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2. Orbital welding - Wikipedia

   en.wikipedia.org/wiki/Orbital_welding

   The main components of the typical orbital welding system are the power supply with integrated computer control, the welding head, and either a wire feed mechanism or a presharpened tungsten electrode. Welding of certain sizes and material types will also require a water/coolant system.

3. Welding - Wikipedia

   en.wikipedia.org/wiki/Welding

   The heat-affected zone (HAZ) is a ring surrounding the weld in which the temperature of the welding process, combined with the stresses of uneven heating and cooling, alters the heat-treatment properties of the alloy. The effects of welding on the material surrounding the weld can be detrimental—depending on the materials used and the heat ...

4. D-ring - Wikipedia

   en.wikipedia.org/wiki/D-ring

   A D-ring used to secure cargo in a utility trailer (A) D-ring (shown in isometric view) (B) Weld-on pivot link; note the incorrect fillet weld call-out (bottom-right). The correct method of securing a weld-on pivot link is a [t weld] which consists of a perpendicular vee butt joint secured to the billet using a butt weld or fusion weld.

5. Rotary friction welding - Wikipedia

   en.wikipedia.org/wiki/Rotary_friction_welding

   Inventor A. Graham demonstrated, on welding pipes with a diameter of 152.4 mm, a method that uses radial friction welding with an intermediate ring for connecting long pipes, [9] [10] at long last succeeding after some attempts occurred in 1975, [11] and after scientists in Leningrad theorized on the idea in newspapers. [3]

6. Arc welding - Wikipedia

   en.wikipedia.org/wiki/Arc_welding

   Arc welding power supplies can deliver either direct (DC) or alternating (AC) current to the work, while consumable or non-consumable electrodes are used. The welding area is usually protected by some type of shielding gas (e.g. an inert gas), vapor, or slag. Arc welding processes may be manual, semi-automatic, or fully automated.

7. The best tablets for seniors in 2025, tested and reviewed - AOL

   www.aol.com/lifestyle/best-tablets-for-seniors...

   We found the five best tablets for seniors, including the iPad, GrandPad, and Surface Pro. Here's what our tech expert recommends. The best tablets for seniors in 2025, tested and reviewed

8. The best wireless headphones for seniors in 2025 - AOL

   www.aol.com/lifestyle/best-wireless-headphones...

   Best headphones for seniors overall. Sony. ... (I tested all five of the products listed below), product reputation, professional reviews, user ratings and, finally, price. Every product I've ...

9. Home automation for the elderly and disabled - Wikipedia

   en.wikipedia.org/wiki/Home_automation_for_the...

   Home automation systems may include automatic reminder systems for the elderly. [2] Such systems are connected to the Internet and make announcements over an intercom. They can prompt about doctor's appointments and taking medicine, as well as everyday activities such as turning off the stove, closing the blinds, locking doors, etc. Users ...