AISI H12 Wera Mahi Utauta Maitai – Otinga Pakari Teitei mō ngā Mahi Hanga me te Maka Mate

Taonga	Uara Noa
Kiato	7.8 karamu/cm³
Pakari (Kua whakawerahia)	≤ 229 HB
Pakari (Kua whakapakeketia & Kua whakamārōtia)	44–52 HRC
Kaha Kume	1500–1900 MPa
Te Kaha o te Hua	Tata ki te 1200 MPa
Te whakaroa	10–15%
Te Pakari o te Pānga	He tino pai i ngā pāmahana teitei

Mā ēnei āhuatanga ka taea e ngā taputapu AISI H12 te mahi i roto i ngā taiao kaha pērā i ngā make hanga wera me ngā pokepokea hanga-mate, me te kore e pakaru wawe, e pakaru rānei.

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4. Tukanga Maimoatanga Wera

Hei whakatutuki i ngā āhuatanga tino pai, me whai i te raupapa maimoatanga wera tika te AISI H12. Ka whakarei ake tēnei tukanga i te pakeke, te kaha, me te pumau o ngā āhuatanga.

Te whakamahana

• Whakamahana ki850–900°C

• Puritia mō te 2–4 hāora

• Whakamataohia te oumu ki te 600°C, kātahi ka whakamataohia ki te hau
  Hua:Hanganga ngohengohe (≤229 HB) mō te mahi miihini ngāwari.

Te whakamahana i mua

• Te whakamahana mārire i roto i ngā wāhanga e rua:

  1. 450–500°C

  2. 850–900°C

Te whakapakeketanga

• Whakapūmau i te1000–1050°C

• Puritia mō te 20–30 meneti

• Te tinei hau, te hinu rānei
  Hua:Te pakeke tae atu ki te 52 HRC.

Te whakamahana

• Whakamahanahia tonutia i muri i te tineia.

• E taunakihia ana te whakamahana takirua i500–650°C.

• I whakarerekētia te pakeke whakamutunga ki te 44–52 HRC i runga anō i ngā whakaritenga taputapu.

Mā te maimoatanga wera tika ka puta he hanganga moroiti pai, he kaha teitei, me te ātete ki te ru wera.

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5. Ngā Painga Matua o te AISI H12

He maha ngā painga ahurei o te AISI H12 Hot Work Tool Steel, ā, koinei te mea tino pai mō ngā mahi taputapu me te mate:

1. Kaha Wera Teitei
   Ka mau tonu te kaha ā-mīhini ahakoa i runga ake i te 600°C.

2. Ātete Tino Pai ki te Ngenge Wera
   Ātete ana ki te tirotiro wera me te ngatata i ngā huringa whakamahana auau.

3. Te Kaha Rawa
   He ātete tino pai ki ngā ru me ngā pānga i raro i ngā pēhanga hanga.

4. Te Pūmautanga Ahu Pai
   He iti rawa te whakapōturitanga i muri i te maimoatanga wera.

5. Ātete ki te Whakangawari
   Ka mau tonu te pakari i ngā pāmahana teitei.

6. Ātete ki te Mau me te Ātete ki te Korokoro
   He mahi tino pai i roto i ngā taiao waku nui pērā i ngā makere extrusion.

7. Te Roa o te Ora o te Utauta
   Te whakaiti i te wā kore mahi me te utu mō ia huringa mō ngā kaiwhakamahi ahumahi.

Nā ēnei painga ka waiho te AISI H12 hei otinga whānui mō ngā taputapu mahi wera tika me ngā taputapu mahi taumaha.

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6. Ngā Whakamahinga o te AISI H12 Wera Mahi Utauta Rino

Ka horapa te whānuitanga o te AISI H12 puta noa i ētahi rāngai ahumahi nui, tae atu ki te hanga, te whakarewa mate, me te whakaputanga.

1. Ngā tono hanga

• Ngā mate hanga maturuturu

• Ngā mate hanga pēhi

• Ngā mate kuti wera

• Ka mate te hama
  He tino whai hua te AISI H12 i roto ingā mahi hanga taumaha, he mea nui te roa o te ora o te mate me te ātete ki te pānga.

2. Ngā tono maka mate

• Ngā pokepokea ai te whakarewa mate pēhanga

• Ngā pine matua, ngā whakaurunga, me ngā ringaringa

• Ngā mate o te rūma wera me te rūma makariri
  Nā tōna kaha ki te ātete i te pakaru wera, he mea tino pai mō ngā pokepokea ai te konutea, te konumohe, me te konupora.

3. Ngā Utauta Whakaputa

• Ngā mate whakaputa konumohe me te parahi

• Ngā arai ipu

• Ngā mandrel me ngā kakau
  He tino pai te ātete o te AISI H12 ki te kakahu i te wā e peia ana ngā konganuku kore-ferrous.

4. Ngā Utauta Rererangi me ngā Utauta Motuka

• Ngā mate hanga wera mō ngā momo putanga hau

• Ngā pokepoke mata turbine

• Ngā wāhanga takirere me te werowero

5. Ngā Mata Kutikuti Wera me ngā Tapahi

• Ngā maripi kutikuti wera

• Ngā mata kutikuti mō ngā pae rino werawera me ngā pereki

E whakaatu ana ēnei tono i te kaha o te mahi a te AISI H12 me tōna roa o te ora mahi i raro i ngā āhuatanga whakahaere uaua.

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7. Whakataurite: AISI H12 vs AISI H13

Ahakoa e kitea ana te H13 hei paearu mō te ahumahi, he tino painga ngā hua o te H12 i roto i ngā whakamahinga motuhake.