Dab tsi ua rau Hardening

Jul 12, 2023

tsis ua hauj lwm hom:

 

Hardening

 

ua tsis tiav:

 

ib. impurity diffusion

 

b. tawm ntawm diffusion ntawm softeners

 

c. tom qab curing

 

d: thermal overloading

 

kev kho mob:

 

ib. xaiv cov khoom tsim nyog

 

b. yog tias tsim nyog, hloov cov kua dej

 

c.yog muaj, txo qhov kev khiav hauj lwm kub