hydroforming - Synonyms for hydroforming | Synonyms Of hydroforming

Examples of "hydroforming"
2005.05 Started commercial production of Hydroforming product
Bramah's basic idea is also exploited in hydroforming.
Processes affected by the formability of a material include: rolling, extrusion, forging, rollforming, stamping, and hydroforming.
In tube hydroforming (THF) there are two major practices: high pressure and low pressure.
Hydroforming is a cost-effective way of shaping ductile metals such as aluminium, brass, low alloy steel, and stainless steel into lightweight, structurally stiff and strong pieces. One of the largest applications of hydroforming is the automotive industry, which makes use of the complex shapes made possible by hydroforming to produce stronger, lighter, and more rigid unibody structures for vehicles. This technique is particularly popular with the high-end sports car industry and is also frequently employed in the shaping of aluminium tubes for bicycle frames.
In sheet hydroforming (SHF) there are bladder forming (where there is a bladder that contains the liquid; no liquid contacts the sheet) and hydroforming where the fluid contacts the sheet (no bladder). Bladder forming is sometimes called flexforming. Flexforming is mostly used for low volume productions, as in the aerospace field.
Hydroforming is capable of producing parts within tight tolerances including aircraft tolerances where a common tolerance for sheet metal parts is within 0.76 mm (1/30th of an inch). Metal hydroforming also allows for a smoother finish as draw marks produced by the traditional method of pressing a male and female die together are eliminated.
Exhausts are constructed from materials such as carbon fibre and titanium in the company's factory which has its own titanium foundry and hydroforming machines.
HMGF is an evolution that further improves upon the cost effectiveness and applicability of several existing commercial processes: superplastic forming, hot blow forming, and hydroforming.
Formed bellows are produced by reworking tubes, normally produced by deep drawing, with a variety of processes, including cold forming (rolling), and hydroforming. They are also called convoluted bellows or sylphons.
Typical applications are in the automotive and aerospace industries where the precursor technology of hydroforming is well known. Other applications include sports equipment and furniture. The multi-material capability are used in decorative workpieces and plumbing fixtures.
Another advantage of hydroforming is that complex shapes can be made in one step. In sheet hydroforming (SHF) with the bladder acting as the male die almost limitless geometries can be produced. However, the process is limited by the very high closing force required in order to seal the dies, especially for large panels and thick hard materials. Small concave corner radii are difficult to be completely calibrated, i.e. filled, because too large a pressure would be required. in fact, the die closing force can be very high, both in tube and sheet hydroforming and may easily overcome the maximum tonnage of the forming press. In order to keep the die closing force under prescribed limits, the maximum internal fluid pressure must be limited. This reduces the calibration abilities of the process, i.e. it reduces the possibility of forming parts with small concave radii.
Complex tubes can be made from multiple sheet components formed and welded together, but this adds unnecessary cost and creates quality concerns at the joints. Hydroforming uses liquid under extreme pressures to form metal tubes. It was developed for the plumbing industry and by 1990 achieved production efficiencies suited for high volume autos. Typically hydroforming is done at ambient temperatures, and limits the forming elongation of metals to 8‐12% diameter increase for aluminum, and 25‐40% for steel. This limits the part shape complexity that can be produced. In addition, the workcenters and tooling can be large and expensive because of the internal fluid pressures required to form ambient tubes. HMGF is able to form tubes with larger shape complexity in only one forming step and generally at a lower internal pressure than in conventional tube hydroforming.
Hydroforming is a process that is analogous to deep drawing, in that the part is formed by stretching the blank over a stationary die. The force required to do so is generated by the direct application of extremely high hydrostatic pressure to the workpiece or to a bladder that is in contact with the workpiece, rather than by the movable part of a die in a mechanical or hydraulic press. Unlike deep drawing, hydroforming usually does not involve draw reductions—the piece is formed in a single step.
One advantage of hydroforming is the savings on tools. For sheet metal only a draw ring and punch (metalworking) or male die is required. Depending on the part being formed, the punch can be made from epoxy, rather than metal. The bladder of the hydroform itself acts as the female die eliminating the need to fabricate it. This allows for changes in material thickness to be made with usually no necessary changes to the tool. However, dies must be highly polished and in tube hydroforming a two-piece die is required to allow opening and closing.
Liquid impact forming uses the principles of hydroforming process with conventional stamping equipment. Even though hydroforming offers great advantages over conventional tube stamping through the reduction of manufacturing steps and the reduction of variation in workpieces, it still requires expensive mechanical equipment such as dies to withstand extreme pressures and pressurizing equipment such as pumps and intensifiers. As an alternative to this, the liquid impact forming utilizes the increase in the internal pressure of the liquid inside of a tube during the stamping process, eliminating the need for the use of above mentioned equipment.
The liquid impact forming process is especially advantageous for the cold forming of tubular structural parts in automotive, railroad and aerospace industries. It may be used in the cold forming of cylindrical or non-cylindrical parts. It is limited for the applications requiring extensive metal flow or bulging because of the absence of external pressure utilization as in hydroforming.
Yield strength is the critical material property exploited by many fundamental techniques of material-working: to reshape material with pressure (such as forging, rolling, pressing, or hydroforming), to separate material by cutting (such as machining) or shearing, and to join components rigidly with fasteners.
It distinguishes itself from conventional sheet metal forming processes (such as embossing, beading and hydroforming) by allowing a self-organized structuring with minimal energy consumption during the forming process, which particularly offers material and energy savings. The main advantage is an increased rigidity (bending- and bulge rigidity) of vault structured materials compared to unstructured materials.
It was used for the Boeing 747 for their air tables, hydroforming dyes, vacuum chuck faces, work holders, and proofing materials. Architecturally, it is used for countertops. It has also been used for whaleboard in fiberglass boat building. Other commercial uses include cutting boards, prep tables, and pizza peels.