WO2023000707A1 - Vanadium-controlled cr13 type hydroelectric stainless steel smelting method - Google Patents

Vanadium-controlled cr13 type hydroelectric stainless steel smelting method Download PDF

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WO2023000707A1
WO2023000707A1 PCT/CN2022/083689 CN2022083689W WO2023000707A1 WO 2023000707 A1 WO2023000707 A1 WO 2023000707A1 CN 2022083689 W CN2022083689 W CN 2022083689W WO 2023000707 A1 WO2023000707 A1 WO 2023000707A1
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stainless steel
vanadium
controlled
refining
slag
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PCT/CN2022/083689
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French (fr)
Chinese (zh)
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邓琴
杨先芝
谢云飞
李福浩
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二重（德阳）重型装备有限公司
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/04—Making ferrous alloys by melting
    • C22C33/06—Making ferrous alloys by melting using master alloys
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/52—Manufacture of steel in electric furnaces
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/04—Removing impurities by adding a treating agent
    • C21C7/068—Decarburising
    • C21C7/0685—Decarburising of stainless steel
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/10—Handling in a vacuum
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Definitions

  • the invention relates to a method for smelting vanadium-controlled Cr13 type hydroelectric stainless steel, which belongs to the technical field of metallurgy.
  • the production process is generally electric furnace rough smelting ⁇ ladle furnace slag refining, composition adjustment ⁇ ladle furnace VOD refining ⁇ ladle furnace fine-tuning composition ⁇ pouring.
  • electric furnaces In the smelting process, electric furnaces generally use oxidation method and return method to smelt crude water: (1) oxidation method to smelt crude water (smelting process: raw material preparation ⁇ electric furnace oxidation method to smelt crude water ⁇ LF (slag) ⁇ power transmission and temperature rise ⁇ Adjust the composition and temperature of Cr, Ni, Mo, etc. ⁇ Invert the bag ⁇ LF (VOD, high vacuum) ⁇ Power transmission and temperature rise ⁇ Adjust the composition and temperature of C, Si, Mn, Cr, Ni, Mo, etc. ⁇ Sampling ⁇ Qualified composition and temperature Finally, final deoxidation and tapping ⁇ pouring castings), it is required to add iron and steel material with clear composition.
  • the advantage of this method of production is that the crude water V provided by the electric furnace is below ⁇ 0.01wt%, which creates favorable conditions for adding ferroalloy to the ladle furnace. It is not easy to cause V to exceed the standard.
  • the disadvantage is that the cost of the steel material is high. Due to the strong oxidation of the electric furnace, the Cr element in the steel material is basically oxidized and cannot be recycled. The amount of ferrochrome added to the ladle furnace is large, V is easy to exceed the standard and the production cost is high.
  • the advantage of this kind of production method is that the crude water provided by the electric furnace basically guarantees that V is less than or equal to 0.05wt%, the recovery rate of Cr element is high, and the production cost is reduced. Disadvantages: Production by this method has strict restrictions on returned materials and limited inventory. At the same time, the phenomenon of V exceeding the standard will still occur. It is necessary to reorganize the molten steel for dilution.
  • V content in ferrochrome should be controlled at 0.15-0.20wt%, and the V content brought into ferrochrome by oxidation method should be between 0.022-0.041wt%.
  • the content of V is basically 0.03-0.05wt%, considering the segregation of V, the local V of the workpiece will be higher than 0.05wt%. The return method doesn't work at all.
  • the technical problem to be solved by the present invention is to provide a new vanadium-controlled Cr13 type hydroelectric stainless steel smelting method.
  • the vanadium-controlled Cr13 type hydroelectric stainless steel smelting method of the present invention comprises:
  • the crude water or molten steel is subjected to vacuum blowing oxygen decarburization operation, blowing C to below 0.02wt%, blowing V to below 0.05wt%, after the VOD operation is completed , to carry out the slag removal operation.
  • the above-mentioned operation can be carried out once for general crude water or molten steel.
  • V content in crude water or molten steel is too high, it is possible that the V content will be greater than 0.05wt% after the above-mentioned operation is carried out once, and the vacuum oxygen blowing decarburization operation is repeated, and C is blown to below 0.02wt%, and V is blown to 0.05wt% or less, after the VOD operation is completed, the slag removal operation can be carried out until the V content is less than 0.05wt%.
  • the adopted process flow is: rough smelting in electric furnace ⁇ VOD refining in ladle furnace ⁇ slag removal, removal of oxide slag ⁇ re-slag refining in ladle furnace, adjustment ingredients ⁇ pouring;
  • the adopted technological process is: electric furnace rough smelting ⁇ ladle furnace slag refining ⁇ ladle furnace VOD refining ⁇ slag removal, removal of oxide slag ⁇ ladle furnace re-slag refining, adjusting composition ⁇ pouring;
  • the ladle furnace VOD refining is a vacuum blowing oxygen decarburization operation.
  • the present invention may not limit the V content in the steel raw material. Therefore, it is possible to recycle the returned materials and steel shavings of hydropower stainless steel. Therefore, in a specific implementation manner, the smelted iron and steel material is selected from at least one of hydropower stainless steel return material and steel shavings.
  • the electric furnace rough refining adopts an oxidation method or a return method.
  • the rough refining in the electric furnace adopts the return method without oxygen blowing.
  • the ladle furnace VOD refining includes: LF, VOD + the first high vacuum ⁇ adding slag material, deoxidizer, adjusting chemical composition ⁇ LF, the second high vacuum for carbon deoxidation, that is, VCD.
  • the method for adjusting the chemical composition of the present invention can be an existing conventional method, such as adding lime, ferrosilicon, aluminum block, ferrochrome/ferromanganese and other ferroalloys.
  • the vacuum degrees of the first high vacuum and the second high vacuum are both ⁇ 133Pa.
  • the vanadium-controlled Cr13 type hydroelectric stainless steel is a steel grade with C ⁇ 0.06wt%, Cr ⁇ 14wt%, and V ⁇ 0.05wt%.
