Ndakhala ndikugwira ntchito zotsalira za owerenga - ndikadali ndi magawo angapo oti ndilembe ndisanabwerenso.Ngati munanditumizira funso ndipo sindinaliyankhe, chonde dikirani, funso lanu lingakhale lotsatira.Poganizira zimenezo, tiyeni tiyankhe funsolo.
Q: Tikuyesera kusankha chida chomwe chidzapereke mainchesi 0.09.utali wozungulira.Ndinaponyera kunja gulu la ziwalo zoyesera;cholinga changa ndikugwiritsa ntchito sitampu yomweyo pazinthu zathu zonse.Kodi mungandiphunzitse kugwiritsa ntchito 0.09 ″ kulosera utali wopindika?maulendo ozungulira?
A: Ngati mukupanga mpweya, mutha kulosera utali wopindika pochulukitsa kutsegulira kwa kufa ndi peresenti kutengera mtundu wazinthu.Mtundu uliwonse wazinthu uli ndi kuchuluka kwa magawo.
Kuti mupeze maperesenti a zida zina, mutha kufananiza mphamvu zawo zolimba ndi 60,000 psi kulimba kwazomwe timafotokozera (chitsulo chochepa cha carbon cold rolled steel).Mwachitsanzo, ngati zinthu zanu zatsopano zili ndi mphamvu zolimba za 120,000 psi, mutha kulingalira kuti kuchuluka kwake kudzakhala kuwirikiza kawiri poyambira, kapena pafupifupi 32%.
Tiyeni tiyambe ndi zofotokozera zathu, chitsulo chochepa cha carbon chozizira chokhala ndi mphamvu ya 60,000 psi.Mapangidwe amkati amkati mwazinthu izi ali pakati pa 15% ndi 17% ya kufa kutsegulira, kotero nthawi zambiri timayamba ndi 16% yogwira ntchito.Mtundu uwu ndi chifukwa cha kusiyana kwawo kwakuthupi, makulidwe, kuuma, kulimba kwamphamvu, ndi mphamvu zokolola.Zonsezi zakuthupi zimakhala ndi zololera zosiyanasiyana, kotero ndizosatheka kupeza chiwerengero chenichenicho.Palibe zidutswa ziwiri zomwe zikufanana.
Poganizira zonsezi, mumayamba ndi wapakati wa 16% kapena 0.16 ndikuchulukitsa ndi makulidwe azinthuzo.Chifukwa chake, ngati mukupanga zinthu za A36 zazikulu kuposa mainchesi 0.551.Ndi kufa kotseguka, utali wanu wamkati uyenera kukhala pafupifupi 0.088 ″ (0.551 × 0.16 = 0.088).Mudzagwiritsa ntchito 0.088 ngati mtengo woyembekezeka wa bend wamkati womwe mumagwiritsa ntchito popereka ma bend allowance ndi mawerengero ochotsera bend.
Ngati nthawi zonse mumapeza zinthu kuchokera kwa wothandizira yemweyo, mudzatha kupeza peresenti yomwe ingakufikitseni pafupi ndi ma bend radius omwe mukupeza.Ngati zinthu zanu zimachokera kwa ogulitsa angapo osiyanasiyana, ndi bwino kusiya mtengo wowerengeka wapakati, chifukwa zinthu zakuthupi zimatha kusiyana kwambiri.
Ngati mukufuna kupeza bowo lomwe lingapereke utali wamkati mwa bend, mutha kutembenuza formula:
Kuchokera apa mutha kusankha bowo lakufa lomwe lili pafupi kwambiri.Zindikirani kuti izi zikuganiza kuti utali wamkati wa bend yomwe mukufuna kuti mukwaniritse ikufanana ndi makulidwe azinthu zomwe mukupangira mpweya.Kuti mupeze zotsatira zabwino, yesani kusankha malo otseguka omwe ali ndi utali wopindika mkati womwe uli pafupi kapena wofanana ndi makulidwe azinthuzo.
Mukaganizira zonsezi, dzenje lomwe mwasankha limakupatsani utali wamkati.Komanso onetsetsani kuti nkhonya utali wozungulira sikudutsa utali wopindika wa mpweya muzinthuzo.
