VITCAS HPM-Heatproof Mortar – Air Setting - Cement Ready Mixed - Heat Resistant Mortar for Fire bricks in fireplace, stoves, boilers etc - Indoor Use

Product Information

Apply with a trowel making sure are areas to be joined are totally covered with a thin bed of Vitcas Heat Proof Mortar. It is suitable for all kinds of INTERIOR use, but must not to be used outdoors, unless it is protected from water by a roofed area or an additional render coat with a different material. Fire Cement is a ready and mixed combination of thermosetting resins and inorganic fillers. When applied and exposed to high temperatures, this combination is capable of healing, which results in a mortar. This mortar is temperature resistant up to 1250ºC. Operators may fire spin-stabilised rounds from either a smoothbore or a rifled barrel. Rifled mortars are more accurate but slower to load. Since mortars are generally muzzle-loaded, mortar bombs for rifled barrels usually have a pre-engraved band, called an obturator, that engages with the rifling of the barrel. Exceptions to this were the U.S. M2 4.2-inch mortar and M30 mortar, whose ammunition had a sub-calibre expandable ring that enlarged when fired. This allows the projectile to slide down the barrel freely but grip the rifling when fired. The system resembles the Minié ball for muzzle-loading rifles. For extra range, propellant rings (augmentation charges) are attached to the bomb's fins. The rings are usually easy to remove, because they have a major influence on the speed and thus the range of the bomb. Some mortar rounds can be fired without any augmentation charges, e.g., the 81 mm L16 mortar. Vesa Toivonen, 2003, From Tampella to Patria, 70 Years of Finnish Heavy Weapons Production, Tampere, ISBN 952-5026-26-4

Mortars have existed for hundreds of years. They were first used in sieges. A European description of the Siege of Belgrade (1456) by Giovanni da Tagliacozzo says that the Ottoman Turks used seven mortars that fired "stone shots one Italian mile high". [4] The speed of these was said to be very slow. It was also said that men could be prevented from being injured by putting observers out who warned the troops of what angle the mortars were firing at. [5]Precision guided [ edit ] Soldiers standing in front of an M1064 mortar carrier, holding a XM395 Precision Guided Mortar Munition prototype at Fort Benning, Georgia, February 2006 Fire putty is also widely used for sealing against the escape of smoke and flue gases in residential and commercial appliances, such as stoves, chimneys, and central heating systems. How to Use Fire Cement on Flue Pipe?

A mortar is quite simple and easy to use. Most are muzzleloaders made up of a tube that a gunner drops a bomb into. The tube is usually set at between 45 and 90 degrees angle to the ground. [1] The higher the angle, the shorter the range. When the bomb reaches the bottom of the tube it hits a firing pin. The mortar bomb's weight is enough to set off the firing pin which ignites the round and fires it. [1] Some larger mortars have a firing pin that is set off by using a string instead of automatically. John Norris (2002). Infantry Mortars of World War II. Osprey Publishing. pp.42–43. ISBN 978-1-84176-414-6. Archived from the original on 2015-03-20 . Retrieved 2016-03-27. Light and medium mortars are easy to move around. They are usually used by infantry units. Mortars can fire from a trench or defilade. Mortars are mainly medium calibre weapons. [1] However, mortars both bigger and smaller than this have been made. An example of a smaller mortar is the British 51 mm Light Mortar. The 51mm is carried by just one soldier. It is made up of only a tube and a base plate. A bigger example is the Soviet 2S4 M1975 Tyulpan ( tulip flower) 240mm self-propelled mortar. Gábor Ágoston (2005). Guns for the sultan: military power and the weapons industry in the Ottoman Empire. Cambridge University Press. p.68. ISBN 978-0-521-84313-3.

What Is Fire Cement Used For?

The first use in siege warfare was at the 1453 siege of Constantinople by Mehmed the Conqueror. An Italian account of the 1456 siege of Belgrade by Giovanni da Tagliacozzo states that the Ottoman Turks used seven mortars that fired "stone shots one Italian mile high". [6] The time of flight of these was apparently long enough that casualties could be avoided by posting observers to give warning of their trajectories. [7] Engraving depicting the Venetian siege of the Acropolis of Athens, September 1687. The trajectory of the shell that hit the Parthenon, causing its explosion, is marked.

Toys". Culturecontent.com. Archived from the original on 10 October 2017 . Retrieved 19 November 2017. Fly-K mortar systems – excellent stealth capabilities and tremendous tactical potential, archived from the original on 2023-03-14 During the Battle of Iwo Jima, the Imperial Japanese Army used twelve 320 mm mortars against the American forces. Norris, John; Calow, Robert (11 December 2002). Infantry Mortars of World War II. ISBN 9781841764146 . Retrieved June 26, 2012. {{ cite book}}: CS1 maint: multiple names: authors list ( link) [ permanent dead link]

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Chisholm, Hugh, ed. (1911). "Coehoorn, Menno, Baron van". Encyclopædia Britannica. Vol.8 (11thed.). Cambridge University Press. p.40. Improvised mortars used in the Syrian civil war are known as hell cannons. Observers have noted that they are "wildly inaccurate" and responsible for hundreds of civilian deaths. [21] Sri Lankan civil war [ edit ] From the 17th to the mid 20th century, very heavy, relatively immobile siege mortars were used, of up to one metre calibre, often made of cast iron and with an outside barrel diameter many times that of the bore diameter. An early example was Roaring Meg, with a 15.5-inch (390mm) barrel diameter and firing a 220lb (100kg) hollow ball filled with gunpowder and used during the English Civil War in 1646. The supporting construction must be classified in accordance with EN 13501-2 for the required fire resistance and be suitable for the imposed load of the FR230. A modified version of the mortar, which fired a modern fin-stabilised streamlined projectile and had a booster charge for longer range, was developed after World War I; [13] this was in effect a new weapon. By World War II, it could fire as many as 30 bombs per minute and had a range of over 2,500 yards (2,300m) with some shell types. [14] The French developed an improved version of the Stokes mortar as the Brandt Mle 27, further refined as the Brandt Mle 31; this design was widely copied with and without license. [15] [16] [17] These weapons were the prototypes for all subsequent light mortar developments around the world.