Melted alumina-zirconia ceramic grains, abrasive tools and...

Details Melted alumina-zirconia ceramic grains, abrasive tools and... Melted alumina-zirconia ceramic grains, abrasive tools and...

2006-03-14

2006-03-14

Marcheschi, Michael (Department: 1755)

Abrasive tool making process, material, or composition

With inorganic material

C051S308000, C051S309000, C264S005000, C264S319000, C264S332000, C264S430000, C264S460000, C264S405000

Reexamination Certificate

active

07011689

ABSTRACT:
A process for producing fused alumina-zirconia grits includes mixing raw materials suitable to produce grits with the following chemical composition, in % by weight: ZrO2+HfO2: 10–60%, Al2O3: 38–90%, SiO2: <0.8%, and Impurities: <1.2%. The process also includes adding carbon and aluminum metal to the mixture of raw materials to obtain a charged batch containing, in % by weight,: Carbon: 0.4–1% Aluminum metal: 0.5–2.5%. The process further includes melting the charged batch in an electric arc furnace with a voltage of 175–205 V and a delivered specific electrical energy of 2.5 to 4 kWh per kg of charge.

REFERENCES:
patent: 3181939 (1965-05-01), Marshall et al.
patent: 3607162 (1971-09-01), Bockstiegel et al.
patent: 3881282 (1975-05-01), Watson
patent: 3891408 (1975-06-01), Rowse et al.
patent: 3893826 (1975-07-01), Quinan et al.
patent: 4035162 (1977-07-01), Brothers et al.
patent: 4126429 (1978-11-01), Watson
patent: 4457767 (1984-07-01), Poon et al.
patent: 4595663 (1986-06-01), Krohn et al.
patent: 5403794 (1995-04-01), Morris et al.
patent: 2 246 705 (1974-03-01), None
patent: 480678 (1992-04-01), None
patent: 2 090 275 (1982-07-01), None

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