WO2021196676A1 - 变压器矽钢片堆叠焊接方法 - Google Patents

变压器矽钢片堆叠焊接方法 Download PDF

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Publication number
WO2021196676A1
WO2021196676A1 PCT/CN2020/132702 CN2020132702W WO2021196676A1 WO 2021196676 A1 WO2021196676 A1 WO 2021196676A1 CN 2020132702 W CN2020132702 W CN 2020132702W WO 2021196676 A1 WO2021196676 A1 WO 2021196676A1
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Prior art keywords
silicon steel
welding
transformer
stacking
steel sheets
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PCT/CN2020/132702
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English (en)
French (fr)
Inventor
秦江勋
吴小飞
唐庆凤
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南京安盛电子有限公司
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Publication of WO2021196676A1 publication Critical patent/WO2021196676A1/zh

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Classifications

    • 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
    • H01F41/0233—Manufacturing of magnetic circuits made from sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/0026—Arc welding or cutting specially adapted for particular articles or work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/02—Seam welding; Backing means; Inserts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/32—Accessories

Definitions

  • the invention belongs to the technical field of application of transformer silicon steel sheets, and specifically relates to a method for stacking and welding transformer silicon steel sheets.
  • Transformer is a device that uses the principle of electromagnetic induction to change the AC voltage.
  • the main components are the primary coil, the secondary coil and the iron core (magnetic core).
  • the main functions are: voltage transformation, current transformation, impedance transformation, isolation, voltage stabilization (magnetic saturation transformer), etc. According to the purpose, it can be divided into: power transformer and special transformer (electric furnace transformer, rectifier transformer, power frequency test transformer, voltage regulator , Mining transformers, audio transformers, intermediate frequency transformers, high frequency transformers, impact transformers, instrument transformers, electronic transformers, reactors, transformers, etc.).
  • Silicon steel sheet it is a kind of ferrosilicon soft magnetic alloy with very low carbon content. Generally, the silicon content is 0.5 ⁇ 4.5%. The addition of silicon can increase the resistivity and maximum permeability of iron, and reduce the coercive force and iron core. Loss (iron loss) and magnetic aging.
  • the silicon steel sheet is an important component of the transformer. It needs to be assembled and stacked during production. However, the existing production methods have low production efficiency, poor quality and unstable quality after testing.
  • the present invention provides a method for stacking and welding transformer silicon steel sheets.
  • the objective of the present invention is to provide a method for stacking and welding transformer silicon steel sheets.
  • the preparation process is reasonable in design, and the production efficiency of silicon steel sheet stacking and welding is high.
  • the rationally designed production process has a low product scrap rate and also saves raw material production. Cost investment, the products produced are of high quality and stable quality.
  • the present invention provides a method for stacking and welding transformer silicon steel sheets, which includes the following steps, step 1, material preparation, preparation before production, and preparation of all raw materials required for product production.
  • step 2 Stack the E sheets, and stack the E-type silicon steel sheets according to the stack thickness of the holes in the transformer skeleton.
  • step 3. Assemble the E piece. Put the stacked E-shaped silicon steel piece into the middle hole of the transformer frame. Pay attention to the installation direction not to be skewed, so as to avoid the silicon steel piece from damaging the enameled wire of the wire bud inside the skeleton. Disconnected.
  • Step 5 Stacking and assembling the I-type silicon steel sheet, stack the I-type silicon steel sheet according to the stacking thickness of the E-type silicon steel sheet, and then place it on the E-type silicon steel sheet. Step 5. Weld the silicon steel sheet. Step 6. Weld inspection.
  • the transformer with stacked silicon steel sheets is placed in the welding jig, and the silicon steel sheets are welded using an argon arc welding machine.
  • the welding current is 60-70 amperes and the welding speed is 3 mm per unit.
  • the argon flow rate is 5-7 liters per minute, and the distance between the tungsten needle of the welding gun and the silicon steel sheet is controlled between 1.5-2 mm for welding.
  • the width of the welding seam in the step 6 is required to be 2.5-3 mm, and the welding seam is at the joining line of the E piece and the I piece, straight without offset, and smooth and bright.
  • the transformer with stacked silicon steel sheets is placed in the welding jig, and the silicon steel sheets are welded using an argon arc welding machine.
