CN103714928A - Ferro-cerium-based rapid quenching permanent magnet powder and preparation method of ferro-cerium-based rapid quenching permanent magnet powder - Google Patents
Ferro-cerium-based rapid quenching permanent magnet powder and preparation method of ferro-cerium-based rapid quenching permanent magnet powder Download PDFInfo
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Abstract
本发明涉及一种铈铁基快淬永磁粉及制备技术,该铈铁基快淬永磁粉的合金成分化学式为:[Ce100-x,Rex]aFe100-a-b-cBbTMc,其中,x为稀土总量的质量百分比,a,b和c分别表示对应元素的质量百分比,0≤x≤50%,27.5%≤a≤32%;0.8%≤b≤1.5%;0.5%≤c≤5%;Re为Nd,Pr,Dy,Tb元素中的一种或几种,TM为Ga,Co,Cu,Nb,Al元素中的一种或几种;本发明采用水冷电磁辊(铜合金辊或钼辊)可制备出铈铁基永磁粉与不含Ce的Re′-Fe-B两种磁粉,利用上述两种磁粉可制备出双硬磁主相或多硬磁主相的铈铁基热压磁体。该发明填补了目前市场上的中、低档磁粉的空白,产品性价比高,适于工程化生产。
The invention relates to a cerium-iron-based quick-quenching permanent magnet powder and its preparation technology. The alloy composition chemical formula of the cerium-iron-based quick-quenching permanent magnet powder is: [Ce 100-x , Re x ] a Fe 100-abc B b TM c , wherein , x is the mass percentage of the total amount of rare earth, a, b and c respectively represent the mass percentage of the corresponding element, 0≤x≤50%, 27.5%≤a≤32%; 0.8%≤b≤1.5%; 0.5%≤c ≤5%; Re is one or more of Nd, Pr, Dy, Tb elements, TM is one or more of Ga, Co, Cu, Nb, Al elements; the present invention adopts water-cooled electromagnetic roller (copper Alloy roller or molybdenum roller) can prepare two kinds of magnetic powders, cerium-iron-based permanent magnet powder and Ce-free Re'-Fe-B. Using the above two magnetic powders, cerium with double hard magnetic main phase or multiple hard magnetic main phase can be prepared. Iron-based hot-pressed magnets. The invention fills the blank of medium and low-grade magnetic powder in the current market, and the product has high cost performance and is suitable for engineering production.
Description
技术领域technical field
本发明属于稀土永磁材料技术领域,尤其涉及一种铈铁基快淬永磁粉及制备方法。The invention belongs to the technical field of rare earth permanent magnet materials, and in particular relates to a cerium-iron-based quick-quenching permanent magnet powder and a preparation method thereof.
背景技术Background technique
快淬永磁粉是热压/热流变永磁体的核心材料,决定着磁体的性能,热压/热流变工艺具有简单、低温、短时、可近终成形等特点,特别是在辐射取向和多极取向磁环及纳米双相复合磁体制备方面具有独到之处。目前的热压/热流变钕铁硼磁体中金属钕Nd占原材料成本的90%以上。随着近年来全球稀土永磁体产量的不断增加,金属钕大量的使用,使稀土元素的应用极不平衡,本发明的新型热压铈铁基快淬永磁粉及制备技术是实现稀土元素平衡应用的重大突破,具有重大的现实意义。The quick-quenching permanent magnet powder is the core material of the hot-pressed/thermo-rheological permanent magnet, which determines the performance of the magnet. The hot-pressed/thermo-rheological process has the characteristics of simplicity, low temperature, short time, and near-net forming, especially in the radiation orientation and It is unique in the preparation of multi-pole oriented magnetic rings and nano-two-phase composite magnets. The metal neodymium Nd in the current hot-pressed/thermo-rheological NdFeB magnets accounts for more than 90% of the cost of raw materials. With the increasing production of rare earth permanent magnets in the world in recent years, the use of a large amount of metal neodymium makes the application of rare earth elements extremely unbalanced. The new hot-pressed cerium-iron-based quick-quenching permanent magnet powder and its preparation technology of the present invention are to realize the balanced application of rare earth elements. The major breakthrough has great practical significance.
