Finishing methods for aluminium

268

LITERKICRE

AND

HOW Much Do Grinding Fluids Affect Wheel Performance? I. J. A. Mueller, Irorz Age, V. ~70. Feb. 28, 1957,

p. 79-81. Tests with gases, water-soluble oils, and straight oils. Amount of metal removed, wheel wear, power consumed, workpiece finish, and cutting rate were measured. Cost-Cutting With Grinding Wheels. I. Snagging Wheet Speed Control. John. A. Mueller. Modern Casiings, v. 31, Feb. 19.57. p. 62-64. Control of surface speed is first step in planning snagging operations that will remove metal, faster, at lower cost. Cost Cutting With Grinding Wheels. II. Work Pressure and Wheel Selection. John A. Mueller. .Wodern Castings, 31. Mar. _ v. _ i957, P. 34-35.

Work pressure has drastic effect on wheel life anti cutting rates, paricularly with softer WhCels. Cutting and Grinding Ceramics. K. F. Rea and J. W. Ripple. A merica~ Ceramzc Society Bullets, v. 36, May 19~7, p. 1G3-167. \Vith modern grinding facilities and techniques, finish tolerances of &o.ooor or better may be obtained. Grinding also provides improved surface finishes, the quality of which depends on the abrasive used, the body being ground, and grinding practices. Inorganic Grinding Fluids for Titanium Afloys. M (1.Shaw and C T. Yang. ‘4 **erican Society of A4echmical Engineers, Paper No. ss-S43% 1955, 14 pp. FJI Xmxp Contin. Dilute inorganic aqueous solutions are effective grinding fluids for Ti alloys due to the formation of adsorbed layers on both the grinding wheel and freshly ground Ti surfaces. Barium was most effective for A&O, surfaces, and the phosphate radical for Ti surfaces. UltrasonicImpact Grinding ProducesPrecise Shaped Holes, Slots on Servo-Valves With Ease. .-2. E. Shumate WestemM&als, v. 15, Feb. 1957, P- 41-43. Cutting or shaping hard or brittle materials. Tool vibrates zs,ooo c.p.s. 7.4. Finishing Finishing Methods for Aluminium. Pyodtict Filzishing, V. IO, Mar. 19.57, p. 82-99. Cleaning methods; mechanical finishes; chemical, anodizing, and electropolishing treatments; coloring anodic coatings.

CURRENT

EVEKISS

VOL.

1 (1957/55)

Lapping for Precision Ceramics. Steve Boetcher. Ceranzic .+gc, v. 68, i\;ov. 19.56, p. 26-29. F&apping is an economical method of remouing substantial amounts of material xvith toierances as low as + 0.000 t MetaIPoIishing WithSet-Up Wheels. H. S. Burt. iWetaE ~j~t~sh~~zg,V. 55, Feb. 1957, p. 52-55. ‘Types of adhesives and abrasives; preparation of wheel for set up; paste heading, dr+g, and breaking up of wheel surface. Som~Aspectsint~eProductionandM~asnr~ment: of Surface Finish. M. A. Chappie. Atisfvalasian l?nfineru, v. .+
Verfahren Finishing

PRXKSS.

Helmut K6nig. Zeitsckrijt fGy ,~~etallk~~de, V. 48, June 1957, p. 366-370. The practical application of a smooth rolling technique with reference to deformation processes in the surface. Changes in surface and surface hardness, internal shesses, roughness limit applicability. Quality of GroundSurfaces. (in Czech.) J Riilka. Strojivenstvi, v. 6, Dec. 19.56, p. 823~830. The finisb of machine parts as a factor in determining their proper function. Surfaces