ʻO Rockwell Hardness Scale HRA HRB HRC HRD

Ua haku ʻia ka pālākiō paʻakikī ʻo Rockwell e Stanley Rockwell i ka makahiki 1919 e loiloi wikiwiki i ka paʻakikī o nā mea metala.

(1) HRA

① ʻO ke ʻano a me ke kumu hoʻāʻo: · Hoʻohana ka hoʻāʻo ʻo HRA i ka indenter cone daimana e kaomi i loko o ka ʻili waiwai ma lalo o ka haʻawe o 60 kg, a hoʻoholo i ka waiwai paʻakikī o ka mea ma ke ana ʻana i ka hohonu indentation. ② Nā ʻano mea pili: · ʻO ka mea kūpono no nā mea paʻakikī loa e like me ka cemented carbide, ceramics a me ke kila paʻakikī, a me ke ana ʻana o ka paʻakikī o nā mea pā a me nā uhi. ③ Nā hiʻohiʻona hoʻohana maʻamau: · Ka hana ʻana a me ka nānā ʻana i nā mea hana a me nā ʻano. · Ka ho'āʻo paʻakikī o nā mea hana ʻoki. · Ka mana maikaʻi o ka paʻakikī o ka uhi ʻana a me nā mea pā lahilahi. ④ Nā hiʻohiʻona a me nā pōmaikaʻi: · Ke ana wikiwiki: Hiki i ka ho'āʻo paʻakikī HRA ke loaʻa nā hopena i ka manawa pōkole a kūpono no ka ʻike wikiwiki ʻana ma ka laina hana. · Ka pololei kiʻekiʻe: Ma muli o ka hoʻohana ʻana i nā indenters daimana, loaʻa nā hopena hoʻāʻo kiʻekiʻe a me ka pololei. ·Versatility: Hiki iā ia ke hoʻāʻo i nā mea like ʻole o nā ʻano like ʻole a me nā ʻano nui, me nā papa lahilahi a me nā uhi. ⑤ Nā memo a i ʻole nā ​​palena: · Hoʻomākaukau laʻana: Pono ka ʻili o ka hāpana e palahalaha a maʻemaʻe e hōʻoia i ka pololei o nā hopena ana. · Kaohi mea: ʻAʻole kūpono i nā mea palupalu loa no ka mea hiki i ka indenter ke paʻi nui i ka hāpana, e hopena i nā hopena ana kūpono ʻole. Ka mālama ʻana i nā lako: Pono e hoʻopaʻa ʻia a mālama mau ʻia nā mea hoʻāʻo e hōʻoia i ka pololei a me ke kūpaʻa.

(2)HRB

① Keʻano a me ke kumu hoʻāʻo: · Hoʻohana ʻia ka hoʻāʻo paʻakikī HRB i ka indenter pōpō kila 1/16-inihi e kaomi i loko o ka ʻili o ka mea ma lalo o kahi haʻahaʻa o 100 kg, a ua hoʻoholo ʻia ka waiwai paʻakikī o ka mea ma ke ana ʻana i ka hohonu indentation. ② Nā ʻano mea pili: · Pili i nā mea me ka paʻakikī paʻakikī, e like me ke keleawe keleawe, nā alumini alumini a me ke kila māmā, a me kekahi mau metala palupalu a me nā mea non-metallic. ③ Nā hiʻohiʻona hoʻohana maʻamau: · Ka hoʻomalu maikaʻi ʻana i nā ʻāpana metala a me nā paipu. · ʻO ka hoʻāʻo ʻana i ka paʻakikī o nā metala non-ferrous a me nā alloys. · Ka hoʻāʻo ʻana i nā mea hana i ka hana a me nā ʻoihana kaʻa. ④ Nā hiʻohiʻona a me nā mea maikaʻi: · Nui o ka hoʻohana ʻana: E pili ana i nā mea metala like ʻole me ka paʻakikī waena, ʻoi aku ka maikaʻi o ke kila māmā a me nā metala non-ferrous. · Ka ho'āʻo maʻalahi: He maʻalahi a wikiwiki ke kaʻina hana ho'āʻo, kūpono no ka ho'āʻo wikiwiki i ka laina hana. · Nā hualoaʻa paʻa: Ma muli o ka hoʻohana ʻana i ka indenter pōpō kila, ʻoi aku ka paʻa a me ka hoʻihoʻi hou ʻana i nā hopena hoʻāʻo. ⑤ Nā memo a i ʻole nā ​​palena: · Hoʻomākaukau laʻana: Pono ka ʻili o ka hāpana e maʻalahi a palahalaha e hōʻoia i ka pololei o nā hopena ana. · Ka palena palena o ka paʻakikī: ʻAʻole pili i nā mea paʻakikī a palupalu paha, no ka mea, ʻaʻole hiki i ka indenter ke ana pololei i ka paʻakikī o kēia mau mea. · Ka mālama ʻana i nā lako: Pono e hoʻopaʻa ʻia a mālama mau ʻia nā mea hoʻāʻo e hōʻoia i ka pololei a me ka hilinaʻi o ke ana.

