WO2021092737A1 - 一种耐磨金属材料及其制造方法 - Google Patents

一种耐磨金属材料及其制造方法 Download PDF

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WO2021092737A1
WO2021092737A1 PCT/CN2019/117307 CN2019117307W WO2021092737A1 WO 2021092737 A1 WO2021092737 A1 WO 2021092737A1 CN 2019117307 W CN2019117307 W CN 2019117307W WO 2021092737 A1 WO2021092737 A1 WO 2021092737A1
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weight
parts
wear
metal material
resistant metal
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PCT/CN2019/117307
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French (fr)
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陈红林
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常德菲尔美化工技术有限公司
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Priority to PCT/CN2019/117307 priority Critical patent/WO2021092737A1/zh
Publication of WO2021092737A1 publication Critical patent/WO2021092737A1/zh

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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
    • 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
    • C22C38/32—Ferrous alloys, e.g. steel alloys containing chromium with boron
    • 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
    • C22C38/36—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.7% by weight of carbon
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
    • C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
    • C23C8/20—Carburising
    • C23C8/22—Carburising of ferrous surfaces

Definitions

  • the invention relates to the technical field of steel material processing, in particular to a wear-resistant metal material and a manufacturing method thereof.
  • Material wear is one of the important reasons for equipment loss, and one of the processes to improve the wear resistance of materials is carburizing. However, it is difficult for the carbon to penetrate deeply when the existing materials are carburized, and due to the thickness of the material, when the material is quenched, the internal The cooling rate is not enough, and it is difficult to transform into martensite with higher hardness, resulting in insufficient overall hardness and wear resistance of the material.
  • the existing wear-resistant steel usually adds V and C to form the VC phase (HV2600) to improve the hardness and wear resistance of the material.
  • V2600 VC phase
  • the hardness and wear resistance are still insufficient for certain specific fields and need to be further improved.
  • the purpose of the present invention is to overcome the shortcomings of the prior art.
  • the present invention improves the hardenability of the material through the addition of B and Mo elements, ensures that the material quenching is consistent with the transformation of internal and external characteristics, and adds a suitable amount of elements.
  • a wear-resistant metal material comprising 80.13-85.4 parts by weight of Fe; 2.67-3.38 parts by weight of Ti; 3.54-5.93 parts by weight of V; 1-2 parts by weight of C; 0.1-0.5 parts by weight of Mn; 0.60 ⁇ 1.5 parts by weight of Mo, 0.0015 to 0.0050 parts by weight of B; 0.05 to 0.50 parts by weight of Si; P ⁇ 0.02%, S ⁇ 0.02%.
  • Further improvements include 83.6 parts by weight of Fe; 3.05 parts by weight of Ti; 4.8 parts by weight of V; 1.6 parts by weight of C; 0.4 parts by weight of Mn; 1.2 parts by weight of Mo, 0.0025 parts by weight of B; 0.15 parts by weight Si; P ⁇ 0.02%, S ⁇ 0.02%.
  • a manufacturing method of wear-resistant metal material includes the following steps:
  • Step 1 Add 80.13-85.4 parts by weight of Fe, Fe containing 0.5-0.8 parts by weight of C; 2.67-3.38 parts by weight of Ti; 3.54-5.93 parts by weight of V; 0.1-0.5 parts by weight of Mn; 0.60-1.5 Parts by weight of Mo, 0.0015 ⁇ 0.0050 parts by weight of B; 0.05 ⁇ 0.50 parts by weight of Si are added to the electric furnace to melt, and the melting temperature is 1600-1650°C;
  • Step two casting and forming, after casting for 1 to 3 hours, air cooling to obtain castings;
  • Step 3 Put the castings into the carburizing furnace.
  • the carburizing furnace is fed with carburizing gas.
  • the external carbon potential is controlled to 1.1% and kept for 2.5 to 5 hours; the temperature is maintained at 860 to 890°C for 3 to 5 hours;
  • Step 3 Intensive infiltration: heat the carburizing furnace to 920°C, and then keep the casting in an environment with a carbon potential of 1.25% for 2 to 3 hours; until the C content in the casting reaches 1 to 2 parts by weight;
