Investment Casting Surface Itha: Makhalidwe a Ra, Zoyembekeza, ndi Kufotokozera Mwanzeru

Funsani ogula khumi kuti "kumaliza bwino kwapamwamba" kumatanthauza chiyani pakuponya ndipo mudzapeza mayankho khumi osiyana: "osalala," "monga makina," "opanda maenje," "kuposa mchenga," "Ra 3.2 paliponse." Ambiri mwa mayankhowo amawononga ndalama - nthawi zambiri kuposa momwe amafunikira. Kumaliza pamwamba ndi chimodzi mwazofunikira kwambiri pakugula zinthu, komanso chimodzi mwazosamvetsetseka. Bukuli likufotokoza zomwe kutulutsa kumabweretsa, momwe ma Ra values ​​amagwirira ntchito pamalo oponyedwa, komanso momwe mungatchulire kumaliza kuti muthe kulipira zomwe gawo lanu likufuna - palibenso china.

Kodi "Surface Finish" Amatanthauza Chiyani Pakuponya

Kumbali yopangidwa ndi makina, kumalizidwa kwapamwamba ndi nkhani ya geometry ya zida, kuchuluka kwa chakudya ndi liwiro la spindle - njira yoyendetsedwa yomwe imatulutsa zotsatira zoyezeka, zobwerezabwereza. Pakuponyera, ngati-cast pamwamba ndi kopi ya mkati mwa chipolopolo cha ceramic: imalandira chipolopolo cha chipolopolo, chosinthidwa ndi momwe chitsulo chimadzaza ndi kulimba. Kutengerako ndikwabwino kwambiri - chifukwa chake kuyika ndalama kumasankhidwa pazodzikongoletsera komanso magwiridwe antchito - koma ndi mtundu wina wosalala kuposa makina, ndipo ziyenera kufotokozedwa mosiyana.

Muyezo wokhazikika ndi Ra (average roughness) , mu ma micrometer (µm). Monga chitsanzo chaukali pakupanga ndalama:

• Ra 0.8–1.6 µm - malo abwino ngati oponyedwa, otheka pazigawo zoyang'ana zipolopolo za tizigawo tating'ono ta silika; nthawi zambiri zabwino kwambiri zomwe mungadalire
• Ra 1.6–3.2 µm - mtundu wamalonda wamalonda wazinthu zambiri zopangira zitsulo ndi chitsulo
• Ra 3.2-6.3 µm - yachibadwa kwa zigawo madzi galasi ndondomeko ndi castings zazikulu; akadali bwino kuposa kuponya mchenga
• Ra 6.3-12.5 µm - gawo la mchenga; komanso kumene malo olemera kwambiri oponyedwa pamagulu akuluakulu a ndalama amatha kugwera
• Ra 0.4–1.6 µm - dziko lopangidwa ndi makina; zotheka kokha pochotsa zinthu

Kusiyana pakati pa "best as-cast" ndi "chinthu chilichonse chopangidwa ndi makina" ndi malire omwe zolakwika zambiri zimachitika.

Chifukwa chiyani Mawonekedwe a Investment Casting Ali Osiyana Ndi Kuponyera Mchenga

Zifukwa ziwiri, zonse ziyenera kumvetsetsa chifukwa zimafotokozera kusiyana kwa mtengo.

Ubwino wa zipolopolo. Chigoba cha silica sol ceramic chomwe chimagwiritsidwa ntchito popanga ndalama mwabwino kwambiri chimakhala ndi malo owoneka bwino, owundana mkati - makamaka wosanjikiza wa ceramic womwe umakopera sera ndi ukali wochepa. Zipolopolo zamagalasi amadzi ndizokulirapo komanso zotsika mtengo. Mchenga wa nkhungu woponyera mchenga ndi mchenga: njere zamtundu uliwonse zimasiya chizindikiro chake pakupanga, kutulutsa mawonekedwe owoneka bwino, owoneka bwino (komanso "sanding" wapamtunda pomwe mawonekedwewo amawombera nkhungu). Ichi ndichifukwa chake "ndikuponya, ndithudi ndizovuta" ndi malingaliro opangira mchenga - sizimangogwira ntchito popanga ndalama.

Palibe mzere wolekanitsa. Zida zoponyera mchenga ndi zoponyera zida zimakhala ndi mzere wolekanitsa pomwe magawo awiri a nkhungu amakumana, kuphatikiza mapini a ejector ndi ngodya zolembera. Kuponyera ndalama kulibe chimodzi mwa izi: ndondomeko ya sera ndi thupi lofunika kwambiri, kotero kuponyera kulibe kung'anima kolekanitsa ndipo palibe chofunikira. Kusiyanitsa kumodzi kumeneku kumachotsa mawonekedwe owoneka bwino a "kuponya" ndipo ndi chimodzi mwa zifukwa zazikulu zopangira ndalama zomwe zimatchulidwa pomwe mawonekedwe amafunikira - zida zapampu, zotchingira mavavu, mabatani agalimoto, zida zokongoletsera.

