Lub hauv paus ntsiab lus tsim khoom thiab kev siv cov tshuaj phosphating rau electrogalvanizing ntawm hluav taws xob cua sov raj

Lub hauv paus ntsiab lus tsim khoom thiab kev siv cov tshuaj phosphating rau electrogalvanizing ntawm hluav taws xob cua sov raj

Qhov hu ua nyuaj rau tshuaj tsuag workpieces feem ntau yog vim muaj ib lossis ob peb yam hauv qab no: 1. Muaj ntau qhov chaw tuag, nqaim thiab sib sib zog nqus qhov khoob, uas ua rau muaj zog electrostatic shielding los. 2. Cov tsos yog du heev, thiab cov hmoov txau tau yooj yim tawg los ntawm cov cua ntws ntawm rab phom tsuag. 3. Qhov tsis zoo conductivity cuam tshuam cov ntsiab lus tseem ceeb ua haujlwm ntawm electrostatic txau.

1, Raw khoom rau kev tsim phosphating tov:

1. Cov khoom siv raw siv hauv kev cob qhia hauv tsev neeg:

A. 85% phosphoric acid (kua) ntxiv rau zinc dihydrogen phosphate (hmoov) ntxiv rau zinc nitrate (hmoov)

B. 85 feem pua ​​​​phosphoric acid (kua) ntxiv rau 40 feem pua ​​~ 98 feem pua ​​nitric acid (kua) ntxiv rau 95 feem pua ​​zinc oxide (hmoov) lossis zinc slag lossis tshauv (khoom)

Lus Cim: Cov khoom xyaw tsis raug yog li 30 feem pua.

2. Cov khoom siv raw siv hauv cov qauv thoob ntiaj teb:

A. 85% phosphoric acid (kua) ntxiv rau 68% nitric acid (kua) ntxiv rau 99.7% zinc oxide (hmoov)

B. 85% phosphoric acid (kua) ntxiv rau 68 feem pua ​​nitric acid (kua) ntxiv rau 99.99 zinc ingot (hlau)

Nco tseg: Cov khoom siv tsis raug yog kwv yees li 10 feem pua.

2, Cov txheej txheem thoob ntiaj teb tshuaj muaj pes tsawg leeg (tag nrho acidity) ntawm phosphating kua yog kua hauv lub xeev:

A. Phosphoric acid (kwv yees li 20 feem pua) ntxiv rau zinc dihydrogen phosphate (kwv yees li 35 feem pua) ntxiv rau zinc nitrate (kwv yees li 35 feem pua) ntxiv rau zinc phosphate (li 10 feem pua ​​ntawm cov khoom siv tsis zoo)

B. Phosphoric acid (li 20 feem pua) ntxiv rau zinc dihydrogen phosphate (kwv yees li 45 feem pua) ntxiv rau zinc nitrate (kwv yees li 35 feem pua)

Lus Cim: Raws li "Cov Lus Txhais ntawm Lub Cev Khoom ntawm Cov Khoom Siv Tshuaj"

1. Zinc dihydrogen phosphate yog dawb crystalline lossis viscous kua uas yog soluble hauv dej thiab kua qaub, thiab cov kua aqueous yog acidic. Raws li cov khoom tseem ceeb ntawm phosphating txheej tus neeg sawv cev, nws yog siv los tiv thaiv corrosion ntawm hlau.

2. Zinc phosphate yog cov xim tsis muaj xim rhombic lossis dawb microcrystalline hmoov, soluble hauv inorganic acids (hydrochloric acid, sulfuric acid, nitric acid, phosphoric acid); Insoluble hauv ethanol; Dej yog yuav luag insoluble, thiab nws solubility txo nrog nce kub.

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