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(KODEST)Blade corrosion resistance test

(KODEST)Blade corrosion resistance test

The placement of blades in the salt spray box: Each blade is placed with its edge facing upwards at a 150-200 angle to the vertical plane, with a blade spacing of 2 cm;
Conduct a 168 hour salt spray test according to GB/T1771-1991;

Clean the blade and floating rust on the blade after salt spray test with a wool brush dipped in 5% acetic acid solution, rinse thoroughly with clean water, and finally rinse with deionized water and quickly dry with a hair dryer. Immediately observe the corrosion and foaming morphology of the blade under a 50x microscope and record it.

Result evaluation
Evaluate based on the corrosion and bubble size at the blade edge. Generally, six blades are made in parallel, and the arithmetic mean of the results is taken.

This simple method provides a crucial metric for comparing the corrosion resistance of different blade materials or coatings.
dgkede
2025-07-11
(KODEST)Spotted marks on the surface

(KODEST)Spotted marks on the surface

1 Phenomenon
Due to contamination of the substrate surface or phosphating film, speckles or map like marks can still be seen on the surface of the dry paint film after electrophoretic coating. The difference between it and water droplets and paint stains is that the coating surface is still flat, but it has an impact on the water and corrosion resistance of the coating film.

2 Causes
1) Insufficient water washing after phosphating.
2) The water quality after phosphating washing is poor.
3) The phosphating treated coated surface is contaminated again.

3 Prevention and Control
1) Strengthen phosphating and wash with water to check if the nozzle is blocked.
2) Strengthen the water quality management of phosphating and water washing, and ensure that the drip conductivity of the workpiece after pure water washing is ≤ 50 µ S/cm.
3) Prevent secondary pollution of workpieces, keep the environment clean, and prevent hanging fixtures from dripping water
The unique surface texture also offers excellent grip, making KODEST suitable for applications where tactile interaction is crucial.
dgkede
2025-07-10
GEL score determination method

GEL score determination method

(1) Test steps
Method 1: Room temperature solvent soaking method
1. After numbering the phosphating steel plate, accurately weigh the mass of the phosphating steel plate (accurate to 0.001g) and record it as W0.

2. Prepare a paint film sample according to the standard requirements, cure it, and then place the sample in a dryer for cooling and weighing. Record it as W1 (accurate to 0.001g).

3. Immerse the sample in a specified mixed solvent at room temperature for 24 hours, then remove the sample and wipe off any residual solvent on the surface with filter paper while observing the condition of the sample surface.

4. After drying the sample in a 105 ℃ oven for 30 minutes, take it out and cool it to room temperature in a dryer. Then accurately weigh the mass of the sample on a balance (accurate to 0.001g) and record it as W2.

Finally, statistical analysis plays a crucial role. The raw scores from different components are often standardized and combined using statistical methods to generate a reliable and comparable GEL score across various test sessions and candidate groups.
dgkede
2025-07-08
(KODEST)Professional electrocoat

(KODEST)Professional electrocoat

Kodest Professional electrocoat (Pigment Paste&Emulsion). Can provide good anti-corrosion for metal surface treatment, by improving and lead-free resin to meet the high anti-corrosion requirements of the automotive industry, the salt spray resistance can reach ≥ 1000h. Our E-coat can achieve better coating effect. 

Get the best E-coat solution now!
dgkede
2025-07-07

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