CN109133897A - 一种uu80磁芯生产方法 - Google Patents

一种uu80磁芯生产方法 Download PDF

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CN109133897A
CN109133897A CN201811031231.3A CN201811031231A CN109133897A CN 109133897 A CN109133897 A CN 109133897A CN 201811031231 A CN201811031231 A CN 201811031231A CN 109133897 A CN109133897 A CN 109133897A
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product
sintering
production method
mould
minutes
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郑娇
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Jingshi Magnetic Materials & Element Engineering Tech Research Co Ltd
Wuxi Spinel Magnetics Co Ltd
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Jingshi Magnetic Materials & Element Engineering Tech Research Co Ltd
Wuxi Spinel Magnetics Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/26—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on ferrites
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
    • B24B19/22—Single-purpose machines or devices for particular grinding operations not covered by any other main group characterised by a special design with respect to properties of the material of non-metallic articles to be ground
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/38—Treating surfaces of moulds, cores, or mandrels to prevent sticking
    • B28B7/382—Devices for treating, e.g. sanding
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/64—Burning or sintering processes
    • 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
    • H01F41/0206—Manufacturing of magnetic cores by mechanical means
    • H01F41/0246—Manufacturing of magnetic circuits by moulding or by pressing powder

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Soft Magnetic Materials (AREA)
  • Powder Metallurgy (AREA)

Abstract

本发明公开了一种UU80磁芯生产方法，1)制粉工序：原材料中铁红硅含量＜100ppm；不加二氧化硅和五氧化二钒；砂磨时间为90分钟；加胶比率为0.7wt.％/批；磁化度<3m2/kg；Cl‑<350ppm；2)成型工序：对模具进行涂层处理，在模具上模和下模各涂上一层CrAlTiN，增加模具的光洁度，减少成型后的粘模；3)烧结工序：采用专门的工艺曲线，最高烧结温度为1320℃，排胶时间为450分钟，确保烧结的产品无裂纹，减少结晶；4)研磨工序：采用圆盘磨磨床，直接磨加工到产品标准尺寸，确保磨加工后产品的平整度，减少缺角和掉块。本发明生产中从制粉一直到研磨工序，通过对每道工序生产方法的改进，减少烧结后产品结晶和粘模等不良，满足客户提出的品质要求。

Description

一种UU80磁芯生产方法
技术领域
本发明涉及锰锌软磁铁氧体磁心生产领域，特别涉及一种UU80磁芯生产方法。
背景技术
UU80磁芯，是一种应用于大功率控制电机(变压器)的铁氧体，绿色节能，低碳环保，主要供应国际市场，需求量很大。该产品具体生产流程如图1所示：确定原材料配比→预烧→黑振→过程检测→加入添加剂→砂磨→过程检测→喷雾造粒→过程检测→压制成型→脱脂烧结→磨加工→成品检验→包装。
UU80磁芯，产品在生产过程中，其难度较大，主要是客户对它的外观和结晶要求较高，对成品的结晶和粘模要求非常严格，产品的结晶和粘模是影响产品品质的重要因素。磁芯外观要求光滑、清洁、无粘膜、无水锈、无裂纹、无深度划痕，两个磁芯拼成一付后，每个外暴露面结晶只允许4个。外露面结晶出现1个结晶时，直径不能超过4mm。外露面结晶出现2个结晶时，直径不能超过3mm。外露面结晶出现3个结晶时，直径不能超过2mm。外露面结晶出现4个结晶时，直径不能超过1mm。结晶不能出现在接口处，结晶上不能有针孔。
发明内容
为解决现有技术和实际情况中存在的上述问题，本发明提供了一种UU80磁芯生产方法，生产流程为：确定原材料配比→预烧→黑振→过程检测→加入添加剂→砂磨→过程检测→喷雾造粒→过程检测→压制成型→脱脂烧结→磨加工→成品检验→包装，
1)制粉工序：原材料中铁红硅含量＜100ppm；不加二氧化硅和五氧化二钒；砂磨时间为90分钟；加胶比率为0.7wt.％/批；磁化度&lt;3m2/kg；Cl-&lt;350ppm；
2)成型工序：对模具进行涂层处理，在模具上模和下模各涂上一层CrAlTiN，增加模具的光洁度，减少成型后的粘模；
3)烧结工序：采用专门的工艺曲线，最高烧结温度为1320℃，排胶时间为450分钟，确保烧结的产品无裂纹，减少结晶；
4)研磨工序：采用圆盘磨磨床，直接磨加工到产品标准尺寸，确保磨加工后产品的平整度，减少缺角和掉块。
优选地，所述烧结工序中，进窑口加装轴流风机，吹干净坯件表面粉尘。
本发明UU80磁芯生产方法采用专门的粉料，成型模具进行适当涂层处理，烧结时采用专门的烧结工艺曲线，降低烧结温度，延长排胶曲线，减少烧结后产品的结晶和粘模不良。磨加工采用圆盘磨床，确保磨加工后产品的平整度。
附图说明
图1是UU80磁芯的生产流程图。
具体实施方式
本发明公开了一种UU80磁芯生产方法，生产流程为：确定原材料配比→预烧→黑振→过程检测→加入添加剂→砂磨→过程检测→喷雾造粒→过程检测→压制成型→脱脂烧结→磨加工→成品检验→包装，本发明做了如下改进：
1、制粉工序：原材料中铁红硅含量＜100ppm；不加二氧化硅和五氧化二钒；砂磨时间减少30分钟(砂磨90分钟)；加胶比率为0.7wt.％/批；磁化度&lt;3m2/kg；Cl-&lt;350ppm；
2、成型工序：对模具进行涂层处理，在模具上模和下模各涂上一层CrAlTiN，增加模具的光洁度，减少成型后的粘模。
3、烧结工序：采用专门的工艺曲线，最高烧结温度降低30℃(烧结温度为1320℃)，排胶区时间延长90分钟(排胶时间为450分钟)，确保烧结的产品无裂纹，减少结晶。
4、研磨工序：采用圆盘磨磨床，直接磨加工到产品标准尺寸，确保磨加工后产品的平整度，减少缺角和掉块。
现有技术和本发明磁芯生产过程对比如表1所示：
表1 现有技术和本发明磁芯生产过程对比
申请人结合实际的工作经验，精心设计和试验，总结出该生产方法，该生产方法用于UU80磁芯(或者称为UU型大磁心)，生产中从制粉一直到研磨工序，通过对每道工序生产方法的改进，减少烧结后产品结晶和粘模等不良，满足客户提出的品质要求。
以上所述仅为本发明的优选实施例而已，并不用于限制本发明，尽管参照前述实施例对本发明进行了详细的说明，对于本领域的技术人员来说，其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (2)

