Electron Beam Welding Joint Design And Engineering
We fabricated clamping fixtures to secure the parts for welding using its internal machining capabilities. However, nothing can compare to the cleanliness of welding in a vacuum. Joint Access and Postprocessing. With both methods, the laser beam is optically focused on the workpiece surface to be welded. For thicknesses greater than 0. The elimination of ambient gases, combined with the energy density of the electron beam, easily creates very strong and aesthetically pleasing welds. Basically, EB welding works by shooting a high velocity beam of electrons into a part being welded. By incorporating the latest in microprocessor Computer Numeric Control (CNC) and systems monitoring for superior part manipulation, parts of various size and mass can be joined without excessive melting of smaller components. Used to join thin-wall parts, heat conduction welding uses pulsed or continuous-wave solid-state lasers. Electron beam welding (EBW) is a process in which a beam of electrons is made to impinge on the work surface to heat it at the desired spot. Following is a range of different joint designs that are acceptable for electron beam welding.
- Electron beam welding joint design creation
- Electron beam welding joint design and installation
- Electron beam welding joint design pdf
- Electron beam welding working
Electron Beam Welding Joint Design Creation
That also ensures self aligning. Larger spot sizes offer more melt area and a larger depth of focus but require more energy to achieve the same welding depths. Whether your requirements call for the development of a prototype part or fabrication services for large volume production, Sciaky has the right solution to meet your needs. Axial and circumferential welds can be performed with a rotary tilt device that is mounted on top of the x-/y-table. Common ways to account for this are to design the part to be press-fit or to design robust fixturing. The joint can be spot welded or seam welded. A typical 150kV electron beam welding machine can create a weld spike in steel over 2 inches deep with a heat affected zone less than 0.
Electron Beam Welding Joint Design And Installation
The low power mode is used to produce extremely fine welds, which can be as small as 20µm. Compared with other processes, laser welding offers the highest weld quality, lowest heat input, and highest penetration in a single pass. However, with the advent of computers, EB machines quickly evolved into full CNC control. Widely accepted across many industries, EBW permits the welding of refractory and dissimilar metals that are typically unsuited for other methods. The end result is one where the laser spot position relative to the seam is controlled in a dynamic nature, not simply shooting to a programmed point in space. EB welders have matured to meet the demands of modern industries such as the low volume, high quality aircraft industry, as well as mass production-orientated automotive industry. Lap welding requires less robust fixturing. Get your laser cutting quote in seconds. Although Inconel may be prone to weld cracking, performing the electron beam process at a relatively slow speed ensures good mixing in the fusion zone and produces a crack-free joint. The NVEBW machines are provided with high-efficiency pumps and special electron beam discharge orifices to ensure the highest vacuum decrease gradient between the electron gun and atmosphere. Full penetration "T" joints may be welded from one side using the electron beam welding process in Figure 14. Each industry applies its own criteria to reach these goals.
Electron Beam Welding Joint Design Pdf
Examples of gap bridging for lap fillet weld using the Scansonic RLWA with no additional filler metal. Streamlining the Process. The purpose of this Electron Beam Welding Guide document is to provide engineers not familiar with electron beam welding a basic understanding of the process. The joint information below helps define and clarify the tooling and fixture options for a new welding project.
Electron Beam Welding Working
The process is highly standardized, with a tradition of high quality baked in. Angular Beam — Figure 5. In the case of welding zinc material, a gap (~0. The clamps are very close to the seam and apply pressure to ensure a minimal gap. The distance from the exit to the collimation surface is called collimation length. Heat Treatment | Stress Relief. The melt-through or blind tee joint in Figure 13 is used when a part configuration prevents access the faying plane. The various distortions engendered by this regime cancelled each other to produce straight assemblies. What is an Electron Beam?
How does the Process Work? A fully penetrating weld as shown in figure 1 is often used when the assembly requires no post weld machining. Laser welding uses a beam of light focused to a small point at the workpiece. Single Weld "T" Joint — Figure 14. Make sure the workpiece parts have been thoroughly cleaned. Gaps measuring half the upper material thickness or less can easily be addressed with both steel and aluminum, while further studies show abilities beyond that in certain situations (FIGURE 6). Although filler metal is not normally added to the weld pool, it can be added via bare wire. Welding Stainless Steel. If the weld metal area is to be increased, as in the case of joining thin pipes, the edges may be scarfed. 125 mm; however aluminium alloys can tolerate somewhat larger gaps than steels.