Hydraulic press is a kind of mechanical equipment that uses liquid to transfer pressure, the following is a detailed introduction to its basic knowledge and application areas:
1. The basics
1. Definition: Hydraulic press is a liquid as a working medium, according to Pascal's principle made for the transfer of energy to achieve a variety of process machines. It uses the principle of equal pressure everywhere in the confined liquid, by changing the pressure of the liquid to transfer energy and do work.
2. Composition: Hydraulic press is generally composed of this machine (host), power system and hydraulic control system consists of three parts. Among them, the machine is the main part of the hydraulic press, the power system to provide hydraulic energy, hydraulic control system is responsible for controlling and regulating the transmission and distribution of hydraulic energy.
3. Working principle: the working principle of the hydraulic press is that the oil pump delivers the hydraulic oil to the integrated cartridge valve block, and distributes the hydraulic oil to the upper or lower chamber of the cylinder through various check valves and relief valves, which makes the cylinder move under the action of high-pressure oil. Liquids follow Pascal's law when transmitting pressure in a closed container.
4. Classification: hydraulic presses can be divided into various types according to different classification criteria. For example, according to the transfer of pressure to the type of liquid, there are two major types of hydraulic presses and hydraulic presses; according to the structure of the type of points, there are double-column, four-column, eight-column, welded frames and multi-layer steel winding frame and other types; in accordance with the use of points, there is a variety of types of metal forming, bending, stretching, punching, powder moulding, pressing, extrusion and so on.
5. Performance parameters: the performance parameters of the hydraulic press mainly include the nominal working force (or nominal tonnage), working pressure, working speed, working stroke and so on. These parameters determine the processing capacity of the hydraulic press and the scope of application.
2. Application areas
1. Metal processing: hydraulic press has a wide range of applications in the field of metal processing, such as stainless steel plate extrusion, bending, deep drawing and cold press forming of metal parts. In addition, it can also be used for the pressing of powder metallurgy products and correction of metal parts.
2. Plastics processing: in the field of plastics processing, hydraulic presses are commonly used in plastic products, such as plastic cups, plastic boxes and other production of press moulding operations.
3. Shipbuilding and ocean engineering: Hydraulic presses have a wide range of applications in the field of shipbuilding, and can be used for cutting, bending and moulding of steel plates and other processes. At the same time, it is also used in marine engineering for the processing and assembly work of large metal components.
4. Mining and metallurgy: in the field of mining, hydraulic press is used for drilling, blasting and mining processes. In the metallurgical field, it is often used in the manufacture and maintenance of metal smelting equipment.
5. Aerospace: In the aerospace field, hydraulic presses are widely used in the control and adjustment of landing gears, wingspan, flaps and other mechanical parts of aircraft and rockets. Its high precision and stability make it an indispensable tool in the manufacture of aerospace equipment.
6. Construction: Hydraulic presses are widely used in the construction field for concrete pouring and compaction work. By adjusting the pressure and flow rate, it can precisely control the pouring speed and depth, thus ensuring the quality of the concrete structure.
7. Medical: In the medical field, hydraulic presses are used for the control and adjustment of medical equipment. For example, some surgical beds and medical chairs use the technology of hydraulic presses, which can be adjusted in height and angle by adjusting the pressure and flow rate.
In addition, hydraulic presses are widely used in other fields, such as agriculture, forestry, textile, paper making and chemical industry. The wide range of its application makes it one of the indispensable and important equipment in industrial production.
