Incoming quality control (IQC) is the process of controlling the quality of materials and parts for manufacturing a product before production begins. Whether you manufacture industrial or consumer products, component and material quality is a key determinant of finished product quality
There are three primary types of quality inspections: pre-production, in-line, and final. There are a variety of details that must be inspected and approved during each phase in order to detect and correct quality problems.
An incoming inspection, also known as a receiving inspection or material inspection, validates the quality of purchased raw materials based on set acceptance criteria. It is performed by quality assurance personnel in the manufacturing facility to resolve quality issues during pre-production.
The purpose of the incoming inspection is to identify potentially non-conforming parts, prior to placing the material in the inventory or moving it to the production flow.
The main objective of inspection is to meet customer requirements, wants, and needs. The objective is to prevent defective product flowing down the successive operations and prevent loss to the company. Many characteristics cannot be inspected at the final stage of production.
What procedure to follow in your incoming inspection?
When it comes to the procedure for picking samples at random, the basic steps will probably be:
- Get the delivery plan/notes, indicate what needs to be checked
- Get the “not checked yet” parts in one area
- Count quantity (if needed)
- Pick samples randomly
- Conduct the inspection (e.g. visual check, dimensional check, special testing…)
- Set aside defectives, classify them and count them
- If the batch is accepted, have it moved into the “checked and OK” area. If it is accepted but there is a special note for production (e.g. ‘must do 100% check on point XYZ’), make sure it will be seen and followed. If it is refused, trigger the appropriate response (e.g. send back to the supplier, invite the supplier to come and do a sorting, etc.).