Nkhani

1.Zifukwa za Kuwonongeka kwa Shrinkage:

2.Malangizo Opewa Kuwonongeka Kwa Kuchepa:

Kusiyana kwakukulu pakati pa kutembenuka ndi mphero ndi momwe chogwirira ntchito ndi zida zimayendera.Potembenuza, chogwirira ntchito chimazungulira ndipo chida chodulira sichimatero. Mu mphero, chida chodulira chimasuntha ndikuzungulira pomwe chogwirira ntchito chimakhala chokhazikika

Electrolytic polishing ndi electroplating ndi njira ziwiri zochiritsira zomwe zimagwiritsidwa ntchito pamagetsi. Komabe, amasiyana muzotsatira zawo ndi njira zochiritsira.