CN104164645B - Method of manufacturing pressed part and steel sheet for press working - Google Patents
Method of manufacturing pressed part and steel sheet for press working Download PDFInfo
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- CN104164645B CN104164645B CN201410167849.8A CN201410167849A CN104164645B CN 104164645 B CN104164645 B CN 104164645B CN 201410167849 A CN201410167849 A CN 201410167849A CN 104164645 B CN104164645 B CN 104164645B
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- steel plate
- punch process
- silicon steel
- mould
- iron core
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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
- C21D1/62—Quenching devices
- C21D1/673—Quenching devices for die quenching
-
- 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
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
- C21D8/1244—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the heat treatment(s) being of interest
- C21D8/1255—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the heat treatment(s) being of interest with diffusion of elements, e.g. decarburising, nitriding
-
- 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
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
- C21D8/1277—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties involving a particular surface treatment
-
- 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
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
- C21D8/1294—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties involving a localized treatment
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
- C23C10/04—Diffusion into selected surface areas, e.g. using masks
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
- C23C10/06—Solid state diffusion of only metal elements or silicon into metallic material surfaces using gases
- C23C10/08—Solid state diffusion of only metal elements or silicon into metallic material surfaces using gases only one element being diffused
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
- C23C10/28—Solid state diffusion of only metal elements or silicon into metallic material surfaces using solids, e.g. powders, pastes
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
- C23C10/60—After-treatment
-
- 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
- C21D2221/00—Treating localised areas of an article
-
- 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
- C21D2261/00—Machining or cutting being involved
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- Engineering & Computer Science (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Thermal Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electromagnetism (AREA)
- Manufacturing & Machinery (AREA)
- Soft Magnetic Materials (AREA)
- Punching Or Piercing (AREA)
- Manufacturing Of Steel Electrode Plates (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
Provided is a method of manufacturing a pressed part, which imparts excellent formability on a steel sheet, and the steel sheet for press working used in the manufacturing of the pressed part when the pressed part is manufactured with a silicon steel sheet. A manufacturing method includes a process of siliconizing a low-silicon steel sheet (14) which becomes a material of a high-silicon steel sheet in a state where a surface of a to-be-pressed portion (16) is coated with a mask (30); and a process of pressing the to-be-pressed portion (16) of the siliconized high-silicon steel sheet as a workpiece. Since the surface of the to-be-pressed portion (16) is coated with the mask (30) and the siliconizing treatment is performed, it is possible to obtain the high-silicon steel sheet in which the to-be-pressed portion (16) is softer than other portions. Since the high-silicon steel sheet is pressed, the steel sheet is excellent in formability during the press working.
Description
The present invention advocates the Japanese patent application 2013-103763 public affairs based on May 16th, 2013 in Japanese publication
The priority of report.During the full content of the Japanese publication is by reference to being applied at this specification.
Technical field
The present invention relates to the manufacture method of punch process product such as a kind of motor iron core, transformer core of utilization silicon steel plate and
For the punch process steel plate of the manufacture method.
Background technology
In the iron cores such as motor iron core, transformer core, as the low iron loss of its characteristic requirements, high flux density.Especially, make
To meet the material of low iron loss, the silicon steel plate that Si amounts are calculated as more than 4.0% with weight % is widely used.As obtaining the silicon steel plate
Method, it is known to siliconising process, direct casting etc. (referenced patent document 1).
Patent document 1：Japanese Unexamined Patent Publication 2000-178699
Silicon steel plate has excellent low iron loss characteristic, but Si amounts more increase steel plate and become harder, adding during punch process
The impatient acute decline of work.Also, because steel plate is hardened, thus be accordingly used in the moulds such as drift, the punch die of punch process easily abrasion and damage
Wound, the frequency of maintenance increase of mould.
The content of the invention
The present invention is completed in light of this situation, be its object is to provide a kind of manufacture and is added using the punching press of silicon steel plate
The manufacture method of the punch process product of the excellent workability of steel plate and the punch process steel plate for the method during work product.
One embodiment of the present invention is related to a kind of manufacture method of punch process product.The manufacture method of punch process product
Include：Using the silicon steel plate for answering the greater than other parts of punch process softer as machined material, punch process is answered to this
Position carry out the operation of punch process.
According to which, because the softer silicon steel plate of the greater than other parts of correspondence punch process carries out punch process,
Therefore the excellent workability of steel plate during punch process.
