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Articles 2071 - 2100 of 2218
Full-Text Articles in Materials Science and Engineering
A Treatise On The Use Of Insulating Refractory Brick In Malleable Annealing Ovens, James Joseph Offutt
A Treatise On The Use Of Insulating Refractory Brick In Malleable Annealing Ovens, James Joseph Offutt
Professional Degree Theses
"At frequent intervals, there is developed in the refractory field some product which serves to keep this branch of industry in line in the fast moving modern era. The advent of such materials as high temperature mortars and high alumina, super refractories provided a definite mark of progress. One of the most recent and far reaching developments was made possible by the perfection of light weight, insulating fire brick. This product filled a gap which had long been an aching void to all who had made a careful study of furnaces in an effort to obtain higher efficiency. Formerly, it …
Roofing Granules, Morris Harold Grober
Roofing Granules, Morris Harold Grober
Bachelors Theses
"An abundant amount of chats and clays of various kinds is available in Missouri. In the mining districts of south-eastern and south-western Missouri enormous piles of gang known as chats have accumulated. The mining companies desire to rid themselves of this accumulation and would dispose of the chats at a very low price. In northern Missouri and in the diaspore district of central Missouri suitable clays could be found which may be had for a small royalty, mining and transportation costs. Some of the requirements for roofing granules are that they have (1) a size limited by 10 and 30 …
The Use Of Phosphoric Acid As A Pickling Reagent For Enamels, Alan John Hoener
The Use Of Phosphoric Acid As A Pickling Reagent For Enamels, Alan John Hoener
Bachelors Theses
"A review of the available literature reveals that no one has used phosphoric acid for pickling sheet steel for enameling purposes. Articles have been published indicating the corrosive action of phosphoric acid, but these investigations were carried out in an attempt to find an alloy that would resist the corrosive action of the acid"--Introduction, page 1.
The Effect Of Ammonium Carbonate And Aluminum Chloride On The Porosity Of Refractory Material, William Gail Twyman
The Effect Of Ammonium Carbonate And Aluminum Chloride On The Porosity Of Refractory Material, William Gail Twyman
Bachelors Theses
"At the present time there are many insulating materials on the market. The temperatures at which these may be utilized vary from the lower temperature range of 100 degrees C, to a high temperature range of 2800 degrees C. Those insulating materials falling in the class of low temperature insulators have very little usage in commercial manufacturing processes therefore they will not be discussed in this paper. Materials that have a range from 600 degrees C to 2800 degrees C are of vital importance to the manufacturing processes. It is this type of material which we will endeavor to discuss …
The Suitability Of An Electric Glo-Bar Furnace For The Hot Load Test On Refractories, Paul Curtis Branstetter
The Suitability Of An Electric Glo-Bar Furnace For The Hot Load Test On Refractories, Paul Curtis Branstetter
Bachelors Theses
"This investigation was carried out to determine, if possible, the suitability of the Glo-Bar furnace for the hot load test by comparing results obtained with the standard furnace with those obtained on the Glo-Bar furnace on different brands of refractories"--Scope of Investigation, page 2.
The Use Of Fluorspar As A Flux Ingredient In Ceramic Bodies, Edward Henry Frauenfelder
The Use Of Fluorspar As A Flux Ingredient In Ceramic Bodies, Edward Henry Frauenfelder
Bachelors Theses
"The term "flux" is a relative one and does not refer to any particular class of substances. A flux is any material which will lower the softening, fusion, or liquifying sic temperature of another Bases act as fluxes to siliceous substances while in basic compositions like Portland cement, silica is a flux. Feldspar is a flux for white ware mixtures, and is regarded as a refractory in the low temperature enamels. Although fluorspar is used in considerable quantities in many divisions of the ceramic industry, namely: the glassware division, the enamels division, and in the manufacture of cement, its use …
Red Glazes, Robert M. Springer
Red Glazes, Robert M. Springer
Bachelors Theses
"The object of this study was to produce a commercial red glaze at cone 3 from a base glaze of colemanite and steatite"--Scope of Investigation, page 3.
Austenite Grain-Size In Low-Carbon Steels And The Coercive Force Of Case Carburized Steels, Thomas Robert Graham
Austenite Grain-Size In Low-Carbon Steels And The Coercive Force Of Case Carburized Steels, Thomas Robert Graham
Masters Theses
"The objective of this investigation was to investigate the various methods for determining austenite grain-size and make a comparison of the results obtained by these methods"--Introduction, page 2.
