High temperature-resistant high strength stainless steel plate for hearth plate and production method
A technology of stainless steel plate and production method, which is applied in the field of special steel, can solve the problems of not being able to fundamentally guarantee the high-level mechanical properties of the heat-resistant stainless steel furnace bottom plate, increasing the direct cost and time cost of production, and the difficulty of large-scale promotion. , to achieve the effect of reducing the tendency of crack formation, improving creep resistance and durability, and reducing the content of harmful inclusions
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[0031] Example 1
[0032] A stainless steel plate for high-temperature and high-strength furnace bottom plate. The production process includes: smelting by using a combined blowing method of electric furnace + oxygen lance oxygen blowing, adding lime, fluorite and dephosphorization agent to perform deep P removal, and the tapping temperature is at 1655°C. Afterwards, the LF furnace is used for refining, various alloys are added in the LF furnace, alloy adjustment is carried out, lime and fluorite are added, and S is deep removed; Al powder is added for deoxidation; the whole process of the LF furnace is nitrogen increased by bottom blowing nitrogen. In the VD station, a high vacuum of 670Pa is used for 20 minutes. After the vacuum is broken, FeTi and carbonized rice husks are added and soft blown for 10 minutes (Ar:N controlled at 2:1), and then die-casting. After the steel ingot is demoulded and slowly cooled, it is annealed, the cap and the bottom of the ingot are sawn off, th...
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[0033] Example 2
[0034] A stainless steel plate for high-temperature and high-strength furnace bottom plate. The production process includes: smelting by using a combined blowing method of electric furnace + oxygen lance oxygen blowing, adding lime, fluorite and dephosphorization agent to perform deep P removal, and the tapping temperature is at 1671°C. Afterwards, the LF furnace is used for refining, various alloys are added in the LF furnace, alloy adjustment is carried out, lime and fluorite are added, and S is deep removed; Al powder is added for deoxidation; the whole process of the LF furnace is nitrogen increased by bottom blowing nitrogen. In the VD station, a high vacuum of 1330Pa is used for 20 minutes. After the vacuum is broken, FeTi and carbonized rice husks are added and soft blown for 10 minutes (Ar:N controlled at 2:1), and then die-casting. After the steel ingot is demoulded and slowly cooled, it is annealed, the cap and the bottom of the ingot are sawn off, t...
Example Embodiment
[0035] Example 3
[0036] A stainless steel plate for high-temperature and high-strength furnace bottom plate. The production process includes: smelting by using a combined blowing method of electric furnace + oxygen lance oxygen blowing, adding lime, fluorite and dephosphorization agent to perform deep P removal, and the tapping temperature is at 1681°C. Afterwards, the LF furnace is used for refining, various alloys are added in the LF furnace, alloy adjustment is carried out, lime and fluorite are added, and S is deep removed; Al powder is added for deoxidation; the whole process of the LF furnace is nitrogen increased by bottom blowing nitrogen. In the VD station, a high vacuum of 3350Pa is used for 20 minutes. After the vacuum is broken, FeTi and carbonized rice husks are added and soft blown for 10 minutes (Ar:N controlled at 1:1), and then die-casting. After the steel ingot is demoulded and slowly cooled, it is annealed, the cap and the bottom of the ingot are sawn off, t...
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