Baarka fidsan ee MS Flat Bar/ Birta Kaarboonka ee Flat Bar/Birta kulul ee duuban ee Flat Bar
1. Tilmaamaha alaabta gaarka ah.Dhumucdiisuna waa 8 ~ 50mm, ballaciisu waa 150-625mm, dhererkiisu waa 5-15m, iyo sifooyinka alaabta waa cufan, kaas oo buuxin kara baahida dadka isticmaala.Waxaa loo isticmaali karaa si toos ah halkii saxanka dhexe iyada oo aan la jarin oo si toos ah ayaa loo alxan karaa.
2. Dusha sare ee alaabta ayaa siman.Habka nadiifinta biyaha ee cadaadiska sare waxaa loo isticmaalaa laba jeer habka si loo hubiyo in dusha sare ee birta ay tahay mid siman oo nadiif ah.
3. Dhinacyadu waa toosan yihiin, lafahana waa cad yihiin.Labada duub ee toosan ee duubista dhamaystirka waxay xaqiijinayaan toosnaanta labada dhinac, geeso cad, iyo tayada dusha sare ee dhinacyada.
4. Cabbirka alaabtu waa mid sax ah, farqiga u dhexeeya saddex dhibcood, isla heerka farqiga ayaa ka fiican heerka saxanka birta;alaabtu waa toosan qaabkuna waa wanaagsan yahay.Dhamaystirka duubista waxay qabataa habka duubista joogtada ah iyo kontoroolka otomaatiga ah ee looper si loo hubiyo in aan bir la tuulin oo aan birta la jiidin.Alaabtu waxay leedahay saxnaanta cabbirka sare.Kala duwanaanshaha dulqaadka, farqiga saddexda dhibcood, faraqa falin isku mid ah, qalooca sickle, iyo cabbirro kale ayaa ka wanaagsan saxanka dhexdhexaadka ah.Darajo wanaagsan.Goynta-xiirid qabow, saxnaanta sare ee cabbirka dhererka.
5. Maaddada alaabadu waxay qabataa heerka qaranka, kaas oo la mid ah saxanka birta.Heerarka tayada iyo farsamada waxaa loo habeeyey iyadoo loo eegayo heerarka YB/T4212-2010 (Q345B/Q235B tixraac GB/T1591-94 iyo GB/T700-06, siday u kala horreeyaan)
Alloy No | Darajo | Qayb (%) | ||||
C
| Mn
| S
| P
| Si
| ||
Q235
| B
|
0.12-0.20 |
0.3-0.7 | ≤0.045 |
≤0.045
|
≤0.3
|
Alloy No | Darajo | Barta xoogga wax-soo-saarka (Mpa) | Xoog xajin (Mpa) | Kordhinta jabka ka dib (%) | ||||||
Dhumucda (mm) | Dhumucda (mm) | |||||||||
≤16 | >16--40 | >40--60 | >60--100 | ≤16 | >16--40 | >40--60 | >60--100 | |||
≥ | ≥ | |||||||||
Q235 |
B |
235 |
225 |
215 |
205 |
375--500 | 26 |
25 |
24 |
23 |