CN105904651A - 一种怠速马达用磁性转子制造方法 - Google Patents

一种怠速马达用磁性转子制造方法 Download PDF

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CN105904651A
CN105904651A CN201610221081.7A CN201610221081A CN105904651A CN 105904651 A CN105904651 A CN 105904651A CN 201610221081 A CN201610221081 A CN 201610221081A CN 105904651 A CN105904651 A CN 105904651A
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inner sleeve
magnet ring
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CN105904651B (zh
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易潍
何国栋
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Hengdian Group DMEGC Magnetics Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
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    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/22—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip
    • B22F3/225—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip by injection molding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F5/10—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of articles with cavities or holes, not otherwise provided for in the preceding subgroups
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    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/1418—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure
    • B29C45/14221—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure by tools, e.g. cutting means
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    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/1459—Coating annular articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/76—Measuring, controlling or regulating
    • B29C45/78—Measuring, controlling or regulating of temperature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F13/00—Apparatus or processes for magnetising or demagnetising
    • H01F13/003—Methods and devices for magnetising 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
    • H01F41/0266—Moulding; Pressing
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/1418—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure
    • B29C2045/14237—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure the inserts being deformed or preformed outside the mould or mould cavity
    • B29C2045/14245—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure the inserts being deformed or preformed outside the mould or mould cavity using deforming or preforming means outside the mould cavity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
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Abstract

本发明涉及磁性转子制造技术领域，公开了一种怠速马达用磁性转子制造方法，包括以下步骤：a.磁环注塑配料：按以下质量百分比称取各组分：85%‑90%的钕铁硼粉、5%‑10%的尼龙粉、1.5%‑2%的骨粉、1%‑2.5%的二丙醇、0.5%‑1%的氯化钠，将上述各组分放入搅拌机中搅拌混合得到混合料；b.磁环成型；c.内套注塑成型；d.磁环充磁。磁环通过注塑制成，注塑过程中通过合理控制模具、喷嘴温度，使得磁环的韧性较好，在内套注塑成型时，磁环不易开裂，产品合格率高。

Description

一种怠速马达用磁性转子制造方法
技术领域
本发明涉及磁性转子制造技术领域，尤其涉及一种怠速马达用磁性转子制造方法。
背景技术
多极怠速马达磁性转子来实现怠速的脉冲的传递，从而改变发动机节流阀气门的开闭频率，可以使发动机怠速平稳、不易熄火、怠速油耗更少。而高磁性的转子可以使怠速马达动力更强，更稳定，所以小型多极高磁性怠速马达用磁性注塑转子需求很大。常见的怠速马达转子如图1所示，包括磁环1、位于磁环内部的内套2，内套的中心设置中心孔，中心孔内设有螺纹3，通常磁环都是通过锻造制成的，磁环制成之后装入模具内，直接通过模具在磁环内注塑进行注塑制成内套，内套由PPS塑料注塑成型，成型时的温度在300℃-330℃，然而在该温度下，磁环很容易开裂，这就导致最后制成的怠速马达磁性转子的合格率低、性能差。
发明内容
本发明为了克服现有技术中的磁性转子中的磁环在注塑内套过程中容易开裂的不足，提供了一种能防止磁环开裂、提高磁性转子合格率的怠速马达用磁性转子制造方法。
为了实现上述目的，本发明采用如下技术方案：
一种怠速马达用磁性转子制造方法，包括以下步骤：
a. 磁环注塑配料：按以下质量百分比称取各组分：85%-90%的钕铁硼粉、5%-10%的尼龙粉、1.5%-2%的骨粉、1%-2.5%的二丙醇、0.5%-1%的氯化钠，将上述各组分放入搅拌机中搅拌混合得到混合料；
b.磁环成型：将混合料放入磁环注塑机内，通过磁环注塑机上的喷嘴将混合料挤入磁环模具内，磁环模具温度为60℃-70℃，磁环注塑机上的喷嘴处温度为210℃-260℃，磁环注塑后冷却成型；
c.内套注塑成型：将内套成型物料装入内套注塑机内，将成型后的磁环装入内套模具内，将螺纹镶件装入内套模具内，通过内套注塑机上的喷嘴将内套成型物料注入内套模具内，内套模具温度为95℃-110℃，内套注塑机上的喷嘴处温度为285℃-330℃，内套注塑后冷却成型，取出内套轴线上的螺纹镶件；
d.磁环充磁：将步骤c中得到的磁环、内套的连接体置于充磁夹具内进行充磁，充池后得到磁性转子。磁环通过注塑制成，注塑过程中通过合理控制模具、喷嘴温度，使得磁环的韧性较好，在内套注塑成型时，磁环不易开裂，产品合格率高。
作为优选，在步骤b中，磁环注塑机上的喷嘴进行三段式连续进料：第一段为磁环模具流道用料，喷嘴温度为250℃-260℃，注塑压力90-100MPa；第二段为磁环用料，喷嘴温度为245℃-255℃，注塑压力85-90MPa；第三段为缩尾用料，喷嘴温度为210℃-230℃，注塑压力为82-85MPa。磁环注塑过程中通过三段式进料，喷嘴的温度就是进入模具内的物料温度，由于磁环模具的温度低于喷嘴处物料温度，因此第一段进料温度较高，高出的热量被模具吸收，第二次、第三次进料温度逐步降低，模具内的磁环的上端、中间部位、下端的温度都趋于均匀，磁环内的各个部位应力分布均匀，同时在该温度下尼龙粉呈熔融状态且粘稠度最大、流动性适宜，能保证与钕铁硼粉粘结稳定（温度过低会导致尼龙粉没有完全熔融、与钕铁硼粉粘合性降低，温度过高会使得尼龙粉流动性过大，在重力作用下会流向磁环下端而导致分布不均匀）。
