Raupapa:He aha i kore ai e rahua ngā mata keri | Tuhinga 3
Ngā Kupumatua:Ko te kounga o te mata wiri HSS, te taumaha o te mata wiri, te pakeke o te mata wiri, te mātotoru o te HSS, te tirotiro kounga o te mata wiri, me pēhea te aromatawai i ngā mata wiri
Ka paunatia e ētahi kaihoko ngā mata wiri ina aromatawaihia ana ngā tauira a tētahi kaiwhakarato hou. Ko te taumaha o te mata wiri, ko te pai ake o te maitai — koinei te whakaaro.
He āhua mārama tēnei. E ahua ana te taumaha hei tohu mō te matū. Engari mō ngā mata wiri HSS, ko te taumaha tētahi o ngā tohu kounga iti rawa. I ētahi wā, ko te mata wiri taumaha he tohu nō te hua kounga iti iho.
Anei te take.
Kāore e nui te rerekētanga o te mātotoru HSS i waenga i ngā tohu
Ko te Rino Tere Tere he whānau motuhake o ngā maitai taputapu e tautuhia ana e ōna huānga whakarewa - tungsten, molybdenum, chromium, vanadium, ā, i roto i ngā karaehe cobalt, cobalt. Ka tāpirihia ēnei huānga i roto i ngā ōrau iti hei whakahaere i te pakeketanga, te ātete ki te kakahu, me te pakeketanga whero.
Ko te mātotoru o te HSS puta noa i ngā momo noa — M2, M35, M42 — kei roto i tētahi awhe whaiti, tata ki te 8.1 ki te 8.3 karamu/cm³. He rerekē te nui o te cobalt i roto i te M2 me te M35 (0% vs. tata ki te 5%), engari ko te mātotoru o te cobalt (tata ki te 8.9 karamu/cm³) he tata ki te hanganga maitai turanga, ā, mā te whakaranu i te 5% o taua mea ki roto i te koranu ka nekehia te mātotoru whānui mā te iti iho i te 0.1 karamu/cm³. Kāore e kitea taua rerekētanga e te ringaringa, ā, he iti noa iho ahakoa i runga i te tauine tika.
I ngā kupu mahi: kāore e taea te whakamahi i te taumaha hei wehewehe i te M2 mai i te M35, i te HSS paerewa rānei mai i te HSS kounga-cobalt.
He aha rā te take i taumaha ake ai ētahi o ngā mata wiri?
Mena he rerekē te taumaha o ngā mata wiri e rua he rite te rahi, ko te āhua o te mata te take — ehara i te rauemi.
Ka whakatauhia te taumaha o te mata wiri e te nui o ngā rauemi kei roto. Mō tētahi roa me te whānui kua whakaritea, ko te taurangi matua ko te nui o te maitai kua tangohia i te wā e huri ana. Ko te āhua o te putorino — te hohonu me te whānui o ngā awa porowhita kua tapahia ki roto i te tinana — te mea e whakahaere tika ana i tēnei. Ko ngā putorino hohonu ake, whānui ake ka tangohia he nui ake ngā rauemi. Ko ngā putorino papaku ka waiho he nui ake.
Ka taea e te kaihanga te hanga i tētahi mata wiri taumaha ake mā te huri i ngā putorino papaku. He nui ake ngā rauemi matua e mau ana i te mata, nō reira he nui ake te taumaha. Engari he pānga kino ki ngā putorino papaku: ka iti ake te whai huatanga o te tango maramara, ka piki ake te waku tapahi, ā, ka tere ake te hanga wera i te rohe tapahi. I roto i ngā rauemi uaua, i ngā whāngai teitei ake rānei, ka tere ake te pakaru me te mōrearea o te pakaru wawe.
Ko te tikanga o tēnei, ehara i te mea pai ake te mata wiri taumaha. Tērā pea he mata i tapahia he kokonga i roto i te āhuahanga — ā, kei te pohehe te kaihoko i te tohu hei tohu kounga.
He aha te Taumaha e Whakaatu Ana
Ko te taumaha e whakaata ana i te rōrahi o te maitai e toe ana. Ka whakahaeretia te rōrahi e te huri. Ko te kounga o te huri he whakatau a te kaihanga.
