Fekitari yakananga kutengesa SAIC MAXUS V80 C00014713 Piston Ring-92MM

Zvigadzirwa ruzivo

Piston Ring irin'i yesimbi inoshandiswa kuisa mugoronga repiston. Kune mhando mbiri dzepiston mhete: compression mhete uye mafuta mhete. Mhete yekumanikidza inoshandiswa kuvhara musanganiswa unopisa mukamuri yekupisa; mhete yemafuta inoshandiswa kukwenya mafuta akawandisa kubva muhumburumbira.

Iyo piston mhete isimbi elastic mhete ine yakakura yekuwedzera deformation, iyo inounganidzwa mu annular groove inoenderana nechikamu chemuchinjikwa. Mhete dzepiston dzinodzorera uye dzinotenderera dzinotsamira pamusiyano wekumanikidzwa kwegasi kana mvura kuti igadzire chisimbiso pakati pekunze kwedenderedzwa pamusoro pemhete necylinder uye rumwe rutivi rwemhete nemhete groove.

Mhete dzepiston dzinoshandiswa zvakanyanya mumagetsi akasiyana siyana, senge injini dzemagetsi, injini dzedhiziri, injini dzepeturu, compressors, hydraulic machines, nezvimwewo, uye dzinoshandiswa zvakanyanya mumotokari, zvitima, ngarava, yachts, nezvimwe. Kazhinji, piston mhete ndeye. yakaiswa mumhete yepiston, uye inoumba kamuri ine piston, silinda liner, silinda musoro uye zvimwe zvinoumba kuita basa.

kukosha

Mhete yepiston ndiyo chikamu chepakati mukati mejini yemafuta, iyo inopedzisa kuiswa chisimbiso chegesi yemafuta pamwe chete necylinder, piston, cylinder wall, etc. Inowanzo shandiswa injini dzemotokari idizeli uye peturu injini. Nekuda kwekuita kwavo kwakasiyana kwemafuta, zvindori zvepiston zvinoshandiswa zvakasiyanawo. Mhete dzekutanga dzepiston dzakagadzirwa nekukandira, asi nekufambira mberi kwehunyanzvi, mhete dzepiston dzesimbi dzakazvarwa. , uye nekuenderera mberi nekuvandudzwa kweinjini basa uye zvinodiwa kwezvakatipoteredza, akasiyana epamberi ekurapa ekurapa mashandisirwo, senge thermal spraying, electroplating, chrome plating, gasi nitriding, kuisa muviri, kupeta kwepamusoro, zinc-manganese phosphating, nezvimwewo, Basa reiyo piston mhete inovandudzwa zvakanyanya.

Function

Mabasa echindori chepiston anosanganisira mabasa mana: kuisa chisimbiso, kudzora mafuta (oiri kutonga), kupisa conduction (kupisa kupisa), uye kutungamira (tsigiro). Kuisa chisimbiso: kunoreva kuisa chisimbiso gasi, kudzivirira gasi mukamuri rinopisa kuti rirege kupinda mukati me crankcase, kudzora kubuda kwegasi kusvika kushoma, uye kuvandudza kushanda kwemafuta. Kubuda kwemhepo hakuzongodzikisi simba rejini, asiwo kushatisa mafuta, iro ndiro basa guru remhete yemhepo; Gadzirisa mafuta (kutonga kwemafuta): bvisa mafuta ekuzora akawandisa pamadziro ecylinder, uye panguva imwechete ita kuti cylinder madziro iite mutete Iyo firimu yemafuta yakaonda inova nechokwadi chekuzora kwakajairika kwecylinder, piston uye mhete, rinova iro basa guru. yemhete yemafuta. Mune injini dzemazuva ano dzepamusoro-soro, kunyanya kukoshesa kunobhadharwa kune basa remhete yepiston kudzora firimu yemafuta; heat conduction: kupisa kwepiston kunoitwa kune cylinder liner kuburikidza nemhete yepiston, kureva, kutonhora. Zvinoenderana nedata rakavimbika, 70-80% yekupisa yakagamuchirwa nepamusoro pepiston mupiston isina kutonhorera inodzingwa kuburikidza nemhete yepiston kumadziro ecylinder, uye 30-40% yepiston yakatonhodzwa inotumirwa kune silinda kuburikidza ne Piston mhete Rutsigiro: Iyo piston mhete inochengeta piston mucylinder, inodzivirira piston kubva pakubata zvakananga kumadziro silinda, inovimbisa kufamba kwakatsetseka kwepiston, kunoderedza kupokana, uye kudzivirira piston kubva pakugogodza silinda. Kazhinji, piston yeinjini yepeturu inoshandisa mhete dzemhepo mbiri uye mhete imwe yemafuta, nepo injini yedhiziri inowanzoshandisa mhete dzemafuta mbiri uye mhete imwe yemhepo. [2]

