Investment Casting Surface Pedzisa: Ra Values, Zvinotarisirwa, uye Smart Kutsanangurwa

Bvunza vatengi gumi kuti "yakanaka pamusoro pekupedzisira" inorevei pakukanda uye iwe uchawana gumi mhinduro dzakasiyana: "yakapfava," "yakafanana nemichina," "hapana makomba," "zviri nani pane kukanda jecha," "Ra 3.2 kwese." Mazhinji emhinduro idzodzo dzinodhura mari - kazhinji yakawanda kupfuura yavanoda. Kupedzisa kwepamusoro ndechimwe chezvakanyanya kutsanangurwa zvinodiwa mukukanda kutenga, uye imwe yeinonyanya kusanzwisiswa. Gwaro iri rinotsanangura kuti chii chinoburitswa nekudyara mari, mashandiro aRa anobata panzvimbo yakakandwa, uye kuti ungatsanangura sei kupera kuitira kuti ubhadhare chaizvo izvo chikamu chako chinoda - hapana chimwe.

Chii chinonzi "Surface Finish" Zvinoreva paKukanda

Pachikamu chakagadzirwa, kupedzisa kwepamusoro inyaya yechishandiso geometry, chiyero chekudyisa uye spindle kumhanya - maitiro anodzorwa achiburitsa inoyerika, inodzokororwa mhedzisiro. Pakukanda, iyo as-cast surface ikopi yemukati meceramic shell: inogara nhaka yehukukutu hwegoko, inogadziriswa nemabatiro anoita simbi nekusimba. Iyo kopi yakanaka zvinoshamisa - ndizvo chaizvo nei kukanda mari kunosarudzirwa zvizorwa uye zvinoshanda zvikamu zvakafanana - asi imhando yakasiyana yekutsvedza pane kugadzira, uye inofanirwa kutsanangurwa zvakasiyana.

Chiyero chechiyero chinonzi Ra (avhareji roughness) , mumamita (µm). Seyakaomarara yepfungwa modhi yekudyara castings:

• Ra 0.8–1.6 µm - yakanaka se-yakandwa nzvimbo, inogoneka pane yakatarisana negoko rezvikamu zvidiki musilica sol process; kazhinji yakanakisa se-cast yaunogona kuvimba nayo
• Ra 1.6–3.2 µm - yakajairwa kutengeserana se-yakasirwa huwandu hwemasimbi mazhinji uye ductile iron investisiti
• Ra 3.2–6.3 µm - yakajairika kune yemvura girazi process zvikamu uye yakakura castings; zvichiri nani kupfuura kukanda jecha
• Ra 6.3–12.5 µm - nharaunda yekukanda jecha; zvakare uko kunorema se-kukanda nzvimbo pane hombe yekudyara castings inogona kumhara
• Ra 0.4–1.6 µm - nyika yakagadzirwa nemichina; zvinogoneka chete nekubvisa zvinhu

Mukaha uripo pakati pe "best as-cast" uye "chero machined surface" ndiwo muganho unoitika kukanganisa kwakawanda.

Nei Investment Casting Surfaces Yakasiyana Nejecha Castings

Zvikonzero zviviri, zvese zvakakosha kunzwisisa nekuti zvinotsanangura musiyano wemutengo.

Shell quality. Iyo silica sol ceramic goko rinoshandiswa mumhando yekukandira mari ine yakatsetseka, yakakora yemukati nzvimbo - chakanyanya dharumu layer inokopa wakisi patani nekudzika kwakashata. Magoko egirazi emvura akakora uye akachipa. Sand casting's mold surface, zvakanaka, jecha: tsanga dzega dzega dzinosiya zvadzo pakukanda, dzichiburitsa hunhu hwakakasharara, gritty pamusoro pekupedzisira (uye yemhando yepamusoro "sanding" yepasi apo patani inorira ichipokana ne mold). Ichi ndicho chikonzero "kukanda, hongu kwakashata" ipfungwa yekukanda jecha - haingoshandiswi pakutsvaga mari.

Hapana mutsara wekuparadzanisa. Kukandira jecha uye zvikamu zvekukandira zvinofa zvinotakura mutsara wekupatsanura panosangana mahafu maviri e mold, pamwe ne ejector pini nemakona ekudhirowa. Investment casting haina chimwe cheizvi: iyo wakisi pateni inhengo yakakosha, saka iyo yekukanda haina chekuparadzanisa flash uye hapana dhizaini inodiwa. Musiyano mumwe chete iwoyo unobvisa iyo inonyanya kuoneka "yekukanda kutarisa" cues uye ndicho chimwe chezvikonzero chikuru chekudyara zvikamu zvinotsanangurwa pane zvine chekuita nechitarisiko - zvikamu zvepombi, chidimbu chevharuvhu, mabhuraketi emotokari, hardware yekushongedza.

