbi yakanyorwa ne200 uye 300 nhamba dzakatevedzana. Semuenzaniso, mamwe akajairika austenitic simbi isina tsvina akanyorwa ne 201, 304, 316 uye 310.
② Ferritic uye martensitic simbi isina tsvina inomiririrwa ne400 akatevedzana manhamba.
③ Ferritic Stainless simbi yakanyorwa ne430 uye 446, uye martensitic Stainless simbi yakanyorwa ne410, 420 uye 440C.
④ Duplex (austenitic-ferrite), simbi isina tsvina, kunaya kwemvura kuomesa simbi isina tsvina uye alloys akakwira ane simbi isingasviki 50% anowanzo kupihwa nemazita epatent kana zviratidzo.
2. Classification uye magiredhi
1. Kudhirowa uye kupatsanurwa: ① Nyika yakajairika GB ② Indasitiri chiyero YB ③ Yemunharaunda mwero ④ Enterprise mwero Q/CB
2. Chikamu: ① Chigadzirwa chiyero ② Packaging standard ③ Nzira chiyero ④ Basic mwero
3. Chiyero chechiyero (chakakamurwa kuita nhanho nhatu): Y level: International advanced level I level: International general level H level: Domestic advanced level
4. Chiyero chenyika
GB1220-2007 Stainless simbi mbariro (I level) GB4241-84 Stainless simbi welding coil (H level)
GB4356-2002 Stainless simbi welding coil (I level) GB1270-80 Stainless simbi pombi (I level)
GB12771-2000 Stainless simbi welded pombi (Y level) GB3280-2007 Stainless simbi inotonhora ndiro (I level)
GB4237-2007 Stainless simbi inopisa ndiro (I level) GB4239-91 Stainless simbi inotonhora bhandi (I level)
Nguva yekutumira: Sep-11-2024