摘要:

AbstractThe application of the process of electrostatic spraying to the porcelain enamel industry is described. The equipment which is used and the method of using it are discussed in detail. Particular emphasis is placed on the preparation of enamel for electrostatic spraying and on theoretical considerations which have a direct bearing on the spraying process. The applicability and limitations on the use of the equipment in the porcelain enamel industry are considered.

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1945.tb14523.x

出版商:Blackwell Publishing Ltd    

年代:1945

数据来源: WILEY

摘要:

AbstractThe abradability of glass of different compositions was estimated by grinding on a steel plate with powdered quartz as an abrasive, determining the weight removed from the ends of glass'rods, reducing this to volume, and comparing with the volume removed from used silica rods by the same treatment. Silica (SiO2) and B2O2are constituents contributing to resistance to abrasion, while soda, lime, and especially lead oxide produce high abradability. Abradabilities are expressed in numbers referred to silica glass as unity.

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1945.tb14524.x

出版商:Blackwell Publishing Ltd    

年代:1945

数据来源: WILEY

摘要:

AbstractDiopside and wollastonite from natural sources were mixed with TiO2, ZrO2, and SiO2. The firing and fired properties were studied. Certain admixtures were found to improve the color of the fired materials and at the same time produced exceptionally hard bodies of high density.SummaryAll of the mixtures of wollastonite or diopside with TiO2, ZrO2, and SiO2showed the short firing range typical of the alkaline earth silicates.Exceptionally high hardness and density were obtained with many of the compositions.The color of wollastonite showed the greatest improvement with 15% of TiO2and that of diopside with 10 to 25% of ZrO2.

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1945.tb14525.x

出版商:Blackwell Publishing Ltd    

年代:1945

数据来源: WILEY

摘要:

AbstractNew York State diopside and wollastonite as well as a high tremolite material obtained as a by‐product of the electrostatic separation of talc were fired at a series of temperatures. Petrographic examination of the fired materials, absorptions, shrinkages, and P.C.E. values are reported, and observations on color and hardness are also given.SummaryDiopside and wollastonite resemble talc in having short firing ranges, but they develop a dark color at higher temperatures due to a brown, glassy phase that separates from solid solution at temperatures of 1200°C. and higher.The tremolite‐talc‐quartz mixture is highly refractory; its color at 1435°C. is still white and complete reaction of the constituents has taken place to produce cristobalite and a solid solution of diopside in enstatite. Low absorption was not obtained even with the complete reaction and no glassy phase was

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1945.tb14526.x

出版商:Blackwell Publishing Ltd    

年代:1945

数据来源: WILEY