hunhu

simba

Masimba anobata pachindori chepiston anosanganisira kumanikidzwa kwegasi, simba rinoputika remhete pachayo, simba risina simba rekudzoka kwemhete yemhete, kupesana pakati pemhete necylinder uye groove yemhete, nezvimwewo. mauto, mhete inoburitsa mafambiro ekutanga senge axial movement, radial movement, uye kutenderera kwekufamba. Pamusoro pezvo, nekuda kwehunhu hwayo hwekufamba, pamwe nekufamba kusingaite, mhete yepiston inoratidzika kunge yakamiswa uye axial vibration, radial irregular motion uye vibration, kumonyorora kufamba, nezvimwewo zvinokonzerwa neaxial irregular motion. Aya mafambiro asina kujairika anowanzo kudzivirira mhete dzepiston kushanda. Paunenge uchigadzira rin'i yepiston, zvinodikanwa kuti upe kutamba kwakazara kune yakanakira mafambiro uye kudzora iyo isina kunaka divi.

thermal conductivity

Kupisa kwakanyanya kunokonzerwa nekupisa kunoendeswa kumadziro ecylinder kuburikidza nemhete yepiston, saka inogona kutonhodza piston. Kupisa kwakanyura kumadziro ecylinder kuburikidza nepiston mhete kunogona kazhinji kusvika 30 kusvika 40 % yekupisa kunotorwa nepamusoro pepiston.

mhepo yakasimba

Basa rekutanga remhete yepiston kuchengetedza chisimbiso pakati pepiston uye cylinder madziro uye kudzora kubuda kwemhepo kusvika kushoma. Iri basa rinonyanya kuitwa nemhete yegesi, ndiko kuti, pasi pemhando ipi neipi yekushanda kweinjini, kubuda kwemhepo yakamanikidzwa uye gasi kunofanirwa kudzorwa kusvika padiki kuti ivandudze kushanda kwemafuta; kudzivirira kubuda pakati pecylinder nepiston kana pakati pecylinder nering. Seize; kudzivirira kutadza kunokonzerwa nekuderera kwemafuta ekuzora, nezvimwe.

Kudzora mafuta

Chechipiri basa remhete yepiston ndeyekukwenya zvakanaka mafuta ekuzora akasungirirwa pamadziro ecylinder uye kuchengetedza kushandiswa kwemafuta kwakajairwa. Kana mafuta ekuzora anopihwa akawandisa, anoyamwa mukamuri yekupisa, iyo inowedzera kushandiswa kwemafuta, uye ichava nepesvedzero yakaipa pakuita kweinjini nekuda kwekabhoni deposits inogadzirwa nekupisa.

Kutsigira

Nekuti piston idiki zvishoma pane dhayamita yemukati yecylinder, kana pasina piston mhete, piston haina kugadzikana mucylinder uye haigone kufamba zvakasununguka. Panguva imwecheteyo, mhete inodzivirirawo piston kubva pakubata zvakananga cylinder uye inoita basa rinotsigira. Naizvozvo, mhete yepiston inofamba ichikwira nekudzika muhumburumbira, uye nzvimbo yayo inotsvedza inotakurwa zvizere nemhete.

Classification

Nechimiro

A. Monolithic chimiro: kuburikidza nemaitiro ekukanda kana kuumbwa kwekubatanidza.

b. Yakasanganiswa mhete: Mhete yepiston inoumbwa nezvikamu zviviri kana kupfuura zvakaunganidzwa mugororo remhete.

c. Mhete yemafuta yakatsvetwa: mhete yemafuta ine mativi akaenzana, nyika mbiri dzekusangana uye maburi ekudzosera mafuta.

D. Slotted coil chitubu chemafuta mhete: wedzera mhete yemafuta echitubu chetsigiro chekoiri murin'i yemafuta. Chitubu chekutsigira chinogona kuwedzera radial chaiyo kudzvanywa, uye simba rayo riri mukati meiyo mhete yakaenzana. Kazhinji inowanikwa mune dizeli injini mhete.

