Kana iwe uchitsvaga zvidiki, zvakaomarara zvesimbi zvikamu, ungangove wakasangana nemazita maviri ekuita: simbi jekiseni molding (MIM) uye investigating casting. Ose ari maviri anovimbisa padhuze-mambure maumbirwo, ese anobata akaomarara geometries, uye ese ari maviri anowanzo kutorwa sedzimwe nzira dzechikamu chimwe chete. Asi hazvichinjike. Sarudzo iri pakati pavo inokanganisa maturusi ekudyara, kushivirira kunogoneka, huwandu hweodha, uye pakupedzisira mutengo weyuniti pahuwandu hwekugadzira kwako.
Gwaro iri rinopaza izvo zvinounzwa neMIM, painosiyana kubva pakukandira kwekudyara, uye kuti ungasarudza sei maitiro anokodzera chikamu chako-pane kumanikidza chikamu chako kuita zvisiri izvo.
MIM Pakungotarisa: Izvo Iyo Iyo Maitiro Inoburitsa
Metal jekiseni molding ndeyemhuri yehupfu metallurgy. Fine metal poda inosanganiswa nepolymer binder kugadzira feedstock, iyo inozoiswa jekiseni mugomba reforoma-senge kuumbwa kwejekiseni repurasitiki. Iyo inoguma "yegirini" chikamu chinopinda mudebinding kuti ibvise binder, ichiteverwa nekunyura pakupisa kwakanyanya. Panguva yekunyungudika, chikamu chinodzikira uye chinodzikira, chinowanzosvika pamusoro pe95% theoretical density.
Izvo zvinoshanda zvemaitiro aya zvinotsanangura kugona kweMIM envelopu:
Saizi yechikamu chakajairika. Zvikamu zvizhinji zveMIM zvinorema pakati pe0.1 g ne50 g. Zvikamu zvinosvika 200-240 g zvinogoneka mukuita, kunyangwe iyo optimum yehupfumi iri pasi pe50 g.
Kushivirira. As-sintered tolerances kazhinji inowira mukati me ± 0.5% yezita rezita, kunyangwe zvidiki zvidiki zvinogona kuwana kushivirira kwakasimba. Nhungamiro yekushivirira inomiririra inoratidza ± 0.03 mm yezviyero pasi pe3 mm, kukwira ku ± 0.5% yezviyero pamusoro pe60 mm. Aya ndiwo maitiro akajairika; Kugona chaiko kunoenderana nezvinhu, geometry, uye tooling.
Minimum madziro ukobvu. MIM inogona kuumba madziro pasi kusvika panosvika 0.3 mm seyakajairwa dhizaini dhizaini. Madziro akatetepa anogona kugoneka pasi pemamiriro akasarudzika uye akanaka geometries, asi 0.3 mm ndiyo yekutanga inoshanda yekuenderana kwekugadzira.
Surface finish. Sintered MIM zvikamu zvinowanzoita kushata kwepamusoro muhuwandu hweRa 0.8-1.6 μm yezvikamu zvekugadzira, zvine kupera kwakanaka kunogoneka pasi pehupfu hwakagadziridzwa uye mamiriro ekushandisa.
Zvishandiso. MIM inoshanda zvakanaka nesimbi dzisina tsvina, simbi dzepasi-alloy, titanium alloys, copper alloys, uye. cobalt-chromium. Iyo haina kunyatso kuenderana nealuminium uye zinc nekuda kweiyo oxidation nyaya panguva yekubvisa uye sintering.
Sei MIM Inofananidzwa neKukandira Kwekudyara: Dimension-ne-Dimension Kuputsika
Investment casting-inonziwo yakarasika wax casting-inoshandisa wakisi yakagadzirwa nekeramic kugadzira mold, iyo inobva yazadzwa nesimbi yakanyungudutswa. Matanho maviri aya anopindirana mukukwanisa kwavo kugadzira simbi dzakaoma, diki-kusvika-pakati, asi dzinosiyana pane akati wandei akakosha paramita.
Kushivirira uye Dimensional Consistency
MIM's as-sintered kushivirira kweinenge ± 0.5% ndiyo imwe yeayo akasimba ekutengesa mapoinzi ezvikamu zvidiki. Nekuti chikamu chacho chakaumbwa mugomba resimbi uye chakanyungudutswa pasi pemamiriro ekudzora, dimensional kuenderana padanho rekugadzira rinowanzo kwira.
