Takulandilani ku CHUANGRONG

Malinga ndi Malamulo aukadaulo a Kuyika kwa Madzi Onyamula DIN1988, kukakamiza koyeserera kuyenera kukhala nthawi 1.5 ya mphamvu yogwirira ntchito pamapaipi.

Mukayesa kukakamiza, zinthu zapaipi za PP-R zimatsogolera pakukulitsa chitoliro, chomwe chimakhudza zotsatira zake. Chikoka china pa zotsatira zoyesa chikhoza kuyambitsidwa ndi coefficient of thermal expansion of PP-R mapaipi. Kutentha kosiyana kwa chitoliro ndi sing'anga yoyesera kumatsogolera kusiyana kwa 0.5 mpaka 1 bar. Chifukwa chake, kuchuluka kwamphamvu kopitilira muyeso kwa sing'anga yoyeserera kuyenera kutsimikiziridwa pakuyesa kwa hydraulic pressure yoyika ndi mapaipi a PP-R.

Kuyesa kwa hydraulic pressure kumafuna chiyeso choyambirira, chachikulu komanso chomaliza. Pakuyesa koyambirira, kukakamiza koyeserera kopitilira 1.5 nthawi yogwira ntchito kwambiri kuyenera kupangidwa. Kukakamiza kwa mayesowa kuyenera kukhazikitsidwanso kawiri mkati mwa mphindi 30 mkati mwa mphindi 10. Pambuyo pa mayeso opitilira mphindi 30, kukakamizidwa kwa mayeso kuyenera kusagwetsa tnan 0,6 bar ndipo palibe kutayikira komwe kudzawonekera.

Kuyesa koyambirira kumayenera kutsatiridwa mwachindunji ndi mayeso ofunikira. Nthawi yoyesera ndi 2 hours. Pochita izi, kuthamanga kwa mayeso sikungagwere kuposa 0,2 bar. Mayeso oyambilira ndi akulu akamaliza, mayeso omaliza amatsatiridwa, omwe amayenera kuchitidwa ndi kukakamiza koyeserera kwa 10 bar ndi 1 bar mumayendedwe osachepera mphindi 5. Pakati pa mayeso aliwonse, kukakamizidwa kuyenera kumasulidwa. Palibe kutayikira komwe kungawonekere nthawi iliyonse.