Die Casting Production Process Quality Control
2023-09-07 04:49
Quality control of production and processing
1. Product quality
(1) Product quality characteristics
Different products, according to the requirements of their respective use, with different quality characteristics, there are many types of indicators, summarised in five kinds of industry: performance indicators, life, reliability, appearance, economy. These 5 characteristics, different products have different emphasis, it is impossible to 5 co-exist.
(2) Product quality standards
The main characteristic of product quality to reflect the technical parameters clearly defined is the formation of documents, which are the product technical standards or quality standards. Standards can be divided into national standards, ministry standards and enterprise standards.
(3) Improve the significance of product quality
Quality is the lifeline of the enterprise, improving the competitiveness of the enterprise is an important pillar, is to improving the economic efficiency of the enterprise is an important condition.
2. Production process quality control
The quality of any product has a formation process and maintenance process, the quality of the formation process, including market intelligence analysis and research, development and design, production and manufacturing. Maintenance process includes sales service and maintenance service. Manufacturing is part of the quality into, is the key to ensure quality.
(1) Do a good job of technical inspection work
Implementation of strict technical inspection to ensure and improve product quality is one of the important means of comprehensive quality management is an integral part.
1) Classification of inspection methods (part).
| By process stage | Pre-inspection Raw materials are imported into the factory and before production in the processing plant. |
| Intermediate inspection Between the two processes of processing | |
| Final inspection Workshop or factory inspection department | |
| By number of inspections | Full inspection Inspection of processed parts one by one, applicable to small batch sizes. |
| Sample Inspection Part of the batch, for large batch sizes and stable process capacity. | |
| According to inspectors | Specialised inspection Inspection by a full-time inspector |
| Self-inspection Self-inspection by the operator | |
| Mutual Inspection by production workers to check each other |
Such as a die-casting plant using self-inspection for 100 ~ 200 pieces of inspection once a day, inspection 4 times a day, or a full inspection of three ways to carry out
2) Quality control point set up: generally in some process before or after the inspection (inspection only increases cost, not increase production value, should not be set too much).
➀ At the beginning of the production process; ➀ Before the assembly process; ➀ At the beginning of the production process
➁ before the assembly process.
➁ before the assembly process; and ③ before the product is exchanged for a change in responsibility.
➃ After critical processes where quality is prone to fluctuation or where product quality has a greater impact; ➃After the final process; ➃After the final process.
➄ After the last process.
➅ Piecework incentive wage system factory, after the completion of the process.
For example, a die-casting plant quality checkpoints are as follows: die-casting → check → de-watering, Phi Feng → check → machining → polishing → shaping → check.
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