INTRODUCTION to GUNSMITHING Version 2.11
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Guns Dictionary : Page K1 the Directory: K–Kynoid
GUNS DICTIONARY : PAGE K1 THE DIRECTORY: K–KYNOID Last update: May 2018 k Found on small arms components made in Germany during the Second World War by →Luck & Wagner of Suhl. K, crowned. A mark found on Norwegian military firearms made by→ Kongsberg Våpenfabrikk. K, encircled. Found on miniature revolvers made in the U.S.A. prior to 1910 by Henry M. →Kolb. Kaba, KaBa, Ka-Ba, KA-BA Marks associated with a distributor of guns and ammunition, Karl →Bauer of Berlin. Bauer imported 6·35mm →Browning- type pocket pistols from Spain, and sold ‘KaBa Special’ patterns which seem to have been the work of August →Menz. Kaba Spezial A Browning-type 6·35mm automatic pistol made in Spain by Francisco →Arizmendi of Eibar for Karl →Bauer of Berlin. Six rounds, striker fired. Kabakov Yevgeniy Kabakov was co-designer with Irinarkh →Komaritskiy of the sight-hood bayonet issued with the perfected or 1930-pattern Soviet →Mosin Nagant rifle. Kabler William or Wilhelm Kabler of Sante Fé, Bracken County, Kentucky, traded as a gunmaker in the years immediately before the Civil War. Kacer Martin V. Kacer of St Louis, Missouri, was the co-grantee with William J. Kriz of U.S. Patents 273288 of 6th March 1883 (‘Fire-Arm’, application filed on 16th January 1882) and 282328 of 31st July 1883 (‘Magazine Fire- Arm’, application filed on 7th December 1882). These patents protected, respectively, a break-open double barrel gun and a lever-action magazine rifle with a magazine in the butt-wrist. Kadet, Kadet Army Gun: see ‘King Kadet’. Kaduna arms factory The principal Nigerian manufacturory, responsible for local adaptations to →Garand and FN →FAL rifles. -
A Comparison of Thixocasting and Rheocasting
A Comparison of Thixocasting and Rheocasting Stephen P. Midson The Midson Group, Inc. Denver, Colorado USA Andrew Jackson Arthur Jackson & Co., Ltd. Brighouse UK Abstract The first semi-solid casting process to be commercialized was thixocasting, where a pre-cast billet is re-heated to the semi-solid solid casting temperature. Advantages of thixocasting include the production of high quality components, while the main disadvantage is the higher cost associated with the production of the pre-cast billets. Commercial pressures have driven casters to examine a different approach to semi-solid casting, where the semi-solid slurry is generated directly from the liquid adjacent to a die casting machine. These processes are collectively referred to as rheocasting, and there are currently at least 15 rheocasting processes either in commercial production or under development around the world. This paper will describe technical aspects of both thixocasting and rheocasting, comparing the procedures used to generate the globular, semi-solid slurry. Two rheocasting processes will be examined in detail, one involved in the production of high integrity properties, while the other is focusing on reducing the porosity content of conventional die castings. Key Words Semi-solid casting, thixocasting, rheocasting, aluminum alloys 22 / 1 Introduction Semi-solid casting is a modified die casting process that reduces or eliminates the porosity present in most die castings [1] . Rather than using liquid metal as the feed material, semi-solid processing uses a higher viscosity feed material that is partially solid and partially liquid. The high viscosity of the semi-solid metal, along with the use of controlled die filling conditions, ensures that the semi-solid metal fills the die in a non-turbulent manner so that harmful gas porosity can be essentially eliminated. -
Download Enemy-Threat-Weapons
