ZX-161 Anti-Explosion Electrical Equipment Phosphating Paste for Explosion-Proof Surfaces

I: Product Introduction

ZX-161 Anti-Explosion Phosphating Solution for explosion-proof surfaces is a phosphating paste used for motor explosion-proof surfaces and maintenance of coal mining equipment. Produced with a German formula, its technical indicators fully meet the requirements for phosphating motor explosion-proof surfaces and comply with the national standard GB/T3836. Its outstanding features include fast film formation, excellent rust prevention, and stability, with a film thickness reaching 8-10μm, presenting a dark red (copper-red) color. It is a specialized phosphating paste for coal mining machinery equipment and anti-explosion electrical equipment.

II: Technical Process Indicators

Operating Temperature: Room Temperature

Processing Time: 3-30 (minutes)

(Select appropriate processing duration based on different treatment methods)

Total Acidity (TA) of Working Solution: 60--65 points

Free Acidity (FA) of Working Solution: 4—5 points

Treatment Method: Application

Process Flow: First, thoroughly remove oil and rust from the workpiece surface – Rinse with water –

ZX-161 Phosphating Treatment – Drying – Next process (application of anti-rust oil or Vaseline)

III: Usage Method

After removing oil and rust from the pre-treated steel surface, use a brush to evenly apply the phosphating paste onto the metal surface. A thin layer (about 2 mm) is sufficient. After reacting for 5-10 minutes, brush back and forth several times with a soft brush. When the color of the phosphating paste turns milky white, wipe off the paste with a soft towel. Reapply a fresh layer of phosphating paste evenly and react for about 10 minutes. Repeat the above steps until the explosion-proof surface turns dark red (copper-red). After drying, apply anti-rust oil or anti-rust wax, etc.

IV: Testing of Tank Solution

1. Total Acidity (TA): Take 10 grams of phosphating paste, add it to a 250 ml conical flask, and mix with 100 ml of water. Add 2-3 drops of phenolphthalein indicator and titrate with 0.1 mol/L standard NaOH solution until the solution turns pink. The number of milliliters of standard NaOH solution consumed is the total acidity points.

2. Free Acidity (FA): Take 10 grams of phosphating paste, add it to a 250 ml conical flask, and mix with 100 ml of water. Add 2-3 drops of bromophenol blue indicator and titrate with 0.1 mol/L standard NaOH solution until the solution turns blue. The number of milliliters of standard NaOH solution consumed is the free acidity points.

V: Packaging, Transportation, and Storage

Packaged in reinforced plastic buckets with a net weight of 25 kg or 30 kg. Transport as ordinary chemicals. Store in a cool, ventilated place. Shelf life: 12 months.