1.一种UU80磁芯生产方法，生产流程为：确定原材料配比→预烧→黑振→过程检测→加入添加剂→砂磨→过程检测→喷雾造粒→过程检测→压制成型→脱脂烧结→磨加工→成品检验→包装，其特征在于：
1)制粉工序：原材料中铁红硅含量＜100ppm；不加二氧化硅和五氧化二钒；砂磨时间为90分钟；加胶比率为0.7wt.％/批；磁化度&lt;3m2/kg；Cl-&lt;350ppm；
2)成型工序：对模具进行涂层处理，在模具上模和下模各涂上一层CrAlTiN，增加模具的光洁度，减少成型后的粘模；
3)烧结工序：采用专门的工艺曲线，最高烧结温度为1320℃，排胶时间为450分钟，确保烧结的产品无裂纹，减少结晶；
4)研磨工序：采用圆盘磨磨床，直接磨加工到产品标准尺寸，确保磨加工后产品的平整度，减少缺角和掉块。
2.根据权利要求1所述的UU80磁芯生产方法，其特征在于：所述烧结工序中，进窑口加装轴流风机，吹干净坯件表面粉尘。
CN201811031231.3A 2018-09-05 2018-09-05 一种uu80磁芯生产方法 Pending CN109133897A (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110620005A (zh) * 2019-08-05 2019-12-27 无锡斯贝尔磁性材料有限公司 一种裸线直绕磁芯的生产方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3438621B2 (ja) * 1998-11-17 2003-08-18 エフ・ディ−・ケイ株式会社 高透磁率酸化物磁性材料の製造方法
CN102360678A (zh) * 2011-06-27 2012-02-22 海安县鹰球粉末冶金有限公司 一种软磁铁氧体热敏磁芯及其制造方法
CN204820499U (zh) * 2015-07-28 2015-12-02 东莞市汇成真空科技有限公司 一种用于工模具的多层复合硬质膜

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3438621B2 (ja) * 1998-11-17 2003-08-18 エフ・ディ−・ケイ株式会社 高透磁率酸化物磁性材料の製造方法
CN102360678A (zh) * 2011-06-27 2012-02-22 海安县鹰球粉末冶金有限公司 一种软磁铁氧体热敏磁芯及其制造方法
CN204820499U (zh) * 2015-07-28 2015-12-02 东莞市汇成真空科技有限公司 一种用于工模具的多层复合硬质膜

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110620005A (zh) * 2019-08-05 2019-12-27 无锡斯贝尔磁性材料有限公司 一种裸线直绕磁芯的生产方法

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