UNITED STATES MARINE CORPS THE BASIC SCHOOL MARINE CORPS TRAINING COMMAND CAMP BARRETT, VIRGINIA 22134-5019 ENEMY THREAT WEAPONS B2A2177 STUDENT HANDOUT/SELF PACED INSTRUCTION Basic Officer Course B2A2177 Enemy Threat Weapons Enemy Threat Weapons Introduction In 1979, the Soviets invaded Afghanistan. The Soviets assumed this would be a short uneventful battle; however, the Mujahadeen had other plans. The Mujahadeen are guardians of the Afghani way of live and territory. The Soviets went into Afghanistan with the latest weapons to include the AK-74, AKS-74, and AKSU-74, which replaced the venerable AK-47 in the Soviet Arsenals. The Mujahadeen were armed with Soviet-made AK-47s. This twist of fate would prove to be fatal to the Soviets. For nearly 11 years, the Mujahadeen repelled the Soviet attacks with Soviet-made weapons. The Mujahadeen also captured many newer Soviet small arms, which augmented their supplies of weaponry. In 1989, the Soviet Union withdrew from Afghanistan back to the other side of the mountain. The Mujahadeen thwarted a communist take- over with their strong will to resist and the AK-47. This is important to you because it illustrates what an effective weapon the AK-47 is, and in the hands of a well-trained rifleman, what can be accomplished. Importance This is important to you as a Marine because there is not a battlefield or conflict that you will be deployed to, where you will not find a Kalashnikov AK-47 or variant. In This Lesson This lesson will cover history, evolution, description, and characteristics of foreign weapons. -
Heat Treating of Aluminum Alloys
ASM Handbook, Volume 4: Heat Treating Copyright © 1991 ASM International® ASM Handbook Committee, p 841-879 All rights reserved. DOI: 10.1361/asmhba0001205 www.asminternational.org Heat Treating of Aluminum Alloys HEAT TREATING in its broadest sense, • Aluminum-copper-magnesium systems The mechanism of strengthening from refers to any of the heating and cooling (magnesium intensifies precipitation) precipitation involves the formation of co- operations that are performed for the pur- • Aluminum-magnesium-silicon systems herent clusters of solute atoms (that is, the pose of changing the mechanical properties, with strengthening from Mg2Si solute atoms have collected into a cluster the metallurgical structure, or the residual • Aluminum-zinc-magnesium systems with but still have the same crystal structure as stress state of a metal product. When the strengthening from MgZn2 the solvent phase). This causes a great deal term is applied to aluminum alloys, howev- • Aluminum-zinc-magnesium-copper sys- of strain because of mismatch in size be- er, its use frequently is restricted to the tems tween the solvent and solute atoms. Conse- specific operations' employed to increase quently, the presence of the precipitate par- strength and hardness of the precipitation- The general requirement for precipitation ticles, and even more importantly the strain hardenable wrought and cast alloys. These strengthening of supersaturated solid solu- fields in the matrix surrounding the coher- usually are referred to as the "heat-treat- tions involves the formation of finely dis- ent particles, provide higher strength by able" alloys to distinguish them from those persed precipitates during aging heat treat- obstructing and retarding the movement of alloys in which no significant strengthening ments (which may include either natural aging dislocations. -
Microalloyed Structural Plate Rolling Heat Treatment and Applications
MICROALLOYED STRUCTURAL PLATE ROLLING HEAT TREATMENT AND APPLICATIONS A. Streisselberger, V. Schwinn and R. Hubo AG der Dillinger Huettenwerke 66748 Dillingen, Germany Abstract Structural plates with a superior combination of mechanical properties and weldability are the result of a synergistic effect of microalloyed low carbon equivalent composition plus sophisticated thermo-mechanical control process variants or heat treatment during production in the plate mill. The paper considers both the production routes of such plate and the applications based on the beneficial type of microstructure and property profile. Introduction At the beginning of the 21st century sophisticated materials are used in the challenging field of civil engineering, construction and architecture. As an important type of material modern structural heavy plates are considered in this paper in terms of their development, production and use. The understanding of the role of microstructural features in relation to alloying elements, in particular microalloying elements, will be explored. In addition the exploitation of modern facilities in a plate mill, the tayloring of property combinations and the resulting possibilities for the construction industries are explained and illustrated with selected examples. Production of Structural Plates Requirements Made on the Plate Production Process The following requirements are generally made on heavy plate: It must possess: · The specified dimensions within narrow tolerances and with good flatness (thicknesses may range from 5 to 500mm and widths from around 1 to 5m ); · The yield and tensile strength required by the designers (yield strengths from around 235N/mm² to above 1100N/mm² can be specified); · The toughness required by designers which may include low temperature; · Ease the fabrication (e.g. -
