Quality control process
Quality control process
1. Incoming Material (Cargo) Inspection (IQC): It is the primary control point for the factory to prevent unqualified materials from entering the production process.
①Incoming inspection items and methods:
a) Appearance: generally use visual inspection, hand feel, and comparison samples for verification;
b) Dimensions: generally verified by measuring tools such as calipers and micrometers;
c) Characteristics: such as physical, chemical, and mechanical characteristics, which are generally verified by testing instruments and specific methods.
②Incoming inspection method: a full inspection, brandom inspection
③Processing of inspection results:
b) Rejection (i.e. return);
c) Concession acceptance;
d) Full inspection (select unqualified products to return)
e) Re-inspection after rework
④ Standards based on: "Technical Standards for Raw Materials and Purchased Parts", "Incoming Inspection and Test Control Procedures", "Physical and Chemical Inspection Regulations", etc.
2. Production process inspection (IPQC): generally refers to the quality control of the production activities at each stage after the material is placed in the warehouse to before the finished product is placed in the warehouse, that is, Inprocess Quality Control. Compared with the quality inspection at this stage, it is called FQC (Final Quality Control).
① The main methods of process inspection are:
a) Combination of first article self-inspection, mutual inspection and special inspection;
b) Process control is combined with random inspection and patrol inspection;
c) Centralized inspection of multiple processes;
d) Inspect each process step by step;
e) Inspection after the product is completed;
f) Combination of sampling and full inspection;
②In-process quality control (IPQC): itinerant inspection of the production process.
a) First article inspection;
b) Material verification;
c) Inspection: Ensure proper inspection time and frequency, and inspect in strict accordance with inspection standards or work instructions. Including the inspection of product quality, process regulations, machine operating parameters, material placement, identification, environment, etc.;
d) The inspection record should be filled in truthfully
③ Process product quality inspection (FQC): It is the quality verification after the completion of the product to determine whether the batch of products can flow into the next process, which is a fixed-point inspection or acceptance inspection. a. Inspection items: appearance, size, physical and chemical properties, etc.; b. Inspection method: generally adopt sampling inspection; c. Disqualification treatment; d. Record;
④ Standards based on: "Operation Instructions", "Process Inspection Standards", "Process Inspection and Test Procedures" and so on.
3. Final inspection control: the finished product shipment inspection. (Outgoing Q.C)
4. Feedback and handling of abnormal quality:
① If you can judge by yourself, directly notify the operator or the workshop to deal with it immediately;
② If you can’t judge by yourself, you should submit the bad model to the supervisor for confirmation, and then notify you to correct or deal with it;
③ The abnormal situation should be truthfully recorded;
④ Confirm the corrective or improvement measures, and track the treatment effect;
⑤ The inspection of semi-finished products and finished products should be clearly marked, and the relevant departments should be supervised for isolated storage.
5. Quality records: Provide objective evidence for completed quality operation activities and results.
a) Must be: accurate, timely, clear, complete and affixed with an inspection seal or signature
b) It must also be done: timely sorting and filing, and storage in a suitable environment.