Ss400, Q235, Q345 Spc Black Steel Kaarboon Birta Gariiradda Birta Birta Birta Birta Hr Gariiradda Birta Gariiradda Kulul
steet / gariiradda kulul-rogid ka soo dhammayn tir kulul ee la soo dhaafay bir kulul ka soo baxay iyada oo laminar socodka qaboojinta heerkulka dhigay, kaas oo ka kooban gariiradda winder ah, gariiradda birta ka dib qaboojinta, sida ay baahida kala duwan ee isticmaalayaasha, oo leh line dhammayn kala duwan (flat, toosinta, transverse ama goynta dhererka, kormeerka, miisaanka, baakadaha iyo calaamadda, iwm) Sababtoo ah alaabta birta duuban ee kulul waxay leeyihiin xoog sare, adkaansho wanaagsan, hab fudud oo sahlan iyo alxanka wanaagsan iyo guryaha kale ee aad u fiican, waxaa si ballaaran loo isticmaalaa dhismaha maraakiibta, baabuurta, buundada, dhismaha, mishiinka, markabka cadaadiska iyo warshadaha kale ee wax soo saarka.
| Darajo | Darajo | Halabuurka Kiimikada (%) | ||||
| Q215 | C | Mn | Si | S | P | |
| A | 0.09-0.15 | 0.25 ~ 0.55 | ≤0.3 | ≤0.05 | ≤0.045 | |
| B | ≤0.045 | |||||
| Q235 | A | 0.14-0.22 | 0.30-0.65 | ≤0.3 | ≤0.05 | ≤0.045 |
| B | 0.12-0.20 | 0.30 ~ 0.70 | ≤0.045 | |||
| C | ≤0.18 | 0.35 ~ 0.80 | - | ≤0.04 | ≤0.04 | |
| D | ≤0.17 | ≤0.035 | ≤0.035 | |||
| Q255 | A | 0.18-0.28 | 0.40 ~ 0.70 | ≤0.3 | ≤0.05 | ≤0.045 |
| B | ≤0.045 | |||||
| Q275 | 0.28 ~ 0.38 | 0.50-0.80 | ≤0.35 | ≤0.05 | ≤0.045 | |
Birta kaarboonku waa nooc caadi ah oo birta ah oo ah daawaha birta iyo kaarboonka. Waxay leedahay kaarboon sare oo kaarboon ah, barta dhalaalka hoose iyo adkeysi weyn marka la barbar dhigo birta aan la taaban karin.
Birta kaarboonku waa injineernimada iyo qalabka dhismaha ee loogu isticmaalo codsiyada warshadaha baaxad weyn, oo ay ku jiraan qaab-dhismeedka badda, dhirta tamarta, gaadiidka, farsamaynta kiimikada iyo soosaarka batroolka iyo sifaynta
∆ Walxaha duuban ee kulul ayaa ku sii qulqulaya foornada qabowga duuban iyo ka dib marka lagu daro aashitada.
∆ Dhammaan duubabka wax-shiidka waxaa lagu shiiday mashiinka wax shiididda saxda ah oo si sax ah loo shiiday ka dib marka shaqada ugu horreysa la sameeyo.
∆ Dhammaan go'yaasha waxaa lagu soo guray haamo kala duwan, go'yaalna waxaa lagu qallajiyaa mashiinka duubka ka hor inta aan la dirin.
∆ Xaashiyahaan mar kale ayaa la jeexjeexay ka dib waxaa loo diraa mashiinka toosan si ay u toosiyaan oo u guraan aashitada waxayna u diraan baakad iyadoo loo eegayo cabbirka iyo tayada.
∆ Baaritaanka waxaa lagu sameeyaa heerar kala duwan. Waayo-aragnimada shaqaaluhu waxay ilaalinayaan habka saxda ah ee habka guud ee gudaha iyada oo loo marayo duubista, ka saarista, qajaarka, daaweynta qashinka iwm.


