Shandong Weichuan Metal Products Co., Ltd.

42CrMo paipu kila paipu mea hana palapala kuai

ʻO ka wehewehe pōkole:

Ke kumu o 42CrMo seamless steel paipu: ʻo ke kila kūikawā no ke alahaka ʻo "42CrMo", ʻo ke kila kūikawā no ke kāʻei kaʻa ʻo "42CrMo", a ʻo ke kila kūikawā no ka moku kaomi ʻo "42CrMo".


Huahana Huahana

Huahana Huahana

wehewehe

ʻO ke kumu o 42CrMo paipu kila ʻole: ʻo ke kila kūikawā no ke alahaka ʻo "42CrMo", ʻo ke kila kūikawā no ke kāʻei kaʻa ʻo "42CrMo", a ʻo ke kila kūikawā no ka moku kaomi ʻo "42CrMo". Hoʻomaikaʻi kēia ʻano kila i nā waiwai mechanical o ke kila ma ka hoʻoponopono ʻana i ka ʻike kalapona (c). No laila, e like me ka maʻiʻo kalapona, hiki ke hoʻokaʻawale ʻia kēia ʻano kila i: ke kila kalapona haʻahaʻa - ʻoi aku ka nui o ke kalapona ma lalo o 0.25%, e like me 10 a me 20 kila; Medium carbon steel - ʻo ka maʻiʻo kalapona ma waena o 0.25 ~ 0.60%, e like me 35 a me 45 kila; Ke kila kalapona kiʻekiʻe - ʻoi aku ka nui o ka ʻike kalapona ma mua o 0.60%. ʻAʻole hoʻohana mau ʻia kēia ʻano kila i ka hana ʻana i nā paipu kila. ʻO ke kila 42CrMo he kila ikaika kiʻekiʻe loa me ka ikaika kiʻekiʻe a me ka paʻakikī, ka paʻakikī maikaʻi, ʻaʻohe mea ʻike ʻia i ka brittleness, ka palena luhi kiʻekiʻe a me ka nui o ka hopena ma hope o ke kinai ʻana a me ka hoʻomaʻamaʻa ʻana, a me ka paʻakikī o ka hopena haʻahaʻa haʻahaʻa. He mea kūpono ke kila 42CrMo no ka hana ʻana i nā ʻāpana plastik nui a me ka nui e pono ai ka ikaika a me ka paʻakikī. Paʻakiki: annealed, 147 ~ 241hb, 42CrMo

Mechanical waiwai o 42CrMo

Ka ikaika wili σ b (MPa): ≥1080(110)

Ka ikaika hua σ s (MPa): ≥930(95)

Elongation δ 5 (%): ≥12

Hoemi o ka āpana ψ (%): ≥45

Hiki ke hoʻoikaika kino Akv (J): ≥ 63

Waiwai oolea hopena α kv (J/cm2): ≥78(8)

Paʻakiki: ≤ 217hb

I mea e hoʻomaikaʻi ai i ke ola lawelawe o ka make i ʻoi aku ma mua o 800000 mau manawa, hiki ke hoʻokō ʻia ke ʻano paʻakikī o ka quenching a me ka haʻahaʻa haʻahaʻa haʻahaʻa no ke kila paʻa mua. I ka hoʻopau ʻana, e hoʻomaʻamaʻa ʻia ma 500-600 ℃ no 2-4 mau hola, a laila mālama ʻia ma 850-880 ℃ no kekahi manawa (ma ka liʻiliʻi o 2 mau hola), hoʻoluʻu ʻia i ka aila i 50-100 ℃ a hoʻomaha ʻia e ka ea. ʻO ka paʻakikī ma hope o ke kinai ʻana hiki ke hiki i 50-52hrc. I mea e pale ai i ka hakihaki ʻana, e hoʻomāmā koke ʻia ma 200 ℃. Ma hope o ka hoʻoulu ʻana, hiki ke mālama ʻia ka paʻakikī ma luna o 48hrc. ʻO ke kaʻina hana lapaʻau ʻauʻau ʻauʻau ʻauʻau ʻole o 42CrMo kila. Hiki ke kiʻi ʻia ka papa carbide e ka ʻauʻau wai ʻauʻau ʻauʻau ʻauʻau ʻauʻau ʻole o ka 42CrMo kila.

