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Casting problem -- Scaling on surface

September 19, 2024
Casting information
Casting information
2. Casting photographs
Casting photographsCasting photographs
3. Cast analysis 
Due to the structure and appearance requirements of the products, the design of the pouring system should give priority to meet the molding effect of the appearance of the A side, and the large wall thickness of the dynamic mold and the design arrangement if secondary filling are the main reasons leading to the peeling  
Explanation of appearance
4. Improvement 
Add an assistant flow channel to the side of fixed mold, and the flow angle of the flow channel is filled in the position of the wall thickness of the moving mold, so as to increace the flow rate, shorten the distance from the scaling position, and improve the surface dense layer in this area to achieve the purpose of improvement.
Improvement
5. Tips
About scaling:
Scaling factors are complicated, there are two factors in common: 1. the solidification rate caused by local high temperature near the gate of inconsistent, which will leading to scale, such scaling is thinner; 2. The filling end is scaling due to poor combination of air or cold material, and the skin of such scaling is thicker. 
 
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