CN108559906A - A kind of main transformer for conversion welder core material - Google Patents
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
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- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/04—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering with simultaneous application of supersonic waves, magnetic or electric fields
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- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
- C21D1/25—Hardening, combined with annealing between 300 degrees Celsius and 600 degrees Celsius, i.e. heat refining ("Vergüten")
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- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
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- 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
- C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/10—Ferrous alloys, e.g. steel alloys containing cobalt
- C22C38/105—Ferrous alloys, e.g. steel alloys containing cobalt containing Co and Ni
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The present invention relates to inverter type welder technical fields, disclose a kind of main transformer for conversion welder core material, contain following element according to mass percent meter：Si accounts for 12.5 13.5%, B accounts for 8.5 9.5%, Mo accounts for 2.5 3.0%, Co accounts for 1.5 2.0%, Cu accounts for 0.8 1.0%, Ni accounts for 0.5 0.8%, remaining as Fe contents, increase the content of the nonmetalloid of small atomic weight, it also added Mo, Co and Ni, as ferromagnetic metal element, significantly improve the toughness of band, improve the anti-magnetic bias ability of iron core, reduce the remanent magnetism and coercivity of material, work in-process improves the process conditions of preparation, iron core winding and post-production efficiency obviously rise, improve the mechanical property of lumber recovery and band, with low high-frequency loss, high saturated magnetic induction, control magnetic hystersis loss.
Description
Technical field
The invention belongs to inverter type welder technical fields, and in particular to a kind of main transformer for conversion welder core material.
Background technology
" inversion " and " rectification " concept that be two opposite.Rectification is the process for direct current convert alternating current, and inverse
Change is then the process for direct current being changed into alternating current, is known as " inverter type welder " using the Arc Welding Power of inversion transformation technique.Inversion is welded
The course of work for cutting equipment is will to obtain a smoother direct current after three-phase or single-phase 50Hz industrial frequency ACs electric rectification, filtering
The direct current is become the alternating current of 15-100kHz by electricity, the inverter circuit being made of IGBT or field-effect tube, through intermediate frequency main transformer
After depressor decompression, rectifying and wave-filtering obtains (or the friendship of frequency needed for inversion output again of stable direct current output welding current again
Galvanic electricity).The control circuit of inversion welding and cutting device is made of given circuit and driving circuit etc., by voltage, current signal
Feedback is handled, and is realized complete machine loop control, is used pulse-width modulation PWM for the control technology of core, to obtain fast rapid pulse
The constant-current characteristics of width modulation and excellent welding technological effect.Inversion welding and cutting device strong antijamming capability, is not easy by network voltage
The influence of fluctuation and temperature change.Traditional welding and cutting device uses AC power, per second since electric current and voltage direction frequently change
Clock electric arc will extinguish and ignite 100-120 times again, and electric arc is unable to continuous-stable burning so that the workpiece heat time is longer, drop
The low intensity of weld seam, it is difficult to meet the requirement of high-quality welding.
The core component of inverter type welder is main transformer, and it is soft magnetic materials now to use iron core, can be to the outer of variation
Magnetic field is made rapidly accordingly, but is easy to be magnetized by externally-applied magnetic field again, demagnetization is easy after externally-applied magnetic field removes, iron core is by damaging
The heat that consumption generates is difficult to shed, and leading to transformer core, temperature rapid increase, and excessively high temperature can reduce its magnetism, can also
Cause debugging in process of producing product, detection, parameter setting difficulty larger.
Invention content
The purpose of the present invention is for existing problem, provide a kind of main transformer for conversion welder core material, carry
The high anti-magnetic bias ability of iron core, reduces the remanent magnetism and coercivity of material, has low high-frequency loss, high-saturation magnetic induction strong
Degree, controls magnetic hystersis loss.
The present invention is achieved by the following technical solutions：
A kind of main transformer for conversion welder core material contains following element according to mass percent meter：Si accounts for 12.5-
13.5%, B, which accounts for 8.5-9.5%, Mo and accounts for 2.5-3.0%, Co and account for 1.5-2.0%, Cu and account for 0.8-1.0%, Ni, accounts for 0.5-0.8%, remaining as
Fe contents, processing technology include the following steps：
（1）The iron block that refining obtains is added in intermediate frequency furnace and is heated to 1550-1600 DEG C, according to fusing point after iron block melts completely
It is gradually added other metals and nonmetallic, quick to stir 5-10 minutes after being smelted into liquid completely, detection conjunction after skimming from high to low
Golden composition adjustment is to providing content；
（2）Prepared refining agent is added into above-mentioned aluminium alloy, stirs 15-20 minutes, pulls dregs out, obtains melting master alloy
Liquid, by 18-20 millimeters of the master alloy liquid spray Cheng Kuanwei of thawing, the belt flake that thickness is 25-30 microns, then in wound core of magnetic
Single iron core of 50-55mm*30-35mm*25-30mm specifications is wound on machine,
（3）It is heat-treated in tube furnace after coiling iron core, under nitrogen protection atmosphere, the preannealing 30- at 480-500 DEG C
40 minutes, 60-80 minutes then are kept the temperature at 400-450 DEG C, 350-400 DEG C is naturally cooled to stove, carries out at horizontal magnetic anneal
Reason, magnetic field size is 200-210A, after temperature is reduced to 120-150 DEG C, removes magnetic field, Temperature fall.
