Reference

Stamping refractories

Stamping refractories. Kimura, Morihiro; Kyota, Hiroshi; Okuta, Shigeru (Shinagawa Fire Brick Co., Ltd., Japan). Japan. JP 51037082 B4 13 Oct 1976 Showa, 4 pp. (Japanese). (Japan). CODEN: JAXXAD. CLASS: IC: C04B035-66. APPLICATION: JP 72-31758 31 Mar 1972. DOCUMENT TYPE: Patent CA Section: 55 (Ferrous Metals and Alloys) Section cross-reference(s): 57 Al(H2PO4)3 (I) [13530-50-2] was added to a refractory mixt. of coarse Al2O3 material and(or) SiC 50-75, a fine grain mixt. contg. SiC, graphite and(or) carbonaceous matter 10-50, and ferrosilicon (II) [8049-17-0] and(or) carbonitrided Fe (III) 25-50% to obtain a stamping refractory material. Thus, 7% I was added to a mixt. of 1.3-2.8, 0.7-2.8, and .ltoreq.0.7 mm size SiC 46, 20, and 17%, resp., and . 7439-89-6 and 409-21-2 are also in the experiment.ltoreq.0.7 mm size II 6, III 6, pitch 3, and clay 2%, stamped, and heated at 1500.degree. to obtain a tap-hole refractory having d. 2.12 g/cm3, bending strength 200 kg/cm2, and slag infiltration depth (2 h at 1550.degree.) 2 mm vs. 60 mm for a conventional one. .

Self-hardening mold for ferrous metal casting

Self-hardening mold for ferrous metal casting. Takahashi, Soroku (Kyuroku Co., Ltd., Japan). Japan. Kokai JP 51140826 4 Dec 1976 Showa, 5 pp. (Japanese). (Japan). CODEN: JKXXAF.There are some reagents with their cas registry numbers 1317-61-9 and 7664-38-2 are used in this study. CLASS: IC: B22C001-18. APPLICATION: JP 75-64938 29 May 1975. DOCUMENT TYPE: Patent CA Section: 55 (Ferrous Metals and Alloys) A refractory material such as silica sand is mixed with Al(H2PO4)3 or its mixt. with H3PO4 and Fe3O4-based Fe oxide powder, and formed to obtain self-hardening casting molds. Thus, SiO2 sand 100, 2:8 (by vol.) 89% H3PO4-50% Al(H2PO4)3 [13530-50-2] soln. 5, and Fe3O4 powder 2 parts were mixed for 3 min, formed, and hardened to obtain a test piece having a strength .apprx.30 kg/cm2 after 2 h. Its residual strength was <5 kg/cm2 after heating at 800-1200.degree.. .