Common kuremara uye sei kudzivirira?
Kukanganisa kwakajairika mukugadzirwa kwebrake disc: gomba remhepo, shrinkage porosity, gomba rejecha, nezvimwe;Iyo yepakati uye yemhando graphite mumetallographic chimiro inodarika mwero, kana iyo carbide uwandu mwero;Kunyanya kuoma kweBrinell kunotungamirira kukugadzirisa kwakaoma kana kuoma kusina kuenzana;Chimiro chegraphite chakakasharara, michina yemagetsi haina kusvika pachiyero, kushata kwakashata mushure mekugadzirwa, uye porosity iri pachena pane yekukanda inoitikawo nguva nenguva.
1. Kugadzira uye kudzivirira maburi emhepo: maburi emhepo ndeimwe yezvinokanganisa zvakanyanya zvebrake disc castings.Mabhureki disc madiki madiki uye akatetepa, kutonhora uye kugadzika kumhanya kunokurumidza, uye hapana mukana wekunaya kwemhepo makomba uye maburi emhepo anoshanda.Mafuta emafuta binder jecha core ane gasi guru chizvarwa.Kana hunyoro hwehutu hwakakwira, izvi zviviri zvinhu zvinowanzo tungamira kune invasive pores mukukanda.Inowanikwa kuti kana hunyoro hwejecha rekuumba hunopfuura, porosity scrap rate inowedzera zvakanyanya;Mune mamwe majecha matete core castings, kukachidzwa (kuchipa pores) uye pamusoro pores (shelling) zvinowanzoonekwa.Kana iyo resin yakavharwa jecha inopisa core box nzira inoshandiswa, ma pores anonyanya kukomba nekuda kwechizvarwa chikuru chegesi;Kazhinji, dhisiki rebhureki rine jecha gobvu core hariwanzove nemhepo buri rinokanganisa;
2. Kuumbwa kwegomba remhepo: iyo gasi inogadzirwa ne disc sand core ye brake disc casting pakupisa kwepamusoro ichayerera ichienda kunze kana mukati yakatwasuka kuburikidza nepakati jecha gap pasi pemamiriro ezvinhu akajairika.Iyo disc jecha musimboti inova mutete, iyo gasi nzira inova yakamanikana uye kuyerera kwekudzivirira kunowedzera.Mune imwe nguva, apo simbi yakanyungudutswa inokurumidza kunyudza iyo disc jecha core, yakawanda gasi ichaputika;Kana kuti yakakwirira-tembiricha yakanyungudutswa yesimbi yakanyungudutswa ine yakakwira mvura yejecha huremu (kusaenzana kusanganiswa kwejecha) pane imwe nzvimbo, zvichikonzera kuputika kwegasi, kukachidza moto uye kugadzira pores anodzipwa;Mune imwewo nyaya, gasi rakagadzirwa nehigh-pressure rinopinda musimbi yakanyungudutswa royangarara mudenga ropukunyuka.Kana iyo mold isingakwanisi kuibvisa munguva, gasi richapararira mugasi regasi pakati pesimbi yakanyungudutswa uye nechepasi pepamusoro pepamusoro, inobata chikamu chepamusoro chepamusoro pe disc.Kana iyo simbi yakanyungudutswa ichiomesa, kana viscosity yakakura uye ichirasikirwa nekuyerera, nzvimbo inogarwa negasi haigone kuzadzikiswa, Inosiya pevhu pores.Kazhinji, kana gasi rinogadzirwa nechepakati risingagoni kuyangarara kumusoro uye kupukunyuka kuburikidza nesimbi yakanyungudutswa munguva, icharamba iri pamusoro pedhisiki, dzimwe nguva ichiburitswa senge pore imwe chete, dzimwe nguva inoburitswa mushure mekupfurwa kuputika kubvisa iyo oxide scale, uye dzimwe nguva inowanikwa mushure mekugadzira, izvo zvinokonzeresa kutambisa kwemaawa ekugadzirisa.Kana iyo brake disc core yakakora, zvinotora nguva yakareba kuti iron yakanyunguduka ikwire nepakati pe disc core uye inonyudza iyo disc core.Isati yanyura, gasi rinogadzirwa nechepakati rine nguva yakawanda yekuyerera zvakasununguka kusvika kumusoro kwepakati kuburikidza nejecha gap, uye kuramba kuyerera kunze kana mukati mukati mehorizontal direction iduku zvakare.Naizvozvo, kuremara kwepamusoro pore hakuwanzo kuumbwa, asi munhu ari ega pores anogonawo kuitika.Kureva kuti, pane saizi yakakomba yekugadzira mapores anodzipwa kana maburi epamusoro pakati pekukora nekukora kwepakati pejecha.Kamwe ukobvu hwejecha musimboti hwakaderera pane uku kwakakomba ukuru, pachava nemaitiro akakomba emapores.Iyi chiyero chakakosha inowedzera nekuwedzera kweiyo radial dimension yebrake disc uye nekutetepa kweiyo disc core.Tembiricha chinhu chakakosha chinokanganisa porosity.Simbi yakanyungudutswa inopinda mugomba remuvhu kubva mukati mesprue, inonzvenga nhete yepakati kana ichizadza dhisiki, uye inosangana yakatarisana nesprue yemukati.Nekuda kwemaitiro akareba, tembiricha inodzikira zvakanyanya, uye viscosity inowedzera zvinoenderana, nguva inoshanda yekuti mabhubhu ayangamire kumusoro uye kubuda ipfupi, uye simbi yakanyungudutswa inosimba gasi risati rabuda zvachose, saka pores ari nyore kuita. kuitika.Naizvozvo, iyo inobudirira nguva yekuyerera kwebubble uye kuburitsa inogona kurebeswa nekuwedzera tembiricha yesimbi yakanyungudutswa pane disc yakatarisana nemukati mesprue.
