Chikalata cha Labu: Kusankha Chitsulo cha Alloy ndi Chithandizo cha Kutentha kwa Ma Adapter a Chidebe Osavala

A Komatsu bucket teeth adapterNdi mgwirizano wa kapangidwe kake pakati pa m'mphepete mwa chidebe cha excavator ndi nsonga ya dzino yomwe ingasinthidwe. Imatenga mphamvu yonse yokumba — yomwe pa chidebe cha PC200 imatha kufika 140 kN ku nsonga ya dzino la chidebe — ndikuitumiza kuchokera ku dzino kudzera pa adaputala ndikulowa mu mlomo wa chidebe. Ngati adaputala yasweka kapena yatha pang'ono pa pin bore, nsonga ya dzino imatayika ndipo wogwiritsa ntchito ayenera kusiya kukumba, kuchotsa dzino, ndikusintha adaputala — ntchito ya mphindi 25 pamtengo wa $2-3 pa mphindi imodzi mu mtengo wosagwira ntchito wa makina.

Mu fakitale yathu ya JM China, timagwiritsa ntchito ma adapter a Komatsu ochokera ku chitsulo chotsika cha martensitic — chomwe nthawi zambiri chimakhala 30CrMnSi kapena 35CrMo — chifukwa ma alloys awa amakwaniritsa kuuma kofunikira kwa HRC 45–52 pambuyo pozimitsa mafuta ndikutenthetsa pamene akusunga kulimba kokwanira kuti ntchito yofukula iyende bwino. Njira yopangira mafuta imagwiritsa ntchito thovu lotayika ndi nkhungu ya mchenga wa silika. Pambuyo poyika, adaputala iliyonse imayikidwa pa 920°C kwa maola awiri, kuzimitsidwa ndi mafuta kutentha kwa chipinda, kenako kutenthedwa pa 250°C kwa maola atatu kuti ikwaniritse kuuma komwe mukufuna. Gawo lotenthetsa ndi lofunika kwambiri: lidumpheni ndipo adaputala imakhala yofooka pa HRC 58–60, yomwe imatha kusweka pa kugunda koyamba kwa miyala. Kutenthedwa kwambiri pa 350°C ndipo kuuma kumatsika kufika pa HRC 38–42, kuchepetsa nthawi yogwiritsidwa ntchito ndi 40%.

Tili ndi mfundo yolimba ya HRC 48 ± 3 ya ma adapter a Komatsu okhazikika ndi HRC 52 ± 2 ya mtundu wolemera womwe watchulidwa ndi akatswiri ogwetsa. Kulimba kumatsimikiziridwa ndi miyeso ya Rockwell C ya mfundo zitatu pa adaputala iliyonse: imodzi kumapeto kwa mphuno (dera lomwe limasunga dzino), imodzi kumapeto kwa pin boss (dera lomwe limatenga pini yosungira), ndi ina kumapeto kwa malo oikira (dera lomwe limalumikiza kapena kulumikiza pa mlomo wa chidebe). Kulimba kwa nsonga ya mphuno kuyenera kukhala mkati mwa mfundo ziwiri za HRC kuchokera ku pin boss - apo ayi kusiyana pakati pa malo awiriwa kumathandizira kumasuka kwa dzino. Ngati nsonga ya mphuno ndi yofewa (HRC 42) pomwe pin boss ndi yolimba (HRC 50), nsonga ya mphuno imavala mofulumira ndi 30% ndipo dzino limayamba kusewera mbali patatha maola 120. Wogwiritsa ntchito sangamve kuseweraku mu kabati - koma pini yosungira tsopano ikunyamula katundu wambali womwe sunapangidwe, ndipo kudula pini msanga kungakhale kothekera.

