QUALITY CONTROL AND ASSURANCE
Our dedication in continuously improving our powder coating process provided with extra benefit and values to our customer from our Quality Assurance team.
Our expertise ensure of each coating process cycle in the production line is operating smoothly and in-transition accordingly without any interruption and meeting the quality of standard requirement.
Following are the Values of Quality Assurance and capability
EXPERTISE TEAM
Dedicated experienced team responsible in quality control and assessment to ensure materials achieve the required standards and requirements.
REPORTING
Various of reporting is documented and kept. Upon on request, the related reporting will be provided
FACILITIES AND TOOLS
Our department is facilitate with the tools and equipments for performing any quality test and checks
RECOGNITION
We are certified to assess and evaluate the quality of results and authorised by approved applicator and accredited ISO:9001
Quality of Powder Coatings Depends On:
- Control of incoming raw materials
- Quality control of the powder coating process
- Quality control testing of the finished powder coating materials
- Control of the cured powder coating film performance properties
QUALITY ASURANCE FACILITIES
Our team will perform the require quality test and quality check on the materials or products before and after the process from our facility throughout the entire powder coating workflows and for any defect materials will be sent to QC team to perform the quality test.
Our facility inclusive of quality control laboratory operating with the complete set of equipments and tools to perform any quality check and quality test on all process materials managing by our group of QC expertise team
Following are the numerous quality test and quality check type can be conduct from our laboratory -
Coating thickness tester
Coating Thickness According to the standards EN ISO 2808, powder coating film thickness is measured with a micrometer.
Coating thickness is measured at five points (min.1 cm2) on the surface and approximately 3 readings are taken at each point.
The average of the readings at each point is written as ” the measurement result’’ on the test report.
If any of these measurement results is less than 80% of the required value, the result is negative.
The measurement results are evaluated as shown in the examples given below.
Gloss Meter Measurement
It is important to measure the gloss as the paint application progress, this helps in early detection of wrong application and saves time and efforts. Also, it helps in determining the degradation in the coating as exposed to real working conditions.
Gloss According to the standards EN ISO 2813,gloss is measured objectively with a gloss meter.
The gloss is measured in general under an angle of 60°.
The expected values ; Glossy 71-100 GLOSS Semi-Mat 31-70 GLOSS Mat 0-30 GLOSS
The higher the gloss level, the higher the reflectance
Coating Thickness Gauge
The coating thickness gauge is an instrument for measuring the surface coating thickness on various substrates.
To select a coating thickness gauge, we need to know the substrate first.
Coating thickness gauges that can non-destructively measure the metal substrate or non-metal substrate are most widely used.
Such as the high-precision coating thickness gauges of magnetic thickness measurement and eddy current thickness measurement principles and ultrasonic coating thickness gauges.
Magnetic thickness measurement + eddy current thickness coating thickness gauge can measure the non-magnetic coating thickness on the magnetic metal substrate surface and the non-conductive coating thickness on the non-magnetic metal substrate surface.
Impact Tester
An impact testing machine is used to determine the resistance of a material or component to a rapid load under varying temperature conditions.
According to the standards EN ISO 6272, deformation of powder coated surface is tested with an impact tester.
It works with a mass of 1 kg that falls from different heights on the coated surface (direct : on the coating, indirect :on the reverse side of the coated test panel).
The impact test should be carried out on reverse side of the significant surface, but the result should be evaluated from the significant surface side. The test should be carried out on coating with minimum thickness required.
The impact is quoted in kg.cm, as no cracking.
MEK Test - Chemical Resistance
This test method is used to determine the degree of cure of a baked film by the paint film resistance to a specified solvent.
The Solvent Rub Test is usually performed using methyl ethyl ketone (MEK) as the solvent.
The MEK resistance or degree of cure applies to paint topcoats and primers.
ASTM D4752 involves rubbing the surface of a baked film with cheesecloth soaked with MEK until
failure or breakthrough of the film occurs.
The type of cheesecloth, the stroke distance, the stroke rate, and approximate applied pressure of the
rub specified.
The rubs are counted as a double rub (1 rub forward and 1 rub backward constitutes a double rub).
It provides a quick relative estimation of degree of cure without waiting for long-term exposure results.
It has been reported that the tests of two-component zinc-rich primers has shown good
correlation with the cure of the primer as determined by diffuse reflectance infrared spectroscopy
Visual Checks
Uses the light boxes to control the light.Light boxes range in cost, but they will provide consistent results.
The other element to consider with lighting is the distance from which you are viewing the surface, especially when checking for any type of surface defects.
You will get a different result if you look at a 90-degree angle at arm’s length than from a 45-degree angle closer up.
Our advice would be to do the visual test with lighting in an office-type setting, out on the shop floor and outside in the daylight – cover all bases
Our QA team will periodically perform their task in production line based on the requirement. Following is the standard workflow for our QA in the production line.
Overview
Following table shows the task responsible by our QA team
