WO2023236135A1 - Gcr15 material surface strengthening treatment process and equipment - Google Patents

Gcr15 material surface strengthening treatment process and equipment Download PDF

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Publication number
WO2023236135A1
WO2023236135A1 PCT/CN2022/097803 CN2022097803W WO2023236135A1 WO 2023236135 A1 WO2023236135 A1 WO 2023236135A1 CN 2022097803 W CN2022097803 W CN 2022097803W WO 2023236135 A1 WO2023236135 A1 WO 2023236135A1
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furnace
gcr15 material
pit
gcr15
strengthening treatment
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PCT/CN2022/097803
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French (fr)
Chinese (zh)
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王敬美
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台州市永宁轴承制造有限公司
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Priority to PCT/CN2022/097803 priority Critical patent/WO2023236135A1/en
Publication of WO2023236135A1 publication Critical patent/WO2023236135A1/en

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    • 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
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
    • C23C14/48—Ion implantation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D1/04—Casings; Linings; Walls; Roofs characterised by the form, e.g. shape of the bricks or blocks used
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D1/10—Monolithic linings; Supports therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D11/00—Arrangement of elements for electric heating in or on furnaces

Definitions

  • the invention belongs to the technical field of metal surface treatment, and relates to a Gcr15 material, and in particular to a strengthening treatment process and equipment for the surface of Gcr15 material parts.
  • High carbon chromium bearing steel GCr15 is a material with a carbon content of about 1% and a chromium content of about 1.5%. It is widely used in manufacturing various types of bearings because of its good wear resistance, fatigue resistance and dimensional stability. It is currently the world's The most produced bearing steel in the world.
  • the failure part of bearing parts made of GCr15 steel is often on the surface or subsurface layer, and the failure modes are mostly wear or fatigue spalling.
  • the surface layer presents a complex multi-layer structure state within a certain range. Its physical and chemical properties are different, which will inevitably have varying degrees of impact on its surface wear resistance. , and this is also an obstacle to improving bearing reliability and extending bearing life. Therefore, the most effective way to improve bearing performance is surface strengthening.
  • surface strengthening such as physical vapor deposition, chemical vapor deposition, ion implantation technology, etc.
  • ion implantation technology is the most suitable surface strengthening technology for precision bearings and is a good way to improve its service life and reliability. method.
  • the purpose of the present invention is to provide a treatment process and equipment that can effectively improve the wear resistance and fatigue resistance of the surface of GCcr15 bearing parts in view of the above-mentioned problems existing in the prior art.
  • a Gcr15 material surface strengthening treatment equipment which is composed of a pit furnace, a gas supply device and a cooling device. It is characterized in that the pit furnace consists of a control panel, a furnace shell, and a The top of the furnace shell is composed of a furnace cover. The interior of the furnace shell is provided with a furnace, a furnace pot and a grid-shaped material basket in sequence from the outside to the inside. The furnace is filled with a thermal insulation layer, and the inner wall of the thermal insulation layer is A heating element is installed, a motor is installed on the top of the furnace cover, and a fan blade driven by the motor to rotate is provided below the furnace cover at the mouth of the furnace pot.
  • thermocouples put into the furnace tank, ammonia gas pipes, nitrogen pipes and carbon dioxide pipes are also installed on the furnace cover.
  • the control panel controls the operation of the thermocouples, motors, heating elements and gas supply devices.
  • the cooling device consists of a cooling pit and a fan installed outside the cooling pit.
  • the fan is close to the cooling pit, and the fan mouth faces the cooling pit.
  • the pit is filled with nitrogen.
  • the thermal insulation layer is composed of asbestos and refractory bricks that are attached to each other.
  • the asbestos is attached to the inner wall of the furnace shell, and the refractory bricks are located between the asbestos and the furnace tank. between.
  • the heating element is located between the refractory bricks and the furnace pot.
  • a Gcr15 material surface strengthening treatment process which is characterized by including the following steps:
  • step d After completing step d, continue to heat the Gcr15 material. When the temperature rises to 480-500°C, ammonia and carbon dioxide are introduced.
  • step e After completing step e, continue to heat the Gcr15 material to 550-600°C and keep it warm for 4-6 hours;
  • step f After completing step f, continue to heat the Gcr15 material to 620-720°C and keep it warm for 3-5 hours;
  • step g After completing step g, pass nitrogen gas into the Gcr15 material and cool it to 120-150°C.
  • the flow rate of ammonia gas introduced in step e is 1-3m 3 /h, and the flow rate of carbon dioxide gas is 0.1-0.4m 3 /h.
