The length of the screw is to be compared to the time when the colour is changed, not only by reference to the size of the old piece or the device label, but also by understanding the true change in the material in the snail. At its core, longer currents mean greater exposure to areas and potential reserves, and structurally dead ends directly affect color change efficiency. Smooth and self-cleaning long screws can maintain a steady flow, while complex condensing structures may retain old colours. The long-range ratio is only a geometric entry, and what really determines is the effective length, distribution of the functional segments, actual production and material heat history. The selection programme should draw the boundary of production, temperature rise, twirl and time of stay before determining whether the parameter pushes the work to an uncontrolled area. Nominal specifications are therefore only the starting point, and the final conclusions must serve the actual resin, product and volume rhythm.

When customizing around the "relationship of the long-wire ratio of the screw to the colour-removing time", first collects the size of the equipment model, the original screw and the material drum, the driving power, the resin plate number and the filling system, the sum of the single simulator, the cycle and the existing defects. The specific selection principle for this topic is that frequent change-of-color production should incorporate the continuousness of the grooves, the dead end of the screw, the roughness of the surface and the method of washing. The same mass and the same cooling time should be used for the test to record the amount of plasticization and energy consumption at a low, medium and high three-stage rotation, respectively. The technical agreement should include quantifiable provisions for size benchmarks, key communications, material status and acceptance methods so that new, old and subsequent restorations can be compared under the same criteria.

The most important defence against the failure of the subject is that only the pursuit of amalgamation can lead to a darker colour and a continuous colour, and thermal sensitivity may also form a black spot in the area. When the size is still satisfactory and performance is abnormal, the same axiality, roughness of the surface, partial loss of coatings and thermal deformation are also examined and not only the outer diameter. For on-site processing, only one main variable is changed each time and the measurement time, twist, melting temperature, mat, injection pressure and product weight are aligned to the same pattern. If production is to be sustained by excessive temperature, turn speed or back pressure, the use of parameters to mask structures, wear or collage should be discontinued.

This replicable option can be used to verify the “relationship of the long-wire ratio of the screw to the colour-removing time”: to record the weight, time and stop-and-discretion position of the material in order to reach the colour deviation standard with fixed cleaning material and operating conditions. The results of the validation should be the denominator of the eligible products, while counting the time spent on energy consumption, cleaning, stoppage and maintenance, which is closer to real value than a separate comparison of the purchase price. Inquiries to suppliers should also be accompanied by information on resins and fillings, risk of flame retardation or corrosion, total weight of products and fluids, photographs of available screws and equipment curves. The programme is considered to have a stable engineering value when the detection data, the good product rate, the timing of the switch and the unit cost of the eligible goods are improved.