ʻO ke koho ʻana i nā mea hana hoʻāʻo mīkini no nā kāmaʻa hao hao e hoʻokō me ka maʻamau: ICS 45.060.20. Hōʻike kēia maʻamau e hoʻokaʻawale ʻia ka hoʻāʻo waiwai mechanical i ʻelua ʻāpana:
1.Tensile Test
E hoʻokō ʻia e like me nā ʻōlelo o ISO 6892-1: 2019. ʻO nā ana a me ka hana ʻana i ka maikaʻi o nā specimens tensile e hoʻokō i nā koi o ISO 185:2005.
2. Keʻano ho'āʻo paʻakikī
E hoʻokō ʻia e like me ISO 6506-1:2014. E ʻoki ʻia nā ʻano mea paʻakikī mai ka hapa haʻahaʻa o ka pahu hoʻāʻo i hoʻokaʻawale ʻia; inā ʻaʻohe pahu hoʻāʻo, e lawe ʻia hoʻokahi kāmaʻa kaʻa, 6mm - 10mm e hoʻolālā ʻia mai kona ʻaoʻao, a e ana ʻia ka paʻakikī ma 4 mau wahi hoʻāʻo, me ka waiwai awelika ka hopena hōʻike.
Kumu no ka hoao ana paakiki
ʻO ka ISO 6506-1: 2014 "Metallic Materials - Brinell Hardness Test - Part 1: Test Method" e wehewehe i ke kumu, nā hōʻailona a me nā wehewehe, nā mea hoʻāʻo, nā ʻano, nā kaʻina hana hoʻāʻo, ka maopopo ʻole o nā hopena a me ka hōʻike hōʻike no ka hōʻike paʻakikī Brinell o nā mea metala.
2.1 Ke Koho ʻana i nā Lako Hoʻāʻo: Brinell Hardness Tester (Ua ʻōlelo mua ʻia)
Pōmaikaʻi: Nui ka ʻāpana indentation, hiki ke hōʻike i ka paʻakikī holoʻokoʻa o ka mea hao hao (he ʻano ʻole paha ka hana o ka hao), a ʻoi aku ka ʻike o nā hopena.
He kūpono ia no ka hao hao oolea a haʻahaʻa (HB 80 – 450), e uhi piha ana i ka laulā paʻakikī o nā kāmaʻa hao hao.
He mea maʻalahi ka hana, a he haʻahaʻa ke koi no ka hoʻopau ʻana i ka ʻili o ka specimen (maʻamau Ra 1.6 - 6.3μm lawa).
2.2 Kumu o Brinell Hardness Test
Hiki ke hōʻuluʻulu ʻia ke kumumanaʻo e like me kēia: ʻO kahi pōpō paʻa paʻa (a i ʻole pōpō kila kinai ʻia) me ke anawaena o 10mm i kaomi ʻia i ka ʻili o ka specimen ma lalo o kekahi ikaika hoʻāʻo (e like me 3000kgf). Ma hope o ke ana ʻana i ke anawaena indentation, helu ʻia ka waiwai paʻakikī (HBW) e hōʻike i ka hiki o ka mea ke pale i ka deformation plastic. Aia kona pono nui i ka ʻelele ikaika o nā hopena, hiki ke hōʻike i nā ʻano paʻakikī macroscopic o ka mea. He ʻano hana maʻamau i hoʻohana nui ʻia i ka hoʻāʻo ʻana o nā mea metala.
2.3 Nā hōʻailona a me nā wehewehe ʻana o ka waiwai paʻakikī o Brinell
ʻO ka wehewehe nui o ka waiwai paʻakikī o Brinell (HBW) ʻo ia: ka lakio o ka ikaika hoʻāʻo (F) i ka ʻili o ka indentation (A), me ka ʻāpana o MPa (akā, ʻaʻole i kaha ʻia ka ʻāpana, a hoʻohana ʻia ka waiwai helu). Penei ke kumu helu helu: HBW=πD(D−D2−d2)2×0.102×F
Ma hea:
ʻO F ka ikaika hoʻāʻo (unit: N);
ʻO D ke anawaena indenter (unit: mm);
d ka anawaena awelika o ka indentation (unit: mm);
ʻO ka coefficient “0.102″ he kumu hoʻololi i hoʻohana ʻia no ka hoʻololi ʻana i ka ʻāpana ikaika hoʻāʻo mai kgf a i N (inā helu pololei ʻia ma N, hiki ke maʻalahi ke kumu).
Hiki ke ʻike ʻia ma ke ʻano ma lalo o ka ikaika hoʻāʻo like a me ke anawaena indenter, ʻoi aku ka liʻiliʻi o ke anawaena indentation, ʻoi aku ka ikaika o ka mea hiki ke pale i ka deformation plastik, a ʻoi aku ka kiʻekiʻe o ka waiwai paʻakikī Brinell; ʻo ka mea ʻē aʻe, ʻo ka haʻahaʻa o ka waiwai paʻakikī.
Wahi a nā hiʻohiʻona o nā kāmaʻa hoʻoheheʻe hao (hao hina hina), ʻo nā palena o ka hoʻāʻo paʻakikī Brinell e like me kēia:
Ka ikaika ho'āʻo (F): ʻO ka maʻamau, hoʻohana ʻia ka 3000kgf (29.42kN), a ʻo ka hōʻailona paʻakikī e pili ana ʻo "HBW 10/3000".
'Ōlelo Aʻo: Inā lahilahi ka specimen a palupalu paha ka mea, hiki ke hoʻololi i ka ikaika hoʻāʻo (e like me 1500kgf a i ʻole 500kgf) e like me ISO 6506-1: 2014, akā e hōʻike ʻia kēia ma ka hōʻike hōʻike.
Ka manawa hoʻouna: ʻAukake-26-2025
