The disadvantages and advantages of the hydraulic press machine.

2021-11-19

The hydraulic press machine is a kind of machine made of liquid as a working medium, which is used to transfer energy to realize various processes according to Pascal's principle. The hydraulic press machine is generally composed of three parts: the machine (host), power system and hydraulic control system. Hydraulic press machines are classified as valve hydraulic press machines, liquid hydraulic press machines, and engineering hydraulic press machines.

This passage is going to talk about the following introductions of hydraulic press machine: 

1) What is a hydraulic press machine?
2) Advantages and disadvantages of hydraulic press machines machine 
3) Applications of hydraulic press machine

1) What is a hydraulic press machine?

A hydraulic press machine is a mechanical press that uses a hydraulic cylinder to produce a compressive force. It uses a mechanical hydraulic equivalent lever, and is also known as a Bramah press after the inventor, Joseph Bramah, of England. He invented this press in 1795 and received a patent for the press.

2) Advantages and disadvantages of hydraulic press machines machine 

For hollow variable-section structural members, the traditional manufacturing process is to stamp and form two halves and then weld them as a whole, while hydroforming allows the hollow structural member with variations along the member's cross-section to be formed in one piece.Compared with the stamping and welding process, hydroforming technology and process has the following main advantages. 

Hydraulic press machine to reduce the mass and save material. For typical parts such as automobile engine brackets and radiator supports, hydroformed parts are 20% to 40% lighter than stamped parts; for hollow stepped shaft parts, the weight can be reduced by 40% to 50%. 

Hydraulic press machines reduce the number of parts and molds, and reduce the cost of molds.Hydroformed parts usually need only 1 set of molds, while stamping parts mostly need multiple sets of molds. Hydroformed engine bracket parts are reduced from 6 to 1, and radiator support parts are reduced from 17 to 10. 

Hydraulic press machines can reduce the amount of welding for subsequent machining and assembly. Take the radiator bracket as an example, the heat dissipation area is increased by 43%, the welding joints are reduced from 174 to 20, the process is reduced from 13 to 6, and the productivity is increased by 66%． 

Hydraulic machine and high strength and stiffness, especially fatigue strength, such as hydroformed radiator bracket, its stiffness in the vertical direction can be increased by 39%, the horizontal direction can be increased by 50%. 

 The hydraulic machine to reduce production costs. According to the statistical analysis of the applied hydroformed parts, the production cost of hydroformed parts is 15% to 20% lower than that of stamped parts on average, and the tooling cost is 20% to 30% lower. 

Hydraulic press also has some disadvantages. But the flaws do not cover up. Hydraulic components manufacturing precision requirements are high due to the high technical requirements of the components and assembly is more difficult, the use of maintenance is stricter.   The oil of the hydraulic press is affected by the temperature because the viscosity of the oil changes with the temperature, so it is not suitable to work in a high or low temperature environment. The hydraulic machine is not suitable for long-distance power transmission because of the use of oil pipes to transmit pressure oil, the pressure loss is large, so it is not suitable for long-distance power transmission. The oil is easy to contaminate and the oil contamination will affect the reliability of the system work. It is not easy to check and troubleshoot the hydraulic press, and needs to be checked by professionals. 

3) Applications of hydraulic press machine

Hydraulic press machines are commonly used for forging, riveting, moulding, drop-feeding, stamping, deep drawing and metal forming operations. Hydraulic press machines offer advantages in manufacturing with the ability to create more complex shapes and save material. A hydraulic press machine will take up less space than a mechanical press with the same capabilities. 

What is more? Apart from providing customers with high-quality press machines, the broad production line of our company also provide customers with various kinds of automatic feeding machines and cutting machines.