Technical advantages of hydraulic press?
Hydraulic press is a kind of mechanical equipment that uses liquid static working pressure to produce and process metal materials, plastics, vulcanized rubber, wood, powder and other products. It is often seen in the processing technology and forming processing technology, such as: casting, stamping die, cold extrusion, straightening, bending, reverse edge, sheet metal deep drawing, powder metallurgy, riveting these.
Its basic principle is the use of Pascal's law made use of liquid pressure transmission system of mechanical equipment, type quite a lot. Naturally, the main uses are also diverse depending on the need. For example, according to the liquid type of transmission gas pressure, there are two types of hydraulic press and hydraulic press.
The total working pressure caused by the hydraulic press is very large, which is often seen in the forging and stamping dies. The forging hydraulic press is divided into two types: free forging hydraulic press and free forging hydraulic press. The free forging hydraulic press uses a die, while the free forging hydraulic press does not need a die.
hydraulic machine advantages?
Compared with the traditional stamping die design, hydraulic forming process has obvious technical and economic development advantages in alleviating net weight, reducing the total number of parts and dies, improving bending stiffness and compressive strength, and reducing product costs. It has been more and more used in the industrial production industry, especially in the automobile industry.
Hydraulic press in the automotive industry and airlines, aerospace and other industries, to ease the construction quality to save the kinetic energy in operation is the overall goal of the long-term pursuit of everyone, but also one of the development trends of intelligent creation technology. Hydroforming (hydroforming) is a kind of intelligent creation technology for completing the lightweight of the automobile.
Hydroforming is also called "internal high-pressure forming". Its basic concept is to use the pipe as the embryo, release the high-pressure liquid inside the pipe, and release the radial torque on both sides of the pipe to carry out replenishment. Under the joint effect of the two external forces, the original materials of the pipe material produce plastic deformation and cater to the inner cavity of the die, obtaining hollow parts whose appearance and circumferential density meet the technical standards.
Hydraulic machine advantage?
For hollow variable cross-section parts, the traditional production creation and processing process is to first press the mold to form two half pieces, and then electric welding to form a whole, while hydroforming can form hollow parts with changes along the cross-section of prefabricated components at one time. Compared with the stamping die welding method, hydroforming technology and processing technology have the following key advantages:
1. Relieve quality and save raw materials. For typical parts such as engine fixing bracket and heat pipe radiator support frame, hydroforming parts are 20% ~ 40% less than metal stamping parts. For hollow step shaft parts, the net weight can be relieved by 40% ~ 50%.
2. Reduce the total number of parts and molds, reduce mold costs. Hydroforming parts usually only need 1 set of molds, and most of the metal stamping parts need several sets of molds. The hydroformed automobile engine fixing bracket parts are reduced from 6 to one, and the heat pipe radiator support frame parts are reduced from 17 to 10.
3. It can reduce the amount of welding created and assembled by mechanical processing afterwards. Taking the heat pipe radiator support frame as an example, the total heat removal area is increased by 43%, the spot welding is reduced from 174 to 20, the process flow is reduced from 13 to 6, and the production efficiency is increased by 66%.
4. Improve the compressive strength and bending stiffness, especially the fatigue limit, such as the hydroformed heat pipe radiator support frame, its bending stiffness can be increased by 39% in the vertical direction and 50% in the horizontal direction.
5. Reduce product costs. According to the data analysis of the hydraulic forming parts, the product cost of the hydraulic forming parts is reduced by 15% ~ 20% compared with the average value of the metal stamping parts, and the mold cost is reduced by 20% ~ 30%.