42CrMo paipu kila maʻemaʻeno ka ultra-kiʻekiʻe ikaika kila, me ka ikaika kiʻekiʻe a me ka paʻakikī, hardenability maikaʻi, ʻaʻohe ʻike ʻia ʻana o ka brittleness, ka palena luhi kiʻekiʻe a me ka nui o ka hopena ma hope o ke kinai ʻana a me ka hoʻoulu ʻana, a me ka maikaʻi haʻahaʻa haʻahaʻa haʻahaʻa.
He mea kūpono ke kila no ka hana ʻana i nā ʻāpana plastik nui a me waena e koi ana i kekahi ikaika a paʻakikī.Kona ISO brand: 42CrMo4 e like me Iapana: scm440 e pili ana i ka German brand: 42CrMo4 e pili ana i ka American brand: 4140 mau hiʻohiʻona a me ka laulā o ka noi: ikaika kiʻekiʻe, hardenability kiʻekiʻe, paʻakikī maikaʻi, deformation liʻiliʻi i ka wā e kinai ana, a me ka ikaika kiʻekiʻe. ikaika hoʻomanawanui i ka wela kiʻekiʻe.Hoʻohana ʻia ia e hana i nā forgings me ka ikaika kiʻekiʻe a ʻoi aku ka nui o ka pauku pio a me ka huhū ma mua o ke kila 35CrMo, e like me nā mīkini nui no ka locomotive traction, supercharger transmission gears, hope shafts, connecting rods and spring clips me ka ukana nui, drill pipe joints a me ka lawaiʻa. nā mea hana no nā luawai hohonu aila ma lalo o 2000m, a me nā poni no nā mīkini kuʻi.
Kemika hui o 42CrMo seamless kila paipu: c: 0.38% - 0.45%, si: 0.17% - 0.37%, mn: 0.50% - 0.80%, cr: 0.90% - 1.20%, mo: 0.15% - 0.25%, Ni ⤉ 0.030%, P ≤ 0.030%, s ≤ 0.030%
ʻO ke kuleana o nā mea kemika like ʻole i nā paipu kila:
Kalapona (c):i ke kila, ʻoi aku ka kiʻekiʻe o ke kalapona, ʻoi aku ka kiʻekiʻe o ka ikaika a me ka paʻakikī o ke kila, akā e hoʻemi ʻia ka plasticity a me ka paʻakikī;ʻO ka mea ʻē aʻe, ʻoi aku ka haʻahaʻa o ke kalapona, ʻoi aku ka kiʻekiʻe o ka plasticity a me ka paʻakikī o ke kila, a e hoʻemi ʻia kona ikaika a me ka paʻakikī.
Silika (SI):hoʻohui ʻia i ke kila kalapona maʻamau e like me ka deoxidizer.Hiki i ka nui kūpono o ke silika ke hoʻomaikaʻi i ka ikaika o ke kila me ka ʻole o nā hopena maikaʻi ʻole i ka plasticity, ka paʻakikī o ka hopena, ka hana anu a me ka weldability.ʻO ka maʻamau, ʻo ka ʻike silika o ke kila pepehi ʻia he 0.10% - 0.30%, a ʻoi aku ka kiʻekiʻe o ka ʻike (a hiki i ka 1%) e hōʻemi i ka plasticity, ka paʻakikī o ka hopena, ka pale ʻana a me ka weldability o ke kila.
Manganese (MN):he deoxidizer nāwaliwali.Hiki i ka nui o ka manganese ke hoʻomaikaʻi maikaʻi i ka ikaika o ke kila, hoʻopau i ka mana o ka sulfur a me ka oxygen i ka brittleness wela o ke kila, hoʻomaikaʻi i ka hana wela o ke kila, a hoʻomaikaʻi i ke ʻano brittleness anu o ke kila, me ka hoʻohaʻahaʻa ʻole i ka plasticity a me ka hopena. ʻoʻoleʻa o ke kila.ʻO ka ʻike o ka manganese i ke kila kalapona maʻamau e pili ana i 0.3% - 0.8%.ʻO ka maʻiʻo kiʻekiʻe loa (a hiki i ka 1.0% - 1.5%) ke hana i ke kila brittle a paʻakikī, a hoʻemi i ka pale ʻana a me ka weldability o ke kila.
