Details of finished product quality inspection process

Quality inspection is an activity of observing, measuring and testing one or more quality characteristics of products, and comparing the results with the specified quality requirements to judge whether each quality characteristic is qualified. The following is the flow chart of finished product quality inspection compiled by me for your reference. Welcome to read!

Flow chart of finished product quality inspection

Measures for the administration of finished product inspection 1. purpose

Ensure product quality meets customer requirements and prevent defective products from flowing into customers.

2. Scope

Applicable to the final ex-factory inspection of all products produced by the company.

3. Responsibility

3. 1 Quality Department

Formulate and constantly improve the ex-factory inspection standard of each product, and the special inspector is responsible for the ex-factory inspection of the designated line, carry out the inspection and judge whether it is qualified. Have the right to prohibit unqualified products from leaving the factory and be responsible for product quality. Manage the causes and improvement measures of unqualified products in factory inspection. Approve the rework plan for unqualified batches, and refuse to acknowledge the unqualified reasons and measures in the rework plan. If the factory inspection results prove that there are problems in the production process, the manufacturing department may be required to suspend production.

3.2 Production Workshop of Manufacturing Department

Carry out production according to the production plan, record the production performance, put the finished products into the area to be inspected, and paste the current product list on the product packaging. Important information such as production line, production date, model, customer code, product serial number range and quantity are marked on the current product list, indicating that the product is to be inspected. Responsible for handling unqualified products, making rework plan for unqualified batches, and rework according to the approved rework plan (obviously poor operation). Fill in the rework plan and results in the unqualified factory inspection report and submit it to the inspector.

3.3 Technical Engineering of Manufacturing Department

For the nonconforming products that are inspected in the factory, except for obvious poor operation, the manufacturing department will lead the line to analyze the causes of nonconforming products, and the technical engineering of the manufacturing department will be responsible for analyzing the causes of nonconforming products. Make a rework plan for unqualified batches to ensure that the rework plan is a corrective measure for the reasons of unqualified products.

3.4 Logistics Department

Do not accept finished products that have not passed the inspection by the quality department. Manage qualified finished products according to the regulations, and do a good job of first-in-first-out management.

3.5 Relevant departments

Defective products in ex-factory inspection are related to the responsibilities of relevant departments, which are responsible for the implementation and management of corrective/preventive measures.

4. Procedures

4. 1 definition

Strict: corresponding to batches with the same quantity, but the sampling quantity, receiving judgment quantity and not receiving judgment quantity are different. There are three kinds of strictness, namely, normal inspection, tightening inspection and relaxation inspection.

Normal inspection: The inspection scheme adopted when the average process is better than the receiving quality is called normal inspection.

Strict inspection: a sampling scheme with stricter acceptance criteria than the normal inspection sampling scheme.

Loose inspection: the sampling number is smaller than the corresponding normal inspection scheme, and the acceptance standard is not much different from the normal inspection sampling scheme.

4.2 Batch management

The production workshop of the manufacturing department is responsible for pasting the current product list on the stacked finished product packaging, and recording the production performance in time and truthfully. Do batch management well. Fill in the batch inspection application form and submit it to the factory inspector of quality department.

4.3 Sampling inspection

The quality inspector confirms whether the batch inspection application form sent by the manufacturing department is consistent with the information in the current product list. Random sampling should be carried out after packaging. Sampling method adopts random sampling method. Be careful when sampling to avoid falling or other forms of damage. If there is any damage, the manufacturing department will repair the product, and after the repair is completed, the full-function test will be carried out. After the inspection is correct, it is classified into the corresponding batch.

4.4 Check the benchmark

The inspection level and acceptable quality limit shall be implemented in accordance with the provisions of the finished product inspection specification. When customers have special requirements, they should be applied first.

4.5 If defects (including fatal defects, serious defects and minor defects) are found in the ex-factory sampling inspection, the sampling batch shall be reworked.

4.6 The benchmark for stopping the production line when the factory inspection is poor.

(1) When fatal defects (defects that pose a threat to people and property) occur, such as poor pressure resistance.

② Total number of defects.

(3) The batch of raw materials is not good.

4.7 Inspection conditions

Unless otherwise specified, the inspection shall be conducted in the inspection room with normal temperature, humidity and illumination above 500LUX.

4.8 Inspection Methods

4.8. 1 Inspection is usually divided into appearance, structure, identification, function, electrical characteristics, packaging inspection, etc.

4.8.2 Refuse to inspect the batch lacking some materials (accessories, labels, etc.). ).

4.9 Inspection Type

4.9. 1 Appearance inspection

functional check

4. Determination of test results of10

4. 10. 1 For each inspected sample, every item inspected is judged as qualified or unqualified according to the standard.

4. 10.2 nonconforming products are classified into fatal defects, serious defects and minor defects according to the defect level.

4. 10.3 After the inspection of all items is completed, judge whether each inspected sample is qualified according to the inspection results of each item. If there is more than one defect in the defective sample, the sample should be determined as the most serious sample. The results are recorded in the Finished Product Ex-factory Inspection Record Form.

