Introduction
Robert Forester Mushet, was a metallurgical English engineer.
He was born April 8, 1811, in Coleford, Forest of Dean, Gloucestershire.
The son of Scottish parents, David Mushet and Agnes Wilson, begins' to work first in the steel Clyde, Alfreton and Whitcliffe, and later dedicated, since 1819, extensive studies of metallurgy with the father, and to work with him at the steel of family Darkhill, in the Forest of Dean.
Brief David Mushet
David Mushet (1772-1847), was a metallurgical engineer, son of Margaret and William Cochran Mushet.
In 1800, brevetto'un processing method known as cast steel or steel Cast Steel.
The technical description of the procedure is this.
In 1801 incomincio'a build a steel plant of its propieta'nella Forest of Dean, as the trees could get the cheap coal.
In 1815 invento'un new method for refining steel with a type of converter, called, precisely, Mushet.
The steel produced in this way was sold to the knife of Sheffield, which were obtained by David Mushet good razors used routinely.
Mushet family tree:
life of Robert Forester Mushet
In 1845 Robert Mushet took over his father's steel mill located Darkhill.
In 1848 he moved 'to a few hundred meters to the west from there' or in a new steel plant (whose remains are still visible), the Forest Steel Works.
Here, in just 10 years, do thousand experiments on the treatment of steels.
It was for her to remain long in this place that he was then also renamed as the Forester.
The creation of high quality steel '
In the summer of 1848, Henry Burgess, a colleague of Robert Mushet, invio'a him a piece of machined steel with iron extracted in Prussia at the time, near the Rhine.
Mushet, studying the find, annoto'e reached the following conclusions:
"The finding is the result of a material composed of iron and manganese.
Iron is Calciform (double carbonate of iron), spatoso white, with the presence of manganese.
This mineral has a strong presence in the mountains of the Rhineland.
Melted in small blast furnaces, the material is placed inside the molds in ovens cosi'da form of billets that, if broken, shows bright facets.
To a chemical, the compound is made up of:
25-86% Iron 0.8 to 50% of manganese, carbon and 5-25%. "
The material was poor, because of impurita'del ferro.The Mushet converter builded by the Mushet'sfather was able to burn them, but also burns the carbon that hardens steel.
Over time and after spending thousands of pounds, and his friend Robert Mushet Bessemer, they knew that could easily burn the impurities' and the carbon with the drive and then re-introduce the last item with the MN to get a good steel.
Unfortunately not Mushet never fully enjoyed the benefits of his invention, as is Henry Bessemer accaparro'tutti rights until a daughter of Robert, Mary, gave him cause.
This was only one, of the many unpleasant vicissitudes, in which the family incurred Mushet.
The Dozzle
When a steel solidifies in a mold, cooling causes an irregular cavita'centrale named pipe, especially in the case of Cast Steel.
In 1861 Robert Mushet invented 'the Dozzle, or a cone of clay, heated to high temperatures, and inserted into the mold when he was cast in almost all filled by steel casting.
It formed cosi'un tank drained all stainless casting until it is cool.
Mushet Steel
In 1868 Robert Mushet inseri'come alloying element in its steel, in addition to manganese, including the Tungsten (8%).
Here you will find more information.
It 's a non-magnetic steel, self-hardening, which was resistant to confound both used to work "high speed" and cut through other steels, metals and materials.
It 'was the first steel to be heated almost to its melting point (bright red), affiche' after quenching and tempering the resulting material was more 'resistant.
Robert Mushet died 'Jan. 19, 1891 at Chelthenam and was buried there with his wife.
link:
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Sheffield steel
Sheffield steel processing
The forging process now will describe 'was improved by Taylor (n.668269 patent, filed Feb. 19, 1901).
First heat treatment.
The process involves heating the tool almost forged at a temperature slightly lower than its melting point.
As a result it is left to cool slowly (at 860 degrees, above the highest point of fragility '), then it warms up again to 640 degrees or so.
Before all that, 'the steel to be transformed into tool is heated to 815 degrees, until it assumes a pale cherry red.
Maintaining you run it at a temperature of 640 degrees in a lead bath.
Finally, with other oil bath, wear the piece at room temperature.
Second heat treatment.
The second heat treatment, the tool is to heat the water at a temperature of 690 degrees for five minutes and then slowly cooled air.
These chromium-tungsten, when treated in this way show a hard red, or not to confound temerature even close to their melting point.