  • the vanadium-controlled Cr13 type hydroelectric stainless steel is: ZG04Cr13Ni4Mo, ZG04Cr13Ni5Mo, ZG06Cr13Ni4Mo, ZG06Cr13Ni5Mo, CA-6NM, ZG06Cr13Ni5Mo or ZG0Cr13Ni4Mo.
  • the molten steel whose chemical composition has been adjusted can be poured into the magnesium-chromium ladle for VOD operation to remove vanadium, carbon, and chromium, and then carry out slag removal operation to remove oxide slag, and finally reduce V to the standard within range.
  • the method of the present invention removes vanadium, carbon, and chromium.
  • the new return method smelting method after the crude water provided by the electric furnace passes through VOD, the contents of Cr, Ni and Mo in the molten steel are basically close to the standard tapping requirements, therefore, only a small amount of low-vanadium-chromium ferrochrome is required for smelting in the ladle furnace And other alloys to adjust the C, Cr content, can save a lot of precious alloy usage.
  • the vanadium-controlled Cr13 type hydroelectric stainless steel smelting method of the present invention comprises:
  • the crude water or molten steel is subjected to vacuum blowing oxygen decarburization operation, blowing C to below 0.05wt%, blowing V to below 0.05wt%, after the VOD operation , to carry out the slag removal operation.
  • the adopted process flow is: rough smelting in electric furnace ⁇ VOD refining in ladle furnace ⁇ slag removal, removal of oxide slag ⁇ re-slag refining in ladle furnace, adjustment ingredients ⁇ pouring;
  • the adopted technological process is: electric furnace rough smelting ⁇ ladle furnace slag refining ⁇ ladle furnace VOD refining ⁇ slag removal, removal of oxide slag ⁇ ladle furnace re-slag refining, adjusting composition ⁇ pouring;
  • the ladle furnace VOD refining is a vacuum blowing oxygen decarburization operation.
  • Raw material preparation ⁇ electric furnace without oxygen blowing return method to smelt crude water ⁇ LF (VOD, HV) ⁇ slag removal ⁇ LF (slag) ⁇ slagging, power transmission and temperature rise ⁇ adjust the composition and temperature of Cr, Ni, Mo, etc. ⁇ sampling ⁇ composition, After the temperature is qualified, the final deoxidation tapping ⁇ pouring.
  • Raw material preparation electric furnace oxidation method or non-oxygen blowing return method to smelt crude water ⁇ LF (slag) ⁇ power transmission and temperature rise ⁇ adjustment of Cr, Ni, Mo and other components and temperature ⁇ returning ⁇ LF(VOD, high vacuum) ⁇ slag removal ⁇ LF (slag) ⁇ slagging, power transmission and temperature rise ⁇ adjustment of C, Si, Mn, Cr, Ni, Mo and other components, temperature ⁇ sampling ⁇ composition, after the temperature is qualified, final deoxidation tapping ⁇ pouring.
  • the present invention may not limit the V content in the steel raw material. Therefore, it is possible to recycle the returned materials and steel shavings of hydropower stainless steel. Therefore, in a specific implementation manner, the smelted iron and steel material is selected from at least one of hydropower stainless steel return material and steel shavings.
  • the electric furnace rough refining adopts an oxidation method or a return method.
  • the rough refining in the electric furnace adopts the return method without oxygen blowing.
  • the ladle furnace VOD refining includes: LF, VOD + the first high vacuum ⁇ adding slag material, deoxidizer, adjusting chemical composition ⁇ LF, the second high vacuum for carbon deoxidation, that is, VCD.
  • the method for adjusting the chemical composition of the present invention can be an existing conventional method, such as adding lime, ferrosilicon, aluminum block, ferrochrome/ferromanganese and other ferroalloys.
  • the vacuum degrees of the first high vacuum and the second high vacuum are both ⁇ 133Pa.
  • the vanadium-controlled Cr13 type hydroelectric stainless steel is a steel grade with C ⁇ 0.06wt%, Cr ⁇ 14wt%, and V ⁇ 0.05wt%.
  • the vanadium-controlled Cr13 type hydroelectric stainless steel is: ZG04Cr13Ni4Mo, ZG04Cr13Ni5Mo, ZG06Cr13Ni4Mo, ZG06Cr13Ni5Mo, CA-6NM, ZG06Cr13Ni5Mo or ZG0Cr13Ni4Mo.
  • the electric furnace is smelted by the non-oxygen-blowing return method.
  • the steel ingredients include hydroelectric stainless steel return materials and mixed stainless steel scraps with unknown components (there is no limit on the content of residual element V).
  • the VOD station is for vacuum blowing oxygen decarburization operation, blowing C to below 0.02wt% and V below 0.05wt%. After the VOD operation (including two times of high vacuum), the ladle is hoisted to the slag tank for slag removal operation, and the oxide slag containing V 2 O 3 is removed to prevent the ladle furnace from re-slagging and diffusion deoxidation when refining molten steel , reduce the V in the slag into the molten steel.
  • the specific process flow is: material preparation ⁇ electric furnace without oxygen blowing return method to smelt crude water ⁇ LF (VOD, high vacuum 1) ⁇ adding slag material, deoxidizer, adjusting chemical composition ⁇ high vacuum 2 ⁇ slag removal ⁇ LF (slag) ⁇ Slag making, power transmission and temperature rise ⁇ adjust the composition and temperature of Cr, Ni, Mo, etc. ⁇ sampling ⁇ after the composition and temperature are qualified, final deoxidation and tapping ⁇ pouring.
  • the ladle is hoisted to the slag tank for slag removal operation, and the oxide slag containing V 2 O 3 is removed to prevent the ladle furnace from re-slagging and diffusion deoxidation when refining molten steel , reduce the V in the slag into the molten steel. Then return to the ladle furnace refining station for re-slagging and white slag refining operation.
