5775 标准查询与下载

DIN 51345:1986 耐火液压液体和金属的相容性试验

The test procedure established by this standard is used for testing the action of fire resistant fluids, i.e. emulsion of type HFAE according to DIN 24320, on metallic materials. For the test emulsion is prepared from the concentrate and test water in accordance with DIN 24320 in a ratio prescribed by the supplier. Then test strips are sunmerged in the emulsion for 28 days at a temperature of 35 ? After the test period the change in mass of the test strips is determined. Also deposits on the test strips, discolouring of their surfaces and any changes in the appearance of the emulsion are visually assessed.#,,#

Testing the compatibility of fire-resistant hydraulic fluids with metals

DIN 51353:1985 绝缘油的检验.对腐蚀性硫的检测.银带检验

The silver strip test established by this standard is used for the determination of corrosive sulphur in electrical insulating oils according to DIN VDE 0370 part 1 and part 2. For the testing a silver strip is immersed for 18 h at a temperature of 100 ?in a sample of the insulating oil to be tested. The discolouring of the surface of the silver strip is an indicating for the amount of sulphur in the oil.

Testing of insulating oils; detection of corrosive sulfur; silber strip test