1、in the typical part of the austenitic isothermal transition diagram, ie, about 500-600℃, the water is in the steam film stage, and the cooling speed is not fast enough, which often leads to the "soft point" formed by uneven cooling and insufficient cooling speed of forging.In the martensitic transformation system, that is, about 300-100℃, the water is in the boiling stage, the cooling Vitès se twò vit, fasil fè vitès la transfòmasyon martensitik se twò vit epi ki pwodui yon gwo kantite lajan nan estrès entèn yo, sa ki lakòz deformation a tou, oswa menm fann.

2 、 Tanperati dlo a gen yon gwo enfliyans sou kapasite refwadisman, kidonk li sansib pou chanjman tanperati anbyen. As the water temperature increases, the cooling capacity decreases sharply, and the temperature range of the maximum cooling rate moves to low temperature.When the water temperature exceeds 30℃, the cooling speed in the range of 500-600℃ decreases obviously, which often leads to the forging not to be hardened, but has little influence on the cooling speed in the range of martensite transformation.When the water temperature is raised to 60℃, the cooling rate will decrease pa apeprè 50%.

3 、 Lè dlo a gen plis gaz (tankou nouvo dlo), oswa dlo melanje ak enpurte solubl, tankou lwil, savon, labou, elatriye, pral siyifikativman diminye kapasite refwadisman li yo, se konsa itilize a ak jesyon yo ta dwe atansyon espesyal.
Dapre karakteristik yo ki refwadisman nan dlo, dlo H ka itilize pou asouvisman ak refwadisman nan asye kabòn forgings ak gwosè ti seksyon ak fòm senp.Kenching, dwe tou sonje: Kenbe tanperati a dlo ki anba a 40 ℃, pi bon ki genyen ant 15 a 30 ℃, epi kenbe dlo a oswa sikilasyon likid, oswa fè travay la. Ogmante degre nan refwadisman ant 500-650 ℃, kondisyon yo refwadisman, evite yo pwodwi pwen mou.

Soti nan: 168 Forgings nèt