  • Step 4 Decrease the temperature and carbon potential in the carburizing furnace to 900°C and 0.85%, respectively, and keep the temperature for 2 hours;
  • Step 5 Reduce the temperature in the carburizing furnace to 810 ⁇ 860°C, reduce the internal stress and distortion caused by quenching, stop the carburizing gas, and then reduce the furnace temperature to 730 ⁇ 760°C, and keep it for 8 ⁇ 12min ;
  • Step 6 Take out the casting and immerse it in water, stir the water, and exchange heat between the water and the tooth surface, and quickly cool to room temperature to obtain a wear-resistant metal material.
  • the wear-resistant metal material includes 1.6 parts by weight of C.
  • a manufacturing method of wear-resistant metal material includes the following steps:
  • Step 1 80.13 parts by weight of Fe, Fe containing 0.5 parts by weight of C; 2.67 parts by weight of Ti; 3.54 parts by weight of V; 0.1 parts by weight of Mn; 0.60 parts by weight of Mo, 0.0015 parts by weight of B; 0.05 Part by weight of Si is added to the electric furnace to melt, and the melting temperature is 1600-1650°C;
  • Step two casting and forming, 1h after casting, air cooling to obtain castings
  • Step 3 Put the castings into the carburizing furnace, and the carburizing furnace is fed with carburizing gas, the external carbon potential is controlled to 1.1%, and the temperature is maintained for 2.5 hours; the temperature is maintained at 890°C for 3 hours;
  • Step three strong infiltration: heat the carburizing furnace to 920°C, and then keep the casting in an environment with a carbon potential of 1.25% for 2 hours; until the C content in the casting reaches 1 part by weight;
  • Step 4 Decrease the temperature and carbon potential in the carburizing furnace to 900°C and 0.85%, respectively, and keep the temperature for 2 hours;
  • Step 5 Lower the temperature in the carburizing furnace to 810°C, reduce the internal stress and distortion caused by quenching, stop passing carburizing gas, and then lower the furnace temperature to 730°C and keep it warm for 8-12 minutes;
  • Step 6 Take out the casting and immerse it in water, stir the water, and exchange heat between the water and the tooth surface, and quickly cool to room temperature to obtain a wear-resistant metal material.
  • a manufacturing method of wear-resistant metal material includes the following steps:
  • Step 1 85.4 parts by weight of Fe, Fe containing 0.8 parts by weight of C; 3.38 parts by weight of Ti; 5.93 parts by weight of V; 0.5 parts by weight of Mn; 1.5 parts by weight of Mo, 0.0050 parts by weight of B; 0.50 Part by weight of Si is added to the electric furnace to melt, and the melting temperature is 1650°C;
  • Step two casting and forming, after casting for 1 to 3 hours, air cooling to obtain castings;
  • Step 3 Put the castings into the carburizing furnace, inject carburizing gas into the carburizing furnace, control the external carbon potential to 1.1%, and keep it for 5 hours; keep the temperature at 860°C for 3 to 5 hours;
  • Step three strong infiltration: heat the carburizing furnace to 920°C, and then keep the casting in an environment with a carbon potential of 1.25% for 3 hours; until the C content in the casting reaches 2 parts by weight;
  • Step 4 Decrease the temperature and carbon potential in the carburizing furnace to 900°C and 0.85%, respectively, and keep the temperature for 2 hours;
  • Step 5 Lower the temperature in the carburizing furnace to 860°C, reduce the internal stress and distortion caused by quenching, stop passing carburizing gas, and then lower the furnace temperature to 760°C and keep it warm for 8-12 minutes;
  • Step 6 Take out the casting and immerse it in water, stir the water, and exchange heat between the water and the tooth surface, and quickly cool to room temperature to obtain a wear-resistant metal material.
  • step one is summarized, 83.6 parts by weight of Fe; 3.05 parts by weight of Ti; 4.8 parts by weight of V; 0.4 parts by weight of Mn; 1.2 parts by weight of Mo, 0.0025 parts by weight of B; 0.15 parts by weight of Si are added
  • the electric furnace melts for the rest of the manufacturing method, refer to Example 1, and the carburizing amount is 1.6 parts by weight.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)

Abstract

一种耐磨金属材料及其制造方法，耐磨金属材料包括80.13～85.4重量份的Fe；2.67～3.38重量份的Ti；3.54～5.93重量份的V；1～2重量份的C；0.1～0.5重量份的Mn；0.60～1.5重量份的Mo，0.0015～0.0050重量份的B；0.05～0.50重量份的Si；P≤0.02％，S≤0.02％。通过B与Mo元素的加入提高了材料的的淬透性，保证了材料淬火使内外特性转变的一致性，且加入了合适元素量的Ti元素，形成TiC相代替了部分的VC相，从而进一步提高了材料的硬度、耐磨性和韧性。

