No shot full (lack of material)
1. Injection pressure is insufficient;
2. insufficient-pressure protection;
3. inadequate injection time;
4. feed (accumulator) is inadequate;
5. radio material staging location is too small;
6. exit end position is too small;
7 injection speed not fast enough;
8 tube nozzle temperature is not enough;
9 mold temperature is not enough; insufficient raw material drying temperature, time 10
11 injection molding cycle is too fast, inadequate warm-up;
12 uneven mixing of raw materials; (backpressure lack of speed is not enough)
13. lack of liquidity of raw materials; (product too thin wall)
14. Mold venting is inadequate;
15. Die feed uneven;
16. cold well poorly designed;
17. cold discharge port is too small, direction is unreasonable;
18 mold cavity plastic flow is unreasonable;
19 mold cooling uneven;
20 injection oil road inaccurate，not fast enough;
21 electric system instability, imprecise;
22 nozzle leakage of material, there are foreign body stuck;
23. screw feed tube wall wear, poor cooperation;
2. insufficient-pressure protection;
3. inadequate injection time;
4. feed (accumulator) is inadequate;
5. radio material staging location is too small;
6. exit end position is too small;
7 injection speed not fast enough;
8 tube nozzle temperature is not enough;
9 mold temperature is not enough; insufficient raw material drying temperature, time 10
11 injection molding cycle is too fast, inadequate warm-up;
12 uneven mixing of raw materials; (backpressure lack of speed is not enough)
13. lack of liquidity of raw materials; (product too thin wall)
14. Mold venting is inadequate;
15. Die feed uneven;
16. cold well poorly designed;
17. cold discharge port is too small, direction is unreasonable;
18 mold cavity plastic flow is unreasonable;
19 mold cooling uneven;
20 injection oil road inaccurate，not fast enough;
21 electric system instability, imprecise;
22 nozzle leakage of material, there are foreign body stuck;
23. screw feed tube wall wear, poor cooperation;
2. flash (flash)
1. Injection pressure and too much
pressure;
2. insufficient clamping at high pressure;
3. backpressure too;
4. injection and dwell time is too long;
5 accumulator and cooling time delay is too long;
6 down too long. Not fired thermal material;
7 injection pressure dwell too fast;
8 screw speed is too fast, the plastic shear, friction overheating;
9. casting tube temperature is too high;..
10，cavity mold temperature is too high uneven cooling;
11 injection stroke debugging unreasonable;
12 hold pressure switching point, injection end too;
13 mold assembly combination imprecise;
14 clamping a foreign body, inadequate transfer mode position;
15. Clamping not ﹑ precise parallel;
16 inadequate lubrication thimble ﹑ maintenance;
17. Slider， angle pin press-fitted in place;
18 cavity inserts not press into place, stays out of the mold surface;
19 inlet design reasonable uneven distribution ;
20 product design lead to somewhere at the end of the inner wall is too thin and too far;
21 unreasonably small inserts combinations, deformation prone;
22 inserts for wear due to production ﹑ ﹑ deformation fillet;
23 inserts No design stability ﹑ not hold together, reinforcement; 24. exhaust groove deep cavity;
2. insufficient clamping at high pressure;
3. backpressure too;
4. injection and dwell time is too long;
5 accumulator and cooling time delay is too long;
6 down too long. Not fired thermal material;
7 injection pressure dwell too fast;
8 screw speed is too fast, the plastic shear, friction overheating;
9. casting tube temperature is too high;..
10，cavity mold temperature is too high uneven cooling;
11 injection stroke debugging unreasonable;
12 hold pressure switching point, injection end too;
13 mold assembly combination imprecise;
14 clamping a foreign body, inadequate transfer mode position;
15. Clamping not ﹑ precise parallel;
16 inadequate lubrication thimble ﹑ maintenance;
17. Slider， angle pin press-fitted in place;
18 cavity inserts not press into place, stays out of the mold surface;
19 inlet design reasonable uneven distribution ;
20 product design lead to somewhere at the end of the inner wall is too thin and too far;
21 unreasonably small inserts combinations, deformation prone;
22 inserts for wear due to production ﹑ ﹑ deformation fillet;
23 inserts No design stability ﹑ not hold together, reinforcement; 24. exhaust groove deep cavity;
3. bubbles (gas sores)
1. Paul insufficient pressure injection pressure;
2. raw material solid enough back pressure is too small;
3. injection speed too fast;
4. Storing too fast;
5. tube temperature is too high, mold temperature is too low;
6. material drying temperature, time shortage;
7 shot back too much;
8. The injection cycle is too long; (warm-up time increases) is less than
9. feeding position, injection end is too small;
10. Front retracted position after the song is too long;
11. The machine hydraulic instability;
12. tube screw compression ratio is not enough;
13 under ﹑ uneven mixing raw materials;
14. tube reflux, are dead; 15 die inlet is too small mold cavity flow not fast enough; 16. cold material improper well design, cold material into the mold cavity;
17 improper cooling mold, mold core temperature is too high; the inner wall
18. The design is too thick, uneven internal stress; improper feed additives
19, easy. Decomposition precipitation;
2. raw material solid enough back pressure is too small;
3. injection speed too fast;
4. Storing too fast;
5. tube temperature is too high, mold temperature is too low;
6. material drying temperature, time shortage;
7 shot back too much;
8. The injection cycle is too long; (warm-up time increases) is less than
9. feeding position, injection end is too small;
10. Front retracted position after the song is too long;
