1. Chithandizo kalekumizidwamkuwa 

1). Burrndi

The pobowola ndondomeko gawo lapansi pamaso mkuwa kumira n'zosavuta kubala burr, amene ndi yofunika kwambiri chobisika ngozi kwa metallization wa mabowo otsika.Iyenera kuthetsedwa ndi ukadaulo wa deburring.Kawirikawiri ndi mawotchi njira, kuti dzenje m'mphepete ndi mkati dzenje khoma popanda barbed kapena dzenje kutsekereza chodabwitsa.

1).Kuchepetsa mafuta

2). Coarse processing:

Imatsimikizira makamaka mphamvu yolumikizana pakati pa zokutira zachitsulo ndi matrix.

3)Kuyambitsa chithandizo:

"Likulu loyambira" limapangidwa kuti lipange yunifolomu yoyika mkuwa

1. Zifukwa za kutsekeka kwa khoma la dzenje:

1)Khoma lakutchingira dzenje lopangidwa ndi PTH

(1) Mkuwa wokhala ndi silinda ya mkuwa, sodium hydroxide ndi ndende ya formaldehyde

(2) kutentha kwa thanki

(3) Kuwongolera kwa madzi oyambitsa

(4) Kutentha kutentha

(5) kutentha ntchito, ndende ndi nthawi ya pore wothandizira lonse

(6) Kutentha kwa utumiki, ndende ndi nthawi ya kuchepetsa wothandizira

(7) Oscillator ndi kugwedezeka

2)Kutengerapo chitsanzo chifukwa cha dzenje khoma ❖ kuyanika mabowo

(1) Chimbale chokonzekera kale

(2) guluu wotsalira wa orifice

(3) Microcorrosion ya pretreatment

3)Chithunzi plating chifukwa dzenje khoma ❖ kuyanika mabowo

(1) Graphic electroplating microetching

(2) Kupaka malata (lead tin) kusabalalika bwino

Pali zinthu zambiri zomwe zimayambitsa dzenje lophimba, chofala kwambiri ndi dzenje la PTH, poyang'anira magawo ofunikira amatha kuchepetsa kupanga dzenje la PTH.Koma zinthu zina sizinganyalanyazidwe, pokhapokha poyang'anitsitsa mosamala, kumvetsetsa chifukwa cha dzenje lophimba ndi maonekedwe a zolakwika, kuti athetse vutoli panthawi yake komanso moyenera, kusunga khalidwe la mankhwala.