Ntau xyoo ntawm cov khoom siv tshuab etching thev naus laus zis daim ntawv thov suav nrog qhov tseem ceeb ntawm pwm etching hauv cov txheej txheem pwm, pwm etching tshuab muaj ob txoj hauv kev.
(1) siv immersion etching;
(2) cov tshuaj etching yog txhaj rau hauv pwm-zoo li kab noj hniav rau etching.
Tsis muaj teeb meem dab tsi ntawm txoj kev etching yog siv, kev tsim cov tshuaj etching yog tus yuam sij kom tswj tau qhov nrawm nrawm, tab sis kuj yuav tsum tau ua kom lub ntsej muag du thiab kev puas tsuaj me me rau cov tshuaj tiv thaiv etching. Rau cov yas pwm duab etching feem ntau siv cov mis yog siv nitric acid, phosphoric acid, sulfuric acid los npaj peb cov kua qaub etching tov, cov mis no etching ceev yog nruab nrab, etched nto smoothness yog zoo, etching tov yog ruaj khov thiab yuav khaws cia rau. lub sij hawm ntev, thaum no etching tus neeg saib xyuas rau feem ntau tiv tus number case muaj kev ruaj ntseg zoo dua.
Tshuaj degreasing tu txoj kev zoo dua tu cov pwm saum npoo, thaum tu cov nqi qis dua cov kuab tshuaj organic, kev nyab xeeb siab, tab sis kev nqis peev hauv cov khoom siv loj dua, rau cov pwm loj me me hauv cov txheej txheem ntxuav kuj yuav tsum muaj lub tsheb mus ncig. Cov txheej txheem ntawm cov tshuaj degreasing: pwm los ntawm kev txais - ua ntej ntxuav cov roj tiv thaiv - dai - tshuaj degreasing - dej kub ntxuav - theem nrab ntws dej ntxuav - acid ntxuav - Tertiary ntws dej ntxuav - tus kheej tshuaj xyuas cov roj tshem tawm cov nyhuv - passivation - tertiary ntws dej ntxuav - dej kub ntxuav - ziab - hauv qab dai - tig los tiv thaiv corrosion txheej ntau lawm.