Quality Control Lab Test

Fabmann supplies a wide range of copper products, and each product category requires different test and quality control processes. Our product portfolio covers following products:

1. Waveguide tubing
2. Hollow conductor (copper & copper alloy, stainless steel, aluminum)
3. Busbar, both copper busbar and copper clad aluminum busbar
4. Finned copper tube
5. Custom copper alloy profiles
6. Capillary copper tube
7. Inner grooved copper tube
8. Copper & copper alloy (Beryllium & Zirconium wire, bar & coil)
9. Rotor bar
10. Copper sputtering target
11. Magnets
12. Generator vent spacer

To ensure consistent delivery, Fabmann needs to perform strict tests for each batch of production. For instance, winding wires have gone through many tests because they are used in transformers, high-speed rail transit traction transformers, wind power generation, special large motors, electrical appliances and electric vehicles, superconducting wires and other fields. To deliver qualified hollow conductor with insulation, Fabmann team performs quality control for the winding wires based upon EN60851 covering following aspects:

√ Dimension
√ Inner tube roughness
√ 100% online eddy current test
√ Abrasion resistance
√ Chemical resistance
√ High dielectric strength
√ High temperature resistance
√ Mechanical stability
√ Solderability
√ Resistant to refrigerants
√ Hydrolysis resistance

Fabmann has professional lab test engineers who are experienced in testing magnets, and the test requirements are listed below:

√ Pole air gap
√ Magnetic pole parallelism
√ Dimensions from core base to magnetic center
√ Parallelism between core base and lower pole surface
√ Alignment (Upper and lower magnetic poles misaligned position)
√ Overall appearance inspection
√ Coil installation dimensions
√ Coil withstand voltage test (to-ground)
√ Circuit resistance detection
√ Laser alignment
√ Three-coordinate detection
√ Water flow test
√ Swagelok inspection
√ Temperature control check
√ Magnetic measurement

Quality Assurance

Electromagnet testing is a critical control process to verify whether its function meets the original design. Since the production involves more than ten different production solutions, and the relevant testing is required to verify whether each production process is qualified. We all know that the quality of an electromagnet is judged by its magnetic strength, performance and durability, and meanwhile, appearance, coil quality, and electrical performance of the electromagnet are also important factors in measuring its quality. A good electromagnet should withstand extensive test load, and it will not be prone to magnetic decay or performance degradation, and the durability of the electromagnet can be predicted by examining the material composition and manufacturing process of the electromagnet. In addition, the core and coil are important components, and therefore thorough check on core and coil is critical part of evaluation of electromagnet quality.

To verify the production quality, Fabmann will go through over 15 different testing parameters for each custom made electromagnet, and below is the summary of what tests are carried out before delivery: