Daily maintenance of excavator hydraulic cylinders
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According to the latest report released by the Petrochemical Industry Association, currently the Chinese petrochemical industry is facing a sustained downturn in the market. The utilization rate of some industries is still low and idle. The investment in some overcapacity industries has grown too fast, and the protectionism of international trade has risen. The industry export situation is grim. And other issues.
According to the report, although the output of major petrochemical products increased in August, demand continued to rise, and prices of some products continued to rise, but the overall downturn in the petrochemical market did not change significantly. The decline in the overall level of prices continued to expand, and the effective market demand remained relatively stable. insufficient.
According to figures released by the National Bureau of Statistics, the price for the same month in the previous year was 100, and the total price index for more than 1,000 major petrochemical products was 81.33, a decrease of 1.2 percentage points from the previous month. The price index of chemical products was 83.5, a decrease of 0.7 percentage points from the previous month and continued to fall.
The utilization rate of some industries is still low. In August, the operating rate of ethylene plants was approximately 88%, the operating rate of polyvinyl chloride units was approximately 59.6%, the operating rate of methanol plants was approximately 47.1%, and the operating rate of the refining industry was approximately 87.8%.
In addition, although the output of some industries is increasing, the inventory also increases. As of the end of July, the nitrogenous fertilizer industry's production enterprises had 1838,000 tons of urea inventories, an increase of 143.8% year-on-year; the inventory of diammonium phosphates in the phosphate fertilizer industry reached a record high of 1.81 million tons, an increase of 116.8% year-on-year; The inventory of other products, such as two alkalis, is also high.
In the first 8 months, the investment in phosphate fertilizer and compound fertilizer industry increased by 85.4% and 65% respectively year-on-year; the investment in the paint industry rose by 39%; the pesticide industry increased by 30.1%; the rubber product industry increased by 31.2%. In addition, it is understood that the pace of energy expansion in the coal chemical, soda ash, chlor-alkali and other industries is still accelerating.
The report believes that the excessive growth of investment in some overcapacity industries will undoubtedly bring serious pressure on the industrial restructuring of the industry and will also slow the recovery of the industry.
The hydraulic cylinder of an excavator is one of the important hydraulic components responsible for driving and controlling mechanical movements. In order to ensure the normal use of hydraulic cylinders and extend their service life, daily maintenance is necessary.
1. Regularly clean the hydraulic cylinder: During use, the hydraulic cylinder will be attacked by various pollutants, such as dust, sediment, oil stains, etc. These pollutants can affect the working efficiency and lifespan of the hydraulic cylinder. Therefore, it is necessary to regularly clean the hydraulic cylinder.
2. Regular inspection of seals: The seals of hydraulic cylinders are key components to ensure their normal operation. If the seals are damaged or worn, it can lead to oil leakage or unstable operation of the hydraulic cylinder. Therefore, it is necessary to regularly inspect the sealing components of the hydraulic cylinder and replace them in a timely manner if there is any damage or wear.
3. Regular inspection of hydraulic oil: The operation of hydraulic cylinders requires the support of hydraulic oil, so the quality of hydraulic oil has an important impact on the working effect of hydraulic cylinders. Regularly check the quality of hydraulic oil, and replace it promptly if there is contamination or deterioration.
4. Regularly check the hydraulic pipeline: The hydraulic pipeline is the blood vessel of the hydraulic cylinder. If there is oil leakage or damage to the pipeline, it can cause the hydraulic cylinder to not work properly. Therefore, it is necessary to regularly inspect the hydraulic pipelines and promptly repair or replace them if there is any oil leakage or damage.
5. Regularly lubricate the hydraulic cylinder: The piston rod and piston ring of the hydraulic cylinder need to be lubricated to reduce wear and friction. Therefore, it is necessary to regularly apply lubricating oil to ensure the normal operation of the hydraulic cylinder.
In short, the daily maintenance of excavator hydraulic cylinders is very important, which can extend their service life and improve work efficiency. Regular cleaning of hydraulic cylinders, inspection of seals, hydraulic oil, hydraulic pipelines, and lubrication of hydraulic cylinders are required.
Petrochemical Industry Association: The recovery of the industry is positive but it is still unstable
According to the analysis report of the China Petroleum and Chemical Industry Association, the current upward trend in the economic performance of China's oil and chemical industries has become increasingly apparent, but it still faces more challenges and difficulties. The momentum for recovery is still unstable, unconsolidated, and unbalanced.