[Scene definition] How to calculate the cost of a switch, test model and certification in a screw retrofit would have to start from the real volume scene of the plant, not just the diameter of the screw or the price. It is recommended that the purchase price, waste, energy consumption, stoppage and spare parts be first collated, and that benchmarks 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 most easily ignored of the topic is the cost of a single eligible item and the full life cycle. Plants should set red lines of quality and equipment loads at the same time as key products, and should first identify acceptable ceilings for quality defects before discussing speed and energy consumption targets. 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.

[Design Focus] The main line of this case is to replace the simple price with TCO and the current cycle. In geometric and material programmes, gradual compression controls should be applied to cut the heat, and sufficient corridors should be maintained for gas escape, while gradual compression controls should be used to cut the heat and sufficient corridors for gas escape. 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-valid] program proposes a minimum of 48 hours of continuous operation, with a 100-mode extraction for each stabilization phase, and records the screw-back load, back pressure stability and daily production. The test shall be co-signed by the production, quality and equipment triangulations, which shall not allow for a single sector to be independently shaped, and shall be kept under normal ceiling loads for sufficient time to observe the twisting, temperature and measurement drift. 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 cleaning, measurement, photographing and sampling should be combined in the shut-off window to reduce the duplication of the reassembly, and spare parts should be discharged early when the wear and tear trend is close to the threshold and not be processed until the quality is out of control. 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 [integrated cost] cost statement cannot simply be a screw price, the procurement price should be annualized in accordance with the expected useful life, the cost of the low-cost programme should be prevented from being frequently replaced, and the planned downtime would be charged separately from the unplanned downtime, which would 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 recommended that a reference set of data be maintained before and after maintenance to determine wear and tear trends, and that screwhead components or spare parts be prepared for key platforms and that the availability be periodically reviewed. When there is a significant change in the feedstock formulation, retrospection ratio, product structure or target node, the applicable boundary of “how to calculate the switch, test model and certification costs in the retrospectation of the screw” should be reassessed, rather than defaulting that the old conclusion is permanently valid.

Topic: Energy consumption, good rates and combined costs