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Novel method for improving fatigue performance of magnesium alloy lubricating oil

A fatigue performance, magnesium alloy technology, applied in the petroleum industry, lubricating compositions, additives, etc., can solve problems such as limited application and limited structural strengthening, and achieve good results, avoid material damage, and refine grains.

Inactive Publication Date: 2017-09-05
CHONGQING TECH & BUSINESS UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned nanomaterials as lubricating oil additives are more expensive, so the current application is very limited
At the same time, purely using nano-materials as lubricating oil additives to repair the surface of materials is mainly aimed at strengthening the performance of the material surface, and has a limited effect on the strengthening of the internal structure of the material.

Method used

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  • Novel method for improving fatigue performance of magnesium alloy lubricating oil

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment

[0033] 1) The magnesium alloy is prepared into a sample that is easy to be clamped by the fatigue testing machine. Using the fatigue testing machine, the above sample is preloaded with a tension-compression cyclic stress load lower than the yield limit at a room temperature of 25 ° C. After the preloading is completed, , the sample is placed in lubricating oil containing nano-scale blast furnace titanium slag as an additive for immersion treatment, after soaking for 2 hours, the sample is taken out, and the surface of the sample is degreased to complete the treatment of the magnesium alloy sample. Among them, the magnesium alloy is a cast magnesium alloy; the surface roughness of the magnesium alloy sample is 0.8; the particle size of the nanoscale blast furnace titanium slag is 100nm; the lubricating oil used for immersion is mineral lubricating oil, and it is new oil, with an acid value of 0.1mgKOH / g.

[0034] 2) In the above step 1), the maximum stress in the tension-compr...

no. 2 Embodiment

[0039] 1) The magnesium alloy is prepared into a sample that is easy to be clamped by the fatigue testing machine. Using the fatigue testing machine, the above sample is preloaded with a tension-compression cyclic stress load lower than the yield limit at a room temperature of 25°C. After the preloading is completed, , the sample is placed in lubricating oil containing nano-scale blast furnace titanium slag as an additive for soaking treatment, after soaking for 3 hours, the sample is taken out, and the surface of the sample is degreased to complete the treatment of the magnesium alloy sample. Among them, the magnesium alloy is a cast magnesium alloy; the surface roughness of the magnesium alloy sample is 0.5; the particle size of the nanoscale blast furnace titanium slag is 50nm; the lubricating oil used for immersion is semi-synthetic lubricating oil, and it is new oil with an acid value of 0.08 mgKOH / g.

[0040] 2) In the above step 1), the maximum stress in the tension-com...

no. 3 Embodiment

[0045] 1) The magnesium alloy is prepared into a sample that is easy to be clamped by the fatigue testing machine. Using the fatigue testing machine, the above sample is preloaded with a tension-compression cyclic stress load lower than the yield limit at a room temperature of 25°C. After the preloading is completed, , the sample is placed in lubricating oil containing nano-scale blast furnace titanium slag as an additive for immersion treatment, after soaking for 4 hours, the sample is taken out, and the surface of the sample is degreased to complete the treatment of the magnesium alloy sample. Among them, the magnesium alloy is a cast magnesium alloy; the surface roughness of the magnesium alloy sample is 0.2; the particle size of the nanoscale blast furnace titanium slag is 10nm; the lubricating oil used for immersion is fully synthetic lubricating oil, and it is new oil, with an acid value of 0.06 mgKOH / g.

[0046] 2) In the above step 1), the maximum stress in the tension...

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Abstract

The invention discloses a novel method for improving the fatigue performance of magnesium alloy lubricating oil. The novel method for improving the fatigue performance of the magnesium alloy lubricating oil is characterized by comprising the steps that magnesium alloy is made into a sample which can be clamped easily by the fatigue tester; the tension-compression cyclic stress load under the yield limit is preloaded on the sample through the fatigue tester at the room temperature of 25 DEG C, and after preloading, the sample is placed in lubricating oil containing nanometer grade blast furnace titanium slag as an additive; and after soaking for 2-4 hours, the sample is removed and the surface of the sample is degreased, and treatment of the magnesium alloy sample is finished. According to the novel method for improving the fatigue performance of the magnesium alloy lubricating oil, the technique that low stress cyclic preloading is combined with surface repairing of nanometer materials is adopted, the magnesium alloy grains can be refined, the fatigue strength of the material is improved, and defects or uneven areas of the surface of the magnesium alloy material are repaired through the titanium slag of nanometer grade blast furnace so that the corrosion of magnesium alloy material under the condition of lubricating oil can be effectively reduced or prevented, and the fatigue performance of magnesium alloy material under the condition of lubricating oil is greatly improved.

Description

technical field [0001] This patent belongs to the technical field of magnesium alloy material properties, and is a new method aimed at improving the fatigue performance of magnesium alloy lubricating oil working conditions. Background technique [0002] In recent years, thanks to my country's gradual emphasis on automobile fuel consumption, emissions and automobile lightweight, magnesium alloys have been widely used in the automotive field and are regarded as the most promising metal materials in the automotive industry. According to the forming process, magnesium alloys are divided into cast magnesium alloys and wrought magnesium alloys. The application components cover multiple systems such as power systems, transmission systems, and machine parts. Research on how to improve the fatigue performance of magnesium alloys is currently a hot spot in the research of magnesium alloy materials. and focus. [0003] At present, the research on enhancing the fatigue performance of m...

Claims

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Application Information

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IPC IPC(8): C22F1/06C10M125/00C10N30/12
CPCC10M125/00C10N2030/12C22F1/06
Inventor 陈凌张贤明欧阳平刘先斌贾艳艳
Owner CHONGQING TECH & BUSINESS UNIV
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