electrohydraulic forming
Electrohydraulic forming [EHF] is a high-velocity metal forming process wherein underwater electric discharges create shockwaves to deform metal parts. The shockwaves of discharge apply stress on metals, allowing them to deform with very little contact to the forming equipment, making it valid for the fabrication of very complex geometries.
Key Features:
- Shockwave-Driven Deformation: Intense pressure from shockwaves is generated through electrohydraulic discharges, and this is relied upon in EHF to deform the material.
- Minimal Tool Contact: In comparison with conventional processes, there are fewer tools or dies employed in EHF, which leads to less wear and tear on the EHF equipment.
- Precision and Complexity: Able to fabricate intricate and precise shapes that are applicable for lightweight metals or other materials with high strength-to-weight ratios.
Electrohydraulic forming is a technique used within various industries, including aerospace, automotive, and the manufacture of specialized components, generally where components utilize high-strength materials, such as titanium or aluminum. This is because these materials are very difficult to process conventionally. The method allows forming complicated shapes without direct contact between the metallic part and the forming tools, thus reducing the chances for resulting distortion of the material and enhancing its integrity—making it very valuable for high-performance applications.