Zodzikongoletsera vs Zofunikira Zogwira Ntchito Pamwamba

Cholakwika chokwera mtengo kwambiri ndikusamalira zodzikongoletsera ngati zimagwira ntchito. Funso loti mufunse pamtundu uliwonse ndilakuti: Kodi pamwamba pake chimachita chiyani?

Malo ogwirira ntchito - nkhope zosindikizira, mipando yokhala ndi mipando, nkhope za gasket, malo othamanga, ma grooves omwe amatsogolera O-rings - ali ndi zofunikira zenizeni. Koma zindikirani zomwe sakhala nazo: kufunikira komaliza. Malo ogwirira ntchito amakhala opangidwa nthawi zonse, chifukwa kulolerana ndi kumaliza komwe amafunikira (Ra 0.8, flatness 0.05) sikungabwere kuchokera ku njira iliyonse yoponya. Chifukwa chake funso lomaliza pakupanga ndalama limayankhidwa nthawi zonse ndi "makina," ndipo ngati-cast Ra alibe ntchito pamenepo.

Zodzikongoletsera - zowoneka kunja kwa gawolo, thupi la valavu, nkhope ya bulaketi yomwe imawoneka pamalo opangira injini - ndipamene kumalizitsa kumafunika, komanso komwe kufotokozeredwa mochulukira. Chofunikira cha Ra 3.2 pagawo la galasi lamadzi chimakakamiza njira yokwera mtengo kwambiri ya silica sol kapena ntchito zina zophulitsa / zopukuta kuti zitheke kugwira ntchito. Zofunikira monga-cast Ra 6.3 zikanadutsanso chimodzimodzi.

Lamulo la chala chachikulu chomwe timagwiritsa ntchito ku Ningbo Ruican: tchulani kumalizidwa komwe kuli kofunikira poyang'ana kapena kumamatira kumamatira, ndikusunga kuti izi zikhale zenizeni - Ra 3.2 wa silika sol, Ra 6.3 wa galasi lamadzi, pokhapokha ngati mukufunikiradi bwino ndipo mwakonzeka kulipira.

Kumene Kumalizitsa Kufunika Kwambiri: Kupaka ndi Kuwononga

Pali malo amodzi ngati roughness ayenera kusamala kwenikweni: pomwe gawolo lidzapakidwa utoto, wokutidwa ndi ufa kapena electroplated. Pamalo okhotakhota amakhala ndi nsonga zakuthwa zomwe zimawonekera kudzera mu zokutira zopyapyala ("mapeyala alalanje"), ndipo zokutira zimatha kulumikiza maenje ndi matuza pambuyo pake. Pazigawo zopentidwa, ogula nthawi zambiri amatchula "wowomberedwa, kenako wopaka utoto" - kuphulitsa kumagwira ntchito ziwiri: kuyeretsa sikelo ndi kupanga mbiri ya nangula ya zokutira.

Pa zokutira ufa ndi e-coat, malo osalala ngati otayira (Ra 3.2–6.3) kuphatikiza chiphaso chophulika chopepuka chimapatsa katswiri, ngakhale kumaliza. Kuthamangitsa Ra 1.6 pakupanga konseko kusanawononge ndalama - zokutira zidzakweza nsonga zazing'ono, ndipo mtengo wopukutira pamalowo ndi wofunikira.

Momwe Mungatchulire Pamwamba Malizani Molondola

Malangizo othandiza pa RFQ yanu yotsatira:

1. Patulani malo opangidwa ndi makina komanso ngati-cast pachojambula. Lembani malo ogwirira ntchito ngati opangidwa ndi IT-grade kulolerana ndi Ra. Chongani ena onse monga akusewera ndi kuyitanidwa kwapadziko lonse lapansi.
2. State Ra kokha kumene izo zimatsimikiziridwa. Pamalo ngati akuponyedwa, muyeso wa Ra ndi wovuta (kufufuza kwa profilometer kudutsa malo opindika, ophulika amakhala phokoso). Kuyimba kowona ngati "as-cast Ra ≤ 6.3 µm, kuwomberedwa kwaphulitsidwa" kumayesedwa komanso moona mtima; "Ra 1.6 as-cast" siilipo ndipo idzagulidwa ngati kuti idapangidwa ndi makina.
3. Gwiritsani ntchito kuvomereza kowoneka ngati kuli kotheka. Pazodzikongoletsera, vomerezani zitsanzo zowoneka/analogi ("zofanana ndi zitsanzo zovomerezeka A") m'malo mwa nambala. Izi ndizomwe zimachitika m'makampani ndipo ndizovuta kwambiri kuposa kuyimba kwa Ra pamalo ophulika.
4. Gwirizanitsani dongosolo ndi dongosolo. Osatchulanso kumaliza kwa silika-sol-level pagawo lagalasi lamadzi, ndipo musalipire silika sol pongomaliza ngati kuphulika kukakwaniritsa zosowa zanu.
5. Funsani oyambitsa zomwe ali nazo. Woyambitsa yemwe amatchula kuthekera kwake kwenikweni ngati-cast, ndi zitsanzo, ndi mnzake; imodzi yomwe imalonjeza Ra 1.6 ngati-cast pa chilichonse ndi mitengo yomwe ili pachiwopsezo.

