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This article is devoted to analyzing the quality control activities in the production of zinc die castings: a series of basic operations accompanying all stages of the project. Specifically, after defining the quality control, we will deepen the work of the Department in various production stages, and then investigate the activities accompanying large-scale production. Finally, we will use a few words to analyze the advantages that can be brought by the correct implementation of quality control.

 
Definition of quality control

In manufacturing companies, quality control includes a series of activities to verify compliance with customer requirements in the product creation process. However, at the same time, the teams involved in these inspections are also called in the same way: therefore, in the process of this paper, we call both institutions quality control.

In the field of zinc alloy die casting, with the development of market and products, it is necessary to establish a special quality control professional team. In fact, only the work of professionals who carry out all necessary inspections outside production time can ensure that the quotas and parameters required by customers are met. After these necessary premises, now let's analyze the production stage of zinc alloy die castings by investigating the activities carried out by quality control from time to time.

Quality control stage

As mentioned earlier, quality control is accompanied by components at all stages of their production: it is necessary for the agency to supervise design, sampling and mass production until the components arrive at external suppliers and customers. Therefore, let's explore the activities of this important department at each stage of the project life cycle.

Design

All activities performed by quality control during production begin at this stage. In fact, during the design phase, the quality team will intervene with other departments to evaluate the feasibility of the product. At this stage, the customer specifications are analyzed according to the documents required in the product certification stage: FMEA, control plan, reproducibility analysis of measurement and gauge R & R for evaluation, so as to determine the criticality and gap related to the customer specifications. In addition, it is at this stage that we begin to develop the control table, which is the tool that the quality control team will use in the production stage.

Sampling

In the sampling stage, the inspection required by the customer is carried out on the first batch of products. These checks include dimensional, functional and aesthetic checks, if required. Then, once all the necessary information is obtained, the part of the document required for product approval can be compiled from an industrial perspective. Then send the sample to the customer for timely evaluation. After approval, we} will continue to carry out mass production.

The quality control of sampling is the basis of internal and customer aspects, because the approved products are created at this stage, and the standard process that will be repeated in the mass production stage is illustrated.

Production

In the production process, implement the quality control required by the control table. It is at this stage that the work of the controller and quality team begins. The operator's simple control of the machine, components in production and finished pallets is not always sufficient to ensure that the quality requirements required by the customer are met.

After actively participating in design and sampling, the quality team also plays a role at the beginning of production. In fact, the first molded component is picked up, measured and tested. The operator on the machine then checks each packaging unit, but the team will intervene regularly according to the frequency agreed with the customer or determined internally to sample and perform the tests contained in the control table.

The purpose of regular inspection is not only to verify whether it meets the customer's requirements and does not meet the requirements, but also to monitor the production progress. In fact, entering the collected data into the database allows you to create a production history: a large amount of data allows you to predict any nonconforming products in advance and understand the strategies that have been used to remedy them.

At this stage, the team's activities are based on the control table created during the project start-up phase, which contains all the requirements contained in the Papp. There is a product photo on the card, which indicates the key areas, the type of control to be performed and the tools to be used. It is the data contained in the control table that allows the database to be updated and any unqualified history to be created After describing the stage of quality control and the procedures implemented to ensure that parts meet customer requirements, we analyze the advantages of the system.

Post production stage

Quality control activities will not end with mass production: in fact, external suppliers can take over the process. In this case, they need to control not only the incoming and outgoing materials, but also the production process. In fact, in order to ensure that the parameters required by customers are met, it is necessary to check and ensure the quality of goods and the repeatability of supplier processes. Obviously, all goods handled by the supply chain are controlled, but as mentioned earlier, the whole quality system must be verified and approved in a circular manner according to strict internal or external standards.

Finally, the quality control of zinc alloy die casting manufacturers keeps constant contact and communication with customers. In fact, the two entities exchange information on the quality of supply and the activities required to continue to ensure the expected standards.

benefit

The first obvious advantage is to reduce nonconformities. However, it is important to emphasize that this result is due not only to the accurate inspection carried out by professionals, but also to the work of each stage of the project.

In fact, in the design stage, it is the meeting of different professional knowledge that can create a truly accurate control card, which involves the research and prediction of the process and the construction of the actual production scene. Then, the good design of the control card allows you to perform truly effective inspections during the mass production phase and enter the data into the database, which will enable you to predict the occurrence of nonconformities and implement containment strategies based on the following data and experience..

Cross functional information exchange occurs not only in the design stage, but also in the mass production stage and the final daily meeting of various departments. Thanks to the quality control report, in fact, materials stopped due to non-compliance before treatment have become the subject of reflection involving design, casting and quality. During these meetings, analyze the nonconformities, and analyze the causes, risk factors and implemented preventive or containment measures.

Therefore, the quality control team is the fulcrum around these meetings and the engine to promote all departments to move towards continuous improvement and zero waste. This goal can only be achieved through preventive measures, not actions. Reactive. Finally, the creation and management of the database, as well as the constantly updated control table, operate with awareness, and reflect on the causes of nonconformities and the effectiveness of strategies adopted from time to time. In fact, understanding the past is the best strategy to predict and improve the future.