Ka huri te kaihanga mātau i ngā putorino ki te āhua kua tohua e te tono — he take tō te DIN 338, ngā paerewa rite rānei, ki te tautuhi i te koki porowhita, te hohonu o te putorino, me te āhua o te pūwāhi. Kua arotauhia ēnei āhua puta noa i ngā tekau tau o te whakamahinga ahumahi hei whakataurite i te tango maramara, te kaha o te mata hou, me te pai o te keri.
Ko te mata wiri e rerekē ana i te āhua paerewa, ā, e āhua taumaha ake ana, kāore i whakapai ake i taua taurite. Kua whakararu i tōna āhua.
Ngā Inenga Tino Hiranga
Mena ehara te taumaha i te tohu pono, me aha ngā kaihoko ina aromatawai ana i te kounga o te mata keri?
Ko ngā taurangi whai tikanga ko:
•Te pakeketanga.I muri i te whakamahana, me eke te mata tapahi o tētahi mata keri M2 HSS i hangaia tika ki te HRC 63–65. Me eke te konupora M35 ki te HRC 64–66. Ko ngā uara pakeke i waho o ēnei awhe e tohu ana i ngā raruraru o te whakamahana — he iti rawa te wera, he koretake te tere tinei, he ngoikore rānei te whakahaere whakamahana. Ka taea te ine tika i te pakeketanga mā te whakamahi i tētahi taputapu whakamātautau pakeke Rockwell.
•Te hanganga rauemi.Ko te tātari ine-ā-ira (OES — Optical Emission Spectrometry) te huarahi pono anake hei manatoko mēnā kei roto i te mata keri ngā huānga koranu e kīia ana. Te nui o te kobalt, te ōrau tungsten, te vanadium — kāore tētahi o ēnei e kitea, e taea rānei te pauna. Me manatoko taiwhanga.
•Te tika o te āhuahanga.Ka pāngia te mahi tapahi e te koki pūwāhi, te koki porowhita, te ōritetanga o te putorino, me te āhua o te mata o te whao. Ka taea te ine i ēnei mā te whakamahi i ngā taputapu ine whatu, i ngā pūwhakaata kōtaha rānei.
•Te ōritetanga o te puranga.Kāore e ranea te tauira kotahi e puta ana i te pai. Me whai hua ngā kaihoko ahumahi puta noa i te puranga whakaputa katoa. Ko te rite o te pakeke, te āhua, me te whakaotinga mata puta noa i ngā rau, i ngā mano rānei o ngā wahi he pātai tukanga hanga, ehara i te pātai tirotiro kotahi-wāhanga.
•Whakaotinga mata.Ka kitea te kounga o te huri. Ko ngā tohu huri taratara, ngā mata pūtorino kāore i te ōrite, ngā tohu haruru rānei e kitea ana i te mata tapahi he tohu ēnei o ngā raruraru tukanga. Mā te mata wiri i hurihia tika ka kitea he mata pūtorino ma, maeneene me te āhua mata ōrite.
He aha te tikanga o tēnei mō ngā whakataunga mō te rapu rauemi
Ina tukuna mai he tauira e te kaiwhakarato, kaua e aro ki te aromatawai i aua tauira mā te taumaha. Ko te tirotiro nui ko te tono tiwhikete rauemi, te tirotiro i te āhuahanga i raro i te whakanui mēnā ka taea, ā, — mō ngā ota nui — tono raraunga whakamātautau pakeke, manatoko rauemi motuhake rānei.
Ehara te taumaha i te ara poto. He haruru.
Ko te kounga o te mata wiri HSS kei roto i tōna hanganga maitai, tōna maimoatanga wera, me tōna āhua whenua. Kāore tētahi o ēnei e puta i runga i te tauine.
Mō tēnei Raupapa
He raupapa hangarau a Why Drill Bits Fail nā tā mātou tīma hanga. E arotahi ana ia tuhinga ki tētahi āhuatanga o te mahi a te mata o te wiri - mai i ngā rauemi mata ki te takai. He māmā noa te whāinga: āwhina i ngā kaihoko ki te mārama ki tā rātou e hoko ana, me ngā pātai e tika ana kia pātaihia.
Wā tuku: Pipiri-11-2026