Platers' Guide Volume 10; With Which Is Combined Brass World (Paperback)

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1914 Excerpt: ...the other for the analysis of base metal and as a check on the analysis of the first set. Rapid and accurate methods of analysis were offered. The removal of coatings with hot sulphuric acid is a rapid test for weight of coatings as well as a convenient means for analysis of base metal. The determination of tin was suggested in triplicate. An important paper was that offered by William Reuben Webster, "Considerations Affecting Specifications for Wrought XonFerrous Materials." Some of the main factors which affect the construction of specifications for wrought non-ferrous materials were enumerated and discussed, attention being particularly confined to the copper-zinc alloys as representing the most comprehensive group of materials that are fabricated by wrought processes into sheets and strips, rods and bars, brazed and seamless tubes, and wire. The writer dealt with the properties of copper-zinc alloys, their variations in composition, the influence of the casting process, the operations employed in making sheet and strip, temper, the classification of kinds and qualities, the manufacture of rods and bars, wire, seamless tubes, the relation of qualities to uses and the control of quality. L. P. Webbert presented a paper on the "Study of the Strength of Non-Ferrous Castings: Comparison of Different Test Specimens." Two types of test specimens used on non-ferrous castings were dealt with: one type used on castings made of copper-tin alloys and the other type on castings made of copper-zinc alloys. A brief description of the manufacture of the alloys used in engineerr.'.g practice was given. After comparing various test results, the writer concluded that the test specimen used for copper-zinc castings represents very closely the strength o...