Kushivirira mamakisi ekudyara kwekudyara anowanzo kutsanangurwa uchishandisa ISO 8062-3 DCTG mamakisi; mamakisi anogoneka anoenderana nealloy, shell system, uye foundry kugona. Sechiratidzo chakajairwa, kushivirira kwekudyara kwekudyara kwakasununguka pane kweMIM's ± 0.5% pazvidiki zvidiki, kunyangwe zvichigona kukwana zvimiro zvakakura uko mipimo yehukuru yeMIM inoita kuti isashande. Kune zvikamu zvine madiki madiki maficha, MIM kazhinji ine mupendero; kune zvikamu zvakakura zvine mwero kushivirira zvinodiwa, Investment casting kazhinji zvakakwana.
Minimum Feature Size uye Rusvingo Kukora
Apa ndipo apo maitiro maviri aya anosiyana zvakanyanya zvinooneka. MIM's poda-binder feedstock inoyerera ichipinda muhunyoro hwakatsetseka, ichigonesa madziro kudzika kusvika anosvika 0.3 mm uye madiki-maburi-maburi, anotsvedza, uye maumbirwo epamusoro angave akaoma kana kusakwanisa kukanda. Kukandira kwekudyara kunogona kuburitsa madziro akatetepa-kazhinji muchikamu che1.0-1.5 mm zvichienderana nealloy uye geometry-asi inonetsekana neiyo sub-millimeter maficha ayo MIM inobata nguva dzose. Kana dhizaini yako ichisanganisira mbabvu dzakatetepa, kukwanika kwakanaka, kana maburi madiki mapofu, MIM ndiyo yakanyanya kukwana.
Chikamu Saizi uye Huremu
Nzvimbo yehupfumi yeMIM inotapira zvikamu zvidiki: pasi pe50 g, uye kashoma kupfuura 200 g. Kukandira kwekudyara kunovhara yakakura saizi renji, kubva pamagiramu mashoma kusvika pamusoro pe100 kg, kunyangwe ichinyanya kukwikwidza kune zvikamu zviri pamusoro pesaizi uko MIM's tooling amortization inorambidzwa. Kune 5 g bracket, ese ari maviri maitiro anogona kutora; kune 500 g yeimba, kuisa mari yekudyara ndiyo sarudzo inoshanda.
Surface Finish
Sintered MIM nzvimbo dzinowanzo kutsvedzerera pane se-yakakanda mari yekukanda nzvimbo. MIM inowana Ra 0.8–1.6 μm pazvikamu zvekugadzira pasina chechipiri mashandiro. Investment casting surface kupedzisa kunoenderana neshell system; akajairwa se-akakandirwa nzvimbo ari muRa 6.3-12.5 μm renji, ine yakapfava inopera inogoneka kuburikidza nekugadzirisa maitiro. Maitiro ese ari maviri anogona kukwenenzverwa kana kugadzirwa kuti apedzisire zvakanaka, asi MIM inowanzoda kushomeka kwemashure-kugadziriswa kwenzvimbo dzinoshanda.
Material Flexibility
Kukandira kwekudyara kunogamuchira huwandu hwakakura hwema alloys nekuti mold yeceramic inomira tembiricha yakakwira uye haiite nekunyunguduka nenzira imwechete seMIM's binder system. Nickel superalloys, cobalt alloys, uye aruminiyamu zvinogara zvichiiswa mari. MIM inongogumira kune alloys anogona kuve atomize kuita hupfu hwakatsetseka uye kugadziriswa kuburikidza nekuvhara uye kunyura pasina yakawandisa oxidation kana kusvibiswa kwasara. Stainless simbi uye yakaderera-alloy simbi inotonga MIM kugadzirwa; titanium inogoneka asi inoda zvakanyanya; aluminium kazhinji haina kukodzera.
Mechanical Properties uye Density
Sintered MIM zvikamu zvinosvika 95-99% theoretical density, ine michina zvivakwa zvinosvika zvakagadzirwa zvinhu zvealloys akawanda. Kukandwa kwekudyara kwakazara muchimiro che-as-cast asi inogona kunge iine shrinkage porosity zvichienderana negeti uye kusimba. Kuenzanisa hakusi nyore chiyero: kune yakapihwa alloy, MIM inogona kupa zvirinani kuneta kuramba nekuda kweiyo yakanaka microstructure, nepo kuisa mari kukanda kunogona kupa zvirinani ductility muzvikamu zvakakora. Kuenzanisa kwakakodzera kunoenderana neiyo chaiyo alloy uye mutoro kesi.
