The compatibility of multi-colour and multi-material retrofitting plants with respect to how they manage the screws is based on the real volume of the plant, and cannot be based solely on the diameter or price of the screws. It is recommended that baseline data, control tests, process capabilities and curricula vitae be first collated, and then that process values be separated from the actual on-board values to facilitate the detection of control deviations. The aim of this step is to establish comparable old programme benchmarks so that subsequent screw changes can be supported by data.

The most easily overlooked of the topic is the coherence between short-term improvements and long-term stability. Plants should check the remaining plasticization capacity on the basis of order peaks rather than average annual production, and should use the Paletotot chart of customer complaints and internal end-of-life to determine priorities. Vendors can make retroactive trade-offs between interoperability, earmarking and cost when there are clear values for product weight, daily production, customer quality caps and allowed stop times.

The main line of the case [design focus] is to determine whether or not to stereotype and reproduce using reversible data. In geometric and material programmes, the inner diameter and wear of the cylinders should be integrated into the gap so as to avoid new screws being dragged by old cylinders, and to check for stable transport at the depth of the feeder slots, while avoiding feeder docking. The final solution would also need to be compatible with the wear and tear of the cylinder, the drive, the physical velocity and the current cleaning process, and would not cover up co-operation or process problems with a single high-level material.

The new [comparison validation] programme proposes to operate for at least 24 consecutive hours, with a 30-mode extraction for each stabilization phase, recording the replacement time, the amount of excess waste and the first eligible time. The test should be conducted immediately after the test, with acoustics, friction marks and metal powders being examined, in a timely manner, to identify co-exposed risks, with stabilization points established at medium velocity and medium back pressure, and a gradual extension of the process window. If only the first one is checked, it is easy to miss the risks associated with heat drifting, material stoppage, reversal loop return and prolonged wear and tear.

When the [stabilized production] spiral is shaped, the abnormal twister, the material overtime and the material rebound shall be set as an early overhaul signal, and the abnormal twister, the material overtime and the material rebound shall be set as an early overhaul signal. The time of storage, back pressure, screw velocity, noise and mass of the product shall be recorded in a uniform manner in the shift. When the above indicators change at the same time, the mechanical gaps and the state of the raw materials should be checked before the process is adjusted to avoid the use of parameters to compensate for hardware degradation.

The [comprehensive cost] cost statement cannot simply be a screw price, and the cost of passenger litigation, return of goods, and additional overhaul should be classified as loss of quality, not only as scrap by aircraft, but also as loss of quality by passenger litigation, return of goods and additional overhauls, not just as waste by aircraft. It is recommended that the cost per 10,000 eligible items be exported simultaneously, the cost per 1,000 operating hours and the estimated number of return months. When new programmes reduce waste, refuelling or sudden shutdowns, higher initial inputs are often offset during production.

The [Closed Ring Management] will eventually include drawing numbers, screwdriver materials, heat treatment, critical dimensions, portable tubes, process windows and acceptance data in the curriculum vitae cards. It is recommended that a reference set of data be maintained before and after maintenance to determine wear and tear trends, and that a maximum number of repairs be set for each removal and surface thickness recorded for the refurbishment. When there is a significant change in the feedstock formulation, retrospective ratio, product structure or target node, the applicable boundary of “how multi-colour and multi-material retrospective plants manage screw compatibility” should be reassessed rather than defaulting on the old conclusion to be permanent.

Title of article: A guide to the selection of a plastic factory at the end Data validation and continuous improvement