  • the flow rate of nitrogen gas introduced in step h is 1-10m 3 /h.
  • this Gcr15 material surface strengthening treatment process and equipment have the following advantages:
  • thermocouple Placing the electric thermocouple in the furnace tank makes the temperature measured more accurate, thereby making the data received by the control panel more accurate, thereby improving the accuracy of the equipment's processing technology.
  • a fan and a grid-shaped material basket are added to the mouth of the furnace tank to make the temperature in the furnace tank more balanced.
  • the Gcr15 material loaded into the material basket is heated more evenly, and the surface color after treatment is consistent.
  • a thermal insulation layer composed of asbestos and refractory bricks that fit together is added to the furnace, which improves the thermal insulation effect without affecting heating.
  • the service life is greatly improved, 1.5-2 times longer than normal product life.
  • the depth of co-infiltration layer reaches 0.4-0.7mm.
  • Figure 1 is a schematic structural diagram of this Gcr15 material surface strengthening treatment equipment.
  • Figure 2 is the process curve of this Gcr15 material surface strengthening treatment equipment.
  • the present invention is a Gcr15 material surface strengthening treatment equipment produced in order to solve the technical problem.
  • the pit furnace 1 is composed of a gas device 2 and a cooling device 3.
  • the pit furnace 1 is composed of a control panel 4, a furnace shell 5, and a furnace cover 6 arranged on the top of the furnace shell 5.
  • the interior of the furnace shell 5 is provided with a furnace 7, a furnace in sequence from the outside to the inside.
  • the tank 8 and the grid-shaped basket 9 are filled with a thermal insulation layer 10 in the furnace 7.
  • a heating element 11 is installed on the inner wall of the thermal insulation layer 10.
  • a motor 13 is installed on the top of the furnace cover 6, and below the furnace cover 6 There is a fan blade 12 driven by the motor 13 to rotate at the position of the furnace pot 8.
  • a plurality of thermocouples 14 with ends extending into the furnace pot 8 are installed on the furnace cover 6.
  • the ammonia gas pipe 15 and the carbon dioxide pipe 17 are connected to the gas device 2, and the nitrogen pipe 16 is connected to the cooling device.
  • the control panel 4 controls the operation of the thermocouple 14, motor 13, heating element 11 and gas supply device 2.
  • the cooling device 3 in this Gcr15 material surface strengthening treatment equipment consists of a cooling pit 18 and a fan 19 arranged outside the cooling pit 18.
  • the fan 19 is close to the cooling pit 18, and the fan 19 mouth faces the cooling pit 18.
  • the cooling pit 18 is filled with nitrogen, and the fan 19 is added to improve the cooling and heat dissipation efficiency.
  • the thermal insulation layer 10 in this Gcr15 material surface strengthening treatment equipment is composed of asbestos 20 and refractory bricks 21 that are bonded to each other.
  • the asbestos 20 is bonded to the inner wall of the furnace shell 5 and the refractory bricks 21 Located between the asbestos 20 and the furnace pot 8 , the heating element 11 is located between the refractory bricks 21 and the furnace pot 8 .
  • the dried Gcr15 material is put into the basket 9 and hoisted into the furnace tank 8 of the well-type furnace 1.
  • the control panel 4 controls the start of the heating element 11 to heat to 250-300°C, and then stops the heating and heat preservation for 0.4-0.6h for pre-oxidation;
  • step d the control panel 4 continues to control and start the heating element 11 to continue to heat up the Gcr15 material.
  • the control panel controls the air supply device 2 to pass in ammonia with a flow rate of 1-3m 3 /h. Gas and carbon dioxide with a flow rate of 0.1-0.4m 3 /h.
  • step e the control panel 4 controls the heating element 11 to continue to raise the temperature to 550-600°C, and then stops heating and keeping it warm for 4-6 hours.
  • This step is mainly based on nitriding;
  • step f the control panel 4 controls and starts the heating element 11 again to continue to heat the Gcr15 material to 620-720°C, and then stops heating and keeping it warm for 3-5 hours to make the penetration of nitrogen and carbon more uniform;
  • control panel 4 controls the air supply device 2 to pass in nitrogen gas with a flow rate of 1-10m 3 /h and cool it to 120-150°C.

