Introduction
Surface finish (Ra) is one of the most important quality indicators in mold manufacturing. It directly affects product appearance, demolding performance, and functional stability.
Knowledge
Introduction
Surface finish (Ra) is one of the most important quality indicators in mold manufacturing. It directly affects product appearance, demolding performance, and functional stability.
Knowledge
What Is Ra (Surface Roughness)?
Ra refers to the average roughness of a machined surface, measured in micrometers (μm).
Knowledge
Common Ra Levels in Mold Industry
Knowledge
Ra 0.8 – Industrial Grade
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Structural parts
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Non-visible components
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Ra 0.4 – Functional Grade
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Mechanical components
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Ra 0.2 – High Precision Grade
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Medical parts
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Transparent components
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Ra 0.05 – Optical Grade
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Lens molds
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Why Surface Finish Matters
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Flow marks
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Poor demolding
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Visual defects
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How Surface Finish Is Achieved
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Precision grinding
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EDM polishing
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Conclusion
Surface finish is a direct reflection of mold manufacturing quality and application level.
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FAQ
Common questions about electronics CNC machining.
What is Surface Finish Ra Meaning in Mold Industry?
Surface finish (Ra) is one of the most important quality indicators in mold manufacturing. It directly affects product appearance, demolding performance, and functional stability.
Which CNC machines are commonly used for this topic?
HYR vertical machining centers, gantry machining centers and 5 axis machining centers are selected according to mold size, material hardness, tolerance and surface finish requirements.
How does this topic connect to mold manufacturing?
It supports the mold manufacturing process by improving precision, stability, surface quality, cycle time or long-term production reliability.
Application Proof
Related knowledge hub and case study.
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