作为优选，磁环注塑机三段式进料的总时间为2.2s-2.7s，磁环模具三段进料后进行保压，保压压力为55-65MPa。
作为优选，在步骤c中，内套注塑机上的喷嘴进行四段式连续进料：第一段为内套模具流道用料，喷嘴温度为310℃-330℃，注塑压力125-145MPa；第二段为内套一次用料，喷嘴温度为305℃-325℃，注塑压力120-135MPa；第三段为内套二次用料，喷嘴温度为300℃-320℃，注塑压力115-125MPa；第四段为缩尾用料，喷嘴温度为285℃-315℃，注塑压力为110-120MPa。内套注塑温度分为四段，也是为了保持模腔内各个部位的温度均匀，确保磁环、内套各个部位的应力分布均匀。
作为优选，内套注塑时，内套模具置于旋转台上，旋转台以3.5-5.5rps的速度旋转。旋转台旋转，磁环也发生旋转，内套注塑时的温度高于磁环注塑温度，在该温度下，磁环内的尼龙会发生熔融，磁环转动时，在离心力的作用下，磁环内圈的尼龙会向外流动，最终使得磁环中尼龙量分布从内圈都外圈逐渐增大，磁环外圈强度、韧性都显著提高；由于磁环外圈直径大，当磁环内部存在内应力导致产生开裂趋势时，磁环外圈需要更大的粘结力用于克服该内应力，因此磁环外圈强度、韧性都提高有利于防止开裂。
作为优选，在步骤a中，尼龙粉过40目筛处理，钕铁硼粉过120目筛处理。
作为优选，在步骤c中，所述的内套成型物料为由70%的热塑性聚笨硫醚粉末和30%的玻璃纤维粉末混合而成。玻璃纤维粉末能增加内套的强度。
作为优选，内套成型物料装入内套注塑机前经过烘箱烘烤处理，烘烤温度120-140℃，烘烤时间4-6小时，烘烤后进行水分测试，要求内套成型物料内的含水量小于0.03%。
作为优选，在步骤d中，充磁夹具的充磁电容为1000uf，充磁电压为1980V-2020V，最大电流为23KA。
因此，本发明具有防止磁环开裂、提高磁性转子合格率的有益效果。
附图说明
图1为本磁性转子的结构示意图。
图中：磁环1、内套2、螺纹3。
具体实施方式
下面结合附图和具体实施方式对本发明作进一步描述：
实施例1：一种怠速马达用磁性转子制造方法，包括以下步骤：按以下质量百分比称取各组分：85%的钕铁硼粉、10%的尼龙粉、2%的骨粉、2.5%的二丙醇、0.5%的氯化钠，尼龙粉过40目筛处理，钕铁硼粉过120目筛处理，将上述各组分放入搅拌机中搅拌混合得到混合料；将混合料放入磁环注塑机内，通过磁环注塑机上的喷嘴将混合料挤入磁环模具内，磁环模具温度为60℃，磁环注塑机上的喷嘴进行三段式连续进料：第一段为磁环模具流道用料，喷嘴温度为250℃，注塑压力90MPa；第二段为磁环用料，喷嘴温度为245℃，注塑压力85MPa；第三段为缩尾用料，喷嘴温度为210℃，注塑压力为82MPa，磁环注塑机三段式进料的总时间为2.2s，磁环模具三段进料后进行保压，保压压力为55MPa，保压后冷却成型；将内套成型物料装入内套注塑机内，内套成型物料为由70%的热塑性聚笨硫醚和30%的玻璃纤维粉末混合而成，内套成型物料装入内套注塑机前经过烘箱烘烤处理，烘烤温度120℃，烘烤时间6小时，烘烤后进行水分测试，要求内套成型物料内的含水量小于0.03%，将成型后的磁环装入内套模具内，将螺纹镶件装入内套模具内，内套模具置于旋转台上，旋转台以3.5rps的速度旋转，内套模具温度为95℃，通过内套注塑机上的喷嘴将内套成型物料注入内套模具内，内套注塑机上的喷嘴进行四段式连续进料：第一段为内套模具流道用料，喷嘴温度为310℃，注塑压力125MPa；第二段为内套一次用料，喷嘴温度为305℃，注塑压力120MPa；第三段为内套二次用料，喷嘴温度为300℃，注塑压力115MPa；第四段为缩尾用料，喷嘴温度为285℃，注塑压力为110MPa，内套注塑后冷却成型，取出内套轴线上的螺纹镶件；磁环、内套的连接体置于充磁夹具内进行充磁，充磁夹具的充磁电容为1000uf，充磁电压为1980V，最大电流为23KA，充池后得到磁性转子。
