Mukupanga astm a179chitoliro chozizira chokoka chosasokonekera chachitsulo, pali ozizira kuumitsa ndi wa hydrogen embrittlement chodabwitsa, amene amayamba ndi ozizira kukokedwa mopanda phokoso chubu akulimbana chifukwa chachikulu.

Kuwunika kwa chodabwitsa cha kuphulika kwa chitoliro cha astm a179 chozizira chokokedwa ndi chitoliro chosasunthika ndi chitoliro chaching'ono chachitsulo chosasunthika kudzera muzojambula kufa chifukwa chozizira kupanga kupanga kuzizira, njira yodutsamo nthawi zambiri imakhala yowongoka, pickling, kujambula.Chitoliro chachitsulo chozizira chokoka pang'ono chopanda msoko muzojambula, nthawi zina kuyambira koyambirira mpaka kumapeto monga momwe zimakhalira ndi mng'alu wa nsungwi, zomwe timatcha izi ndikusweka.

Zifukwa za kupasuka ndi:

Zotsatira za kuuma kwa ntchito, chitoliro chachitsulo chimapanga mapindikidwe ambiri a pulasitiki panthawi yozizira, kuchititsa kusokonezeka kwa lattice, komwe kumawonjezera mphamvu ya lattice ndikuwonjezera mphamvu yamkati yachitsulo, zomwe zimapangitsa kuti zitsulo zikhale zovuta kwambiri komanso zotsalira zotsalira. .Izi zidzawonjezera kuuma kwachitsulo, kulimba kumachepa.Kukwera kwachitsulo kuuma, kumapangitsanso kupanikizika kotsalira kwa mkati mkati mwa kujambula kozizira, ndizomwe zimawonekeratu kuti ntchitoyo imawumitsa chodabwitsa.Pamene nkhawa yotsalira kufika mtengo wina, zitsulo adzang'amba pamodzi ena tirigu mawonekedwe, mapangidwe wofatsa zitsulo chitoliro akulimbana.

Zotsatira za hydrogen embrittlement, mu ndondomeko ya descaling ndi asidi, asidi sulfuric ndi chitsulo zimatani precipitate haidrojeni.Hydrogen imalowa muzitsulo ngati ma atomu kapena ayoni kupanga njira yolimba.Zotsatira za haidrojeni pamakina azitsulo ndizofanana ndi hydrogen embrittlement.