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

Abstract

The present invention relates to the technical field of material surface treatment, and provides a Gcr15 material surface strengthening treatment process and equipment. The present invention solves the problem that the anti-fatigue performance of surfaces of existing Gcr15 material parts is poor. The Gcr15 material surface strengthening treatment equipment is composed of a pit furnace, a gas supply device, and a cooling device; the pit furnace is composed of a control panel, a furnace housing, and a furnace cover arranged on the top of the furnace housing; a hearth, a furnace tank, and a material basket are arranged in the furnace housing; the hearth is filled with a heat preservation and insulation layer; a heating element is mounted on an inner wall of the heat preservation and insulation layer; a plurality of thermocouples of which end portions extend into the furnace tank are arranged on the furnace cover; and the furnace cover is provided with an ammonia pipe, a nitrogen pipe, and a dioxide carbon pipe. The Gcr15 material surface strengthening treatment process comprises: cleaning and drying a Gcr15 material by means of argon ion sputtering for 30 min, after drying, putting the Gcr15 material into the pit furnace to be heated to 250°C to 300°C, then continuing increasing temperature, and when the temperature is increased to 480°C to 500°C, introducing ammonia gas and carbon dioxide. The present invention can improve the wear resistance and the anti-fatigue strength of the surface of the Gcr15 material.

Description

一种Gcr15材料表面强化处理工艺及设备A Gcr15 material surface strengthening treatment process and equipment 技术领域Technical field
本发明属于金属表面处理技术领域，涉及一种Gcr15材料，特别涉及一种Gcr15材料零件表面的强化处理工艺及设备。The invention belongs to the technical field of metal surface treatment, and relates to a Gcr15 material, and in particular to a strengthening treatment process and equipment for the surface of Gcr15 material parts.
背景技术Background technique
轴承在工作时承受着极大的压力和摩擦力，要求轴承钢有高而均匀的硬度和耐磨性，以及高的弹性极限。高碳铬轴承钢GCr15是含碳为1％左右，含铬为1.5％左右的材料，因其良好的耐磨性、抗疲劳性能以及尺寸稳定性而广泛应用于制造各类轴承，目前是世界上生产量最大的轴承钢。Bearings are subjected to great pressure and friction when working, and the bearing steel is required to have high and uniform hardness and wear resistance, as well as a high elastic limit. High carbon chromium bearing steel GCr15 is a material with a carbon content of about 1% and a chromium content of about 1.5%. It is widely used in manufacturing various types of bearings because of its good wear resistance, fatigue resistance and dimensional stability. It is currently the world's The most produced bearing steel in the world.
GCr15钢所制造的轴承零件失效部位往往是表面或次表层，失效形式以磨损或疲劳剥落居多。应用现代表面分析技术研究轴承工作表面的微观结构，可以发现其表面层一定范围之内呈现复杂的多层结构状态，其物理化学性能各不相同，必然对其表面耐摩损性能产生不同程度的影响，而这也是提高轴承可靠性，延长轴承寿命的一道障碍，所以改善轴承的工作性能，最有效的方式是表面强化。表面强化的方法有很多种，如物理气相沉积，化学气相沉积，离子注入技术等，其中离子注入技术是最适合精密轴承的一种表面强化技术，是提高其使用寿命和可靠性的一种好方法。The failure part of bearing parts made of GCr15 steel is often on the surface or subsurface layer, and the failure modes are mostly wear or fatigue spalling. Applying modern surface analysis technology to study the microstructure of the bearing working surface, it can be found that the surface layer presents a complex multi-layer structure state within a certain range. Its physical and chemical properties are different, which will inevitably have varying degrees of impact on its surface wear resistance. , and this is also an obstacle to improving bearing reliability and extending bearing life. Therefore, the most effective way to improve bearing performance is surface strengthening. There are many methods of surface strengthening, such as physical vapor deposition, chemical vapor deposition, ion implantation technology, etc. Among them, ion implantation technology is the most suitable surface strengthening technology for precision bearings and is a good way to improve its service life and reliability. method.
由于对工艺流程参数的不了解，以及受现有工艺处理设备的技术限制，国内针对轴承钢离子注入方面的研究仅限于试样表面的注入工艺研究，而对表面曲率大，形状特殊的GCr15轴承钢的表面离子注入工艺没有实际的应用。Due to the lack of understanding of process parameters and the technical limitations of existing process equipment, domestic research on ion implantation of bearing steel is limited to research on the injection process on the surface of the sample, while GCr15 bearings with large surface curvature and special shapes are The surface ion implantation process of steel has no practical application.
发明内容Contents of the invention
本发明的目的是针对现有技术中存在的上述问题，提供了一种能有效提高GCcr15轴承零件表面的耐磨性和抗疲劳强度的处理工艺及设备。The purpose of the present invention is to provide a treatment process and equipment that can effectively improve the wear resistance and fatigue resistance of the surface of GCcr15 bearing parts in view of the above-mentioned problems existing in the prior art.
