10# Dhuumaha birta ah ee aan kala go'a lahayn
Sharaxaad Gaaban:
Tilmaamaha wax soo saarka:
Dhexroorka dibadda ee tuubada birta 20-426
Dhumucda gidaarka birta ee 20-426
Halabuurka kiimikada:
● Lambarka 10
Kaarboon C: 0.07~0.14″ Silicon Si: 0.17 ~ 0.37 Manganese Mn: 0.35 ~ 0.65 Sulfur S: ≤0.04 Fosfooraska P: ≤0.35 chromium Cr: ≤0.15 Nickel Ni: 25≤0 Copper Ni: 25≤0
Hantida makaanikada:
Qalabka makaanikada ee lambarka 10 ee tuubada birta ah ee aan sinnayn: Xoog korriinka σb (MPa): ≥410(42) Xoog soo saarista σs (MPa): ≥245(25) elongation δ5 (%) : , engegnaanta: aan kululayn,≤156HB, cabbir muunad: 25mm.
Bir dhismeed kaarboon oo tayo sare leh:
Lambarka 10 ee tuubada birta ah ee birta ah kuma jiraan walxo kale oo alloy ah (marka laga reebo walxaha haraaga ah) marka laga reebo kaarboon (C) curiye iyo xaddi silikoon (Si) oo deoxidation ah (guud ahaan aan ka badnayn 0.40%), manganese (Mn) (guud ahaan maaha in ka badan 0.80%, ilaa 1.20%) walxo alloy ah.
Birta noocan oo kale ah waa inay lahaataa isku-dhafka kiimikada iyo sifooyinka farsamada labadaba.Waxa ku jira baaruud (S) iyo fosfooraska (P) guud ahaan waa la xakameeyey wax ka hooseeya 0.035%.Haddii lagu xakameynayo wax ka hooseeya 0.030%, waxaa loo yaqaannaa birta tayada sare leh, iyo "A" waa in lagu daraa fasalka ka dib, sida 20A;Haddii P lagu xakameeyo ka hooseeya 0.025% S lagu xakameynayo ka hooseeya 0.020%, waxaa loo yaqaannaa bir tayo sare leh oo dheeraad ah, iyo "E" waa in lagu daraa fasalka ka dib si loo muujiyo farqiga.Walxaha kale ee daawaynta ah ee lagu keeno birta alaabta ceeriin, sida chromium (Cr), nikkel (Ni), copper (Cu), iwm., content Cr≤0.25%, Ni≤0.30%, Cu≤0.25%.Qaar ka mid ah noocyada manganese (Mn) ayaa ka kooban ilaa 1.40%, oo loo yaqaan birta manganese.
Tirada