  • the welding current is 65 amperes and the welding speed is 3 millimeters per second.
  • the argon flow rate is 6.5 liters per minute, and the distance between the tungsten needle of the welding gun and the silicon steel sheet is controlled between 1.8-2 mm for welding.
  • the width of the weld in the step 6 is required to be 2.7-2.8 mm, and the weld is on the joining line of the E piece and the I piece, straight without offset, and smooth and bright.
  • the beneficial effects of the transformer silicon steel sheet stack welding method of the present invention are: its preparation process design is reasonable, the silicon steel sheet product stack welding production efficiency is high, and the rationally designed production process has a low product scrap rate. It also saves the cost of raw material production, and the produced products are of high quality and stable quality.
  • the method for stacking and welding transformer silicon steel sheets of the present invention includes the following steps: Step 1, material preparation, preparation work before production, and preparation of all raw materials required for product production. Step 2. Stack the E sheets, and stack the E-type silicon steel sheets according to the stack thickness of the holes in the transformer skeleton. Step 3. Assemble the E piece. Put the stacked E-shaped silicon steel piece into the middle hole of the transformer frame. Pay attention to the installation direction not to be skewed, so as to avoid the silicon steel piece from damaging the enameled wire of the wire bud inside the skeleton. Disconnected. Step 4.
  • Step 5 Stacking and assembling the I-type silicon steel sheet, stack the I-type silicon steel sheet according to the stacking thickness of the E-type silicon steel sheet, and then place it on the E-type silicon steel sheet. Step 5. Weld the silicon steel sheet. Step 6. Weld inspection.
  • the transformer with the stacked silicon steel sheets is placed in the welding jig, and the silicon steel sheets are welded using an argon arc welding machine, and the welding current is 60-70 amperes.
  • the speed is 3 mm per second, the argon flow rate is 5-7 liters per minute, and the distance between the tungsten needle of the welding gun and the silicon steel sheet is controlled between 1.5-2 mm for welding; and the width of the weld in step 6 is required to be 2.5-3 Mm, the welding seam is at the joint line of the E piece and the I piece, straight without offset, smooth and bright.
  • the method for stacking and welding transformer silicon steel sheets of the present invention includes the following steps: Step 1, material preparation, preparation work before production, and preparation of all raw materials required for product production. Step 2. Stack the E sheets, and stack the E-type silicon steel sheets according to the stack thickness of the holes in the transformer skeleton. Step 3. Assemble the E piece. Put the stacked E-shaped silicon steel piece into the middle hole of the transformer frame. Pay attention to the installation direction not to be skewed, so as to avoid the silicon steel piece from damaging the enameled wire of the wire bud inside the skeleton. Disconnected. Step 4.
  • Step 5 Stacking and assembling the I-type silicon steel sheet, stack the I-type silicon steel sheet according to the stacking thickness of the E-type silicon steel sheet, and then place it on the E-type silicon steel sheet. Step 5. Weld the silicon steel sheet. Step 6. Weld inspection.
  • the transformer with stacked silicon steel sheets is placed in the welding jig, and the silicon steel sheets are welded using an argon arc welding machine.
  • the welding current is 65 amperes
  • the welding speed is 3 millimeters per second
  • the gas flow rate is 6.5 liters per minute
  • the distance between the tungsten needle of the welding gun and the silicon steel sheet is controlled to be between 1.8-2 mm for welding; and the width of the welding seam in the step 6 is required to be 2.7-2.8 mm, and the welding seam is between the E slice and the I
  • the joint line of the film is straight without offset, smooth and bright.
  • the transformer silicon steel sheet stack welding method of Embodiment 1 or Embodiment 2 of the present invention has higher efficiency, better quality and more stable, and it will not happen due to the lack of tightness of the inserts.
  • the change of transformer parameters fundamentally solves the loosening of the silicon steel sheet caused by the movement in the subsequent process after the transformer is inserted into the silicon steel sheet, resulting in no-load power consumption, higher no-load current, and transformer whistling during the finished transformer test. problem. Greatly reduce the loss caused by the scrap of the finished product, increase the yield of the finished product, and bring good economic benefits.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)

Abstract

一种变压器矽钢片堆叠焊接方法，包括以下步骤，步骤1、材料准备；步骤2、E片堆叠；步骤3、E片组装，将堆叠好的E型矽钢片装入变压器骨架的中孔中，注意装入方向不能偏移歪斜，以免矽钢片使得骨架里面绕制线苞的漆包线受损发生断线；步骤4、I片堆叠组装，按照E型矽钢片的叠厚，堆叠好I型矽钢片，再将其放置在E型矽钢片上；步骤5、矽钢片焊接；步骤6、焊缝检查。该变压器矽钢片堆叠焊接方法的有益效果在于：其制备工艺设计合理，矽钢片产品堆叠焊接生产效率高，同时合理设计的生产工艺，产品报废率底，也节约了原材料生产成本投入，所制得的产品品质优、品质稳定。

