CN104464135A - 可用于声磁防盗标签的软磁振动片的制备方法 - Google Patents

可用于声磁防盗标签的软磁振动片的制备方法 Download PDF

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CN104464135A
CN104464135A CN201410493391.5A CN201410493391A CN104464135A CN 104464135 A CN104464135 A CN 104464135A CN 201410493391 A CN201410493391 A CN 201410493391A CN 104464135 A CN104464135 A CN 104464135A
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vibrating reed
heat treatment
magnetic
alloy strip
acoustic
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于成伟
孙瑞君
李振宇
朱志强
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BEIJING YEKE MAGNETIC MATERIALS CO LTD
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BEIJING YEKE MAGNETIC MATERIALS CO LTD
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    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/22—Electrical actuation
    • G08B13/24—Electrical actuation by interference with electromagnetic field distribution
    • G08B13/2402—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting
    • G08B13/2405—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting characterised by the tag technology used
    • G08B13/2408—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting characterised by the tag technology used using ferromagnetic tags
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C30/00—Alloys containing less than 50% by weight of each constituent
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/22—Electrical actuation
    • G08B13/24—Electrical actuation by interference with electromagnetic field distribution
    • G08B13/2402—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting
    • G08B13/2405—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting characterised by the tag technology used
    • G08B13/2422—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting characterised by the tag technology used using acoustic or microwave tags
    • 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
    • H01F1/12—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 soft-magnetic materials
    • H01F1/14—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 soft-magnetic materials metals or alloys
    • H01F1/147—Alloys characterised by their composition
    • H01F1/14708—Fe-Ni based alloys
    • 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
    • H01F1/12—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 soft-magnetic materials
    • H01F1/14—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 soft-magnetic materials metals or alloys
    • H01F1/147—Alloys characterised by their composition
    • H01F1/14708—Fe-Ni based alloys
    • H01F1/14716—Fe-Ni based alloys in the form of sheets

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Electromagnetism (AREA)
  • Computer Security & Cryptography (AREA)
  • Power Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Dispersion Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Acoustics & Sound (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Burglar Alarm Systems (AREA)

Abstract

本发明公开了一种可用于声磁防盗标签的软磁振动片的制备方法，其特征在于：所述的制备方法按照以下步骤进行：选用厚度为25-30μm，宽度为5-12mm的Fe40Ni38Mo4B18合金带材，利用连续式软磁合金带材张力热处理装置对上述合金带材进行半晶化热处理，处理过程中，收卷速度为2-2.5m/min，张力为40-60MPa，热处理温度为390-410℃，经热处理后的带材裁剪成10-50mm长度的带材。

