35CrMo alloy steel yeeb nkab chaw tsim tshuaj paus chaw muag khoom
35CrMo yog tus naj npawb ntawm cov qauv hlau alloy (alloy quenched thiab tempered steel), uas yog siv los tsim cov khoom tseem ceeb hauv ntau lub tshuab muaj kev cuam tshuam, khoov thiab torsion thiab siab load. Kev sib koom ua ke digital code ntawm 35CrMo alloy cov qauv hlau (alloy quenched thiab tempered steel) yog a30352, thiab tus qauv tswj hwm yog GB / t3077-2015
35crm ua
35CrMo (2 nplooj ntawv)
Ltalis: 35 crmo4
NPE: 34 crmo 4
Sweden: 2234
Txhua hnub tus qauv: scm432 / scrm3
Nws yog siv los tsim cov khoom tseem ceeb hauv ntau cov cav tov bearing cuam tshuam, khoov thiab torsion thiab siab load, xws li herringbone iav, crankshaft, rauj pas nrig, txuas pas nrig thiab fasteners ntawm steel dov zeb, lub ntsiab ncej thiab qag ntawm chav turbine cav, cav kis tau tus mob qhov chaw, loj lub cev muaj zog ncej, perforator nyob rau hauv roj av machinery, boiler bolts nrog ua hauj lwm kub qis dua 400 ℃, ceev nrog ua hauj lwm kub qis dua 510 ℃, siab siab seamless tuab phab ntsa conduit (kub 450 ~ 500 ℃, tsis muaj corrosive nruab nrab) nyob rau hauv tshuaj machinery ; Nws kuj tseem tuaj yeem hloov 40crni rau kev tsim cov khoom siv thauj khoom siab, lub cav turbine cav rotor, ntu loj iav, txhawb nqa ncej (inch tsawg dua 500mm), thiab lwm yam; Cov txheej txheem cov khoom siv, cov kav dej, cov khoom siv vuam, thiab lwm yam.
Siv los ua qhov tseem ceeb ntawm cov khoom siv ua haujlwm hauv kev thauj khoom siab, xws li kis tau tus mob ntawm cov tsheb thiab cav; Rotor, lub ntsiab ncej, hnyav load kis ncej thiab loj seem ntawm chav turbine generator.
Cov pa roj carbon C: 0.32 ~ 0.40
Silicon Si: 0.17 ~ 0.37
0.40 ~ 0.70 hli
Sulfur s: tso cai cov ntsiab lus seem ≤ 0.035
Phosphorus P: tso cai cov ntsiab lus seem ≤ 0.035
Cr: 0.80 ~ 1.10 hli
Nickel: tso cai cov ntsiab lus seem ≤ 0.30
Copper Cu: tso cai cov ntsiab lus seem ≤ 0.30
Mo: 0.15 ~ 0.25 hli
Tensile zog σ b (MPa): ≥985 (100)
Yield zog σ s (MPa): ≥835 (85)
Elongation δ 5 (%): ≥12
Txo thaj tsam ψ (%): ≥45
Impact zog Akv (J): ≥ 63
Kev cuam tshuam toughness tus nqi α kv (J / cm²): ≥78(8)
Hardness: ≤ 229hb
Qauv loj: qauv dawb paug yog 25mm
Kev kho cua sov specification thiab metallographic qauv
Kev kho cua sov specification: quenching 850 ℃, roj txias; Tempering 550 ℃, dej txias, roj txias.
Qib steel: 35CrMo
Qauv blank size / mm: 25
Kev kho cua sov | quenching | cua sov kub / ℃ | xub qu:850
Kev kho cua sov | quenching | cua sov kub / ℃ | thib ob quenching: --
Kev kho cua sov | quenching | coolant: yog '
Kev kho cua sov | tempering | cua sov kub / ℃: 550
Kev kho cua sov | tempering | coolant: dej, roj
Mechanical zog | Tensile zog σ b / MPa | ≥: 980
Mechanical zog | yield point σ s/MPa | ≥: 835
Mechanical zog | elongation δ 5(%)|≥: 12
Mechanical zog | nto shrinkage ψ(%)| ≥: 45
Mechanical zog | cuam tshuam nqus zog Akv / J | ≥: 63
Lub xeev hardness HBS | ≥ 229
Kev xa khoom: kev xa khoom hauv kev kho cua sov (normalizing, annealing lossis high temperature tempering) los yog tsis muaj kev kho cua sov, thiab cov xwm txheej xa khoom yuav tsum tau qhia hauv daim ntawv cog lus.
