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Anti-rust properties The extreme pressure anti-wear agents in gear oils are the main types of agents, and there are many types. The extreme pressure anti-wear agent is also a compound with relatively high chemical activity, which is easily adsorbed by the metal surface (tooth surface) to produce a chemical (or physical) reaction film, thereby preventing metal friction or seizure. In fact, the reaction film produced by the extreme pressure antiwear agent and the metal surface is a rust corrosion of the metal. Therefore, it is necessary to introduce a corrosion inhibitor to create a competitive adsorption between the surface active material and the extreme pressure anti-wear agent on the metal surface to achieve a certain equilibrium state. The sieve sander has certain extreme pressure anti-wear. Sex, without causing excessive rust (rust). The matching of extreme pressure anti-wear and corrosion inhibitors is one of the cores of gear oil formulation technology.
The use of a rust inhibitor alone does not work well in this formulation. The amount of rust inhibitor for No. 2 oil sample reached 0.6, but the corrosion was not significantly improved. On the contrary, the increase of the amount of rust inhibitor will adversely affect the extreme pressure and abrasion resistance of the oil; in the oil sample No. 3-6, the combination of antioxidant and rust inhibitor improves the rust resistance of the oil. And the anti-rust ability is improved with the increase of the amount of antioxidants and rust inhibitors; for the formulation of the whole oil, the amount of anti-rust agent and antioxidant should be from the anti-rust effect and the extreme pressure anti-wear agent A balanced study of the composite effect. In the sense of oxidation resistance, the change in the performance of various aspects of the oil, the deterioration of the quality during use, is caused by the oxidation of the oil. The oxidation resistance of vehicle gear oils was measured using the CRCL60 bench test. Antioxidants have a better effect on improving the oxidation stability of oils, and as the amount increases, the viscosity changes before and after oxidation of oils decrease.
The oxidation resistance of vehicle gear oil is measured by the CRCL60 bench test.
There are various types of waist and abdominal fitness equipment, including but not limited to the following:
1. Slimming machine: This is a fitness equipment that uses vibration to help reduce abdominal fat, suitable for people who want to engage in aerobic exercise at home. The fat slinger uses vibration and heating technology to help burn fat and achieve the effect of reducing fat and shaping.
2. Health Wheel: A health wheel is a device used to exercise abdominal muscles. By using the health wheel to push and compress, it can effectively exercise the core muscles of the abdomen, helping to enhance the strength and stability of the abdominal muscles.
3. Sit up assist: This is an assistive device that helps with sit ups, reducing pressure on the lumbar spine while providing stable support, suitable for beginners and those who need to strengthen abdominal training.
4. Abdominal rolling equipment: Abdominal rolling equipment is specifically designed to exercise abdominal muscles, and through different movements and resistance settings, it can comprehensively exercise various parts of the abdomen.
5. Pedal Puller: This is a multifunctional fitness equipment that can be used for stretching training, helping to exercise abdominal, back, and upper limb muscles, as well as assisting with aerobic exercise.
6. Roman chair: Roman chairs are mainly used to exercise the muscles of the waist and back, including compound training of the abdomen and back, suitable for people who want to comprehensively exercise the muscles of the waist and abdomen.
7. Hip bridge machine: This is a specialized equipment used to exercise the muscles of the buttocks and abdomen. By performing hip bridge movements, it can effectively exercise the buttocks and core muscle groups.
Choosing appropriate waist and abdominal fitness equipment is crucial for improving exercise effectiveness and preventing sports injuries. Different equipment is suitable for different populations and exercise goals, so the selection needs to be based on individual physical condition and exercise needs.