QC quality control refers to quality inspection, or in layman's terms, inspection.

IPQC (process quality control) quality management project process inspection.

FQC product quality control (finished or final quality control)

IQC incoming inspection is raw material inspection.

The level of QC is lower than that of QA, which is commonly known as inspection.

I. Inspection of raw materials (IQC)

L raw material incoming inspection includes three aspects:

① Warehouse inspection: whether the name, specification, model and quantity of raw materials are consistent with the actual situation is generally completed by warehouse managers.

② Quality inspection: check whether the physical and chemical characteristics of raw materials meet the corresponding raw material inspection regulations, and generally adopt sampling inspection.

(3) Trial production inspection: take small batches of samples for production and check whether the production results meet the requirements.

L treatment of unqualified materials:

① Marking: mark "unqualified" on the outer package, pile it in the "unqualified area" or hang the "unqualified" notice board, etc.

② Disposal: returning or transferring goods or other special purchases.

③ Corrective measures: provide relevant requirements or suggestions to suppliers to prevent the recurrence of batch nonconformities.

L emergency release: due to the urgent need of production, the materials that need to be used before the inspection report comes out are emergency release. Keep samples for inspection, and the released materials should have special marks and records for tracking when necessary.

L special mining:

① Purchasing materials from unqualified suppliers-strengthen inspection.

(2) Materials used for unqualified inspection-selected or used after repair.

L special attention should be paid to the losses caused by nonconforming products:

① In the investment stage, it is found that the loss cost is 1 yuan.

② The loss cost found in the production stage is 10 yuan.

③ In the hands of customers, the loss cost is 100 yuan.

Second, the process inspection (IPQC)

The inspection scope of IPQC includes:

① Product: the quality of semi-finished products and finished products.

② Personnel: poor execution quality and equipment operation skills in operating staff flow.

③ Equipment: the running state and load degree of the equipment.

④ Process: Whether the process is reasonable or not, and whether the process meets the requirements of product characteristics.

⑤ Environment: Whether the environment is suitable for product production.

L process product inspection: the inspection methods of products are very different and flexible, which can be more flexible according to the actual production situation and product characteristics.

Full inspection by quality inspector: suitable for multi-variety and small batch process products with fatal defects when key processes are changed. If the workload is heavy, qualified ones are allowed to be transferred out or put into storage, and unqualified ones are ordered to rework or return to maintenance immediately.

2. Sampling inspection by quality inspectors: it is suitable for a large number of process products with low single value and no fatal defects when the general process changes.

2 Employee self-inspection: The operator first conducts self-inspection on the products processed by himself, and then sends them to the next working procedure after passing the inspection. It can improve the qualified rate of product circulation and reduce the workload of quality inspectors, and it is not easy to control and there are sudden anomalies.

2. Employees' mutual inspection: operators in the next working procedure can inspect the products of employees in the previous working procedure, and they can not accept the defective products in the previous working procedure, and supervise each other, which is conducive to mobilizing enthusiasm, but it will also lead to quality anomalies such as shielding and quarreling.

2 Combination of various methods: organically combine various inspection schemes to learn from each other's strong points to prevent defective products from flowing into the next working procedure or warehousing, but the inspection cost is high.

L Process quality inspection: inspection of personnel, equipment, technology and environment.

Third, the finished product factory inspection (OQC)

Finished products must be inspected before leaving the factory to achieve the goal of zero defects, customer satisfaction and zero complaints.

Inspection items include:

① Inspection of finished product packaging: whether the packaging is firm and meets the transportation requirements.

② Inspection of finished product identification: whether the trademark batch number is correct.

③ Appearance inspection of finished products: whether there are any damages, cracks, scratches, etc.

④ Functional performance inspection of finished products.

If the batch is qualified, it will be released. Unqualified, should be timely rework or repair, until qualified.