Tayada China Hot Rolled Flat Bar Steel
| Darajooyinka | Darajo | Halabuurka kiimikada % | ||||
| C | Mn | Si | S | P | ||
| Q235 | A/B | 0.12-0.22 | 0.30-0.65 | ≤0.35 | ≤0.045 | ≤0.045 |
| Darajooyinka | C% (t≤16mm) | Mn% | P% | S% | N | Cu | CEV② (t≤40mm) |
| S235JR | ≤0.17 | ≤1.40 | ≤0.035 | ≤0.035 | ≤0.012 | ≤0.55 | ≤0.35 |
| S275JR | ≤0.21 | ≤1.50 | ≤0.035 | ≤0.035 | ≤0.012 | ≤0.55 | ≤0.40 |
| Darajooyinka | C | Mn | P | S |
| SS400 | --- | ---- | ≤0.050 | ≤0.050 |
Tilmaamaha alaabta gaarka ah.Dhumucdiisuna waa 8-50mm, width 150-625mm, dhererka 5-15m, iyo sifooyinka alaabta si dhow u kala fog yihiin si ay u daboolaan baahida dadka isticmaala, oo waxaa loo isticmaali karaa halkii saxan dhexdhexaad ah, iyada oo aan goyn, oo si toos ah welded karaa.
Dusha sare ee alaabtu waa dhalaalaya oo nadiif ah.Habka hoos u dhigista cadaadiska sare ee biyaha ayaa la isticmaalaa mar labaad.
Labada dhinac waa toosan, geesuhuna waa cad yihiin.Gudbinta labaad ee is-rog-rogid toosan oo qumman ayaa hubinaysa toosnaanta labada dhinac, geeso cad iyo tayada sare ee dhinacyada.
Miisaanka alaabadu waa sax, farqiga saddexda dhibcood iyo farqiga heerka isku midka ah ayaa ka fiican kan caadiga ah ee saxanka birta;alaabtu waa mid siman oo toosan, qaabka saxankana waa mid wanaagsan.Duubista saxda ah waxay qabataa habka duubista joogtada ah, gacanta tooska ah ee tooska ah si toos ah kontoroolka tooska ah si loo hubiyo in aysan jirin wax dhejis ah oo bir ah iyo bir jiiditaan la'aan, saxnaanta cabbirka sare ee badeecada, kala duwanaanshaha dulqaadka, farqiga u dhexeeya seddexda dhibcood, farqiga darajada isku midka ah, qalooca sickle iyo cabirrada kale ayaa ka wanaagsan kan dhexdhexaadka ah. saxan, iyo toosnaanta saxanku waa wanaagsan yahay.xiirid qabow qabow, saxnaanta sare ee cabbirka dhererka.
Alaabta alaabtu waxay qabataa heerka qaranka, oo la mid ah saxan bir ah.Heerarka tayada iyo farsamada ayaa loo habeeyey oo loo soo saaray si waafaqsan heerka YB/T4212-2010 (Q345B/Q235B tixraac GB/T1591-94, siday u kala horreeyaan.
1. Bir guri dabaq ah oo kulul waa bir dheer, suurtogalna ah in la duubo oo leh qayb iskutallaab ah oo leydi ah oo si guud loo isticmaalo.Tilmaamaheeda waxaa lagu muujiyey milimitir oo dhumucdiisuna tahay * ballac.Birta fidsan waxaa loo isticmaali karaa birta, jaranjarooyinka, buundooyinka iyo dayrarka, iwm.(Waxyaabaha: Q215, Q235), heerka fulinta: GB704-1988 halkii GB704-83, heerkani wuxuu khuseeyaa dhumucda 3 ~ 60mm, width of 10 ~ 200mm, afar geesle cross-qaybta guud-ujeedada kulul-duubay guri guri. .Heerka gaarsiinta: birta fidsan waxaa lagu keenaa baararka toosan.Cabbirka: Bir fidsan ee dherer go'an iyo dhererka guys waxaa lagu bixiyaa miisaan aragtiyeed.
2. Bir fidsan oo la been abuurtay ayaa la been abuurtay saxan dheer oo bir ah oo leh qayb iskutallaab ah oo afar gees ah.Forging kaliya ma heli karto qaab gaar ah iyo cabbirka foornada, laakiin sidoo kale waxay si weyn u hagaajin kartaa ururka birta ee kabka, hagaajinta cufnaanta birta;waxay bedeli kartaa qaybinta ururka fiber, ka saar anisotropy, hagaajinta sifooyinka farsamada ee birta, si xoogga iyo adkaanta birta loo hagaajiyo;waxaana lagu farsamayn karaa caagtu waxay ku yar tahay birta sare iyo birta daawaha sare.Birta fidsan ee la been-abuuray ayaa inta badan ah birta daawaha oo tayo sare leh, oo inta badan loo isticmaalo ilo-biyoodyo, qalabyo iyo qaybo farsamo oo muhiim ah.Qeexitaanka birta fidsan ee la been abuuray waxaa lagu muujiyey mm dhumucdiisuna tahay * ballac, iyo qeexitaanku waa 20mm * 40mm ~ 160mm * 300mm.heerka fulinta: GB/T16761-1
Qaybta birta waa mid ka mid ah afarta nooc ee ugu waaweyn ee birta ah (taariko, tuubo, nooca, silig).Marka loo eego qaabka qaybta, qaybta birta qaybta waxay u qaybsan tahay qaybta fudud ee birta iyo qaybta adag ee birta (qaybta qaybta).Midda hore waxaa loola jeedaa bir laba jibaaran, bir wareegsan, bir fidsan, birta xagal, birta laba geesoodka ah, iwm.;kan dambe waxa uu tilmaamayaa I-beam, birta kanaalka, birta birta, birta daaqada, birta laabta, iwm.
Birta labajibbaaran - qaybta labajibbaaran ee birta, kulul-rogid iyo qabow-duuban;dhererka dhinaca birta labajibbaaran ee kulul 5-250mm;Dhererka dhinaca birta labajibbaaran ee qaboobaha 3-100mm.
Birta wareega ah - qaybta wareega ee birta, oo loo qaybiyo mid kulul, foorjari iyo qabow-soo jiidasho leh, dhexroor bir wareeg ah oo kulul 5-250mm, kaas oo 5-9mm inta badan loo isticmaalo sida alaabta ceeriin ee sawirida silig birta, oo loo yaqaan ul silig ;sida saxanka sahayda waxaa sidoo kale loo yaqaan gariiradda kulul-rogid.Bir wareeg ah oo la been abuurtay oo toosan ayaa ka sii dhumuc weyn, waxaana loo isticmaalaa sidii billet shafka ah.Dhexroor bir wareeg ah oo qabow 3-100mm, saxnaanta cabbir sare.
Birta xagasha - waxay u qaybsantaa laba nooc oo bir xagal siman ah iyo mid aan sinnayn.Tilmaamaha birta xagasha waxaa lagu muujiyay xajmiga dhererka dhinaca iyo dhumucda dhinaca.Caadi ahaan qeexitaannada birta xagasha ee la soo saaro waa No. 2-20, ie tirada sentimitir ee dhererka dhinaca.Sida No. 5 bir xagal siman oo tilmaamaysa dhererka dhinaca ee 5cm (50mm) birta xagasha.Tirada isku midka ah ee xaglaha waxay inta badan leeyihiin 2-7 dhumucood oo kala duwan.
Habka xisaabinta miisaanka birta fidsan
Birta fidsan: miisaanka halkii mitir = 0.00785 * dhumucdiisuna * balac dhinaceed
