Zeziphi ezona zinto zingeloncedo zamanzi njengendawo yokupholisa yokucima kwifogi?

1) kwimephu yenguqu ye-austenite isothermal yendawo eqhelekileyo, oko kukuthi, malunga ne-500-600 ℃, amanzi kwinqanaba lefilimu yomphunga, isantya sokupholisa asikhawulezi ngokwaneleyo, sihlala sibangela ukungalingani.ukwenzaukupholisa kunye nokungonelanga kwesantya sokupholisa kunye nokwakhiwa kwe "soft point". Kwinkqubo yokuguqulwa kwe-martensite, oko kukuthi, malunga ne-300-100 ℃, amanzi akwinqanaba lokubila, izinga lokupholisa likhawuleza kakhulu, kulula ukwenza isantya senguqu ye-martensite ngokukhawuleza kwaye ivelise uxinzelelo oluninzi lwangaphakathi, olukhokelela i-deformation yokubumba kunye nokuqhekeka.
2) Ubushushu bamanzi bunempembelelo enkulu kumthamo wokupholisa, ngoko ke bunovelwano kutshintsho lobushushu be-ambient. Njengoko ubushushu bamanzi bukhuphuka, amandla okupholisa ayancipha ngokukhawuleza, kwaye uluhlu lweqondo lokushisa lomgangatho ophezulu wokupholisa luhamba kwiqondo lokushisa eliphantsi. Xa ubushushu bamanzi bungaphezu kwe-30 ℃, izinga lokupholisa liyehla kakhulu kuluhlu lwe-500-600 ℃, oluhlala lukhokelela ekuqinisweni kweforgings, kodwa inempembelelo encinci kwisantya sokupholisa kuluhlu lwenguqu ye-martensite. Xa ubushushu bamanzi bunyuka ukuya kuma-60℃, izinga lokupholisa liyakwehla malunga ne-50%.

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3) xa amanzi equlethe igesi eninzi (njengamanzi asanda kutshintshwa), okanye amanzi axutywe nokungcola okunganyibilikiyo, okufana ne-oyile, isepha, udaka, njl. ukuya.
Ngokweempawu zokupholisa zamanzi, amanzi ngokuqhelekileyo H anokusetyenziswa ukucinywa kokupholisa kwentsimbi yekhabhoniforgingskunye nobukhulu becandelo elincinci kunye nemilo elula. Ukucima, kufuneka kwakhona uqaphele: gcina ubushushu bamanzi ngaphantsi kwe-40 ℃, eyona nto ingcono phakathi kwe-15 ukuya kwi-30 ℃, kwaye ugcine amanzi okanye ukujikeleza kwamanzi, ukutshabalalisa.ukwenzaUmphezulu wenwebu yomphunga, unokusebenzisa i-workpiece ye-swing ngexesha lokucinywa (okanye wenze i-workpiece ihle inyuka ihle) indlela yokuguqula inwebu yomphunga, yonyusa isantya sokupholisa phakathi kwe-500-650 ℃, iimeko zokupholisa, ukuphepha ukuvelisa indawo ethambileyo.


Ixesha lokuposa: Jun-09-2021

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