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  2. Peening - Wikipedia

    en.wikipedia.org/wiki/Peening

    In metallurgy, peening is the process of working a metal's surface to improve its material properties, usually by mechanical means, such as hammer blows, by blasting with shot (shot peening), focusing light (laser peening), or in recent years, with water column impacts (water jet peening) and cavitation jets (cavitation peening). [1]

  3. Shot peening - Wikipedia

    en.wikipedia.org/wiki/Shot_peening

    Its descaling action can be used in the manufacturing of steel products such as strip, plates, sheets, wire, and bar stock. [1] [8] Shot peening is a crucial process in spring making. Types of springs include leaf springs, extension springs, and compression springs.

  4. RIM-174 Standard ERAM - Wikipedia

    en.wikipedia.org/wiki/RIM-174_Standard_ERAM

    The RIM-174 Standard Extended Range Active Missile (ERAM), or Standard Missile 6 (SM-6), is a missile in current production for the United States Navy (USN). It was designed for extended-range anti-air warfare (ER-AAW) purposes, providing capability against fixed and rotary-wing aircraft, unmanned aerial vehicles, anti-ship cruise missiles in flight, both over sea and land, and terminal ...

  5. Steel grades - Wikipedia

    en.wikipedia.org/wiki/Steel_grades

    Comparison of steel grades by chemistry [4] [5] [6] EN steel number (Europe) EN steel name (Europe) ASTM grade (USA) AISI/SAE grade (USA) UNS (USA) DIN (Germany) BS (UK) UNI (Italy) JIS (Japan) Carbon steels 1.1141 1.0401 1.0453: C15D C18D: 1010 1018: CK15 C15 C16.8: 040A15 080M15 080A15 EN3B: C15 C16 1C15: S12C S15 S15CK S15C 1.0503 1.1191 1. ...

  6. 16-inch/45-caliber gun - Wikipedia

    en.wikipedia.org/wiki/16-inch/45-caliber_gun

    The 16-inch gun was a built-up gun constructed in a length of 45 calibers. The Mark 1 had an A tube, jacket, liner, and seven hoops , four locking rings and a screw-box liner. When the gun was designed in August 1913 it was referred to as the "Type Gun (45 Cal.)" as an effort to conceal the gun's true size of 16 inches.

  7. Engineering drawing abbreviations and symbols - Wikipedia

    en.wikipedia.org/wiki/Engineering_drawing...

    corrosion-resistant [steel] Largely synonymous with stainless steel, unless specific grades, specs, and distinctions are made on the drawing. Some people treat CRES as a subset of the stainless steels. CRS: cold rolled steel; on centres: Defines centre-to-centre distance of two features, such as two holes. C/T Correlation / Tracking C'BORE or ...

  8. Primary school - Wikipedia

    en.wikipedia.org/wiki/Primary_school

    SD Kelas 6: SMP Kelas 7: SMP Kelas 8: SMP Kelas 9: SMA Kelas 10: SMA Kelas 11: ... elementary schools usually have six grades with pupils aged between 5 and 11 years ...

  9. Rim (wheel) - Wikipedia

    en.wikipedia.org/wiki/Rim_(wheel)

    A standard automotive steel wheel rim is made from rectangular sheet metal. The metal plate is bent to produce a cylindrical sleeve, and then the two free edges of the sleeve are welded together. At least one cylindrical flow spinning operation is carried out to obtain the desired thickness profile of the sleeve—and the desired angle of ...