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Introduction
1. Folding hinges are widely used in various fields, such as aerospace, automotive, and furniture industries.
2. The performance of folding hinges is closely related to their lubrication and friction characteristics.
3. The lubrication and friction characteristics of folding hinges directly affect their service life, reliability, and efficiency.
4. Therefore, it is necessary to conduct research on the lubrication and friction characteristics of folding hinges to improve their performance.
Experimental Methods
1. The folding hinges were made of stainless steel and had a thickness of 1mm.
2. The lubricants used in the experiments were silicone oil, mineral oil, and grease.
3. The friction tests were conducted using a universal friction tester with a load range of 0-50N and a sliding speed range of 0-200mm/s.
4. The friction coefficients were measured by a digital force gauge and a displacement sensor.
5. The wear tests were conducted using a reciprocating wear tester with a load of 10N and a frequency of 1Hz.
6. The wear tracks were observed by a scanning electron microscope (SEM).
7. The experiments were repeated three times to ensure the accuracy of the results.
Results and Discussion
1. The friction coefficients of folding hinges lubricated with silicone oil, mineral oil, and grease were compared.
2. The results showed that the friction coefficient of folding hinges lubricated with silicone oil was the lowest, followed by mineral oil and grease.
3. The wear rates of folding hinges lubricated with silicone oil, mineral oil, and grease were compared.
4. The results showed that the wear rate of folding hinges lubricated with silicone oil was the lowest, followed by mineral oil and grease.
5. The SEM images of the wear tracks of folding hinges lubricated with silicone oil, mineral oil, and grease were compared.
6. The results showed that the wear tracks of folding hinges lubricated with silicone oil were the smoothest, followed by mineral oil and grease.
7. The lubrication mechanism of folding hinges was analyzed based on the experimental results.