Chromium (CR):hiki iā ia ke hoʻomaikaʻi i ka ikaika a me ka paʻakikī o ke kila kalapona i ka moku'āina.E ho'ēmi i ka elongation a me ka ho'ēmi 'āpana.Ke ʻoi aku ka nui o ka chromium ma mua o 15%, e emi ana ka ikaika a me ka paʻakikī, a e hoʻonui ʻia ka elongation a me ka emi ʻana o ka wahi.ʻO nā ʻāpana i loaʻa ke kila chromium e maʻalahi ke loaʻa ka maikaʻi o ka hoʻoili ʻana i ka ʻili ma hope o ka wili ʻana.
ʻO ka hana nui o ka chromium i ke kila hoʻoheheʻe ʻia a hoʻohaʻahaʻa ʻia ʻo ia ka hoʻomaikaʻi ʻana i ka paʻakikī.Ma hope o ka hoʻopau ʻana a me ka hoʻoulu ʻana, ʻoi aku ka maikaʻi o nā waiwai mechanical piha o ke kila, a hiki ke hoʻokumu ʻia ka chromium i loko o ka carbide i ke kila carburized, i mea e hoʻomaikaʻi ai i ka pale ʻana o ka ʻili.ʻO Chromium kekahi o nā mea koʻikoʻi i ke kila kila, kahi e hoʻomaikaʻi nui ai i ka pale ʻana i ka ʻōpala, ka paʻakikī a me ke kūpaʻa ʻana o ke kila.
Molybdenum (MO):Hiki i ka molybdenum ke hoʻomaʻemaʻe i ka palaoa o ke kila, hoʻomaikaʻi i ka hardenability a me ka ikaika wela, a mālama i ka ikaika kūpono a me ke kū'ē ʻana i ke kiʻekiʻe kiʻekiʻe (ke koʻikoʻi lōʻihi a me ka deformation i ka wela kiʻekiʻe, i kapa ʻia ʻo creep).Hiki i ka hoʻohui ʻana i ka molybdenum i ke kila kila ke hoʻomaikaʻi i nā waiwai mechanical.Hiki iā ia ke pale i ka palupalu o ke kila kila i hana ʻia e ke ahi.
Sulfur:mea ʻino.E hana ia i ka embrittlement wela o ke kila a hoʻemi i ka plasticity, ka paʻakikī o ka hopena, ka ikaika luhi a me ka pale ʻana o ke kila.ʻAʻole ʻoi aku ka nui o ka sulfur o ke kila no ka hana maʻamau ma mua o 0.055%, ʻaʻole ʻoi aku ma mua o 0.050% i nā hale welded.Phosphorus: mea ʻino.ʻOiai hiki iā ia ke hoʻomaikaʻi i ka ikaika a me ka pale ʻana i ka ʻōpala, hiki iā ia ke hōʻemi koʻikoʻi i ka plasticity, ka paʻakikī o ka hopena, ka hana kuʻi anu a me ka weldability, ʻoi aku ka embrittlement anu i ka haʻahaʻa haʻahaʻa.Pono e mālama pono ʻia ka ʻike, ʻaʻole i ʻoi aku ma mua o 0.050%, ʻaʻole ʻoi aku ma mua o 0.045% i nā hale welded.Oxygen: mea ʻino.Hoʻoulu i ka brittleness wela.ʻO ka maʻamau, pono ka ʻike ma lalo o 0.05%.Nitrogen: hiki iā ia ke hoʻoikaika i ke kila, akā e hoʻemi nui i ka plasticity, ka paʻakikī, ka weldability a me ke anu ʻana o ke kila, a hoʻonui i ka ʻelemakule a me ke anuanu brittleness.ʻO ka maʻamau, pono ka ʻike ma lalo o 0.008%.
Ka manawa hoʻouna: ʻAukake-11-2022