Rolling Temperatures on Sticking Behavior of Ferritic Stainless Steels
ISIJ International, Vol. 38 (1998), No. 7, pp. 739-743 Effect of Roll and Rolling Temperatures on Sticking Behavior of Ferritic Stainless Steels WonJIN. Jeom-YongCHOIand Yun-YongLEE Stainless Steel Research Team, Technical Research Laboratories, Pohanglron & Steel Co,, Ltd.. PohangP.O. Box 36, 1, Koedong-dong, Pohang-shi. Kyungbuk, Korea, E-mail: pc543552@smail,posco.kr (Received on December5. 1997.• accepted in final form on February 23. 1998) The sticking behavior of several austenitic and ferritic stainless steels under the hot roiling conditions wasexaminedin detail using a two disk type hot rolling simulator. Thesticking of bare metal to roll surfaces wasstrong!y dependenton the high temperature tensile strength and the oxidation resistance of the stainless steel, Asteel having higher tensile strength and lower oxidation resistance exhibited better resistance against sticking. The sticking occurred in increasing severity in the order of 430J1 L, 436L, 430 and 409L. It was clarified that a high speedsteel (HSS) rol[ wasmorebeneficial to prevent sticking compared to a Hi-Cr roll. KEYWORDS: ferritic stainless steel; sticking behavior; hot rolling; high speedsteel roll; high chromiumroll. l. Introduction 2. Experiments Thesticking phenomenonoccurs frequently during the A sticking simulator wasused to investigate the effect hot rolling of ferritic stainless steels, causing surface of hot rolling conditions on sticking behavior. Figure 1 defects on the mill product andscoring on the roll surface. showsthe schematic diagram of the sticking -
H-Shaped Steel Manufacturing Technology
NIPPON STEEL & SUMITOMO METAL TECHNICAL REPORT No. 111 MARCH 2016 Technical Report UDC 621 . 771 . 261 - 423 . 1 H-shaped Steel Manufacturing Technology Eiji SAIKI* Katsuya MATSUDA Abstract The outline of the H-shaped steel manufacturing technologies of Nippon Steel & Sumitomo Metal Corporation is introduced. Compared with the conventional technologies of manufactur- ing general H-shaped steel, the technologies introduced here are characterized by four features for producing H-shaped steel of various dimensions with high efficiency. The features enable the production of H-shaped steel having (1) different web height dimensions without any sig- nificant difficulty using a pair of skewed rolls and free size finishing rolls (barrel-length adjust- able finishing rolls), (2) high flange/web thickness ratio using rolling temperature control tech- nology, (3) different flange width without changing edging rolls using free-size edging rolls (caliber-depth adjustable edging rolls), and (4) enable production of a variety of sizes of H- shaped steel from a single rectangular cross-sectional material using sizing rolling technology. 1. Introduction exists a limit in the size range of producible H-shaped steel because The conventional rolling method of H-shaped steel comprises of internal stress caused by the temperature difference within a sec- the process of, as shown in Fig. 1, shaping a material heated in a re- tion developed by a difference in the transition of temperature dur- heating furnace to a beam blank shape by a roughing mill, shaping ing rolling, which causes web buckling when it grows excessively to the final product size by reducing the flange and web thicknesses large. -
Boilermaking Manual. INSTITUTION British Columbia Dept