Description

变压器矽钢片堆叠焊接方法 技术领域
本发明属于变压器矽钢片应用技术领域，具体涉及变压器矽钢片堆叠焊接方法。
背景技术
变压器(Transformer)是利用电磁感应的原理来改变交流电压的装置，主要构件是初级线圈、次级线圈和铁芯(磁芯)。主要功能有：电压变换、电流变换、阻抗变换、隔离、稳压(磁饱和变压器)等，按用途可以分为：电力变压器和特殊变压器(电炉变、整流变、工频试验变压器、调压器、矿用变、音频变压器、中频变压器、高频变压器、冲击变压器、仪用变压器、电子变压器、电抗器、互感器等)。
矽钢片，它是一种含碳极低的硅铁软磁合金，一般含硅量为0.5～4.5％，加入硅可提高铁的电阻率和最大磁导率，降低矫顽力、铁芯损耗(铁损)和磁时效。矽钢片是变压器的重要组成部件，生产时需要进行组装堆叠处理，但是现有的生产方法，其生产效率低，经检测品质差、不稳定等。
因此，基于上述问题，本发明提供变压器矽钢片堆叠焊接方法。
发明内容
发明目的：本发明的目的是提供变压器矽钢片堆叠焊接方法，其制备工艺设计合理，矽钢片产品堆叠焊接生产效率高，同时合理设计的生产工艺，产品报废率底，也节约了原材料生产成本投入，所制得的产品品质优、品质稳定。
技术方案：本发明提供变压器矽钢片堆叠焊接方法，包括以下步骤，步骤1、材料准备，生产前的准备工作，申领产品生产时所需的所有原材料备产。步骤2、E片堆叠，按照变压器骨架中孔的叠厚进行E型矽钢片的堆叠。步骤3、E片组装，将堆叠好的E型矽钢片装入变压器骨架的中孔中，注意装入方向不能偏移歪斜，以免矽钢片使得骨架里面绕制线苞的漆包线受损发生断线。步骤4、I片堆叠组装，按照E型矽钢片的叠厚，堆叠好I型矽钢片，再将其放置在E型矽钢片上。步骤5、矽钢片焊接。步骤6、焊缝检查。
本技术方案的，所述步骤5中将堆叠好矽钢片的变压器放置到焊接治具中， 使用氩弧焊机对矽钢片就进行焊接，焊接电流60-70安培，焊接速度3毫米每秒，氩气流量5-7升每分钟，焊枪钨针与矽钢片的距离控制在1.5-2毫米之间进行焊接。
本技术方案的，所述步骤6中焊缝宽度要求在2.5-3毫米，焊缝在E片和I片结合线，笔直无偏移，平滑明亮。
本技术方案的，所述步骤5中将堆叠好矽钢片的变压器放置到焊接治具中，使用氩弧焊机对矽钢片就进行焊接，焊接电流65安培，焊接速度3毫米每秒，氩气流量6.5升每分钟，焊枪钨针与矽钢片的距离控制在1.8-2毫米之间进行焊接。
本技术方案的，所述步骤6中焊缝宽度要求在2.7-2.8毫米，焊缝在E片和I片结合线，笔直无偏移，平滑明亮。
与现有技术相比，本发明的变压器矽钢片堆叠焊接方法的有益效果在于：其制备工艺设计合理，矽钢片产品堆叠焊接生产效率高，同时合理设计的生产工艺，产品报废率底，也节约了原材料生产成本投入，所制得的产品品质优、品质稳定。
具体实施方式
下面结合具体实施例，进一步阐明本发明。
实施例一
本发明的变压器矽钢片堆叠焊接方法，包括以下步骤，步骤1、材料准备，生产前的准备工作，申领产品生产时所需的所有原材料备产。步骤2、E片堆叠，按照变压器骨架中孔的叠厚进行E型矽钢片的堆叠。步骤3、E片组装，将堆叠好的E型矽钢片装入变压器骨架的中孔中，注意装入方向不能偏移歪斜，以免矽钢片使得骨架里面绕制线苞的漆包线受损发生断线。步骤4、I片堆叠组装，按照E型矽钢片的叠厚，堆叠好I型矽钢片，再将其放置在E型矽钢片上。步骤5、矽钢片焊接。步骤6、焊缝检查。
进一步优选的，本技术方案的，所述步骤5中将堆叠好矽钢片的变压器放置到焊接治具中，使用氩弧焊机对矽钢片就进行焊接，焊接电流60-70安培，焊接速度3毫米每秒，氩气流量5-7升每分钟，焊枪钨针与矽钢片的距离控制在1.5-2毫米之间进行焊接；及所述步骤6中焊缝宽度要求在2.5-3毫米，焊缝在E片和I片结合线，笔直无偏移，平滑明亮。
实施例二
本发明的变压器矽钢片堆叠焊接方法，包括以下步骤，步骤1、材料准备，生产前的准备工作，申领产品生产时所需的所有原材料备产。步骤2、E片堆叠，按照变压器骨架中孔的叠厚进行E型矽钢片的堆叠。步骤3、E片组装，将堆叠好的E型矽钢片装入变压器骨架的中孔中，注意装入方向不能偏移歪斜，以免矽钢片使得骨架里面绕制线苞的漆包线受损发生断线。步骤4、I片堆叠组装，按照E型矽钢片的叠厚，堆叠好I型矽钢片，再将其放置在E型矽钢片上。步骤5、矽钢片焊接。步骤6、焊缝检查。
进一步优选的，所述步骤5中将堆叠好矽钢片的变压器放置到焊接治具中，使用氩弧焊机对矽钢片就进行焊接，焊接电流65安培，焊接速度3毫米每秒，氩气流量6.5升每分钟，焊枪钨针与矽钢片的距离控制在1.8-2毫米之间进行焊接；及所述步骤6中焊缝宽度要求在2.7-2.8毫米，焊缝在E片和I片结合线，笔直无偏移，平滑明亮。
本发明实施例一或实施例二的变压器矽钢片堆叠焊接方法，相较于现有的矽钢片插片工艺，效率更高，品质更好更稳定，不会因为插片不紧实发生变压器参数变化，从根本上解决变压器插完矽钢片后因为后续工序中的移动所造成的矽钢片松动，从而发生变压器成品测试时空载功耗，空载电流变高，以及变压器啸叫等问题。大大降低成品报废带来的损失，提高成品的良品率，带来很好的经济效益。
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，在不脱离本发明原理的前提下，还可以作出若干改进，这些改进也应视为本发明的保护范围。

