Te Painga o te Mātātoko o te Kōpae ki te Tāmata o te Kōpae Tāwhai

Te pakeke, te whakakakahu, me te ngenge wera: Ngā āhuatanga matua o te pūngao o te pūtuhi

Ngā Whakatau-a-Mekini: Te pakeke me te pakeke i roto i te Whakaputa Whakaputa-Rangi-Rangi

Te kōwhiri rauemi mō ngā tātuhi werohanga ko te rapu i te wāhi reka i waenganui i te pakeke me te pakeke, he mea e whawhai tonu ana ngā kaipūkaha. I te wā e pā ana ki te pakeke i whangangahia i runga i te tauine Rockwell C (HRC), kua kite mātou i ngā raraunga mai i ASM International i te tau 2023 e whakaatu ana ka taea e ngā taumata pakeke teitei ake te whakaiti i te kākahu o ngā kiriaku whakakī i te 40% Engari ka neke rawa atu ngā mea i te 55 HRC, ka tīmata te waikura o ngā wāhanga matotoru i roto i te āhua i raro i te pēhanga. I te taha o te taha, ahakoa kāore ngā rauemi pakeke ake e pakaru i ngā huringa pēhanga kaha, ka tere ake te hāmama i te wā e mahi ana ki ngā kirihou pakeke pēnei i te nairona. Ko reira ngā rino taputapu pēnei i te H13 e tino whiti ana. I tutuki ēnei maitai ki te rohe Goldilocks tika i te 48 ki te 52 HRC, ko te tikanga ka roa pea i roto i ngā rau mano huringa i roto i te hanga waka, kāore e pakaru. E whakawhirinaki ana te ahumahi waka ki tēnei ōritetanga nā te mea kāore tētahi e hiahia kia mutu te mahi i runga i te raina whakaputa i te mea kua kore te āhua o te āhua.

Ngā tikanga whakairo wera i roto i ngā huringa whakawera/whakamakuku maha

Ko ngā rereketanga tere o te pāmahana i waenganui i te 80°C260°C ka puta he taumaha wera neke atu i te 700 MPa i ngā mata o te āhua (Society of Plastics Engineers 2024), e hora ana i ngā kōpeke iti mā roto i ngā wāhanga e toru:

• Te waikura o te mata mai i te waikura o te waikura
• Te whakawhānui rerekētanga i waenganui i te pokapū me te papa o te mata
• Te pūngao o te taumahatanga i ngā kokonga koi
  Ko tēnei kino katoa ka puta mai hei craze cracking i muri i ngā huringa ~100k i roto i te ABS tukatuka maitai P20. Ko ngā momo momo me te kaha o te wera pērā i te parahi beryllium ka whakaiti i ngā kōaro wera ki te 35%, ka whakaroa i te tīmatanga o te pakaru.

Ko ngā tohu mahi motuhake mō te rauemi mō te pūngao o te pūmua werohanga

Te maitai taputapu (P20, H13, S7): Nga awhe ora i runga i te rōrahi tono me te momo raima

I roto i ngā mahi whakarewa werohanga nui, ko ngā maitai taputapu te kōwhiringa e haere ana no te mea e aukati ana i te whakakakahu i te wā. Tangohia te maitai H13 hei tauira ka taea e ia te whakahaere i te haurua miriona ki te miriona huringa whakaputa ina mahi me nga rauemi pakeke pēnei i te nairona karaihe. Engari ka huri ngā mea ina noho tonu te wera, ka heke te mahi H13 i muri i te 250 mano huringa. Mō ngā mahi iti iho te tono, he pai te utu o te P20 maitai, e mau ana i waenganui i te 250k me te 500k huringa ki ngā kirihou ngohengohe pēnei i te polypropylene. I te wā e tino nui ana te ātete pānga, ka tuwhera te maitai S7, e mau ana i te taha kotahi i te 300 mano huringa ahakoa te mahi ki aua raima hangarau pakeke. Ko te rerekētanga i te tere o te kawe wera o ēnei maitai he rerekētanga tūturu hoki. Ko te H13 i te 24.6 watts ia mita kelvin ka pōturi ake i te P20 e pai ake ana ngā āhuatanga wera i te 29.5 W/mK. Ka pā tēnei ki te tere o te whakamahi anō i ngā tāhua i ngā taiao hanga pukumahi e whai mana ana ia hēkona.

Ngā Whakamātautau Kāore i te Tūturu: Te Aharoma me te Beryllium-Copper i ngā Whakamāhi Mōhini Tāwhai Tāwhai Iti ki te Wāhi Rite