在天然稀土资源中,除Nd外还有储量丰富且价格低廉的金属铈Ce。然而由于Ce2Fe14B的磁矩Js和各向异性场HA远低于Nd2Fe14B,采用传统的制备方法制备的产品无法满足用户对性能的要求。在现有技术中,中国专利申请CN101694797A,公开了Ce含量没有超过稀土总量的40wt%,生产的是速凝带,最终的永磁材料产品是主要做粘结磁体的磁粉。CN102220538A中,主相(Re2Fe14B)合金中不含La、Ce;在辅相合金(又称为液相合金或富稀土相合金)中,Ce占辅相合金总重量的最大值为30wt%、La占辅相合金总重量的最大值为25wt%,实施例中,主相合金与辅相合金按最高配比88:12混合,则最终磁体中的Ce、La总量不超过磁体中稀土总量的12wt%,而且上述现有技术针对的是所谓低失重磁体(失重竟高达2mg/cm2)。在CN102360657A中,稀土总量占“N35镧铈磁体”总重量的35wt%,而La-Ce仅占总量的20wt%,而且该申请的实施例没有分别给出La和Ce占稀土总量的百分比,显然,La、Ce所占比例不同,最终磁体的磁性能也不同,不可能出现实施例给出的唯一结果,Be=12kOe,Hcj=12.6kOe,(BH)max=34.2MGOe。Among natural rare earth resources, besides Nd, there is abundant and cheap metal cerium Ce. However, because the magnetic moment Js and anisotropy field H A of Ce 2 Fe 14 B are much lower than that of Nd 2 Fe 14 B, the products prepared by traditional preparation methods cannot meet the performance requirements of users. In the prior art, the Chinese patent application CN101694797A discloses that the Ce content does not exceed 40wt% of the total amount of rare earths, the production is quick-setting tape, and the final permanent magnet material product is mainly magnetic powder for bonded magnets. In CN102220538A, the main phase (Re 2 Fe 14 B) alloy does not contain La and Ce; in the auxiliary phase alloy (also known as liquid phase alloy or rare earth-rich phase alloy), the maximum value of Ce accounting for the total weight of the auxiliary phase alloy is 30wt%, and the maximum value of La accounting for the total weight of the auxiliary phase alloy is 25wt%. In the embodiment, the main phase alloy and the auxiliary phase alloy are mixed at the highest ratio of 88:12, and the total amount of Ce and La in the final magnet does not exceed that of the magnet. 12wt% of the total amount of medium rare earths, and the above-mentioned prior art is aimed at so-called low weight loss magnets (the weight loss is as high as 2mg/cm 2 ). In CN102360657A, the total amount of rare earth accounts for 35wt% of the total weight of "N35 lanthanum cerium magnet", while La-Ce only accounts for 20wt% of the total amount, and the examples of this application do not provide the ratio of La and Ce to the total amount of rare earth respectively. Percentage, obviously, the proportion of La and Ce is different, and the magnetic properties of the final magnet are also different. It is impossible to appear the only result given in the embodiment, Be=12kOe, Hcj=12.6kOe, (BH)max=34.2MGOe.
总之,上述专利申请/专利涉及到Ce元素的稀土永磁材料,其Ce含量都小于(或等于)稀土总量的40%,且制备永磁速凝带多用于制造各向同性粘结磁粉的。速凝片(带)与快淬片(带)是两个不同的概念,制备快淬片(带)时的辊速(表面线速度)在15~50m/s范围,快淬带为非晶带或微晶结构,通常只能制备成各向同性磁粉,用来制作粘结磁体或单主相热压磁体。速凝带是一种结晶铸片(带),制备速凝带时的辊速(表面线速度)在1~7m范围,主要由垂直贴辊面方向生长的片(带)状晶和微量等轴细晶组成,主要用来制备烧结磁体。在现有技术中,对于高Ce用于铈铁基快淬永磁粉,至今还未见报道。In short, the above-mentioned patent applications/patents involve rare earth permanent magnet materials of Ce element, whose Ce content is less than (or equal to) 40% of the total amount of rare earth, and the preparation of permanent magnet quick-setting tape is mostly used to manufacture isotropic bonded magnetic powder . Quick-setting sheet (belt) and quick-quenching sheet (belt) are two different concepts. The roll speed (surface line speed) when preparing quick-quenching sheet (belt) is in the range of 15-50m/s, and the quick-quenching sheet (belt) is amorphous. Ribbon or microcrystalline structure, usually can only be prepared as isotropic magnetic powder, used to make bonded magnets or single main phase hot-pressed magnets. The quick-setting belt is a kind of crystalline cast sheet (belt). The roll speed (surface linear speed) when preparing the quick-setting belt is in the range of 1 to 7m. Axial fine grain composition, mainly used to prepare sintered magnets. In the prior art, there has been no report on the use of high Ce in cerium-iron-based quick-quenching permanent magnet powder.
发明内容Contents of the invention
本发明的目的在于提供一种铈铁基快淬永磁粉及其制备方法,该快淬永磁粉可用于制备铈铁基热压/热流变磁体;或与一定量的Re′-Fe-B(Re′为不包括Ce的稀土元素)磁粉配比混合,可制备出新型双(硬磁)主相的铈铁基热压磁体和常规的含Ce钕铁硼热压磁体。The object of the present invention is to provide a kind of cerium-iron-based quick-quenching permanent magnet powder and preparation method thereof, and this quick-quenching permanent magnet powder can be used for preparing cerium-iron-based hot-pressed/thermo-rheological magnet; or with a certain amount of Re'-Fe-B( Re' is a rare earth element that does not include Ce) and the magnetic powder is mixed in proportion to prepare a new dual (hard magnetic) main phase cerium-iron-based hot-pressed magnet and a conventional Ce-containing NdFeB hot-pressed magnet.
本发明的目的是通过以下技术方案实现的:The purpose of the present invention is achieved through the following technical solutions:
一种铈铁基快淬永磁粉,快淬永磁粉的合金成分化学式为:[Ce100-x,Rex]aFe100-a-b-cBbTMc,其中,x为稀土总量中Re的质量百分比,a,b和c分别表示对应元素的质量百分比,0≤x≤50%,27.5%≤a≤32%;0.8%≤b≤1.5%;0.5%≤c≤5%;Re为Nd,Pr,Dy,Tb元素中的一种或几种,TM为Ga,Co,Cu,Nb,Al元素中的一种或几种;其中,该快淬永磁粉中的Ce含量大于稀土总量的50%,当Re为Nd时,Nd含量小于或等于稀土总量的50%。A cerium-iron-based quick-quenching permanent magnet powder, the alloy composition chemical formula of the quick-quenching permanent magnet powder is: [Ce 100-x , Re x ] a Fe 100-abc B b TM c , wherein, x is the mass of Re in the total amount of rare earth Percentage, a, b and c respectively represent the mass percentage of the corresponding element, 0≤x≤50%, 27.5%≤a≤32%; 0.8%≤b≤1.5%; 0.5%≤c≤5%; Re is Nd, One or more of Pr, Dy, Tb elements, TM is one or more of Ga, Co, Cu, Nb, Al elements; wherein, the Ce content in the quick quenching permanent magnet powder is greater than the total amount of rare earth 50%, when Re is Nd, the Nd content is less than or equal to 50% of the total rare earth.
所述的铁基快淬永磁粉,通过如下方法制备:The described iron-based quick-quenching permanent magnet powder is prepared by the following method:
首先采用快淬工艺的电磁辊制备铈铁基快淬永磁带,快淬带的微观结构是微晶、非晶或等轴晶,而不会出现速凝工艺制备的速凝带中的柱状晶;First, the electromagnetic roller of the rapid quenching process is used to prepare the cerium-iron-based rapid quenching permanent tape. The microstructure of the rapid quenching tape is microcrystalline, amorphous or equiaxed, and there will be no columnar crystals in the rapid setting tape prepared by the rapid setting process. ;
用得到的铈铁基快淬永磁带制备出铈铁基永磁粉与不含Ce的Re′-Fe-B两种磁粉,利用上述两种磁粉进行混合,可制备出双硬磁主相或多硬磁主相的铈铁基热压磁体。The obtained cerium-iron-based quick-quenching permanent magnetic tape is used to prepare two kinds of magnetic powders: cerium-iron-based permanent magnet powder and Ce-free Re'-Fe-B. By mixing the above two magnetic powders, a double hard magnetic main phase or multi-phase hard magnetic powder can be prepared. Cerium-iron-based hot-pressed magnets with hard magnetic main phase.
所述的铁基快淬永磁粉的制备方法,The preparation method of described iron-based quick-quenching permanent magnet powder,
首先采用电磁辊制备铈铁基快淬永磁带,用得到的铈铁基快淬永磁带制备出铈铁基永磁粉与不含Ce的Re′-Fe-B磁粉,利用上述两种磁粉,可制备出双硬磁主相或多硬磁主相的铈铁基热压磁体,具体包括如下步骤:First, an electromagnetic roller is used to prepare a cerium-iron-based quick-quenching permanent magnetic tape, and the obtained cerium-iron-based quick-quenching permanent magnetic tape is used to prepare a cerium-iron-based permanent magnetic powder and a Ce-free Re'-Fe-B magnetic powder. Using the above two magnetic powders, the A cerium-iron-based hot-pressed magnet with double hard magnetic main phases or multiple hard magnetic main phases is prepared, which specifically includes the following steps:
步骤1:按照如下质量百分比的成分化学式进行配料:[Ce100-x,Rex]aFe100-a-b-cBbTMc,其中x为稀土总量中Re的质量百分比,a,b和c分别表示对应元素的质量百分比,0≤x≤50%,27.5%≤a≤32%;0.8%≤b≤1.5%;0.5%≤c≤5%;Re为Nd,Pr,Dy,Tb元素中的一种或几种,TM为Ga,Co,Cu,Nb,Al元素中的一种或几种;Step 1: Dosing according to the following composition chemical formula of mass percentage: [Ce 100-x , Re x ] a Fe 100-abc B b TM c , wherein x is the mass percentage of Re in the total amount of rare earth, a, b and c are respectively Indicates the mass percentage of the corresponding element, 0≤x≤50%, 27.5%≤a≤32%; 0.8%≤b≤1.5%; 0.5%≤c≤5%; Re is Nd, Pr, Dy, Tb elements One or more, TM is one or more of Ga, Co, Cu, Nb, Al elements;
步骤2:配好的原料装入快淬设备中,然后在Ar气保护下低温熔炼且进行电磁搅拌精炼,根据辊速和合金成分,调整水冷电磁辊的频率为零或2000Hz~9000Hz之间,然后浇注在线速度为15~45m/s已设置电磁频率的水冷电磁辊辊表面层4上,制得平均厚度为0.01~0.06mm的快淬片或快淬带3;Step 2: Put the prepared raw materials into the quick quenching equipment, then smelt at low temperature under the protection of Ar gas and conduct electromagnetic stirring refining. According to the roll speed and alloy composition, adjust the frequency of the water-cooled electromagnetic roll to zero or between 2000Hz and 9000Hz. Then cast on the
步骤3:对快淬片或快淬带3进行破碎,得到粒度范围在0.056~0.28mm的快淬片或快淬带。Step 3: crushing the quenched sheet or the quenched
所述步骤2中:首先将原材料放入中频感应熔炼的设备的载料装置1,在真空度达到10-2Pa以上时使用加热线圈2给送电预热,待真空度再次达到10-2Pa以上后停止抽真空并充入高纯Ar,使炉内Ar气压达到-0.04~-0.08MPa后进行熔炼;待原材料全部熔化后施以电磁搅拌精炼,随后进行钢液浇注。In the step 2: first put the raw material into the
在步骤3中,根据对快淬片或快淬带3的不同需求,采用搅拌磨或砂磨进行制粉,得到满足要求的磁粉,制备磁体的前驱磁粉。In
为了获得粒径均一性的磁粉,分别选择45目~260目不同目数的振动筛,将磁粉倒入振动筛中过目,通过分类筛选,获得所需粒径的磁粉。In order to obtain magnetic powder with uniform particle size, vibrating sieves with different meshes from 45 mesh to 260 mesh are selected, and the magnetic powder is poured into the vibrating sieve for screening, and the magnetic powder with the required particle size is obtained through classification and screening.
