The job responsibilities of IPQC are briefly stated as follows: The job contents include: the first inspection and tracking of various change documents. Test of 4m1e. Show, track and verify the anomalies found. In detail: IPQC(in process quality control): the purpose is to prevent a large number of unqualified products from flowing into the next process to continue processing. Therefore, process inspection should not only inspect the product, but also inspect the main process elements (such as 4MIE) that affect the product quality. In fact, in the normal production process of mature products, any quality problem can be attributed to the variation of one or more elements in 4m1e. So process inspection can play two roles: 1. Judging whether the product, that is, whether the product quality meets the requirements of specifications and standards according to the test results; 2. According to the test results, judge whether the process, that is, whether each element of the process is in a normal and stable state, so as to decide whether the process should continue production. In order to achieve this goal, process inspection is usually combined with the use of control charts. There are usually three forms of process inspection: (1) first article inspection: first article inspection is also called "first inspection system". Long-term practical experience has proved that the first inspection system is an effective measure to find problems as soon as possible and prevent products from being scrapped in batches. Through the first article inspection, it can be found that there are systematic reasons, such as serious fixture wear or incorrect installation and positioning, poor accuracy of measuring instruments, drawing errors, feeding or formula errors, etc., so as to take corrective or improvement measures to prevent the occurrence of batch unqualified products. Usually, the first piece inspection should be carried out under the following circumstances: first, when a batch of products starts to be put into production; 2. When the equipment is readjusted or the process changes significantly; 3. When the shift or operator changes; 4. When the type or material of the blank changes. The first article inspection generally adopts the "three inspection system" method, that is, the operator conducts self-inspection, the team leader or quality engineer conducts re-inspection, and the inspector conducts special inspection. Whether the first product is qualified after inspection is finally determined by full-time inspectors. The inspector shall identify the first qualified product after inspection and keep it until the product of this category or batch is processed. For mass-produced products, the "first piece" is not limited to one piece, but a certain number of samples should be tested. Especially in the process dominated by tooling (such as stamping), the first piece inspection is more important, and the positioning accuracy of the mold must be corrected repeatedly. In order to make the fixture positioning accurate, the positioning accuracy tolerance precontrol method is generally adopted, that is, the fixture is adjusted repeatedly to control the positioning size within the precontrol line, and the tolerance range is 1/2. This kind of pre-control conforms to the principle of normal distribution, and the United States also adopts this method for defect-free movement. During their work at BBK, they attached great importance to the first inspection of IPQC. After all, domestic enterprises engaged in the production of AV appliances have a low degree of process automation, mainly relying on the operation and control of employees. Therefore, the first inspection in the process of new product production and transfer can avoid many quality problems of materials and processes, and combine prevention with control. (2) Touring inspection Touring inspection refers to that inspection workers go to the workplace or production site in turn according to certain time intervals and routes to check whether the newly processed products meet the requirements specified in the drawings, processes or inspection instructions in the form of spot checks. In mass production, patrol inspection is generally combined with the use of process control chart, which is an important measure to alarm the abnormal state in the production process and prevent the waste products from appearing in batches. When the inspection finds problems in the process, two tasks should be done well: first, find out the causes of abnormal process and take effective corrective measures to restore it to normal state; Second, all products produced from the last inspection to the present inspection should be re-inspected and screened to prevent unqualified products from flowing into the next working procedure (or users). Patrol inspection is carried out according to the time sequence of the production process, so it is beneficial to judge the change of the production state of the process with the time process and to ensure the quality of the whole batch of processed products. For this reason, it is very important to store the processed products in chronological order, but this is often ignored. (3) Final part inspection: It is very important to establish a "final part inspection system" in the machining process of rotary production to ensure the quality through molds or devices. That is, after a batch of products are processed, it is necessary to conduct a comprehensive inspection of the finally processed products. If defects are found, the molds or devices can be repaired before the next batch is put into production, so as to avoid being found after the next batch is put into production and affecting production because of the need to repair the molds. Process inspection is an important link to ensure product quality, but as mentioned above, the function of process inspection is not simple inspection, but closely combined with process control to determine whether the production process is normal or not. Generally, the first inspection and inspection should be effectively coordinated with the use of control charts. Process inspection is not a simple inspection, but should be closely related to quality improvement, transforming inspection results into information to improve quality, and then taking quality improvement actions. It must be pointed out that in any case, process inspection is not simply to reject unqualified products, but to be closely combined with process control and quality improvement. Finally, it points out two problems that should be paid full attention to in the process inspection: first, be familiar with the leading factors that affect the processing quality listed in the "Process Quality Table"; Secondly, we should be familiar with the requirements of process quality management for process inspection. Process quality table is the core of process management, and it is also one of the important bases for compiling "inspection instruction". Generally, the process quality table is not sent directly to the production site to guide production, but various management charts, including inspection plans, should be made according to the "process quality table". For the process identified as the process management point, it should be the focus of process inspection. In addition to inspecting and supervising the operators to strictly implement the process operation regulations and the provisions of the process management points, inspectors should also verify the change of quality characteristics of the quality management points and the leading factors affecting it through patrol inspection, check whether the inspections and records of the operators are correct, and assist the operators to analyze and take corrective measures. The old seven methods of QC: 1. Hierarchical classification method: classification by layer, statistical analysis respectively: finding problems from different levels. 