Download or read book The Brass World and Platers' Guide, 1910, Vol. 6 written by Erwin S. Sperry and published by Forgotten Books. This book was released on 2016-09-30 with total page 470 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from The Brass World and Platers' Guide, 1910, Vol. 6: A Monthly Journal Although chromium is one of the common elements and now extensively used in steel al loys, it has not been used to any extent in copper alloys and then only in an experimental way. 3 C. Peck and W. R. Hodgkinson of London, England have recently patented a method of adding chromium to brass (u. 5. Patent Dec. 14, They have patented only the method of introducing the chromium and not the alloy produced. The method is as follows: Chromium phosphate is heated with charcoal and copper and a chromium phosphide produced. This is used for adding to brass for the introduction of the chromium. The heat need not be high to bring about this reaction. Firass may be used instead of copper as the following experiment carried out by the inventors indicates: 2600 grams of brass containing 70% of copper and 30% of zinc were melted in a crucible with 200 grams of a mixture of equal parts of ebro mium phosphate and powdered charcoal added. The whole was heated to 1000 C. For some time and 200 grams of the chromium phos phate mixture again added. This was repeat ed after several hours, and after four hours had elapsed, the mass was poured into a mold. The metal contained chromium phosphide which was used to add to brass to improve it. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works."