35NCD16 cov ntaub ntawv yog ib qho nruab nrab carbon nickel chromium molybdenum steel feem ntau siv nyob rau hauv kev lag luam Fabkis aviation. Qhov no alloy steel belongs rau lub siab toughness thiab high-strength structural steel qeb. Cov hlau alloy no muaj cov qib siab ntawm Ni, Cr, thiab Mo alloying ntsiab lus, ua rau cov hlau tsis muaj zog austenite zoo heev. Cov hlau muaj zog hardenability, thiab cov qauv martensite thiab bainite tuaj yeem tau los ntawm huab cua quenching. Quenching thiab high-temperature tempering los yog low-temperature tempering tuaj yeem ua tiav ob theem siab zog lossis ultra-siab zog. Nws tuaj yeem ua tiav lub zog siab thiab muaj zog toughness ntawm cov ntu loj, nrog rau qhov txias txias hloov pauv kub thiab siab qaug zog.
35NCD16 steel yog siv rau hauv quenched thiab tempered (quenched + high-temperature tempered) los yog quenched + low-temperature tempered lub xeev, feem ntau yog rau kev tsim cov khoom tseem ceeb nrog cov ntoo khaub lig-section loj uas tiv taus qaug zog loads, xws li shafts, taub qab pob qij txha, tshwj xeeb bolts. , tsaws iav Cheebtsam, thiab lwm yam.
Txhawm rau kom siv tag nrho cov kev ua tau zoo ntawm 35NCD16 steel, nws yog ib qho tsim nyog yuav tsum ua raws li kev kho cua sov kom tsim nyog thiab ua haujlwm. Qhov no yuav suav nrog cov kauj ruam xws li annealing, normalizing, quenching, thiab tempering los kho nws cov microstructure, hardness, thiab mechanical zog. Tsis tas li ntawd, nws tseem yuav tsum tau ua tib zoo saib xyuas cov txheej txheem kev khiav hauj lwm kom raug thaum lub sij hawm ua thiab kev teeb tsa kom ntseeg tau tias qhov zoo thiab kev ntseeg siab ntawm fasteners.
Qib: 35NCD16
Cov qauv sib xws: NF A 35-556-1984
Hlau rau threaded fasteners rau structural thiab engineering lub hom phiaj
Classification: hlau alloy
35NCD16 Chemical Element Cov ntsiab lus (%)
C:0.32-0.39
Si:017-0.37
Mn:050-0.80
S: Tsawg dua lossis sib npaug rau 0.020
P: Tsawg dua lossis sib npaug rau 0.020
Cr:1. 60-2 00
Ni:3.60-4.10
Mo:025-0.45
35NCD16 txheej txheem kev kho cua sov:
- quenching cua kub: 850 degree; Txias tus neeg sawv cev: roj
- Tempering kub: 560 degree; Cooling agent: dej thiab roj
* Ceeb Toom: Qhov kev hloov pauv tau tso cai rau kev kho cua sov yog quenching ± 15 degree, qis kub tempering ± 20 degree, thiab high-temperature tempering ± 50 degree
35NCD16 Mechanical Properties:
* Ceeb Toom: Muaj qhov sib txawv ntawm kev ua tau zoo vim qhov sib txawv ntawm qhov sib txawv, raws li hauv qab no.
- Yield zog σ s (MPa): Ntau dua lossis sib npaug rau 980
- Tensile zog σ b (MPa): Ntau dua lossis sib npaug rau 1130
- Elongation tus nqi δ 5 (%): Ntau dua lossis sib npaug rau 10
- Kev txo qis ntawm thaj tsam piv (%): Ntau dua lossis sib npaug rau 50
- Kev cuam tshuam lub zog nqus (Aku2 / J): Ntau dua lossis sib npaug rau 71
* Ceeb toom: Round steel nrog ib txoj kab uas hla tsawg dua 18mm yuav tsis raug cuam tshuam rau lub zog kuaj.
- Annealing hardness: 269HBW
Kab lus no qhia txog cov tshuaj muaj pes tsawg leeg, cov khoom siv, tus nqi, hardness, ntom, ntau yam ntaub ntawv, thiab daim ntawv thov teb ntawm quenched thiab tempered alloy structural steels 35Cr2Ni4Mo, 35NCD16, thiab 36CrNiMo16, xws li round steel, square steel, ca steel, hexagonal steel, thiab lwm yam.