As further improvement of these options, step（2）The middle refining agent used is by weight by following raw materials according
Mixing briquetting forms：11-13 parts of potassium chloride, 8-10 parts of sodium chloride, 6-8 parts of montmorillonite, 5-7 parts of zeolite, potassium fluoborate 3.0-3.5
Part, 2.5-3.0 parts of powdered carbon, 2.0-2.5 parts of silicon carbide, 1.5-2.0 parts of aluminium sodium fluoride, 1.2-1.5 parts of aluminium nitride, vanadium diboride
1.0-1.2 0.8-1.0 parts of part, zinc oxide.
The present invention has the following advantages compared with prior art：Hold to solve existing main transformer for conversion welder iron core
It is vulnerable to externally-applied magnetic field magnetization, demagnetization is easy after externally-applied magnetic field removes, the heat that iron core is generated by loss is difficult to shed, and is caused
Temperature rapid increase for transformer core, and excessively high temperature can reduce its magnetism, can also cause debugging in process of producing product,
The larger problem of detection, parameter setting difficulty, the present invention provides a kind of main transformer for conversion welder core material, allotments
Element and content increase the content of the nonmetalloid of small atomic weight, also added Mo, Co and Ni, as ferromagnetism gold
Belonging to element, hence it is evident that the toughness for improving band improves the anti-magnetic bias ability of iron core, reduces the remanent magnetism and coercivity of material,
The process conditions of preparation are improved in processing, iron core winding and post-production efficiency obviously rise, and improve lumber recovery and band
Mechanical property, there is low high-frequency loss, high saturated magnetic induction controls magnetic hystersis loss.
Specific implementation mode
With reference to specific embodiment, the present invention will be further described.
Embodiment 1
A kind of main transformer for conversion welder core material contains following element according to mass percent meter：Si accounts for 12.5%, B and accounts for
8.5%, Mo, which accounts for 2.5%, Co and accounts for 1.5%, Cu and account for 0.8%, Ni, accounts for 0.5%, and remaining as Fe contents, processing technology includes following step
Suddenly：
（1）The iron block that refining obtains is added in intermediate frequency furnace and is heated to 1550 DEG C, according to fusing point by height after iron block melts completely
Other metals and nonmetallic are gradually added to low, after being smelted into liquid completely, quickly stirring 5 minutes, alloying component is detected after skimming
It adjusts to regulation content；
（2）Prepared refining agent is added into above-mentioned aluminium alloy, stirs 15 minutes, pulls dregs out, obtains melting master alloy liquid,
By 18 millimeters of the master alloy liquid spray Cheng Kuanwei of thawing, then the belt flake that thickness is 25 microns is rolled up on magnetic core winding machine
It is coiled into single iron core of 50mm*30mm*25mm specifications,
（3）It is heat-treated in tube furnace after coiling iron core, under nitrogen protection atmosphere, preannealing 30 minutes at 480 DEG C,
Then 60 minutes being kept the temperature at 400 DEG C, 350 DEG C is naturally cooled to stove, carry out horizontal magnetic anneal processing, magnetic field size is 200A,
After temperature is reduced to 120 DEG C, magnetic field, Temperature fall are removed.
As further improvement of these options, step（2）The middle refining agent used is by weight by following raw materials according
Mixing briquetting forms：11 parts of potassium chloride, 8 parts of sodium chloride, 6 parts of montmorillonite, 5 parts of zeolite, 3.0 parts of potassium fluoborate, 2.5 parts of powdered carbon,
2.0 parts of silicon carbide, 1.5 parts of aluminium sodium fluoride, 1.2 parts of aluminium nitride, 1.0 parts of vanadium diboride, 0.8 part of zinc oxide.
