Mhando dzePhosphate Kurapa kwePowder Coating

Mhando dzePhosphate kurapwa kwe powder coating

Iron phosphate

Kurapa nesimbi phosphate (inowanzonzi yakaonda layer phosphating) inopa yakanakisa adhesion zvivakwa uye haina mhedzisiro yakaipa mumichina yehupfu yekuputira. Iron phosphate inopa yakanaka corrosion dziviriro yekufumurwa mumakirasi ekudzika uye epakati, kunyangwe isingakwanise kukwikwidza ne zinc phosphate mune izvi. Iron phosphate inogona kushandiswa mupfapfaidzo kana dip nzvimbo. Huwandu hwematanho mukuita hunogona kusiyana kubva pa2-7, zvichienderana nebasemetal uye chinodiwa chekudzivirira. Nezve zinc phosphate kurapwa, iyo iron phosphate process ijeniralzvakachipa uye zviri nyore kuita Iyo phosphate layer inowanzo huremu pakati pe0.3-1.0g/m2.

Zingi phosphate

Iyo zinc phosphate process inoisa yakakora layer kupfuura iron phosphating, uye yakachengetedzwa zvakachengetedzeka kune base zvinhu. Zinc phosphate inewo yakanakira adhesion properties, kunyange mune dzimwe nguva inogona kuderedza mechanical kutendeseka (flexibility of the system. Zinc phosphate inopa yakanakisa corrosion dziviriro uye inokurudzirwa kuti pre-kugadziriswa kwesimbi uye galvanized simbi kuti aonekwe mumakirasi high corrosion. Zinc phosphate inogona kushandiswa kupfapfaidza kana kudhibha nzvimbo.Nhamba yematanho mukuita inosiyana pakati pe4-8.
Zinc phosphating inowanzo kudhura kupfuura iron phosphating, nekuda kwemitengo yakakwira yezvirimwa uye kushanda kunodhura.

Chromate

Akatevedzana akasiyana masisitimu anowanikwa mukati mechromate boka rekurapa. Iyo sisitimu yakasarudzwa zvinoenderana nerudzi rwesimbi kana alloy, rudzi rwechinhu (nzira yekugadzira: casr, extruded etc.) uye zvechokwadi, zvinodiwa zvemhando.
Chromate kurapwa inogona kukamurwa kuita:

Iyo yekupedzisira ndiyo yakajairika nzira yekutangira kurapwa isati yaiswa poda. Huwandu hwematanho mukuita hunogona kusiyana, zvichienderana nekuti zvakakura sei zvinhu zvinofanirwa kugadzirirwa chromating, semuenzaniso ne pickling, neut.ralization etc. uye zvinozotevera rinsing matanho.