Phosphate Coatings Pretreatment yeSimbi Substrates

Phosphate Coatings Pretreatment yeSimbi Substrates

Iyo inozivikanwa pre-kurapwa kwesimbi substrates nguva isati yatanga kushandiswa kwehupfu ndeye phosphating iyo inogona kusiyanisa mukuyerwa kwehuremu.

Iyo yakakura iyo yekuchinjisa coating uremu ndiyo yakakura dhigirii yekudzivirira kwemarara inowanikwa; iyo yakaderera coating uremu zviri nani michina zvinhu.

Saka zvinodikanwa kuti usarudze kuwirirana pakati pema mechanical properties uye kurwisana nekuora. High phosphate coating weights inogona kupa dambudziko nazvo kupfeka hupfu mune iyo kutsemuka kwekristaro kunogona kuitika kana kupfekedzwa kuri pasi pesimba rinoshandiswa munharaunda, semuenzaniso. kukotama kana kukanganisa.

Nekuda kwekunamira kwakanakisa kwehupfu hwekufukidzira kune phosphate coating, disbondment inowanzoitika paphosphate/metal substrate interface kwete pane iyo phosphate/upfu yekuputira interface.

Phosphate coatings yakafukidzwa neBS3189/1959, Kirasi C ye zinc phosphate uye Kirasi D yesimbi phosphate.
A fine grain crystalline zinc phosphate inokurudzirwa pakupfekedza huremu hwe1-2g/m2 uye yesimbi phosphate pa 0.3-1g/m2. Kushandiswa kunogona kuitwa nepfapfaidzo kana dip. Chromate passivation haiwanzodikanwa.

Iron phosphate coatings inowanzopfapfaidzwa inoiswa mumatanho matatu kana mana. Basa racho rinowanzopfuura nepakati pezvikamu zviviri zvekusuka mvura isati yaoma.

Zinc phosphate inogona kupfapfaidza kana dip kuiswa mukuita nhanho shanu, kureva. alkali degrease, sukurudza, zinc phosphate, maresheni maviri emvura.

Izvo zvakakosha kuti workpiece mushure me phosphating ipfu yakaputirwa nekukurumidza sezvinobvira mushure mekuoma.

Phosphate Coatings Pretreatment