WO2018192204A1 - 一种高频感应加热方法 - Google Patents

一种高频感应加热方法 Download PDF

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Publication number
WO2018192204A1
WO2018192204A1 PCT/CN2017/109046 CN2017109046W WO2018192204A1 WO 2018192204 A1 WO2018192204 A1 WO 2018192204A1 CN 2017109046 W CN2017109046 W CN 2017109046W WO 2018192204 A1 WO2018192204 A1 WO 2018192204A1
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Prior art keywords
mass
parts
high frequency
frequency induction
workpiece
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PCT/CN2017/109046
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English (en)
French (fr)
Inventor
仵希敏
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苏州宏创高频加热设备有限公司
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Publication of WO2018192204A1 publication Critical patent/WO2018192204A1/zh

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
    • H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
    • H01F1/047—Alloys characterised by their composition
    • H01F1/053—Alloys characterised by their composition containing rare earth metals
    • H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
    • H01F1/057—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
    • H01F1/0571—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes
    • H01F1/0575—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together
    • H01F1/0577—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together sintered
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/0253—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/0253—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
    • H01F41/026—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets protecting methods against environmental influences, e.g. oxygen, by surface treatment
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/02—Permanent magnets [PM]
    • H01F7/0231—Magnetic circuits with PM for power or force generation
    • H01F7/0242—Magnetic drives, magnetic coupling devices

Definitions

  • the invention relates to a high frequency induction heating method.
  • a rare earth magnet made of a rare earth element such as a lanthanoid element is called a permanent magnet and is used to drive a motor of a hybrid vehicle, an electric vehicle, or the like, and a motor included in the hard disk and the MRIs.
  • a permanent magnet As an index indicating the performance of the magnet of these rare earth magnets, for example, remanence (remaining magnetic flux density) and coercive force can be used.
  • remanence residual magnetic flux density
  • coercive force can be used.
  • the size of the motor decreases and the current density increases, the amount of heat generation increases, so that the demand for high heat resistance in the rare earth magnet used is further improved. Therefore, one of the important research topics in this technical field is how to maintain the magnetic properties of the magnet when used at high temperatures.
  • the technical solution of the present invention is to design a high frequency induction heating method, which comprises the following steps:
  • Step one mixing Nd2Fe14B powder into the workpiece and sintering
  • Step 2 coating the surface of the workpiece, the composition of the coating comprises 50 to 100 parts by mass of the graphite lubricating fluid, 50 to 53 parts by mass of titanium carbonitride, 10 to 12 parts by mass of silica, 4 to 6 parts by mass of cobalt oxide, 2 ⁇ 4 parts by mass of vanadium oxide and 2 to 4 parts by mass of zinc oxide;
  • step three the workpiece is placed in a high frequency induction heating device for heating.
  • An advantage and an advantageous effect of the present invention resides in a high frequency induction heating method capable of heating an entire area on a surface of a workpiece to a preset temperature during high frequency induction heating.
  • Step one mixing Nd2Fe14B powder into the workpiece and sintering
  • Step 2 coating the surface of the workpiece, the composition of the coating comprises 50 to 100 parts by mass of the graphite lubricating fluid, 50 to 53 parts by mass of titanium carbonitride, 10 to 12 parts by mass of silica, 4 to 6 parts by mass of cobalt oxide, 2 ⁇ 4 parts by mass of vanadium oxide, 2 to 4 parts by mass of oxidation Zinc
  • step three the workpiece is placed in a high frequency induction heating device for heating.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Environmental & Geological Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Powder Metallurgy (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

一种高频感应加热方法，包括如下步骤：步骤一，在工件中混入Nd2Fe14B粉末，并烧结；步骤二，在工件表面镀膜，镀膜的成分包括50~100质量份的石墨润滑液，50~53质量份碳氮化钛、10~12质量份二氧化硅、4~6质量份氧化钴、2~4质量份氧化钒、2~4质量份氧化锌；步骤三，将上述工件放入高频感应加热装置内加热。该方法能够在高频感应加热的过程中，将工件表面上的整个区域加热到预设温度。

