Tag Archives: mold texture

Welding

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How to Operate the Welding Process for Mold Texturing Successfully?

Welding Mark

Example: Improper welding causes visible marks after VDI 3400 etching.

Standard Welding Procedure:

A. Pre-heat: Thoroughly pre-heat the mold prior to any welding operation to minimize thermal stress.

B. Material Matching: Always weld the mold using a welding rod made of the same steel as the parent metal (base material).

C. Heat Treatment: Post-weld heat-treat the entire mold to ensure uniform temperature and consistent material hardness.

Warning: Improper welding technique or mismatched welding rods will result in “Welding Marks” or “Ghosting” after chemical etching or laser texturing. Ensuring the same steel chemistry is vital for texture consistency.

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Marked Parts

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Marked parts A
Marked parts B

The Mold Texturing Pre-Meeting

A Mold Texturing Meeting to review marked parts is one of the most important preparation steps. Generally, this meeting requires active discussion between the Texture Factory, Toolmaker, and the Customer.

Key Technical Points to Mark:

  • Grain Boundaries: Clearly defined areas where the texture starts and stops.
  • Draft Angle: Verification of sufficient angles for the chosen grain.
  • Reduce Depth Areas: Identifying where texture depth must be gradually reduced.
  • Sample Sets: At least 2 sets of marked samples should be prepared (one for the texture factory and one for the toolmaker) for reference and confirmation.

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