E. Steel belt yakasanganiswa mhete yemafuta: rin'i yemafuta inoumbwa nerin'i yemucheka uye mhete mbiri dzekugera. Dhizaini yemhete yekutsigira inosiyana nemugadziri uye inowanzowanikwa mumarin'i enjini.

Chikamu chimiro

Bucket ring, cone ring, yemukati chamfer twist ring, wedge ring uye trapezoid ring, mhino mhete, yekunze pendekete yakamonyoroka, yemukati chamfer twist ring, simbi bhandi rekubatanidza mafuta mhete, chamfer mhete yemafuta akasiyana, zvakafanana To chamfer mafuta mhete, simbi coil. chitubu chemafuta mhete, simbi yemafuta mhete, nezvimwe.

Nezvinhu

Kandira simbi, simbi.

kurapwa kwepamusoro

Nitride mhete: Kuoma kweiyo nitride layer iri pamusoro pe950HV, iyo brittleness iri giredhi 1, uye ine yakanaka yekusapfeka uye kusagadzikana kwemarara. Chrome-plated mhete: Iyo chrome-plated layer yakanaka, compact uye yakatsetseka, nekuoma kweinopfuura 850HV, yakanaka kwazvo kupfeka kuramba, uye network yecriss-kuyambuka micro-cracks, iyo inobatsira kuchengetwa kwemafuta ekuzora. . Phosphating mhete: Kuburikidza nemakemikari kurapwa, chidimbu chephosphating firimu inoumbwa pamusoro pepiston mhete, iyo inoridza anti-rust mhedzisiro pachigadzirwa uye zvakare inovandudza yekutanga kumhanya-mukuita kwemhete. Oxidation mhete: Pasi pemamiriro ekupisa kwakanyanya uye yakasimba oxidant, firimu reoxyde rinoumbwa pamusoro pesimbi, iyo ine corrosion resistance, anti-friction lubrication uye chitarisiko chakanaka. Kune PVD uye zvichingodaro.

maererano nebasa

Kune marudzi maviri ezvindori zvepiston: mhete yegesi uye mhete yemafuta. Basa remhete yegesi ndere kuona chisimbiso pakati pepiston necylinder. Inodzivirira kudziya kwepamusoro-kupisa uye kudzvanya gasi mucylinder kuti isapinda mucrankcase yakawanda, uye panguva imwechete inoitisa kupisa kwakawanda kubva kumusoro kwepiston kuenda kumadziro ecylinder, inozotorwa mvura inotonhorera kana mweya.

Iyo mhete yemafuta inoshandiswa kukwenya mafuta akawandisa pamadziro ecylinder, uye kupfekedza firimu remafuta yunifomu pamadziro ecylinder, izvo zvisingakwanisi kudzivirira mafuta kuti asapinda mucylinder nekupisa, asi zvakare kuderedza kupera uye kubvaruka kwepiston. , mhete yepiston uye silinda. frictional resistance. [1]

kushandiswa

Kuzivikanwa kwakanaka kana kwakaipa

Iyo yekushanda yepiston mhete haizove nema nick, makwara uye mapeeling, iyo yekunze cylindrical pamusoro uye yepamusoro uye yakadzika magumo nzvimbo ichave nekumwe kutsetseka, iyo curvature kutsauka haingave yakakura kupfuura 0.02-0.04 mm, uye yakajairwa kunyura. chiyero chemhete mugorofu hachifaniri kudarika 0.15-0.25 mm, elasticity uye kubvumidzwa kwepiston mhete zvinosangana. mitemo. Pamusoro pezvo, dhigirii rekudonha kwechiedza chemhete yepiston inofanirawo kuongororwa, kureva kuti, mhete yepiston inofanira kuiswa yakafuratira mucylinder, kanoni kadiki kemwenje kanofanirwa kuiswa pasi pemhete yepiston, uye ndiro ine shading inofanira kuiswa pairi. iyo, uyezve gaka rekudonha kwechiedza pakati pemhete yepiston nemadziro ecylinder inofanira kucherechedzwa. Izvi zvinoratidza kana kubatana pakati pepiston mhete nemadziro ecylinder kwakanaka. Kazhinji, gaka rekudonha kwechiedza chemhete yepiston harifanire kudarika 0.03 mm kana kuyerwa negeji yekukora. Kureba kweiyo inoenderera mwenje inodonha slit haifanirwe kuve yakakura kupfuura 1/3 ye silinda dhayamita, kureba kweakati wandei kudonha kwechiedza hakufanirwe kunge kwakakura kupfuura 1/3 ye silinda dhayamita, uye hurefu hwakazara hwekubuda kwemwenje kwakati wandei hunofanira. kwete kudarika 1/2 ye cylinder dhayamita, kana zvisina kudaro, inofanira kutsiviwa.