The Effect Of Electrical Lubrication On The Transmission Of Pressure In Dry Pressed Bodies, Oliver William Kamper
The Effect Of Electrical Lubrication On The Transmission Of Pressure In Dry Pressed Bodies, Oliver William Kamper
Bachelors Theses
"One of the great problems facing the Ceramic industry today is the production of perfect brick by the dry press process. This problem has been of vital importance because of the physical defects obtained in the dry pressing operation due to the ununiform transmission of pressure in the ware produced. As a result of this ununiform transmission of pressure, strains, cracks, differential shrinkage, low strength, and laminations have been accentuated after the firing of the body. Pressure transmission is influenced by several factors: the size and shape of grog and clay grain, the time and duration of pressure application, the …
Development Of A Refractory Insulating Brick, Edwin Laughlin Dudley
Development Of A Refractory Insulating Brick, Edwin Laughlin Dudley
Bachelors Theses
"The method of bloating brick of low refractoriness has been accomplished by the addition of carbonates of the alkalines and alkaline earths which when acid is applied give off CO₂ to form a porous structure. It was thought that if a material which would not act as a flux might even enhance the refractoriness of the clay used a high temperature insulator might be produced which would compare favorably to those now produced by the use of volatiles. An aluminum salt which when combines with a non-metalic sic base that would generate a gas was selected. The aluminum in the …
The Use Of Missouri Halloysite As A Suspending Medium For Enamels, Collins H. Mcdonald
The Use Of Missouri Halloysite As A Suspending Medium For Enamels, Collins H. Mcdonald
Bachelors Theses
"The object of this study was to find if Missouri halloysite could be used satisfactorily to float enamel frits, preventing them from settling during the spraying or dipping operation, so as to get a uniform coating of proper thickness over the surface of the ware. Halloysite is a clay-like natural aluminum silicate resembling kaolinite, but containing a larger but uncertain amount of water. The material that was used in this investigation was found in Lawrence County, Missouri"--Object of Investigation, page 1.
A Comparison Of Florida, Georgia And G-1 Kaolin As The Chief Clay Ingredient For A Sanitary Ware Casting Body, George Armour Sellers
A Comparison Of Florida, Georgia And G-1 Kaolin As The Chief Clay Ingredient For A Sanitary Ware Casting Body, George Armour Sellers
Bachelors Theses
"The purpose of this investigation, originally, was to determine the suitability of substituting G-1 kaolin for Florida kaolin in a sanitary ware casting body. It was later extended to embrace a comparative study of Florida, Georgia and G-1 kaolin as the chief clay ingredient in a sanitary ware casting body"--Introduction, Purpose of the Investigation, page 1.
A New Theory Of The Spalling Of Fireclay Products With Relation To Thermal Expansion, Robert Legrande Stone
A New Theory Of The Spalling Of Fireclay Products With Relation To Thermal Expansion, Robert Legrande Stone
Bachelors Theses
"There is one factor that is responsible for much of the failure of refractories in furnaces and other metallurgical processes and boilers, namely spalling. Many times this action has been the cause of roofs to cave in, side walls to slump, and bungs to fail. Consequently it is a factor that is of utmost importance. The erosion and slag effects are also of greatest importance to refractory stability. Spalling, as referred to refractories, is defined as the breaking or crushing of the unit due to thermal, mechanical, or structural stresses, presenting newly exposed surfaces of the residual mass. Taking the …
The Effects Of Sodium, Barium And Calcium Chloride Upon The Physical Properties Of A Whiteware Body, William Newton Coffman
The Effects Of Sodium, Barium And Calcium Chloride Upon The Physical Properties Of A Whiteware Body, William Newton Coffman
Bachelors Theses
"The wide spread use of American kaolins and ball clays has been frowned upon by the majority of white-ware manufactures because the product resulting from their use in most cases has a color which is inferior to ware produced from English raw materials. This inferior color is generally attributed to the presence of a small amount of iron in the American clays. If some inexpensive chemical addition could be made which would eliminate the iron stain or in some way mask it, a wider market could be found in the white-ware industry for the domestic clays. One way to eliminate …
Aventurine Glazes, Felix Fraulini
Aventurine Glazes, Felix Fraulini
Bachelors Theses
"The object of this study was to notice the effect produced upon the crystalline growth in the glaze by the variation of B₂O₃, Fe₂O₃, and SiO₂, and to notice the effect of cooling upon the crystalline growth in the glaze"--Scope of Investigation, leaf 3.
The Effect Of Variations In The Rate Of Heating On The P.C.E. Value Of Clays, Kenneth Emerson Evans
The Effect Of Variations In The Rate Of Heating On The P.C.E. Value Of Clays, Kenneth Emerson Evans
Bachelors Theses
"Softening temperature of ceramic materials vary with the rate of heating. Recently much discussion has centered about the proper rate of heating of cones in the P.C.E. test. The most obvious reason for the discussion is that the cones are affected by the rate of heating when tested alone for softening temperature"--Introduction, page 1.
