10
2022
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01
Attention should be paid to the casting mold trial
The mold should be baked as specified during the production process, and the material in the barrel should be correct.
What should be paid attention to when testing the casting mold?
The mold should be baked as specified during the production process, and the material in the barrel should be correct. In order to prevent defective products or debris from being injected into the mold, and defective products and debris may block the mold, the material pipe should be thoroughly cleaned.
The temperature of the material tube and mold should be suitable for the raw materials being processed. If a more satisfactory product is to be produced, the pressure and injection volume should be adjusted. It should be noted that during production, it is impossible to deburr, and it is even difficult to deburr when some cavity products are not fully cured.
Slight changes in mold fill rates are likely to cause changes in mold fill rates, so this should be considered before adjusting various control conditions.
In order to reduce the cycle time of the entire treatment, reasonable adjustments should be made. In order not to reduce the weight of the product and damage the performance of the product, the advance time of the screw cannot be shorter than the curing time of the gate plastic. In order to better compact the product, it is also necessary to extend the advance time of the screw when heating the mold.
During production, do not rush to output, but wait patiently for the state of the machine and mold to stabilize. This is an essential part of measuring and recording continuous samples. When the sample is cooled to approximately room temperature, its important dimensions should be measured.
In order to test the stability of the actual operation and obtain reasonable control tolerances, at least twelve full mold samples should be continuously produced, dated and numbered on the container, and placed separately according to the mold cavity.
Indicates that processing conditions are still changing, product dimensions are indeed unstable, and some dimensions have a tendency to increase or decrease. Should be attributed to poor temperature control or oil pressure control; dimensional changes may not be within tolerances.
If the size of the product does not change and the processing conditions are normal, it is possible to observe whether the quality of the product in each cavity is acceptable and whether its size can be within the allowable tolerance range; measure the number of consecutive molds greater than or less than the average and note the number of holes number to check the accuracy of the mold size.
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