He aha nā ana paʻakikī ʻo Brinell lāua ʻo Rockwell

I ke ao o ka metallurgy a me ka ʻepekema mea, ʻo ka paʻakikī kekahi o nā waiwai koʻikoʻi loa i hoʻohana ʻia e loiloi i ka maikaʻi a me ka hana o kahi mea. Ana nā hoʻāʻo paʻakikī i ke kūʻē ʻana o kahi mea i ka deformation, scratching, a i ʻole indentation. Ma waena o nā ʻano hoʻāʻo paʻakikī he nui, ʻo kaHoʻāʻo Paʻakikī Brinell (BHN)a me kaHoʻāʻo Paʻakikī Rockwell (HR)ʻo ia nā mea i hoʻohana nui ʻia ma nā noi ʻoihana.

Kōkua kēia mau hoʻāʻo i nā mea hana, nā ʻenekinia, a me nā hui hoʻomalu maikaʻi e hōʻoia i ka hoʻokō ʻana o nā metala i ka ikaika e pono ai, ke kūpaʻa ʻana i ka ʻaʻahu, a me ke kūpaʻa no kā lākou hoʻohana i manaʻo ʻia. Ma kēia ʻatikala, e ʻimi mākou i nā ana paʻakikī ʻo Brinell lāua ʻo Rockwell, pehea lākou e hana ai, a me kahi i hoʻopili ʻia ai.

Ke Hoʻomaopopo nei i ka Paʻakikī i nā Mea Hana

ʻAʻole ka paʻakikī he waiwai hoʻokahi akā he hui pū ʻana o ka ikaika, ka ductility, a me ke kūpaʻa ʻana i ka ʻaʻahu. ʻOi aku ka kiʻekiʻe o ke kūpaʻa o kahi mea paʻakikī i ka ʻaʻahu a me ka deformation, e kūpono ai no nā wahi kiʻekiʻe e like me nā mea hana, nā ʻāpana mīkini, a me nā ʻāpana kūkulu.

Eia nō naʻe, pono e kaulike ʻia ka paʻakikī me ka paʻakikī. Hiki i kahi mea paʻakikī loa ke palupalu, ʻoiai ʻo kahi mea palupalu loa e hiki ke komo koke. ʻO ia ke kumu he mea nui nā ʻano ana pololei e like me Brinell lāua ʻo Rockwell.

ʻO ka hoʻāʻo paʻakikī Brinell (BHN)

ʻIke laulā

ʻO ka Brinell Hardness Test, i hoʻomohala ʻia e ka ʻenekinia Suedena ʻo Johan August Brinell i ka makahiki 1900, ʻo ia kekahi o nā ʻano hoʻāʻo paʻakikī kahiko loa. Hoʻohana nui ʻia ia no nā mea me nā ʻano palaoa ʻino a ʻaʻole like, e like me nā mea i hoʻoheheʻe ʻia a me nā mea i hoʻoheheʻe ʻia.

Kumumanaʻo o ka Hana

Ma ka hoʻāʻo Brinell:

  1. Ua kaomi ʻia kahi kila paʻakikī a i ʻole ka pōpō tungsten carbide (maʻamau he 10 mm ke anawaena) i loko o ka ʻili o ka mea.

  2. Hoʻopili ʻia kahi ukana kaumaha (ma waena o 500 a me 3000 kgf) no kekahi manawa kikoʻī, maʻamau he 10 a 30 kekona.

  3. Hoʻohana ʻia kahi microscope e ana i ke anawaena o ke komo ʻana i waiho ʻia ma luna o ka ʻili.

  4. ʻO kaBHNua helu ʻia ka waiwai ma ka puʻunaue ʻana i ka ikaika i hoʻopili ʻia e ka ʻilikai o ke komo ʻana.

