1.How yog lub siab lub zog thiab hardness ntawm Alloy Steel txias - rolled steel kav rov qab?
Muaj zog nthuav tawm cov kev cuam tshuam ntawm cov ntsiab lus:
Ntxiv CR (chromium) txhim kho cov hlau lub zog thiab hardness, mo (mn (mnaces} kub lub zog, thiab mn (manganese) loj nce tensile lub zog. Piv txwv li:
40CR (muaj 0.8% {{4 4}}} 1.1% cr) tuaj yeem ua kom muaj zog thiab tempering (quenching
42Crmo (muaj 0.9% - 1.2% mo) muaj cov txiaj ntsig ntev tshaj 30 mpa) tsis muaj tshuaj yej yas. Txias-dov superposition muaj zog ntxiv:
Cov nyhuv "ua haujlwm ua haujlwm nyuaj" ntawm cov khaub thuas txias ua rau lub hmoov nplej sab hauv kom tau cov kev coj ua kom zoo raws li cov kev coj ua kom nruj. Lub saum npoo hardness ntawm 40cr steel tom qab muab txias thiab tsis muaj kwv yees li ntawm no 250, thaum 20 # carbon steel tom qab Dov txias tsuas yog HB 140-180. Yog li ntawd, Alloy Steel Txias-Rolled Tubes muaj cov coj zoo dua (rau cov zog thiab Shafts) thiab kos tsis kam.
2.Yog li cas cov neeg qaug zog tsis kam ntawm Alloy Steel txias - rolled steel kav?
Hauv cov tshuab hloov khoom (xws li ntxaiv thiab cov khoom ua txhuas) thiab xws li excavator hydraulic rods, ua rau nws raug kev ua tsis tiav vim tsis muaj zog tawg. Alloy Steel txhim kho kev nkees ua kom dhau los ntawm cov hau kev hauv qab no:
Hais xws li mo thiab ni txo cov hlau lub ntsiab lus rhiab, txo cov kev pib ua kom muaj kev ntxhov siab.
Lub siab - precision nto (ra 0.2 {{{}}}}}}} 3} piv rau kub-dov lub raj ntawm tib cov khoom. Piv txwv li, 20cr Txias-dov hlab (carburized) siv nyob rau hauv kev tsheb ciav hlau tsheb tuaj yeem tiv thaiv kev sib tsoo hauv lub cav tsheb ntau tshaj li 10 × 10 lub voj voog ntawm cov roj carbon hlau.
3.Qhov yog cov kub ua hauj ntawm alloy steel?
Cov tub ntxhais alloying ntsiab: CR (txhim kho siab - kub oxidation tsis kam), thiab ti (tiv thaiv mob intergranular).
Cov ntawv thov raug thiab tshwm sim:
15Cro (muaj 1.0% - 1.} {} {} Lub zog ({ Yog li ntawd, lawv tau siv dav hauv boiler supertheatre leeg, chav ntsuas cua tshuab (hauv kev lag luam hluav taws xob)
321 Stainless hlau (muaj ti) txias - rolled ntawm elebranular muaj tsis muaj kev pheej hmoo ntawm kev lag luam kub hauv lub aerospace kev lag luam.
4.How corrosion resistant yog alloy steel?
Txawm hais tias Alloy Steel cov txheej txheem tiv thaiv tsis zoo li cov hlau tsis muaj txiaj ntsig zoo rau cov roj carbon hlau, ua rau nws siv cov pa hluav taws tsawg dua.
20cripe - rolled yeeb (muaj 0.7% {}}}}}} tus nqi ntawm 20 # carbon steel nyob rau hauv huab cua noo. Nws tuaj yeem siv rau cov txheej txheem txheem sib xyaw ua ke ntawm cov tshuab sab nraum zoov (xws li ntauwd crane bushings) yam tsis muaj qhov xav tau rau cov kev kho mob ntau zaus corrosion.
16mn (Q345b, muaj 1.2%-}}}} paab cov khoom siv hluav taws xob tsis kam rau siab dua cov kav dej tsis muaj zog.
5.Qhov dab tsi yog qhov ntsuas kub qis ntawm alloy steel?
Nickel -}}} Cov hlau nplaum ntxiv tag nrho (xws li 12crni3A) nthuav qhia qhov qis tshaj plaws {}} kub nruj. Lawv tswj cov khoom siv zoo (elongation ntau dua los yog sib npaug rau 15%) ntawm qhov kub me me "10℃lossis} Piv txwv li, cov khaub noom cold-dov steel ntawm cov roj piploc hauv cov khoom siv txias sab qaum teb