Cosmetic vs Functional Surface Zvinodiwa

Iyo yakanyanya kudhura yekutsanangura kukanganisa kubata nzvimbo yekuzora se inoshanda. Mubvunzo wekubvunza pamusoro pese ndewekuti: iyi nzvimbo inomboitei?

Nzvimbo dzinoshanda - zviso zvekuisa chisimbiso, zvigaro zvinotakura, zviso zvegasket, nzvimbo dzinomhanya, grooves inotungamira O-mhete - ine chaiyo yekuita zvinodiwa. Asi cherechedza izvo zvavasingawanzo kuve nazvo: se-cast-yekupedzisira inodiwa. Nzvimbo dzinoshanda dzinogara dzakagadzirwa zvakadaro, nekuti kushivirira uye kupera kwavanoda (Ra 0.8, flatness 0.05) haigone kubva kune chero maitiro ekukanda. Saka iyo inoshanda-yekupedzisira mubvunzo pane yekukanda mari inopindurwa nguva dzose ne "muchina iwo," uye iyo as-cast Ra haina basa ipapo.

Cosmetic nzvimbo - inoonekwa kunze kwechikamu, muviri wevharuvhu, chiso chebhureketi chinoonekwa mune injini bay - ndipo panoperera se-cast-inonyanya kukosha, uye uko kunyanya-kutsanangurwa kwakawanda. Iyo as-cast Ra 3.2 inodiwa pane yemvura girazi chikamu chinomanikidza inodhura silica sol process kana kuwedzera kuputika / kukwenenzverwa mashandiro kune zero inoshanda bhenefiti. An as-cast Ra 6.3 zvinodiwa zvingadai zvakapfuurawo.

Mutemo wechigunwe watinoshandisa kuNingbo Ruican: tsanangura se-cast kupedzisa chete pazvine basa nekuona kana kunotevera kunamatira kunamatira, uye chengetedza ichokwadi kune iyo maitiro - Ra 3.2 yesilica sol, Ra 6.3 yegirazi remvura, kunze kwekunge iwe uchinyatsoda zvirinani uye wakagadzirira kuibhadhara.

Ikoko Kunopedzisa Zvinonyanya Kukosha: Kupfeka uye Kuora

Pane imwe nzvimbo se-yakakandwa roughness inokodzera kutariswa chaiko: uko chikamu chichapendwa, chakaputirwa nehupfu kana electroplated. Nzvimbo dzakakasharara dzine nhongonya dzakapinza dzinoratidza kuburikidza nemucheka mutete ("orange peel"), uye machira anogona kubhuroka pamusoro pemakomba uye blister gare gare. Pazvikamu zvakapendwa, vatengi vanowanzotaura kuti "pfuti yakaputika, yozopendwa" - kuputika kunoita mabasa maviri: kuchenesa chiyero nekugadzira chimiro cheanchor yejasi.

Pakuputira hupfu uye e-jasi, nzvimbo yakatsetseka seyakakandwa (Ra 3.2–6.3) pamwe nepasi rinoputika rinopa nyanzvi, kunyange kupera. Kudzingirira Ra 1.6 pane yese yekukanda kusati kwapendiwa kutambisa mari - iyo yekupfekedza ichayera madiki madiki zvakadaro, uye mutengo wekuporishera nzvimbo dzakakandwa kusvika padanho rakakosha.

Matsananguriro Epamusoro Pedzisa Nemazvo

Inoshanda yekutsanangura nhungamiro kune yako inotevera RFQ:

1. Akapatsanura machina uye se-akakanda nzvimbo padhirowa. Maka nzvimbo inoshanda seyakagadzirwa neIT-giredhi kushivirira uye Ra. Maka kusara se-kukandwa neimwe callout yepasi rose.
2. State Ra chete painotariswa. Panzvimbo se-yakakandwa, kuyerwa kweRa kune hunyengeri (profilometer inoteedzera kune yakakombama, yakaputika nzvimbo ine ruzha). Kushevedzera kwechokwadi senge "as-cast Ra ≤ 6.3 µm, pfuti yaputika" inoedzwa uye yakatendeseka; "Ra 1.6 as-cast" haisi uye ichaiswa mutengo sekunge yakagadzirwa.
3. Shandisa kubvuma kwekuona pazvinogoneka. Nezvekushongedza, bvumirana nemufananidzo wekuona/analogi ("inofananidzwa nemuenzaniso A") pachinzvimbo chenhamba. Iyi ndiyo tsika yakajairika muindasitiri uye inotemeserwa zvakanyanya kupfuura kufona kweRa panzvimbo yakaputika.
4. Batanidza callout kune maitiro. Usataure kupedzisa silica-sol-level pachikamu chegirazi remvura, uye usabhadharire silica sol yekungopedza kana kuputika mushure mekunge chokwadi chasangana nezvaunoda.
5. Bvunza muvambi kuti chii chaizvo chavanobata. Inowanikwa inotora yako chaiyo se-cast kugona, ine masampuli, ishamwari; imwe inovimbisa Ra 1.6 se-yakandwa pane zvese iri mitengo iri munjodzi.

