Quality Control Thorough quality assurance that
enhances reliability and security

01

We guarantee surface flaw products according to the required quality level.

"We perform eddy current inspections on our shaft products as necessary to guarantee against flaws on product surfaces for up to 0.1 mm in depth. Also, in order to meet more demanding reguirements, we add a polishing process for further guarantee against flaws."

We guarantee surface flaw products according to the required quality level.
02

We do not overlook defects inside steel products to supply products that provide security to our customers.

Steel products containing lead may have defects inside such as inclusions even though there are no flaws on the surface.
We perform ultrasonic inspections as necessary to detect internal defects for up to 0.5 mm.

We do not overlook defects inside steel products to supply products that provide security to our customers.
03

We control invisible quality for decarburization, carburizing, microstructure, etc.

Decarburization, carburizing and microstructure, which change due to heat treatment, greatly affect the characteristics of materials.
Therefore, we have introduced the latest microscopes and perform daily quality and level control.

We control invisible quality for decarburization, carburizing, microstructure, etc.
04

We supply reliable products that meet the demanding standards of the automobile industry.

High-level products in all respects, including defects and dimensions, are required for wires and shafts used in the automobile industry. For example, since even a few small scratches can cause problems to battery parts in hybrid vehicles, special control is needed. Kyodo Shaft supplies many products with high quality standards such as precision equipment parts.

We supply reliable products that meet the demanding standards of the automobile industry.

List of facilities

  • Eddy current flaw detector
    Eddy current flaw detector 2units
  • Ultrasonic flaw detector
    Ultrasonic flaw detector 2units
  • Die imeage dimension measuring instrument
    Die imeage dimension measuring instrument 1units
  • Die management room
    Die management room
  • Microscope
    Microscope 1units
  • Micro Vickers (hardness tester)
    Micro Vickers (hardness tester) 1units
  • Metallurgical microscope
    Metallurgical microscope 1units
  • Hardness inspection machine
    Hardness inspection machine 4units
  • Magnetic particle flaw detector
    Magnetic particle flaw detector 1units
  • Universal testing machine
    Universal testing machine 2units