Also, the manufacture method of the punch process product involved by another embodiment of the present invention includes：It is high to becoming
The low-silicon steel plate of the sheet stock of silicon steel plate carries out the operation of punch process；And low-silicon steel plate is carried out siliconising process be used as
The siliconising operation of high silicon steel plate.
According to which, due to contrast the high low-silicon steel plate that silicon steel plate is softer and machinability is good carry out punch process it
After carry out siliconising process, therefore the excellent workability of steel plate during punch process.
Also, one embodiment of the present invention is related to a kind of punch process steel plate.In punch process steel plate, silicon steel
Plate answers the greater than other parts of punch process softer.
According to which, due to answering the greater than other parts of punch process softer, therefore steel plate during punch process
Excellent workability.
The manufacture method of the punch process product involved by a kind of embodiment of the invention, steel plate during punch process
Excellent workability.
Punch process steel plate involved by a kind of embodiment of the invention, steel plate during punch process is processed
Property is excellent.
Description of the drawings
Fig. 1 is the punch process product being denoted as to obtain involved by the 1st embodiment and the machined material for using
High silicon steel plate top view.
Fig. 2 is to be denoted as the intermediate step of the manufacture method involved by the 1st embodiment and low-silicon steel plate is oozed
The side view cutaway drawing of the state of silicon process.
Fig. 3 is to be denoted as the intermediate step of the manufacture method involved by the 1st embodiment and high silicon steel plate is rushed
The side view cutaway drawing of the state of pressure processing.
Fig. 4 is to be denoted as the intermediate step of the manufacture method involved by the 2nd embodiment and high silicon steel plate is lost
The side view cutaway drawing of the state at quarter.
Fig. 5 is to be denoted as the intermediate step of the manufacture method involved by the 2nd embodiment and high silicon steel plate is rushed
The side view cutaway drawing of the state of pressure processing.
Fig. 6 is to be denoted as the intermediate step of the manufacture method involved by the 3rd embodiment and use desiliconization steel pair
The side view cutaway drawing of the state that high silicon steel plate is heat-treated.
Fig. 7 is the figure of the intermediate step for illustrating the manufacture method involved by the 4th embodiment.
In figure：10- machined materials, 14- low-silicon steel plates, 16- answers the position (processing reservations) of punch process, and 18- is high
Silicon steel plate, 30- masks.
Specific embodiment
(the 1st embodiment)
The punch process product obtained by the manufacture method involved by the 1st embodiment are made up of high silicon steel plate.High silicon steel
Plate is in terms of weight % at least containing more than 4.0% Si.Si is the effective element of the improvement to iron loss characteristic, if its content is
More than 4.0% is then obtained excellent low iron loss characteristic.On the other hand, if the content of Si is more than 4.0%, its content more increases
Many steel plates become really up to the mark, and machinability during punch process is reduced and becomes problem.High silicon steel plate is processed by siliconising described later
Or directly casting etc. is obtained.The higher limit of Si is not particularly limited, but if more than 7.0%, saturation flux density shows
Writing reduces, therefore preferably less than 7.0%.Also, the lower limit for Si, if its content is more than 6.0%, is obtained more excellent
Different low iron loss characteristic, therefore preferably more than 6.0%.
Composition and its number range beyond the Si of high silicon steel plate is not particularly limited, as long as steel making technology known to Jing
Available composition, number range.With regard to the composition beyond Si, number range, if enumerating one example, in terms of weight %
Containing following component, i.e. C be less than 0.01%, Mn be less than 0.5%, P be less than 0.01%, S be less than 0.01%, it is balance of
Fe and inevitable impurity.In addition, do not hinder in the range of iron loss characteristic, machinability can containing Al, Cr, Mo, W, V,
The alloying elements such as Ti, Sb.
The machined material 10 that Fig. 1 is denoted as the punch process product in order to obtain involved by the 1st embodiment and uses
High silicon steel plate 18.Machined material 10 is shaped to prespecified shape by punch process product by punch process such as punching processings
Shape is obtaining.Hereinafter, the situation to obtaining the rotor core of motor as punch process product is illustrated.In Fig. 1, with two point
Line should become the position 12 of its profile when representing and overlooking rotor core.
