摘要:

ABSTRACTEconomies of storage battery trucks which have been proved are cited. Comparison of cost of wheelbarrow and truck methods is given showing that trucks will pay for themselves the first year, have low cost upkeep, and will last for twelve or more years.

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1930.tb17061.x

出版商:Blackwell Publishing Ltd    

年代:1930

数据来源: WILEY

摘要:

ABSTRACTThe factors entering into the set‐up of a bonus system designed to increase production together with lower costs, decrease in labor turnover, and maintaining the quality up to standard are discusse

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1930.tb17062.x

出版商:Blackwell Publishing Ltd    

年代:1930

数据来源: WILEY

摘要:

ABSTRACTThe importance of the cleaning phase of the enameling process as related to production of uniformly good work is not always appreciated. Many troubles encountered commonly in porcelain enameling plants can be traced to the pickling department turning out unclean work. In order to control the cleaning properly there are a number of points which should he considered, such as type of lubricant used, production schedule, evidence of water hardness, and selection of proper type of cleaner.A method has been suggested which applies to the water‐break test for determining the exhaustion point of the cleaning tank. Rinsing, packing or racking, and electrolytic cleaning are also of importance and merit consideratio

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1930.tb17063.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.tb17064.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.tb17065.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.tb17066.x

出版商:Blackwell Publishing Ltd    

年代:1930

数据来源: WILEY

摘要:

ABSTRACTDevelopment in refractory linings for the various furnaces encountered in the nonferrous foundry industry is outlined, and figures given showing the present trend. These include open‐flame, crucible, and electric furnaces. The open‐flame furnaces formerly used firebrick linings, but silicon‐carbide and high alumina refractories are coming into use. The crucible furnace linings show a decided preference for silicon‐carbide refractories, while the electric furnaces are partial to the alumina and mullite bearing types.Progress in the manufacture of refractory cements and their use in the various types of furnaces is discussed. Data are given which indicate that the use of the proper types of cements for maintaining furnace linings of similar composition is becoming more

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1930.tb17067.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.tb17068.x

出版商:Blackwell Publishing Ltd    

年代:1930

数据来源: WILEY

摘要:

ABSTRACTMaking use of a hydraulic press which presses standard fire brick, eight commercial mixtures were investigated to determine the effect of varying the forming pressure. To obtain pressures higher than those used commercially it was necessary to reduce the moisture content. The bulk density of uifired brick is shown to have increased directly with the pressure, as did the transverse strength. These changes, however, are lessened at the higher pressures. By comparing the green bulk density of brick formed on commercial, mechanically actuated presses, with those pressed hydraulically at known pressures it is concluded that industrial forming presses are operated at comparatively low pressures. Fireclay bodies do not attain a state of maximum compressibility within the limits of the study but continue to contract with additional pressure.

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1930.tb17069.x

出版商:Blackwell Publishing Ltd    

年代:1930

数据来源: WILEY

摘要:

ABSTRACTBulging is a universal problem in the manufacture of large refractory shapes. It is discussed from the standpoint of molding, pressing, turning from the mold, drying, edging, firing, and air and gas pockets.

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1930.tb17070.x

出版商:Blackwell Publishing Ltd    

年代:1930

数据来源: WILEY