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Neuere ergebnisse der kautschuk-physik
LITERATURE AND CURRENT EVENTS
264 6.2.
Bearing Materials
Special Materials for Unusual Ball-Bearing Applications. William Bhnder. General Motors Engineering Journal, V. 4, Jan.-Mar. ‘957, p. 42-46, Material evaluation methods; high-temperature, non-magnetic, and corrosion-resistant applications; principal properties of ballbearing and separator materials. Aluminum-Tin Bearings. High Tin Types Reduce Wear. E. C. Ellwood. Materials & Methods, V. 45, June 1957, p. i 10.113. W’ith as-cast brittleness eliminated by heat treatment, A1 bearings containing 25 to 5o’jo Sn offer low wear and good fatigue resistance. They are particularly useful for heavy loads on unhardened steel shafts. Frictional Characteristics and Surface Damage of Thirty-Nine Different Elemental Metals in Sliding Contact With Iron. C. L. Goodzeit, R. P. Hunnicntt, and A. E. Roach. ASME, Transactions, V. 78, Nov. r956,p. 1669-1676. Surface-damage characteristics are related to the relative hardness of the metals in sliding contact, their mutual solubility, and their ability to form intermetallic compounds. Wear Properties of 60 : 40 Brass Containing Lead. Fnsao Hayama. Castings Research Laboratory, Report, Waseda Univwsity, 19.56, no. 7, p. 81-82. Variation of wear rate with speed, pressure, and lead content. Development of Friction-Seal Materials for High Temperature-High Speed Operation. Peter F. Mataich. Wright Air Development Center Materials Laboratory, WA DC TechGcal Report 56-579, Feb. 1957, 18 p. (TL 507 Un3.rSw Vis.) The 30 Ni- and Co-base alloys evaluated showed excessive wear which was attributed to the excessive temperatures reached at the mating surfaces when the lubricating oil film broke down. This condition could be remedied by Incorporating a suitable sohd lubricant in the seal material itself. Aluminum-Lead Bronze Bearing Metal. (in Russian) E. F. Merkulov. Tsvetnye Metally, V. 30, June 1957, p. 67-69. Replacement of high-lead bronzes with one use in containing 7-1 I e,, Sn. Successful tractor engines. Scoring Characteristics of Thirty-Eight Different Elemental Metals in High-Speed Sliding Contact With Steel. A. E. Roach, C. L. Goodzeit, and Ii. P.
VOL. 1
Hunnicutt. ASME, 1956, p. 1659.1667.
Tvansactiom,
(1957/j@ V. 7X, Nov.
A New Oil-Less Bearing Material. John B. Shaw and Walter V. Knopp. Product Engineering. V. 28, Jan. 1957. p. 203-205. Characteristics and propertres, advantages and limitations of full density graphite-metal powder combinations, self-lubricating even at extreme temperatures and pressures. 6.3. Organic Materials Neue Erkenntnisse iiber Gleiteigenschaften van Polyamiden. I. Sew Ideas on the Frictional Properties of Polyamides. H. R. Jacobi. Kuwtstoffe, V. 47, May ‘957, p. 134-239. With the Almen-Wieland apparatus, cnrves are obtained which help to assess the effect of adding graphite and MoS, under various working conditions and with different combinations of the two materials. Increased knowledge of the morphological relationship led to the preparation of polyamides having a regular structure and extremely fine grain. Stability of Nylon Parts in Business Machines. Byron W. Nelson. SPE Journal, V. 13, Feb. ‘9.57, p. 13-16,64. \Vear of nylon in contact with other materials; surface finish requirements for mating steel parts in moving contact with nylon; effect of relative humidity on dimensions of nylon parts. Einfluss des Weichmacheranteils bei PVCFordergurten. The Effect of Plasticizers on PVC Conveyor Belts. Berm1 Passmann. Kautschuk und Gummi, v. 10, June 1957. p. 135-136. Inflammability, flexibility, resistance to abrasion, maximum load, and electrical resistance of belt with varying plasticizer contents, with and without antistatic agents. Neuere Ergebnisse der Kautschuk-Physik. Recent Developments in the Physics of Rubber. .-\. Schallamach. Kautschuk und Gummi, v. IO, June 1957, p. WTr35-WTr4o. Elasticity, resistance to tearing and to abrasion of various filled and unfilled natural rubber vulcanizates. 6.4. Inorganic
hfaterials
Sintered Metal Oxides-New Tool Material. (in Czech.) Witold Biernawski. Strojirenskd Vjroba, v. 5, June 1957, p. 42-245. Manufacturing technique and tests of sintcred metal oxide. Use of ultraviolet rays in
264 6.2.
