Brief Introduction

JH-5270D is a kind of room temperature passivator. It can bu used for passivator surface treatment of steel and other materials. The thickness of the film will be influenced by the satiation of the metal,cleaning method and cooperate type. JH-5270D can be widely used in all kinds of paint. It can not needed to adjust. The process is simple. And it has good adhesion, high corrosion resistance. It is operated simply. The tank liquid is steady and the sediment is poor ,which can be used cyclely. We don’t need to change the tank. However ,the cost is lower. The film of this product is rainbow.

Preparation of tank liquid

Put three quarters cold water in the washing tank ,adding 50-100KG JH-5270D in every1000tank liquidadd sufficient water till working level.

control parameter

Appearance     light blue liquid

Free acid        1.5-3.5point

Total acid        15-35point

Temperature    Room temperature~50

Processing time   5-10min

process flow

Degreasing - washing - derusting -washing-surface conditioning - washing – washing

Preparation of tank liquid

Adjust 1000L total acid

With continuous working, total acid will drop, should inspect regularly and supplement, add 3kg of JH-8031B film forming agent, total acidity increased by 1 point. If the total acidity is too high, you can stop feeding, remain normal production, after a period of time to return to normal bath.

The reason cause the film to thin:

A Temperature too low

B Total acid too low

C Free acid too high

                   To make clean washing,overflow water volume should be kept in   the best                             range

test method

Total acid

Use pipette to move 10 ml solution to conical flask, add 3 to 4 drops of phenolphthalein indicator, then titrated with 0.1N NaOH , until the color from colorless to stable red, then the wasting 0.1N NaOH is the total acidity bath.

 Free acid

Use pipette to move 10 ml solution to conical flask,add 3 to 4 drops of bromorphenol blue indicator,then titrated with 0.1N NaOH,until the color from light yellow to light blue,then the wasting 0.1N NaOH is the total acidity bath.

Attention

All access to the equipment all requirements of this treatment with stainless steel or lined for fluoride resistant hard PVC or PE, do not use cast iron tub!

Attention

Wear protective glasses, rubber gloves and wear protective clothing during processing.

Avoid direct contact with eyes,skin,clothing and equipment.

Get medical attention if accident happen.

packing

25kg/barrel

guarantee period

One year

wastewater treatment

Tank liquid is acidic,and contain phosphate,sewage may be required to neutralize or waste water treatment.