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Metal Flow

Definition: Metal flow is caused by excessive temperature of the die and zinc. This condition will typically be in the same general area until process or spray adjustments are made. It is caused by difference in die tempe

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Burnout

Definition: Burnout is caused by cavitations of the metal during cavity fill causing die erosion. This condition will be in the same location every time until it is polished (removed) from the die. If it is not polished a

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Spray Blisters

Definition: Spray blisters are caused by trapped gases due to excessive spray. This condition will typically be in the same location every time until spray adjustments are made. Appearance: Positive on the part.

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Gas Blister

Definition: Gas blisters are caused by trapped gases below the surface. This condition will stay the same or worsen until the vacuum, machine or process adjustments are made. Appearance: Positive on the part.

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Heat

Definition: Heat is caused when zinc or die are too hot during cavity fill. This condition will remain the same until the zinc or die temperature are reduced. Appearance: Negative on the part.

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Cold

Definition: Cold is caused when zinc or die are too cold during cavity fill or spray or water drip. This condition will remain the same until the zinc or die reaches the operating temperature. Appearance: Overlapping/lami

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Build Up

Definition: Build up is caused when spray deposits build up on the die during the run. This condition will typically be in the same location every time until it is polished (removed) from the die. If it is not polished an

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Solder

Definition: Solder is caused when zinc builds up on the die during the run. This condition will be in the same location every time until it is polished (removed) from the die. If it is not polished and process adjustments

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Slugs

Definition: Slug is caused when a part is trimmed with debris on the trim steel, trim post or part. This condition will typically stay in the same area until trim die is cleaned. Appearance: Negative or positive on the pa

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Break Out

Definition: Breakout is caused during the trim operation, where too much material is removed. This condition will be in the same area until trim steels are adjusted. Appearance: Negative on the part.

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