Iyo Economics: Kana MIM Ichiita Zvemari Sense (uye Kana Isingaiti)
Kushandisa MIM kunodhura. Iyo yakajairwa imwechete-cavity kana yakaderera-cavity mold inoita madhora zviuru zvisere kusvika kumadhora makumi matatu, ichikwira kune yakaoma multi-cavity tooling. Iko mari inofanirwa kuderedzwa pahuwandu hwekugadzira. Maitiro acho anowanzo kuve anoshanda mune zvehupfumi pazvinosvika zviuru zvishanu kusvika gumi,000 zvikamu pagore, paine chikumbaridzo chaicho zvichienderana nekuoma kwechikamu, mutengo wezvinhu, uye huwandu hwemhango.
Investment casting tooling-jekiseni rewakisi rinofa-kazhinji rinodhura kudarika MIM tooling. Izvi zvinoita kuti kukanda kwekudyara kuve nyore kuwanda kwemavhoriyamu akaderera, prototyping, uye magadzirirwo anogona kunge achiri kubuda. Chiitiko cheindasitiri chinoisa iyo inoshanda crossover muzviuru zvakaderera kusvika 10,000-15,000 zvikamu pagore, pazasi iyo yekuisa mari kunowanzo kudhura-inoshanda kune zvikamu zvakafanana.
Mhedzisiro inoshanda yekutsvagisa yakatwasuka: kana zvaunoda zvepagore zviri pazasi pezviuru zvishoma zvimedu, kuisa mari pakudyara kungangove sarudzo yakaderera-yenjodzi yemari. Kana iwe uchitarisira vhoriyamu yakatsiga pamusoro pezvishanu, 000-10,000 mayunitsi uye chikamu chako chinoenderana nehukuru hweMIM uye chimiro hamvuropu, iyo yepamusoro yekushandisa mari inogona kudzosera kuburikidza nemutengo wakaderera weyuniti uye kuderedzwa kwechipiri machining.
Mamiriro Akakodzera uye Asina Kukodzera: A Inoshanda Sarudzo Yekutungamira
Panzvimbo pekuzivisa imwe nzira yepamusoro, mubvunzo unobatsira ndewokuti: ndeipi maitiro anofanana nechikamu ichi, pabhuku rino, nezvinodiwa izvi?
Sendamira kuMIM apo:
- Chikamu chinorema pasi pe ~ 50 g uye chinokwana muchanza cheruoko rwako.
- Iyo geometry inosanganisira madziro akatetepa (anosvika 0.3 mm), akatsetseka pamusoro pemamiriro ezvinhu, kana madiki emuchinjiko-maficha.
- Vhoriyamu yegore iri pa kana pamusoro pezvimedu zvishanu,000–10,000.
- The alloy is a simbi isina tsvina, simbi yakaderera-alloy, kana titanium yakanyatsogadziriswa muMIM feedstock supply.
- Zvinodiwa zvekushivirira zvakasimba zvekuti kukanda kwekudyara kunoda yakakosha sekondari machining.
Sendamira kune Investment casting apo:
- Chikamu chakakura kana chinorema kupfuura huwandu hwehupfumi hweMIM.
- Vhoriyamu yegore yakaderera (prototype kuburikidza nepasi-zviuru).
- Iyo alloy is nickel superalloy, aluminium, kana chimwe chinhu chisina kunyatsokodzera kuMIM feedstock.
- Iyo dhizaini ichiri kubuda uye iwe unoda kudzivirira kuzvipira kune inodhura MIM yekushandisa.
- Zvinodiwa zvekushivirira zvine mwero uye zvinogoneka ne-as-cast dimensions pamwe nekusarudza machining.
Ose ari maviri anogona kushanda kana:
- Chikamu chidiki asi chisina kunyanya kuomarara, uye vhoriyamu inogara mu5,000-15,000 renji.
- Iyo alloy yakajairika kune ese maviri maitiro (semuenzaniso, 17-4PH simbi isina tsvina).