  • Raw material preparation electric furnace oxidation method or returning method to smelt crude water ⁇ LF (slag) ⁇ power transmission and temperature rise ⁇ adjustment of Cr, Ni, Mo and other components and temperature ⁇ returning bag ⁇ LF (VOD, high vacuum 1) ⁇ adding slag material and deoxidation Chemical composition adjustment ⁇ high vacuum 2 ⁇ slag removal ⁇ LF (slag) ⁇ slagging, power transmission and temperature rise ⁇ adjustment of C, Si, Mn, Cr, Ni, Mo and other components, temperature ⁇ sampling ⁇ composition, temperature after passing , Final deoxidation tapping ⁇ pouring.
  • the vacuum degrees of high vacuum 1 and high vacuum 2 in Examples 1 to 35 are ⁇ 133Pa.

Abstract

The present invention relates to the technical field of metallurgy, and relates to a vanadium-controlled Cr13 type hydroelectric stainless steel smelting method. The vanadium-controlled Cr13 type hydroelectric stainless steel smelting method of the present invention comprises: when V in provided crude water or molten steel is greater than or equal to 0.05 wt%, performing a vacuum oxygen decarburization (VOD) operation on the crude water or molten steel to blow C to below 0.02 wt% and V to below 0.05 wt%, and after the VOD operation ends, performing a slagging-off operation. In the present invention, there is no need to limit the content of vanadium in an iron-steel material, and hydroelectric stainless steel return scrap and steel scrap instead of high-quality blocky scrap steel may be used as the iron-steel material, so that a large number of hydroelectric stainless steel stocks can be consumed. The use of a large amount of precious alloy is avoided, and the consumption quota is greatly reduced.

Description

控钒Cr13型水电不锈钢冶炼方法Smelting method of vanadium-controlled Cr13 type hydropower stainless steel
相关申请的交叉引用Cross References to Related Applications
本申请要求在2021年07月23日提交的中国专利申请CN 2021108375797的权益和优先权，并且在此全文引用该申请以作参考以及其它全部用途。This application claims the rights and priority of the Chinese patent application CN 2021108375797 submitted on July 23, 2021, and this application is cited in its entirety for reference and all other purposes.
技术领域technical field
本发明涉及一种控钒Cr13型水电不锈钢冶炼方法，属于冶金技术领域。The invention relates to a method for smelting vanadium-controlled Cr13 type hydroelectric stainless steel, which belongs to the technical field of metallurgy.
背景技术Background technique
生产控钒(V≤0.05wt％)的Cr13型水电不锈钢，如ZG04Cr13Ni4Mo、ZG04Cr13Ni5Mo铸件产品，生产流程一般为电炉粗炼→钢包炉熔渣精炼，调整成分→钢包炉VOD精炼→钢包炉微调成分→浇注。在冶炼过程中，电炉普遍采用氧化法和返回法两种方式冶炼粗水：(1)氧化法冶炼粗水(冶炼流程：备料→电炉氧化法冶炼粗水→LF(熔渣)→送电升温→调整Cr、Ni、Mo等成分、温度→倒包→LF(VOD，高真空)→送电升温→调整C、Si、Mn、Cr、Ni、Mo等成分、温度→取样→成分、温度合格后、终脱氧出钢→浇注铸件)，要求配入成分明确的钢铁料，用此类方法生产的优点是电炉提供的粗水V在≤0.01wt％以下，给钢包炉加入铁合金创造有利条件，不易造成V超过标准的现象，缺点是钢铁料成本高，由于电炉强氧化性，钢铁料中的Cr元素基本被氧化，无法回收。钢包炉加入铬铁量大，V容易超标且生产成本很高。(2)返回法冶炼粗水(冶炼流程：备料→电炉返回法冶炼粗水→LF(熔渣)→送电升温→调整Cr、Ni、Mo等成分、温度→倒包→LF(VOD，高真空)→送电升温→调整C、Si、Mn、Cr、Ni、Mo等成分、温度→取样→成分、温度合格后、终脱氧出钢→浇注)，要求配入本钢种或类似钢种(V≤0.05wt％)块状返回料和成分明确的废钢。用此类方法生产的优点是电炉提供的粗水基本保证V在≤0.05wt％以下，Cr元素回收率高，生产成本降低。缺点用此类方法生产，返回料限制严格且库存有限，同时仍会出现V超标的现象，不得不重新组织钢水冲淡，严重时钢水直接浇料块，从而导致钢水冶炼成本大幅增加。Production of Cr13 hydroelectric stainless steel with vanadium control (V≤0.05wt%), such as ZG04Cr13Ni4Mo, ZG04Cr13Ni5Mo casting products, the production process is generally electric furnace rough smelting→ladle furnace slag refining, composition adjustment→ladle furnace VOD refining→ladle furnace fine-tuning composition→ pouring. In the smelting process, electric furnaces generally use oxidation method and return method to smelt crude water: (1) oxidation method to smelt crude water (smelting process: raw material preparation → electric furnace oxidation method to smelt crude water → LF (slag) → power transmission and temperature rise →Adjust the composition and temperature of Cr, Ni, Mo, etc.→Invert the bag→LF (VOD, high vacuum)→Power transmission and temperature rise→Adjust the composition and temperature of C, Si, Mn, Cr, Ni, Mo, etc.→Sampling→Qualified composition and temperature Finally, final deoxidation and tapping → pouring castings), it is required to add iron and steel material with clear composition. The advantage of this method of production is that the crude water V provided by the electric furnace is below ≤0.01wt%, which creates favorable conditions for adding ferroalloy to the ladle furnace. It is not easy to cause V to exceed the standard. The disadvantage is that the cost of the steel material is high. Due to the strong oxidation of the electric furnace, the Cr element in the steel material is basically oxidized and cannot be recycled. The amount of ferrochrome added to the ladle furnace is large, V is easy to exceed the standard and the production cost is high. (2) Return method to smelt crude water (smelting process: material preparation → electric furnace return method to smelt crude water → LF (slag) → power transmission to increase temperature → adjust the composition and temperature of Cr, Ni, Mo, etc. → pour bag → LF (VOD, high Vacuum) → power transmission and temperature rise → adjust C, Si, Mn, Cr, Ni, Mo and other components, temperature → sampling → composition, after the temperature is qualified, final deoxidation and tapping → pouring), it is required to mix this steel or similar steel (V≤0.05wt%) Lumpy return material and steel scrap with defined composition. The advantage of this kind of production method is that the crude water provided by the electric furnace basically guarantees that V is less than or equal to 0.05wt%, the recovery rate of Cr element is high, and the production cost is reduced. Disadvantages: Production by this method has strict restrictions on returned materials and limited inventory. At the same time, the phenomenon of V exceeding the standard will still occur. It is necessary to reorganize the molten steel for dilution.
