Nzira dzinoverengeka dzinozivikanwa dzerabha

1. Kuramba kune yepakati uremu bvunzo

Chigadzirwa chakapedzwa chinogona kuenzanisirwa, chakanyikwa mune imwe kana akati wandei yakasarudzwa midhiya, kuyerwa mushure meimwe tembiricha uye nguva, uye rudzi rwezvinhu zvinogona kuverengerwa zvinoenderana nehuremu shanduko yehuremu uye kuoma shanduko chiyero.

Semuenzaniso, yakanyudzwa mu100 degree mafuta kwemaawa makumi maviri nemana, NBR, fluorine rabha, ECO, CR ine shanduko diki mumhando uye kuoma, nepo NR, EPDM, SBR inodarika kaviri muhuremu uye shanduko mukuoma zvakanyanya, uye kuwedzera kwevhoriyamu. zviri pachena.

2. Mhepo inopisa yekuchembera bvunzo

Tora sampuli kubva kune zvakapedzwa zvigadzirwa, uzviise mubhokisi rekukwegura kwezuva rimwe, uye cherechedza chiitiko mushure mekukwegura. Kuchembera zvishoma nezvishoma kunogona kuwedzerwa zvishoma nezvishoma. Semuenzaniso, CR, NR, uye SBR ichave brittle pa 150 degrees, nepo NBR EPDM ichiri elastic. Kana tembiricha yakwira kusvika 180 madhigirii, iyo yakajairwa NBR ichave brittle; uye HNBR ichaitawo brittle pa 230 madhigirii, uye fluorine rabha uye silicone zvichine elasticity yakanaka.

3. Nzira yekupisa

Tora sampuli duku uye upise mumhepo. cherechedza chiitiko chacho.

Kazhinji kutaura, fluorine rubber, CR, CSM haina moto, uye kunyange kana murazvo uchipfuta, iduku zvikuru kudarika NR neEPDM. Zvechokwadi, kana tikanyatsotarisa, mamiriro ekupisa, ruvara, uye kunhuwa kunotipawo ruzivo rwakawanda. Semuenzaniso, kana NBR/PVC yasanganiswa neglue, kana paine chitubu chemoto, moto unoputika uye uchiita semvura. Izvo zvinofanirwa kucherechedzwa kuti dzimwe nguva murazvo unodzoreredza asi halogen-isina glue ichadzimawo pachayo kubva mumoto, iyo inofanirwa kuwedzeredzwa neimwe nzira.

4. Kuyera giravhiti chaiyo

Shandisa chiyero chemagetsi kana analytical balance, yakarurama kusvika 0.01 gram, pamwe negirazi remvura uye bvudzi.

Kazhinji kutaura, fluorine rabha ine yakakura chaizvo giravhiti, pamusoro pe1.8, uye mazhinji ezvigadzirwa zveCR ECO ane chikamu chikuru pamusoro pe1.3. Aya glue anogona kutariswa.

5. Low tembiricha nzira

Tora sampuli kubva pachigadzirwa chakapedzwa uye shandisa chando chakaoma uye doro kugadzira nzvimbo yakakodzera ye cryogenic. Soak sampuli munzvimbo yakadzika yekushisa kwema 2-5 maminetsi, inzwa kupfava uye kuoma pane yakasarudzwa tembiricha. Semuenzaniso, pa -40 madhigirii, iyo yakafanana yakakwirira tembiricha uye mafuta kuramba silica gel uye fluorine rubber inofananidzwa, uye silica gel yakapfava.