Valavu ya Mpira ya Chitsulo Yopangidwa ndi LF2 Yogwiritsidwa Ntchito Pakutentha Kotsika - Malangizo Othandiza Ochokera ku Kupanga

Kumbali ya zinthu, ASTM A350 LF2 imapangidwira kugwiritsidwa ntchito kutentha kochepa, nthawi zambiri mpaka pafupifupi -46°C. Komabe, kusinthasintha ndikofunikira. Ngati chiŵerengero cha forging kapena kutentha sikuyendetsedwa bwino, mutha kuwona kusiyana pakati pa magulu. Pa ntchito zina zokhudzana ndi LNG, makasitomala amasamala kwambiri zotsatira za mayeso, ndipo pamenepo kuwongolera zinthu kumakhala kofunikira kwambiri pa valavu yachitsulo yopangidwa ndi LF2.

Ponena za kapangidwe kake, matupi opangidwa ndi zitsulo nthawi zambiri amakondedwa kuposa opangidwa ndi zitsulo zotayidwa pa ntchito yamtunduwu. Kapangidwe kake ndi kokulirapo, ndipo palibe chiopsezo chocheperako cha zolakwika zamkati. Pazingwe zopanikizika kwambiri kapena zogwirira ntchito kwa nthawi yayitali, valavu ya mpira wachitsulo yopangidwa ndi LF2 imakhala chisankho chotetezeka.

Kukonza makina ndi gawo lina lomwe mavuto angawonekere. Pa kutentha kochepa, zigawo zimachepa. Ngati mpira ndi mpando sizikugwirizana mokwanira, ngakhale kusintha pang'ono kungayambitse kutuluka kwa madzi. Malinga ndi zomwe takumana nazo, kusunga ulamuliro wolimba pa malo otsekera ndikugwiritsa ntchito mipando yofewa monga RTFE kumathandiza kuti valavu ya mpira yachitsulo ya LF2 yopangidwa ndi zitsulo ikhale yotsekedwa.

Kutseka tsinde ndi chinthu chomwe nthawi zambiri chimanyalanyazidwa pakapangidwe kake. Zipangizo zopakira zimatha kuuma kutentha kochepa, zomwe zimawonjezera mphamvu yogwirira ntchito ndipo zingayambitse kutayikira pang'ono pakapita nthawi. Ichi ndichifukwa chake mapangidwe a bonnet otalikira nthawi zambiri amagwiritsidwa ntchito pa valavu yachitsulo yopangidwa ndi LF2, kuti malo opakira azikhala kutali ndi malo ozizira kwambiri.

Ntchito zomwe zimagwiritsidwa ntchito nthawi zambiri zimaphatikizapo makina a LNG, malo osungiramo kutentha kochepa, ndi mizere ina ya mankhwala. Kupatula valavu yokha, zikalata nthawi zambiri zimafunika, monga satifiketi ya EN 10204 3.1 ya zinthu ndi malipoti oyesera zotsatira, makamaka pamapulojekiti omwe ali ndi zofunikira zokhwima.