Meiirbek Sayat, Orynbaeva U.A.

M. Kh. Dulaty Taraz State University

Theoretical and practical aspects of quality control spinning

The essence of quality control. At all stages of production, as well as its operation an essential element of quality control is to control. The control is not only necessary for a reliable evaluation of enterprise performance and its divisions, but also serves as the main informative source used to make decisions about the need for and the degree of correction quality management system. Improving the forms of control determines the accuracy and timeliness of the information is received. The organizational forms and means of quality control are extremely diverse, and the main task of modern control should be considered a warning of occurrence of defective products [1-4].

It is important to create a system of quality control at these stages of the product life cycle in order to avoid the appearance of defective, poor quality products, as well as to ensure the stability of product quality indicators. The essence of any control can be reduced to obtain information about the actual state of an object, its attributes and indicators (primary information); comparing the initial information with the previously established requirements and standards, i.e. determination of compliance or non-compliance evidence expected (secondary information).

Engineering controls include: quality control of raw materials entering the undertaking from suppliers; quality control, prevention, identification and registration of marriage; determination of the causes of marriage and the development of measures to address them; the development and implementation of measures to improve product quality; control equipment and technological equipment.

The basic principles of rational organization of technical control in spinning mills are preventing the emergence of marriage. It ensures the correct choice of appropriate species and technical control facilities; the accuracy and objectivity of determining the quality of the product (quantity, types, causes and perpetrators). It provides the appropriate use of measuring instruments, qualified personnel, carrying out the control, selection of controls; maximum engagement quality control products manufacturers. It increases their ownership, reduces the cost of control operations.

The control system is a set of controls, methods of performing control operations and performers interacting with the object of control by the rules established by the documentation. There are two types of requirements for the yarn: technological and operational. Technological requirements determine the ability of a good yarn processed in the development of fabrics and other products, and performance - have certain properties in the product (cloth) to wear.

The yarn must satisfy the following requirements: to have a given linear density and with minimum variations in length be flat, as in both small and large segments. Otherwise, reduced quality of fabrics, worsening the process of their production overruns or cotton; have given strength and minimal strength rough; have a predetermined elongation and tensile stiffness with minimal deviation from these figures in length. Elongation, especially elastic and rigidity largely determine the structure and performance of the fabric; have a predetermined twist and be uniform in twist. Due to the fact that many of the properties depend on its yarn twist, compliance with this requirement is of great importance; be clean, with a minimum of trash and appearance defects. Failure is to do so results in increased yarn breakage, during its processing and reduce product quality. It must be borne in mind that the cost of raw yarn in the cost is about 70-75% and the optimum choice of raw materials to produce the desired yarn quality is of great importance.

Yarn is a complete product of spinning production and therefore its quality control as opposed to semi-control is more important. Every kind of yarn has to meet certain requirements, which are recorded in the state standards or technical conditions. However, the yarn in its formulation for various reasons, there are defects that reduce its quality. To assess the quality of yarn special methods are developed on yarn quality which is assessed by physical and mechanical characteristics and appearance defects. In addition, the estimated quality of the winding yarns into a package - cob, bobbin.

One of the main solution to the problem of improvement of quality of production is the creation of the textile enterprise process-oriented quality management system (QMS) based on ISO requirements. A special role in the development of the QMS of the enterprise organization is given a technical process control and product quality control, which should be based on modern and constantly developing methodological approaches, as well as new methods and means of supplying them with information. In this case the key QMS development becomes the introduction of the process approach, including evaluation of the technical level of control. In recent years, improvement of the production (including spinning) was carried out in the direction of the development of manufacturing processes, where little it has changed methodology of the organization of technical control. However, from the technical inspection organizations greatly depends on the quality of products. Thus, the solution of scientific problems is related to the improvement of methods and organizational forms of technical control, today it is an urgent task.

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