Quality Management

Earning Our Customer’s Trust

The magnet, as the significant part for assemble, before released from the magnet factory, it is essential that it successfully passes an inspection of demanded standards set to meet the customer’s needs. Giving our customers the confidence that every magnet will be delivered on-time and according to specifications.

Micrometers used to check the size of magnets, showcasing precision tools for accurate measurements in quality control.

Dimensional & Apperance Inspection

Considering about the accuracy, efficiency, and cost competitiveness, human inspection alone is unable to keep up with the pace. So we have invested in automatic inspection machines that quickly and accurately measure multiple dimensions, appearance, and reject unqualified parts at a very high production rate.

Measuring Dimensions

From blanks to finished products, we use calipers, micrometers, and other precise measurement tools to measure magnets’ dimensions. In manufacturing, we may discover any variations and take remedial steps if required by comparing the actual size of the magnets to the design specifications. This guarantees that the magnets fulfill the size, shape, and tolerance requirements, for their correct performance and compatibility with other components in an assembly.

Automatic visual inspection machine for magnets, designed to detect imperfections and ensure product quality through advanced imaging technology.

Measuring Apperance

Cracks, chips, anomalies in form or surface finish, and inconsistencies in coating or plating are all common faults to check for. Identifying these flaws early in the quality control process ensures that only high-quality magnets are utilized in applications, reducing the chance of failures or malfunctions.

Measurement of Pull Force & Gauss

Measure the Pull Force

Pull force refers to the amount of force required to separate the magnet from a ferromagnetic material, such as iron or steel, when they are in direct contact with each other.

Determining the pull force may better understand the magnet’s performance in real-world applications such as holding or lifting things.

Pull force testing machine for magnets, used to measure magnetic strength and ensure quality control in manufacturing.
JiaDa utilizing machines to measure the magnetic field and surface Gauss, demonstrating precision testing and quality assurance in magnet production.

Measure the Magnetic Field

By measuring the magnetic field, we can ensure the neodymium magnets meet the specified grade, strength, and quality standards. This helps us maintain consistency and reliability across different batches of magnets.

Measurement of Platings

Salt Spray Test

The coated or plated magnet is subjected to a controlled saltwater mist. The period of exposure and the appearance of corrosion are then utilized to evaluate the coating or plating’s corrosion resistance.

Salt spray test machine for magnets, used to evaluate corrosion resistance and durability under harsh environmental conditions.
iaDa using machines to test the plating thickness of magnets, ensuring quality and adherence to specifications in surface treatment.

Plating Thickness Test

We can guarantee that the plating thickness satisfies the specified criteria and offers enough protection and performance for the applications we want to use.

Drop Test

By performing a drop test to assess the adhesion of plating on a magnet, we can ensure that the coating is durable and well-suited for its intended application.

Drop test for magnets, assessing durability and resistance to impact by observing the effects of dropping from a specified height.

Temperature Resistance and Thermal Stability

Temperature Test

 Neodymium magnets can be sensitive to high temperatures, which may cause a loss of magnetic strength or even structural damage.

To test a magnet’s performance under various temperature conditions, place it in a temperature-controlled chamber and subject it to a range of temperatures above and below its maximum operating temperature. Measure the magnetic properties at each temperature level to evaluate the magnet’s performance and stability.

Conditional tester for evaluating the temperature resistance of magnets, designed to simulate extreme conditions and measure performance stability.

Magnetic Property Tests

B-H Curve

The B-H curve is a graphical representation of the relationship between the magnetic flux density (B) and the magnetic field strength (H) in a magnetic material.

We use it to inspect and characterize the magnetic properties of a magnet and provide valuable information about its performance under various magnetic field conditions.

B-H curve of an N35 magnet, graphically displaying its magnetic properties and performance characteristics under different conditions.
B-H curve of an N48SH magnet, illustrating its magnetic strength and hysteresis loop for high-temperature applications.
B-H curve of an N52 magnet, showing its magnetic properties and maximum energy product for performance analysis.
B-H curve of an N40UH magnet, highlighting its magnetic characteristics and ability to perform under elevated temperatures.
B-H curve of an N38EH magnet, demonstrating its magnetic properties and efficiency in extreme high-temperature environments.

Trusted By Strictest Standards

Certified Quality Excellence

Certifications demonstrate our commitment to producing high-quality magnets that meet the strictest performance and safety standards, providing our customers with reliable and durable magnetic solutions for their applications.

ISO 9001

Meet international quality management standards.

ISO 14001

The recognized standard for environmental management systems.

IATF 16949

Commitment to quality and efficiency in neodymium magnet manufacturing.

RoHS&REACH Compliance

Our neodymium magnets are safety and environmental sustainability

iaDa facility presenting the ISO45001 certification awarded in 2021, highlighting the company’s focus on occupational health and safety management.
JiaDa factory displaying the ISO14001 certification obtained in 2021, underscoring the company’s commitment to environmental management and sustainability.
JiaDa factory highlighting the ISO9001 certification achieved in 2016, demonstrating a long-standing dedication to quality management systems.
JiaDa facility showcasing the IATF16949 certification received in 2021, emphasizing the company’s commitment to quality and standards.

Quality Inspection Process Table

The table shows our detailed inspection procedure, to understand how we deliver top-quality parts on-time.

Processing Tools/Machines Inspection Purpose Disc Ring Block Arc Irregular
Sintered Blank Magets
Micrometer/Caliper
to check the size
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Sintered Blank Magets
Electromagnetic tester
demagnization curve analysis to check the performance of magnetic properties
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Machining Process
Micrometer
to check the size
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√
√
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Machining Process
Gauge
to check the size
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√
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Machining Process
Projector
to check the size
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√
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Machining Process
Human inspection
to check the appearance any defects
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√
√
√
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Finished Magnets
Thickness meter
to test the thickness of magnet surface electroplating
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Finished Magnets
Drop test
to test the adhesion of magnet surface electroplating
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√
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Finished Magnets
Salt spray tester
to test the corrosion resistance of magnet surface plating.
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√
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√
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Finished Magnets
Thermal shock test
Stability test of cold and heat resistant infusion
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√
√
√
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Finished Magnets
Pull test
to test the mechanics performance
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Finished Magnets
Gaussmeter
to measure strength and polarity of magnetic fields
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Finished Magnets
Fluxmeter
to measure the density of the magnetic field beam, with the unit of Wb
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Finished Magnets
Visual inspection machine
full inspection of magnet appearance, size, aperture, internal crack, or other defects.
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Finished Magnets
Human inspection
full inspection of magnet appearance, size, aperture, internal crack, or other defects.
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Finished Magnets
Visual inspection machine
Visual Inspection Machine: full inspection of magnet appearance, size, aperture, internal crack, or other defects.
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Finished Magnets
Micrometer/Gauge/Projector
Visual Inspection Machine: full inspection of magnet appearance, size, aperture, internal crack, or other defects.
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Finished Magnets
Conditional tester
to test temperature variation and humidity of magnets in a certain environment.
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Links
Factory Inspection Online
Calculator: Pull Force&Surface Field Strength
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