所述辊表面层4为铜合金辊面或钼辊面。The
本发明的新型热压铈铁基永磁体用的快淬磁粉具有Nd2Fe14B的晶体结构,但其Ce含量大于或等于稀土总量的50%,而Nd含量小于或等于稀土总量的50%。将这种Ce-Fe基快淬磁粉与一定量的钕铁硼磁粉配比混合,经过热压/热流变工艺,不仅可以制备出含Ce的常规钕铁硼热压磁体,还可制备出新型双硬磁相或多硬磁相的铈铁基热压磁体。The quick-quenched magnetic powder for the novel hot-pressed cerium-iron-based permanent magnet of the present invention has a crystal structure of Nd 2 Fe 14 B, but its Ce content is greater than or equal to 50% of the total amount of rare earths, and the content of Nd is less than or equal to 50% of the total amount of rare earths. 50%. By mixing this Ce-Fe-based quick-quenching magnetic powder with a certain amount of NdFeB magnetic powder, after hot pressing/thermo-rheological process, not only conventional NdFeB hot-pressed magnets containing Ce can be prepared, but also new-type NdFeB magnets can be prepared. Cerium-iron-based hot-pressed magnets with double hard magnetic phases or multiple hard magnetic phases.
本发明的有益效果在于:The beneficial effects of the present invention are:
与现有技术相比,本发明具有以下优点:Compared with the prior art, the present invention has the following advantages:
1、首先是高铈含量的快淬片(带)和各向异性磁粉,其铈含量一般大于或等于稀土总量的50%;对比铁硼磁速凝带,铈铁基快淬片(带)的熔炼温度和时间明显降低,可以节省生产时间及能源消耗;1. The first is the quick-quenching sheet (tape) and anisotropic magnetic powder with high cerium content, and its cerium content is generally greater than or equal to 50% of the total amount of rare earth; ) smelting temperature and time are significantly reduced, which can save production time and energy consumption;
2、铈铁基快淬片(带)和各向异性磁粉的抗氧化性能明显优于金属铈,解决了单纯存放金属铈易氧化的问题;2. The oxidation resistance of cerium-iron-based quick-quenching sheet (belt) and anisotropic magnetic powder is obviously better than that of metal cerium, which solves the problem of easy oxidation of metal cerium when it is simply stored;
3、本发明采用全新设计的水冷电磁辊(铜合金辊面或钼合金辊面),制备出的快淬带基本都是微晶、非晶或等轴晶结构,而不会出现速凝工艺制备的速凝带中粗大的柱状晶。3. The present invention adopts a newly designed water-cooled electromagnetic roller (copper alloy roller surface or molybdenum alloy roller surface), and the prepared quick-quenching zone is basically microcrystalline, amorphous or equiaxed crystal structure, and there will be no quick-setting process Coarse columnar crystals in the prepared quick-setting zone.
4、本发明并不是简单的Ce替代Nd问题,由于铈含量一般大于或等于稀土总量的50%,产品为一种新型的CeFeB永磁快淬片(带)或磁粉,不仅可以制备出含Ce的常规钕铁硼热压磁体,还可制备出新型双硬磁相或多硬磁相的铈铁基热压磁体。该发明填补了目前市场上的中、低档磁粉的空白,产品性价比高,适于工程化生产.4. The present invention is not a simple problem of replacing Nd with Ce. Because the cerium content is generally greater than or equal to 50% of the total amount of rare earths, the product is a novel CeFeB permanent magnet quick-quenching sheet (band) or magnetic powder, which not only can be prepared containing Ce's conventional NdFeB hot-pressed magnets can also prepare new-type cerium-iron-based hot-pressed magnets with double hard magnetic phases or multiple hard magnetic phases. This invention fills the gap of medium and low-grade magnetic powder in the current market. The product is cost-effective and suitable for engineering production.
