1.2746 Tool Steel Round Bar
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1.2746 Tool Hlau Round Bar

C(%) : 0 41-0.49
Si(%) : 0 15-0.35
Mn(%) : 0 60-0.80
P(%) : Max 0.025

Xa kev nug

Khoom Taw qhia

Tuag steel round bar 1.2746 45NiCrMoV16-6 Txias Work Tool Steel Round Bar Nqe

Tsim los ntawm Standards

Hlau No.	DIN
1.2746	45NiCrMoV16-6

Chemical Composition (mass feem) (wt. feem pua)

C (%)	Si (%)	Mn (%)	P (%)	S (%)	Cr (%)	Ni (%)	Mo (%)	V (%)
0.41-0.49	0.15-0.35	0.60-0.80	Max 0.025	Max 0.020	1.40-1.60	3.80-4.20	0.73-0.85	0.45-0.55

Kev piav qhia
Tshwj xeeb txias ua hauj lwm cuab yeej steel, huab cua los yog roj hardenable nrog siab tshaj toughness.

Daim ntawv thov
Forging cov cuab yeej, tuag ntawm txhua hom, cov duab thiab qhov ntau thiab tsawg, kub forging thiab nias cov cuab yeej rau hlau thiab hlau. Pwm, bushings, piercers, thiab lwm yam.

Lub cev muaj zog (avarage qhov tseem ceeb) ntawm ambient kub
Modulus ntawm elasticity [103 x N / mm2]: 210
Qhov ceev [g/cm3]: 7.86

Mos Annealing
Tshav kub rau 610-850 degree, txias maj mam hauv qhov cub. Qhov no yuav tsim qhov siab tshaj plaws Brinell hardness ntawm 295.

Kev ntxhov siab
Kev ntxhov siab los tshem tawm cov kev ntxhov siab ntawm machining yuav tsum tau ua los ntawm cua sov kom kwv yees. 650 degree, tuav rau 1-2 teev ntawm tshav kub, ua raws li cua txias. Qhov kev ua haujlwm no yog ua los txo qis kev sib txawv thaum kho cua sov.

Hardening
Harden los ntawm qhov kub ntawm 880-910 degree tom qab cua los yog roj quenching los yog sov da dej quenching 180-220 degree . Hardness tom qab quenching yog 56 HRC.

Tempering
Tempering kub: Saib cov ntaub ntawv hauv qab no.

Tempering Kub (degree) vs. Hardness (HRC)