由于在Cr13型水电不锈钢冶炼过程炼钢不会特意加钒元素，钒元素均为大量的铬铁合金带入，使用普通铬铁生产V≤0.05wt％的Cr13型水电不锈钢很难达到要求，而 搭配的微铬合金、金属铬的生产成本又太高。从铬铁的生产流程及使用的原料等方面看，铬铁中的残余钒来之于铬铁矿，其含量完全取决于分布全球不同铬铁矿产地资源中V的多少，就现有的技术水平，残余V是无法从铬铁中去除的。因此，许多炼钢工程师重点研究生产控钒(V≤0.05wt％)的Cr13型水电不锈钢的相关工作，以降低生产成本。Since no vanadium element is intentionally added during the Cr13 hydroelectric stainless steel smelting process, the vanadium element is brought in by a large amount of ferrochromium alloy, and it is difficult to meet the requirements of Cr13 hydroelectric stainless steel with V≤0.05wt% produced by using ordinary ferrochrome. The production cost of micro-chromium alloy and metal chromium is too high. From the perspective of the production process of ferrochrome and the raw materials used, the residual vanadium in ferrochrome comes from chromite ore, and its content depends entirely on the amount of V in the resources of different chromite origins in the world. As far as the existing technology is concerned Level, residual V cannot be removed from ferrochrome. Therefore, many steelmaking engineers focus on the production of Cr13 hydroelectric stainless steel with vanadium control (V≤0.05wt%) to reduce production costs.
罗玉立.水电不锈钢V的来源及对力学性能的影响分析[C]//安徽铸造学会；北京铸造学会；重庆铸造学会；福建铸造学会；甘肃铸造学会，2014.公开铬铁矿中有V，是无法在生产过程中去除的，铬铁中V的含量控制在0.15～0.20wt％，氧化法冶炼，铬铁带入的V在0.022～0.041wt％之间，加之电炉粗水的残余V，产品V的含量基本在0.03～0.05wt％，考虑V的偏析，工件局部V会高于0.05wt％。返回法根本无法使用。Luo Yuli. Analysis of the source of V in hydropower stainless steel and its influence on mechanical properties[C]//Anhui Foundry Society; Beijing Foundry Society; Chongqing Foundry Society; Fujian Foundry Society; If it cannot be removed in the production process, the V content in ferrochrome should be controlled at 0.15-0.20wt%, and the V content brought into ferrochrome by oxidation method should be between 0.022-0.041wt%. The content of V is basically 0.03-0.05wt%, considering the segregation of V, the local V of the workpiece will be higher than 0.05wt%. The return method doesn't work at all.
发明内容Contents of the invention
本发明要解决的技术问题是提供一种新的控钒Cr13型水电不锈钢冶炼方法。The technical problem to be solved by the present invention is to provide a new vanadium-controlled Cr13 type hydroelectric stainless steel smelting method.
为解决上述技术问题，本发明的控钒Cr13型水电不锈钢冶炼方法包括：For solving the problems of the technologies described above, the vanadium-controlled Cr13 type hydroelectric stainless steel smelting method of the present invention comprises:
当提供的粗水或钢液V≥0.05wt％时，将粗水或钢液进行真空吹氧脱碳操作，将C吹至0.02wt％以下、V吹至0.05wt％以下，VOD操作结束后，进行扒渣操作。When the crude water or molten steel V ≥ 0.05wt% is provided, the crude water or molten steel is subjected to vacuum blowing oxygen decarburization operation, blowing C to below 0.02wt%, blowing V to below 0.05wt%, after the VOD operation is completed , to carry out the slag removal operation.
一般的粗水或钢液进行一次上述操作即可。The above-mentioned operation can be carried out once for general crude water or molten steel.
如果粗水或钢液中V的含量过高，则有可能进行一次上述操作后V含量还大于0.05wt％，重复进行真空吹氧脱碳操作，将C吹至0.02wt％以下、V吹至0.05wt％以下，VOD操作结束后，进行扒渣操作即可，直到V含量0.05wt％以下。If the V content in crude water or molten steel is too high, it is possible that the V content will be greater than 0.05wt% after the above-mentioned operation is carried out once, and the vacuum oxygen blowing decarburization operation is repeated, and C is blown to below 0.02wt%, and V is blown to 0.05wt% or less, after the VOD operation is completed, the slag removal operation can be carried out until the V content is less than 0.05wt%.
在一种具体实施方式中，当提供的粗水V≥0.05wt％时，采用的工艺流程为：电炉粗炼→钢包炉VOD精炼→扒渣，去除氧化渣→钢包炉重新造渣精炼，调整成分→浇注；In a specific embodiment, when the supplied crude water V≥0.05wt%, the adopted process flow is: rough smelting in electric furnace → VOD refining in ladle furnace → slag removal, removal of oxide slag → re-slag refining in ladle furnace, adjustment ingredients → pouring;
当钢包炉精炼过程V≥0.05wt％时，采用的工艺流程为：电炉粗炼→钢包炉熔渣精炼→钢包炉VOD精炼→扒渣，去除氧化渣→钢包炉重新造渣精炼，调整成分→浇注；When the ladle furnace refining process V≥0.05wt%, the adopted technological process is: electric furnace rough smelting → ladle furnace slag refining → ladle furnace VOD refining → slag removal, removal of oxide slag → ladle furnace re-slag refining, adjusting composition → pouring;
其中，钢包炉VOD精炼为真空吹氧脱碳操作。Among them, the ladle furnace VOD refining is a vacuum blowing oxygen decarburization operation.
