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Standards Development
This document specifies the test method for strength of adhesion of Bead wire (round & shaped) to vulcanized rubber compounds. The method applies to, but is not limited to, wire made from brass, bronze, or zinc coated steel wire.
The rapid development of the global automobile industry and transportation industry has greatly promoted the development of the tire industry. In order to adapt to the development of the tire industry, the bead wire industry has also undergone tremendous changes, and newer and higher requirements have been put forward for the accuracy and precision of bead wire adhesion testing method. Bead wire is an important reinforce material for tyre, which can effect on tyre safety and service life. Bead wire maker and tyre maker need an international standard to be referred, especially when there is international business. At present, the going revision of ISO16650 for bead wire only briefly describes the adhesion test mould without detail test procedure, and the most popular used ASTM D1871-04 (Standard Test Method for adhesion between Tire Bead Wire and rubber) was updated in 2004, which failed to keep pace with the development of industry and could not meet the constantly updated product specifications and customer needs. The lack of international standards for bead wire adhesion test methods and the differences in reference standards in various countries lead to the inability to choose general international standards for the implementation of bead wire in production and acceptance, and the supply and demand sides must attach more additional terms to carry out product acceptance and trade activities in the business trade, which is not convenient for technical communication and increases the cost of operation and trade. At the same time, due to the lack of general international standards, there are great differences in the definition of test items, the description of test methods and the judgment of test results in different countries. To sum up, it is recommended to formulate an international standard for "Testing Method for Bead Wire Part 2: adhesion test ", with the aim of promoting the use of consistent and accurate adhesion test method for the inspection of bead wire products in international trade in different countries.
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