本发明的目的可通过下列技术方案来实现：一种Gcr15材料表面强化处理设备，由井式炉、供气装置和冷却装置组成，其特征在于，该井式炉由控制面板、炉壳、设置在炉壳顶部的炉盖组成，所述的炉壳内部由外至内依次设置有炉膛、炉罐以及网格状的料筐，所述的炉膛内填充有保温隔热层，保温隔热层内壁安装有加热元件，所述炉盖的顶部安装有电机，且炉盖下方处位于炉罐口的位置处设置有由电机带动旋转的风叶，所述的炉盖上安装有若干个端部伸入炉罐内的热电偶，所述的炉盖上还安装有氨气管、氮气管和二氧化碳管，所述的控制面板控制热电偶、电机、加热元件和供气装置工作。The object of the present invention can be achieved through the following technical solutions: a Gcr15 material surface strengthening treatment equipment, which is composed of a pit furnace, a gas supply device and a cooling device. It is characterized in that the pit furnace consists of a control panel, a furnace shell, and a The top of the furnace shell is composed of a furnace cover. The interior of the furnace shell is provided with a furnace, a furnace pot and a grid-shaped material basket in sequence from the outside to the inside. The furnace is filled with a thermal insulation layer, and the inner wall of the thermal insulation layer is A heating element is installed, a motor is installed on the top of the furnace cover, and a fan blade driven by the motor to rotate is provided below the furnace cover at the mouth of the furnace pot. Several end extensions are installed on the furnace cover. For the thermocouples put into the furnace tank, ammonia gas pipes, nitrogen pipes and carbon dioxide pipes are also installed on the furnace cover. The control panel controls the operation of the thermocouples, motors, heating elements and gas supply devices.
在上述的一种Gcr15材料表面强化处理设备中，所述的冷却装置由冷却坑和设置于冷却坑外部的风机组成，所述的风机靠近冷却坑，且风机口朝向冷却坑，所述的冷却坑内灌装有氮气。In the above-mentioned Gcr15 material surface strengthening treatment equipment, the cooling device consists of a cooling pit and a fan installed outside the cooling pit. The fan is close to the cooling pit, and the fan mouth faces the cooling pit. The pit is filled with nitrogen.
在上述的一种Gcr15材料表面强化处理设备中，所述的保温隔热层由相互贴合的石棉和耐火砖组成，所述的石棉贴合于炉壳内壁上，耐火砖位于石棉与炉罐之间。In the above-mentioned Gcr15 material surface strengthening treatment equipment, the thermal insulation layer is composed of asbestos and refractory bricks that are attached to each other. The asbestos is attached to the inner wall of the furnace shell, and the refractory bricks are located between the asbestos and the furnace tank. between.
在上述的一种Gcr15材料表面强化处理设备中，所述的加热元件位于耐火砖与炉罐之间。In the above-mentioned Gcr15 material surface strengthening treatment equipment, the heating element is located between the refractory bricks and the furnace pot.
一种Gcr15材料表面强化处理工艺，其特征在于包括以下步骤：A Gcr15 material surface strengthening treatment process, which is characterized by including the following steps:
a、在井式炉的控制面板上设定好工艺流程和工艺参数；a. Set the process flow and process parameters on the control panel of the pit furnace;
b、对Gcr15材料用氩离子溅射30min进行清洗，除去表面油污和杂质；b. Clean the Gcr15 material with argon ion sputtering for 30 minutes to remove surface oil and impurities;
c、清洗后的Gcr15材料进行烘干，除去表面的残留液；c. Dry the cleaned Gcr15 material to remove the residual liquid on the surface;
d、烘干后的Gcr15材料放入井式炉内加热至250-300℃，保温0.4-0.6h；d. Place the dried Gcr15 material into a pit furnace, heat to 250-300°C, and keep warm for 0.4-0.6h;
e、完成步骤d后，将Gcr15材料继续升温，当温度升至480-500℃时通入氨气和二氧化碳。e. After completing step d, continue to heat the Gcr15 material. When the temperature rises to 480-500°C, ammonia and carbon dioxide are introduced.
f、完成步骤e后，将Gcr15材料继续升温到550-600℃，保温4-6h；f. After completing step e, continue to heat the Gcr15 material to 550-600°C and keep it warm for 4-6 hours;
g、完成步骤f后，将Gcr15材料继续升温到620-720℃，保温3-5h；g. After completing step f, continue to heat the Gcr15 material to 620-720°C and keep it warm for 3-5 hours;
h、完成步骤g后将Gcr15材料通入氮气冷却至120-150℃。h. After completing step g, pass nitrogen gas into the Gcr15 material and cool it to 120-150°C.