Description

一种高频感应加热方法 技术领域
本发明涉及一种高频感应加热方法。
背景技术
由稀土元素，如镧系元素制成的稀土磁体被称作永磁体并用于驱动混合动力车辆、电动车等的电机以及包含在硬盘和MRIs中的电机。作为指示这些稀土磁体的磁体性能的指标，例如，可以使用剩磁(剩余磁通密度)和矫顽力。随电机尺寸降低和电流密度提高，发热量提高，因此在所用稀土磁体中对高耐热性的要求进一步提高。因此，这一技术领域中的重要研究课题之一是在高温下使用时如何保持磁体的磁特性。
发明内容
本发明的目的在于提供一种高频感应加热方法，能够在高频感应加热的过程中，将工件表面上的整个区域加热到预设温度。
为了实现上述目的，本发明的技术方案是设计一种高频感应加热方法，其特征在于包括如下步骤：
步骤一，在工件中混入Nd2Fe14B粉末，并烧结；
步骤二，在工件表面镀膜，镀膜的成分包括50～100质量份的石墨润滑液，50～53质量份碳氮化钛、10～12质量份二氧化硅、4～6质量份氧化钴、2～4质量份氧化钒、2～4质量份氧化锌；
步骤三，将上述工件放入高频感应加热装置内加热。
本发明的优点和有益效果在于：一种高频感应加热方法，能够在高频感应加热的过程中，将工件表面上的整个区域加热到预设温度。
具体实施方式
下面结合附图和实施例，对本发明的具体实施方式作进一步描述。以下实施例仅用于更加清楚地说明本发明的技术方案，而不能以此来限制本发明的保护范围。
实施例：
一种高频感应加热方法，其特征在于包括如下步骤：
步骤一，在工件中混入Nd2Fe14B粉末，并烧结；
步骤二，在工件表面镀膜，镀膜的成分包括50～100质量份的石墨润滑液，50～53质量份碳氮化钛、10～12质量份二氧化硅、4～6质量份氧化钴、2～4质量份氧化钒、2～4质量份氧化 锌；
步骤三，将上述工件放入高频感应加热装置内加热。
以上所述仅是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明技术原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。

Claims (1)

  1. 一种高频感应加热方法，其特征在于包括如下步骤：
    步骤一，在工件中混入Nd2Fe14B粉末，并烧结；
    步骤二，在工件表面镀膜，镀膜的成分包括50～100质量份的石墨润滑液，50～53质量份碳氮化钛、10～12质量份二氧化硅、4～6质量份氧化钴、2～4质量份氧化钒、2～4质量份氧化锌；
    步骤三，将上述工件放入高频感应加热装置内加热。
PCT/CN2017/109046 2017-04-18 2017-11-02 一种高频感应加热方法 WO2018192204A1 (zh)

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Publication number Priority date Publication date Assignee Title
CN107170544A (zh) * 2017-04-18 2017-09-15 苏州宏创高频加热设备有限公司 一种高频感应加热方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102560444A (zh) * 2012-02-17 2012-07-11 湖南航天工业总公司 烧结钕铁硼化学复合镀镍铜磷工艺
CN103611667A (zh) * 2013-11-28 2014-03-05 中国科学院金属研究所 钕铁硼磁体材料表面水性无机有机复合涂层双层防护方法
CN103894587A (zh) * 2014-03-20 2014-07-02 华南理工大学 一种钕铁硼永磁材料及制备方法与磁场辅助直接铸造装置
US20160099104A1 (en) * 2014-10-03 2016-04-07 Toyota Jidosha Kabushiki Kaisha Method for manufacturing rare-earth magnets
CN107170544A (zh) * 2017-04-18 2017-09-15 苏州宏创高频加热设备有限公司 一种高频感应加热方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102560444A (zh) * 2012-02-17 2012-07-11 湖南航天工业总公司 烧结钕铁硼化学复合镀镍铜磷工艺
CN103611667A (zh) * 2013-11-28 2014-03-05 中国科学院金属研究所 钕铁硼磁体材料表面水性无机有机复合涂层双层防护方法
CN103894587A (zh) * 2014-03-20 2014-07-02 华南理工大学 一种钕铁硼永磁材料及制备方法与磁场辅助直接铸造装置
US20160099104A1 (en) * 2014-10-03 2016-04-07 Toyota Jidosha Kabushiki Kaisha Method for manufacturing rare-earth magnets
CN107170544A (zh) * 2017-04-18 2017-09-15 苏州宏创高频加热设备有限公司 一种高频感应加热方法

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