(1) ʻO ka ʻokoʻa nui ma waena o nā mea kila i hoʻohana ʻia no nā ʻāpana kaulahao ma ka home a me nā ʻāina ʻē i loko o nā pā kaulahao i loko a me waho.Pono ka hana o ka pā kaulahao i ka ikaika tensile kiʻekiʻe a me kekahi paʻakikī.Ma Kina, 40Mn a me 45Mn ka mea maʻamau no ka hana ʻana, a ʻaʻole hoʻohana pinepine ʻia ka 35 kila.ʻOi aku ka laulā o ka hui kemika o nā pā kila 40Mn a me 45Mn ma mua o nā kila S35C a me SAEl035 haole, a he 1.5% a 2.5% ka mānoanoa decarburization ma ka ʻili.No laila, ʻeha pinepine ka pā kaulahao i ka haki ʻana ma hope o ke kinai ʻana a me ka hoʻomaʻamaʻa ʻana.
I ka wā o ka ho'āʻo paʻakikī, haʻahaʻa ka paʻakikī o ka ʻili o ka pā kaulahao ma hope o ke kinai ʻana (emi iho ma mua o 40HRC).Inā pau kekahi mānoanoa o ka papa honua, hiki i ka paʻakikī ke piʻi aku ma mua o 50HRC, kahi e hoʻopilikia nui ai i ka ukana tensile haʻahaʻa o ke kaulahao.
(2) Hoʻohana maʻamau nā mea hana ʻē aʻe iā S35C a me SAEl035, a hoʻohana i nā kapuahi carburizing kāʻei hoʻomau ʻoi aku ka holomua.I ka wā o ka hoʻomaʻamaʻa wela, hoʻohana ʻia kahi lewa pale no ka mālama recarburization.Eia kekahi, hoʻokō ʻia ka mana kaʻina hana ma ka pūnaewele, no laila ʻaʻole hiki ke loaʻa nā kaulahao.Ma hope o ke kinai ʻana a me ka hoʻomaʻamaʻa ʻana, hiki mai ka haʻihaʻi a i ʻole ka paʻakikī o ka ʻili.
Hōʻike ka nānā ʻana i ka metallographic he nui ka nui o ka hale martensite e like me ka nila (ma kahi o 15-30um) ma ka ʻili o ka pā kaulahao ma hope o ke kinai ʻana, ʻoiai ʻo ke kumu he ʻano martensite e like me ka strip-like.Ma lalo o ke kūlana o ka mānoanoa pāʻani kaulahao like, ʻoi aku ka nui o ka ukana tensile haʻahaʻa ma hope o ka hoʻoulu ʻana ma mua o nā huahana home.Ma nā ʻāina ʻē, hoʻohana mau ʻia nā papa mānoanoa 1.5mm a ʻo ka ikaika tensile e koi ʻia he> 18 kN, aʻo nā kaulahao kūloko e hoʻohana maʻamau i nā papa mānoanoa 1.6-1.7mm a ʻo ka ikaika tensile e koi ʻia he> 17.8 kN.
(3) Ma muli o ka hoʻomaikaʻi mau ʻana o nā koi no nā ʻāpana kaulahao kaʻa, hoʻomau nā mea hana hale a me nā haole i ka hoʻomaikaʻi ʻana i ke kila i hoʻohana ʻia no nā pine, nā lima lima a me nā wili.ʻO ka haʻahaʻa haʻahaʻa haʻahaʻa a me ke kūpaʻa ʻana o ke kaulahao e pili ana i ke kila.Ma hope o ka koho ʻana o nā mea hana hale a me nā ʻāina ʻē i ke kila 20CrMnTiH ma ke ʻano he pine ma kahi o 20CrMnMo, ua hoʻonui ʻia ka ukana tensile kaulahao e 13% a i 18%, a ua hoʻohana nā mea hana haole i ke kila SAE8620 e like me ke pine a me nā mea lima.Pili pū kēia me kēia.Ua hōʻike ka hoʻomaʻamaʻa ʻana ma ka hoʻomaikaʻi ʻana i ke āpau kūpono ma waena o ka pine a me ka lima, ka hoʻomaikaʻi ʻana i ke kaʻina hana wela a me ka lubrication, hiki ke hoʻomaikaʻi maikaʻi ʻia ke kūpaʻa a me ka ukana tensile o ke kaulahao.
(4) Ma nā ʻāpana kaulahao kaʻa kaʻa, ʻo ka pā loulou i loko a me ka lima lima, ka pā loulou waho a me ka pine i hoʻopaʻa pū ʻia me kahi kūpono kūpono, ʻoiai ʻo ka pine a me ka lima he kūpono kūpono.ʻO ke kūpono ma waena o nā ʻāpana kaulahao he mana nui i ka pale ʻana a me ka haʻahaʻa tensile haʻahaʻa o ke kaulahao.E like me nā manawa hoʻohana like ʻole a me nā ukana pōʻino o ke kaulahao, ua māhele ʻia i ʻekolu mau pae: A, B a me C. Hoʻohana ʻia ka papa A no ka lawe kaumaha, ka wikiwiki a me ka nui;Hoʻohana ʻia ka papa B no ka hoʻouna maʻamau;Hoʻohana ʻia ka papa C no ka hoʻololi ʻana i nā mea hana maʻamau.No laila, ʻoi aku ka paʻakikī o nā koi hoʻonohonoho ma waena o nā ʻāpana kaulahao Class A.
Ka manawa hoʻouna: Sep-08-2023