INDUSTRIA BERRIAK

What is the cause of loose film when the aluminum profile is black at room temperature? How to deal with it?

2019-05-05
Arrazoia:
1 Garbiketa eta garbiketa sakonak ez badira, beltzak egin ondoren sortutako film beltza poliki-poliki ezabatuko da;
2 activation is not good;
3 beltz denbora luzea da;
4 dilution ratio is small, the solution content is high, and the nitrite content is high;
5 solution acidity is high; &n aluminum alloy building profile insulation profile bsp;
6 kobrezko ordezkapena azkar, ez da nahikoa aditiboak;
7 olio murgiltze denbora laburra da.

Approach: 
1 Aurre-tratamendua indartzea, arreta jartzea eta garbitzea;
2 After degreasing, the parts must be fully activated, not only to neutralize the residual lye on the surface, but also to activate the metal surface and increase the bonding strength between the film and the substrate;
3 denbora murriztailea murriztea
4 to strictly dilute the formulation solution according to the formulation requirements;
5 can be neutralized with NaOH;
6 gehitu gehigarriak;
7 extend the oil immersion time.