实施例2：一种怠速马达用磁性转子制造方法，包括以下步骤：按以下质量百分比称取各组分：90%的钕铁硼粉、6%的尼龙粉、1.5%的骨粉、1.5%的二丙醇、1%的氯化钠，尼龙粉过40目筛处理，钕铁硼粉过120目筛处理，将上述各组分放入搅拌机中搅拌混合得到混合料；将混合料放入磁环注塑机内，通过磁环注塑机上的喷嘴将混合料挤入磁环模具内，磁环模具温度为70℃，磁环注塑机上的喷嘴进行三段式连续进料：第一段为磁环模具流道用料，喷嘴温度为260℃，注塑压力100MPa；第二段为磁环用料，喷嘴温度为255℃，注塑压力90MPa；第三段为缩尾用料，喷嘴温度为230℃，注塑压力为85MPa，磁环注塑机三段式进料的总时间为2.7s，磁环模具三段进料后进行保压，保压压力为65MPa，保压后冷却成型；将内套成型物料装入内套注塑机内，内套成型物料为由70%的热塑性聚笨硫醚和30%的玻璃纤维粉末混合而成，内套成型物料装入内套注塑机前经过烘箱烘烤处理，烘烤温度140℃，烘烤时间4小时，烘烤后进行水分测试，要求内套成型物料内的含水量小于0.03%，将成型后的磁环装入内套模具内，将螺纹镶件装入内套模具内，内套模具置于旋转台上，旋转台以5.5rps的速度旋转，内套模具温度为110℃，通过内套注塑机上的喷嘴将内套成型物料注入内套模具内，内套注塑机上的喷嘴进行四段式连续进料：第一段为内套模具流道用料，喷嘴温度为330℃，注塑压力145MPa；第二段为内套一次用料，喷嘴温度为325℃，注塑压力135MPa；第三段为内套二次用料，喷嘴温度为320℃，注塑压力125MPa；第四段为缩尾用料，喷嘴温度为315℃，注塑压力为120MPa，内套注塑后冷却成型，取出内套轴线上的螺纹镶件；磁环、内套的连接体置于充磁夹具内进行充磁，充磁夹具的充磁电容为1000uf，充磁电压为2020V，最大电流为23KA，充池后得到磁性转子。
实施例3：一种怠速马达用磁性转子制造方法，包括以下步骤：按以下质量百分比称取各组分：90%的钕铁硼粉、5%的尼龙粉、1.8%的骨粉、2.4%的二丙醇、0.8%的氯化钠，尼龙粉过40目筛处理，钕铁硼粉过120目筛处理，将上述各组分放入搅拌机中搅拌混合得到混合料；将混合料放入磁环注塑机内，通过磁环注塑机上的喷嘴将混合料挤入磁环模具内，磁环模具温度为65℃，磁环注塑机上的喷嘴进行三段式连续进料：第一段为磁环模具流道用料，喷嘴温度为255℃，注塑压力95MPa；第二段为磁环用料，喷嘴温度为250℃，注塑压力88MPa；第三段为缩尾用料，喷嘴温度为220℃，注塑压力为83MPa，磁环注塑机三段式进料的总时间为2.5s，磁环模具三段进料后进行保压，保压压力为60MPa，保压后冷却成型；将内套成型物料装入内套注塑机内，内套成型物料为由70%的热塑性聚笨硫醚和30%的玻璃纤维粉末混合而成，内套成型物料装入内套注塑机前经过烘箱烘烤处理，烘烤温度130℃，烘烤时间5小时，烘烤后进行水分测试，要求内套成型物料内的含水量小于0.03%，将成型后的磁环装入内套模具内，将螺纹镶件装入内套模具内，内套模具置于旋转台上，旋转台以4.2rps的速度旋转，内套模具温度为100℃，通过内套注塑机上的喷嘴将内套成型物料注入内套模具内，内套注塑机上的喷嘴进行四段式连续进料：第一段为内套模具流道用料，喷嘴温度为320℃，注塑压力135MPa；第二段为内套一次用料，喷嘴温度为315℃，注塑压力130MPa；第三段为内套二次用料，喷嘴温度为310℃，注塑压力120MPa；第四段为缩尾用料，喷嘴温度为300℃，注塑压力为115MPa，内套注塑后冷却成型，取出内套轴线上的螺纹镶件；磁环、内套的连接体置于充磁夹具内进行充磁，充磁夹具的充磁电容为1000uf，充磁电压为2000V，最大电流为23KA，充池后得到磁性转子。
通过上述实施例制得的磁性转子中的磁环应力均匀，不易开裂，合格率高。

Claims (9)

1.一种怠速马达用磁性转子制造方法，其特征是，包括以下步骤：
a. 磁环注塑配料：按以下质量百分比称取各组分：85%-90%的钕铁硼粉、5%-10%的尼龙粉、1.5%-2%的骨粉、1%-2.5%的二丙醇、0.5%-1%的氯化钠，将上述各组分放入搅拌机中搅拌混合得到混合料；
b.磁环成型：将混合料放入磁环注塑机内，通过磁环注塑机上的喷嘴将混合料挤入磁环模具内，磁环模具温度为60℃-70℃，磁环注塑机上的喷嘴处温度为210℃-260℃，磁环注塑后冷却成型；
c.内套注塑成型：将内套成型物料装入内套注塑机内，将成型后的磁环装入内套模具内，将螺纹镶件装入内套模具内，通过内套注塑机上的喷嘴将内套成型物料注入内套模具内，内套模具温度为95℃-110℃，内套注塑机上的喷嘴处温度为285℃-330℃，内套注塑后冷却成型，取出内套轴线上的螺纹镶件；
d.磁环充磁：将步骤c中得到的磁环、内套的连接体置于充磁夹具内进行充磁，充池后得到磁性转子。
