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Robert Forester Mushet
Robert Forester Mushet (8 April 1811 – 29 January 1891) was a British metallurgist and businessman, born on 8 April 1811, in Coleford, in the Forest of Dean, Gloucestershire, England. He was the youngest son of Scottish parents, Agnes Wilson and David Mushet; an ironmaster, formerly of the Clyde, Alfreton and Whitecliff Ironworks. In 1818/1819, David Mushet built a foundry named Darkhill Ironworks in the Forest of Dean. Robert spent his formative years studying metallurgy with his father and took over the management of Darkhill in 1845. Anstis p. 85. In 1848, he moved to the newly constructed Forest Steel Works on the edge of the Darkhill site where he carried out over ten thousand experiments in ten years Anstis p. 157 before moving to the Titanic Steelworks in 1862. It seems that Mushet only began using his middle name 'Forester' in 1845, and only occasionally at first. In his later years he said he had been given the name from the Forest of Dean, although he variously ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coleford, Gloucestershire
Coleford is a market town in the west of the Forest of Dean, Gloucestershire, England, east of the Welsh border and close to the Wye Valley. It is the administrative centre of the Forest of Dean district. The combined population of the town's two electoral wards at the 2011 census was 8,359. The population of the town's parish was 9,273 in the 2021 Census. The parish includes the village of Baker's Hill. History Coleford was originally a tithing in the north-east corner of Newland parish. The settlement arose at a ford through which charcoal and iron ore were probably carried. By the mid-14th century, hamlets called Coleford and Whitecliff had grown up in the valley of Thurstan's Brook. Coleford had eight or more houses in 1349 and was described as a street in 1364. It had a place of worship by 1489. In 1642 the commander of a parliamentary garrison in Coleford started a market in the town, as the nearest chartered market in Monmouth was under royalist control. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rail Profile
The rail profile is the cross-sectional shape of a Railway track#Rail, rail as installed on a railway or railroad, perpendicular to its length. Early rails were made of wood, cast iron or wrought iron. All modern rails are hot rolled steel with a cross section Profile (engineering), (profile) approximate to an I-beam, but asymmetric about a horizontal axis (however see #Grooved rail, grooved rail below). The head is profiled to resist wear and to give a good ride, and the foot profiled to suit the fixing system. Unlike some other uses of iron and steel, railway rails are subject to very high stresses and are made of very high quality steel. It took many decades to improve the quality of the materials, including the change from iron to steel. Minor flaws in the steel that may pose no problems in other applications can lead to broken rails and dangerous derailments when used on railway tracks. By and large, the heavier the rails and the rest of the track work, the heavier an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Businesspeople In Steel
A businessperson, also referred to as a businessman or businesswoman, is an individual who has founded, owns, or holds shares in (including as an angel investor) a private-sector company. A businessperson undertakes activities (commercial or industrial) to generate cash flow, sales, and revenue by using a combination of human, financial, intellectual, and physical capital to fuel economic development and growth. History Medieval period: Rise of the merchant class Merchants emerged as a social class in medieval Italy. Between 1300 and 1500, modern accounting, the bill of exchange, and limited liability were invented, and thus, the world saw "the first true bankers", who were certainly businesspeople. Around the same time, Europe saw the " emergence of rich merchants." This "rise of the merchant class" came as Europe "needed a middleman" for the first time, and these "burghers" or "bourgeois" were the people who played this role. Renaissance to Enlightenment: Rise of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1891 Deaths
Events January * January 1 ** A strike of 500 Hungarian steel workers occurs; 3,000 men are out of work as a consequence. **Germany takes formal possession of its new African territories. * January 4 – The Earl of Zetland issues a declaration regarding the famine in the western counties of Ireland. * January 5 **The Australian shearers' strike, that leads indirectly to the foundation of the Australian Labor Party, begins. **A fight between the United States and Lakotas breaks out near Pine Ridge agency. **A fight between railway strikers and police breaks out at Motherwell, Scotland. * January 7 ** General Miles' forces surround the Lakota in the Pine Ridge Reservation. ** The Inter-American Monetary Commission meets in Washington DC. * January 9 – The great shoe strike in Rochester, New York is called off. * January 10 – in France, the Irish Nationalist leaders hold a conference at Boulogne. The French government promptly takes loan. * J ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1811 Births
Events January–March * January 8 – An 1811 German Coast Uprising, unsuccessful slave revolt is led by Charles Deslondes, in St. Charles and St. James Parishes, Louisiana. * January 17 – Mexican War of Independence – Battle of Calderón Bridge: A heavily outnumbered Spanish force of 6,000 troops defeats nearly 100,000 Mexican revolutionaries. * January 22 – The Juan Bautista de las Casas, Casas Revolt begins in San Antonio, Spanish Texas. * February 5 – British Regency: George IV of the United Kingdom, George, Prince of Wales becomes prince regent, because of the perceived insanity of his father, King George III of the United Kingdom. * February 19 – Peninsular War – Battle of the Gebora: An outnumbered French force under Édouard Mortier, duc de Trévise, Édouard Mortier routs and nearly destroys the Spanish, near Badajoz, Spain. * March 1 – Citadel Massacre in Cairo: Egyptian ruler Muhammad Ali of Egypt, Muhammad Al ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spathic Iron Ore
Siderite is a mineral composed of iron(II) carbonate (FeCO3). Its name comes from the Ancient Greek word (), meaning "iron". A valuable iron ore, it consists of 48% iron and lacks sulfur and phosphorus. Zinc, magnesium, and manganese commonly substitute for the iron, resulting in the siderite-smithsonite, siderite-magnesite, and siderite-rhodochrosite solid solution series. Siderite has Mohs hardness of 3.75 to 4.25, a specific gravity of 3.96, a white streak and a vitreous or pearly luster. Siderite is antiferromagnetic below its Néel temperature of that can assist in its identification. It crystallizes in the trigonal crystal system; crystals are rhombohedral in shape, typically with curved and striated faces. It also occurs in masses. Color ranges from yellow to dark brown or black, the latter being due to the presence of manganese. Siderite is commonly found in hydrothermal veins, and is associated with barite, fluorite, galena, and others. It is also a common diagen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crucible Steel