Mu Januwale 2025, tinayesa ma adapter 50 kuchokera ku gulu latsopano loponyera poyerekeza ndi 50 kuchokera ku zomwe tapanga panopa. Gulu latsopanolo — lopangidwa kuchokera ku kutentha kosiyana pang'ono kwa 35CrMo — linawonetsa kulimba kwa mphuno ndi pini kwa ma point 3.8 HRC pa avareji, poyerekeza ndi 1.6 pa gulu lomwe lilipo panopa. Chifukwa chachikulu chinali kutentha kwa mafuta ophikira mafuta ndi 15°C pa tsiku loyamba la gulu latsopano lopangira, zomwe zinachepetsa kuuma kwa quench pa nsonga ya mphuno yopyapyala koma osati pa pin boss yokhuthala. Tinabwezeretsa mafuta ophikira mafuta kufika pa 45°C ndipo tinatsimikizira kuti kulimba kwa quinch kunabwerera ku avareji ya ma point 1.6 m'masiku anayi otsatira opangira. Ma adapter 50 ochokera ku gulu losazolowereka adatsitsidwa kukhala "musonkho wamba" ndipo adagulitsidwa pamtengo wotsika kuti agwiritsidwe ntchito mosavuta.

Mbiri Yopanga: Kuponya, Kuchiza Kutentha, ndi Kutsimikizira kwa Dimensional kwa Komatsu K-Series Adapters

Mbiri ya pin ya Komatsu K — yomwe imagwiritsidwa ntchito pa PC30 mpaka PC800 excavator models — imatchula pin bore yopapatiza yokhala ndi ngodya ya 2° yomwe ili pamwamba ndi pansi pa bore, pin diameter yeniyeni (12 mm ya PC50 mpaka 30 mm ya PC650), ndi mtunda wa pakati pa pin mpaka mphuno womwe umasiyana malinga ndi kukula kwa adapter. Kupatuka kwa pin bore yoposa 0.3 mm pamalo a pin bore kumatanthauza kuti pin yosungira singayikidwe kudzera m'zino ndi m'mabowo a adapter — ndipo adapter yonse ndi zinyalala. Kulondola kwa kukula kumeneku kumachitika kudzera mu kuphatikiza kwa CNC machining pambuyo poyika ndi chopangira chodzipereka chomwe chikuwonetsa malo oyambira a adapter.

Timayika adaputala iliyonse m'njira imodzi pa malo opangira makina ozungulira anayi. Njira yogwirira ntchito ndi iyi: (1) kuyang'ana maziko oyika - kutanthauza malo oyikapo kuchokera ku thovu lotayika; (2) kuboola ndikusintha chibowo cha pini kuti chigwirizane ndi kulekerera kwa H8 (mwachitsanzo, 20.0 +0.033/0.000 mm pa adaputala ya PC200); (3) kupukuta mphuno yosungira mano; ndi (4) kuboola dzenje lodutsa pa pin boss ya retainer clip. Pambuyo pa makina opangira, adaputala iliyonse imayesedwa pa makina oyezera (CMM) okhala ndi resolution ya 0.005 mm. Miyeso yofunika kwambiri - pin bore diameter, pin bore mtunda wa pakati pa nkhope ndi nkhope, ndi m'lifupi mwa nsonga ya mphuno - zimayesedwa ndikulembedwa mu lipoti la batch lomwe limayenderana ndi kutumiza kulikonse kupita kwa ogulitsa aku Japan.

Mu 2024, tinapanga ma adapter 38,000 ogwirizana ndi Komatsu m'mitundu 20 ya kukula. Chiŵerengero cha kukana chinali 1.1%, zomwe zikutanthauza kuti ma adapter 418 sanathe kuyang'aniridwa ndi CMM ndipo anachotsedwa kapena kukonzedwanso. Kulephera kofala kwambiri - 62% ya kukana konse - kunali malo a pin bore: mtunda wa pakati mpaka kumaso oikira unali kunja kwa zenera la ± 0.3 mm lololera. Tinatsatira izi chifukwa cha kusiyana kwa kutentha kwa ma castings osaphika: ma castings omwe anali atazizira pang'onopang'ono mu nkhungu (chifukwa cha chinyezi chambiri cha mchenga) adawonetsa kuchepa kwina kwa 0.15-0.2 mm kumapeto kwa mphuno, kusuntha malo a pin bore poyerekeza ndi malo owonetsera. Yankho la foundry linali kukhazikitsa kuzizira kolamulidwa kwa nkhungu kwa mphindi 180 ± 10 musanayambe kugwedezeka - kale, nthawi yozizira imadalira kusankha kwa wogwiritsa ntchito ndipo inali kuyambira mphindi 120 mpaka 240. Pambuyo pokhazikitsa kuzizira kolamulidwa, chiŵerengero cha kukana malo a pin bore chinatsika kuchokera pa 0.68% mpaka 0.19%.