Nā Pōmaikaʻi

  • Kūpono no nā ʻili ʻinoʻino

  • Hiki ke ho'āʻo i nā ʻāpana nui a paʻa

  • Hāʻawi i ka paʻakikī awelika maikaʻi ma luna o kahi ʻāpana nui

Nā hemahema

  • Waiho i kahi indentation nui mau loa

  • ʻAʻole kūpono no nā mea lahilahi loa a paʻakikī loa paha

  • Pono ke ana ʻana o ka optical, hiki ke hoʻopau i ka manawa

Nā noi

  • Hao i hoʻolei ʻia

  • Nā mea hoʻohui alumini

  • Keleawe a me ke keleawe

  • Nā ʻāpana kila nui

ʻO ka hoʻāʻo paʻakikī Rockwell (HR)

ʻIke laulā

ʻO ka Rockwell Hardness Test, i hoʻomohala ʻia i ka hoʻomaka ʻana o ke kenekulia 20 e Hugh lāua ʻo Stanley Rockwell, ʻo ia kekahi o nā ʻano ana paʻakikī maʻamau i ka ʻoihana hou. ʻOi aku ka wikiwiki a me ka maʻalahi ma mua o Brinell a ʻaʻole pono ke ana ʻana o ka optical.

Kumumanaʻo o ka Hana

Ma ka hoʻāʻo ʻana o Rockwell:

  1. Ua kaomi ʻia kahi pōpō kila a tungsten carbide paha a i ʻole kahi mea hoʻoheheʻe daimana conical (Brale) i loko o ka mea.

  2. Hoʻopili mua ʻia kahi ukana liʻiliʻi (ʻo 10 kgf ka maʻamau) e hoʻopaʻa i ka penetrator.

  3. Hoʻopili ʻia kahi ukana nui (ʻo ia hoʻi he 60, 100, a i ʻole 150 kgf) no kahi manawa i hoʻonohonoho ʻia.

  4. ʻO ka hohonu o ke komo ʻana ma lalo o ke kaumaha nui, i hoʻohālikelike ʻia me ka hohonu ma hope o ke kaumaha liʻiliʻi, e hoʻoholo ai i ka waiwai paʻakikī.

  5. Heluhelu pololei ʻia ka hopena mai ka pālākiō paʻakikī ʻo Rockwell me ka ʻole o ka helu hou ʻana.

Nā Unahi Rockwell

  • ʻO Rockwell A (HRA)– ʻŌne daimana, 60 kgf; no nā uhi paʻakikī lahilahi

  • Rockwell B (HRB)– pōpō 1/16-'īniha, 100 kgf; no nā metala palupalu e like me nā mea hoʻohui keleawe

  • ʻO Rockwell C (HRC)– Kone daimana, 150 kgf; no nā kila paʻakikī

Nā Pōmaikaʻi

  • Wikiwiki a maʻalahi hoʻi e hana

  • Heluhelu kikohoʻe pololei, ʻaʻohe helu e pono ai

  • Hoʻomākaukau ʻili liʻiliʻi loa

  • Kūpono no nā wahi hana

Nā hemahema

  • ʻAʻole paha e hōʻike ka indentation liʻiliʻi i nā waiwai nui o nā mea me nā ʻano coarse

  • Kaupalena ʻia no nā ʻāpana lahilahi loa a liʻiliʻi paha i kekahi mau hihia

Nā noi

  • kila paʻakikī

  • Kila kohu ʻole

  • Alumini

  • Keleawe

  • Mea kila

ʻO Brinell vs. Rockwell: Nā ʻokoʻa koʻikoʻi

Hiʻona Hoʻāʻo Paʻakikī Brinell (BHN) Hoʻāʻo Paʻakikī Rockwell (HR)
Mea komo pōpō 10 mm (kila a tungsten carbide paha) Pōpō a i ʻole kone daimana
Hoʻouka 500–3000 kgf 60–150 kgf (kaumaha nui)
Ana ʻana Ke ana ʻana o ka optical o ke anawaena indentation Ana hohonu pololei
Ka wikiwiki Lohi, pono ka microscope Heluhelu wikiwiki a pololei hoʻi
ʻOi loa no Nā metala ʻili paʻakikī, nā mea i hoʻoheheʻe ʻia Hoʻāʻo hana, nā kila paʻakikī
Ka nui o ke komo ʻana Nui aʻe Liʻiliʻi

