Electron Beam Machining EBM Applications, Advantages and Disadvantages

EBM applications advantages

🔗EBM operating principle and working

EBM applications

EBM now found application in many industrial equipments. Special characteristics of EBM, such as high-resolution long depth of field, make them suited for specific application. Other special characterises are their extraordinary high energy, controllability and compatibility with high vacuum. It also has the ability to catalyse many chemical reactions. EBM is used to cut and hole making on thin material. Hole drilling is the main application of EBM (e.g. wire drawing dies, making of the fine gas orifice). It can cut thin hole and slots in metals, plastics and ceramics of any hardness. It finds application in food, chemical, aerospace, textile, and automobile industries.

Electron Beam Machining EBM Construction, Operating Principle and Working

electron beam machining equipment

Components and working of EBM

Electron-beam machining is a kind of machining process by using high-velocity electron beam. It is similar to the electron beam welding machine. In EBM, electrons are accelerated to high velocity as half of the light speed, then it is impinged to work material surface. When the electron beam impact on the surface of work material, the high kinetic energy of the electron converted in to thermal energy, it is then melt and finally evaporate the metal.

Ultrasonic Machining USM - Applications Advantages and Disadvantages

blue stones

🔗Working of ultrasonic machining equipment USM
🔗Factors affecting ultrasonic machining

Applications of Ultrasonic Machining USM

  • USM technology is used to the machining of brittle material and material of high hardness due to the microcracking mechanism.
  • USM can be used to drill holes of straight and curved axes.
  • For drilling holes in wire drawing dies.
  • Threading of hard material and alloys by rotating and translating the movement of either tool or workpiece.
  • Unlike other metal removal process, such as chemical, thermal processes, USM method does not harm the physical properties of workpiece and it maintains crystallographic properties. So they are used for machining of more brittle and high sensitive material.

Ultrasonic Machining USM Process Parameters and Factors Affecting Ultrasonic Machining Rate

Process Parameters and Factors Affecting Ultrasonic Machining
🔗Working of ultrasonic machining equipment
🔗USM applications, advantages and limitations

Process variable and their effect on the ultrasonic machining

The machining rate and accuracy of USM depend on many factors. Diagram shows some of the factors that affect the USM.

USM Machining Rate

The cutting rate in USM depends on

1. Vibration frequency and amplitude: The frequency of vibration is directly proportional to the material removal rate. The increase in frequency increase the number blows by the tool per second and cut more material from surface. For many materials, the material removal rate is proportional to the square of amplitude of vibration.

Ultrasonic Machining USM Equipment Elements and Working

ultrasonic machining
Read: Abrasive jet machining (AJM) construction and working
🔗Electron beam machining EBM construction, operating principle and working

Ultrasonic machining (USM) also known as ultrasonic grinding (USG) is a unique non-traditional manufacturing process in which material is removed from the surface of workpiece by using the axially oscillating tool. The tool is vibrating at high frequency and low amplitude in the presence of fine abrasive particles. USM is used in precision machining of hard and brittle material. It can achieve dimensional accuracy up to ±0.005mm.

Comparison between Stationary Blade and Rotating Blade Type Rotary Compressor (Rolling Piston Vs Rolling Vane)

stationary blade and moving blade rotary compressor1
🔗Working of stationary blade rotary compressor
🔗Working of moving blade rotary compressor
  • Both rolling piston and rolling vane compressor, it compresses the fluid by decreasing the space between the roller and cylinder.
  • In both types, the blade is allowed to move up and down (reciprocate) in the slot to make a sealed compartment between cylinder and roller.

Difference between stationary blade and moving blade type rotary compressor

  • In rolling piston, the roller is eccentrically mounted on a shaft which is concentric to the cylinder. In rolling vane, the roller is concentrically mounted to a shaft which is eccentrical to the cylinder.
  • In rolling piston type, the roller rolls around the inside wall of cylinder and blade move up down to make contact with the roller. In rolling vane type, the roller rotates inside the cylinder (not rolls around the wall) and the blade moves up and down in the slots on the roller to keep contact with the cylinder wall.
  • In rolling piston, the blade separates low pressure and high-pressure side while the roller rolls over the inside wall of the cylinder. In rolling vane type, the roller tightly touches only at the point between suction and the discharge port and this separates high pressure and the low-pressure side of the compressor.

  • Rolling piston rotary compressor has only one blade. Rolling vane compressor has more than one blade. It may have as many as eight blades. More the number of blades more the efficiency will be.

  • In rolling piston type, the single blade/ vane is attached in the slots on the cylinder. While in rolling blade type, the vanes are attached on the slots of the roller and it rotates along with roller.