11. The machine hydraulic instability;
12. tube screw compression ratio is not enough;
13 under ﹑ uneven mixing raw materials;
14. tube reflux, are dead; 15 die inlet is too small mold cavity flow not fast enough; 16. cold material improper well design, cold material into the mold cavity;
17 improper cooling mold, mold core temperature is too high; the inner wall
18. The design is too thick, uneven internal stress; improper feed additives
19, easy. Decomposition precipitation;
The crazing (rhyolitic)
1. Injection pressure is too small;
2. dwell too much pressure;
3 back pressure too;
4. injection speed is too slow, too fast packing;
5 mold temperature material temperature is not high enough;
6 injection ﹑ dwell too long;
7 injection stroke debugging improper ﹑ hold pressure switching points too;
8 drying materials is not too much water;
9. poor material flow, the viscosity is too high;
10 injection molding machine is not fast enough precision;
11 die inlet is too big or too small;
12 secondary runner sprue size is not big enough;
13 the flow direction of the mold cavity is unreasonable;
14. mold surface irregularities with oil;
2. dwell too much pressure;
3 back pressure too;
4. injection speed is too slow, too fast packing;
5 mold temperature material temperature is not high enough;
6 injection ﹑ dwell too long;
7 injection stroke debugging improper ﹑ hold pressure switching points too;
8 drying materials is not too much water;
9. poor material flow, the viscosity is too high;
10 injection molding machine is not fast enough precision;
11 die inlet is too big or too small;
12 secondary runner sprue size is not big enough;
13 the flow direction of the mold cavity is unreasonable;
14. mold surface irregularities with oil;
5. Pack the wind (burns. Coke)
1. Injection pressure too fast;
2. backpressure too;
3. screw feeder too fast;
4 cylinder temperature is too high;
5 cycle time is too long or too fast;
6. Front song retracted position too;
7 materials is not drying;
8. feedstock good liquidity, too much time feeding than or dust;
9. additive unstable, decompose precipitation;
10 mold venting groove deep enough ﹑ wide follow-up row gas shortage;
11 runner ﹑ feed uneven;
12 die with tight clamping force is too large;
13 die dirty vents blocked by oil halogen scale;
14 mold design and processing methods are not reasonable overall cavity too;
15 injection molding machine precision temperature control is not stable;
16. tube countercurrent or dead inside;
17 nozzle leakage of material and filling the mouth with insufficient;
18. screw head (split spindle) is not Reasonable or broken;
19 inlet is too small, the flow of complex mold cavity;
2. backpressure too;
3. screw feeder too fast;
4 cylinder temperature is too high;
5 cycle time is too long or too fast;
6. Front song retracted position too;
7 materials is not drying;
8. feedstock good liquidity, too much time feeding than or dust;
9. additive unstable, decompose precipitation;
10 mold venting groove deep enough ﹑ wide follow-up row gas shortage;
11 runner ﹑ feed uneven;
12 die with tight clamping force is too large;
13 die dirty vents blocked by oil halogen scale;
14 mold design and processing methods are not reasonable overall cavity too;
15 injection molding machine precision temperature control is not stable;
16. tube countercurrent or dead inside;
17 nozzle leakage of material and filling the mouth with insufficient;
18. screw head (split spindle) is not Reasonable or broken;
19 inlet is too small, the flow of complex mold cavity;
6. brittle plastic body
1. Paul insufficient injection pressure;
2. raw material solid enough back pressure is too small;
3. the back pressure is too large, cut friction heat rises;
4. firing rate is too slow, not fully crystallized;
5. mold temperature is too high, Decomposition raw excesses deterioration;
6. The mold temperature is too low, not fully crystallized;
7. Paul insufficient pressure injection time;
8. downtime and cycle time is too long;
9 material storage time is too long;
10. The second charge was added too much or too much dust;
11. raw strength and toughness is not enough, not enough viscosity;
12. additives unreasonable, or add too much;
13 materials is not fully dried; uneven mold cavity
14. The structure of the junction too far ;
15 Die feed uneven, cold material well enough;
16. The inner wall is too thin product design, no radiation help strengthen;
17 injection molding machine precision temperature instability;
18. tube countercurrent or dead inside;
19 The top of the unreasonable, plastic body stress increases, resulting in rupture;
20 improper handling post-cooling plastic body, easy to crack
2. raw material solid enough back pressure is too small;
3. the back pressure is too large, cut friction heat rises;
4. firing rate is too slow, not fully crystallized;
5. mold temperature is too high, Decomposition raw excesses deterioration;
6. The mold temperature is too low, not fully crystallized;
7. Paul insufficient pressure injection time;
8. downtime and cycle time is too long;
9 material storage time is too long;
10. The second charge was added too much or too much dust;
11. raw strength and toughness is not enough, not enough viscosity;
12. additives unreasonable, or add too much;
13 materials is not fully dried; uneven mold cavity
14. The structure of the junction too far ;
15 Die feed uneven, cold material well enough;
16. The inner wall is too thin product design, no radiation help strengthen;
17 injection molding machine precision temperature instability;
18. tube countercurrent or dead inside;
19 The top of the unreasonable, plastic body stress increases, resulting in rupture;
20 improper handling post-cooling plastic body, easy to crack
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