Iyo yechando maitiro uye yakakwirira-tembiricha maitiro anoshandiswa muminda yakawanda.Semuenzaniso, kupisa kupisa maitiro inzira inopisa simbi zvinhu kana zvigadzirwa zvadzo kune tembiricha inodiwa, inotonhodza nekumhanya kwakasarudzwa uye nzira, inoshandura chimiro chavo chemukati, uye inowana inodiwa kuita.Iri rudzi rwemaitiro rinoshandiswa munzvimbo dzakawanda dzekugadzira zvigadzirwa zvemaindasitiri, asi piston tsvimbo inorapwa sei kupisa?Ndedzipi nzira dzayo dzekurapa kupisa?Yantai Shunfa Component Pneumatic Co., Ltd. inopindura sezvizvi.
Chinangwa chekudzima uye kudziya kurapwa ndechekuona kuti piston tsvimbo ine yakazara mechanical zvimiro zvinoenderana nesimba, kuoma, plastiki, uye kuoma.Iyo yemukati chimiro ndeye yunifomu uye yakanaka tempered sorbite, iyo inogadzirirwa kunotevera kudzima kwepamusoro.Iyo refu silinda piston tsvimbo ine hurefu hwe3800-4200 uye dhayamita ye Φ 90- Φ 110mm, saka midziyo yayo yekudziisa inotora 150KW yemhando yemhando yekupikisa muchoto kana 600KW yakamiswa inoramba ichipikisa kupisa muchoto, ine tembiricha inodzorwa munzvimbo mbiri: kumusoro. uye pasi.Heat treatment process parameters: Machubhu mana akaturikwa muchoto chimwe muchoto chemhando yetsime, ine tembiricha yekudzima ye830 ± 10 ℃.Mushure mekubata kwemaminitsi 160, machubhu anodzimwa kaviri, nemachubhu maviri anodzimwa nguva imwe neimwe.Inotenderera inotonhorera mvura inoshandiswa kutonhodza machubhu, ayo anotenderera achikwira nekudzika panguva yekudzima kuti ave nechokwadi chekutonhodza yunifomu kusvika pamwero mukuru.Kana yatonhodzwa kusvika pa100 ℃ (tsvimbo dzinoburitsa chiutsi asi dzisingapuhwi), mvura inoyerera ichipinda mugomba rechoto chekupisa.
Ipapo machubhu mana anodziirwa pa550 ± 10 ℃ panguva, anobatwa kwemaminetsi zana nemakumi mapfumbamwe, uye anodzikiswa mvura isati yatonhodza.Mushure mekuita kwepamusoro kudzima uye kudziya kurapwa, kuita hakuna kugadzikana, uye kuoma kunochinja pakati pe210-255HBS.Kune zvakare mutsauko wakakosha mukuoma pakati pekumusoro, yepakati, uye yakaderera zvikamu zveiyo imwechete piston tsvimbo.Uye dzimwe nguva kune munhu anopisa nekuoma kusingakodzeri kana kusimba kwakaderera kunoda kurapwa kwekugadzirisa.Kudzima deformation yakakura, ichiwedzera kuoma kwekutevera kutwasanuka uye mechanical processing.Nekuda kwehurombo hurema hwesimbi ye45, chimiro chemukati chakacherechedzwa nemetallography haisi imwe chete uye yunifomu yakatsamwa sorbite, asi pane yakakura yakawanda yemahara sorbite iripo pakati payo, uye zvimwe zvikamu zvakare zvine network ye sorbite uye Widmann chimiro.
Kuti tigadzirise matambudziko ari pamusoro apa, tinoshandisa yakaturikwa inoramba ichipisa kurapwa kudzima uye kupisa kwevira yekudzima nekudziya, ine 2 machubhu akaiswa pachubhu.Mushure mekudziya nekudzivirira, choto chinodzima choga, uye chubhu imwe inogadzirwa pabhiti kuti ive nechokwadi chekudziya kwakafanana.Tichifunga kuti tembiricha yeAc3 ye45 simbi ndeye 770-780 ℃, kuitira kunatsa zviyo uye kuderedza deformation nepose patinogona napo, tinotora 790 ± 10 ℃ intercritical quenching process yekunatsa austenite zviyo, uye kuwana yakanaka uye yakafanana Flat noodles. martensite mushure mekudzima, kuitira kuti uvandudze simba uye kuoma kwepiston tsvimbo.Kuti tiwedzere kudzikisira deformation uye kuvandudza kutonhora kufanana kwemhinduro yekudzima, isu takawedzera 5% -10% quenching additives kune pombi mvura.Panguva yekudzima, takashandisawo pombi yemvura inotenderera kumanikidza mushonga wekutonhodza kuti utenderere kuti utonhodze.Kupisa kuchiri kupisa pa550 ± 10 ℃, iine mutinhimira wakafanana wekudzima sepakutanga.Mushure mekupisa, inotonhodzwa nemvura kudzivirira kuitika kwechipiri rudzi rwekupisa brittleness.Mushure mekuvandudzwa kwemaitiro epamusoro, chimiro chemukati chakafanana uye chakanaka chinopisa sorbite, nekubviswa kwehombe kana reticular ferrite uye Widmann chimiro, zvichiita kuti yunifomu uye yakagadzikana kuoma uye simba.
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Nguva yekutumira: Sep-05-2023