A Comparative Study Of The American Society For Testing Materials Spall Test And The Federal Specifications Spall Test, Justus Jordan Beinlich
A Comparative Study Of The American Society For Testing Materials Spall Test And The Federal Specifications Spall Test, Justus Jordan Beinlich
Bachelors Theses
"Commercial brands of fireclay brick will be tested with both the American Society for Testing Materials and the Federal Specifications Spall Tests in order to determine whether the two tests are consistent in the indication of resistance to spalling. It is suggested that the properties of a refractory affecting thermal spalling are reversible thermal expansion, elasticity, heat transfer, plastic flow, and strength. It is hoped that it will be possible to explain the discrepancies that may arise in the results of this work in terms of the above physical properties or else find a reasonable agreement between the two tests"--Introduction, …
Study Of The Substitution Of Barite For Barium Carbonate In A Whiteware Body Suitable For Brick Manufacture, Charles Edward Achuff
Study Of The Substitution Of Barite For Barium Carbonate In A Whiteware Body Suitable For Brick Manufacture, Charles Edward Achuff
Bachelors Theses
"Some years ago a method of manufacturing white brick from Georgia Kaolin and apatite rock was developed. This was successful for supplying an attractive white brick to the southern trade, until difficulties were encountered in securing apatite rock of sufficiently high grade to insure the continuance of manufacture of the brick...With the foregoing facts at hand, a study was made of the utilization of an auxiliary flux to replace the apatite rock. A commercial brick was developed, wherein eight (8) per cent of this flux, with forty-two (42) per cent potters flint and fifty (50) per cent Georgia Kaolin was …
The Replacement Of Calcium Carbonate With Calcium Chloride And Calcium Fluoride In A Whiteware Body, Charles Richard Rosenbaum
The Replacement Of Calcium Carbonate With Calcium Chloride And Calcium Fluoride In A Whiteware Body, Charles Richard Rosenbaum
Bachelors Theses
"In the steel industry it is a common metallurgical practice to add fluospar sic (CaF₂), to a slag to render it more fluid. Ladoo states that the fluospar sic , thus added, forms eutechtics with the silica, alumina, calcium and barium sulfates, rendering them more fusible. The fluospar sic does not decompose, but forms solutions or eutechtics with other substances in the slag. He further states that calcium chloride (CaCl₂) has been used for this purpose but is apparently not as active, necessitating larger quantities per charge. It is also probably more expensive. Calcium carbonate (CaCO₃) is commonly used as …
The Effect Of Reheating Certain Fire Brick On Pyrometric Cone Equivalents, Francis J. Louney
The Effect Of Reheating Certain Fire Brick On Pyrometric Cone Equivalents, Francis J. Louney
Bachelors Theses
"In a recent survey of the refractories field, especially with respect to the softening point of fire brick, it was suggested to the author that the possibility of reheating certain fire brick, according to the specifications given by the American Society for Testing Materials, might produce a difference in pyrometric cone equivalent from that of the original or unreheated sample. At present, there is considerable lack of knowledge regarding the problem, as evidenced by the utter lack of literature on the softening point resulting from the reheating of fire brick"--Introduction, leaf 1.
Pressure Transmission And Green Strength Of Clays As Affected By Time Of Ageing, William Thomas Kay
Pressure Transmission And Green Strength Of Clays As Affected By Time Of Ageing, William Thomas Kay
Bachelors Theses
"Perfect dry pressing could only be attained if the mix possessed the properties of water in so far as pressure transmission is concerned. There are many factors, however, which tend to interfere with the transmixxion sic of pressure in the clay block, such as, - Differences in grain size, friction between the grains, entrapped air, dragging of the clay on the sides of the mould box and many other minor causes. In an effort to solve some the problems that are of vital interest to the Dry Press industry, the Committee on Dry Press Process of the National Brick Manufacturers …
Die Steels And The Heat-Treatment Of Dies For Use In Die Casting Aluminum Base Alloys, Elmer Gammeter
Die Steels And The Heat-Treatment Of Dies For Use In Die Casting Aluminum Base Alloys, Elmer Gammeter
Professional Degree Theses
"Although the casting of metals is an ancient art, it was not until recent years that metals were cast in large quantities in metallic molds. The increasing demands on the industry for greater production brought about this change which essentially involves the introduction of molds capable of producing numerous castings in preference to the use of non-metallic molds which were destroyed in making the casting"--General Consideration of the Die Casting Process, page 1.
