Oxy-Arc Cutting: Principles and Techniques for Underwater Welding
Oxy-Arc Cutting: Principles and Techniques
Introduction
The oxy-arc method is an oxygen cutting process where metal is cut by a chemical reaction with oxygen at high temperatures. This temperature is maintained by an electric arc between the electrode and the metal, as well as chemical reactions within the electrode itself. While exothermic cutting has become more prevalent, oxy-arc cutting remains a valuable technique with a long history and proven effectiveness.
This process is particularly well-
Read MoreGuide to Mooring Lines: Types, Materials, and Equipment
Mooring Lines
Types of Mooring Lines
Lashes: Lines that secure a boat to a pier or dock. They are typically made of synthetic fibers like:
- Polyamide (Nylon): Elastic, heat-resistant, and resistant to oils and solvents. However, they lose strength when wet.
- Polyester (Terylene): Durable, resilient, and resistant to abrasion, acids, oils, and solvents. They are not as elastic as polyamide lines.
- Polypropylene: Similar elasticity to polyester, heat-resistant, lightweight, and buoyant. However, they have
A Comprehensive Guide to Film Projection Systems & Techniques
1.2 Components of Projection Systems
1. Cruz de Malta: This drive mechanism keeps the film in constant oscillation between movement and rest. It consists of two parts: the cross and the impeller plate. The arms of the cross move the film and place it for exposure to light.
2. Shutter: This component interrupts the projection during the process of changing the image.
3. Window: With dimensions smaller than the frame of the movie (21×17.5 mm, compared to the 21.5×18 mm frame), the window prevents separation
Read MoreTB10 Technical Description: Landing Gear, Brakes, Propeller, Lubrication, and Air Systems
LANDING GEAR
The landing gear of the TB10 used in Adventia is of the stationary tricycle type. All wheels are equipped with fairings (covers) which give a streamlined form to the wheels, reducing parasite drag. Without fairings, the airspeed is reduced by about 10 knots. All wheels are composed of two light alloy flanges bolted together. They can be fitted with Dunlop or Goodyear tires using inner tubes. The wheel assembly is attached to the gear axle by a safety-tied nut. Tires are inflated with
Read MoreIndustrial Gases for Metal Products, Machinery, and Metallurgy
Metal Products
Linde has developed a full suite of solutions specifically targeted to their needs. Engineers in this industry have knowledge of all procedures and work day to day deploying our solutions to improve the quality, safety, and production costs.
Metal Products – Cutting
Cut with acetylene
The combination of acetylene oxygen produces a
Hydraulics Glossary: Key Terms and Definitions
Hydraulics Glossary
A
Actuator
A device that converts hydraulic energy into mechanical energy (e.g., engine or cylinder).
Linear Actuator
An actuator that transforms hydraulic energy into rectilinear movement (a cylinder).
Rotary Actuator
A device that transforms hydraulic power into rotational movement (hydraulic motor).
Accumulator
A vessel in which a fluid can be stored under pressure, as a source of hydraulic power.
Aeration
The presence of air in the hydraulic fluid. Excessive aeration causes foaming
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