i whakapuaki i ngā hua o tētahi rangahau taipitopito i whakahaerehia e te kamupene e whakarite ana i ngā pae totoka Inconel 625 ki ngā pae tuwhera Sanicro 60 hou.
Ko te Inconel 625 (nama UNS N06625) he konukōrei ātete wera (konukōrei ātete wera) e ahu mai ana i te nikara, kua whakamahia i roto i ngā ahumahi moana, karihi me ētahi atu ahumahi mai i tōna whanaketanga tuatahi i te tekau tau atu i 1960 nā ōna āhuatanga kaha teitei me te ātete ki ngā pāmahana teitei. He nui ake te parenga ki te waikura me te waikura.
Ko te Challenger hou he momo kōhao-tokotoko o te Sanicro 60 (e mōhiotia ana ko te Alloy 625). Kua hangaia te matua kōhao hou a Sandvik kia pai ake te mahi i roto i ētahi wāhi e nohoia ana e te Inconel 625, he mea hanga mai i te koranu nickel-chromium kaha teitei ka taea te tu atu i ngā pāmahana tino teitei i roto i ngā taiao kei roto he chlorine. He ātete ki te waikura intergranular me te waikura ahotea, ā, he Pitting Resistance Equivalency (PRE) neke atu i te 48.
Ko te whāinga o te rangahau he arotake whānui me te whakatairite i te kaha o te mīhini o Sanicro 60 (diameter = 72 mm) ki Inconel 625 (diameter = 77 mm). Ko ngā paearu aromatawai ko te roa o te ora o te taputapu, te kounga o te mata me te whakahaere maramara. He aha te mea ka kitea: ko te tunu hou mō te pae kōhao, ko te pae katoa tuku iho rānei?
E toru ngā wāhanga o te kaupapa aromatawai i Sandvik Coromant i Milan, Itari: te huri, te keri me te pato.
Ka whakamahia te MCM Horizontal Machining Center (HMC) mō ngā whakamātautau keri me te pato. Ka mahia ngā mahi hurihanga i runga i te Mazak Integrex Mach 2 mā te whakamahi i ngā kaipupuri Capto me te whakamatao o roto.
I arotakehia te roa o te ora o te taputapu mā te aromatawai i te kakahu o te taputapu i ngā tere tapahi mai i te 60 ki te 125 m/min mā te whakamahi i te karaehe koranu S05F e tika ana mō te whakaoti-haurua me te tātā. Hei ine i te mahi o ia whakamātautau, i inehia te tango rauemi mō ia tere tapahi mā ngā paearu matua e toru:
Hei ine anō i te āheinga miihini, ka arotakehia, ka aroturukitia hoki te hanganga maramara. I arotakehia e ngā kaiwhakamātautau te whakaputanga maramara mō ngā whakaurunga o ngā āhua rerekē (Mazak Integrex 2 e whakamahia ana me te pupuri PCLNL me te whakaurunga hurihuri CNMG120412SM S05F) i te tere tapahi o te 65 m/min.
Ka aromatawaihia te kounga o te mata i runga i ngā paearu tino pakari: kaua te taratara o te mata o te mea mahi e neke ake i te Ra = 3.2 µm, Rz = 20 µm. Me kore hoki he wiri, he kakahu, he taha kua whakapūpū (BUE – he rauemi kua whakapūpū i runga i ngā taputapu tapahi).
I whakahaerehia ngā whakamātautau keri mā te tapahi i ētahi kōpae mai i te tokotoko 60 mm te roa i whakamahia mō ngā whakamātautau hurihanga. I kerihia te kōhao i hangaia kia whakarara ki te tuaka o te tokotoko mō te 5 meneti, ā, i ia wā ka tuhia te pakaru o te mata o muri o te taputapu.
Mā te whakamātautau miro ka arotakehia te pai o te Sanicro 60 tuwhera me te Inconel 625 totoka mō tēnei tukanga nui. Ko ngā kōhao katoa i hangaia i ngā whakamātautau keri o mua i whakamahia, ā, i tapahia ki te taputapu miro Coromant M6x1. E ono i utaina ki roto i te pokapū miihini whakapae MCM hei whakamātautau i ngā kōwhiringa miro rerekē, me te whakarite kia mau tonu te pakari puta noa i te huringa miro. I muri i te miro, inehia te diameter o te kōhao i puta mai me te caliper.
He mārama ngā hua o te whakamātautau: i pai ake te mahi a ngā pae kau o Sanicro 60 i te Inconel 625 totoka, he roa ake te ora me te pai ake o te mata. I rite hoki ki ngā pae totoka te hanga maramara, te keri, te pato me te pato, ā, he rite tonu te pai o te mahi i roto i ēnei whakamātautau.
He roa ake te ora o ngā pae kōhao i ngā tere teitei ake i ngā pae totoka, ā, e toru ngā wā e roa ake ana i ngā pae totoka i te tere tapahi o te 140 m/min. I tēnei tere teitei ake, e 5 meneti noa iho te roa o te ora o te pae totoka, ko te pae kōhao ia he 16 meneti te roa o te ora o te taputapu.
I te pikinga ake o te tere tapahi, i noho pumau ake te ora o te taputapu Sanicro 60, ā, i te pikinga ake o te tere mai i te 70 ngā wā ki te 140 m/min, i heke te ora o te taputapu mā te 39% anake. He 86% te poto ake o te ora o te taputapu i te Inconel 625 mō te huringa tere kotahi.
He maeneene ake te mata o te papa rakau tuwhera Sanicro 60 i tērā o te papa rakau Inconel 625 totoka. He tirohanga ā-tinana tēnei (kāore te taratara o te mata e neke ake i te Ra = 3.2 µm, Rz = 20 µm), ā, ka inehia hoki mā te taha tirohanga, ngā tohu o te wiri, te kino rānei ki te mata nā te hanganga o ngā maramara.
I te whakamātautau miro, i rite tonu te mahi a te kakau kōhao Sanicro 60 ki tā te kakau totoka Inconel 625 tawhito, ā, i whakaatu i ngā hua ōrite mō te kakahu o te taha me te iti o te hanganga maramara i muri i te keri.
E tautoko ana ngā kitenga i te mea he pai ake te whakamahi i ngā tokotoko kau hei whakakapi i ngā tokotoko totoka. E toru ngā wā e roa ake ai te ora o ngā taputapu i te hunga whakataetae i ngā tere tapahi teitei. Ehara i te mea ka roa ake te ora o te Sanicro 60, engari he pai ake hoki, he kaha ake, he tere ake hoki te mahi, me te pupuri tonu i te pono.
I te taenga mai o tētahi mākete whakataetae o te ao e akiaki ana i ngā kaiwhakahaere mīhini ki te titiro roa ki ā rātou haumitanga rauemi, he mea nui te kaha o Sanicro 60 ki te whakaiti i te pakaru o ngā taputapu mīhini mō te hunga e hiahia ana ki te whakapiki i ngā hua me te whakapiki ake i ngā utu hua whakataetae. He mea nui tēnei.
Ehara i te mea ka roa ake te mahi a te mīhini, ka whakaitihia hoki ngā whakawhiti, engari mā te whakamahi i te uho tuwhera ka taea te karo i te tukanga mīhini katoa, ka kore e hiahiatia he kōhao i waenganui, ā, ka penapena pea i te nui o te wā me te moni.