Kumbukirani kuti palibe njira yabwino yolosera mkati mwa bend radii yopatsidwa mitundu yonse ya zinthu.Kugwiritsa ntchito maperesenti awa amtundu wa chip ndi lamulo lolondola kwambiri.Komabe, zingakhale zofunikira kusinthana mauthenga ndi mtengo wamtengo wapatali.
Q: Posachedwapa ndalandira mafunso angapo okhudza kuthekera kwa magnetizing chida chopinda.Ngakhale sitinazindikire kuti izi zikuchitika ndi chida chathu, ndili ndi chidwi chofuna kudziwa kukula kwa vutoli.Ndikuwona kuti ngati nkhunguyo ili ndi maginito kwambiri, chopandacho chingathe "kumamatira" ku nkhungu ndipo sichimapangika mosasinthasintha kuchokera ku chidutswa chimodzi kupita ku china.Kupatula apo, kodi palinso nkhawa zina?
Yankho: Mabulaketi kapena mabulaketi omwe amathandizira kufa kapena kuyanjana ndi mabuleki osindikizira nthawi zambiri sakhala ndi maginito.Izi sizikutanthauza kuti pilo wokongoletsera sungakhale ndi maginito.Izi sizingatheke.
Komabe, pali tizidutswa tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'onoting'ono ta magnetized, kaya ndi nkhuni pakupanga masitampu kapena ma radius gauge.Kodi vuto limeneli ndi lalikulu bwanji?kwambiri.Chifukwa chiyani?Ngati kachidutswa kakang'ono kameneka sikamagwidwa mu nthawi, akhoza kukumba ntchito pamwamba pa bedi, kupanga malo ofooka.Ngati mbali ya maginito ndi yokhuthala kapena yayikulu mokwanira, imatha kupangitsa kuti zinthu za bedi ziwuke kuzungulira m'mphepete mwa choyikapo, ndikupangitsanso kuti mbale yapansi ikhale yosafanana kapena yofanana, zomwe zimakhudza mtundu wa gawo lomwe likupangidwa.
Q: M'nkhani yanu Momwe Ma Curves Amakhalira Akuthwa, mudatchulapo formula: Punch Tonnage = Gasket Area x Kukula kwa Zinthu x 25 x Zinthu Zofunika.Kodi 25 imachokera kuti mu equation iyi?
A: Fomulayi imatengedwa ku Wilson Tool ndipo imagwiritsidwa ntchito powerengera nkhonya tonnage ndipo ilibe kanthu kochita ndi kuumba;Ndidazisintha kuti ndidziwe mozama komwe kupindika kumakhala kolowera.Mtengo wa 25 mu chilinganizo umatanthawuza mphamvu ya zokolola za zinthu zomwe zimagwiritsidwa ntchito popanga ndondomekoyi.Mwa njira, nkhaniyi sichimapangidwanso, koma ili pafupi ndi chitsulo cha A36.
Zachidziwikire, zambiri zimafunikira kuti muwerenge molondola malo opindika ndi kupindika kwa nsonga ya nkhonya.Kutalika kwa bend, malo olumikizirana pakati pa mphuno ya nkhonya ndi zinthu, komanso m'lifupi mwa kufa kumagwira ntchito yofunika.Kutengera momwe zinthu ziliri, nkhonya yomweyi yazinthu zomwezo zimatha kupindika ndikupindika bwino (mwachitsanzo, kupindika ndi utali wodziwikiratu wamkati ndipo palibe zopindika pamzere).Mupeza chowerengera chakuthwa kwambiri patsamba langa chomwe chimatengera mitundu yonseyi.
Funso: Kodi pali njira yochotsera bend kuchokera pa counter?Nthawi zina akatswiri athu osindikizira ma brake amagwiritsa ntchito mabowo ang'onoang'ono a V omwe sitinawawerengere papulani yapansi.Timagwiritsa ntchito kuchotsera kwanthawi zonse.
Yankho: inde ndi ayi.Ndiloleni ndifotokoze.Ngati ikugwada kapena kuponda pansi, ngati m'lifupi mwa nkhungu ikufanana ndi makulidwe a zinthu zopangira, chotchinga sichiyenera kusintha kwambiri.