Description

可用于声磁防盗标签的软磁振动片的制备方法
技术领域
本发明涉及一种半成品磁性材料加工领域的加工方法，特别是一种可用于声磁防盗标签的软磁振动片的制备方法。 
背景技术
当今商品防盗系统（Electronic Article Surveillance，EAS）在零售商业系统的应用越来越广泛。直至目前，EAS系统主要包括六种类型，分别为电磁波系统，微波系统，射频系统，智能型系统和声磁系统。电磁波，微波，射频系统问世较早，但受其原理的限制，性能上没有多大改善。分频系统主要用于硬标签，该标签只能用于服装、衣物等可别挂等商品，无法应用于大型的超市。智能系统由于其比较昂贵，因此只能应用于贵重物品。而声磁防盗具有价格低、使用方便，激活和解码方便，防盗检测率高等特性，因此可以应用在商场的所有产品上。所谓的声磁系统，是利用非晶合金材料薄带因具有很高磁性-弹性耦合系数故而可以发出强共振信号的原理，将这些材料成功应用于商业防盗系统（声磁系统）。一般的声磁防盗系统主要包括探测器、解码器、声磁防盗标签等。声磁系统工作过程首先由探测器每20毫秒发射一次58kHz的脉冲波，如果探测器在发射信号关断后连续5次（可调）检测到共振信号，如每次共振信号的功率和和频率都相同，探测器中的报警装置发生报警。如果外界干扰信号不能在1秒内产生5次完全相同的信号，则报警器无法报警，进而可以保证信号稳定，几乎可以保证零误报的作用。解码器是将防盗磁条中的偏置片退磁而将共振频率移出探测频段窗口同时显著降低了共振信号强度，而不触发报警器。 
长期以来作为共振片的软磁材料的热处理工艺都是技术难题，传统的对于软磁材料进行处理的工艺大多数集中在温度场晶化热处理、磁场晶化热处理、磁场应力场晶化热处理等，前两种方法根本无法获得共振片软磁材料的所要求的性能，后一种方法往往存在者耗时长、能耗高，工艺繁琐等问题，因此现在需要快捷、稳定、产品一致性好的新型处理方法。 
发明内容
本发明是为了解决现有技术所存在的上述不足，提出一种快捷、方便，能耗低，效果好，最终产品一致性高的可用于声磁防盗标签的软磁振动片的制备方法。 
本发明的技术解决方案是：一种可用于声磁防盗标签的软磁振动片的制备方法，其特征在于：所述的制备方法按照以下步骤进行： 
取厚度为25-30μm，宽度为5-12mm的Fe40Ni38Mo4B18合金带材，利用连续式软磁合金带材张力热处理装置对上述合金带材进行半晶化热处理，处理过程中，收卷速度为2-2.5m/min，张力为40-60MPa，热处理温度为390-410℃，经热处理后的带材裁剪成长度为10-50mm的软磁振动片。
本发明同现有技术相比，具有如下优点： 
本发明所公开的软磁振动片的制备方法，相比于传统的制备软磁振动片的方法，具有便于操作，耗时短，能耗低等优点，它最主要的优点是由于它采用了特殊的加工条件，因此其热处理效果十分稳定，能够保证最终产品的一致性，十分适合于软磁振动片的工业化、大批量生产。因此可以说它具备了多种优点，特别适合于在本领域中推广应用，其市场前景十分广阔。
具体实施方式
下面将说明本发明的具体实施方式：一种可用于声磁防盗标签的软磁振动片的制备方法，按照以下步骤进行：取厚度为25-30μm，宽度为5-12mm的Fe40Ni38Mo4B18合金带材，利用连续式软磁合金带材张力热处理装置对上述合金带材进行热处理，使其半晶化，并且在处理过程中，其收卷速度为2-2.5m/min，张力为40-60MPa，热处理温度为390-410℃，最后将经过热处理后的带材裁剪成长度为10-50mm的软磁振动片。 
将经上述步骤获得的不同长度的软磁振动片分别安装在具有偏置磁场下的工装内，以测试材料的共振频率，经测试表明，上述制备方法可生产出共振频率在40~210kHz的软磁共振片。 
将经上述步骤处理后的5mm的钢带缠绕成外径22mm，内径17mm的磁环，利用静态磁测量系统测试其磁滞回线。其矩形比（剩磁Br/饱和磁感应强度Bs）为73.2%。可以表明材料仍然处于未完全晶化状态，即半晶化状态。 
具体实施例1 
将Fe40Ni38Mo4B18合金带材分剪成6mm宽的带材，采用连续式软磁材料张力热处理炉对其进行热处理，热处理过程中收卷速度2m/min，张力7N（47MPa），热处理温度为390℃，然后将热处理后的带材裁剪成长度为10、20、30、40和50mm的软磁振动片。将它们分别安装在具有偏置磁场的工装内，测试其共振频率。具体测试结果如表1。
经过该方法后可以稳定生产共振频率在45~210kHz内的共振片。 
 表1  6mm带材不同长度下的共振频率 
长度(mm) 10 20 30 40 50
共振频率(kHz) 215.1 108.7 70.42 52.08 44.25
 具体实施例2
将Fe40Ni38Mo4B18合金带材分剪成10mm宽的带材，采用连续式软磁材料张力热处理炉对其进行热处理，热处理过程中收卷速度2m/min，张力10N（40MPa），热处理温度为400℃，然后将热处理后的带材裁剪成长度为10、20、30、40和50mm的软磁振动片。将它们分别安装在具有偏置磁场的工装内，测试其共振频率。具体测试结果如表2。
经过该方法后可以稳定生产共振频率在40-195kHz内的共振片。 
表2  10mm带材不同长度下的共振频率 
长度(mm) 10 20 30 40 50
共振频率(kHz) 196.1 108.7 69.44 54.05 43.48
具体实施例3
将Fe40Ni38Mo4B18合金带材分剪成5mm宽的带材，采用连续式软磁材料张力热处理炉对其进行热处理，热处理过程中收卷速度2m/min，张力7N（56MPa），热处理温度为390℃，然后将热处理后的带材缠绕成外径为22mm，内径为17mm的磁环，使用静态软磁测量系统测试材料的静态磁滞回线。其矩形比（剩磁Br/饱和磁感应强度Bs）为73.2%。可以表明材料仍然处于未完全晶化状态。

Claims (1)

1.一种可用于声磁防盗标签的软磁振动片的制备方法，其特征在于：所述的制备方法按照以下步骤进行：
取厚度为25-30μm，宽度为5-12mm的Fe40Ni38Mo4B18合金带材，利用连续式软磁合金带材张力热处理装置对上述合金带材进行半晶化热处理，处理过程中，收卷速度为2-2.5m/min，张力为40-60MPa，热处理温度为390-410℃，经热处理后的带材裁剪成长度为10-50mm的软磁振动片。
CN201410493391.5A 2014-09-24 2014-09-24 可用于声磁防盗标签的软磁振动片的制备方法 Pending CN104464135A (zh)

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