本发明可以不对钢铁原料中的V含量限制。因此可以将水电不锈钢返回料、钢屑等回收利用。因此在一种具体实施方式中，所述冶炼的钢铁料选择水电不锈钢返回料、钢屑中的至少一种。The present invention may not limit the V content in the steel raw material. Therefore, it is possible to recycle the returned materials and steel shavings of hydropower stainless steel. Therefore, in a specific implementation manner, the smelted iron and steel material is selected from at least one of hydropower stainless steel return material and steel shavings.
在一种具体实施方式中，所述电炉粗炼采用氧化法或返回法。In a specific embodiment, the electric furnace rough refining adopts an oxidation method or a return method.
在一种具体实施方式中，所述电炉粗炼采用不吹氧返回法。In a specific embodiment, the rough refining in the electric furnace adopts the return method without oxygen blowing.
在一种具体实施方式中，所述钢包炉VOD精炼包括：LF，VOD+第一次高真空→加渣料、脱氧剂、调整化学成分→LF，第二次高真空进行碳脱氧，即VCD。In a specific embodiment, the ladle furnace VOD refining includes: LF, VOD + the first high vacuum → adding slag material, deoxidizer, adjusting chemical composition → LF, the second high vacuum for carbon deoxidation, that is, VCD.
本发明调整化学成分的方法可以为现有常规的方法，例如加石灰、硅铁、铝块、铬铁/锰铁等铁合金。The method for adjusting the chemical composition of the present invention can be an existing conventional method, such as adding lime, ferrosilicon, aluminum block, ferrochrome/ferromanganese and other ferroalloys.
在一种具体实施方式中，所述第一次高真空和第二次高真空的真空度均≤133Pa。In a specific implementation manner, the vacuum degrees of the first high vacuum and the second high vacuum are both ≤133Pa.
在一种具体实施方式中，所述控钒Cr13型水电不锈钢为C≤0.06wt％、Cr≤14wt％、V≤0.05wt％的钢种。In a specific implementation manner, the vanadium-controlled Cr13 type hydroelectric stainless steel is a steel grade with C≤0.06wt%, Cr≤14wt%, and V≤0.05wt%.
在一种具体实施方式中，所述控钒Cr13型水电不锈钢为：ZG04Cr13Ni4Mo、ZG04Cr13Ni5Mo、ZG06Cr13Ni4Mo、ZG06Cr13Ni5Mo、CA-6NM、ZG06Cr13Ni5Mo或ZG0Cr13Ni4Mo。In a specific embodiment, the vanadium-controlled Cr13 type hydroelectric stainless steel is: ZG04Cr13Ni4Mo, ZG04Cr13Ni5Mo, ZG06Cr13Ni4Mo, ZG06Cr13Ni5Mo, CA-6NM, ZG06Cr13Ni5Mo or ZG0Cr13Ni4Mo.
有益效果Beneficial effect
与传统的氧化法和还原法冶炼方式相比，本发明的创新点在于：Compared with traditional oxidation and reduction smelting methods, the innovation of the present invention lies in:
1.钢铁料无限制要求1. Unlimited requirements for steel materials
不需要限制钢铁料钒的含量，钢铁料可以不使用优质块状废钢，使用水电不锈钢返回料和钢屑，可大量消化水电不锈钢库存。过去，钢包炉精炼过程中，如加入合金时出现异常情况，造成V超过0.05wt％时，该炉钢水只有报废。采用本发明的方法可以把调整好化学成分的钢液倒入镁铬包，进行VOD操作，去钒、去碳、保铬，其后进行扒渣操作，去除氧化渣，最终将V降至标准范围内。There is no need to limit the vanadium content of iron and steel materials. High-quality massive scrap steel can be used instead of high-quality block steel scrap. Hydropower stainless steel return materials and steel shavings can be used to digest a large amount of hydropower stainless steel stocks. In the past, during the refining process of the ladle furnace, if there was an abnormal situation when adding the alloy, causing V to exceed 0.05wt%, the molten steel in the furnace had to be scrapped. By adopting the method of the present invention, the molten steel whose chemical composition has been adjusted can be poured into the magnesium-chromium ladle for VOD operation to remove vanadium, carbon, and chromium, and then carry out slag removal operation to remove oxide slag, and finally reduce V to the standard within range.
2.本发明的方法去钒、去碳、保铬。2. The method of the present invention removes vanadium, carbon, and chromium.
3.节约大量的贵重合金使用量3. Save a lot of precious alloy usage
采用新型返回法冶炼方式，电炉提供的粗水在经过VOD后，钢液中的Cr、Ni、Mo含量基本接近标准出钢要求，因此，在钢包炉冶炼时，只需少量的低钒铬铁等合金来调整C、Cr含量，可节约大量的贵重合金使用量。Using the new return method smelting method, after the crude water provided by the electric furnace passes through VOD, the contents of Cr, Ni and Mo in the molten steel are basically close to the standard tapping requirements, therefore, only a small amount of low-vanadium-chromium ferrochrome is required for smelting in the ladle furnace And other alloys to adjust the C, Cr content, can save a lot of precious alloy usage.
4.大幅度降低消耗定额4. Significantly reduce the consumption quota
采用新型返回法冶炼方式，大概比氧化法方式节约1353元/t钢水。Using the new return method smelting method saves about 1353 yuan/t of molten steel compared with the oxidation method.
5.可节约一个镁碳包。5. It can save a magnesium carbon bag.
附图说明Description of drawings
图1倒包；Figure 1 flipping the package;
图2氧化渣去除后，扩散脱氧；Figure 2 Diffusion deoxidation after oxidation slag removal;
图3出钢前白渣；Figure 3 White slag before tapping;
图4钒含量分布图；Fig. 4 vanadium content distribution diagram;
图5氧含量分布图。Figure 5 Oxygen content distribution diagram.
