The ratio of rolling resistance of automobile tires was held in Beijing before the laboratory work conference. The meeting identified the 2013-2014 annual comparison of automotive tires rolling resistance test, and the National Rubber Tire Quality Supervision and Inspection Center, as the only third-party testing agency, obtained certificates for the comparison of tires for cars and light trucks and truck tires. . Due to its own characteristics, the tire rolling resistance tester differs greatly in the test results between different machines and cannot evaluate the tire rolling resistance level. In order to solve this problem, the European Union adopted the method of setting up a reference laboratory and carried out tests in nine different laboratories with the same batch of tires. The average value of nine test results was taken as the reference value, and nine laboratories passed a certain conversion relationship. The respective results are converted so that the results can be directly compared. The China Measurement Association Chemical Control Sub-Council learns from the European Union's methodology and, in the light of China's actual conditions, established a domestic tire rolling resistance reference laboratory network and issued certificates and plaques to the first comparison laboratory. The National Tire Quality Inspection Center also has a complete tire rolling resistance test method and data evaluation system, which can provide test data in accordance with EU limits and label regulations, and can provide authoritative test results in accordance with national standards and methods. The establishment of the comparison laboratory provides an effective way for the establishment of data correlation between domestic tire test chambers, and also paves the way for the study of domestic tire rolling resistance performance grading methods. Zinc Alloy Industrial Plane Lock,Electrical Panel Lock,Cabinet Plane Lock,Control Box Flat Push Button Panel Lock NINGBO DAIKE INTELLIGENT TECHNOLOGY CO.,LTD , https://www.dakerhardware.com
China builds tires rolling resistance comparison laboratory