4. 10.4 batch standard

By checking the level and AQL value, the corresponding word code is found in the sample size word code table. Then look for Ac and Re values in the sampling scheme (according to the standard requirements, choose one of normal inspection, relaxed inspection and tightened inspection). What if the sample is not good? Ac, the batch is judged to be qualified. What if the sample is not good? Re, determine that the batch is unqualified.

4. 1 1 batch processing

4. 1 1. 1 qualified batch

If the batch is judged to be qualified, it shall be deemed as qualified on the application checklist, and the current product list shall be stamped with a qualified seal. The Logistics Department shall not put nonconforming products into storage, and the Manufacturing Department shall not put them into storage.

4. 1 1.2 Unqualified batch

If the batch is judged to be unqualified, the unqualified stamp will be stamped on the current product list. Apply for unqualified treatment in the checklist, and issue the unqualified report of finished product ex-factory inspection. The technical engineering department of the manufacturing department is responsible for analyzing the causes of nonconforming products, formulating the rework plan for nonconforming batches, and ensuring that the rework plan is a corrective measure for the causes of nonconforming products. Fill in the cause analysis results, rework methods and preventive measures of bad samples on the unqualified factory inspection report of quality department. The rework plan is approved by the quality department. Feedback the rework results to the quality department. The quality department refuses to check if the unqualified report of ex-factory inspection is not filled in or the contents filled in are false. Unqualified batches are submitted for re-inspection after being processed (sorted, reworked and scrapped) by the manufacturing department. Rework should be carried out on the original production line as far as possible. If the re-inspection is still unqualified, the quality department should stop the inspection and ask the manufacturing department to stop production, and convene relevant departments to negotiate and formulate countermeasures. If it is confirmed as qualified, the processing procedure of qualified batch is executed.

5. Relevant documents and records

Flow chart of ex-factory inspection

Finished product ex-factory inspection record form

Unqualified report of finished product ex-factory inspection

Batch inspection application form

Basic knowledge of quality inspectors. Quality inspection

Quality inspection is the activity of measuring, inspecting, testing and measuring one or more characteristics of products or services, and comparing these characteristics with the specified requirements to determine compliance. A more concise definition: the so-called quality inspection is to evaluate the conformity by measurement and test (ISO9000) through observation and judgment, or to decide whether it can be provided to consumers in ex-factory inspection occasions.

Second, the role of quality inspection: on behalf of the enterprise, it should be accepted on behalf of the country and users, so it is closely related to the interests of society and users (consumers). Quality inspection should not only play a key role in the quality of ex-factory products, but also safeguard the legitimate interests of enterprises and prevent false inspection. Quality inspection should safeguard the interests of producers, users and the country. So quality inspection must be fair and scientific.

Three. Basic functions (responsibilities) of quality inspection

1. Check-in function: the most basic quality assurance function, first of all, is to eliminate waste products and defective products to ensure that the products flowing down or leaving the factory are qualified products.

2. Preventive function: prevent nonconforming products through process capability measurement or control and through first inspection and inspection.

3. Reporting function: the feedback and transmission function of quality information enables leaders and relevant quality management departments to grasp the quality status of products in time.

In order to understand the changes and existing problems of product quality, the inspection results must be fed back to the leaders and relevant quality management departments in order to

Make a correct judgment and take effective decision-making measures.

4. The role of improvement: put forward practical suggestions and measures.

Four, the basic content of quality inspection

1. Be familiar with inspection basis, such as product technical standards or requirements, inspection standards (including inspection items, technical requirements, inspection methods, inspection level and quality level) and other requirements (such as contract requirements).

2. Use measuring equipment correctly and master inspection methods. Training and practice are needed to improve the inspection level (accuracy and consistency).

3. Metrology: Metrology testing, that is, measuring products or samples through certain testing methods, or identifying the quality characteristics of products through physical and chemical analysis or sensory inspection, and providing testing results.

4. Comparison: Compare the measurement and test results with the inspection basis (relevant technical standards, relevant technical documents or contract requirements) to determine whether the quality meets the requirements.

5. Judgment: According to the comparison between the inspection results and the technical standards, make a conclusion to judge whether the product quality meets.

6. Disposal: Dispose according to the judgment conclusion and relevant regulations. If the qualified products can leave the factory or be sent for inspection, the unqualified products shall be reworked, repaired, degraded or used for other purposes, rejected and scrapped respectively according to the unqualified conditions.

7. Records: Inspection data and conclusions shall be presented in the form of inspection reports. Records shall be accurate, clear and complete. Records shall be timely, authentic, accurate, complete, verifiable and traceable.

8. Feedback: provide and transmit quality information in quality inspection, including submitting it to commodity inspection, especially the quality information of unqualified products should be fed back to relevant departments in time so as to take corrective and preventive measures.

The basic content mainly includes four links: measurement, comparison, judgment and processing.

Verb (abbreviation of verb) quality inspection method: Quality inspection methods can be classified according to different characteristics.

1, divided by inspection quantity: a. Full inspection B. Sampling inspection

2. According to quality characteristics: A. Counting inspection B. Metrology inspection

3. According to the nature of inspection: a. Physical and chemical inspection B. Sensory inspection

4. According to the integrity of the tested object after inspection, it can be divided into: a. destructive inspection b. non-destructive inspection.