具体实施方式detailed description
为解决上述技术问题，本发明的控钒Cr13型水电不锈钢冶炼方法包括：For solving the problems of the technologies described above, the vanadium-controlled Cr13 type hydroelectric stainless steel smelting method of the present invention comprises:
当提供的粗水或钢液V≥0.05wt％时，将粗水或钢液进行真空吹氧脱碳操作，将C吹至0.05wt％以下、V吹至0.05wt％以下，VOD操作结束后，进行扒渣操作。When the crude water or molten steel V ≥ 0.05wt% is provided, the crude water or molten steel is subjected to vacuum blowing oxygen decarburization operation, blowing C to below 0.05wt%, blowing V to below 0.05wt%, after the VOD operation , to carry out the slag removal operation.
在一种具体实施方式中，当提供的粗水V≥0.05wt％时，采用的工艺流程为：电炉粗炼→钢包炉VOD精炼→扒渣，去除氧化渣→钢包炉重新造渣精炼，调整成分→浇注；In a specific embodiment, when the supplied crude water V≥0.05wt%, the adopted process flow is: rough smelting in electric furnace → VOD refining in ladle furnace → slag removal, removal of oxide slag → re-slag refining in ladle furnace, adjustment ingredients → pouring;
当钢包炉精炼过程V≥0.05wt％时，采用的工艺流程为：电炉粗炼→钢包炉熔渣精炼→钢包炉VOD精炼→扒渣，去除氧化渣→钢包炉重新造渣精炼，调整成分→浇注；When the ladle furnace refining process V≥0.05wt%, the adopted technological process is: electric furnace rough smelting → ladle furnace slag refining → ladle furnace VOD refining → slag removal, removal of oxide slag → ladle furnace re-slag refining, adjusting composition → pouring;
其中，钢包炉VOD精炼为真空吹氧脱碳操作。Among them, the ladle furnace VOD refining is a vacuum blowing oxygen decarburization operation.
在一种具体实施方式中，电炉粗水V≥0.05wt％时，采用的工艺流程为：In a specific embodiment, when the electric furnace crude water V≥0.05wt%, the technological process adopted is:
备料→电炉不吹氧返回法冶炼粗水→LF(VOD，HV)→扒渣→LF(熔渣)→造渣、送电升温→调整Cr、Ni、Mo等成分、温度→取样→成分、温度合格后、终脱氧出钢→浇注。Raw material preparation → electric furnace without oxygen blowing return method to smelt crude water → LF (VOD, HV) → slag removal → LF (slag) → slagging, power transmission and temperature rise → adjust the composition and temperature of Cr, Ni, Mo, etc. → sampling → composition, After the temperature is qualified, the final deoxidation tapping → pouring.
在一种具体实施方式中，钢包炉精炼过程V≥0.05wt％时，采用的工艺流程为：In a specific embodiment, when the ladle furnace refining process V≥0.05wt%, the technological process adopted is:
备料→电炉氧化法或不吹氧返回法冶炼粗水→LF(熔渣)→送电升温→调整Cr、Ni、Mo等成分、温度→倒包→LF(VOD，高真空)→扒渣→LF(熔渣)→造渣、送电升温→调整C、Si、Mn、Cr、Ni、Mo等成分、温度→取样→成分、温度合格后、终脱氧出钢→浇注。Raw material preparation→electric furnace oxidation method or non-oxygen blowing return method to smelt crude water→LF (slag)→power transmission and temperature rise→adjustment of Cr, Ni, Mo and other components and temperature→returning→LF(VOD, high vacuum)→slag removal→ LF (slag) → slagging, power transmission and temperature rise → adjustment of C, Si, Mn, Cr, Ni, Mo and other components, temperature → sampling → composition, after the temperature is qualified, final deoxidation tapping → pouring.
本发明可以不对钢铁原料中的V含量限制。因此可以将水电不锈钢返回料、钢屑等回收利用。因此在一种具体实施方式中，所述冶炼的钢铁料选择水电不锈钢返回料、钢屑中的至少一种。The present invention may not limit the V content in the steel raw material. Therefore, it is possible to recycle the returned materials and steel shavings of hydropower stainless steel. Therefore, in a specific implementation manner, the smelted iron and steel material is selected from at least one of hydropower stainless steel return material and steel shavings.
在一种具体实施方式中，所述电炉粗炼采用氧化法或返回法。In a specific embodiment, the electric furnace rough refining adopts an oxidation method or a return method.
在一种具体实施方式中，所述电炉粗炼采用不吹氧返回法。In a specific embodiment, the rough refining in the electric furnace adopts the return method without oxygen blowing.
在一种具体实施方式中，所述钢包炉VOD精炼包括：LF，VOD+第一次高真空→加渣料、脱氧剂、调整化学成分→LF，第二次高真空进行碳脱氧，即VCD。In a specific embodiment, the ladle furnace VOD refining includes: LF, VOD + the first high vacuum → adding slag material, deoxidizer, adjusting chemical composition → LF, the second high vacuum for carbon deoxidation, that is, VCD.
本发明调整化学成分的方法可以为现有常规的方法，例如加石灰、硅铁、铝块、铬铁/锰铁等铁合金。The method for adjusting the chemical composition of the present invention can be an existing conventional method, such as adding lime, ferrosilicon, aluminum block, ferrochrome/ferromanganese and other ferroalloys.
在一种具体实施方式中，所述第一次高真空和第二次高真空的真空度均≤133Pa。In a specific implementation manner, the vacuum degrees of the first high vacuum and the second high vacuum are both ≤133Pa.
在一种具体实施方式中，所述控钒Cr13型水电不锈钢为C≤0.06wt％、Cr≤14wt％、V≤0.05wt％的钢种。In a specific implementation manner, the vanadium-controlled Cr13 type hydroelectric stainless steel is a steel grade with C≤0.06wt%, Cr≤14wt%, and V≤0.05wt%.
