Statistical process control (SPC) is a method of quality control which employs statistical methods to monitor and control a process. SPC can be applied to any process where the "conforming product" (product meeting specifications) output can be measured.
Statistical process control (SPC) is defined as the use of statistical techniques to control a process or production method. SPC tools and procedures can help you monitor process behavior, discover issues in internal systems, and find solutions for production issues. Statistical process control is often used interchangeably with statistical quality control (SQC).
SPC is an industry-standard methodology for measuring and controlling quality during the manufacturing process. Quality data in the form of Product or Process measurements are obtained in real-time during manufacturing.
Statistical Process Control (SPC) is a way to figure out how a process or system should behave. A model for “normal” system behavior is created with set limits. This allows variations from the norm to be identified. All systems have variation, but SPC helps you to identify when these variations are unacceptable or unpredictable.
Statistical Process Control, commonly referred to as SPC, is a method for monitoring, controlling and, ideally, improving a process through statistical analysis.
SPC states that all processes exhibit intrinsic variation. However, sometimes processes exhibit excessive variation that produces undesirable or unpredictable results. SPC, in a manufacturing process optimization context, is used to reduce variation to achieve the best target value.
Statistical quality control is important because it uses statistical methods to monitor the quality of a product. This type of auditing maximizes manufacturing productivity and minimizes errors associated with human judgement.
Statistical Process Control Tools
- Pareto Chart.
- Cause and Effect Diagram.
- Defect Concentration Diagram.
- Control Chart.
- Scatter Diagram.
- Check Sheet.
Benefits of Statistical Quality Control.
1) It provides a means of detecting error at inspection.
2) It leads to more uniform quality of production.
3) It improves the relationship with the customer.