Kwa ogulitsa aku Japan — omwe nthawi zambiri amakhala ndi ma adapter 200–500 pa kukula kulikonse — njira yotsatirira batch yomwe timapereka imawalola kuzindikira adaputala iliyonse malinga ndi nambala yake ya batch ndikupeza mbiri ya casting, tchati chothandizira kutentha, ndi lipoti la kukula kwa CMM. Kutsatirira kumeneku kukuchulukirachulukira chifukwa cha machitidwe oyang'anira khalidwe la makampani omanga aku Japan, omwe amafuna kuti zida zonse zogwiritsidwa ntchito ziperekedwe kwaBungwe la Zipangizo Zomangamanga ku JapanMakampani omwe ali mamembala ali ndi zikalata zonse zokhudza mbiri ya kupanga.

Deta Yam'munda: Kugwira Ntchito kwa Makina Osungira Pin Pansi pa Kutsegula Kwanthawi Zonse

Dongosolo losungira mapini — chogwirira chachitsulo cha spring kapena polyurethane retainer chomwe chimatseka chogwirira cha adapter — ndi gawo laling'ono kwambiri la chogwirira cha adapter koma chomwe chimayambitsa kulephera kwa munda. Chogwirira cha retainer chikasweka kapena kutaya mphamvu, chogwirira cha retainer chimagwira ntchito momasuka pamene kukumba kukugwedezeka, ndipo nsonga ya dzino imagwa pa adapter mkati mwa nthawi 10-20. Nsonga ya dzino lotayika pamalo ogwetsera pakati pa Tokyo — komwe chogwirira cha PC350 chinali kuswa slabs za konkire yolimbikitsidwa — zikutanthauza kuti makinawo ayenera kuyima, wogwiritsa ntchitoyo ayenera kutsika pansi, kupeza dzinolo mu mulu wa zinyalala (zomwe zingatenge mphindi 10 pamalo odzaza), kulitenga, ndikuliyikanso ndi chogwirira chatsopano cha retainer. Pamtengo wa makina wa $80 pa ola limodzi logwirira ntchito komanso kuyima kwa mphindi 30 kosakonzedwa, kutaya dzino kulikonse kumawononga $40 mu nthawi yopanda ntchito ya makina — kuphatikiza mtengo wa ntchito wa wogwiritsa ntchito ndi woyang'anira chitetezo cha malo.

Tinayesa zinthu zitatu zosungiramo zinthu pa makina oyendera malo ku Zhengzhou mu 2024: (1) chitsulo cha masika 65Mn, chotenthetsera ndi HRC 44–48; (2) chitsulo cha masika 60Si2Mn, chotenthetsera ndi HRC 46–50; ndi (3) kuuma kwa polyurethane 95A Shore. Kuyesaku kunayendetsa chotchinga chilichonse kudzera mu ma cycle 50,000 ochotsera mano pafupipafupi ya 0.5 Hz - kutsanzira vuto lalikulu kwambiri la kusintha kwa dzino lonse pa nthawi iliyonse ya zaka ziwiri. Ma clip a 65Mn adawonetsa kuwonongeka kwa mphamvu ya clip ndi 22% pambuyo pa ma cycle 50,000 - kuchokera pa 280 N yoyamba mphamvu yosungira mpaka 218 N. Ma clip a 60Si2Mn adawonetsa kuwonongeka kwa 15% - kuchokera pa 300 N mpaka 255 N. Ma polyurethane clip adawonetsa kuwonongeka kwa 35% - kuchokera pa 200 N mpaka 130 N - ndipo atatu mwa ma polyurethane clip 20 adasweka pamalo olumikizirana pakati pa ma cycle 30,000 ndi 38,000.