1. ʻO ka hui kalapona vanadium, ʻo ka papa carburized he ʻano like ʻole, ka hoʻomau maikaʻi a me ka compactness, ka mānoanoa like ʻole, ka hale paʻa, ka microhardness kiʻekiʻe a me ke kūpaʻa lole kiʻekiʻe, a ʻoi aku ka maikaʻi o ka paʻakikī o ka ʻili, ke kūpaʻa a me ke kūpaʻa adhesion.

2.ʻOi aku ka kiʻekiʻe o ka solubility o VC i ka austenite ma mua o ka ferrite. Me ka emi o ka mahana, VC precipitates mai ferrite, ka mea e hoʻoikaika ai i ka huila a hoʻomaʻemaʻe i ka palaoa, a hōʻike ka papa hui i ka paʻakikī kiʻekiʻe. 42CrMo kila no ke kalapona kiʻekiʻe a me ka chromium ledeburite kila kiʻekiʻe, me ka kiʻekiʻe carbide maʻiʻo, helu no ma kahi o 20%, a pinepine puunaue unevenly i ke kāʻei a me ka pūnaewele, me ka koʻikoʻi segregation. Eia nō naʻe, paʻakikī ka mālama ʻana i ka wela maʻamau e hoʻololi i ka hoʻokaʻawale ʻana o ka carbide, kahi e hoʻopilikia nui ai i nā waiwai mechanical o ke kila a me ke ola lawelawe o ka make. ʻO ke ʻano a me ka nui o nā carbide ka hopena nui i nā waiwai o ke kila. ʻO ka mea nui, ʻoi aku ka maikaʻi o nā carbide kihi ʻoi nui i ka matrix kila a lilo pinepine i kumu o ka haʻihaʻi luhi. No laila, he mea pono e hoʻololi i ka forging o ka maka olokaa kila, piha i ka eutectic carbide e hana ia lakou maikai a me ka like pu ana, a me ka fiber kukuluia ua puunaueia a puni ka lua a non directionally, I mea e hoʻomaikaʻi i ka transverse mechanical waiwai o ke kila. .

I ka wā e hana ai, e hoʻonāukiuki ʻia ka billet a huki ʻia mai nā ʻaoʻao like ʻole no nā manawa he nui, a hana ʻia e ke ʻano "ʻelua māmā a me hoʻokahi kaumaha", ʻo ia hoʻi, e hahau māmā ʻia ka billet i ka hoʻomaka ʻana o ka forging e pale ai i ka haki. Hiki ke paʻi nui ʻia i ka mahana waena o 980 ~ 1020 ℃ e hōʻoia i ka haki ʻana o nā carbide. ʻAʻole hana ʻia ke kila 42CrMo, a hoʻopaʻa ʻia ka hoʻonā paʻa paʻa hoʻomaʻemaʻe pālua, ʻo ia hoʻi, ka lua preheating ma kahi o 500 ℃ a me 800 ℃ a me ka lāʻau hoʻonā paʻa ma 1100 ~ 1150 ℃, Quenching me ka aila wela a i ʻole isothermal quenching, kiʻekiʻe wela wela ma 750 ℃, hoʻomehana ma 960 ℃ ma hope o ka mīkini a me ka hoʻomaʻamaʻa wela hope ma hope o ka hoʻoluʻu aila hiki ke hoʻomaʻemaʻe i nā carbide, nā ʻaoʻao a me nā kihi a me ka hoʻomaʻemaʻe i ka palaoa.


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