Te Whakamātautau Pakeke Rockwell o ngā Huinga Polymer PEEK

Ko te PEEK (polyetheretherketone) he rauemi hiato mahi-teitei i hangaia mā te whakakotahi i te kapia PEEK me ngā rauemi whakapakari pēnei i te muka waro, te muka karāhe, me te uku. Ko ngā rauemi PEEK he pakeke ake, he pai ake te ātete ki te rakuraku me te mimiti, ā, he pai mō te hanga i ngā wāhanga me ngā waeine ātete-kakahu e hiahia ana ki te tautoko kaha-teitei. Mā te pakeke teitei o PEEK ka taea e ia te pupuri i tōna āhua ahakoa te tu atu ki te ahotea miihini me te whakamahinga roa, ā, ka taea ai te whakamahi whānui i roto i ngā mara pēnei i te rererangi, te motuka, me te tiaki hauora.

Mō ngā rauemi PEEK, he tohu nui te pakeketanga o te kaha o te rauemi ki te ātete i te whakarerekētanga i raro i ngā kaha o waho. He pānga nui tōna pakeketanga ki tā rātou mahi me ā rātou whakamahinga. Ko te tikanga ka inehia te pakeketanga mā te pakeketanga o Rockwell, inā koa te tauine HRR, e tika ana mō ngā kirihou pakeke-waenga. He watea te whakamātautau, ā, he iti noa te kino o te rauemi.

I roto i ngā paerewa whakamātautau pakeke a Rockwell mō ngā rauemi hiato pūmua Peek, e whakamahia whānuitia ana te tauine R (HRR) me te tauine M (HRM), ā, i roto i ēnei ko te tauine R te mea e whakamahia whānuitia ana.

Mō te nuinga o ngā rauemi Peek parakore kāore i te whakakahangia, he iti rānei te whakakahangia (hei tauira, ko te ihirangi muka karāhe ≤ 30%), ko te tauine R te mea pai rawa atu. Nā te mea he pai te tauine R mō ngā kirihou ngohengohe, ko te pakeke o ngā rauemi Peek parakore i te nuinga o te wā mai i te HRR110 ki te HRR120 pea, e taka ana ki roto i te awhe ine o te tauine R—e taea ai te whakaata tika i ō rātou uara pakeke. Hei tāpiri, he kaha ake te whānui o ngā raraunga mai i tēnei tauine i roto i te umanga ina whakamatautauria te pakeke o aua rauemi.

Mō ngā rauemi hiato Peek he nui te whakakaha (hei tauira, te muka karāhe/te ihirangi muka waro ≥ 30%), ka whakamahia pinepinetia te tauine M nā te mea he nui ake te pakeke. Ka whakamahia e te tauine M he kaha whakamātautau nui ake, ka taea te whakaiti i te pānga o ngā muka whakakaha ki ngā kōhao, ā, ka hua ake he raraunga whakamātautau pumau ake.

Me tutuki te whakamātautau pakeke Rockwell o ngā rauemi whakakotahi PEEK i ngā paerewa ASTM D785, ISO 2039-2 rānei. Ko te tukanga matua ko te whakamahi i tētahi kawenga motuhake mā roto i tētahi kōhao taimana me te tatau i te uara pakeke i runga i te hohonutanga kōhao. I te wā o te tukanga whakamātautau, me aro nui ki te whakahaere i te whakarite tauira me te taiao whakamātautau kia tika ai te uara hua. Me mōhio ki ngā whakaritenga matua e rua i te wā o te whakamātautau:

1. Ngā Whakaritenga Tauira: Me ≥ 6 mm te matotoru, ā, me ≤ 0.8 μm te taratara o te mata (Ra). Mā tēnei ka ārai i te hē o ngā raraunga e puta mai ana i te kore matotoru, i te kore ōrite rānei o te mata.

2. Mana Taiao: E taunakihia ana kia whakahaerehia te whakamātautau i roto i te taiao me te pāmahana o te 23±2℃ me te haumākū whanaunga o te 50±5%. Ka taea e ngā piki me ngā heke o te pāmahana te pā nui ki ngā pānui pakeke o ngā rauemi polymer pēnei i a Peek.

He rerekē ngā whakaritenga mō ngā tukanga whakamātautau i ia paerewa, nō reira me mārama te whakamārama i ngā kaupapa matua hei whai mā te hunga e mahi ana i ngā mahi tūturu.

Ka taea e te pakeke o ētahi rauemi hiato PEEK kua whakapakaritia te neke atu i te HRC 50. Me whakamātautau i ō rātou āhuatanga miihini mā te tirotiro i ngā tohu pēnei i te kaha kume, te kaha piko, me te kaha pānga. Me whakahaere ngā whakamātautau paerewa kia rite ki ngā paerewa o te ao pēnei i te ISO me te ASTM hei whakarite i te pumau o ō rātou kounga me te mahi, me te whakarite hoki i te haumaru me te pono o ā rātou tono i roto i ngā mara e tika ana.