mirau yekumaka

Piston mhete inomaka GB/T 1149.1-94 inotara kuti mhete dzese dzepiston dzinoda kuisirwa nzira dzinofanirwa kutara kudivi repamusoro, ndiko kuti, divi riri pedyo nekamuri rinopisa. Mhete dzakatarwa kudivi rekumusoro dzinosanganisira: mhete yeconical, chamfer yemukati, mhete yetafura yekunze yakachekwa, mhete yemhino, mhete yewedge nemhete yemafuta inoda kugadzwa kwekuisa, uye divi repamusoro remhete rakamaka.

Zvekungwaririra

Teerera paunenge uchiisa mhete dzepiston

1) Iyo piston mhete yakanyatsoiswa mucylinder liner, uye panofanira kunge paine imwe gap yekuvhura pane interface.

2) Iyo mhete yepiston inofanirwa kuiswa papiston, uye mumhete groove, panofanira kunge paine kumwe kubvumidzwa kwepadivi parutivi rwehurefu.

3) Iyo chrome-yakapfatwa mhete inofanira kuiswa mugero rekutanga, uye kuvhura hakufanirwe kutarisana negwara reeddy razvino gomba pamusoro pepiston.

4) Mazaru episton ring imwe neimwe anozununguka ne 120 ° C, uye haabvumirwi kutarisana nepiston pin gole.

5) Yezvindori zvepiston zvine chikamu chetapered, iyo tapered surface inofanirwa kunge iri kumusoro panguva yekuiswa.

6) Kazhinji, kana mhete ye torsion yakaiswa, chamfer kana groove inofanira kunge iri kumusoro; kana tapered anti-torsion ring yakaiswa, chengetedza koni yakatarisa kumusoro.

7) Paunenge uchiisa mhete yakasanganiswa, iyo axial lining ring inofanira kuiswa kutanga, uye ipapo mhete yeflat uye mhete yemafungu inofanira kuiswa. Mhete yakatsetseka inoiswa kumusoro uye pasi pechindori chekuzunguza, uye kuvhurwa kwemhete yega yega kunofanirwa kudzika kubva kune imwe neimwe.

Basa rezvinhu

1. Pfeka kuramba

2. Kuchengetera mafuta

3. Kuoma

4. Corrosion resistance

5. Simba

6. Kudzivisa kupisa

7. Kunaka

8. Kucheka kuita

Pakati pavo, kupfeka kupikisa uye elasticity ndiyo inonyanya kukosha. Yepamusoro-simba dizeli injini piston mhete zvinhu zvinonyanya zvinosanganisira grey cast iron, ductile iron, alloy cast iron, uye vermicular graphite cast iron.

Piston yekubatanidza tsvimbo musangano

Mapoinzi makuru ekusangana kwedhiziri jenareta piston yekubatanidza tsvimbo boka ndeaya anotevera:

1. Press-fit yekubatanidza tsvimbo sleeve yemhangura. Paunenge uchiisa sleeve yemhangura yetsvimbo yekubatanidza, zviri nani kushandisa kudhinda kana vheji, uye usarova nenyundo; gomba remafuta kana goro remafuta paruoko rwemhangura rinofanirwa kuwiriraniswa negomba remafuta padanda rekubatanidza kuti ive nechokwadi chekuzora kwayo.

2. Unganidza piston uye tsvimbo yekubatanidza. Paunenge uchiunganidza piston uye tsvimbo yekubatanidza, teerera kune imwe nzvimbo yavo uye maitiro.

Yetatu, piston yakaiswa zvine hungwaru. Piston yepiston uye buri repini zvinopindirana. Pakuisa, tanga waisa piston mumvura kana mafuta uye uchipisa zvakaenzana kusvika 90 ° C ~ 100 ° C. Mushure mekuiburitsa, isa tie tsvimbo panzvimbo yakakodzera pakati pemaburi ezvigaro zvepiston, wobva waisa piston yakavharwa nemafuta munzira yakafanotemerwa. mugomba repiston uye tsvimbo yendarira sleeve

Chechina, kuiswa kwepiston mhete. Paunenge uchiisa piston zvindori, teerera kune chinzvimbo uye kurongeka kwemhete yega yega.

Chechishanu, isa boka rekubatanidza tsvimbo.