Kusankha chochapira cha EPDM kuyenera kuyang'ana pazinthu zisanu izi

Washer ndi chinthu kapena chophatikizika cha zinthu zomangika pakati pa zolumikizira ziwiri zodziyimira pawokha (makamaka ma flanges), omwe ntchito yake ndikusunga chisindikizo pakati pa zolumikizira ziwiri panthawi yautumiki womwe udakonzedweratu. Washer ayenera kusindikiza malo olowa ndikuwonetsetsa kuti cholumikizira cholumikizira chisindikizo chapakati pazigawo ziwirizi. sing'anga yosindikizira ndi yosalowetsedwa komanso yosachita dzimbiri, ndipo imatha kupirira kutentha ndi kupanikizika.Ochapira nthawi zambiri amakhala ndi zolumikizira (monga ma flanges), zochapira, ndi zomangira (mongamabawutindimtedza ). Chifukwa chake, pozindikira kusindikiza kwa flange inayake, mawonekedwe onse olumikizana ndi flange ayenera kuwonedwa ngati dongosolo. Kugwira ntchito bwino kapena kulephera kwa makina ochapira kumadalira osati pa ntchito ya wochapira wopangidwa palokha, komanso pa kuuma ndi mapindikidwe dongosolo, roughness ndi parallelism wa olowa pamwamba, ndi kukula ndi yunifolomu katundu yomanga.

Zinthu zisanu za Kusankhidwa kwa Shim:

1.kutentha:

Kuphatikiza pa kutentha kwakukulu komanso kosachepera kogwira ntchito komwe kungathe kulekerera kwakanthawi kochepa, kutentha kovomerezeka kosalekeza kogwira ntchito kuyeneranso kuganiziridwa. Zinthu zotsuka zimayenera kukana zokwawa kuti zichepetse kupsinjika kwa washer, kuti zitsimikizire kusindikizidwa kwake pansi pamikhalidwe yogwirira ntchito. Zida zambiri zochapira zimatha kugwa kwambiri pamene kutentha kumawonjezeka. Chifukwa chake, chizindikiro chofunikira cha mtundu wa washer ndikupumula kwa washer pa kutentha kwina.

2. ntchito:

Imatanthawuza makamaka chidziwitso cha njira yolumikizira komwe makina ochapira ali, ndipo zinthu zoyenera zochapira ndi mtundu ziyenera kusankhidwa potengera zinthu za flange, mtundu wosindikizira wamtundu wa flange, roughness ya flange , ndi chidziwitso cha bawuti. Non zitsulo flanges ayenera kusankha gaskets ndi otsika pre tightening mphamvu zofunika, apo ayi pangakhale zinthu pamene gasket si wothinikizidwa panobe ndipo flange wakhala wosweka pa flange kumangitsa ndondomeko.

3.zapakatikati:

Chotsukiracho chiyenera kukhala chosakhudzidwa ndi sing'anga yosindikiza nthawi yonse yogwira ntchito, kuphatikizapo kutentha kwa kutentha kwa okosijeni, kukana kwa corrosion, kukana kwazitsulo, kukana kwa solvent, kukana kwa permeability, etc. posankha washer.

4.pressure:

Wochapirayo ayenera kupirira kupanikizika kwakukulu, komwe kungakhale kukakamiza koyesa, komwe kungakhale 1.25 mpaka 1.5 nthawi yanthawi zonse. Kwa ma gaskets osakhala achitsulo, kuthamanga kwawo kwakukulu kumagwirizananso ndi kutentha kwakukulu kwa ntchito. Nthawi zambiri, mtengo wa kutentha kwapamwamba kwambiri wochulukitsidwa ndi kuthamanga kwambiri (ie mtengo wa PxT) uli ndi malire. Chifukwa chake, posankha kuthamanga kwawo kwakukulu kogwira ntchito, ndikofunikira kuganiziranso kuchuluka kwa PxT komwe gasket imatha kupirira.

5. kukula:

Kwa ambiri omwe si-makina ochapira zitsulo , ochapira woonda amakhalanso ndi kuthekera kwakukulu kokana kumasuka kupsinjika. Chifukwa cha kagawo kakang'ono kakukhudzana pakati pa mbali yamkati ya chotsuka chopyapyala ndi sing'anga, kutuluka kwa thupi la washer kumachepetsedwanso, ndipo panthawiyi, mphamvu yowomba yomwe imayendetsedwa ndi washer imakhalanso yaying'ono, zomwe zimapangitsa kuti zikhale zovuta kwa washer kuti aphulitsidwe