OEM Hot Runner Typical Injection Molding Defects Analysis And Solutions
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The Cause And Countermeasure Of Product Leaving Marks
Current Ripple
When the material in the mold is solidified and the molten material after the flow is mixed, such as Mi is not fully integrated, there will be dim and scaly in the product. Iridescent or ring shaped, this phenomenon is the flow mark, usually occurs at a slow speed
| Cause | Cuntermeasure | |
| Forming condition | 1. The material overflow degree is too low, and the front section is very easy to cure 2. Mold temperature is too low 3. The speed of chaos molding is too fast or too slow, which will produce ripple flow marks when it is too slow and jagged flow marks when it is too fast 4. The filling pressure or holding pressure is too low, so that the flow mark is clear show | 1. Increase the molding temperature 2. Increase die temperature 3. Set the right speed 4. Increase filling and retaining pressure |
| Die | 1. The gate is too small 2. No cold feed well 3. Improper pouring U position | 1.F pour n 2. Open more cold feed Wells. 3. If pouring U is not fixed, the material will also touch the position of trapping mold hole wall |
| Product Design | 1. Product structure design makes more right angles 2. The product is broken and the thickness difference is too large | 1. Improve product shape and smooth molten material flow 2. Change the design to make the thickness too smooth |
| Material | 1. Poor liquidity of materials 2. Too much filler | 1. Improve liquidity 2. Switch to materials with fewer fillers |
| Other | Blockage of suona on injection molding machine | Clean the nozzle of the machine |
OEM Hot Runner Typical Injection Molding Defects Analysis And Solutions
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