- Muzviitiko izvi, kukumbira makotesheni kubva kune vatengesi vanopa ese ari maviri maitiro ndiyo yakavimbika nzira yekufananidza mutengo chaiwo, pane kuvimba nemirairo yezvigunwe.
Mibvunzo Inowanzo bvunzwa
Ko MIM inogona kutsiva mari yekukandira chikamu changu?
Zvinoenderana nehukuru, vhoriyamu, uye chimiro. MIM inokunda pazvikamu zviduku, zvakaoma mumavhoriyamu akakwirira. Kana chikamu chako chiri pasi pe ~ 50 g, chinoda maitiro akanaka, uye iwe unoda zviuru zvemayuniti pagore, MIM mumiriri akasimba. Kana chikamu chacho chiri chikuru kana kuti vhoriyamu yako yakaderera, kuisa mari kunogona kuramba kuchishanda.
Ndeupi hudiki hweodha huwandu hweMIM uchienzaniswa nekudyara kwekudyara?
MIM haiwanzo kutaurwa pazasi zviuru zvishoma zvimedu nekuti mutengo wekushandisa unotonga; pazasi pechikumbaridzo icho, kushandisa amortization kunoita kuti chikamu-chete mutengo usakwikwidze pakukanda kana kugadzira. Kukandira kwekudyara kunogona kuve kwehupfumi pamavhoriyamu akaderera, kusanganisira prototypes uye madiki ekugadzira anomhanya.
Ndeipi nzira inowana kushivirira kwakasimba?
Kune zvidiki zvidiki, MIM inowanzobata yakasimba se-sintered kushivirira (± 0.5% yakajairwa, ine dzakasimba dzakasimba hunhu pazvinhu zvidiki). Investment casting tolerances yakasununguka pane zvidiki maficha asi inogona kukwana kune akakura zviyero uko MIM isina saizi-yakakodzera.
Zvikamu zveMIM zvinogona kurapwa kupisa kana kugadzirwa mushure mekupisa?
Hongu. Sintered MIM zvikamu zvinogona kupisa kupisa, kugadzirwa, kukwenenzverwa, uye kuputirwa uchishandisa yakajairwa maitiro. Muzviitiko zvakawanda, MIM inoderedza kuwanda kwe kugadzira kunodiwa zvichienzaniswa nekukandira, asi zvechipiri mashandiro anoramba achigoneka pazvinodiwa.
Ndezvipi zvinhu zvakaoma kana zvisingabviri kuMIM?
Aluminium uye zinc kazhinji hazvina kukodzera nekuda kweoxidation uye binder kudyidzana nyaya. High-melting-point superalloys inogona kuve nehunyanzvi inogoneka asi haina kuwanda. Investment casting inovhara yakakura alloy renji yakazara.
Mhedziso: Kufananidza Maitiro kune Chikamu
MIM uye kukanda kwekudyara havasi vakwikwidzi mune anokunda-kutora-zvese pfungwa. Ivo vanogara munzvimbo dzakasiyana dzesaizi-vhoriyamu-yakaoma nzvimbo. MIM inopa yakasarudzika uye inoratidzira ruzivo rwezvikamu zvidiki pamavhoriyamu akakwira, asi inoda mari yekushandisa iyo inongonzwisisika kana huwandu hwekugadzira huchiruramisa. Kukandira kwekudyara kunopa kuchinjika kwezvinhu uye kudzika zvipingamupinyi zvekushandisa, pamutengo wekushivirira kwakasununguka uye kugona kushoma kwezvimiro zvepasi-millimeter.
Nzira yakavimbika yekumberi ndeyekuongorora chikamu chako chaicho uchipesana nehukuru uhu, saizi, chimiro, alloy, kushivirira, uye vhoriyamu yegore - wobva wakumbira maitiro-chaiwo makotesheni kubva kune vatengesi vanogona kuratidza ruzivo nezvese. Ipa iyo yakafanana kudhirowa uye vhoriyamu kufanotaura kune yega yega quote, uye kumbira mutengesi kuti atarise chero madhizaini madhizaini anowira kunze kwekugona kwavo. Chikamu chinotaridzika semumiriri akakwana weMIM pabepa chinogona kuratidza zvekushandisa kana zvipingaidzo zvezvinhu mukuita; saizvozvowo, mari yekukanda quote inogona kukushamisa iwe pakukwanisa kushivirira. Rega chikamu uye chokwadi chekugadzira chisarudze.