Kuputika, Kudonha uye Kupenya: The Finish Toolkit

Beyond as-cast, kune huwandu hwekuchipa-ku-kudhura kwepamusoro kurapwa kwakakosha kuziva:

• Shot blasting (yakawanda, inosanganisirwa): inobvisa masara egoko uye chiyero, yunifomu matte kupera, inovhura nzvimbo yekuputira. Yakajairwa pazvinenge zvese zvinokandwa zvedu.
• Kuputika kwejecha/bead (yakakwenenzverwa): simbi yakapfava yezvikamu zvekuzora kana zvikamu zvitete zvinopfura zvinoputika zvingapeen.
• Vibratory tumbling (cheap smoothing): deburrs edges uye kutenderera makona akapinza; yakanaka kune zvidimbu zvidiki zvine mipendero inobata vanobata magungano.
• Mechanical polishing / buffing: chete apo iyo nzvimbo inofanirwa kutaridzika yakagadzirwa kana girazi-yapera; mutengo unokwira nekukurumidza nenzvimbo.
• Girazi bead kupenengura: inodzorwa, yunifomu kupera pamwe nekupfava compressive stress inobatsira; inoshandiswa pazvizora uye kuneta-sensitive nzvimbo.

Kune akawanda maindasitiri castings, kuputika kwepfuti ndiko kupera kwekupedzisira uye kunosangana nezvinodiwa. Nhanho imwe neimwe inopfuura iyo inofanira kuva nechikonzero.

Mutengo Wechokwadi Wekunyanya Kutsanangura Pedzisa

Nhamba dzekongiri dzinoita pfungwa. Pane yakajairwa 2 kg simbi yekudyara kukanda:

• As-cast Ra 6.3, pfuti yakaputika: yekutanga mutengo - inosanganisirwa mune quote
• As-cast Ra 3.2 (silica sol surface): +5–15% mutengo wekuita, dzimwe nguva zero kana goko rakanaka zvakadaro
• Yakagadzirwa yakaoma nzvimbo chete: + 20-40% yakazara chikamu mutengo (machining nguva pane yekukanda iyo neimwe nzira iri padyo-mambure)
• Yakanatswa zvizorwa nzvimbo: + 30–60% kana kupfuura panzvimbo idzodzo

Chokwadi chisingafadzi: kupedzisa kwepamusoro ndiko uko vanowana vanodzoreredza muganho kubva kune-yakanyanya kudhirowa. Mutengi anoti "smooth it all" anowana quote inobhadhara kupukuta ivo vasingambooni. Mutengi anoti "muchina idzi nzvimbo nhanhatu, putika zvakasara, bvumidza nemuenzaniso" anowana quote yemakwikwi uye chikamu chinoita basa rayo.

Nei Ningbo Ruican Ane Hanya Nezveizvi

Isu tinogadzira silica sol uye mvura magirazi ekudyara magirazi mucarbon simbi, alloy simbi, Stainless simbi uye ductile iron, ine in-house CNC chitoro uye yakazara pamusoro pekurapa kugona kubva mukuputika kuburikidza nekupukuta. Patinoongorora dhirowa, chimiro chepamusoro ndechimwe chezvinhu zvekutanga zvatinokurukura - kwete nekuti isu tinoda kunzvenga basa, asi nekuti mainjiniya edu akadzidziswa kupatsanura izvo chikamu chinoda kubva pane izvo dhizaini inotaura , uye kukuudza mutsauko nekutendeseka. Mhedzisiro iyi quote yekupedzisa iwe yaunoda chaizvo, inounzwa nemutengo unodiwa nemusika.

Titumire dhirowa yako uye chirevo chakajeka chekuti ndeapi mapeji anoshanda: isu tinosimbisa izvo zvatinogona kubata se-kukanda, chii chinofanira kugadzirwa, uye chii chako chaicho chekupedzisa kunofanirwa kuve.

Tora wongororo yekupedzisa neako anotevera quote pa www.kstcasting.com.