Crucible steel is steel made by melting pig iron, cast iron, iron, and sometimes steel, often along with sand, glass, ashes, and other fluxes, in a crucible. Crucible steel was first developed in the middle of the 1st millennium BCE in Southern India and Sri Lanka using the wootz process. In ancient times, it was not possible to produce very high temperatures with charcoal or coal fires, which were required to melt iron or steel. However, pig iron, having a higher carbon content and thus a lower melting point, could be melted, and by soaking wrought iron or steel in the liquid pig-iron for a long time, the carbon content of the pig iron could be reduced as it slowly diffused into the iron, turning both into steel. Crucible steel of this type was produced in South and Central Asia during the medieval era. This generally produced a very hard steel, but also a composite steel that was inhomogeneous, consisting of a very high-carbon steel (formerly the pig-iron) and a lower ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
High Speed Steel
High-speed steel (HSS or HS) is a subset of tool steels, commonly used as cutting tool material. Compared to high-carbon steel tools, high-speed steels can withstand higher temperatures without losing their temper (hardness), allowing use of faster cutting speeds. At room temperature, in their generally recommended heat treatment, HSS grades generally display high hardness (above 60 Rockwell C) and abrasion resistance compared with common carbon and tool steels. There are several different types of high speed steel, such as M42 and M2. History In 1868, English metallurgist Robert Forester Mushet developed Mushet steel, considered the forerunner of modern high-speed steels. It consisted of 2% carbon, 2.5% manganese, and 7% tungsten. The major advantage of this steel was that it hardened when air cooled from a temperature at which most steels had to be quenched for hardening. Over the next 30 years, the most significant change was the replacement of manganese with chromium ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Machine Tools
A machine tool is a machine for handling or machining metal or other rigid materials, usually by cutting, boring, grinding, shearing, or other forms of deformations. Machine tools employ some sort of tool that does the cutting or shaping. All machine tools have some means of constraining the workpiece and provide a guided movement of the parts of the machine. Thus, the relative movement between the workpiece and the cutting tool (which is called the toolpath) is controlled or constrained by the machine to at least some extent, rather than being entirely "offhand" or " freehand". It is a power-driven metal cutting machine which assists in managing the needed relative motion between cutting tool and the job that changes the size and shape of the job material. The precise definition of the term ''machine tool'' varies among users. While all machine tools are "machines that help people to make things", not all factory machines are machine tools. Today machine tools are typically ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Air-hardening Steel
Tool steel is any of various carbon steels and alloy steels that are particularly well-suited to be made into tools and tooling, including cutting tools, dies, hand tools, knives, and others. Their suitability comes from their distinctive hardness, resistance to abrasion and deformation, and their ability to hold a cutting edge at elevated temperatures. As a result, tool steels are suited for use in the shaping of other materials, as for example in cutting, machining, stamping, or forging. Tool steels have a carbon content between 0.4% and 1.5%. The presence of carbides in their matrix plays the dominant role in the qualities of tool steel. The four major alloying elements that form carbides in tool steel are: tungsten, chromium, vanadium and molybdenum. The rate of dissolution of the different carbides into the austenite form of the iron determines the high-temperature performance of steel (slower is better, making for a heat-resistant steel). Proper heat treatment of these ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tool Steel
Tool steel is any of various carbon steels and alloy steels that are particularly well-suited to be made into tools and tooling, including cutting tools, dies, hand tools, knives, and others. Their suitability comes from their distinctive hardness, resistance to abrasion and deformation, and their ability to hold a cutting edge at elevated temperatures. As a result, tool steels are suited for use in the shaping of other materials, as for example in cutting, machining, stamping, or forging. Tool steels have a carbon content between 0.4% and 1.5%. The presence of carbides in their matrix plays the dominant role in the qualities of tool steel. The four major alloying elements that form carbides in tool steel are: tungsten, chromium, vanadium and molybdenum. The rate of dissolution of the different carbides into the austenite form of the iron determines the high-temperature performance of steel (slower is better, making for a heat-resistant steel). Proper heat treatme ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mushet Steel
Mushet steel, also known as Robert Mushet's Special Steel and, at the time of its use, self-hardening steel and air-hardening steel,. is considered to be both the first tool steel and the first air-hardening steel.. It was invented in 1868 by Robert Forester Mushet. Prior to Mushet steel, steel had to be quenched to harden it. It later led to the discovery of high-speed steel. Discovery In 1868 Mushet was asked to produce on contract a new type of cast steel invented by a Glasgow manufacturer. The cast steel proved too brittle to be of use for cutting tools, but it spurred Mushet to experiment with various new alloys. A crucible steel made from tungsten ore and iron ore rich in manganese turned out to hold a cutting edge better than any carbon steel. An additional property, that was completely unexpected at the time, was that this new alloy would harden when left to cool in air after forging rather than needing to be quenched. Mushet opted to keep the composition and production ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
