Electrophoresis pretreatment liquid KD-312B phosphating liquid

This product is a room temperature zinc phosphating liquid, an upgraded product of KD-312A, with better anti-corrosion ability, and can form a uniform and dense phosphate conversion film on the surface of steel zinc alloy, which can be used as a coating base, greatly enhancing the adhesion and anti-corrosion ability of the paint. It has a wide range of processes, contains a variety of phosphating accelerators, and forms a film quickly and evenly. It is widely used in various fields of the automotive industry. It is used with KD-332 phosphating accelerator for better results. It is characterized by good stability, easy and convenient parameter control, and simple use.

1. Technical Standards
Appearance: light green transparent liquid.
Total acid: 600±50 points
Free acid: 100±10 points
Density: 1.40±0.05 (g/cm3)
Alkali resistance of phosphate film: ≤10%

II. Construction technical parameters 
Total acid: 20±3 points
Free acid: 1.0±0.2 points
Treatment temperature: 25～35℃
Treatment time: 3-5 minutes (immersion) 1.5-2.5 minutes (spraying)
Accelerator points: 2-2.5 points
Suitable treatment methods: immersion and spraying

III. Key points for safe operation
KD-311 contains more than 10% phosphoric acid and soluble metal ions; the neutralizer contains alkali, so you should pay attention to eye and skin protection when using it, and rinse with plenty of water if you come into contact with it.

IV. Packaging and storage
Plastic barrel packaging, when the temperature of the storage warehouse is low, if crystals precipitate, heat and dissolve them before adding