control product quality - a mandatory component of any production process, which is aimed at the detection of a marriage or the finished product defects and verification process of its manufacture.
Quality control methods are applied at all stages of production, starting with the test materials and raw materials and ending with the control of conformity of the finished product specifications.This process involves product testing when ready its individual parts.
Testing within a particular enterprise is carried out to ensure the quality of the service center.The functions of this control include the following:
- the development of quality indicators for each product;
- accepted methods of quality control and test procedures;
- detailed analysis of the claims;
- to identify possible causes of marriage and measures to eliminate it.
To perform this procedure, it is important to have indicators of the quality of products, means and methods of testing, appliances for testing the results of the analysis of complaints, the possible causes of defects.
Currently, there are many ways to check.We consider statistical methods for quality control.
main purpose of the method of statistical control is the elimination of any accidental changes in the product quality.Such changes may be caused by specific factors that must be identified and corrected.
Sampling is used when necessary decision about the quality of the product.This happens usually when taking the big party on the basis of a certain number of test samples from the batch.Most of these methods of control carried out at the reception of components or products from suppliers.They allow you to reduce material cost control and apply when the product is necessary when checking it out.
Quality control methods also involve consideration of the technological process used in manufacturing and in services.This control is to detect problems with the release of products related to the unstable quality.This production process has to be corrected.
allocated and other methods of quality control:
1. histogram method - an effective tool for information processing, designed for use in the production, as well as to explore the possibilities of the process.
2. The method of separation, which is based on reliable information.It is used for specific data, and the establishment of cause-and-effect relationships.
3. The method of control charts.Such checklists reflect changes in process performance over time.They note the range of compulsory dispersal, which lies within the lower and upper limit.This method allows very fast track when it started to drift parameters for a particular indicator in the process.The goal - of preventive measures and prevent the marriage of the finished product.
As mentioned above, checklists are used when necessary to carry out quality control in the manufacturing process is.They entered all the information about the process.Options for recording may be different.Selection thereof depends on the type of product and the purpose of its manufacture.
Thus, the main goal pursued by the methods of quality control - detection of problems, determining at what stage of production has gone out of control and take the necessary steps to remedy the defect and error process.