5. according to the purpose of inspection, it is divided into: a. acceptance inspection B. supervision inspection.

Basic test types of intransitive verbs

1, incoming inspection (IQC)

2. Process inspection (IPQC)

3. Final inspection (OQC): A. Finished product inspection B. Ex-factory inspection, also called ex-factory inspection (including packaging and contract inspection).

Seven. Inspection error: There are usually two kinds of inspection errors: false inspection and missed inspection, which can be divided into:

1, subjective: technical error, emotional error, knowingly making mistakes.

2. Target: Program error

Management of nonconforming products: Once nonconforming products are identified, they should be isolated, identified, evaluated, disposed, recorded and notified, among which evaluation and disposal are the key.

1. Use inspection and test marks to distinguish different quality states of products and prevent misuse of unqualified products.

2. evaluation? Don't let go : Don't let go if you don't find out the reason for the disqualification; Don't let go if you don't find out the responsibility; The improvement measures are not implemented.

3. Disposal method: It may become qualified products after rework and need to be re-inspected; After rework, it is still unqualified and needs to be re-inspected; Concession acceptance after approval; Degraded or used for other purposes; Reject or discard.

Nine, the quality requirements of inspection personnel

1, with a certain degree; Serious and responsible working attitude; Familiar with product requirements and inspection technology; Correctly understand the inspection work

2. Product inspectors? Three members? Excellent quality supervisor and strict control; Do a good job as a quality propagandist to improve the quality awareness of production workers; A waiter with good quality should be a good employee who ensures the quality of production workers and helps them produce qualified products.

X. Three-inspection system: it is an inspection system combining operator's self-inspection, workers' mutual inspection and special inspection by full-time inspectors. This triad

A patrol system that combines patrol system with special patrol of full-time patrol personnel.

1. Operator's self-inspection: the manufacturer inspects his products according to the technical standards specified in the drawings, processes or contracts, and makes a judgment on whether they are qualified or not. This inspection fully shows that production workers must be responsible for the quality of their products. Through self-inspection, producers can fully understand the quality problems of their products, use their brains to find out the causes of the problems, and then take improvement measures. This is also the participation of workers. If the product fails to pass the self-inspection, it should be reworked in time. If it cannot be confirmed, the unqualified products shall be identified. Usually? Three self? (Self-inspection, self-inspection qualified products, self-inspection unqualified products and treatment)? A control? Control the unqualified products processed by yourself.

2. Mutual inspection between operators and employees: Mutual inspection means that production workers check each other. The mutual inspection mainly includes: sampling the products transferred from the previous process to the next process; Mutual inspection during shift change in the same process. On-line inspectors or team leaders conduct spot checks on the products processed by this group of workers. This kind of inspection is not only conducive to ensuring the processing quality, preventing mass waste due to negligence, but also conducive to team unity. Operators should check the quality of the previous process after receiving the products of the previous process. If unqualified products are found, they should be returned to the inspector of the previous process for processing.

3. Inspector's special inspection: Special inspection is an inspection conducted by professional inspectors, which is an objective requirement of the modernization of production division and cannot be replaced by mutual inspection and self-inspection. Moreover, the "three inspection" system must be based on professional inspection, because in modern production, inspection has become a special type of work and technology. Full-time inspectors are more skilled than production workers in technical requirements, process knowledge and inspection skills, and the inspection instruments used are more precise and the inspection results are more reliable.

4. In enterprise internal inspection, product inspection can be combined with process control, which is more conducive to improving process quality. For example, product inspectors can correctly understand and perform their duties, so that production workers, enterprises and users can do it? Three satisfied? Then the authority of enterprise inspection work will naturally form. Second, clarify the responsibilities and rights of inspectors from the system. For example, under normal circumstances, when the enterprise stipulates that the operator violates the operating rules, the inspectors have the right to stop their production, and the production workers may not formally put into mass production without the first inspection approval of the special inspector, and so on. Third, enterprise leaders should support and respect the quality department and its personnel to correctly exercise the prescribed rights and judge the conformity (qualified or unqualified) of products.

Eleven, three inspection system in process inspection (first article inspection, inspection tour, completion inspection)

1. First article inspection. Mass production of products. After the first step of each process is completed, the production workers will inspect it themselves, and then send it to the full-time inspector for the first piece inspection. In particular, due to process changes, assembly changes and environmental changes, the first piece is particularly important. The purpose of the first inspection is to prevent batch defects and determine whether the production capacity is sufficient.

2 patrol inspection, that is, inspection in accordance with the prescribed route, project, cycle, procedures and standards. The focus of inspection is special process and key process, and inspection records should be made during inspection. The purpose of inspection is to determine whether the production process capacity remains stable.

3. Completion inspection. Where an inspection process is set, the products of this process must pass the inspection according to the regulations before they can be transferred to the next process. The finished products shall be fully inspected according to the provisions of technical documents to prevent unqualified products from being mixed and submitted to the assembly. The purpose of completion inspection is to determine whether this batch of products can be accepted or transferred.

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