在上述的一种Gcr15材料表面强化处理工艺中，所述的步骤e中通入氨气的流量为1-3m 3/h，通入二氧化碳的流量为0.1-0.4m 3/h。 In the above-mentioned Gcr15 material surface strengthening treatment process, the flow rate of ammonia gas introduced in step e is 1-3m 3 /h, and the flow rate of carbon dioxide gas is 0.1-0.4m 3 /h.
在上述的一种Gcr15材料表面强化处理工艺中，所述的步骤h中通入氮气流量为1-10m 3/h。 In the above-mentioned Gcr15 material surface strengthening treatment process, the flow rate of nitrogen gas introduced in step h is 1-10m 3 /h.
与现有技术相比，本Gcr15材料表面强化处理工艺及设备具有以下优点：Compared with existing technology, this Gcr15 material surface strengthening treatment process and equipment have the following advantages:
1、将电热偶设置在炉罐内使得其测得的温度更加准确，从而使控制面板收到的数据更加精确，进而提高了该设备处理工艺的精确性。1. Placing the electric thermocouple in the furnace tank makes the temperature measured more accurate, thereby making the data received by the control panel more accurate, thereby improving the accuracy of the equipment's processing technology.
2、在炉罐口增设了风扇和网格状的料筐，使得炉罐内的温度更加均衡，装入料筐内的Gcr15材料受热更加均匀，被处理后的表面颜色一致。2. A fan and a grid-shaped material basket are added to the mouth of the furnace tank to make the temperature in the furnace tank more balanced. The Gcr15 material loaded into the material basket is heated more evenly, and the surface color after treatment is consistent.
3、在炉膛内增设了由相互贴合的石棉和耐火砖组成的保温隔热层，在不影响加热的同时也提高了保温效果。3. A thermal insulation layer composed of asbestos and refractory bricks that fit together is added to the furnace, which improves the thermal insulation effect without affecting heating.
4、表面硬度大幅度提高，可达HRC65-67以上。4. The surface hardness is greatly improved, reaching above HRC65-67.
5、使用寿命大幅度提高，比正常产品寿命高1.5-2倍。5. The service life is greatly improved, 1.5-2 times longer than normal product life.
6、共渗层深度达0.4-0.7mm。6. The depth of co-infiltration layer reaches 0.4-0.7mm.
附图说明Description of the drawings
图1是本Gcr15材料表面强化处理设备的结构示意图。Figure 1 is a schematic structural diagram of this Gcr15 material surface strengthening treatment equipment.
图2是本Gcr15材料表面强化处理设备的工艺曲线图。Figure 2 is the process curve of this Gcr15 material surface strengthening treatment equipment.
图中，1、井式炉；2、供气装置；3、冷却装置；4、控制面板；5、炉壳；6、炉盖；7、炉膛；8、炉罐；9、料筐；10、保温隔热层；11、加热元件；12、风叶；13、电机；14、热电偶；15、氨气管；16、氮气管；17、二氧化碳管；18、冷却坑；19、风机；20、石棉；21、耐火砖。In the picture, 1. Pit-type furnace; 2. Gas supply device; 3. Cooling device; 4. Control panel; 5. Furnace shell; 6. Furnace cover; 7. Furnace; 8. Furnace tank; 9. Material basket; 10 , Thermal insulation layer; 11. Heating element; 12. Fan blade; 13. Motor; 14. Thermocouple; 15. Ammonia gas pipe; 16. Nitrogen gas pipe; 17. Carbon dioxide pipe; 18. Cooling pit; 19. Fan; 20 , asbestos; 21. Refractory bricks.
