I roto i te umanga hanga, he mea nui te kounga o ngā rauemi mata ki te angitu o te hua whakamutunga. Ko te whakahaere kounga o ngā rauemi mata he raupapa tirotiro me ngā whakamātautau kua hangaia hei whakarite kia tutuki ngā rauemi i ngā whakaritenga me ngā paerewa e hiahiatia ana. Ka ruku hohonu tēnei tuhinga ki te tukanga tirotiro o ngā rauemi mata maha, tae atu ki te maitai Q195 me ngā maitai kore waikura pērā i te 201, 304 me te 316. Ka tūhuratia hoki e mātou te hiranga o te tirotiro i te whānui, te matotoru, te pakeke, me te mahi whakamātautau kume hei whakarite i te pono me te mahi a ēnei rauemi.

## Te Mārama ki ngā Rauemi Mata

Ko ngā rauemi mata ngā wāhanga matua e whakamahia ana i roto i te tukanga hanga. Kei roto i ngā rauemi mata ngā konganuku me ngā kirihou ki ngā mea whakahiato me ngā mea uku. I roto i ēnei, ko te maitai tētahi o ngā rauemi e whakamahia whānuitia ana nā tōna kaha, tōna roa me tōna ngāwari ki te whakamahi. He rerekē ngā momo maitai, pērā i te Q195 me ngā momo maitai kore waikura, he āhuatanga motuhake e pai ai mō ngā tono rerekē.

maitai Q195

He maitai waro-iti te Q195 e whakamahia ana i roto i te hanga waea, paipa, me ētahi atu wāhanga hanganga. E mōhiotia ana mō tōna ngāwari ki te whakarewa me te hanga, ā, he mea rongonui i roto i ngā ahumahi hanga me te hanga. Heoi, kia tutuki ai te maitai Q195 i ngā paerewa e tika ana, me tirotirohia te kounga.

### Ngā momo maitai kore waikura: 201, 304 me te 316

Ko te maitai kore waikura tētahi atu rauemi mata matua i roto i te umanga hanga, inā koa i roto i ngā umanga e hiahia ana kia ātete ki te waikura, pērā i te tukatuka kai, te rongoā, me ngā tono moana. Ko ngā momo maitai kore waikura e tino kitea ana ko te 201, 304, me te 316, he āhuatanga ahurei tō ia mea:

- **201 Kowiri tira**: E mōhiotia ana tēnei momo mō tōna ātete pai ki te waikura, ā, e whakamahia ana i ngā mahi e hiahiatia ana he ātete waikura taurite. He iti ake te utu i ērā atu kowiri tira, engari kāore pea e tino pai te mahi i roto i ngā taiao tino waikura.

- **Kowiri tira 304**: Ko tētahi tēnei o ngā momo kowiri tira e whakamahia whānuitia ana nā tōna ātete pai ki te waikura me ōna āhuatanga miihini pai. He mea whakamahi noa i roto i ngā taputapu kīhini, i ngā tukatuka kai, me ngā ipu matū.

- **Kowiri tira 316**: E mōhiotia ana mō tōna ātete tino pai ki te waikura, inā koa ki ngā pūhaumāota, e whakamahia whānuitia ana te kowiri tira 316 i roto i ngā mahi moana me ngā taiao e pāngia pinepine ana e ngā matū kino.

## Te Hiranga o te Whakahaere Kounga

He mea nui te whakahaere kounga o ngā rauemi mata kia tutuki ai ngā whakaritenga e hiahiatia ana e ngā rauemi e whakamahia ana i roto i te hanga. Kei roto i tēnei tukanga ētahi tirotiro me ngā whakamātautau matua, tae atu ki:

### 1. Tirohia te whānui me te matotoru

Ko te whānui me te matotoru o te rauemi mata ngā mea matua e pā ana ki te mahi a te hua whakamutunga. Hei tauira, mō ngā pereti maitai, mō ngā rau rino rānei, me rite te matotoru kia ōrite ai te kaha me te roa. Mā te rerekētanga ka arahi ki ngā ngoikoretanga o te hanganga, ka pakaru pea i te wā e whakamahia ana.

I te wā o te tirotiro, ka whakamahia e ngā kaihanga he calipers me he micrometers hei ine tika i te matotoru o te rauemi. Ka inehia hoki te whānui o te whitiki kia tutuki ai ngā ine kua tohua. Me whakatau ngā rerekētanga katoa i mua i te whakaaetia o te rauemi kia whakamahia.

### 2. Whakamātautau mārō

Ko te pakeke he ine i te ātete o tētahi rauemi ki te whakarerekētanga me te kakahu. Ko te pakeke tētahi āhuatanga matua o te rauemi mō ngā tono e hiahia ana ki te pakari me te roa. He maha ngā tikanga whakamātautau pakeke, pērā i a Rockwell, Brinell, me Vickers, ka taea te whakamahi hei whakatau i te pakeke o tētahi rauemi mata.

Hei tauira, ka taea te whakamātautau i te pakeketanga o te maitai Q195 kia tino tutuki ai ngā whakaritenga e hiahiatia ana mō tōna whakamahinga. Waihoki, me whakamātautau anō hoki te pakeketanga o ngā momo maitai kore waikura 201, 304 me te 316 hei whakaū i tōna taumata pakeketanga, ka pā ki tōna mahi i roto i ngā taiao waikura.

### 3. Whakamātautau kume

Ko te whakamātautau kume tētahi atu āhuatanga nui o te whakahaere kounga o ngā rauemi mata. Ka inehia e tēnei whakamātautau te kaha me te ngāwari o tētahi rauemi mā te whakamahi i tētahi kaha kume tae noa ki te pakaru o te rauemi. Ka whakaratohia e ngā hua he kōrero whai hua mō te kaha tuku o te rauemi, te kaha kume mutunga, me te roa.

Hei tauira, mā te whakamātautau kume o te maitai Q195 ka āwhina i te whakatau i tōna pai mō ngā tono hanganga, ko te whakamātautau i ngā momo maitai kore waikura ka taea te whakaū i tōna kaha ki te tu atu i te ahotea i roto i ngā taiao maha. He mea nui ngā raraunga i whiwhi mai i te whakamātautau kume kia pai ai te mahi a te rauemi i roto i te tono e hiahiatia ana.

## hei whakamutunga

He tukanga nui te whakahaere kounga o ngā rauemi mata hei whakarite i te pono me te mahi o te hua whakamutunga. Mā te tirotiro me te whakamātautau i ngā rauemi pēnei i te maitai Q195 me te maitai kore waikura 201, 304 me te 316, ka taea e ngā kaihanga te kite i ngā raruraru pea i mua i te noho hei raruraru nui. Ko te tirotiro i te whānui, te matotoru, te pakeke me te mahi whakamātautau kume he wāhanga matua katoa o tēnei tukanga. Hei whakamutunga, ko te pūnaha whakahaere kounga kaha ehara i te mea ka whakapai ake i te pono o te hua, engari ka whakatairanga hoki i te angitu whānui o te pakihi hanga. I te whanaketanga tonu o te umanga, ko te hiranga o te whakahaere kounga o ngā rauemi mata ka noho tonu hei poutokomanawa o te hiranga o te hanga.