English
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Español| Question | Causes | Solution |
| Mucosal
(Material sticks to the mold surface, resulting products of local roughness) |
1. Mold surface finish is not good
2. Material shrinkage is too large or too small 3. Pressure is too high 4. Not parallel to the top of the bar die |
1. Increase in mold finish
2. Shrinkage of improved materials 3. Appropriate to reduce the molding pressure 4. Check the top of the pole is balanced |
|
Material shortage, stomatal (Less filling, the product or the injection port in the corner opposite the existence of pores) |
1. Pressure is insufficient
2. Inadequate exhaust 3. Mold temperature too high or too low 4. Insufficient material 5. Pressed too fast or too slow |
1. Appropriate increase in pressure
2. Increase in the number of exhaust 3. Adjust mold temperature 4. Increase in material 5. Adjust the speed of mold |
|
Warpage (Product after the bending modulus and deformation of the phenomenon is not flat) |
1. Holding time is too short, assimilation is not fully
2. Material shrinkage is too large 3. Mold temperature too high 4. After a model amorphous |
1. Increase the holding time
2. Change the material shrinkage 3. Adjust mold temperature 4. Products will be setting out the model to the temperature drop |
|
Carbonization (Not the exhaust gas in the combustion product corner, etc., so that the area becomes black) |
1. Memory in the dead mold
2. Inadequate exhaust 3. Mold temperature too high |
1. Improved exhaust mold
2. Increase in the number of exhaust 3. Reduce the mold temperature |
|
Cracking (Product surface cracks) |
1. Inadequate curing, the mold temperature does not
2. Material shrinkage is too large 3. The top of the peak of the staff out of balance 4. Insert inappropriate temperature 5. Mold surface is not smooth |
1. Increase the curing time, adjusting the mold temperature.
2. Adjust the material’s shrinkage rate 3. Check the top of the mold is parallel to the rod 4. Insert the appropriate warm-up 5. Increase the mold surface finish |
|
Bubble (Convex surface of the product after ejection) |
1. Mold temperature is too low, inadequate curing
2. Materials, there are water 3. Mold temperature too high |
1. Increase mold temperature, increasing the curing time
2. Check the moisture content of raw materials 3. Reduce the temperature of the mold |
|
White Point (The number of products, ranging from the surface of white) |
1. Die progress is too slow
2. Mold temperature is too high, into the material has been pre-Curing 3. Put too much air time and frequency |
1. Die quickly after feeding
2. Reduce the mold temperature 3. Quickly after clamping the exhaust and reduce exhaust the number of |
|
Seams (Mouth or injection molding products in the opposite corner there at the seams with) |
1. Mold temperature too high or too low
2. Too fast or too slow mold 3. Insufficient curing |
1. Adjust mold temperature
2. Die speed up or slow down 3. Increase the curing time |
If you have any question on SMC molding, you can contact Shine to get the answer.
Taizhou Huangyan Aoxu Mould Technology Co., Ltd
Email: [email protected]
Phone: +86 157 5766 8880