Kutengera ndi zotsatirazi, tsopano tikugwiritsa ntchito ma clips achitsulo a 60Si2Mn monga muyezo pa ma adapter onse a Komatsu omwe ali pamwamba pa PC200, ndipo timapereka ma clips a 65Mn pa ma PC70 ndi PC130 ang'onoang'ono pomwe mphamvu yotsika ya clips ikadali yokwanira kuti mano azitha kunyamula 20 kN. Ma polyurethane clips akadalipo kuti agwiritsidwe ntchito pazinthu zosafunikira monga kutseka mano a ndowa koma sakuvomerezedwa pakugwetsa kapena kufukula miyala. Tili ndi ma clips khumi owonjezera okhala ndi pallet iliyonse ya ma adapter 50 otumizidwa kwa ogulitsa aku Japan - njira yomwe yalandiridwa bwino chifukwa ma clips ndi gawo laling'ono lomwe limatayika nthawi zambiri pa ntchito zosamalira minda.

Zotsatira za Mayeso: Kuyerekeza Kukana Kuuma kwa Magawo Ovuta

Tinayesa kukanda motsatira njira yolamulira poyerekeza chitsulo cha adaputala pamlingo wovuta anayi: HRC 38, HRC 45, HRC 50, ndi HRC 55. Chitsanzo chilichonse chinali mbale ya 50 mm × 50 mm × 12 mm yodulidwa kuchokera ku adaputala yopanga pa nsonga ya mphuno. Kuyesaku kunagwiritsa ntchito chipangizo chouma cha rabara cha mchenga pa ASTM G65 — njira D, katundu wa 5 kg, ma revolution 1,000 — ndipo anayeza kutayika kwa voliyumu mu ma cubic millimeters.

Zotsatira zake: HRC 38 yataya 85 mm³. HRC 45 yataya 62 mm³ — kusintha kwa 27% poyerekeza ndi chitsanzo chofewa kwambiri. HRC 50 yataya 48 mm³ — kusintha kwa 23% poyerekeza ndi HRC 45 ndi 44% poyerekeza ndi chofewa kwambiri. HRC 55 yataya 41 mm³ — kusintha kwa 15% poyerekeza ndi HRC 50 koma kusintha kwathunthu kwa 7 mm³. Lamulo lochepetsa kubwerera likuonekeratu: kuwonjezeka kwa kukana kutopa kuchokera ku HRC 50 kupita ku HRC 55 kuli kochepa, pomwe kutayika kwa kulimba kwa kukhudza ndikofunikira. Mayeso a Charpy V-notch pa zitsanzo zomwezo adawonetsa kuti mphamvu ya kukhudza yatsika kuchokera pa 24 J pa HRC 50 mpaka 14 J pa HRC 55 — kuchepetsa kwa 42%. Mu ntchito yogwetsa pomwe adaputala iyenera kupirira kugunda kwa miyala mwachindunji, chiopsezo chowonjezeka cha kusweka kwa HRC 55 chimaposa kuwonjezeka kwa 15% kwa moyo wa kutopa.

Deta yoyeserayi ikutsogolera malingaliro athu pazinthu zomwe timapangira. Pakusuntha nthaka m'dothi lamchenga kapena lopanda madzi — komwe kusweka ndiko njira yayikulu yowonongera — tikupangira HRC 50–52 kuti igwiritsidwe ntchito nthawi yayitali popanda kusweka kosavomerezeka. Pakugwetsa kapena kufukula miyala — komwe kukhudzidwa kwambiri — tikupangira HRC 46–48 kuti isunge kulimba kwa kugwedezeka pamene ikukwaniritsabe kukana kusweka kovomerezeka. Akatswiri ogwetsa aku Japan omwe timapereka ku Tokyo ndi Osaka akhazikitsa ma 60Si2Mn retainer clips pa HRC 46–48, ndipo kugwiritsa ntchito kwawo adaputala pachaka pa PC350 excavator iliyonse kumakhala pafupifupi ma adapter 36 — m'malo amodzi maola 10 aliwonse ogwira ntchito — poyerekeza ndi ma adapter 48 pachaka pa HRC 38–42 kuchokera kwa omwe akupikisana nawo.

