2026-06-11Views：
Conclusion: The screw air compressor is the power heart of the foundry, and almost all the links that need pneumatic are inseparable from it.
Let's start with what it does in the foundry.
The first is sand cleaning. After the casting comes out of the mold, the surface will stick to sand, which needs to be blown clean with compressed air. The gas consumption in this link is the largest, and the gas is required to be clean, and there is no oil stain to dirty the surface of the casting.
The second is a pneumatic tool. The pneumatic picks, spanners and pneumatic grinders in the foundry are all driven by compressed air. The air output of the screw machine is stable, unlike the piston machine, the tools are easy to use and the work efficiency is high.
The third is pneumatic control. Many of the valve switches in molding machines, box-closing machines, and gating systems are controlled by compressed air. As soon as the gas volume fluctuates, the control is not allowed and the quality of the casting is out of question. Screw machine because it is a continuous operation, gas output is very stable, especially suitable for this need precise control of the occasion.
The fourth is nitrogen production and protective atmosphere. Aluminum alloy smelting when the need for nitrogen as a protective gas, to prevent the oxidation of aluminum liquid. The raw material of the nitrogen making machine is compressed air, so the air volume of the air compressor directly determines how much nitrogen you can produce.
Besides the advantages of water lubricated screw air compressor in the foundry. When the traditional oil injection screw machine works, the oil will mix into the gas. Although the oil and gas separator can stop most of it, there is always a trace of oil running out. These oils fall on the surface of the casting, and problems will occur during subsequent spraying or processing, such as poor adhesion of the paint surface and pores in welding. Water-lubricated screw air compressor works with water instead of oil to participate in compression, water in the inside to play the role of sealing and cooling, the gas discharged completely oil-free. The surface of the casting is clean, and the process behind it is a lot of worry. Moreover, the cooling effect of water is better than that of oil, and the exhaust temperature of the machine is low. In the high temperature environment of the foundry, the overall stability of the water-lubricated screw machine is better, and it is not easy to shut down due to overheating.
After the water is treated by the gas-water separator, the water quality is relatively clean, does not contain oil, and the environmental protection pressure is small. Cooperate with the dryer to remove the moisture, and what comes out is dry and oil-free compressed air, sand blowing does not leave water stains, pneumatic tools do not rust, and control valves do not catch.
Simply put, the screw air compressor provides all the places where gas is needed for the foundry. The water-lubricated screw machine has no oil and the gas discharged is cleaner, which is especially suitable for scenes that require the surface quality of castings.
The normal range of oil output of the micro-oil air compressor is about 1-5ppm of exhaust oil content, usually 3ppm is the common standard value. The following is a detailed explanation of this standard: Unit definition: ppm (parts per million concentration) means the mass ratio of oil in a unit volume of compressed air
Ordinary oil can not replace air compressor oil. Although there are some similarities between oil and air compressor oil in function, such as lubrication, cooling, etc., their application scenarios and characteristics are not exactly the same. The following are several key reasons: use difference: oil main
Is the air compressor suitable for long-time work? Professional analysis and optimization suggestions In industrial production, as the core power equipment, the stability of the air compressor is directly related to the continuity and efficiency of the production line. The general concern of users is: air compressor is
Air compressors are widely used in the pharmaceutical industry, and the following are their main uses: The high-pressure air generated by air compressors is a necessary condition for the stable operation of pharmaceutical equipment. For example, dry air is used to transport pharmaceutical raw materials, compressed air is used to drive pharmaceutical equipment, and
To calculate how many cubic meters of compressed air a 37kw air compressor produces per minute, we need to know the air compressor exhaust volume, which is usually given in cubic meters per minute (m & sup3;/min). However, between the power of the air compressor (kw) and its displacement and
In industrial production, in order to meet the large-scale gas demand or improve the reliability of the system, two or more air compression systems are often used in parallel operation. The core principle is to achieve multiple devices to work together through intelligent control, the following from the technical logic, control strategy and energy efficiency.
There is no absolute answer to the question of whether the compressor is oil-free or oil-free, because it depends on the specific application scenario and needs. The following are the advantages and disadvantages of oil-free and oil-free compressors for your reference: Advantages of oil-free compressors: Environmental protection: Because they are not used
The frequency of replacement of precision filter elements depends on a number of factors, including filter type, operating environment and quality. Generally speaking, under normal conditions, it is recommended to check and replace the filter element every 3 to 6 months. However, if the water quality is poor or the air pollution is severe
When starting the air compression system, there are different views and practical methods on whether to turn on the dryer or the air compressor first. This mainly depends on the type of dryer used and the specific configuration of the air compression system. General conditions for freeze drying
Air compressor has many applications in mines, and it plays an important role in ensuring safe and efficient production in mines. The following are the main applications of air compressors in mines: to provide power for various equipment: in the process of mining, air compressors can be shearers
2018 Granklin Group. All rights reserved 沪ICP备18000439号-2