DOCUMENT RESUME ED 246 301 CE 039 364 TITLE Boilermaking Manual. INSTITUTION British Columbia Dept. of Education, Victoria. REPORT NO ISBN-0-7718-8254-8. PUB DATE [82] NOTE 381p.; Developed in cooperation with the 1pprenticeship Training Programs Branch, Ministry of Labour. Photographs may not reproduce well. AVAILABLE FROMPublication Services Branch, Ministry of Education, 878 Viewfield Road, Victoria, BC V9A 4V1 ($10.00). PUB TYPE Guides Classroom Use - Materials (For Learner) (OW EARS PRICE MFOI Plus Postage. PC Not Available from EARS. DESCRIPTORS Apprenticeships; Blue Collar Occupations; Blueprints; *Construction (Process); Construction Materials; Drafting; Foreign Countries; Hand Tools; Industrial Personnel; *Industrial Training; Inplant Programs; Machine Tools; Mathematical Applications; *Mechanical Skills; Metal Industry; Metals; Metal Working; *On the Job Training; Postsecondary Education; Power Technology; Quality Control; Safety; *Sheet Metal Work; Skilled Occupations; Skilled Workers; Trade and Industrial Education; Trainees; Welding IDENTIFIERS *Boilermakers; *Boilers; British Columbia ABSTRACT This manual is intended (I) to provide an information resource to supplement the formal training program for boilermaker apprentices; (2) to assist the journeyworker to build on present knowledge to increase expertise and qualify for formal accreditation in the boilermaking trade; and (3) to serve as an on-the-job reference with sound, up-to-date guidelines for all aspects of the trade. The manual is organized into 13 chapters that cover the following topics: safety; boilermaker tools; mathematics; material, blueprint reading and sketching; layout; boilershop fabrication; rigging and erection; welding; quality control and inspection; boilers; dust collection systems; tanks and stacks; and hydro-electric power development. Each chapter contains an introduction and information about the topic, illustrated with charts, line drawings, and photographs. -
BULK DEFORMATION PROCESSES in METALWORKING Introduction 1
Introduction BULK DEFORMATION • Input: bulk materials in a form of cylindrical bars PROCESSES IN and billets, rectangular billets and slabs or METALWORKING elementary shapes • Process: large plastic deformation - Rolling, 1. Rolling Forging, Extrusion and Wire and Bar drawing 2. Forging under cold, warm and hot working conditions 3. Extrusion • Output: work materials for subsequent processes or final products (net shaping) 4. Wire and Bar Drawing 1 2 1. Rolling Process Information • Thickness of a work material is reduced by the • Cold Rolling compressive forces exerted by two opposing rolls. • Ingot casting – Input: Molten metal – tight tolerance, better – plates (>6mm or 1/4 in) - ship hull, bridge surface and mechanical – sheets (<6mm) - car bodies, appliance – Output: Ingot properties – foil (<0.1mm) - aluminum foil • Soaking • Hot Rolling • Flat (typical) and shape rolling – Input: Ingot – above recrystallization temp. • Equipment: roll mills (expansive) – Output: heated Ingot (450C for Al alloy, 1250C for steel alloy and 1650C for • Hot rolling – large deformation, low force, no residual • Rolling refractory alloy) converts the stress and isotropic properties but problems with – Input: Heated Ingot cast structure to a wrought tolerance and surface finish – Output: bloom, billet or structure slab • Cold Rolling - strengthen, tight tolerance, better surface – Heavy scale forms on the surface. 3 4 Flat rolling Spreading: Conservation of Mass Rolling Analysis I • Friction at the entrance controls the maximum possible draft. towo Lo = t f wf L f dmax = maximum draft (mm); vr or towovo = t f wf v f 2 µ = the coefficient of friction; dmax = µ R where R R = Roll Radius (mm) Draft: d = to − t f θ d • It however depending on lubrication, work and roller materials Reduction:r = and temperature. -
John Dahlgren the Plymouth Rifle
JOHN DAHLGREN And THE PLYMOUTH RIFLE Marc Gorelick, VGCA The author thanks Tim Prince of College Hill Arsenal (www.collegehillarsenal.com) and Cliff Sophia of CS Arms (www.csarms.com) for the use of their photographs. Few Americans today know who John Dahlgren was, or the role he played in the Civil War. Most Civil War and navy history buffs who recognize his name identify him as a Union Admiral and ordnance expert who developed a number of naval cannon. Indeed, for his achievements in developing naval cannon he became known as the “father of American naval ordnance.” But to the gun collecting community Dahlgren was also a small arms expert and the inventor of the unique Plymouth Rifle. Photo courtesy Tim