Claims (5)

  1. 变压器矽钢片堆叠焊接方法，其特征在于：包括以下步骤，
    步骤1、材料准备，生产前的准备工作，申领产品生产时所需的所有原材料备产；
    步骤2、E片堆叠，按照变压器骨架中孔的叠厚进行E型矽钢片的堆叠；
    步骤3、E片组装，将堆叠好的E型矽钢片装入变压器骨架的中孔中，注意装入方向不能偏移歪斜，以免矽钢片使得骨架里面绕制线苞的漆包线受损发生断线；
    步骤4、I片堆叠组装，按照E型矽钢片的叠厚，堆叠好I型矽钢片，再将其放置在E型矽钢片上；
    步骤5、矽钢片焊接；
    步骤6、焊缝检查。
  2. 根据权利要求1所述的变压器矽钢片堆叠焊接方法，其特征在于：所述步骤5中将堆叠好矽钢片的变压器放置到焊接治具中，使用氩弧焊机对矽钢片就进行焊接，焊接电流60-70安培，焊接速度3毫米每秒，氩气流量5-7升每分钟，焊枪钨针与矽钢片的距离控制在1.5-2毫米之间进行焊接。
  3. 根据权利要求1所述的变压器矽钢片堆叠焊接方法，其特征在于：所述步骤6中焊缝宽度要求在2.5-3毫米，焊缝在E片和I片结合线，笔直无偏移，平滑明亮。
  4. 根据权利要求2所述的变压器矽钢片堆叠焊接方法，其特征在于：所述步骤5中将堆叠好矽钢片的变压器放置到焊接治具中，使用氩弧焊机对矽钢片就进行焊接，焊接电流65安培，焊接速度3毫米每秒，氩气流量6.5升每分钟，焊枪钨针与矽钢片的距离控制在1.8-2毫米之间进行焊接。
  5. 根据权利要求3所述的变压器矽钢片堆叠焊接方法，其特征在于：所述步骤6中焊缝宽度要求在2.7-2.8毫米，焊缝在E片和I片结合线，笔直无偏移，平滑明亮。
PCT/CN2020/132702 2020-03-30 2020-11-30 变压器矽钢片堆叠焊接方法 WO2021196676A1 (zh)

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