附图标记reference sign
1载料装置1 loading device
2加热线圈2 heating coils
3快淬片或快淬带3 quick-quenching sheet or quick-quenching belt
4辊表面层(铜合金辊面或钼辊面)4 roll surface layers (copper alloy roll surface or molybdenum roll surface)
5磁场线圈(出)5 field coils (out)
6磁场线圈(入)6 magnetic field coils (in)
附图说明Description of drawings
图1为本发明快淬工艺示意图。Fig. 1 is a schematic diagram of the rapid quenching process of the present invention.
图2为本发明成分为(Ce90Nd10)30FebalCo4Ga0.4B0.92磁粉的磁滞回线。Fig. 2 is the hysteresis loop of the magnetic powder whose composition is (Ce 90 Nd 10 ) 30 Fe bal Co 4 Ga 0.4 B 0.92 according to the present invention.
图3为本发明成分为(Ce70Nd30)30FebalCo3.9Ga0.4Cu0.1B0.92磁粉的磁滞回线。Fig. 3 is the hysteresis loop of the magnetic powder whose composition is (Ce 70 Nd 30 ) 30 Fe bal Co 3.9 Ga 0.4 Cu 0.1 B 0.92 according to the present invention.
图4为本发明成分为(Ce50Nd50)30FebalCo3.9Ga0.4Al0.1B0.92磁粉的磁滞回线。Fig. 4 is the hysteresis loop of the magnetic powder whose composition is (Ce 50 Nd 50 ) 30 Fe bal Co 3.9 Ga 0.4 Al 0.1 B 0.92 according to the present invention.
图5为本发明成分为(Ce55Nd42)30FebalCo3.9Ga0.4B0.92磁粉的磁滞回线。Fig. 5 is the hysteresis loop of the magnetic powder whose composition is (Ce 55 Nd 42 ) 30 Fe bal Co 3.9 Ga 0.4 B 0.92 according to the present invention.
图6为本发明成分为(Ce50Nd47Dy1Pr1Tb1)32FebalCo4.2Ga0.8B1.5磁粉的磁滞回线。Fig. 6 is the hysteresis loop of the magnetic powder whose composition is (Ce 50 Nd 47 D y1 Pr 1 Tb 1 ) 32 Fe bal Co 4.2 Ga 0.8 B 1.5 according to the present invention.
图7为本发明成分为(Ce74Nd25Dy1)27,5FebalGa0.5B0.8磁粉的磁滞回线。Fig. 7 is the hysteresis loop of the magnetic powder whose composition is (Ce 74 Nd 25 D y1 ) 27,5 Fe bal Ga 0.5 B 0.8 according to the present invention.
具体实施方式Detailed ways
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详细描述。The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
采用低温熔炼,快淬过程在铜合金辊或钼辊上制备磁粉(如图1所示),工艺步骤如下:Using low temperature melting and rapid quenching process to prepare magnetic powder on copper alloy roll or molybdenum roll (as shown in Figure 1), the process steps are as follows:
步骤1:按照质量百分比的成分化学式:[Ce100-x,Rex]aFe100-a-b-cBbTMc配制原料(如表1所示),其中Re为Nd,Pr,Dy,Tb元素中的一种或几种,TM为Ga,Co,Cu,Nb,Al元素中的一种或几种。Step 1: According to the chemical formula of the composition in mass percentage: [Ce 100-x , Re x ] a Fe 100-abc B b TM c to prepare raw materials (as shown in Table 1), wherein Re is Nd, Pr, Dy, Tb elements One or more of them, TM is one or more of Ga, Co, Cu, Nb, Al elements.
