He maha ngā momo kōnae maitai, tae atu ki ngā kōnae a te kaiwhakatakoto, ngā kōnae kani, ngā kōnae hanga, ngā kōnae āhua motuhake, ngā kōnae kaihanga wati, ngā kōnae kaihanga wati motuhake, me ngā kōnae rakau. Ko te nuinga o ā rātou tikanga whakamātautau pakeke e tutuki ana i te paerewa o te ao ISO 234-2:1982 Ngā Kōnae Rino me ngā Rīpene — Wāhanga 2: Ngā Āhuatanga o te Tapahi.
E rua ngā tikanga whakamātautau e tohua ana e te paerewa o te ao: te tikanga pakeke o Rockwell me te tikanga pakeke o Vickers.
1. Mō te tikanga pakeke o Rockwell, ko te tauine Rockwell C (HRC) te tikanga e whakamahia whānuitia ana, ā, ko te pakeke e hiahiatia ana he teitei ake i te 62HRC. Mēnā he teitei te pakeke, ka taea hoki te whakamahi i te tauine Rockwell A (HRA) mō te whakamātautau, ā, ka whiwhihia te uara pakeke mā te hurihanga. Kaua te pakeke o te kakau o te kōnae (ko te horahanga e toru-haurima o te roa katoa mai i te pito o te kakau) e teitei ake i te 38HRC, ā, kaua te pakeke o te kōnae rakau e iti iho i te 20HRC.
2. Ka taea hoki te whakamahi i te whakamātautau pakeke Vickers mō te whakamātautau, ā, me whiwhi te uara pakeke e rite ana mā te hurihanga i muri i te whakamātautau. He pai te pakeke Vickers mō te whakamātautau i ngā kōnae maitai he paparanga angiangi, i muri rānei i te maimoatanga mata. Mō ngā kōnae maitai i rongoatia ki te maimoatanga wera mata, ki te maimoatanga wera matū rānei, me whakamātautau i tō rātou pakeke ki runga i te papa maeneene 5 mm ki te 10 mm te tawhiti mai i te kōnae whakamutunga i tapahia.
Me noho te pakeke o te pito niho i waenga i te 55 HRC me te 58 HRC, he mea e tika ana mō te whakamātautau mā te tikanga pakeke Vickers. Mena he tūranga tika, ka taea te whakanoho tika i te mea mahi ki runga i te papa mahi o te whakamātautau pakeke Vickers mō te whakamātautau. Heoi, kāore e taea te ine tika i te nuinga o ngā mea mahi; i roto i ēnei āhuatanga, me whakarite tuatahi ngā tauira o ngā mea mahi. Kei roto i te tukanga whakarite tauira ko te mīhini tapahi whakarewa, te mīhini huri me te whakakanapa whakarewa, me te mīhini whakairi whakarewa. Kātahi, ka whakatakotoria ngā tauira kua whakaritea ki runga i te papa mahi whakamātautau pakeke Vickers mō te whakamātautau.
Me mōhio ko te whakamātautau pakeke o te kakau o te kōnae ka taea anake te whakahaere ina oti te tukatuka i te mata kia tutuki ai ngā tikanga whakamātautau; haunga ngā whakaritenga o tēnei paerewa, me tutuki hoki te whakamātautau pakeke o ngā kōnae maitai i ngā whakaritenga o te ISO 6508 me te ISO 6507-1.
Wā tuku: Hepetema-24-2025