I te hanganga i ngā tauira tuatahi, i te whakamahi hoki i ngā whakamātautau i raro i ngā whakamātautau e 100,000, ko ngā tārua āhua kia whakamāhi ai ngā wā hōhā i te wā hāngai i te 60%, ā, he iti ake ngā utu i te 45% i ngā tārua kōpū. Ko te raru mai i te āhua māmā o te āhua, me tana pākaha Vickers i waenganui i te 60 me te 100 HV. Arā, ko tana wā tonu i te whakamahi i te 50,000 ki te 100,000 whakamātautau i ngā pākahu mātua pērā i te polyethylene. Ko te kōpū beryllium te whakamāhi i te wāhi i waenganui i ēnei āhua. Ko tana whakamārama i te hōhā i te 105 watt i te mita i te Kelvin, e toru ngā wā ake i te kōpū taputapu tūmatua, ā, ko tēnei i whakamāhinga i ngā hānganga whakamātautau mō ngā kōpū pūnaha pūtea pērā i te ABS, i te polycarbonate, i te 10 ki te 15% ake te tere. Mō ngā kaiwhakamahi i ngā rākau hauārahi i ngā whakamātautau wāhi, ka taea e te kōpū beryllium te whakamāhi i te 150,000 whakamātautau i muri i te whakamāhi i te whakamātautau i mua i te whakamāhi anō. Engari, tāwhai ngā rākau chlorinated, nā reira he raru o ngā pākaha o te pākaha i te wā.

Ngā Hāngā Kimikā me ngā Hāngā Taiao e whakahaere ana i te pakaru o ngā tārua whakauru

Te riri o ngā rēsini hālogene (pērā i ngā PVC, FR-PC) me ngā whakamāramatanga mā ngā kōpae rino kākāriki, i ngā kōpae rino kua whakakōpia rānei

I te mahi ki ngā raukaha haurangi, ka kitea e mātou he mea tuku mai ngā matū kai i te wā e tukatuka ana. Ka puta te konupora i ngā rauemi PVC, ā, ka tukuna te bromine i ngā polycarbonates retardant flame (FR-PC). Ka tere ake ēnei matū i te tukanga pakaru hiko i roto i ngā maitai taputapu noa e whakamahia ana puta noa i te ahumahi. He aha te mea ka whai ake? Ka tīmata te kōpeke me te kōkō o te mata, e pā ana ki te tika o te rahi i muri i te 50 mano huringa production. Hei whawhai ki tēnei raruraru, he maha nga toa e tahuri ana ki nga whiringa maitai kore e rite ana ki te 420SS na te awangawanga o te waikura o te chromium. Ko tētahi atu huarahi ko te whakamahi i ngā papanga pēnei i te titanium nitride, i te nickel-PTFE rānei, e whakaiti ana i te pānga o te mata e 85%. He mea nui hoki te hoahoa o te pūkaha, nā te mea ka ārai i ngā hau kōkō i te mau ki roto i te pū. Ka kino ake te āhuatanga ina mahi ana ki ngā pūhui karaihe i whakakiia, e mahi tahi ai te kōaro me te waikura. Heoi anō, kua kite ngā kaiārahi o te ahumahi i ngā hua whakamiharo - e pūrongo ana ētahi kua toru ngā tau o te taputapu i te wā e neke ana ki ngā maitai H13 whakakikoruatia mō ngā huinga whakaputa FR-PC nui e neke atu ana i te 200k ngā pupuhi.

Te whakamārama i te tāwhai o te pūmau me ngā here āhua o te whananga o ngā rākau tā

Kia roa a wāhi whakauru, me whakamātautau i ngā whakatau pūmau ki ngā mea e wātea ana i te whanonga. He tauira, ko te hī 13. He pai tonu tēnei i te whakawātea i ngā whakamātau o te whanonga maha, engari kia pono – kāore he tangata e hiahia ana ki te utu i te rahinga o ngā $100,000 mo tēnei wāhi whakauru pūmau inā mō te hanga i ngā rākau i te rārangi o ngā rākau e raru noa. Ā, ngā wā roa o te tātai? Ko ngā wā e waru ki ngā tekau mā rua wiki he wā roa tonu i te whanonga o ngā tauira. Me whakaaro anō hoki i te āhua o te wāhi. I ngā wā e whai ana i ngā āhua pūmau pērā i ngā whakamātau rāwhiti, me ngā whakamātau iti, me whakamāhi i ngā hī pūmau e whakawātea ana i ngā whakamātau. Ko ngā utu o ēnei he 30% ki ngā 50% ake i ngā hī tūmatua. Me whakamātautau anō ngā kaiwhakamahi i ngā whakamārama e tino pūmau ana. Ko ngā wāhi e hiahia ana i ngā whakamārama i raro i te ±0.05 mm ka whakamātau i ngā wāhi whakauru i te wā roa, ā, kāore he whāinga. I ngā whakamātautau, ko ēnei whakamārama pūmau e whakamānui ana i ngā utu o ngā wāhi whakauru i te 25%, ā, kāore he whāinga i te whanonga. Ko te take mutunga? Ko te whiwhi i te uara pai mai i ngā wāhi whakauru pūmau i te tīmata i te whakamātautau i ngā kaiwhakamahi me ngā kaiwhanonga i tēnei wā tuatahi. Me whakamātātā i ngā kōpae i ngā wāhi e hanga nei, i ngā rākau e whakamāhi nei, me ngā mahi e hiahia ana i te wāhi. Ko tēnei hei āwhina i te hanga i ngā wāhi whakauru e taea ai te whanonga i ia rā, ā, kāore he whakamānui i ngā utu, kāore anō hoki he whakamānui i ngā wā.