Prince, College Hill Arsenal, www.collegehillarsenal.com DAHLGREN’S NAVY CAREER John Adolphus Bernard Dahlgren was born on November 13, 1809 in Philadelphia, the son of Bernhard Ulrik Dahlgren, the Swedish Consul in Philadelphia. Like another Swedish-American, John Ericsson, the inventor of the screw propeller, turret and ironclad monitor, Dahlgren was to have a profound effect on the U.S. Navy. Dahlgren joined the United States Navy in 1826 as a midshipman. He served in the U.S. Coastal Survey from 1834 to 1837 where he developed his talents for mathematics and scientific theory. He was promoted to lieutenant, and after a number of cruises was assigned as an ordnance officer at the Washington Navy Yard in 1847. Dahlgren was in his element as an ordnance officer. He excelled as a brilliant engineer and was soon given more and more responsibility. -
Semiautomatic, Magazine Fed, Recoil Operated, Double Action Pistol 2
Section 109 & 110 Terms List 1. M9 service pistol: semiautomatic, magazine fed, recoil operated, double action pistol 2. M16A4 service rifle: lightweight, gas-operated, air-cooled, magazine-fed, shoulder-fired weapon 3. M4 Super 90(M1014) Shotgun: semi-automatic, fixed magazine tube, uses the ARGO (Auto Regulating Gas Operated) Twin Operating System, with rotating bolt head and dual locking lugs 4. M67 grenade: used to produce casualties by high velocity projection of fragment 5. M203 grenade launcher: Lightweight, single shot, breech-loaded, pump action (sliding barrel), shoulder-fired weapon, attached to either an M16A1 or an M16A2 rifle 6. M249 Squad Automatic Weapon (SAW): gas-operated, air-cooled, belt or magazine-fed, automatic weapon fires from the open-bolt position. 7. M240G machine gun: air cooled, belt fed, gas operated, automatic weapon fires from the open bolt position 8. M2 50 CAL machine gun: belt-fed, recoil-operated, air-cooled, crew-served machine gun, capable of single shot as well as automatic fire. 9. MK19 machine gun: self-powered, air-cooled, belt-fed, blowback operated weapon designed to deliver accurate, intense, and decisive firepower against enemy personnel and lightly armored vehicles 10. Rifle Combat Optic (RCO): a fixed 4X optical aiming sight designed for use with the service rifle configured with the MIL-STD-1913 Rail Adapter System 11. Off-center Vision Method: The technique of viewing an object using daytime central vision is ineffective at night. 12. Scanning Method: Enables the Marines to overcome many of the physiological limitations of their eyes. It can also reduce confusing visual illusions 13. -
RETAY ARMS Receives U.S. Patent Approval for Innovative Rotating Bolt System
6-21-2018 Contact: Christian Handy T.Ferney & Co. LLC - DBA RETAY USA 12145 Darnestown Road #452 Gaithersburg, MD 20878 Tel: 919-617-1821 Email: [email protected] Website: www.retayusa.com FOR IMMEDIATE RELEASE RETAY ARMS Receives U.S. Patent Approval For Innovative Rotating Bolt System The innovation of the “Click Free” bolt system has been officially recognized in US PATENT 9,995,542 and is currently available in the Retay Inertia Plus ™ system. WASHINGTON D.C. June 20, 2018 - RETAY ARMS LTD. STI. of Konya Turkey announces that on June 12, 2018 the United States Patent and Trademark Office issued PATENT 9,995,542 for “Rotating head assembly for use with the bolt assembly of a gun” in recognition of RETAY’s innovation of a rotating bolt head system that prevents the unintended unlocking of the bolt head from the breach of a firearm. RETAY began developing its rotating bolt system in an effort to achieve a more reliable rotating bolt head for use in semi-automatic firearms. For decades the traditional kinetic energy powered rotating bolt system has enjoyed popularity for its simple design and ease of maintenance however, the original design was plagued by a tendency of the bolt head to unintentionally unlock from the breach of the firearm when it was jarred by walking over rough terrain or by the impact of setting the firearm down. The resulting unlocking would often go unnoticed by the operator and cause a misfire. To prevent a misfire, the operator would have to first be aware of the state of the bolt and then manually re-engage the action which cost time and unnecessary noise that could startle game.