Embodiment 2
A kind of main transformer for conversion welder core material contains following element according to mass percent meter：Si accounts for 13.0%, B and accounts for
9.0%, Mo, which accounts for 2.8%, Co and accounts for 1.8%, Cu and account for 0.9%, Ni, accounts for 0.6%, and remaining as Fe contents, processing technology includes following step
Suddenly：
（1）The iron block that refining obtains is added in intermediate frequency furnace and is heated to 1580 DEG C, according to fusing point by height after iron block melts completely
Other metals and nonmetallic are gradually added to low, after being smelted into liquid completely, quickly stirring 8 minutes, alloying component is detected after skimming
It adjusts to regulation content；
（2）Prepared refining agent is added into above-mentioned aluminium alloy, stirs 18 minutes, pulls dregs out, obtains melting master alloy liquid,
By 19 millimeters of the master alloy liquid spray Cheng Kuanwei of thawing, then the belt flake that thickness is 28 microns is rolled up on magnetic core winding machine
It is coiled into single iron core of 53mm*33mm*28mm specifications,
（3）It is heat-treated in tube furnace after coiling iron core, under nitrogen protection atmosphere, preannealing 35 minutes at 490 DEG C,
Then 70 minutes being kept the temperature at 430 DEG C, 380 DEG C is naturally cooled to stove, carry out horizontal magnetic anneal processing, magnetic field size is 205A,
After temperature is reduced to 135 DEG C, magnetic field, Temperature fall are removed.
As further improvement of these options, step（2）The middle refining agent used is by weight by following raw materials according
Mixing briquetting forms：12 parts of potassium chloride, 9 parts of sodium chloride, 7 parts of montmorillonite, 6 parts of zeolite, 3.3 parts of potassium fluoborate, 2.8 parts of powdered carbon,
2.3 parts of silicon carbide, 1.7 parts of aluminium sodium fluoride, 1.3 parts of aluminium nitride, 1.1 parts of vanadium diboride, 0.9 part of zinc oxide.
Embodiment 3
A kind of main transformer for conversion welder core material contains following element according to mass percent meter：Si accounts for 13.5%, B and accounts for
9.5%, Mo, which accounts for 3.0%, Co and accounts for 2.0%, Cu and account for 1.0%, Ni, accounts for 0.8%, and remaining as Fe contents, processing technology includes following step
Suddenly：
（1）The iron block that refining obtains is added in intermediate frequency furnace and is heated to 1600 DEG C, according to fusing point by height after iron block melts completely
Other metals and nonmetallic are gradually added to low, after being smelted into liquid completely, quickly stirring 10 minutes, alloying component is detected after skimming
It adjusts to regulation content；
（2）Prepared refining agent is added into above-mentioned aluminium alloy, stirs 20 minutes, pulls dregs out, obtains melting master alloy liquid,
By 20 millimeters of the master alloy liquid spray Cheng Kuanwei of thawing, then the belt flake that thickness is 30 microns is rolled up on magnetic core winding machine
It is coiled into single iron core of 55mm*35mm*30mm specifications,
（3）It is heat-treated in tube furnace after coiling iron core, under nitrogen protection atmosphere, preannealing 40 minutes at 500 DEG C,
Then 80 minutes being kept the temperature at 450 DEG C, 400 DEG C is naturally cooled to stove, carry out horizontal magnetic anneal processing, magnetic field size is 210A,
After temperature is reduced to 150 DEG C, magnetic field, Temperature fall are removed.
As further improvement of these options, step（2）The middle refining agent used is by weight by following raw materials according
Mixing briquetting forms：13 parts of potassium chloride, 10 parts of sodium chloride, 8 parts of montmorillonite, 7 parts of zeolite, 3.5 parts of potassium fluoborate, 3.0 parts of powdered carbon,
2.5 parts of silicon carbide, 2.0 parts of aluminium sodium fluoride, 1.5 parts of aluminium nitride, 1.2 parts of vanadium diboride, 1.0 parts of zinc oxide.
Comparative example 1
With differing only in for embodiment 1, the element composition of core material is adjusted to：Si, which accounts for 10.5%, B and accounts for 7.5%, Mo, to be accounted for
2.5%, Co, which accounts for 1.5%, Cu and accounts for 0.8%, Ni, accounts for 0.5%, and remaining as Fe contents, remaining is remained unchanged.
Comparative example 2
With differing only in for embodiment 2, Mo the and Co elements in core material are replaced with to the Pb elements of equivalent, remaining guarantor
It holds constant.
Embodiment 3
With differing only in for embodiment 3, in annealing process, is annealed with the speed of 30-40 DEG C of cooling per minute, omit horizontal magnetic and move back
Fiery processing step, remaining is consistent.
Contrast test
Core material is prepared using the method for embodiment 1-3 and comparative example 1-3 respectively, measures the static magnetic of each group core material
Energy and Dynamic magnetic property, the Dynamic magnetic property measuring instrument of wherein Dynamic magnetic property frequency of use range 10kHz-20kHz are surveyed
It is fixed, and as a control group with existing soft magnetic materials iron core, be compared, by data record as shown in table 1, table 2.