在一种具体实施方式中，所述控钒Cr13型水电不锈钢为：ZG04Cr13Ni4Mo、ZG04Cr13Ni5Mo、ZG06Cr13Ni4Mo、ZG06Cr13Ni5Mo、CA-6NM、ZG06Cr13Ni5Mo或ZG0Cr13Ni4Mo。In a specific embodiment, the vanadium-controlled Cr13 type hydroelectric stainless steel is: ZG04Cr13Ni4Mo, ZG04Cr13Ni5Mo, ZG06Cr13Ni4Mo, ZG06Cr13Ni5Mo, CA-6NM, ZG06Cr13Ni5Mo or ZG0Cr13Ni4Mo.
下面结合实施例对本发明的具体实施方式做进一步的描述，并不因此将本发明限制在所述的实施例范围之中。The specific implementation of the present invention will be further described below in conjunction with the examples, and the present invention is not limited to the scope of the examples.
实施例1～35Examples 1-35
电炉采用不吹氧返回法冶炼，钢铁配料有水电不锈钢返回料和成分不明的混杂不锈钢钢屑(不对残余元素V含量限制)，当提供的粗水V 0.05wt％以上，直接将粗水吊至VOD工位，进行真空吹氧脱碳操作，将C吹至0.02wt％以下、V吹至0.05wt％以下。VOD操作结束后(包括两次高真空)，将钢包吊至渣罐处进行扒渣操作，将含有V 2O 3的氧化渣去除干净，防止钢包炉重新造渣、扩散脱氧精炼钢水时，把渣中V还原进钢水。随后回到钢包炉精炼工位进行重新造白渣精炼操作。具体的工艺流程为：备料→电炉不吹氧返回法冶炼粗水→LF(VOD，高真空1)→加渣料、脱氧剂、调整化学成分→高真空2→扒渣→LF(熔渣)→造渣、送电升温→调整Cr、Ni、Mo等成分、温度→取样→成分、温度合格后、终脱氧出钢→浇注。 The electric furnace is smelted by the non-oxygen-blowing return method. The steel ingredients include hydroelectric stainless steel return materials and mixed stainless steel scraps with unknown components (there is no limit on the content of residual element V). The VOD station is for vacuum blowing oxygen decarburization operation, blowing C to below 0.02wt% and V below 0.05wt%. After the VOD operation (including two times of high vacuum), the ladle is hoisted to the slag tank for slag removal operation, and the oxide slag containing V 2 O 3 is removed to prevent the ladle furnace from re-slagging and diffusion deoxidation when refining molten steel , reduce the V in the slag into the molten steel. Then return to the ladle furnace refining station to carry out the white slag refining operation again. The specific process flow is: material preparation → electric furnace without oxygen blowing return method to smelt crude water → LF (VOD, high vacuum 1) → adding slag material, deoxidizer, adjusting chemical composition → high vacuum 2 → slag removal → LF (slag) → Slag making, power transmission and temperature rise → adjust the composition and temperature of Cr, Ni, Mo, etc. → sampling → after the composition and temperature are qualified, final deoxidation and tapping → pouring.
当提供的粗水V≤0.05wt％时，钢包炉中加入价格相对低的高铬和中铬合金，该两种铁合金不对V含量作限制要求，高铬和中铬合金中的V含量作基本在0.22％以上，铁合金熔化后，钢液中的V含量基本在0.08％左右，超过标准要求，此时将钢包吊至VOD工位，进行真空吹氧脱碳操作，将C吹至0.02wt％以下、V吹至0.05wt％以下。VOD操作结束后(包括两次高真空)，将钢包吊至渣罐处进行扒渣操作，将含有V 2O 3的氧化渣去除干净，防止钢包炉重新造渣、扩散脱氧精炼钢水时，把渣中V还原进钢水。随后回到钢包炉精炼工位进行重新造渣白渣精炼操作。 When the crude water V≤0.05wt% is supplied, relatively low-priced high-chromium and medium-chromium alloys are added to the ladle furnace. These two iron alloys do not impose restrictions on the V content, and the V content in the high-chromium and medium-chromium alloys is used as the basic Above 0.22%, after the iron alloy is melted, the V content in the molten steel is basically about 0.08%, which exceeds the standard requirement. At this time, the ladle is hoisted to the VOD station, and the vacuum blowing oxygen decarburization operation is carried out, and the C is blown to 0.02wt%. Below, V is blown to 0.05wt% or less. After the VOD operation (including two times of high vacuum), the ladle is hoisted to the slag tank for slag removal operation, and the oxide slag containing V 2 O 3 is removed to prevent the ladle furnace from re-slagging and diffusion deoxidation when refining molten steel , reduce the V in the slag into the molten steel. Then return to the ladle furnace refining station for re-slagging and white slag refining operation.
备料→电炉氧化法或返回法冶炼粗水→LF(熔渣)→送电升温→调整Cr、Ni、 Mo等成分、温度→倒包→LF(VOD，高真空1)→加渣料、脱氧剂、调整化学成分→高真空2→扒渣→LF(熔渣)→造渣、送电升温→调整C、Si、Mn、Cr、Ni、Mo等成分、温度→取样→成分、温度合格后、终脱氧出钢→浇注。实施例1～35的高真空1分别为和高真空2的真空度为≤133Pa。Raw material preparation→electric furnace oxidation method or returning method to smelt crude water→LF (slag)→power transmission and temperature rise→adjustment of Cr, Ni, Mo and other components and temperature→returning bag→LF (VOD, high vacuum 1)→adding slag material and deoxidation Chemical composition adjustment → high vacuum 2 → slag removal → LF (slag) → slagging, power transmission and temperature rise → adjustment of C, Si, Mn, Cr, Ni, Mo and other components, temperature → sampling → composition, temperature after passing , Final deoxidation tapping → pouring. The vacuum degrees of high vacuum 1 and high vacuum 2 in Examples 1 to 35 are ≤133Pa.
