Heat-resisting alloy for rolls for glass forming
AssigneeKubota Corporation
InventorsYoshiaki Yamakami, Arata Yoshimitsu
Life of this patent
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Abstract
A heat-resisting alloy used for rolls such as glass forming roll, continuous casting roll specifically rolls to be used under severe condition where heating and cooling are repeated containing following components in the following proportions in terms of % by weight: ______________________________________ C 0.01-0.20 Si 0.10-1.5 Mn 0.10-2.0 Ni 0.10-6.0 Cr 14.0-18.0 ______________________________________ as basic components and with at least one of following components contained ______________________________________ Mo 0.1-2.0 Nb 0.05-0.5 V 0.10-0.5 Co 0.10-5.0 ______________________________________ and in the case containing Co, Ni+Co.ltoreq.7.0 the balance being substantially Fe and unavoidable impurities.
Claims4
In a process of continuous casting or glass forming operation wherein a material at a high temperature is contacted with the surface of a roller, the surface of the roller being subjected to repetition of heating and cooling and made of a heat-resisting alloy, the improvement wherein the heat-resisting alloy has high resistance to heat cracking under repeated heating and cooling conditions and consists essentially of the following components in the following proportions in terms of % by weight,
- ______________________________________ C 0.01-0.20 Si 0.10-1.5 Mn 0.10-2.0 Ni 0.10-6.0 Cr 14.0-18.0 ______________________________________
- the balance being substantially Fe and unavoidable impurities.
In a process of continuous casting or glass forming operation wherein a material at a high temperature is contacted with the surface of a roller, the surface of the roller being subjected to repetition of heating and cooling and made of a heat-resisting alloy, the improvement wherein the heat-resisting alloy has high resistance to heat cracking under repeated heating and cooling conditions and consists essentially of the following components in the following proportions in terms of % by weight,
- ______________________________________ C 0.01-0.20 Si 0.10-1.5 Mn 0.10-2.0 Ni 0.10-6.0 Cr 14.0-18.0 ______________________________________
- and also contains one or more elements selected from the group consisting of
- ______________________________________ Mo 0.1-2.0 Nb 0.05-0.5 V 0.10-0.5 Co 0.10-5.0 ______________________________________
- and in the case containing Co,
- Ni+Co.ltoreq.7.0
- and
- the balance being substantially Fe and unavoidable impurities.
Dependencies are inferred from the claim text.