GB/T 34726-2017 in English

GB/T 34726—2017: In-depth interpretation of the method for determining the corrosion rate of wood preservatives on metals

Analysis of the background of standard formulation and technical evolution

GB/T 34726—2017 is a professional specification for the determination of the corrosion rate of wood preservatives on metals. The standard was proposed by the State Forestry Administration, managed by the National Technical Committee for Timber Standardization, and jointly drafted by many authoritative institutions such as Beijing Forestry University and the Institute of Wood Industry of the Chinese Academy of Forestry.

With the rapid development of wood preservation technology, the types of preservatives are becoming increasingly diversified, and the effects of different preservatives on metal materials are also showing significant differences. Therefore, the formulation of a unified test method is of great significance for evaluating the safety and applicability of preservatives. The technical evolution of this standard is based on the GB/T1.1-2009 rules, combined with actual test needs to ensure the accuracy and repeatability of the measurement results.

Comparison of the determination framework of wood preservatives on metal corrosion rate

Detailed explanation of instruments and materials

Implementation recommendations and precautions

Operation specification:The metal sample must be thoroughly cleaned before the test, and an ethanol-acetone mixed solution must be used to remove grease. Avoid direct contact with your hands when weighing to ensure data accuracy.

Environmental control:The temperature and oscillation rate must be strictly controlled during the test, and it is recommended to operate under constant temperature conditions to reduce variable interference. The control group samples should be processed at the same time as the experimental group to ensure the reliability of the calibration data.

Result analysis: When calculating the corrosion rate, it is recommended to use the formula R=C×(m1−m2)/(A×T×D), and make a comprehensive assessment based on the concentration of the preservative and the properties of the metal material. The calculation results must be rounded to two decimal places and accompanied by a detailed test report.