表1不同实施例合金成分化学式Table 1 Alloy composition chemical formula of different embodiments
步骤2:配好的原料分别熔炼:如图1所示,首先将原材料放入中频感应熔炼设备的载料装置1中,在真空度达到10-2Pa以上时使用加热线圈2给送电预热,待真空度再次达到10-2Pa以上后停止抽真空并充入高纯Ar,使炉内Ar气压达到-0.04~-0.08MPa后进行熔炼;待温度达到1200℃上下,原材料全部熔化后施以电磁搅拌精炼,随后将钢液浇注到线速度为15~45m/s且已设置电磁频率的辊表面层4上,制得平均厚度为0.01~0.06mm的快淬片3(带)。Step 2: The prepared raw materials are smelted separately: as shown in Figure 1, first put the raw materials into the
该熔炼设备在铁芯的外部缠绕与其功率相匹配的导电绕组,这种通有电流的线圈像磁铁一样具有磁性,它也叫做电磁铁。电磁铁有许多优点:电磁铁的磁性有无可以用通、断电流控制;磁性的大小可以用电流的强弱或线圈的匝数多少来控制;也可通过改变电阻控制电流大小来控制磁性大小;它的磁极可以由改变电流的方向来控制,等等。即:磁性的强弱可以改变、磁性的有无可以控制、磁极的方向可以改变,磁性可因电流的消失而消失。The smelting equipment winds a conductive winding that matches its power on the outside of the iron core. This current-carrying coil is magnetic like a magnet, and it is also called an electromagnet. The electromagnet has many advantages: whether the magnetism of the electromagnet can be controlled by on and off current; the magnitude of the magnetism can be controlled by the strength of the current or the number of turns of the coil; the magnitude of the magnetism can also be controlled by changing the resistance to control the magnitude of the current ; its magnetic poles can be controlled by changing the direction of the current, and so on. That is: the strength of magnetism can be changed, the presence or absence of magnetism can be controlled, the direction of magnetic poles can be changed, and magnetism can disappear due to the disappearance of current.
步骤3:根据对快淬片3(带)的不同需求,采用搅拌磨沙磨或氢破碎进行制备的前驱磁粉,得到粒度范围在0.056~0.28mm的快淬片(带)。Step 3: According to the different requirements for the quenching sheet 3 (tape), the precursor magnetic powder is prepared by stirring and grinding or hydrogen crushing to obtain the quenching sheet (tape) with a particle size range of 0.056-0.28 mm.
步骤4:为了获得粒径均一性的磁粉,选择不同目数(45目~260目)的振动筛,将磁粉倒入振动筛中过目,通过分类筛选,获得所需粒径的磁粉。Step 4: In order to obtain magnetic powder with uniform particle size, select a vibrating sieve with different meshes (45 mesh to 260 mesh), pour the magnetic powder into the vibrating sieve for screening, and obtain the magnetic powder with the required particle size through classification and screening.
不同实施例的具体工艺参数参见表2。The specific process parameters of different embodiments are shown in Table 2.
表2不同实施例合金制备工艺参数Table 2 Alloy Preparation Process Parameters of Different Examples
注:快淬片的厚度以及平均粒径的大小,与辊轮和风选轮的转速是相关的,当辊轮和风选轮速度越大的时候,厚度和粒度会越小。Note: The thickness and average particle size of the quenched sheet are related to the speed of the roller and winnowing wheel. When the speed of the roller and winnowing wheel is higher, the thickness and particle size will be smaller.
