After the reform and opening up, the development of domestic textile test
ing instruments (equipment) has basically been able to meet the requirements of the textile industry for the performance testing of textile raw materials, semi-finished products and finished products. A batch of high-tech testing instruments (equipment) have been put on the market one after another, and some models have been Or basically close to the international advanced level, providing a larger space for the selection of the domestic textile industry. In order to meet the needs of product quality inspection, many textile enterprises have strengthened the update of product quality inspection methods and the replacement of testing instruments (equipment), especially in the process of technological transformation of the enterprise, so as to maximize the quality inspection data of the enterprise. Meet the requirements of timeliness, accuracy and completeness, laying a good foundation for enterprise development and economic growth. However, some companies often only consider its technical performance and cost-effectiveness in the selection of test equipment (equipment), and rarely or at all consider the maintenance cost of the test equipment (equipment) throughout the life cycle and the selection and procurement process. A series of technical problems to be solved in China. Therefore, it is necessary to talk about several issues that enterprises should pay attention to in the process of purchasing test instruments (equipment). l The quality control contract of the purchase contract is an official document with legal effect reached by the buyer and the seller for the realization of a certain economic purpose. It is a behavioral rule that both parties abide by in all economic activities. It is also a legal means of quality control. In the event of a quality accident of testing equipment (equipment) and economic disputes, the contract is an important basis for ruling and compensation. The contract should specify the source of the purchased testing equipment (equipment), the name of the manufacturer, model specifications, quantity, and technology. Parameters, quality assurance, packaging and transportation requirements, delivery deadlines, and their respective liability for compensation in case of breach of contract, etc. 2 The out-of-the-box inspection of test equipment (equipment) follows the development of enterprise productivity and the progress of science and technology. Testing equipment (equipment) products are becoming increasingly diversified, and their performance structures are becoming more and more complex. Sometimes it is difficult for testing equipment (equipment) users to judge their authenticity by their own ability, especially for packaged products, it is even harder to know its truth. In fact, the product identification and related quality certificates of the test equipment (equipment) have become one of the important channels for users to obtain the product quality information. Test instrument (equipment) name, model specification, measurement range, accuracy grade, production date, product number, product instruction manual, schematic diagram, assembly drawing, mechanical sketch, manufacturing standard number of this type of testing instrument (equipment), Production license mark and number, product quality inspection certificate, manufacturer quality certification mark, manufacturer name and detailed address, etc. This series of information is extremely useful in the future use and maintenance of test equipment (equipment) and when users establish technical files for them. 3 The performance and function of testing equipment (equipment) With the continuous application of new technologies, new processes, and new materials in the textile industry, newer and higher requirements have been put forward for textile testing content and testing methods. The performance and function of the test instrument (equipment) determine its cost performance, and more importantly, whether it can fully and accurately reflect the technical indicators of the tested object. This is particularly important when comparing similar test instruments (equipment) produced by different manufacturers. The testing of yarn strength and elongation is an important technical index for evaluating yarn quality. my country issued and implemented the 'GB/T398-93' standard in 1993. As a result, the textile industry urgently needs to adopt an electronic single yarn strength tester in the detection of yarn strength and elongation performance. However, the domestically made automatic single yarn strength tester was due to technical reasons at that time. As a result, the reliability of the test quality of the whole machine and the credibility of the test results cannot meet the practical requirements. For this reason, quite a few textile instrument
manufacturers have developed a variety of semi-automatic single yarn strength meters for users to choose from. So how to choose the applicable model among the many semi-automatic single-yarn strength testers is particularly important. As a user, we must first know what technical indicators need to be obtained to guide production through single yarn tensile performance testing, and which type of semi-automatic single yarn strength tester can provide comprehensive yarn tensile performance indicators. The semi-automatic single yarn strength tester developed by Standard Group (Hong Kong) Co., Ltd. uses a single-chip computer + PC to control the two-way control. When a single-chip computer is used to control the yarn stretching, it depends on the computer to complete the detection, data collection, calculation of technical indicators, result statistics and Print out. The function is configured as a single yarn strength test method, and the LCD operation panel is used as the man-machine interface. It displays a large amount of information, can be recorded and browsed, and provides 12 test technical indicators. The data output method is in table format, printing single test value and batch statistical value, or displaying by LCD screen, can delete invalid data arbitrarily, has the function of power-off data saving, and can copy data report arbitrarily before power-off. After the semi-automatic single yarn strength tester adopts PC technology, the test function adds constant elongation test, constant load test, elastic recovery rate test, plastic deformation rate test and other testing methods on the basis of the original constant speed stretching and timing breaking.
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