具体实施方式Detailed ways
以下是本发明的具体实施例并结合附图，对本发明的技术方案作进一步的描述，但本发明并不限于这些实施例。The following are specific embodiments of the present invention combined with the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
为了方便叙述，首先，就Gcr15材料表面强化处理设备而言，如图1所示，本发明为了解决所述技术问题而制作的一种Gcr15材料表面强化处理的设备，具体由井式炉1、供气装置2和冷却装置3组成，该井式炉1由控制面板4、炉壳5、设置在炉壳5顶部的炉盖6组成，炉壳5内部由外至内依次设置有炉膛7、炉罐8以及网格状的料筐9，炉膛7内填充有保温隔热层10，保温隔热层10内壁安装有加热元件11，炉盖6的顶部安装有电机13，且炉盖6下方处位于炉罐8口的位置处设置有由电机13带动旋转的风叶12，炉盖6上安装有若干个端部伸入炉罐8内的热电偶14，炉盖6上还安装有与供气装置2相连的氨气管15和二氧化碳管17，以及与冷却装置相连的氮气管16，控制面板4控制热电偶14、电机13、加热元件11和供气装置2工作。For the convenience of description, first of all, as far as the Gcr15 material surface strengthening treatment equipment is concerned, as shown in Figure 1, the present invention is a Gcr15 material surface strengthening treatment equipment produced in order to solve the technical problem. Specifically, it is provided by a pit furnace 1, The pit furnace 1 is composed of a gas device 2 and a cooling device 3. The pit furnace 1 is composed of a control panel 4, a furnace shell 5, and a furnace cover 6 arranged on the top of the furnace shell 5. The interior of the furnace shell 5 is provided with a furnace 7, a furnace in sequence from the outside to the inside. The tank 8 and the grid-shaped basket 9 are filled with a thermal insulation layer 10 in the furnace 7. A heating element 11 is installed on the inner wall of the thermal insulation layer 10. A motor 13 is installed on the top of the furnace cover 6, and below the furnace cover 6 There is a fan blade 12 driven by the motor 13 to rotate at the position of the furnace pot 8. A plurality of thermocouples 14 with ends extending into the furnace pot 8 are installed on the furnace cover 6. The ammonia gas pipe 15 and the carbon dioxide pipe 17 are connected to the gas device 2, and the nitrogen pipe 16 is connected to the cooling device. The control panel 4 controls the operation of the thermocouple 14, motor 13, heating element 11 and gas supply device 2.
进一步细说，本Gcr15材料表面强化处理设备中的冷却装置3由冷却坑18和设置于冷却坑18外部的风机19组成，风机19靠近冷却坑18，且风机19口朝向冷却坑18，冷却坑18内灌装有氮气，增加风机19是为了提高冷却散热效率。To elaborate further, the cooling device 3 in this Gcr15 material surface strengthening treatment equipment consists of a cooling pit 18 and a fan 19 arranged outside the cooling pit 18. The fan 19 is close to the cooling pit 18, and the fan 19 mouth faces the cooling pit 18. The cooling pit 18 is filled with nitrogen, and the fan 19 is added to improve the cooling and heat dissipation efficiency.
进一步细说，为了保温效果更好，本Gcr15材料表面强化处理设备中的保温隔热层10由相互贴合的石棉20和耐火砖21组成，石棉20贴合于炉壳5内壁，耐火砖21位于石棉20与炉罐8之间，加热元件11位于耐火砖21与炉罐8之间。To elaborate further, in order to achieve better thermal insulation effect, the thermal insulation layer 10 in this Gcr15 material surface strengthening treatment equipment is composed of asbestos 20 and refractory bricks 21 that are bonded to each other. The asbestos 20 is bonded to the inner wall of the furnace shell 5 and the refractory bricks 21 Located between the asbestos 20 and the furnace pot 8 , the heating element 11 is located between the refractory bricks 21 and the furnace pot 8 .
而就一种Gcr15材料表面强化处理工艺而言，具体如图2所示，本发明所指的工艺步骤是：As for a Gcr15 material surface strengthening treatment process, as shown in Figure 2, the process steps referred to in the present invention are:
a、在井式炉1的控制面板4上设定好工艺流程和工艺参数；a. Set the process flow and process parameters on the control panel 4 of the pit furnace 1;
b、对Gcr15材料用氩离子溅射30min进行清洗，除去表面油污和杂质；b. Clean the Gcr15 material with argon ion sputtering for 30 minutes to remove surface oil and impurities;
c、清洗后的Gcr15材料进行烘干，除去表面的残留液；c. Dry the cleaned Gcr15 material to remove the residual liquid on the surface;
d、烘干后的Gcr15材料放入料筐9吊入井式炉1的炉罐8内，控制面板4控制启动加热元件11加热至250-300℃，然后停止加热保温0.4-0.6h预氧化；d. The dried Gcr15 material is put into the basket 9 and hoisted into the furnace tank 8 of the well-type furnace 1. The control panel 4 controls the start of the heating element 11 to heat to 250-300°C, and then stops the heating and heat preservation for 0.4-0.6h for pre-oxidation;
e、完成步骤d后，控制面板4继续控制启动加热元件11将Gcr15材料继续升温，当温度升至480-500℃时制面板控制供气装置2通入流量为1-3m 3/h的氨气和流量为0.1-0.4m 3/h的二氧化碳。 e. After completing step d, the control panel 4 continues to control and start the heating element 11 to continue to heat up the Gcr15 material. When the temperature rises to 480-500°C, the control panel controls the air supply device 2 to pass in ammonia with a flow rate of 1-3m 3 /h. Gas and carbon dioxide with a flow rate of 0.1-0.4m 3 /h.