Description

一种耐磨金属材料及其制造方法 技术领域
本发明涉及钢铁材料加工技术领域，特别涉及一种耐磨金属材料及其制造方法。
背景技术
材料磨损是设备损耗的重要原因之一，而提高材料耐磨性的工艺之一即是进行渗碳，但是现有的材料渗碳时碳难以渗透深入，且由于材料厚度导致材料淬火时，内部降温速度不够，难以转化为硬度较大的马氏体，导致材料整体硬度和耐磨性不足。
此外，现有的耐磨钢通常是加入V、C形成VC相(HV2600)，从而提高材料的硬度和耐磨性能，但是对于某些特定领域其硬度和耐磨性还是不够，需要进一步改进。
发明内容
本发明的目的是克服现有技术的不足之外，本发明通过B与Mo元素的加入提高了材料的的淬透性，保证了材料淬火是内外特性转变的一致性，且加入了合适元素量的Ti元素，形成TiC相(HV3400)代替了部分的VC相(HV2600)，从而进一步提高了材料的硬度、耐磨性和韧性。
为实现上述目的，本发明采用的技术方案如下：
一种耐磨金属材料，包括80.13～85.4重量份的Fe；2.67～3.38重量份的Ti；3.54～5.93重量份的V；1～2重量份的C；0.1～0.5重量份的Mn；0.60～1.5重量份的Mo，0.0015～0.0050重量份的B；0.05～0.50重量份的Si；P≤0.02％，S≤0.02％。
进一步的改进，包括83.6重量份的Fe；3.05重量份的Ti；4.8重量份的V；1.6重量份的C；0.4重量份的Mn；1.2重量份的Mo，0.0025重量份的B；0.15重量份的Si；P≤0.02％，S≤0.02％。
一种的耐磨金属材料的制作方法，包括如下步骤：
步骤一、将80.13～85.4重量份的Fe，Fe中含有0.5～0.8重量份的C；2.67～3.38重量份的Ti；3.54～5.93重量份的V；0.1～0.5重量份的Mn；0.60～1.5重量份的Mo，0.0015～0.0050重量份的B；0.05～0.50重量份的Si加入电炉熔化，熔化温度为1600～1650℃；
步骤二、浇铸成形，浇铸完1～3h后，空冷得到铸件；
步骤三、将铸件加入渗碳炉，渗碳炉通入渗碳气体，外部碳势控制为1.1％，保持2.5～5小时；温度860～890℃保持3～5个小时；
步骤三、强渗：将渗碳炉升温至920℃，然后铸件在碳势1.25％的环境中保温2～3小时；至铸件中至C含量达到1～2重量份；
步骤四、扩散：将渗碳炉内的温度与碳势分别降至900℃与0.85％，保温2小时；
步骤五、将渗碳炉内的温度降至810～860℃，减小淬火产生的内应力和畸变，停止通入渗碳气体，然后并将炉温降至730～760℃,保温8～12min；
步骤六、将铸件取出浸入水中，并搅拌水，水与齿面对流换热，快速冷却到室温即制得耐磨金属材料。
进一步的改进，包括如下步骤：
所述步骤一中，将83.6重量份的Fe；3.05重量份的Ti；4.8重量份的V；0.4重量份的Mn；1.2重量份的Mo，0.0025重量份的B；0.15重量份的Si加入 电炉熔化。
进一步的改进，所述耐磨金属材料中的包括1.6重量份的C。
具体实施方式
实施例1
一种的耐磨金属材料的制作方法，包括如下步骤：
步骤一、将80.13重量份的Fe，Fe中含有0.5重量份的C；2.67重量份的Ti；3.54重量份的V；0.1重量份的Mn；0.60重量份的Mo，0.0015重量份的B；0.05重量份的Si加入电炉熔化，熔化温度为1600～1650℃；
步骤二、浇铸成形，浇铸完1h后，空冷得到铸件；
步骤三、将铸件加入渗碳炉，渗碳炉通入渗碳气体，外部碳势控制为1.1％，保持2.5小时；温度890℃保持3个小时；
步骤三、强渗：将渗碳炉升温至920℃，然后铸件在碳势1.25％的环境中保温2小时；至铸件中至C含量达到1重量份；
步骤四、扩散：将渗碳炉内的温度与碳势分别降至900℃与0.85％，保温2小时；
步骤五、将渗碳炉内的温度降至810℃，减小淬火产生的内应力和畸变，停止通入渗碳气体，然后并将炉温降至730℃,保温8～12min；
步骤六、将铸件取出浸入水中，并搅拌水，水与齿面对流换热，快速冷却到室温即制得耐磨金属材料。
实施例2
一种的耐磨金属材料的制作方法，包括如下步骤：
步骤一、将85.4重量份的Fe，Fe中含有0.8重量份的C；3.38重量份 的Ti；5.93重量份的V；0.5重量份的Mn；1.5重量份的Mo，0.0050重量份的B；0.50重量份的Si加入电炉熔化，熔化温度为1650℃；
步骤二、浇铸成形，浇铸完1～3h后，空冷得到铸件；
步骤三、将铸件加入渗碳炉，渗碳炉通入渗碳气体，外部碳势控制为1.1％，保持5小时；温度860℃保持3～5个小时；
步骤三、强渗：将渗碳炉升温至920℃，然后铸件在碳势1.25％的环境中保温3小时；至铸件中至C含量达到2重量份；
步骤四、扩散：将渗碳炉内的温度与碳势分别降至900℃与0.85％，保温2小时；
步骤五、将渗碳炉内的温度降至860℃，减小淬火产生的内应力和畸变，停止通入渗碳气体，然后并将炉温降至760℃,保温8～12min；
步骤六、将铸件取出浸入水中，并搅拌水，水与齿面对流换热，快速冷却到室温即制得耐磨金属材料。
实施例3
本实施例将步骤一汇总，83.6重量份的Fe；3.05重量份的Ti；4.8重量份的V；0.4重量份的Mn；1.2重量份的Mo，0.0025重量份的B；0.15重量份的Si加入电炉熔化。其余制造方法参照实施例一，渗碳量为1.6重量份。
上述实施例仅为最佳例举，而并非是对本发明的实施方式的限定。

