Quality Control

External Appearance Quality Control Range

Milling Face
  • EN 1.0038 equiv.
  • EN AW−5052 equiv.
  • EN 1.4301 equiv.
Untreated surface
  • EN 1.0038 equiv.
  • EN AW−5052 equiv.
  • EN 1.4301 equiv.
  • No hooks and a dot gauge guarantee of scratches of 0.7 mm or smaller.
  • Surface roughness: √Ra6.3 or 3.2 [√Rz25 or 12.5]
    The surface roughness value conforms to the value set by the user.
  • Depending on the material and size, the product may be shipped with an untreated surface (polishing and rolling).
Surface Treatment
Suspension method image Surface treatment suspension and electrode contact marks
Suspension method image Anodized aluminum (black) Anodized aluminum (white)
Anodized aluminum (black) Anodized aluminum(clear)
  • Since film thickness management is difficult for small diameter precision holes, etc., additional machining may be carried out after processing, and as a result, the surface treatment may not remain on the cutting surface.
  • Surface treatment suspension and electrode contact marks may remain on the product.
  • Suspension marks and electrode contact marks from surface treatment may remain on the product.
  • The color of the surface-treated product is not guaranteed.
  • The exact color spec cannot be specified using Munsell or RAL values.
  • Color may very, even among products with the same material and surface treatment.

Example of Red anodizing

Example of Gold anodizing

  • Please refer to the pictures on the left for the color of Red and Gold anodized products.

Inspection Item

Inspections are Carried Out at Each Work Stage and Before Shipment
Dimensional tolerance inspection
Using a micrometer
Fit tolerance inspection

Using a limit plug gauge
Geometric tolerance inspection
9733_01_deEN
Measurement method: Measure at multiple points using a dial gauge, feeler gauge, height gauge, etc. on a surface plate.
*Specifying the measurement method or providing an inspection certificate is not available.
Screw inspection, etc.

ISO2-grade (JIS B 2025) equivalent Bolts pass through in principle.

Appearance inspection
Inspection with roughness standard specimen,dot gauge,and roughness tester.

Dimensional Assurance Range

Corner chamfering
Corner chamfering Corner chamfering

For sharp corners (C0.5 mm and smaller), the external corner chamfer tolerance is C0.1 mm to 0.5 mm, and the internal corner radius tolerance is R0.5 mm or less.

Chamfering unspecified hole entrances
Corner chamfering Corner chamfering

Entrance chamfer is 0.1 to 0.5 mm or less.

Ensure the specified geometric tolerances

  • Specified values are guaranteed per 100 mm.
  • i.e., If a flatness of 0.05/100mm is specified
– The geometric tolerances for a 100 x 100 plot surface area is considered above

Quality inspection during engraving

Processing method

“Engraving is done either by “laser cutting” or “machining”.
*The processing method cannot be specified

Quality precautions for engraving

  • 1. There may be burrs or burns on the engraved area.
  • 2. If the font size is 3~5mm, depending on the characters, there may be insufficient space between the characters or the characters may be crushed.
  • 3. Depending on the material and surface treatment, the finish of the engraving may be lighter.
  • 4. The “font size and angle” on the engraving are approximate values. Dimensional accuracy is not guaranteed.
  • 5. Depending on the text content, the size may differ from the specified size.
  • 6. Depending on the total length of the engraving, discrepancies in character spacing and height may occur (guideline: length 90mm or more)

Example of engraved surface

No surface treatment

  • Laser engraving
  • （Material：EN 1.4301 equiv.）
  • Engraving by machine
  • （Material：EN 1.4301 equiv.）
With surface treatment
  • Laser engraving
  • （Material：EN AW−5052 equiv.）
  • *Black anodize
  • Engraving by machine
  • （Material：EN AW−5052 equiv.）
  • *Clear anodize

Quenching Quality Standards

About hardening quality assurance

The hardness value specified is guaranteed and will be measured and confirmed before shipping.

Material:EN 1.2379 equiv., Surface Treatment:Electroless nickel

Material:EN 1.1206 equiv., Surface Treatment:Electroless nickel

Finish without grinding

Material:EN 1.1206 equiv., Surface Treatment:Electroless nickel

Finish with grinding

Inspection marks

Caution

  • The hardened depth and distribution of heat treated areas may vary depending on the thickness and shape of the material.
  • When parts are heat treated, the outer surface tends to be harder, while the inner areas tend to remain softer. During inspection the hardening will be confirmed to be uniform on average.
  • The surface can be cleaned by sandblasting after hardening. The accuracy is not reduced by this process. The blasting method cannot be specified.
  • Grinding may be performed during the finishing process.
  • Grinding cannot be specified. Whether to grind is decided in the factory under the aspect of quality assurance.
  • Hardness measurement marks may remain in areas. To confirm the inspection points in advance, please add information in the comments and request a manual quote.

Packaging

Interior Exterior
Product packaging Simple 2D diagram Multiple Single
Individual packaging Multiple item packaging Small item packaging
Includes simple 2D diagrams 2 layers of bubble wrap around each side The product label will be affixed to the outside before sending. Sent in a box or bubble wrap bag.

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