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The second-hand injection molding machine is in the filling and holding pressure drop section, and the water pressure of the mold core increases with the passage of time. After filling the cavity, the water pressure will remain at a value that depends on the external situation to supplement the amount of glue formed by the shrinking. not enough.
To deal with defects of second-hand injection molding machine and avoid operation, it is necessary to master the elements of injection molding machine defects, accumulate materials and data of frequent defects and typical defects, open defect analysis, pay attention to defect rules and defect mechanisms, strengthen general maintenance and review And pre-repair.
Do a good job of publicity and education so that operators and maintenance personnel can consciously record, calculate and analyze the defects of second-hand injection molding machines, and make reasonable suggestions. The injection molding machine is closely integrated with the characteristics of the injection molding production practice and the injection molding machine. It is divided into three categories, A, B, and C, to determine the key points of defect processing. Select monitoring instruments for program monitoring of key components of the key injection molding machine, and timely detect signs of defects and deterioration information.
Generally speaking, second-hand injection molding machines are also frequently inspected, patrolled, inspected on time (including precision inspections), inspected for defect-free conditions, etc. The focus is on mastering the parts, organization and technical status of the parts. Prone to defects. Information about the exception. We must jointly develop observation specifications to determine the distance between normal, abnormal and defective injection molding machines.
The second-hand injection molding machine is in the filling and holding pressure drop section, and the water pressure of the mold core increases with the passage of time. After filling the cavity, the water pressure will remain at an external condition to supplement the amount of glue formed due to the shrink not enough.
The other is that the water pressure can avoid the backflow of the suspension caused by the reduction of injections. This is also the pressure holding link. After the pressure is held, the core water pressure will gradually drop, and the method can be reduced to zero with the elapse of time, but in detail It is not necessarily zero, so there will be thermal stress inside the crafts after the mold is produced, so some products need to undergo post-processing to eliminate residual shearing force.
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