采用Versalab多功能振动样品磁强计测得磁粉的磁性能,参见表3及附图2、3、4、5、6、7。The magnetic properties of the magnetic powder were measured by the Versalab multifunctional vibrating sample magnetometer, see Table 3 and accompanying
表3不同实施例合金的磁性能参数The magnetic property parameter of table 3 different embodiment alloys
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104599802A (en) * | 2014-12-03 | 2015-05-06 | 中国科学院宁波材料技术与工程研究所 | Rare earth permanent magnet material and preparation method thereof |
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Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102693799A (en) * | 2012-06-12 | 2012-09-26 | 钢铁研究总院 | Electromagnetically-solidified and hot-pressed nanocrystalline magnet of permanent magnet rapidly-quenched ribbon and preparation method of electromagnetically-solidified and hot-pressed nanocrystalline magnet |
CN102699294A (en) * | 2012-06-12 | 2012-10-03 | 钢铁研究总院 | Electromagnetic solidification Nd-Fe-B permanent magnet rapid-solidification sheet and preparation method thereof |
CN102800454A (en) * | 2012-08-30 | 2012-11-28 | 钢铁研究总院 | Low-cost double-main phase Ce permanent-magnet alloy and preparation method thereof |
JP2012253162A (en) * | 2011-06-02 | 2012-12-20 | Daido Electronics Co Ltd | Reclaimed magnetic powder for magnet and production method of magnet body |
CN102982935A (en) * | 2012-11-30 | 2013-03-20 | 钢铁研究总院 | Permanent magnetic material without heavy rare earth and hot-pressing preparation method thereof |
CN103187133A (en) * | 2013-03-20 | 2013-07-03 | 钢铁研究总院 | Rare earth permanent magnetic alloy and magnetic phase composite preparation method thereof |
-
2013
- 2013-12-30 CN CN201310744506.9A patent/CN103714928B/en active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012253162A (en) * | 2011-06-02 | 2012-12-20 | Daido Electronics Co Ltd | Reclaimed magnetic powder for magnet and production method of magnet body |
CN102693799A (en) * | 2012-06-12 | 2012-09-26 | 钢铁研究总院 | Electromagnetically-solidified and hot-pressed nanocrystalline magnet of permanent magnet rapidly-quenched ribbon and preparation method of electromagnetically-solidified and hot-pressed nanocrystalline magnet |
CN102699294A (en) * | 2012-06-12 | 2012-10-03 | 钢铁研究总院 | Electromagnetic solidification Nd-Fe-B permanent magnet rapid-solidification sheet and preparation method thereof |
CN102800454A (en) * | 2012-08-30 | 2012-11-28 | 钢铁研究总院 | Low-cost double-main phase Ce permanent-magnet alloy and preparation method thereof |
CN102982935A (en) * | 2012-11-30 | 2013-03-20 | 钢铁研究总院 | Permanent magnetic material without heavy rare earth and hot-pressing preparation method thereof |
CN103187133A (en) * | 2013-03-20 | 2013-07-03 | 钢铁研究总院 | Rare earth permanent magnetic alloy and magnetic phase composite preparation method thereof |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106233399A (en) * | 2014-04-15 | 2016-12-14 | Tdk株式会社 | Rare earth element permanent magnet |
CN106233399B (en) * | 2014-04-15 | 2018-08-03 | Tdk株式会社 | Rare earth element permanent magnet |
CN104599802A (en) * | 2014-12-03 | 2015-05-06 | 中国科学院宁波材料技术与工程研究所 | Rare earth permanent magnet material and preparation method thereof |
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CN105225781B (en) * | 2015-10-27 | 2017-09-29 | 钢铁研究总院 | A kind of many Hard Magnetic principal phase Ce permanent magnets of high corrosion-resistant and preparation method thereof |
CN106128670A (en) * | 2016-06-12 | 2016-11-16 | 钢铁研究总院 | A kind of low-cost rare earth ferrum boron permanent magnet and preparation method thereof |
CN106128670B (en) * | 2016-06-12 | 2018-12-11 | 钢铁研究总院 | A kind of low-cost rare earth iron boron permanent magnet and preparation method thereof |
CN106799479A (en) * | 2017-03-17 | 2017-06-06 | 山东三尺企业管理咨询有限公司 | D.C. magnetic field changes amorphous method and device of the spray with magnetic domain orientation |
CN113035559A (en) * | 2021-04-01 | 2021-06-25 | 包头市科锐微磁新材料有限责任公司 | Preparation method of high-performance neodymium iron boron isotropic magnetic powder |
CN113782290A (en) * | 2021-09-07 | 2021-12-10 | 钢铁研究总院 | high-Ce-content double-main-phase high-magnetic-energy product magnet and preparation method thereof |
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