The choice of chromium plating, nitrogenization and PVD surface treatment is based on the actual production scene of the plant and cannot be based solely on a spiral diameter or price. It is recommended that the filling content, corrosive media, temperature and operating hours be first collated, and that baselines be established for each of the three phases of start-up, stable production and refuelling. The aim of this step is to establish comparable old programme benchmarks so that subsequent screw changes can be supported by data.

The easiest to ignore is the rate of wear and tear, the growth of the gap and the sudden failure. Plants should first identify acceptable ceilings for quality defects, then discuss speed and energy consumption targets, and place red lines for quality and equipment loads at the same time for key products. 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 the selection of materials, thermal treatment and surface layer based on the wear and tear machine. In geometric and material programmes, the inner and worn state of the cylinders should be incorporated into the co-ordinated gap to avoid new screws being dragged by old cylinders; and the screw diameter, a valid itinerary and a single simulator mass should be calibrated to prevent long stops. 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. Tests 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 only one factor to be changed at each time and an empty run phase to restore baseline conditions. 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.

Once the [stabilized production] spiral is shaped, a metallic isomer separation and magnetic inhalation system should be established, and post-accuracy prune damage should be checked, and screw head components or spare parts should be prepared for key platforms, and the availability should be periodically reviewed. 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 cost statement [comprehensive cost] cannot simply be a screw price, but the planned stoppage should be charged separately from the unplanned stoppage, which should also include the loss of late delivery, and the unplanned stoppage, which should also include the loss of late delivery. 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 proposed to set early warning limits for the various hot zones and driving loads of the cylinders, instead of looking at averages only, and to prepare screw-head components or spare parts for key platforms and to periodically review the availability. The applicable boundary of chromium plating, nitrogenization and PVD surface treatment should be re-evaluated when there is a significant change in the feedstock formulation, feed ratio, product structure or target node, rather than defaulting on the old conclusion being permanently valid.

Title of article: A guide to the selection of a plastic factory at the end