hot-tool welding
31Timeline of Russian inventions and technology records — The Hall of Space Technology in the Tsiolkovsky State Museum of the History of Cosmonautics, Kaluga, Russia. The exhibition includes the models and replicas of the following Russian inventions: the first satellite, Sputnik 1 (a ball under the… …
32Oxyhydrogen — Knallgas redirects here. For bacteria which oxidize hydrogen, see Knallgas bacteria. Nineteenth century electrolytic cell for producing oxyhydrogen. Oxyhydrogen is a mixture of hydrogen (H2) and oxygen (O2) gases, typically in a 2:1 molar ratio,… …
33Nickel titanium — Nickel titanium, also known as nitinol, is a metal alloy of nickel and titanium, where the two elements are present in roughly equal atomic percentages. Nitinol alloys exhibit two closely related and unique properties: shape memory and… …
34Blow torch — For other meanings, including oxy gas torches, see Blowtorch (disambiguation). An old fashioned kerosene blowtorch / blowlamp A blowtorch (US), blow torch (US), or blowlamp (UK) is a tool for applying lower intensity and more diffuse flame and… …
35Powder metallurgy — is the process of blending fine powdered materials, pressing them into a desired shape (compacting), and then heating the compressed material in a controlled atmosphere to bond the material (sintering). The powder metallurgy process generally… …
36Niobium — zirconium ← niobium → molybdenum V ↑ Nb ↓ Ta …
37Zinc — This article is about the metallic element. For other uses, see Zinc (disambiguation). copper ← zinc → gallium ↑ Zn ↓ Cd …
38Swaging — (  /ˈsweɪ …
39Oxygen — This article is about the chemical element and its most stable form, O2 or dioxygen. For other forms of this element, see Allotropes of oxygen. For other uses, see Oxygen (disambiguation). nitrogen ← oxygen → fluorine ↑ O ↓ …
40Marking out — For other uses, see Marking out (disambiguation). Marking out or layout is the process of transferring a design or pattern to a workpiece, as the first step in the manufacturing process. It is performed in many industries or hobbies although in… …