Development Of An Artificial Substitute For Firestone, Joseph Edwin Stevens
Development Of An Artificial Substitute For Firestone, Joseph Edwin Stevens
Bachelors Theses
"Firestone is a natural occurring silica rock which is cut up into brick and shapes and used for lining cupolas. This rock is found in the east, mostly in Pennsylvania. It is dense, having a porosity of 5.6% raw and 16% after firing to cone 18. Its volume expansion upon firing was calculated to be 19.2%. Its appearance shows that it is evidently fine grained silica bonded with a small amount of clay and siliceous cement. This rock has such desirable characteristics for use in cupola linings that it would be of great importance to duplicate this rock synthetically in …
The Effect Of Different Rates Of Ram Movement On The Transmission Of Pressure In Dry Pressed Bodies, Frank Joseph Zvanut
The Effect Of Different Rates Of Ram Movement On The Transmission Of Pressure In Dry Pressed Bodies, Frank Joseph Zvanut
Bachelors Theses
"The object of this investigation was to study the relationship between the rate of ram movement during the initial application of pressure and the transmission of pressure in the dry press process; to study the effect of various rates of ram movement; and, as far as possible, to determine the critical rate for uniform pressure distribution within the body"--Purpose of Investigation, page 4.
The Purification Of Missouri Fire Clays, James Joseph Offutt
The Purification Of Missouri Fire Clays, James Joseph Offutt
Bachelors Theses
"At the present time there appears to be an unlimited supply of high grade fire clay available for most any purpose. But some time in the future there will rise the problem of purifying the low grade clay to such an extent that it will be used in high grade fire clay products. Whatever purification method may be employed it must be applicable on a commercial scale and the cost of purification must be very low. Until the present time little if any work along this line has been reported. Apparently no one has ever attempted any serious efforts to …
The Effect Of Grain Sizing On The Strength And Porosity Of Refractory Grog Bodies, Robert Stafford Green
The Effect Of Grain Sizing On The Strength And Porosity Of Refractory Grog Bodies, Robert Stafford Green
Bachelors Theses
"The object of this work was to determine the effect of grain sizing on the strength and porosity of grog bodies. The investigation was carried out by the general method of making up bars of varying grain composition and testing them for strength and porosity"--page 1.
The Control Of Anode Corrosion, Edward Arthur Godat
The Control Of Anode Corrosion, Edward Arthur Godat
Masters Theses
"This particular study of the control of anode corrosion in connection with the production of zinc by electrolytic deposition from commercial solutions is a continuation of work started at the Missouri School of Mines and Metallurgy in 1929. It is not a new problem or even a new phase of the problem, but rather an attempt to confirm some of the ideas brought out in previous work and to perhaps more definitely establish some of the conclusions drawn from insufficient data, by more extensive tests and by attacking the problem from a slightly different angle"--Introduction, page 1.
Concentration Of An Oxidized Lead Ore From Southeast Missouri, Robert Edward Evans
Concentration Of An Oxidized Lead Ore From Southeast Missouri, Robert Edward Evans
Masters Theses
"In the main ore bodies of the Southeast Missouri Lead Belt the lead occurs as galena disseminated in dolomite. The concentration in the mills is by tabling and flotation. The grade of the concentrates and the recovery of the galena are excellent. However, in certain areas of some of the mines ore has been developed that does not concentrate so readily. Because of its reddish brown color this ore is known locally as "red ore", and the presence of oxidized lead has been suspected. The purpose of this investigation was to determine the extent to which oxidized lead minerals were …
Technical Methods Of Analysis For Mill Products, Daniel Elijah Huffman
Technical Methods Of Analysis For Mill Products, Daniel Elijah Huffman
Professional Degree Theses
"In mining and milling operations it is necessary that the assays be known as soon as possible, also that these results are more accurate than the sampling or the operation that produced the samples. This means that both speed and accuracy must be considered when selecting a method for the analysis of samples"--Technical Methods of Analysis, page 1.
Japan, Van Hoose Smith
Japan, Van Hoose Smith
Professional Degree Theses
"This ore is mined from a quartz vein which is refined by small seams of graphitic clay material, and the walls of the vein consist of a sort of graphitic shaley material. The above graphitic materials break down under treatment into a rather peculiar clay which was called primary colloidal slime. The milling process in use consists of stamp milling followed by the separation into sand and primary slime in Dorr Duplex Classifiers. The primary slime overflow from these classifiers, which is all practically thru 220 mesh, is thickened and treated by flotation. Normally and with a good supply of …