Chitsulo chosapanga dzimbiri chimabwera m'magulu angapo omaliza.Ndikofunikira kudziwa kuti zomalizazi ndizotani komanso chifukwa chake zili zofunika.Zatsopano zatsopano muukadaulo wa abrasive zimatha kuchepetsa njira zoperekera kumalizidwa komwe mukufuna, kuphatikiza gloss yofunidwa.
Chitsulo chosapanga dzimbiri chikhoza kukhala chovuta kugwira nacho ntchito, koma chotsirizidwacho chimapereka chimodzi mwa maonekedwe abwino kwambiri ndipo chimapangitsa kuti ntchito yonse ikhale yoyenera. Zimavomerezedwa kuti kugwiritsa ntchito grit yabwino mu ndondomeko ya mchenga kungathe kuchotsa zojambula zam'mbuyo ndi kukonza mapeto ake, koma pali njira zambiri zomwe muyenera kuzidziwa mukamagwiritsa ntchito ma grit ambiri kuti mukwaniritse zomwe mukufuna.
Chitsulo chosapanga dzimbiri chimabwera m'magulu angapo omaliza.Ndikofunikira kudziwa kuti zomalizazi ndizotani komanso chifukwa chake zili zofunika.Zatsopano zatsopano muukadaulo wa abrasive zimatha kuchepetsa njira zoperekera kumalizidwa komwe mukufuna, kuphatikiza gloss yofunidwa.
The Specialty Steel Industry of North America (SSINA) imafotokoza miyezo yamakampani komanso komwe zinthu zimagwiritsa ntchito manambala omaliza osiyanasiyana.
No.
No. 2B yatha.Pamwambapa, chowala, chozizira chozizira chimakhala ngati galasi lamtambo ndipo sichifuna masitepe omaliza.Zigawo zomaliza za 2B zimaphatikizapo mapeni a chilengedwe chonse, zipangizo zamafakitale, zodula, zida za mphero zamapepala ndi zida zapaipi.
Komanso m'gulu la 2 ndi kumaliza kwa 2D. Kutsirizitsa uku ndi yunifolomu, matte siliva imvi kwa zokometsera zowonda kwambiri, makulidwe ake omwe achepetsedwa ndi kuzizira kozizira pang'ono kutsirizitsa ndondomeko monga momwe nthawi zambiri amagwiritsidwa ntchito ndi fakitale finish.Pickling kapena descaling imafunika pambuyo pa chithandizo cha kutentha kuchotsa chromium.Pickling ikhoza kukhala sitepe yomaliza yopanga chithandizo chapamwamba.
Polish No. 3 imadziwika ndi mizere yayifupi, yokhuthala, yofananira. Imapezedwa ndi kupukuta kwamakina ndi ma abrasives otsogola pang'onopang'ono kapena kudutsa ma coil kudzera paodzigudubuza apadera omwe amakanikizira mawonekedwe pamwamba, kufanizira mawonekedwe akuvala kwamakina.
Kwa makina opukuta, 50 kapena 80 grit amagwiritsidwa ntchito poyambirira, ndipo 100 kapena 120 grit amagwiritsidwa ntchito pomaliza kupukuta.Kuuma kwapamwamba kumakhala ndi roughness (Ra) ya ma microinchi 40 kapena kuchepera. , ndipo zida zasayansi ndizomaliza No.
No. es.
Kuvuta kwapamtunda nthawi zambiri kumakhala Ra 25 µin.kapena kuchepera.Mapetowa amagwiritsidwa ntchito kwambiri m'malesitilanti ndi zida zakukhitchini, malo osungiramo zinthu, kukonza chakudya ndi zida zamkaka.Monga Finish No. 3, ngati wogwiritsa ntchito akufunika kuphatikiza ma welds kapena kumaliza zina zomaliza, mzere wopukutidwa womwe umatuluka nthawi zambiri umakhala wautali kuposa mzere wa chinthucho wopukutidwa ndi wopanga, madera opukutira ndi zida za chipatala zomwe zimaphatikizirapo zida za chipatala. mapanelo owongolera, ndi zoperekera madzi.
Polish No. 3 imadziwika ndi mizere yayifupi, yokhuthala, yofananira. Imapezedwa ndi kupukuta kwamakina ndi ma abrasives otsogola pang'onopang'ono kapena kudutsa ma coil kudzera paodzigudubuza apadera omwe amakanikizira mawonekedwe pamwamba, kufanizira mawonekedwe akuvala kwamakina.