采用上述冶炼方式生产了将近300件叶片，V含量均达到了≤0.05wt％，氧含量基本在60ppm以下，分布图见图4、图5。部分产品实际V、O含量见表1。Nearly 300 pieces of blades have been produced by the above-mentioned smelting method, and the V content has reached ≤0.05wt%, and the oxygen content is basically below 60ppm. The distribution diagrams are shown in Figure 4 and Figure 5. The actual V and O contents of some products are shown in Table 1.
表1产品实际V、O含量(％)The actual V and O content of the product in Table 1 (%)
Figure PCTCN2022083689-appb-000001
Figure PCTCN2022083689-appb-000001
Figure PCTCN2022083689-appb-000002
Figure PCTCN2022083689-appb-000002

Claims (9)

  1. 控钒Cr13型水电不锈钢冶炼方法，其特征在于，所述方法包括：The vanadium-controlled Cr13 type hydroelectric stainless steel smelting method is characterized in that the method includes:
    当提供的粗水或钢液V≥0.05wt％时，将粗水或钢液进行真空吹氧脱碳操作，将C吹至0.02wt％以下、V吹至0.05wt％以下，VOD操作结束后，进行扒渣操作。When the crude water or molten steel V ≥ 0.05wt% is provided, the crude water or molten steel is subjected to vacuum blowing oxygen decarburization operation, blowing C to below 0.02wt%, blowing V to below 0.05wt%, after the VOD operation is completed , to carry out the slag removal operation.
  2. 根据权利要求1所述的控钒Cr13型水电不锈钢冶炼方法，其特征在于，The vanadium-controlled Cr13 type hydroelectric stainless steel smelting method according to claim 1, characterized in that,
    当提供的粗水V≥0.05wt％时，采用的工艺流程为：电炉粗炼→钢包炉VOD精炼→扒渣，去除氧化渣→钢包炉重新造渣精炼，调整成分→浇注；When the supplied crude water V≥0.05wt%, the adopted process flow is: rough refining in electric furnace → VOD refining in ladle furnace → slag removal, removal of oxide slag → re-slag refining in ladle furnace, adjusting composition → pouring;
    当钢包炉精炼过程V≥0.05wt％时，采用的工艺流程为：电炉粗炼→钢包炉熔渣精炼→钢包炉VOD精炼→扒渣，去除氧化渣→钢包炉重新造渣精炼，调整成分→浇注；When the ladle furnace refining process V≥0.05wt%, the adopted technological process is: electric furnace rough smelting → ladle furnace slag refining → ladle furnace VOD refining → slag removal, removal of oxide slag → ladle furnace re-slag refining, adjusting composition → pouring;
    其中，钢包炉VOD精炼为真空吹氧脱碳操作。Among them, the ladle furnace VOD refining is a vacuum blowing oxygen decarburization operation.
  3. 根据权利要求1或2所述的控钒Cr13型水电不锈钢冶炼方法，其特征在于，所述冶炼的钢铁料选择水电不锈钢返回料、钢屑中的至少一种。The vanadium-controlled Cr13 type hydroelectric stainless steel smelting method according to claim 1 or 2, characterized in that the smelted iron and steel material is selected from at least one of hydroelectric stainless steel return material and steel shavings.
  4. 根据权利要求1或2所述的控钒Cr13型水电不锈钢冶炼方法，其特征在于，所述电炉粗炼采用氧化法或返回法。The vanadium-controlled Cr13 type hydroelectric stainless steel smelting method according to claim 1 or 2, characterized in that the oxidation method or return method is used for the rough refining in the electric furnace.
  5. 根据权利要求4所述的控钒Cr13型水电不锈钢冶炼方法，其特征在于，所述电炉粗炼采用不吹氧返回法。The vanadium-controlled Cr13 type hydroelectric stainless steel smelting method according to claim 4, characterized in that the rough refining in the electric furnace adopts the return method without oxygen blowing.
  6. 根据权利要求1或2所述的控钒Cr13型水电不锈钢冶炼方法，其特征在于，所述钢包炉VOD精炼包括：LF，VOD+第一次高真空→加渣料、脱氧剂、调整化学成分→LF，第二次高真空进行碳脱氧。The vanadium-controlled Cr13 type hydroelectric stainless steel smelting method according to claim 1 or 2, characterized in that the ladle furnace VOD refining includes: LF, VOD + first high vacuum → adding slag material, deoxidizer, adjusting chemical composition → LF, second high vacuum for carbon deoxygenation.
  7. 根据权利要求6所述的控钒Cr13型水电不锈钢冶炼方法，其特征在于，所述第一次高真空和第二次高真空的真空度均≤133Pa。The vanadium-controlled Cr13 type hydroelectric stainless steel smelting method according to claim 6, characterized in that the vacuum degrees of the first high vacuum and the second high vacuum are both ≤133Pa.
  8. 根据权利要求1或2所述的控钒Cr13型水电不锈钢冶炼方法，其特征在于，所述控钒Cr13型水电不锈钢为C≤0.06wt％、Cr≤14wt％、V≤0.05wt％的钢种。The method for smelting vanadium-controlled Cr13 type hydroelectric stainless steel according to claim 1 or 2, characterized in that the vanadium-controlled Cr13 type hydroelectric stainless steel is a steel grade with C≤0.06wt%, Cr≤14wt%, V≤0.05wt% .
  9. 根据权利要求8所述的控钒Cr13型水电不锈钢冶炼方法，其特征在于，所述控钒Cr13型水电不锈钢为ZG04Cr13Ni4Mo、ZG04Cr13Ni5Mo、ZG06Cr13Ni4Mo、ZG06Cr13Ni5Mo、CA-6NM、ZG06Cr13Ni5Mo或ZG0Cr13Ni4Mo。The method for smelting vanadium-controlled Cr13 type hydroelectric stainless steel according to claim 8, wherein the vanadium-controlled Cr13 type hydroelectric stainless steel is ZG04Cr13Ni4Mo, ZG04Cr13Ni5Mo, ZG06Cr13Ni4Mo, ZG06Cr13Ni5Mo, CA-6NM, ZG06Cr13Ni5Mo or ZG0Cr13Ni4Mo.
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