Brief Introduction

JH-8245 is low chromium product,the color of film is light yellow to golden rainbow film.Can use together with acid aluminum parts cleaning agent,simplifying working process,save investment, improve efficiency.

Preparation of tank liquid

Add three-quarters of cold water into working tank,add 10kg JH-8245 for each 1000kg tank liquid.

control parameter

Appearance      Orange and red liquid

Density         1.1-1.2

PH             1.7-2.2

Temperature     Room Temperature-40 

Processing time  3-10min

process flow

Degreasing - washing - washing - film forming - washing - washing - drying

Preparation of tank liquid

1) After working for some time, the efficiency will be decreased. Then should add JH-8245 film forming agent                  

2)When the tank liquid using time is too long, Al3 +and too much impurity ions, should consider replacing the working fluid

test method

Density

Take a certain amount of sample, keeping it at 25 , the density was measured with a hydrometer.

Free acid

1) pipette take 10 ml liquid into the Erlenmeyer flask

2) drops 3 to 4 drops of bromophenol blue indicator;

3) while swinging with 0.1N sodium hydroxide to color from yellow to blue;

4) the number of 0.1N sodium hydroxide used is free acidity.

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 hexavalent chromium, the waste should send to waste water treatment statio.