Finish No. 7 imakhala yonyezimira kwambiri ndipo imakhala ndi mawonekedwe ngati galasi. Wopukutidwa mpaka 320 grit ndi kupukutidwa No. 7 mapeto nthawi zambiri amapezeka muzitsulo zazitsulo, zokongoletsera zokongoletsera ndi makoma a khoma.
Pakhala pali kupita patsogolo kwakukulu kwa ma abrasives omwe amagwiritsidwa ntchito kuti akwaniritse izi, kuthandiza opanga kupanga mbali zambiri motetezeka, mofulumira komanso mopanda mtengo.
Ma abrasives awa amapereka mabala ofulumira, moyo wautali, ndi kuchepetsa chiwerengero cha masitepe ofunikira kuti ntchitoyi ichitike.Mwachitsanzo, chowombera chokhala ndi ma microcracks mu particles za ceramic chimakulitsa moyo wake pang'onopang'ono ndipo chimapereka mapeto osagwirizana.
Kuonjezera apo, matekinoloje ofanana ndi abrasives ophatikizana ali ndi tinthu tating'onoting'ono tomwe timagwirizanitsa kuti tidule mofulumira ndikupereka mapeto abwino.Zimafunika masitepe ochepa komanso zowonongeka kuti zigwire ntchitoyo, ndipo ambiri ogwira ntchito amawona bwino kwambiri komanso kusunga ndalama.
Michael Radaelli is Product Manager at Norton|Saint-Gobain Abrasives, 1 New Bond St., Worcester, MA 01606, 508-795-5000, michael.a.radaelli@saint-gobain.com, www.nortonabrasives.com.
Opanga amatsutsidwa kuti amalize ngodya ndi ma radii a zitsulo zosapanga dzimbiri.Kuphatikiza ma welds ovuta kufikako ndi kupanga madera, ali ndi njira zisanu zomwe zimafuna gudumu lopera, gudumu lalikulu la ma grits angapo, ndi gudumu lopukuta yunifolomu.
Choyamba, ogwira ntchito amagwiritsa ntchito gudumu lopukuta kuti apange zozama zakuya pazigawo zazitsulo zosapanga dzimbiri.Magudumu opukuta nthawi zambiri amakhala olimba komanso osakhululuka, kuyika wogwiritsa ntchito pazovuta poyamba.Nyengo yopera inali yowononga nthawi ndipo idakali zotsalira zomwe zinayenera kuchotsedwa ndi masitepe atatu owonjezera a pad kumaliza masitepe a yunifolomu pamwamba pa magudumu a tirigu.
Posintha gudumu lopera ku gudumu la ceramic lobe, wogwira ntchitoyo adatha kumaliza kupukuta mu sitepe yoyamba.Kusunga ndondomeko yofanana ya grit monga gawo lachiwiri, wogwira ntchitoyo adalowetsa mapepala a square ndi gudumu lakuthwa, kukonza nthawi ndi kumaliza.
Kuchotsa 80-grit square pad ndi m'malo mwake ndi mandrel osalukidwa ndi tinthu tating'onoting'ono totsatiridwa ndi 220-grit non-woven mandrel amalola wogwiritsa ntchito kupanga sheen yomwe akufuna komanso kumaliza kwathunthu ndikuchotsa kufunikira kwa Gawo lomaliza ndi njira yoyambirira (gwiritsani ntchito gudumu la mgwirizano kuti mutseke sitepe).
Chifukwa cha kusintha kwa mawilo a flapper ndi teknoloji yopanda nsalu, chiwerengero cha masitepe chachepetsedwa kuchoka pa zisanu mpaka zinayi, kuchepetsa nthawi yomaliza ndi 40%, kupulumutsa ndalama za ntchito ndi katundu.
Pakhala kupita patsogolo kwakukulu kwa ma abrasives omwe amagwiritsidwa ntchito kuti akwaniritse izi, kuthandiza opanga kupanga magawo ambiri motetezeka, mwachangu komanso motsika mtengo.
WELDER, yemwe kale ankatchedwa Practical Welding Today, akusonyeza anthu enieni amene amapanga zinthu zimene timagwiritsa ntchito komanso ntchito tsiku lililonse. Magaziniyi yakhala ikuthandiza anthu ku North America kwa zaka 20.
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