ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1930.tb16294.x

出版商:Blackwell Publishing Ltd    

年代:1930

数据来源: WILEY

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1930.tb16295.x

出版商:Blackwell Publishing Ltd    

年代:1930

数据来源: WILEY

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1930.tb16296.x

出版商:Blackwell Publishing Ltd    

年代:1930

数据来源: WILEY

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1930.tb16297.x

出版商:Blackwell Publishing Ltd    

年代:1930

数据来源: WILEY

摘要:

ABSTRACTA report of progress in the development of a method of testing refractories for their resistance to abrasion at high temperatures. The method developed consists of a steel chisel point moving back and forth over faces of the brick clamped together. Eleven brick are tested at one time. The chisel is actuated by means of a jack hammer and is water‐cooled. The blow delivered vanes from 6.5 inch‐pounds at the beginning of the test to 13 inch‐pounds under the most severe conditions. The chisel has a rounded point l/8‐ch radius and 1 inch wide. Data show that the principle is correct and capable of differentiating between brick of varying resistances to abrasion at tempcratures as high as

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1930.tb16298.x

出版商:Blackwell Publishing Ltd    

年代:1930

数据来源: WILEY

摘要:

ABSTRACTThermal expansion from 20 to 950°C and physical data of silica brick from various producing districts in the United States and Europe are presented. The variations in thermal expansion of brick from various parts of kilns are given for plants in the United States.The magnitude of variation of the thermal expansion of silica brick is quite small, the expansion ranging between 1.15% and 1.30% at the highest point of expansion. The expansion of the silica mortars varied between 1.30 to 1.52% depending upon variations in clay, quartzite, and bats.The variations in thermal expansion of silica mortars from various producing plants are also shown. Data on the effect of size of grain, clay content, and P.C.E. on the thermal expansion of mortars are given. An extensive bibliography on thermal expansion of silica brick appears with the paper

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1930.tb16299.x

出版商:Blackwell Publishing Ltd    

年代:1930

数据来源: WILEY

摘要:

ABSTRACTA select sample of Missouri semiflint clay was slaked to its natural size of grain and screened into the following sizes: on 20, 20 to 40, 40 to 60, 60 to 100, and through 100‐mesh.The 100‐mesh fraction is a very dense firing clay, giving a high dry and fired modulus of rupture, and would be effective as a “dope” for a weak clay. The properties of the intermediate finenesses are substantially an average of the properties of all the finenesses. Points of inferiority in the coarse fractions are supplemented by points of superiority in the fine fractions, and vice versa. All fractions are therefore desirable, and further, there are indications that no substantial improvement could be made by screening out any one of the fr

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1930.tb16300.x

出版商:Blackwell Publishing Ltd    

年代:1930

数据来源: WILEY

摘要:

ABSTRACTA sedimentation for determining subsieve particle distribution is described. The Curves obtained apparatus is simple and efficient enough to be used in shop practice. on feldspars and flints as well as other ceramic materials are shown.

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1930.tb16301.x

出版商:Blackwell Publishing Ltd    

年代:1930

数据来源: WILEY

摘要:

ABSTRACTA heavy, white, fuzzy coating on brick developed in the firing. The coating consisted entirely of silica, produced from the reduction of silica and vaporized as silicon and reoxidized.

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1930.tb16302.x

出版商:Blackwell Publishing Ltd    

年代:1930

数据来源: WILEY

摘要:

ABSTRACTA brief review of the causes of scumming and glaze peeling is given. The usual use of barium carbonate for the prevention of these defects is also outlined.The reactivity test for barium carbonate and a suggested chemical analysis for soluble sulphates are described.Reactivity values of various barium carbonates are reported, followed by a discussion of the practical value of the reactivity test. A specification for barium carbonate is recommended.

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1930.tb16303.x

出版商:Blackwell Publishing Ltd    

年代:1930

数据来源: WILEY