The LED industry attaches great importance to picking and testing. The source of LED materials and raw materials must also have good control to make LED products.
IQC (incoming quality control) means the quality control of incoming materials, referred to as incoming material control. The reason why I talk about IQC here, not IPQC (process quality control), FQC (finished product quality control) and so on. Because of all kinds of fakes, inferior products are constantly eroding us. In the face of these inferior products, a small mistake may cause us huge property losses or ruin the future. Therefore, it is extremely urgent for each LED manufacturer to handle the quality control of LED materials and raw materials. Only when the materials are good can you make a good product.
1. Raw material inspection (IQC)
The original factory inspection includes three aspects:
a. Library inspection: Whether the specifications, model, quantity, etc. of raw material names are in line with reality, is generally completed by warehouse management personnel.
b. Quality inspection: Check whether the physical and chemical properties of raw materials meet the requirements of the corresponding raw materials inspection, and generally adopt the sampling method.
c. Test: Take small batch samples for production and check whether the production results meet the requirements.
1~ Disposal of unqualified incoming materials:
a. Marking: “Unqualified†is marked on the outer packaging, stacked in “unqualified area†or “unqualified†signboard is attached.
b. Disposal: return or transfer goods or other special mining.
c. Corrective measures: Provide relevant requirements or recommendations to the supplier to prevent the recurrence of batch unqualified.
2~Emergency release: Due to urgent production, the materials to be used before the inspection report is released for emergency release. Sample inspection is required and the released materials are specially identified and recorded for tracking as needed.
3~ special mining:
a. Purchasing materials from non-qualified suppliers – strengthen inspection.
b. Materials used for inspection failure - selected or repaired.
4~ Special attention should be paid to the losses caused by non-conforming products:
a. The investment phase found that the cost of loss was 1 yuan.
b. The production cost was found to be 10 yuan.
c. Found in the hands of customers, the cost of loss is 100 yuan.
IPQC (InPut Process Quality Control) means process control, which refers to the quality control of products from the production of materials to the final packaging process. (Quality Control Department)
1. Responsible for the first inspection and part of the process inspection, the identification and statistics of defective products in the process;
2. Responsible for inspection, comprehensive inspection of material use, assembly operation, machine operation, environmental compliance, etc. throughout the production process.
3. IPQC is generally the first inspection, inspection and sampling inspection; it is the inspection flow inspection in the process; it is the management of the quality management department.
Production Process Inspection (IPQC): Generally refers to the quality control of the production activities after the material is put into the warehouse and before the finished product is put into storage, namely Inprocess Quality Control. Compared with the quality inspection at this stage, it is called FQC (Final Quality Control).
Second, process inspection (IPQC)
The inspection scope of 1~PQC includes:
a, product: the quality of semi-finished products, finished products.
b. Personnel: The operator performs the process quality and the equipment operation skill is poor.
c. Equipment: equipment running status, load level.
d. Process and technology: Whether the process is reasonable and whether the technology meets the requirements of product characteristics.
e. Environment: Whether the environment is suitable for product production needs.
2~ Process product inspection: For the inspection of products, the inspection methods have great differences and flexibility, and the inspection methods are more flexible according to the actual production conditions and product characteristics.
Full inspection of quality inspectors: Applicable to the process of key process, multi-variety and small batch, process products with fatal defects. The workload is large, and the qualified ones are allowed to be transferred or stored in the warehouse. If they are not qualified, the operating staff is immediately required to rework or return to the market.
Quality inspector sampling: Applicable to process products in the process of general process order, large quantities, low value of single piece, no fatal defects in the process products.
Self-inspection of employees: The operator conducts self-inspection on the products processed by himself, and can be issued to the next process after passing the inspection. It can improve the product transfer rate and reduce the workload of quality inspectors. It is not easy to manage and control, and there are sudden abnormalities.
Mutual inspection of employees: The next operation operator checks the products of the employees on the road, and can not accept the defective products of the previous process, and supervise each other, which is conducive to mobilizing the enthusiasm, but also causes the quality anomaly caused by cover-up, noisy, etc. .
The combination of multiple ways: organic combination of various inspection programs, to learn from each other's strengths, to prevent defective products from flowing into the next process or storage, but the inspection cost is higher.
3~ Process quality inspection: inspection of personnel, equipment technology and environment.
Outgoing Quality Control, OQC (shipment quality management)
When the product is shipped, the supplier must carry out the shipment inspection in accordance with the standards agreed by the contract or the order. OQC is the quality management before shipment, mainly for the packaging status of the products, anti-collision materials, product identification / safety signs, accessories (Accessory Kits), manual / warranty, additional software CD, product performance test report, external Box labels, etc., to do a comprehensive check to ensure that the customer receives the goods and the agreed content is consistent.
After the non-conformity found after OQC, the end can not be qualified, and may return to the pre-process or semi-finished stage for rework or repair, and then be detected once by OQC. If the product cannot be reworked or the quality of the repair is missing, it will be directly scrapped and included in the cost item of production depletion; or it will be processed by downgrading (Down Grade) and sold to the customer with lower quality requirements.
Some manufacturers' "shipment management" will conduct a quality management sampling inspection of the products to be shipped. The quality inspection of this stage will focus on "sampling inspection" and the "all inspections" in the FQC stage. different. Of course, for high-priced or high-grade products, the overall condition of the product (main product itself, accessories, manuals & guarantees luxury books, labeling labels, packaging, etc.) is again inspected at the OQC stage (100% full inspection). It is necessary.
Third, finished product inspection (OQC)
The finished product must be factory-examined before leaving the factory to meet the goal of zero defects in customer satisfaction.
Inspection items include:
a. Finished product packaging inspection: Whether the packaging is firm and meets the transportation requirements.
b. Inspection of finished product identification: If the trademark batch number is correct.
c. Appearance inspection of finished products: Whether the appearance is damaged, cracked, scratched, etc.
d. Inspection of functional performance of finished products.
If the batch is qualified, it will be released. If it is unqualified, it should be reworked or repaired in time until the inspection is qualified.
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