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发明公开
CN110565030A 含稀土元素的低硅低铝马氏体不锈钢及其冶炼方法 无效 - 驳回

含稀土元素的低硅低铝马氏体不锈钢及其冶炼方法
摘要：
本发明属于钢材技术领域，具体涉及含稀土元素的低硅低铝马氏体不锈钢及其冶炼方法。本发明所要解决的技术问题是提供一种含稀土元素的低硅低铝马氏体不锈钢的冶炼方法，以所述含稀土元素的低硅低铝马氏体不锈钢的总质量为基准，Si≤0.10％、Al≤0.015％、C0.08％～0.15％、稀土0.010％～0.020％；冶炼方法包括以下步骤：电弧炉粗炼、LF炉精炼、VOD炉精炼、LF炉深度精炼、浇注、电渣重熔；其中，在LF炉深度精炼工序中，还原后加入稀土，静吹氩，再出钢。本发明方法能够改变低硅低铝马氏体不锈钢中非金属夹杂物的形态。
摘要（英）：

The invention belongs to the technical field of steel, and particularly relates to a low-silicon and low-aluminum martensitic stainless steel containing a rare earth element and a smelting method thereof. The technical problem to be solved by the invention is to provide a smelting method for a low-silicon and low-aluminum martensitic stainless steel containing a rare earth element. Based on the total mass of the low-silicon and low-aluminum martensitic stainless steel containing the rare earth element, the martensitic stainless steel comprises less than or equal to 0.10% of Si, less than or equal to 0.015% of Al, 0.08-0.15% of C and 0.010-0.020% of rare earth; the smelting method comprises the following steps of electric arc furnace refining, LF furnace refining, VOD furnace refining, LF furnace deep refining, pouring and electroslag remelting, wherein the rare earth is added in the LF furnace deep refining process after the reduction, and then steel is produced. The method provided bythe invention can change the morphology of non-metallic inclusions in low-silicon and low-aluminum martensitic stainless steel.

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