Kuphulika, Kugwedezeka ndi Kupukuta: The Finish Toolkit

Kupitilira monga-cast, pali mitundu ingapo yamankhwala otsika mtengo mpaka okwera mtengo omwe muyenera kudziwa:

• Kuwombera kuwombera (kofala, kuphatikizirapo): kumachotsa zotsalira za zipolopolo ndi sikelo, kumaliza kwa matte, kumatsegula pamwamba kuti ziphike. Muyezo pa pafupifupi ma castes athu onse.
• Kuphulika kwa mchenga/mikanda (kocheperako): ng'anjo yopepuka ya zodzikongoletsera kapena zigawo zopyapyala zomwe zimawombera kuphulika.
• Kugwedezeka kwamphamvu (kutsika mtengo): kumachotsa m'mphepete ndikuzungulira ngodya zakuthwa; zabwino kwa tizigawo tating'ono tating'ono tomwe timakhudza oyendetsa msonkhano.
• Kupukuta / kupukuta kwamakina: pokhapo pomwe pamwamba payenera kuwoneka ngati makina kapena galasi lomalizidwa; mtengo umakwera mofulumira ndi dera.
• Kusulira kwa mikanda yagalasi: kuwongolera, kumaliza kofananako kuphatikiza phindu la kupsinjika pang'ono; amagwiritsidwa ntchito pamalo odzikongoletsera komanso osamva kutopa.

Pazinthu zambiri zamafakitale, kuphulitsa kuwombera ndiko kumaliza kokhazikika ndipo kumakwaniritsa zofunikira. Njira iliyonse yopitilira pamenepo iyenera kukhala ndi chifukwa.

Mtengo Weniweni Wofotokozera Mochulukira Malire

Manambala a konkire amatsimikizira mfundoyo. Pa 2 kg zitsulo zopangira ndalama:

• As-cast Ra 6.3, adawomberedwa: mtengo woyambira - wophatikizidwa ndi mawuwo
• As-cast Ra 3.2 (silica sol surface): + 5-15% mtengo wa ndondomeko, nthawi zina ziro ngati chipolopolo chili bwino
• Malo opangira makina okha: + 20-40% mtengo wagawo lonse (nthawi yopangira makina opangira omwe ali pafupi ndi ukonde)
• Zodzikongoletsera zopukutidwa: + 30-60% kapena kupitilira apo

Chowonadi chosasangalatsa: kumalizidwa kwapamwamba ndi komwe ma foundries amapezanso malire kuchokera pazojambula zomwe zafotokozedwa mopitilira muyeso. Wogula yemwe amati "zosalala zonse" amapeza mawu omwe amalipira kupukuta omwe samawona. Wogula yemwe amati "makina magawo asanu ndi limodzi awa, phulitsa ena onse, avomereza ndi zitsanzo" amapeza mawu opikisana ndi gawo lomwe limagwira ntchito yake.

Chifukwa chiyani Ningbo Ruican Amasamala za Izi

Timapanga zitsulo zopangira silika ndi galasi lamadzi muzitsulo za carbon, alloy steel, chitsulo chosapanga dzimbiri ndi ductile iron, ndi malo ogulitsira a CNC m'nyumba komanso mphamvu zonse zochizira pamwamba pa kuphulika kupyolera mu kupukuta. Pamene tipenda chojambula, mawonekedwe a pamwamba ndi chimodzi mwa zinthu zoyamba zomwe timakambirana - osati chifukwa chakuti tikufuna kupeŵa ntchito, koma chifukwa chakuti akatswiri athu ogwira ntchito amaphunzitsidwa kuti alekanitse zomwe gawolo likufunikira kuchokera ku zomwe zojambulazo zikunena , ndikukuuzani kusiyana moona mtima. Zotsatira zake ndi mawu omaliza omwe mukufuna, operekedwa pamtengo womwe msika umafuna.

Titumizireni zojambula zanu ndi chiganizo chomveka bwino chazomwe zimagwira ntchito: tidzatsimikizira zomwe titha kukhala nazo, zomwe ziyenera kupangidwa, ndi zomwe mapeto anu ayenera kukhala.

Pezani ndemanga yomaliza ndi mawu anu otsatira pa www.kstcasting.com.