Robert Forester Mushet, was a metallurgical English engineer.
He was born April 8, 1811, in Coleford, Forest of Dean, Gloucestershire.
The son of Scottish parents, David Mushet and Agnes Wilson, begins' to work first in the steel Clyde, Alfreton and Whitcliffe, and later dedicated, since 1819, extensive studies of metallurgy with the father, and to work with him at the steel of family Darkhill, in the Forest of Dean.
Brief David Mushet
David Mushet (1772-1847), was a metallurgical engineer, son of Margaret and William Cochran Mushet.
In 1800, brevetto'un processing method known as cast steel or steel Cast Steel.
The technical description of the procedure is this.
In 1801 incomincio'a build a steel plant of its propieta'nella Forest of Dean, as the trees could get the cheap coal.
In 1815 invento'un new method for refining steel with a type of converter, called, precisely, Mushet.
The steel produced in this way was sold to the knife of Sheffield, which were obtained by David Mushet good razors used routinely.
Mushet family tree:
life of Robert Forester Mushet
In 1845 Robert Mushet took over his father's steel mill located Darkhill.
In 1848 he moved 'to a few hundred meters to the west from there' or in a new steel plant (whose remains are still visible), the Forest Steel Works.
Here, in just 10 years, do thousand experiments on the treatment of steels.
It was for her to remain long in this place that he was then also renamed as the Forester.
The creation of high quality steel '
In the summer of 1848, Henry Burgess, a colleague of Robert Mushet, invio'a him a piece of machined steel with iron extracted in Prussia at the time, near the Rhine.
Mushet, studying the find, annoto'e reached the following conclusions:
"The finding is the result of a material composed of iron and manganese.
Iron is Calciform (double carbonate of iron), spatoso white, with the presence of manganese.
This mineral has a strong presence in the mountains of the Rhineland.
Melted in small blast furnaces, the material is placed inside the molds in ovens cosi'da form of billets that, if broken, shows bright facets.
To a chemical, the compound is made up of:
25-86% Iron 0.8 to 50% of manganese, carbon and 5-25%. "
The material was poor, because of impurita'del ferro.The Mushet converter builded by the Mushet'sfather was able to burn them, but also burns the carbon that hardens steel.
Over time and after spending thousands of pounds, and his friend Robert Mushet Bessemer, they knew that could easily burn the impurities' and the carbon with the drive and then re-introduce the last item with the MN to get a good steel.
Unfortunately not Mushet never fully enjoyed the benefits of his invention, as is Henry Bessemer accaparro'tutti rights until a daughter of Robert, Mary, gave him cause.
This was only one, of the many unpleasant vicissitudes, in which the family incurred Mushet.
The Dozzle
When a steel solidifies in a mold, cooling causes an irregular cavita'centrale named pipe, especially in the case of Cast Steel.
In 1861 Robert Mushet invented 'the Dozzle, or a cone of clay, heated to high temperatures, and inserted into the mold when he was cast in almost all filled by steel casting.
It formed cosi'un tank drained all stainless casting until it is cool.
Mushet Steel
In 1868 Robert Mushet inseri'come alloying element in its steel, in addition to manganese, including the Tungsten (8%).
Here you will find more information.
It 's a non-magnetic steel, self-hardening, which was resistant to confound both used to work "high speed" and cut through other steels, metals and materials.
It 'was the first steel to be heated almost to its melting point (bright red), affiche' after quenching and tempering the resulting material was more 'resistant.
Robert Mushet died 'Jan. 19, 1891 at Chelthenam and was buried there with his wife.
link:
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Sheffield steel
Sheffield steel processing
The forging process now will describe 'was improved by Taylor (n.668269 patent, filed Feb. 19, 1901).
First heat treatment.
The process involves heating the tool almost forged at a temperature slightly lower than its melting point.
As a result it is left to cool slowly (at 860 degrees, above the highest point of fragility '), then it warms up again to 640 degrees or so.
Before all that, 'the steel to be transformed into tool is heated to 815 degrees, until it assumes a pale cherry red.
Maintaining you run it at a temperature of 640 degrees in a lead bath.
Finally, with other oil bath, wear the piece at room temperature.
Second heat treatment.
The second heat treatment, the tool is to heat the water at a temperature of 690 degrees for five minutes and then slowly cooled air.
These chromium-tungsten, when treated in this way show a hard red, or not to confound temerature even close to their melting point.
