2015年4月29日星期三

How should prevent streaks injection mold defects

Injection mold stripe defects occur is very serious matter, mild damage the injection mold, serious will completely scrapped. Correct injection mold design, meticulous processing, reasonable repair mode, timely nitride is a key measure to prevent tissue streak defects.
      The mold should be strictly in accordance with the drawings request processing, with particular attention to improving surface finish and mold bridge shunt hole was dripping shape, improving the state of solid metal flow, reduce friction heat;
      For organizations fringes generated when the injection mold extrusion, mold repair work should go to the scene to understand the injection mold the material circumstances, to determine the correct repair mode programs; mold repair work personally observe the instantaneous state of the material profiles observed profiles than the material feed up determine the effect of the program is much better repair mode;
      Injection mold according to regulations in a timely manner nitride, ensuring a reasonable flow of state of solid metal.

      Correct injection mold design, rational distribution of the vent hole, reasonably determine the length of the work zone, and the change in length of the transition, the bridge dripping mold shape, reasonable welding angle, so that the weld point falls flat on welding chamber, to ensure the mold core When head stiffness, strength and deepen the depth of welding chamber or expanded welding chamber of basal area, if necessary, the use of "Shen Bridge", is the basis of organizational measures to prevent streaks defects.

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