- Email: [email protected]
A constant torque abrasion machine with a permanent abrasive surface
Wear Tests on Concrete Using the German Standard Method of Test and Machine. .4merifujz .Socipfy for 3 ames 1,. Sawyer. Tcstiltg ,~~ate~~~~.~~ PveQrinf 1’11 7X, ,957~ LI pp. (TA401 Am35p Vis.) The Ebener testing machine duplicates a practical wear condition 1)~ rolling steel balls under pressure over the concrete surface. This results in the surface being subjected to abrasion caused mainly by rolling and sliding friction accompanied by some ~~~~~ln~~iilg or beating force. A Constant Torque Abrasion Machine With a Permanent Abrasive Surface.
7.1, Genwal Rolling as an Efficient Method for Raising the Wear Resistance of Pinions. (in Russian) A, A. Novik and &I. A. Halter. T’eshik Mash~nostyofn~~a., V. 37. no. IO, Oct. 1957, p. &j-65. As a result of the rolling process, residual strength develops on the metal surface. This strength added algebraically to the tensile strength produced in the working process of parts, decreases the cyclic amplitude, and thus increases the life of parts. A Study of the Deformed Layer Produced on Metal Surfaces by Mechanical Machining, Abrasion and Polishing Operations. L. E. Samuel% Electroplating and Metal Finishing, V. 10, Oct. 1957, p. 315 +- 4 pages. Machining, abrasion, and metallographic polishing operations ; production of deformation-free surfaces. The Nature of Mechanically Polished Metal Surfaces : TheSurfaceDeformationProduced During the Abrasion and Polishing of Zinc. L. E. Samuels and G. R. Wallwork. Institute of Metals, Journal, v. 86, Sept. 1957, p. 43-48. The deformed layer detected on abraded surfaces consists -of two parts: an outer recrystallized layer and a subsurface layer containing deformation twins and kink bands. The layer-produced during polishing is of an entirely different nature, consisting of isolated rays df twinned material associated with individual polishing scratches. 7.2.
Sieel
Resistance to Wear Upon Saturation of a Steel Surface With Carbide-Forming Elements. (in Russian) G. N. Uubinin. Metallovedenie i Obrabotka Mctallov, 1957, no. 9, Sept., p, ZI-2j.
High-Altitude Carbon Brush Problem. (in Polish) I
Wear resistance data are given for carbon steel surfaces containing (‘r, V, (‘I~, W, MO, or Mn. X-Ray Study of the Sulfurizing of Steel. 1II ?tf Vi nogradov and Y. I). Zelenova. f-frnuy B~&rh~v ~~a~.~~~tzo?tso. 4032, b pp. (I:rom Zaoodskaiu Labovutoriia, V. 23. no. 6, 19j7, 11.h97-G98.) Henry Rrutchrr, Altadena, (‘alif. C’om~arison ol S-rav spectra 01 surface lay&s of specimens ci O.I+jqr, plain C: steel sulfurized in nine different baths. Procedure for X-ray analysis and testing for frictional wear. ~onlposit~~~I1 of sulfurizing baths. Determination of the Heat Developed in a Part During Surface Grinding. 3 L’. Pod&i. N. N. Novikov, and V. I<. l.oginov. Startki i Insfvtmwnt, V. -8, WI. X, .\w ‘957% p. 33-34. ~~escriptios~ of a special calorimetric installation for determination of the temperature field in a part, with equipment for holding the specimens directly in the Iquid bath. Results of calorimetric tests. Effect of Grinding Conditions and Resultant Residual Stresses on the Fatigue Strength of Hardened Steel. I,. P. Tarasov, W. S. Hyler, and H. R. Letner. Anzerica~ Society for Testing Materials, Preprint No. 65, 1957. 18 pp. (TA.401 Am3jp Vis.) lcatigue limit was investigated as a function of the residual stresses generated in flat test bars by Iongitudinai surface grinding, the experimental variables being wheel hardness, grinding fluid, and unit down-feed. For good commercial conditions the Iimit was the same as that obtained under gentle grinding. Severe grinding caused a decrease of about 13‘$(,. Cyclic stressing did not reduce the magnitude of the residual stresses.
7.1, Genwal Rolling as an Efficient Method for Raising the Wear Resistance of Pinions. (in Russian) A, A. Novik and &I. A. Halter. T’eshik Mash~nostyofn~~a., V. 37. no. IO, Oct. 1957, p. &j-65. As a result of the rolling process, residual strength develops on the metal surface. This strength added algebraically to the tensile strength produced in the working process of parts, decreases the cyclic amplitude, and thus increases the life of parts. A Study of the Deformed Layer Produced on Metal Surfaces by Mechanical Machining, Abrasion and Polishing Operations. L. E. Samuel% Electroplating and Metal Finishing, V. 10, Oct. 1957, p. 315 +- 4 pages. Machining, abrasion, and metallographic polishing operations ; production of deformation-free surfaces. The Nature of Mechanically Polished Metal Surfaces : TheSurfaceDeformationProduced During the Abrasion and Polishing of Zinc. L. E. Samuels and G. R. Wallwork. Institute of Metals, Journal, v. 86, Sept. 1957, p. 43-48. The deformed layer detected on abraded surfaces consists -of two parts: an outer recrystallized layer and a subsurface layer containing deformation twins and kink bands. The layer-produced during polishing is of an entirely different nature, consisting of isolated rays df twinned material associated with individual polishing scratches. 7.2.
Sieel
Resistance to Wear Upon Saturation of a Steel Surface With Carbide-Forming Elements. (in Russian) G. N. Uubinin. Metallovedenie i Obrabotka Mctallov, 1957, no. 9, Sept., p, ZI-2j.
High-Altitude Carbon Brush Problem. (in Polish) I
Wear resistance data are given for carbon steel surfaces containing (‘r, V, (‘I~, W, MO, or Mn. X-Ray Study of the Sulfurizing of Steel. 1II ?tf Vi nogradov and Y. I). Zelenova. f-frnuy B~&rh~v ~~a~.~~~tzo?tso. 4032, b pp. (I:rom Zaoodskaiu Labovutoriia, V. 23. no. 6, 19j7, 11.h97-G98.) Henry Rrutchrr, Altadena, (‘alif. C’om~arison ol S-rav spectra 01 surface lay&s of specimens ci O.I+jqr, plain C: steel sulfurized in nine different baths. Procedure for X-ray analysis and testing for frictional wear. ~onlposit~~~I1 of sulfurizing baths. Determination of the Heat Developed in a Part During Surface Grinding. 3 L’. Pod&i. N. N. Novikov, and V. I<. l.oginov. Startki i Insfvtmwnt, V. -8, WI. X, .\w ‘957% p. 33-34. ~~escriptios~ of a special calorimetric installation for determination of the temperature field in a part, with equipment for holding the specimens directly in the Iquid bath. Results of calorimetric tests. Effect of Grinding Conditions and Resultant Residual Stresses on the Fatigue Strength of Hardened Steel. I,. P. Tarasov, W. S. Hyler, and H. R. Letner. Anzerica~ Society for Testing Materials, Preprint No. 65, 1957. 18 pp. (TA.401 Am3jp Vis.) lcatigue limit was investigated as a function of the residual stresses generated in flat test bars by Iongitudinai surface grinding, the experimental variables being wheel hardness, grinding fluid, and unit down-feed. For good commercial conditions the Iimit was the same as that obtained under gentle grinding. Severe grinding caused a decrease of about 13‘$(,. Cyclic stressing did not reduce the magnitude of the residual stresses.