Ngati mukupanga mpweya, utali wamkati wa bend umatsimikiziridwa ndi dzenje la kufa ndipo kuchokera pamenepo mumatenga radius yomwe imapezeka mukufa ndikuwerengera kuchotserako.Mutha kupeza zambiri zanga pankhaniyi pa TheFabricator.com;fufuzani "Benson" ndipo muwapeza.
Kuti ma airforming agwire ntchito, ogwira ntchito za uinjiniya adzafunika kupanga slab pogwiritsa ntchito bend subction kutengera utali woyandama wopangidwa ndi kufa (monga tafotokozera mu "Bend Inside Radius Prediction" koyambirira kwa nkhaniyi).Ngati woyendetsa wanu akugwiritsa ntchito nkhungu yomweyi monga gawo lomwe linapangidwira kuti lipange, gawo lomaliza liyenera kukhala loyenera ndalamazo.
Nachi china chocheperako - matsenga ang'onoang'ono ochokera kwa wowerenga wakhama akupereka ndemanga pagawo lomwe ndidalemba mu Seputembara 2021 "Ma braking Strategies for T6 Aluminium".
Yankho la owerenga: Choyamba, mwalemba zolemba zabwino kwambiri pazitsulo zogwira ntchito.Ndikukuthokozani chifukwa cha iwo.Pankhani yowonjezereka yomwe mudafotokozera mugawo lanu la Seputembala 2021, ndimaganiza kuti ndigawana nawo malingaliro anga.
Nditayamba kuona chinyengo cha annealing zaka zambiri zapitazo, ndinauzidwa kuti ndigwiritse ntchito nyali ya oxy-acetylene, kuyatsa mpweya wa acetylene wokha, ndikupenta mizere ya nkhungu ndi mwaye wakuda kuchokera ku mpweya wopsereza wa acetylene.Zomwe mukufunikira ndi mzere wakuda kwambiri kapena wakuda pang'ono.
Kenaka yatsani mpweya ndi kutentha waya kuchokera kumbali ina ya gawolo ndi kuchoka pamtunda wokwanira mpaka waya wachikuda womwe mwangowumata uyamba kuzimiririka kenako nkuzimiririka.Uku kumawoneka ngati kutentha koyenera kulumikiza aluminiyumu yokwanira kupereka mawonekedwe a digirii 90 popanda zovuta zilizonse.Simufunikanso kupanga gawoli likadali lotentha.Mutha kuzisiya kuti zizizizira ndipo zidzasungidwabe.Ndikukumbukira ndikuchita izi pa 1/8 ″ wandiweyani 6061-T6 pepala.
Ndakhala ndikukhudzidwa kwambiri ndi kupanga zitsulo zolondola kwazaka zopitilira 47 ndipo ndakhala ndi luso lobisala.Koma patapita zaka zambiri, sindimayiyikanso.Ndikudziwa zomwe ndikuchita!Kapena mwina ndili bwino pobisala.Mulimonse mmene zingakhalire, ndinatha kugwira ntchitoyo m’njira yandalama kwambiri yothekera ndi zokometsera zochepa.
Ndikudziwa kanthu kapena ziwiri zokhudza kupanga zitsulo, koma ndikuvomereza kuti sindine wosadziwa.Ndi mwayi waukulu kwa ine kugawana nanu chidziwitso chomwe ndapeza pa moyo wanga.
One more thing I know: in general, you all have a lot of experience and knowledge. Let’s say you want to share interesting tips, work habits, or just tidbits with other readers. Please write it down or draw it and send it to me at steve@theartofpressbrake.com.
Palibe chitsimikizo kuti ndigwiritsa ntchito imelo yanu patsamba lotsatira, koma simudzadziwa.Ndikhoza basi.Kumbukirani, tikamagawana zambiri ndi zomwe takumana nazo, timakhala abwinoko.
FABRICATOR ndi magazini otsogola ku North America opanga zitsulo komanso kupanga zitsulo.Magaziniyi imasindikiza nkhani, zolemba zamakono ndi nkhani zopambana zomwe zimathandiza opanga kupanga ntchito yawo bwino.FABRICATOR wakhala akugulitsa kuyambira 1970.
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