Bearing Materials
Special Materials for Unusual Ball-Bearing Applications. William Bhnder. General Motors Engineering Journal, V. 4, Jan.-Mar. ‘957, p. 42-46, Material evaluation methods; high-temperature, non-magnetic, and corrosion-resistant applications; principal properties of ballbearing and separator materials. Aluminum-Tin Bearings. High Tin Types Reduce Wear. E. C. Ellwood. Materials & Methods, V. 45, June 1957, p. i 10.113. W’ith as-cast brittleness eliminated by heat treatment, A1 bearings containing 25 to 5o’jo Sn offer low wear and good fatigue resistance. They are particularly useful for heavy loads on unhardened steel shafts. Frictional Characteristics and Surface Damage of Thirty-Nine Different Elemental Metals in Sliding Contact With Iron. C. L. Goodzeit, R. P. Hunnicntt, and A. E. Roach. ASME, Transactions, V. 78, Nov. r956,p. 1669-1676. Surface-damage characteristics are related to the relative hardness of the metals in sliding contact, their mutual solubility, and their ability to form intermetallic compounds. Wear Properties of 60 : 40 Brass Containing Lead. Fnsao Hayama. Castings Research Laboratory, Report, Waseda Univwsity, 19.56, no. 7, p. 81-82. Variation of wear rate with speed, pressure, and lead content. Development of Friction-Seal Materials for High Temperature-High Speed Operation. Peter F. Mataich. Wright Air Development Center Materials Laboratory, WA DC TechGcal Report 56-579, Feb. 1957, 18 p. (TL 507 Un3.rSw Vis.) The 30 Ni- and Co-base alloys evaluated showed excessive wear which was attributed to the excessive temperatures reached at the mating surfaces when the lubricating oil film broke down. This condition could be remedied by Incorporating a suitable sohd lubricant in the seal material itself. Aluminum-Lead Bronze Bearing Metal. (in Russian) E. F. Merkulov. Tsvetnye Metally, V. 30, June 1957, p. 67-69. Replacement of high-lead bronzes with one use in containing 7-1 I e,, Sn. Successful tractor engines. Scoring Characteristics of Thirty-Eight Different Elemental Metals in High-Speed Sliding Contact With Steel. A. E. Roach, C. L. Goodzeit, and Ii. P.
VOL. 1
Hunnicutt. ASME, 1956, p. 1659.1667.
Tvansactiom,
(1957/j@ V. 7X, Nov.
A New Oil-Less Bearing Material. John B. Shaw and Walter V. Knopp. Product Engineering. V. 28, Jan. 1957. p. 203-205. Characteristics and propertres, advantages and limitations of full density graphite-metal powder combinations, self-lubricating even at extreme temperatures and pressures. 6.3. Organic Materials Neue Erkenntnisse iiber Gleiteigenschaften van Polyamiden. I. Sew Ideas on the Frictional Properties of Polyamides. H. R. Jacobi. Kuwtstoffe, V. 47, May ‘957, p. 134-239. With the Almen-Wieland apparatus, cnrves are obtained which help to assess the effect of adding graphite and MoS, under various working conditions and with different combinations of the two materials. Increased knowledge of the morphological relationship led to the preparation of polyamides having a regular structure and extremely fine grain. Stability of Nylon Parts in Business Machines. Byron W. Nelson. SPE Journal, V. 13, Feb. ‘9.57, p. 13-16,64. \Vear of nylon in contact with other materials; surface finish requirements for mating steel parts in moving contact with nylon; effect of relative humidity on dimensions of nylon parts. Einfluss des Weichmacheranteils bei PVCFordergurten. The Effect of Plasticizers on PVC Conveyor Belts. Berm1 Passmann. Kautschuk und Gummi, v. 10, June 1957. p. 135-136. Inflammability, flexibility, resistance to abrasion, maximum load, and electrical resistance of belt with varying plasticizer contents, with and without antistatic agents. Neuere Ergebnisse der Kautschuk-Physik. Recent Developments in the Physics of Rubber. .-\. Schallamach. Kautschuk und Gummi, v. IO, June 1957, p. WTr35-WTr4o. Elasticity, resistance to tearing and to abrasion of various filled and unfilled natural rubber vulcanizates. 6.4. Inorganic
hfaterials
Sintered Metal Oxides-New Tool Material. (in Czech.) Witold Biernawski. Strojirenskd Vjroba, v. 5, June 1957, p. 42-245. Manufacturing technique and tests of sintcred metal oxide. Use of ultraviolet rays in