Ndemanga za Makasitomala: Njira Yogulitsira Zogulitsa ndi Kusanthula Kubweza Chitsimikizo

Kampani yogawa zinthu ku Japan yomwe ili ku Yokohama ili ndi ma adapter a Komatsu bucket teeth a kukula 18 ochokera ku fakitale yathu. Amapereka makasitomala pafupifupi 350 ofufuza zinthu zakale m'chigawo cha Kanto, kuphatikizapo ma archer ang'onoang'ono (PC30–PC70) okonzanso nyumba mpaka ma archer akuluakulu owononga nyumba (PC490–PC800) owononga nyumba zazitali. Kampani yogawa zinthu zakale imalamula ma adapter 5,000–8,000 m'magawo atatu aliwonse. Mu 2024, adanenanso kuti pali chitsimikizo cha 1.2% pa ma adapter athu - mayunitsi 96 mwa 8,200 omwe adatumizidwa - poyerekeza ndi 3.8% ya omwe adapereka kale.

Tinasanthula ma adapter 96 omwe adabwezedwa. Kusanthula: ma adapter 42 anali atawonongeka kwambiri kuposa nthawi yogwiritsidwa ntchito pamlingo wapamwamba kuposa avareji - kunachokera kwa makasitomala omwe ankawagwiritsa ntchito pokumba miyala popanda ntchito yayikulu. Ma adapter 31 anali ndi chibowo cha pin chosweka kapena chosokonekera - kunachokera kwa ogwira ntchito omwe ankagwiritsa ntchito mphamvu ya gulu la anthu kuti adule mwala kuchokera mu ngalande yotsekedwa, zomwe zinapangitsa kuti phokoso likhale lopindika kwambiri kuposa mphamvu ya pin boss ya 180 kN yopindika ya adapter ya PC200. Ma adapter 12 anali atataya dzino chifukwa cha kulephera kwa retainer clip - pamagulu omwe adatumizidwa tisanasinthe kupita ku 60Si2Mn clips. Ma adapter 11 sanali, kwenikweni, malonda athu - anali ma adapter opikisana nawo omwe adaphatikizidwa molakwika ndi nyumba yosungiramo katundu ya wogulitsa mu gulu lobwezera. Pambuyo pokonza zobweza zomwe sizinali zathu, chiwongola dzanja chenicheni cha chitsimikizo chinali 1.04%. Woyang'anira kugula wa wogulitsa anandiuza kuti: "Tinkagwiritsa ntchito bajeti ya 5% ya ndalama zogulira ma adapter kuti tibweze chitsimikizo. Ndi malonda anu, tili pa 1.2%. Kumeneko ndi kusunga zinthu zenizeni."

Pa msika waku Japan, mbiri yoyendetsera ma adapter imatsatira njira ya nyengo. Kufunika kumawonjezeka mu Epulo (kuyambira chaka chandalama, pamene bajeti yomanga imakhala yatsopano) ndi Okutobala (kumayambiriro kwa nthawi yogwetsa nyengo yachilimwe). Lamulo la chitetezo cha wogulitsa ndi: mayunitsi osachepera 3,000 pa mayunitsi asanu ndi limodzi omwe amayenda mwachangu kwambiri (PC78, PC128, PC138, PC200, PC228, PC400), mayunitsi 1,500 pa kukula kwapakati, ndi mayunitsi 500 pa kukula kwakukulu kwa makina okumba. Timasunga nthawi yotsogolera ya masiku 45 pa kukula kokhazikika ndi masiku 60 pa mitundu yolemera. Izi zimathandiza wogulitsa kuti agwire ntchito ndi ma stock turns a 4.5 pachaka - pamwamba pa avareji ya makampani ya ma turns atatu - podalira kudziwiratu kwa nthawi yathu yopangira.

Kafukufuku: Gulu Logwetsa Mano ku Tokyo Lachepetsa Kutaya Mano ndi 75%

Kampani yogwetsa ku Tokyo yomwe imagwiritsa ntchito makina ofukula a PC350 asanu ndi atatu ndi makina atatu ofukula a PC490 inagwetsa pafupifupi nyumba 14 zolimbikitsidwa za konkire pachaka — nyumba zamaofesi, malo oimika magalimoto, ndi nyumba zogona mpaka zipinda zisanu ndi ziwiri. Asanafike chaka cha 2024, adapeza ma adaputala a mano a ndowa kuchokera kwa ogulitsa ambiri ku Osaka. Chiŵerengero cha mano a m'gulu lankhondo chinali 0.14 pa makina aliwonse patsiku logwirira ntchito — zomwe zikutanthauza kuti gulu lankhondolo linakumana ndi vuto la kutaya mano masiku 4.2 aliwonse ogwira ntchito m'makina 11 onse. Chochitika chilichonse chinkafuna kuyima kwa mphindi 35-45 (kuti mupeze ndikupeza nsonga ya dzino lotayika, kuyang'ana adaputala, ndikuyika ina), ndikugwiritsa ntchito maola 3.2 ogwira ntchito patsiku pa gululo.

