How to Strengthen Quality Control Chapter 1 1. Product design quality management and R&D
Quality control in product design and research and development is the basis of quality management. Relevant data show that 70% of the product quality depends on the design. This is because product structure, product performance, product quality, production cost, product delivery time, man-machine relationship, maintainability and manufacturability are all formed in the design stage. In addition, product design also directly affects the service life and cycle cost of products. Generally speaking, the more enterprises pay attention to product design, the better their performance. Therefore, in the fierce market competition, enterprises should constantly improve and innovate design quality according to their own development requirements, do a good job in product research and development management, and lay a good foundation for product quality.
2. Quality control of purchased materials
In material procurement, the function of procurement management can not only control the cost, but also control the product quality from the source. When selecting suppliers, we should not only consider their prices, but also evaluate and select enterprises in terms of service, competitiveness, operation, management and technical ability of suppliers in combination with relevant departments. After selecting a good supplier, it is necessary to regularly evaluate the quality and delivery of the supplier's goods. Unqualified suppliers need guidance and improvement. At the same time, before purchasing in large quantities, relevant personnel should strictly inspect the purchased materials to ensure the effectiveness and qualification of the purchased materials. Enterprises should follow the principle of "quality first" when purchasing materials, reduce service costs and improve product quality and value.
3. Quality management in the production process
Production process is the key link of product quality control. The quality inspection of enterprises should be taken as prevention in advance, and the control before and during the event should be done well to improve the effectiveness of quality management. This requires enterprises to bring all stages of the production process into quality management and integrate them into a systematic quality management system.
(1) production planning stage. That is, do a good job of quality control before production. Strengthen the contact between marketing department and warehousing department, technical department and production department, analyze the influencing factors of product quality, determine production plan according to evaluation and demand, and communicate with suppliers in advance; Strengthen the verification of packaging materials, production processes, facilities and equipment to ensure the production of high-quality products.
(2) Enterprises in the feeding stage. Relevant departments should strictly check and accept the supply channels, materials, labels and packaging of materials in accordance with the standards, and do a good job in warehousing and warehousing acceptance to avoid confusion or damage of materials to meet the needs of production quality.
(3) production stage. This link is mainly to grasp the main influencing factors of product quality, establish quality control points, carry out special management on weak links and key parts, control the production process and ensure product quality. At the same time, strengthen the quality inspection work in different production links: improve the quality inspection institutions, arrange relevant quality inspection facilities and personnel, and improve the quality inspection system; Graded inspection, clear responsibility, special inspection, mutual inspection and self-inspection; Ensure the authority of quality inspection institutions, etc.
(4) Pay attention to after-sales service and improve customer satisfaction. For example, build a customer satisfaction collection system to keep abreast of customers' satisfaction with enterprises and products.
How to Strengthen Quality Control Part II: Change of Concept
1, Dai Mingshuo: "Companies can't buy high-quality methods, and this process must be realized through top management." Whether a company's quality work can be effectively carried out depends on the support of the company's top management. In addition, as far as my experience is concerned, many enterprises will implement ISO900 1, TS 16949 and so on. Just because you need to get an order, you passively allocate it yourself, thinking that the order will flow in after authentication, regardless of whether the system is effective or not. As we all know, the real purpose of implementing ISO900 1 and TS 16949 is to make the system develop healthily and improve continuously.
2, the whole process of quality management, quality management in the whole process of design-procurement-production-sales-use-service, and try to run some effective means, such as: potential failure mode and consequence analysis, statistical process control, product quality planning and control plan in advance, production parts approval procedures, measurement system analysis (it is not necessary to implement TS 16949 to do these), so as to
3, total quality management, product quality assurance is not just the quality department.
4, customer first, establish the concept that the next working procedure is the user and the service object is the user.
5. The combination of strict control and active prevention focuses on prevention, and "prevention is better than firefighting". The quality department should not just be a tired fireman.
6. In the process of quality management, various control methods are combined. Such as brainstorming, 5Why analysis, QCC and quality control.
Second, pay attention to website quality and its influencing factors
On-site quality refers to the quality of products actually produced according to product design, that is, on-site manufacturing quality. On-site quality management is the management of manufacturing quality and related work quality, and its main influencing factors are people, machines, materials, methods, environment and measurement. Now some enterprises add a Management (management) to become 6M 1E, which is very reasonable.
1, people-low operating skills, unskilled technology, failure to operate according to work instructions, poor quality awareness, and inadequate self-inspection and mutual inspection.
2, machinery and equipment maintenance is not good, the accuracy is declining, and there is no spare parts plan for key components.
3. Materials-incoming materials do not meet the requirements, which brings troubles to subsequent production.
4. Process method-unreasonable processing method and inaccurate tooling.
5. Environment-the influence of temperature and humidity on reliability and electrical performance; Influence of lighting and noise on employees, etc.
6. The measurement and equipment are not checked regularly, and the accuracy and measurement results are inaccurate; Inconsistent personnel operation methods, etc.
7. Management-Dr. Zhu Lan believes that most quality problems are management mistakes, not technical problems at the working level. Generally speaking, he thinks that the defects of management control account for more than 80% of all quality problems.
Three. Key points of on-site quality management
1. Strengthen the process management and continuously improve the process, so that the manufacturing process is always in a stable and controlled state.
2. Reasonable selection of inspection methods, combining first inspection+inspection+sampling inspection+fixed-point inspection.
3, strengthen the propaganda of quality consciousness, make the concept of quality deeply rooted in the hearts of the people.
4. Establish a quality assurance team with perfect organizational structure and well-trained personnel, and allocate quality assurance manpower according to the production scale.
5. Grasp the quality trends in time, go deep into the site and take the site as the center.
6. Conduct statistical analysis on defective products in time, and fail to find the responsible person and reasons. Did not put forward preventive measures to "let go"; The parties have not been "let go" by education.
7, process control, do a good job of statistical process control (SPC) of key stations.
8, the implementation of 5S work, clean and tidy working environment, is the basis and premise of quality management.
9, strengthen the training of employees' work skills, and make the training implemented, rather than a mere formality.