What is the testing standard for No. 46 anti-wear hydraulic oil?
3 Answers
46 anti-wear hydraulic oil testing standard viscosity is plus or minus 10%, the acid value is generally increased by 40% on the original basis for oil change. The following is the relevant introduction of hydraulic oil: 1. Characteristics: It has good anti-foaming performance, which makes the power transmission stable and avoids the accelerated oxidation of hydraulic oil. It has good rust resistance and oxidation stability, is not easy to oxidize and deteriorate, and has a long service life. The viscosity is suitable and the viscosity-temperature performance is good, which can accurately and sensitively transmit power and ensure the normal lubrication of hydraulic components. 2. Function: Hydraulic oil is the hydraulic medium used in the hydraulic system that uses liquid pressure energy, which plays the role of energy transmission, anti-wear, system lubrication, anti-corrosion, anti-rust, and cooling in the hydraulic system.
The testing standards for No. 46 anti-wear hydraulic oil are quite meticulous. In my experience working with various hydraulic equipment, the key parameters typically include viscosity, anti-wear performance, and oxidation stability. International standards like ISO 11158 specify detailed tests - viscosity must remain around 46 with minimal deviation, wear resistance is evaluated using four-ball or Falex tests to assess wear volume and prevent excessive hydraulic pump damage. Oxidation tests ensure the oil doesn't acidify under high temperatures, protecting internal systems. There's also the demulsibility test requiring quick oil-water separation to prevent corrosion and clogging. From practical maintenance experience, I've observed that substandard oil leads to rapid efficiency decline, increased noise, and even system failures. Therefore, I recommend regular oil sample testing and timely oil replacement according to standards to maintain smooth equipment operation.
The standards for testing No. 46 anti-wear hydraulic oil primarily involve viscosity, anti-wear properties, and cleanliness. Our team often refers to ASTM D6158 or ISO standards to test the viscosity index, ensuring the oil neither thickens nor thins excessively with temperature changes. Anti-wear performance is evaluated through gear tests, such as the FZG method, to determine the acceptable wear rate. Cleanliness is checked using the filter mesh method to measure impurity content. Foam characteristics testing is also crucial to prevent bubbles from affecting system operation. Additionally, demulsibility tests measure oil-water separation time, typically requiring separation within 30 seconds to be considered acceptable. These standards ensure long-term protection of the oil. I insist on regular oil quality testing during equipment maintenance, as hydraulic valve issues can be troublesome otherwise. When selecting oil, checking for certification marks on the product label is the most reliable approach.