Mu Januwale 2024, manejala wa zombo anatilumikizana nafe titamva za zomwe tidasankha pa chiwonetsero cha zamalonda cha JCEA. Tinapereka ma adapter 500 olemera (HRC 50 grade yokhala ndi ma clip 60Si2Mn) a zombo za PC350 ndi 200 a zombo za PC490 — zonse zovomerezeka ndi CMM zokhala ndi kutsata bwino. Tinaperekanso masiku awiri a maphunziro okhazikitsa pamalopo: (1) torque yoyenera ya pini yosungira ndi clip — 45 Nm ya PC350 ndi 75 Nm ya PC490, yoyezedwa ndi wrench ya torque, osati "kumva"; (2) njira zowunikira zowonera za kuvala kwa adaputala — m'malo mwake pamene m'lifupi mwa nsonga ya mphuno yatha ndi 5 mm kuchokera pamlingo woyambirira; ndi (3) ndondomeko yosinthira clip — maola 200 aliwonse ogwirira ntchito mosasamala kanthu za momwe mawonekedwe akuwonekera.

M'miyezi 12 pambuyo pa kusinthaku, chiŵerengero cha kutaya mano m'gulu la ndege chinatsika kuchoka pa zochitika 0.14 patsiku la makina kufika pa zochitika 0.035 - kutsika kwa 75%. Kuyima konse kosakonzedwa kwa kutaya mano kunatsika kuchoka pa zochitika 511 m'gulu lonselo mu 2023 kufika pa zochitika 128 mu 2024. Kutayika kwa maola ogwira ntchito kunatsika kuchoka pa maola 3.2 patsiku kufika pa maola 0.8 patsiku - kubwezeretsa ndalama zokwana $46,000 pachaka. Woyang'anira magalimoto ananena kuti awiri mwa ma PC350 adadutsa mu projekiti yonse yogwetsa - miyezi inayi ya masiku 14 - popanda kutaya dzino ngakhale limodzi. "Zimenezo sizinachitikepo ndi ma adapter akale," adatero mu foni yathu yotsatira.Malangizo omanga a OSHAKukonza zingwe ndi zida zolemera kumagogomezera kufunika kosamalira bwino zida zogwirira ntchito pansi, ndipo kuchepetsa kutaya mano mwadzidzidzi kumathandiza mwachindunji kuti ntchito zowononga zikhale zotetezeka mwa kuchotsa kuyimitsa makina kosakonzekera pafupi ndi malo ogwetsera omwe akugwira ntchito.

Kwa ogulitsa aku Japan ndi makasitomala awo a magalimoto, uthenga wochokera mu kafukufukuyu ndi wakuti: mtengo wa adaputala — ¥3,500–¥8,000 pa unit kutengera kukula — si muyeso woyenera. Muyeso woyenera ndi mtengo pa ola limodzi logwirira ntchito. Adaputala ya PC350 yomwe imadula ¥6,000 ndipo imatha maola 250 isanathe kusinthidwa imadula ¥24 pa ola limodzi. Adaputala wopikisana naye pa ¥4,500 yomwe imatha maola 150 imadula ¥30 pa ola limodzi. Adaputala yapamwamba kwambiri imasunga ¥6 pa ola limodzi — ndipo pamakina omwe amagwira ntchito maola 2,500 pachaka, ndi ¥15,000 pa makina pachaka. Woyang'anira magalimoto akachulukitsa zimenezo ndi makina 350 ofukula m'malo mwa makasitomala a ogulitsa, ndalama zomwe zingasungidwe pachaka ndi ¥5.25 miliyoni — ndipo zimenezo zisanachitike kuwerengera ndalama zomwe zasungidwa nthawi yochepa chifukwa cha kutayika kwa mano pang'ono.

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