f、完成步骤e后，控制面板4控制加热元件11将温度继续继续升温到550-600℃，然后停止加热保温4-6h，该步骤主要以渗氮为主；f. After completing step e, the control panel 4 controls the heating element 11 to continue to raise the temperature to 550-600°C, and then stops heating and keeping it warm for 4-6 hours. This step is mainly based on nitriding;
g、完成步骤f后，控制面板4再次控制启动加热元件11将Gcr15材料继续升温到620-720℃，然后停止加热保温3-5h，使氮和碳的渗入量更加均匀；g. After completing step f, the control panel 4 controls and starts the heating element 11 again to continue to heat the Gcr15 material to 620-720°C, and then stops heating and keeping it warm for 3-5 hours to make the penetration of nitrogen and carbon more uniform;
h、完成步骤g后控制面板4控制供气装置2通入流量为1-10m 3/h的氮气冷却至120-150℃。 h. After completing step g, the control panel 4 controls the air supply device 2 to pass in nitrogen gas with a flow rate of 1-10m 3 /h and cool it to 120-150°C.
本文中所描述的具体实施例仅仅是对本发明精神作举例说明。本发明所属技术领域的技术人员可以对所描述的具体实施例做各种各样的修改或补充或采用类似的方式替代，但并不会偏离本发明的精神或者超越所附权利要求书所定义的范围。The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which the present invention belongs can make various modifications or additions to the described specific embodiments or substitute them in similar ways, but this will not deviate from the spirit of the present invention or exceed the definition of the appended claims. range.

Claims (2)

  1. 一种Gcr15材料表面强化处理工艺，其特征在于包括以下步骤：A Gcr15 material surface strengthening treatment process, which is characterized by including the following steps:
    a、在井式炉(1)的控制面板(4)上设定好工艺流程和工艺参数；a. Set the process flow and process parameters on the control panel (4) of the pit furnace (1);
    b、对Gcr15材料用氩离子溅射30min进行清洗，除去表面油污和杂质；b. Clean the Gcr15 material with argon ion sputtering for 30 minutes to remove surface oil and impurities;
    c、清洗后的Gcr15材料进行烘干，除去表面的残留液；c. Dry the cleaned Gcr15 material to remove the residual liquid on the surface;
    d、烘干后的Gcr15材料放入井式炉(1)内加热至250-300℃，保温0.4-0.6h；d. Place the dried Gcr15 material into the pit furnace (1), heat it to 250-300°C, and keep it warm for 0.4-0.6 hours;
    e、完成步骤d后，将Gcr15材料继续升温，当温度升至480-500℃时通入氨气和二氧化碳，通入氨气的流量为1-3m 3/h，通入二氧化碳的流量为0.1-0.4m 3/h； e. After completing step d, continue to heat the Gcr15 material. When the temperature rises to 480-500°C, ammonia and carbon dioxide are introduced. The flow rate of ammonia is 1-3m 3 /h, and the flow rate of carbon dioxide is 0.1 -0.4m 3 /h;
    f、完成步骤e后，将Gcr15材料继续升温到550-600℃，保温4-6h；f. After completing step e, continue to heat the Gcr15 material to 550-600°C and keep it warm for 4-6 hours;
    g、完成步骤f后，将Gcr15材料继续升温到620-720℃，保温3-5h；g. After completing step f, continue to heat the Gcr15 material to 620-720°C and keep it warm for 3-5 hours;
    h、完成步骤g后将Gcr15材料通入氮气冷却至120-150℃；h. After completing step g, pass nitrogen into the Gcr15 material and cool it to 120-150°C;
    所述步骤a-h中使用的处理设备由井式炉(1)、供气装置(2)和冷却装置(3)组成，其特征在于，该井式炉(1)由控制面板(4)、炉壳(5)、设置在炉壳(5)顶部的炉盖(6)组成，所述的炉壳(5)内部由外至内依次设置有炉膛(7)、炉罐(8)以及网格状的料筐(9)，所述的炉膛(7)内填充有保温隔热层(10)，保温隔热层(10)内壁安装有加热元件(11)，所述炉盖(6)的顶部安装有电机(13)，且炉盖(6)下方处位于炉罐(8)口的位置处设置有由电机(13)带动旋转的风叶(12)，所述的炉盖(6)上安装有若干个端部伸入炉罐(8)内的热电偶(14)，所述的炉盖(6)上还安装有氨气管(15)、氮气管(16)和二氧化碳管(17)，所述的控制面板(4)控制热电偶(14)、电机(13)、加热元件(11)和供气装置(2)工作；所述的冷却装置(3)由冷却坑(18)和设置于冷却坑(18)外部的风机(19)组成，所述的风机(19)靠近冷却坑(18)，且风机(19)口朝向冷却坑(18)，所述的冷却坑(18)内灌装有氮气；所述的保温隔热层(10)由相互贴合的石棉(20)和耐火砖(21)组成，所述的石棉(20)贴合于炉壳(5)内壁上，耐火砖(21)位于石棉(20)与炉罐(8)之间；所述的加热元件(11)位于耐火砖(21)与炉罐(8)之间。