Cooperative study of lithographic papers

• Publisher: Elsevier Science
• Year: 1931
• Tongue: English
• Weight: 137 KB
• Volume: 211
• Category: Article
• ISSN: 0016-0032
• DOI: 10.1016/s0016-0032(31)91035-1

✦ Synopsis

Tested in accordance with the requirements of the Federal Specifications.

2. Tested in accordance with the requirements of the Federal Specifications except the preliminary refiring at 1400' C. for five hours was omitted.

3. Tested according to the method prescribed by the American Society for Testing Materials.

4. Similar to method (3) except that pieces of the bricks which had become loosened from repeated heating and quenching were removed with the fingers instead of continuing the test until the loose pieces dropped off.

5. In this case one end of the bricks received a preliminary heat treatment at 1400' C. for five hours. They were then quenched from 850" C. in 2 inches of running water until the end reheated at 1400' C. had completely spalled off.