Ke Koʻikoʻi o ka Hoʻāʻo Paʻakikī ma ka ʻOihana

Hoʻomaopopo ka hoʻāʻo ʻana i ka paʻakikī e hoʻokō nā mea i nā koi hana no kā lākou hoʻohana i manaʻo ʻia. Kōkua nā hoʻāʻo ʻo Brinell lāua ʻo Rockwell:

  • E hōʻoia i ka maikaʻi o ka mea ma mua o ka hana ʻana

  • E nānā i ka paʻakikī ma hope o ka mālama ʻana i ka wela

  • E hōʻoia i ke kūlike i nā ʻāpana hana

  • E loiloi i ke kūpaʻa ʻana o ka ʻaʻahu

Eia kekahi laʻana, ma ka ʻoihana hoʻolako kila kila, nā ʻoihana e like mesakysteelhilinaʻi ʻia i nā ana paʻakikī pololei e hōʻoia i ka hoʻokō ʻana o kā lākou huahana i nā kūlana honua no ka hana mechanical a me ke kūpaʻa.

Ke koho ʻana i ke ʻano hoʻāʻo kūpono

ʻO ke koho ʻana ma waena o nā ana paʻakikī ʻo Brinell lāua ʻo Rockwell e pili ana i kekahi mau kumu:

  1. ʻAno Mea– ʻOi aku ka maikaʻi o nā metala ʻili lahilahi no Brinell, ʻoiai ʻo nā mea paʻakikī ʻili lahilahi e hoʻohana pinepine iā Rockwell.

  2. Ka nui o ka ʻāpana– ʻOi aku ka maʻalahi o ka hoʻāʻo ʻana i nā ʻāpana nui a paʻa me Brinell; ʻoi aku ka maikaʻi o nā ʻāpana liʻiliʻi no Rockwell.

  3. Pololei i koi ʻia– Hāʻawi ʻo Rockwell i nā hopena wikiwiki, akā hāʻawi ʻo Brinell i kahi waiwai awelika no nā mea heterogeneous.

  4. Ka wikiwiki o ka hana ʻana– ʻOi aku ka kūpono o Rockwell no nā wahi hana nui.

Nā Palena a me nā Mālama

ʻOiai he waiwai ka hoʻāʻo paʻakikī, he mau palena kona:

  • ʻAʻole hōʻike pololei nā waiwai paʻakikī i ka ikaika tensile a i ʻole ke kūpaʻa hopena.

  • Hiki i nā kūlana o ka ʻili ke hoʻopilikia i nā hopena; pono e maʻemaʻe a laumania nā ʻili.

  • He mea luku ke ʻano o nā hana indentation a waiho i kahi māka ma luna o ka mea.

He mea nui ka hoʻomaʻamaʻa kūpono ʻana i ka mea hoʻohana a me ka hoʻoponopono mau ʻana i nā lako hoʻāʻo no ka loaʻa ʻana o nā hopena hilinaʻi.

Nā Manaʻo Hope Loa

He kuleana koʻikoʻi ko nā ana paʻakikī ʻo Brinell lāua ʻo Rockwell i ka hoʻāʻo ʻana i nā mea hou. Loaʻa i kēlā me kēia ʻano hana kona mau ikaika, a ma nā ʻoihana he nui, hoʻohana ʻia nā mea ʻelua e hōʻoia i nā hopena. He kūpono ʻo Brinell no nā ʻili nui a ʻaʻole like a hāʻawi i ka waiwai paʻakikī awelika, ʻoiai ʻo Rockwell e hāʻawi i ka wikiwiki a me ka maʻalahi no nā laina hana.

No nā mea hoʻolako e like mesakysteel, me ka hoʻohana ʻana i ke ʻano hoʻāʻo paʻakikī kūpono e hōʻoiaʻiʻo ana e hana pololei ke kila kila, nā kila alloy, a me nā huahana metala ʻē aʻe e like me ka mea i manaʻo ʻia i nā noi koi. ʻAʻole wale ke ana ʻana o ka paʻakikī pololei e hōʻoiaʻiʻo i ka maikaʻi akā kūkulu pū i ka hilinaʻi me nā mea kūʻai aku ma nā ʻāpana kaʻa, aerospace, kūkulu ʻana, a me nā hana hana.

Ka manawa hoʻouna: Aug-13-2025