40CrNiMo wela olokaa kila poepoe kaola

Hoʻohana ʻia ke kila 40CrNiMoA ma hope o ka hoʻopau ʻana a me ka hoʻoulu ʻana, a hoʻohana ʻia e hana i nā ʻāpana koʻikoʻi e koi ana i ka plasticity maikaʻi, ka ikaika kiʻekiʻe a me ka nui nui. No ka laʻana, hiki ke hoʻohana ʻia nā pahu hana koʻikoʻi i nā mīkini hana koʻikoʻi, nā pahu turbine me nā diameters ʻoi aku ka nui ma mua o 250 mm, nā ʻili, nā hoʻoili, nā mea hoʻopaʻa, crankshafts, gears, etc. °C.
Loaʻa ka 0.5% - 9% Cr a me 0.5% - 1% Mo a me ka haʻahaʻa ma lalo o 0.20% kalapona ʻo Chrome-Moly. ʻO 40CrNiMoA, 4340 a me SNCM439 nā mea hao hao chromoly haʻahaʻa mai nā kūlana like ʻole.

ʻO 4340 a me SNCM439 nā kūlana mai ʻAmelika a me Iapana. I ka hapanui o nā kūlana hiki ke lilo i mau mea ʻokoʻa, ke ʻole he palapala kūikawā a hoʻohana ʻia no ke kumu kūikawā. Loaʻa ko lākou ʻokoʻa i nā mea kemika, hōʻike ʻia nā kikoʻī penei:

Nā kūlana	GB	AISI	JIS
Mea waiwai	40CrNiMoA	4340	SNCM439（SNCM8）
C	0.37~0.44	0.38~0.43	0.36~0.43
ʻO Si	0.17~0.37	0.15~0.35	0.15~0.35
ʻO Mn	0.50~0.80	0.60~0.80	0.60~0.90
P	≤0.025	≤0.035	≤0.030
S	≤0.025	≤0.040	≤0.030
Cr	0.60~0.90	0.70~0.90	0.60~1.00
Ni	1.25~1.65	1.65~2.00	1.60~2.00
Mo	0.15~0.25	0.20~0.30	0.15-0.30

40CrNiMoA Alloy Steel Mechanical Pono

• Ka ikaika hana: ≥ 835 MPa
• Ka ikaika tensile: ≥ 980 MPa
• Elongation: ≥12%
• Laki o ka hoemi ana ma kahi: ≥55%
• ʻO ka ikehu hoʻopaʻa hopena: ≥ 78 J
• Material Brinell Hardness: ≤ 269 (Annealed a i ʻole ke kiʻekiʻe wela wela ke koʻokoʻo)
• Laʻana nui: 25mm

Hōʻike hoʻomaʻamaʻa wela

• ʻO ka wela wela hoʻonanea kinai mua: 850 °C (Quenchant-ʻaila)
• Ka wela wela: 600 °C (Quenchant– wai, aila)

Ua hoʻohana ʻia ma kahi e makemake ai i nā ʻāpana waiwai kūʻokoʻa kiʻekiʻe a me ka maikaʻi e like me ke koʻikoʻi koʻikoʻi, nā kumu, nā mea hana kaumaha, nā spindles, nā pine, nā studs, bolts, couplings, sprockets, pinions, torsion bars, connecting rods. Ua hoʻohana nui ʻia kēia mau kila kila kiʻekiʻe ma nā wahi e like me ka ʻoihana kemika petrol, kaʻa, nā lako mana mahu a me nā lawelawe wela kiʻekiʻe.