2.根据权利要求1所述的一种怠速马达用磁性转子制造方法，其特征是，在步骤b中，磁环注塑机上的喷嘴进行三段式连续进料：第一段为磁环模具流道用料，喷嘴温度为250℃-260℃，注塑压力90-100MPa；第二段为磁环用料，喷嘴温度为245℃-255℃，注塑压力85-90MPa；第三段为缩尾用料，喷嘴温度为210℃-230℃，注塑压力为82-85MPa。
3.根据权利要求2所述的一种怠速马达用磁性转子制造方法，其特征是，磁环注塑机三段式进料的总时间为2.2s-2.7s，磁环模具三段进料后进行保压，保压压力为55-65MPa。
4.根据权利要求2所述的一种怠速马达用磁性转子制造方法，其特征是，在步骤c中，内套注塑机上的喷嘴进行四段式连续进料：第一段为内套模具流道用料，喷嘴温度为310℃-330℃，注塑压力125-145MPa；第二段为内套一次用料，喷嘴温度为305℃-325℃，注塑压力120-135MPa；第三段为内套二次用料，喷嘴温度为300℃-320℃，注塑压力115-125MPa；第四段为缩尾用料，喷嘴温度为285℃-315℃，注塑压力为110-120MPa。
5.根据权利要求1或4所述的一种怠速马达用磁性转子制造方法，其特征是，内套注塑时，内套模具置于旋转台上，旋转台以3.5-5.5rps的速度旋转。
6.根据权利要求1所述的一种怠速马达用磁性转子制造方法，其特征是，在步骤a中，尼龙粉过40目筛处理，钕铁硼粉过120目筛处理。
7.根据权利要求1所述的一种怠速马达用磁性转子制造方法，其特征是，在步骤c中，所述的内套成型物料为由70%的热塑性聚笨硫醚粉末和30%的玻璃纤维粉末混合而成。
8.根据权利要求1或7所述的一种怠速马达用磁性转子制造方法，其特征是，内套成型物料装入内套注塑机前经过烘箱烘烤处理，烘烤温度120-140℃，烘烤时间4-6小时，烘烤后进行水分测试，要求内套成型物料内的含水量小于0.03%。
9.根据权利要求1所述的一种怠速马达用磁性转子制造方法，其特征是，在步骤d中，充磁夹具的充磁电容为1000uf，充磁电压为1980V-2020V，最大电流为23KA。
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107344236A (zh) * 2017-06-21 2017-11-14 徐州明润磁材有限公司 一种微型电机转子的制造方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101058224A (zh) * 2006-04-18 2007-10-24 邱国光 轮叶与转子组装之工艺方法及依据该方法制成的产品
CN102408230A (zh) * 2011-09-23 2012-04-11 横店集团东磁股份有限公司 一种铁氧体注塑成型颗粒料及其制备方法
CN103107648A (zh) * 2008-01-11 2013-05-15 台达电子工业股份有限公司 风扇及其马达
CN103332936A (zh) * 2012-11-21 2013-10-02 横店集团东磁股份有限公司 注射挤压成型烧结永磁铁氧体辐射环的制备方法
CN105034243A (zh) * 2015-07-10 2015-11-11 彭晓领 静磁场中磁性复合材料的注射成型制备方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101058224A (zh) * 2006-04-18 2007-10-24 邱国光 轮叶与转子组装之工艺方法及依据该方法制成的产品
CN103107648A (zh) * 2008-01-11 2013-05-15 台达电子工业股份有限公司 风扇及其马达
CN102408230A (zh) * 2011-09-23 2012-04-11 横店集团东磁股份有限公司 一种铁氧体注塑成型颗粒料及其制备方法
CN103332936A (zh) * 2012-11-21 2013-10-02 横店集团东磁股份有限公司 注射挤压成型烧结永磁铁氧体辐射环的制备方法
CN105034243A (zh) * 2015-07-10 2015-11-11 彭晓领 静磁场中磁性复合材料的注射成型制备方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107344236A (zh) * 2017-06-21 2017-11-14 徐州明润磁材有限公司 一种微型电机转子的制造方法
CN107344236B (zh) * 2017-06-21 2019-06-14 徐州明润磁材有限公司 一种微型电机转子的制造方法

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