slagingskans

Slagingskans, translated as the scrap probability, is a metric used in manufacturing and product lifecycle management to denote the likelihood that a produced unit will be scrapped due to defects, nonconformities, or obsolescence. The concept is widely used in quality assurance to quantify waste and to compare performance across processes, products, or suppliers.

Calculation and interpretation: If N units are produced in a period and S of them are scrapped, slagingskans = S/N. It is commonly expressed as a percentage (the scrap rate). In probabilistic terms, the number of scrapped units can be modeled as a binomial variable with probability p equal to the slagingskans. This metric supports budgeting for material losses, planning for rework or disposal, and evaluating the impact of process changes on yield.

Factors and drivers: Slagingskans is influenced by process capability and stability, material quality, design complexity, tooling wear, operator skill, inspection regimes, and changes in specifications. Improvements in manufacturing processes, supplier quality, and design simplification typically reduce the slagingskans and boost overall yield.

Applications and use: Companies monitor slagingskans to estimate costs associated with scrap, set targets for continuous improvement, and prioritize investments in equipment, training, or quality control. It is often tracked alongside other yield metrics such as rework rate, spoilage, and net output.

Limitations: Slagingskans measures scrapped units but may conflate scrap with rework or returns in some contexts. It should be interpreted in the scope of the production system, lot size, and time period, and used in combination with other quality and cost metrics for informed decisions.