Main Mbali
Chifukwa chomwe mphika wokhala ndi jekete ukhoza kugwiritsidwa ntchito kwambiri pokonza chakudya komanso makhitchini akuluakulu ophikira makamaka amapindula ndi zabwino ziwiri:
1. Mphika wokhala ndi jekete umatenthedwa bwino. Boiler yokhala ndi jekete imagwiritsa ntchito nthunzi yamphamvu inayake monga gwero la kutentha (kutentha kwamagetsi kungagwiritsidwenso ntchito), ndipo imakhala ndi mawonekedwe a malo otentha kwambiri, kutentha kwambiri, kutentha kwa yunifolomu, nthawi yochepa yowira yazinthu zamadzimadzi, komanso kuwongolera kosavuta kutentha.
2. Mphika wokhala ndi jekete ndi wotetezeka komanso wosavuta. Mphika wamkati wamkati (mphika wamkati) wa mphika wa jekete umapangidwa ndi chitsulo chosapanga dzimbiri cha asidi komanso chopanda kutentha cha austenitic, chokhala ndi makina opimitsira mphamvu ndi valve yotetezera, yomwe imakhala yokongola, yosavuta kuyiyika, yosavuta kugwiritsa ntchito, yotetezeka komanso yodalirika.