1 each group iron core static magnetic performance of table
| Project | Initial permeability（k） | Coercivity（A/m） | Remanent magnetism（T） | Saturation induction density（T） |
| Embodiment 1 | 3.563 | 3.3 | 0.752 | 1.602 |
| Embodiment 2 | 3.679 | 3.1 | 0.743 | 1.621 |
| Embodiment 3 | 3.612 | 3.2 | 0.748 | 1.613 |
| Comparative example 1 | 3.156 | 4.4 | 0.923 | 1.486 |
| Comparative example 2 | 3.241 | 4.1 | 0.879 | 1.512 |
| Comparative example 3 | 3.146 | 4.7 | 0.895 | 1.498 |
| Control group | 2.928 | 5.2 | 1.011 | 1.449 |
2 each group iron core Dynamic magnetic property of table
| Project | Initial permeability（k） | Coercivity（A/m） | Remanent magnetism（mT） | Saturation induction density（T） |
| Embodiment 1 | 4.75 | 1.21 | 12.45 | 2.56 |
| Embodiment 2 | 4.83 | 1.19 | 12.19 | 2.68 |
| Embodiment 3 | 4.81 | 1.20 | 12.26 | 2.62 |
| Comparative example 1 | 3.23 | 1.65 | 18.23 | 1.78 |
| Comparative example 2 | 3.42 | 1.47 | 16.89 | 1.86 |
| Comparative example 3 | 3.19 | 1.78 | 18.92 | 1.65 |
| Control group | 3.12 | 2.46 | 23.68 | 1.53 |
It can be found that by comparing：Core material prepared by the present invention improves the anti-magnetic bias ability of iron core, reduces the surplus of material
There is low high-frequency loss, high saturated magnetic induction to control magnetic hystersis loss for magnetic and coercivity.
Claims (2)
1. a kind of main transformer for conversion welder core material, which is characterized in that contain following member according to mass percent meter
Element：Si, which accounts for 12.5-13.5%, B and accounts for 8.5-9.5%, Mo and account for 2.5-3.0%, Co and account for 1.5-2.0%, Cu and account for 0.8-1.0%, Ni, to be accounted for
0.5-0.8%, remaining as Fe contents, processing technology includes the following steps：
（1）The iron block that refining obtains is added in intermediate frequency furnace and is heated to 1550-1600 DEG C, according to fusing point after iron block melts completely
It is gradually added other metals and nonmetallic, quick to stir 5-10 minutes after being smelted into liquid completely, detection conjunction after skimming from high to low
Golden composition adjustment is to providing content；
（2）Prepared refining agent is added into above-mentioned aluminium alloy, stirs 15-20 minutes, pulls dregs out, obtains melting master alloy
Liquid, by 18-20 millimeters of the master alloy liquid spray Cheng Kuanwei of thawing, the belt flake that thickness is 25-30 microns, then in wound core of magnetic
Single iron core of 50-55mm*30-35mm*25-30mm specifications is wound on machine,
（3）It is heat-treated in tube furnace after coiling iron core, under nitrogen protection atmosphere, the preannealing 30- at 480-500 DEG C
40 minutes, 60-80 minutes then are kept the temperature at 400-450 DEG C, 350-400 DEG C is naturally cooled to stove, carries out at horizontal magnetic anneal
Reason, magnetic field size is 200-210A, after temperature is reduced to 120-150 DEG C, removes magnetic field, Temperature fall.
2. a kind of main transformer for conversion welder core material as described in claim 1, which is characterized in that step（2）Middle use
Refining agent by weight by following raw materials according mixing briquetting form：11-13 parts of potassium chloride, 8-10 parts of sodium chloride, montmorillonite 6-8
Part, 5-7 parts of zeolite, 3.0-3.5 parts of potassium fluoborate, 2.5-3.0 parts of powdered carbon, 2.0-2.5 parts of silicon carbide, aluminium sodium fluoride 1.5-2.0
Part, 1.2-1.5 parts of aluminium nitride, 1.0-1.2 parts of vanadium diboride, 0.8-1.0 parts of zinc oxide.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117230361A (en) * | 2023-09-20 | 2023-12-15 | 国网智能电网研究院有限公司 | Iron-based nanocrystalline strip and preparation method and application thereof |
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| CN117230361A (en) * | 2023-09-20 | 2023-12-15 | 国网智能电网研究院有限公司 | Iron-based nanocrystalline strip and preparation method and application thereof |
| CN117230361B (en) * | 2023-09-20 | 2024-03-08 | 国网智能电网研究院有限公司 | Iron-based nanocrystalline strip and preparation method and application thereof |
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