Uniform design features uniform design to evenly distribute the experimental points, so that more information can be obtained with fewer experimental points. Compared with the previous preferred method and orthogonal design method, the following advantages are obtained: (1) Uniform distribution and good representativeness (2) Each factor is only tested once per level, and the number is equal to the number of levels; (3) the number of trials increases only by the number of levels; (4) the data is processed by the quantitative equation given by the computer. Interaction between factors 1.2 Uniform design Regression equation significance test The experiment using uniform design can be used to obtain the equation F ratio (F = sum of squared A residual sum of squares) and correlation coefficient R (or complex). Correlation coefficient Ra) and significant level p3 equation significance test method.

Research on DAG32 compressor oil. DAG32 Compressor Oil Quality Index Rotary compressor has been widely used due to its advantages of low power consumption, high efficiency, small size, low vibration, low noise and stable exhaust. With the development of air compressor design and manufacturing, it is gradually replacing the traditional reciprocating air compressor. Rotary compressor oil should have good quality indicators of good oxidation stability, rust resistance, emulsification resistance and foam resistance. The key indicator of oil is the antioxidant properties of the oil. The DAG bench test mainly investigates the acid value and viscosity change of the oil during the experiment. The quality of these two indicators mainly depends on the antioxidant performance of the oil. Therefore, screening for suitable antioxidants is the key to the development of DAG32 oils.

The preliminary evaluation of several low-temperature antioxidants The Nanyang base oil produced by the old three sets of production processes has great difficulties in producing high-performance DAG compressor oil. Therefore, in the research of DAG, the screening of antioxidants becomes one. Very important work. Several conventional low temperature antioxidants were initially selected to investigate their antioxidant properties and composite effects. Due to the large number of experimental factors and the poor performance of Nanyang base oil, it is required to add a large amount of antioxidants. At the same time, in order to determine the application effect of uniform experimental design in the anti-oxidation performance of oil products, we have deliberately arranged more experiments.