Claims (5)

  1. 一种耐磨金属材料，其特征在于，包括80.13～85.4重量份的Fe；2.67～3.38重量份的Ti；3.54～5.93重量份的V；1～2重量份的C；0.1～0.5重量份的Mn；0.60～1.5重量份的Mo，0.0015～0.0050重量份的B；0.05～0.50重量份的Si；P≤0.02％，S≤0.02％。
  2. 如权利要求1所述的耐磨金属材料，其特征在于，包括83.6重量份的Fe；3.05重量份的Ti；4.8重量份的V；1.6重量份的C；0.4重量份的Mn；1.2重量份的Mo，0.0025重量份的B；0.15重量份的Si；P≤0.02％，S≤0.02％。
  3. 如权利要求1所述的耐磨金属材料的制作方法，其特征在于，包括如下步骤：
    步骤一、将80.13～85.4重量份的Fe，Fe中含有0.5～0.8重量份的C；2.67～3.38重量份的Ti；3.54～5.93重量份的V；0.1～0.5重量份的Mn；0.60～1.5重量份的Mo，0.0015～0.0050重量份的B；0.05～0.50重量份的Si加入电炉熔化，熔化温度为1600～1650℃；
    步骤二、浇铸成形，浇铸完1～3h后，空冷得到铸件；
    步骤三、将铸件加入渗碳炉，渗碳炉通入渗碳气体，外部碳势控制为1.1％，保持2.5～5小时；温度860～890℃保持3～5个小时；
    步骤三、强渗：将渗碳炉升温至920℃，然后铸件在碳势1.25％的环境中保温2～3小时；至铸件中至C含量达到1～2重量份；
    步骤四、扩散：将渗碳炉内的温度与碳势分别降至900℃与0.85％，保温2小时；
    步骤五、将渗碳炉内的温度降至810～860℃，减小淬火产生的内应力和畸变，停止通入渗碳气体，然后并将炉温降至730～760℃,保温8～12min；
    步骤六、将铸件取出浸入水中，并搅拌水，水与齿面对流换热，快速冷却到室温即制得耐磨金属材料。
  4. 如权利要求1所述的耐磨金属材料的制作方法，其特征在于，包括如下步骤：
    所述步骤一中，将83.6重量份的Fe；3.05重量份的Ti；4.8重量份的V；0.4重量份的Mn；1.2重量份的Mo，0.0025重量份的B；0.15重量份的Si加入电炉熔化。
  5. 如权利要求1所述的耐磨金属材料的制作方法，其特征在于，所述耐磨金属材料中的包括1.6重量份的C。
PCT/CN2019/117307 2019-11-12 2019-11-12 一种耐磨金属材料及其制造方法 WO2021092737A1 (zh)

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