2. Characteristic factor diagram: looking for causality: looking for the reason of the result. Also known as fishbone figure 3. Checklist: Investigate and record data for analysis: Collect and organize data 4. Figure: Find the relationship between the two: Show the linear relationship between variables 5. Histogram: analyze data distribution: show the distribution of processes 6. Control chart: Understand the change of process capability. This is the role, identifying the source of the wave 7. Plato: Find out the important few functions: Determine the dominant factors (the so-called 28 principle) Seven new QC technologies: 1. Correlation diagram method: the role of clarifying the relationship between complex factors II. System diagram method: a systematic means to achieve the goal III. Affinity diagram method: extract information from messy language materials 4. Matrix diagram method: examine the relationship between existing problems and variables from multiple angles. 5.PDPC. Possible obstacles and results. 6. Arrow diagram method: make a reasonable plan. Rectangular data analysis method: eight principles of quality management for multivariate transformation and multivariate data analysis 1. Pay attention to customers: organizations depend on customers, so they should understand the current and future needs of customers. Meet customer requirements and strive to exceed customer expectations. 2. Leadership: Leaders should establish the purpose and direction of organizational unity, and they should create and maintain an internal environment so that employees can fully participate in the realization of organizational goals. 3. Full-time participation: People at all levels are organizers, and only with full participation can their talents bring benefits to the organization. 4. Process method: manage activities and related resources as processes. The expected results can be obtained more effectively. 5. Systematic management method: identifying interrelated processes as systems, understanding and management will help organizations improve the efficiency of achieving goals. 6. Continuous improvement: The continuous improvement of overall performance should be the eternal goal of the organization. 7. Fact-based decision-making method: Effective decision-making is based on data and information analysis. 8. Mutually beneficial relationship with suppliers: organizations and suppliers are interdependent, and mutually beneficial relationship can enhance the ability of both parties to create value. The above eight quality management principles constitute the basis of quality management system standards and solve the problems. 1. Mining problem 2. Select question 3. Insert question 4. Analyze data. Propose method 6. Choose countermeasure 7. Drafting action 8. Comparison result 9. Standardize the inspection process of IPQC. Seven tips. Eight principles. The purpose of nine-step IPQC is to check the production process, effectively check and control the production status of each process, and fully meet the product quality requirements. IPQC responsibilities: production line staff: responsible for the self-inspection of products in this station. Production foreman: responsible for supervising and tracking production status and quality achievements, and guiding employees to work correctly. IPQC: responsible for the supervision of process inspection and exception handling. Relevant departments: participate in and cooperate with the analysis and handling of process anomalies. Production technician: responsible for the debugging of workshop machinery and equipment. 1.IPQC operation requirements: ① During ipqc inspection, the appearance, size, assembly, packaging and performance of products must be inspected according to SIP, engineering blueprint, SOP, bill of materials and process standards, and relevant inspection records should be made. ② Inspection frequency: Check the product quantity and inspection items according to SIP. ③ When customers carry out SPC control on key control items, they must follow the requirements of inspection specifications. (4) When any abnormality is found, notify the workshop and relevant departments to make improvement, and issue PDCS to the responsible departments when necessary. Ii. the content of IPQC on-site inspection: 1, and check whether the operation documents related to this product are complete. 2. Check whether the production equipment and tools are regularly maintained and leave written records. 3. Whether the setting of process parameters meets the requirements of process parameters. 4. Product production environment; Whether it meets the relevant requirements such as manufacturing and inspection operation specifications. 5. Is the material consistent with the BOM? 6. Whether the quality status of each product is distinguished by unique identification. 7. Whether the defects are traced back in time and thoroughly. 8. Whether employees operate in strict accordance with safety regulations. 9. Whether there are hidden dangers at the site. 10, whether the employee self-inspection is thoroughly and effectively implemented. 1 1, whether the work practices of employees are strictly in accordance with SOP. 12, whether employees wear relevant labor protection articles according to the work instructions. 13, whether the relevant execution documents, samples and measuring tools used on site are controlled. 14, whether it can meet other relevant requirements. 3. Exception handling of inspection process: 1. The main types of process anomalies: equipment anomalies, tool anomalies, quality anomalies and process parameter anomalies, including IPQC inspection contents. 2. When the operator finds that the production operation is not smooth or that the self-inspection is abnormal, he shall notify the person in charge of the site to improve and eliminate it, and report to the site IPQC or the production team leader or foreman. 3. If the IPQC inspection process is abnormal, the person in charge of the site shall be informed to improve and eliminate the abnormality, and the person in charge shall handle it within half an hour. 4. After the exception handling is completed, the corresponding handling records should be made. 5. If the problem is extremely serious, or the person in charge of the problem cannot be ruled out in a short time, it should be reported to the corresponding supervisor for handling. At the same time, IPQC should send PDCS to the responsible department. 6. If the process is abnormal and the machine stops for more than one hour, the first piece must be confirmed again when the production is resumed before the formal production can begin. 7. Non-conforming products produced in abnormal process shall be handled according to Non-conforming Product Control Procedure. 8. If IPQC finds any factors that affect the product quality during the inspection, it will send PDCS to the relevant responsible person, and QE will send the 8D report to the responsible department when solving major quality problems, which is based on the quality problem analysis and handling process. 5m 1E refers to why, who does what, where, when and how to do it well; The spirit of ISO is to write out what you say and do. Internal audit can be divided into serious unqualified, slight unqualified and observation items according to the severity; Quality cost is divided into: prevention cost, appraisal cost, internal failure cost and external failure cost; Why should we identify the product? Control and record the unique identification of products, so as to trace and analyze the causes of problems and avoid recurrence; What is the variety cost? Expenses incurred by enterprises in carrying out variety activities;