The processing equipment used in steps a-h consists of a pit furnace (1), a gas supply device (2) and a cooling device (3). It is characterized in that the pit furnace (1) consists of a control panel (4), a furnace shell (5), it consists of a furnace cover (6) arranged on the top of the furnace shell (5). The furnace shell (5) is provided with a furnace (7), a furnace tank (8) and a grid in order from the outside to the inside. The material basket (9) is filled with a thermal insulation layer (10) in the furnace (7). A heating element (11) is installed on the inner wall of the thermal insulation layer (10). The top of the furnace cover (6) A motor (13) is installed, and a fan blade (12) driven by the motor (13) to rotate is provided below the furnace cover (6) at the mouth of the furnace tank (8). Several thermocouples (14) are installed with their ends extending into the furnace tank (8). The furnace cover (6) is also equipped with an ammonia gas pipe (15), a nitrogen pipe (16) and a carbon dioxide pipe (17). , the control panel (4) controls the operation of the thermocouple (14), motor (13), heating element (11) and air supply device (2); the cooling device (3) consists of a cooling pit (18) and It consists of a fan (19) installed outside the cooling pit (18). The fan (19) is close to the cooling pit (18), and the mouth of the fan (19) faces the cooling pit (18). The cooling pit (18) Nitrogen is filled inside; the thermal insulation layer (10) is composed of asbestos (20) and refractory bricks (21) that are attached to each other, and the asbestos (20) is attached to the inner wall of the furnace shell (5) , the refractory brick (21) is located between the asbestos (20) and the furnace pot (8); the heating element (11) is located between the refractory brick (21) and the furnace pot (8).
  2. 根据权利要求1所述的一种Gcr15材料表面强化处理工艺，所述的步骤h中通入氮气流量为1-10m 3/h。 A Gcr15 material surface strengthening treatment process according to claim 1, wherein the nitrogen gas flow rate in step h is 1-10m 3 /h.
PCT/CN2022/097803 2022-06-09 2022-06-09 Gcr15 material surface strengthening treatment process and equipment WO2023236135A1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204174264U (en) * 2014-11-20 2015-02-25 哈尔滨广瀚燃气轮机有限公司 Hollow turbine blade of combustion gas turbine oozes Co-Al furnace apparatus
CA2845422A1 (en) * 2014-03-05 2015-09-05 Ghulam Nabi Integrating coke oven blast furnace operation for direct steelmaking and elimination of slag production
CN107740062A (en) * 2017-10-23 2018-02-27 进发轴承有限公司 A kind of high-carbon-chromium bearing steel surface Hardening Treatment equipment
CN107806763A (en) * 2017-10-19 2018-03-16 台州市永宁轴承制造有限公司 A kind of Gcr15 material surface strengthenings handling process and equipment

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2845422A1 (en) * 2014-03-05 2015-09-05 Ghulam Nabi Integrating coke oven blast furnace operation for direct steelmaking and elimination of slag production
CN204174264U (en) * 2014-11-20 2015-02-25 哈尔滨广瀚燃气轮机有限公司 Hollow turbine blade of combustion gas turbine oozes Co-Al furnace apparatus
CN107806763A (en) * 2017-10-19 2018-03-16 台州市永宁轴承制造有限公司 A kind of Gcr15 material surface strengthenings handling process and equipment
CN107740062A (en) * 2017-10-23 2018-02-27 进发轴承有限公司 A kind of high-carbon-chromium bearing steel surface Hardening Treatment equipment

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