Sheet hydroforming is a process that uses liquid as the medium of energy transfer to form the workpiece. Hydroforming is applied more and more in industry because it results in a better strain state in the workpiece. A deeper draw can be achieved and the friction between tools and blanks is reduced.
The advantages of hydroforming include reduction in weight, increase in stiffness, no damage to the surface of the sheet, and the capability to form complex shapes.
1. Reduction in weight: If strength is not compromised, a reduction in weight is always advantageous in the automobile, airline, and other such industries. The reduction in weight can contribute to an increase in speed. In addition, in building any structure a reduction in weight is advantageous.
2. Increase in stiffness and rigidity: While we might want speed, we also want safety. With the stiffness and rigidity, safety is enhanced.
3. Complex shaped: With sheet hydroforming, many complex shapes can be created without the use of welds which could compromise safety. The use of stamps and hydraulics allows various shapes include concave and convex curves.
4. Good surface finish: We want the reduction in weight with safety. But we also want the aesthetics. This process produces quality surface finishes without the blemishes of welding.
Sheet hydroforming is useful in reducing weight and cost simultaneously by improving structural integrity, strength, and rigidity. Cost reduction includes the elimination or decrease of welds and welding operations. Additionally, production steps are reduced which contributes to the cost reduction.
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Sheet Metal Hydroforming is similar to the conventional deep-drawing technique, but has significant advantages for the formed part and keeps the tooling costs and production costs low.
Below is the list of t benefits of sheet metal hydroforming, as opposed to the conventional deep-drawing technique.
Hydroforming tooling can cost less than half the price of standard press tooling. Tooling generally required is a male die and a draw ring. The rubber diaphragm typically acts as a universal female die in the sheet metal hydroform machine.
Irregularly contoured shapes are easily formed using hydroforming, it also makes it easy to form irregular shapes and contours because matching dies are not generally needed.
- No Need to Waste Time Thinning Material Out:
No need to waste time stretching. Hydroforming flows the metal rather than stretching it as a result you will have less wall thinning.
- Less Work:
Usually parts require multiple operations with a typical press, with hydroforming most of the operations can be condensed into one operation.
- Save Money:
Since almost all punches and draw rings are made of inexpensive cast iron, hardened tool steels are therefore not often needed. These type of tools carry a longer life span. Sheet metal hydroforming offers a wrapping action of diaphragm which does not cause scuff marks, shock, and stretch lines.
- Quick Set Up:
Tools are able to be mounted easily and quickly they are also self-centering and self aligning. Set-up times are much quicker and very efficient.
- Durability of Materials:
Almost all sheet metals can be hydroformed such as stainless steel, carbon steel, aluminum, copper, brass, precious metals, high strength alloys. The material’s thickness varies within the restrictions of the machine. Usually tool modifications are not required.
As you can see sheet hydroforming as its many benefits. If you would like more information please contact us with any question you may have.