(3)HRC

① ʻO ke ʻano a me ke kumu hoʻāʻo: · Ke hoʻohana nei ka HRC hardness test i kahi indenter cone daimana e kaomi i loko o ka ʻili waiwai ma lalo o ka haʻawe o 150 kg, a ʻo ka waiwai paʻakikī o ka mea i hoʻoholo ʻia ma ke ana ʻana i ka hohonu indentation. ② Nā ʻano mea e pili ana: · ʻOi aku ka maikaʻi no nā mea ʻoi aku ka paʻakikī, e like me ke kila paʻakikī, carbide cemented, mea kila a me nā mea metala ʻoi aku ka paʻakikī. ③ Nā hiʻohiʻona hoʻohana maʻamau: · ʻO ka hana ʻana a me ka hoʻokele maikaʻi ʻana i nā mea hana ʻoki a me nā poni. · Ka ho'āʻo paʻakikī o ke kila paʻakikī. ʻO ka nānā ʻana i nā mīkini, nā bearings a me nā ʻāpana mīkini paʻakikī ʻē aʻe. ④ Nā hiʻohiʻona a me nā pono: · Kiʻekiʻe kiʻekiʻe: ʻO ka HRC hardness test he kiʻekiʻe kiʻekiʻe a me ka hoʻihoʻi hou ʻana, a kūpono no ka hoʻāʻo ʻana i ka paʻakikī me nā koi koʻikoʻi. · Ke ana wikiwiki: Hiki ke loaʻa nā hopena ho'āʻo i ka manawa pōkole, kahi kūpono no ka nānā wikiwikiʻana i ka laina hana. · Ke noi ākea: E pili ana i ka hoʻāʻo ʻana i nā ʻano mea paʻakikī kiʻekiʻe, ʻoi aku ka nui o ke kila wela a me ke kila mea hana. ⑤ Nā memo a i ʻole nā ​​palena: · Hoʻomākaukau laʻana: Pono ka ʻili o ka hāpana e palahalaha a maʻemaʻe e hōʻoia i ka pololei o nā hopena ana. Nā palena waiwai: ʻAʻole kūpono i nā mea palupalu loa, no ka mea, hiki i ka cone daimana ke kaomi nui i loko o ka hāpana, e hopena i nā hopena ana kūpono ʻole. Mālama i nā mea hana: Pono nā mea ho'āʻo i ka calibration a me ka mālama mau e hōʻoia i ka pololei a me ka paʻa o ke ana.

(4) HRD

① ʻO ke ʻano hoʻāʻo a me ka loina: · Hoʻohana ʻia ka hoʻāʻo paʻakikī HRD i kahi indenter cone daimana e kaomi i loko o ka ʻili waiwai ma lalo o ka haʻawe o 100 kg, a ʻike ʻia ka waiwai paʻakikī o ka mea ma ke ana ʻana i ka hohonu indentation. ② Nā ʻano mea e pili ana: · Kūpono nui no nā mea me ka ʻoi aku ka paʻakikī akā ma lalo o ka laulā HRC, e like me kekahi mau mea kila a me nā mea ʻoi aku ka paʻakikī. ③ Nā hiʻohiʻona hoʻohana maʻamau: · Ka mana maikaʻi a me ka hoʻāʻo paʻakikī o ke kila. · ʻO ka hoʻāʻo ʻana i ka paʻakikī o nā mea hoʻohui paʻa paʻakikī. · ʻO ka hoʻāʻo ʻana i nā mea hana a me ka mold, ʻoi aku ka nui o nā mea me ka laulā o ka paʻakikī. ④ Nā hiʻohiʻona a me nā pōmaikaʻi: · Haʻawe haʻahaʻa: Ke hoʻohana nei ka pālākiō HRD i kahi haʻahaʻa haʻahaʻa (100 kg) a kūpono i nā mea me ka laulā o ka paʻakikī. · Kiʻekiʻe ka hoʻihoʻi hou ʻana: Hāʻawi ka indenter cone daimana i nā hopena hoʻāʻo paʻa a hiki ke hana hou. · Hoʻohana maʻalahi: E pili ana i ka hoʻāʻo ʻana i ka paʻakikī o nā ʻano mea like ʻole, ʻoi aku ka nui ma waena o ka laulā HRA a me HRC. ⑤ Nā memo a i ʻole nā ​​palena: · Hoʻomākaukau laʻana: Pono ka ʻili o ka hāpana e palahalaha a maʻemaʻe e hōʻoia i ka pololei o nā hopena ana. Nā palena waiwai: No nā mea paʻakikī a palupalu paha, ʻaʻole paha ʻo HRD ke koho kūpono loa. Ka mālama ʻana i nā lako: Pono nā mea hoʻāʻo i ka calibration a me ka mālama mau ʻana e hōʻoia i ka pololei a me ka hilinaʻi o ke ana.