Inferior Mold Releasing 模具開啟不良 Improper Ejection 頂出機構不合理 Uneven Cooling, Insufficient Cooling 冷卻不穩定,不充分 Mold Temperature Too High 模具溫度太高 Improper Annealing 退火不當
Injection Pressure Too High 注射壓力太高 Injection Holding Pressure Too High 保壓壓力太高 Holding Pressure Time Too Long 保壓時間太長 Resin Temperature Too High 注射溫度太高 Slow Injection Speed 注射速度太慢
常見啤塑缺陷及原因分析
COMMON INJECTION DEFECTS AND THE REASON ANALYSIS
Sink Flashing Phenomena Marks Inferior Sample 不良樣本 現象
Molding Machine, Molding Condition 啤塑條件
Excessively High or Uneven Mold Temperature 模具溫度過高或不穩定 Small Gate 水口偏小 Existence of Resistance Due to Narrow Runner and Sprue 流道,分流道狹窄而引起的阻力 Thick Section is Provided in the Cavity 收縮處截面偏厚 High Resin Shrinkage Ratio 村料收縮率高
夾水紋 Void Poor Weld Lines
凹孔
Resin Temperature Too Low and Lack of Fluidity 料溫太低,流動性差 Low Injection Pressure 啤塑壓力低 Slow Injection Speed 注塑速度慢 Cold Nozzle 噴嘴溫度低
Molded Products Adhere to the Mold Due to Insufficient Cooling 冷卻不充分引起啤件粘模 Mold Temperature Too High 模具溫度太高 Nozzle Hole is Larger Than Sprue Hole 噴嘴孔比流道孔大 Excessively Small Sprue and Taper Section, Inferior Finish 流道及脫模斜度不足,表面光潔度低 Improper Ejection 水口尺寸不當 Excessively Small R in Mold Cavity, Lack of Taper, Inferior Finish 模具溫度低
Mold, Material 模具,材料 模具 材料
披鋒
披鋒
High Injection Pressure 啤塑壓力高 Lack of Clamping Force 鎖模力不足 Excessive Supply of Molding Material 熔料過多 High Resin Temperature 料溫過高 Long Holding Time of Injection Pressure 保壓時間太短
Inferior Gate Position 水口位置不當 Inferior Gate Size 水口尺寸不當 Excessively Thick Molded Products 啤件太厚 Low Mold Temperature 模具溫度太低
縮水
縮水
Low Injection Pressure 啤塑壓力偏低 Short Holding time of Injection Pressure 保壓時間太短 Slow Injection Speed 啤塑時間太慢 Small Supply Amount of Molding Materials 熔料不足 High Resin Temperature 熔料溫度高
No Mold Align or Lack of Contact of Parting Surface 模具不對中或分型面接 Excessively Large Projected Area of Mold Cavity 型腔投影面積太大 Low Resin Viscosity During Molding 啤塑期間溶料粘度低
黑條紋, 燒焦
Resin Partially Overheated Due to Residue in the Cylinder and Others 由于料筒或其他部件中的殘余膠料 ,使膠料局部過熱 Inferior Nozzle Attachment 噴嘴在料筒中持續時間長 High Injection Speed 啤塑速度高 Long Holding Time of Materials 膠料在料筒中持續時間長 High Cylinder Temperature and Injection Pressure 料筒溫度過高,啤塑壓力太高
Grease and Oil Adhering to Mold Cavity 水口太寬 Overheated and Resolved Resin Due to Friction at the Gate Section 由于在水口處摩摩擦引起膠料達 Inferior Exhaust 排氣不良 Excessive Solvent 色粉過多
Inferior venting 排氣不良 Inferior Cavity Design (Thick Sections and Drastic Thickness Changes) 型腔設計不合理(壁太厚及壁厚突變) Improper Gate Position 水口位置不合理 Excessively Small Gate, Runner and Sprue 水口,流道,分流道過小 High Material Shrinkage Ratio 膠料收縮率太高
Mold Temperature Too Low 模具溫度太低 Improper Mold Cooling 模具冷卻不合理 Resin Does Not Flow Well 熔料流動性差
Phenome na oudy, 現象 Appeara nce 色澤陰暗
Inferior Sample 不良樣本
Excessively High or Excessively Low Mold Temperature 過高或過低的模具溫度 Excessively Small Gate, Runner and Sprue 過小的水口,流道,分流道 Water and Oil Adhering to Mold Surface 模具表面粘有水和油 Insufficient Resin Drying 膠料干燥不充分 Volatile Amount of Lubricant for Resin 膠料潤滑濟易揮發
Molding Condition 啤塑條件
Machine,
Molding
Mold, Material 模具,材料 模具 材料
色澤陰暗
Uneven Melting of Partially Overheated Resin 料溫太低,流動性差 Cold Nozzle 噴嘴溫度低 Excessively High or low Injection Speed 過高或過低的注射速度 Overheated Resolution of Resin 熔度過熱分解
粘模
IN S E R T C O D E
Injection Pressure Too High 注射壓力太高 Injection Holding Pressure Too High 保壓壓力太高 Holding Pressure Time Too Long 保壓時間太長 Excessive Material Supply 膠料過多 Resin Temperature Too High and Excessive Fluidity 膠料溫度太高,流動性太大
Excessively Wide Gate 水口太寬 Mold Temperature Too Low 模具溫度太低 Inferior Adhering of Parts 熔接不良 Inferior Cavity Design 型腔設計不合理 Improper Annealing 退火不當
拗曲
拗曲
Low Mold Temperature 模具溫度低 Lack of venting 排氣不良 Incorrect Gate placement 水口位置不當 Inferior Cavity Design 模腔干燥不合理 Insufficient Resin Drying 膠料干燥不充分
flow Marks 流動紋/ 走水紋
凹孔
夾水紋
Low Injection pressure 注射壓力低 Lack of Injection Holding Pressure 保壓壓力不足 Excessively High of Low Injection Speed 注射溫度過高或過低 Short Holding Time 保壓時間短
Silver Streaks and Spray marks 銀紋,料 花
銀紋, 料花
Inferior Plasticizing 塑化不良 Resin is Overheated and Resolved 熔料過熱分解 Excessively High Injection Speed 啤塑壓力過高,啤塑速度太快 Excessively High Injection Pressure and Injection Speed is Too Fast 啤塑壓力過高,蜱塑速度太快 Air Inside Screw (Lack of Back Pressure and Compression) 啤塑螺杆中有空氣
流動紋
Temperature Too Low and Lack of Fluidity 溫度太低,流動性差 Slow Injection Speed 啤塑速度 Excessively Small Nozzle 噴嘴過小 Injection Holding Pressure Too Low 保壓壓力太低