In manufacture method involved by 1st embodiment, first, the low-silicon steel plate of the raw material to becoming high silicon steel plate 18
Carry out siliconising to process to obtain high silicon steel plate 18.Low-silicon steel plate is in terms of weight % containing the Si less than 4.0%.Low-silicon steel plate its
His composition and number range are not particularly limited, as long as the available composition of steel making technology known to Jing, number range.Separately
Outward, for low-silicon steel plate Si higher limit, when due to its content being less than 3.5%, machinability becomes good, therefore preferably
Less than 3.5%.
Siliconising is processed and carried out using chemical vapour deposition technique (CVD).The siliconising is processed and is carried out as follows：Including becoming Si
The SiCl in source4、SiH4Steel plate is configured in non-oxidizing atmosphere etc. unstrpped gas, steel plate is heated to into set point of temperature, and by steel plate
It is maintained at the state of temperature.Thus, Si is permeated in the top layer of steel plate, and the Si on the steel plate top layer spreads to thickness of slab direction.Use
SiCl4During as Si sources, the heating-up temperature of the steel plate is, for example, 1023 DEG C～1230 DEG C.
Fig. 2 represents the state that siliconising process is carried out to low-silicon steel plate 14.In example illustrated, illustrate and be arranged within the chamber
Objective table 20 on configure low-silicon steel plate 14, the one side in the thickness of slab direction of low-silicon steel plate 14 carries out the state of siliconising process.
During siliconising is processed, at the position 16 (below, also known as process reservations 16) for answering punch process of low-silicon steel plate 14
Surface coverage mask 30.Processing reservations 16 said here refer to the position being plastically deformed during punch process.As punching press
Processing is punched out plus man-hour, and by the position of the point of a knife detrusion of the point of a knife and punch die of drift processing reservations 16 are become.
In example illustrated, for convenience of description, surrounded with double dot dash line and represent processing reservations 16.
Mask 30 is used and is formed with the Mechanical masks such as the metal forming of pattern set in advance.The pattern is formed as covering low silicon
The surface of the processing reservations 16 of steel plate 14, the surface for making position in addition is exposed.The Mechanical masks are with pure iron, silicon steel etc.
The ceramic material such as metal material or glass as raw material, to bear heating when siliconising is processed.
By using mask 30 siliconising process, make Si not it is masked 30 cover processing reservations 16 beyond other
Permeate in position, prevent Si from permeating in the processing reservations 16 for be coated with mask 30.That is, reservations 16 are processed not by siliconising,
Other positions beyond processing reservations 16 are by siliconising.Thus, can obtain processing the Si amounts of reservations 16 than portion in addition
The few high silicon steel plate 18 in position.Si amounts more increase steel plate and become harder, therefore it is softer than other positions to obtain processing reservations 16
High silicon steel plate 18.
Siliconising treatment conditions are adjusted to, and with the timing of weight %, make the Si of high silicon steel plate 18 becomes little in processing reservations 16
In 4.0%, at position in addition more than 4.0% is become.It is further preferred that siliconising treatment conditions are adjusted to, processing reservations are made
16 become less than 3.5%, and position in addition becomes more than 6.0%.Controlled siliconising treatment conditions include：Configuration steel
The retention time of the steel plate under the heating-up temperature of raw gas concentration, steel plate in the non-oxidizing atmosphere of plate, heated condition
Deng.
The processing reservations 16 of low-silicon steel plate 14 are extended along direction in the face of low-silicon steel plate 14.Will be predetermined with processing
When the orthogonal direction (i.e. direction in the face of low-silicon steel plate 14) of the bearing of trend in portion 16 is set to A directions, preferred mask 30 is in direction A
It is upper to cover than processing the broader scope of reservations 16.The coverage of the mask 30 is referred to and clip in direction a processing reservations
16 scope, in direction, the substantial middle position of A is configured with processing reservations 16.Thus, suppress to permeate in the Si on steel plate top layer
Processing reservations 16 are diffused to when spreading to thickness of slab direction, is not had high demands between machined material and mould during punch process and is determined
Position accuracy, therefore, it is possible to stably carry out punch process.If the coverage of the mask 30 is set to into such as more than 3.0mm,
Then fully suppress to diffuse to processing reservations 16.
Then, the high silicon steel plate 18 for obtaining will be processed as machined material 10 by siliconising, is entered to processing reservations 16
Row punch process is being shaped to the shape of rotor core.That is, carry out punch process to be shaped to set in advance to processing reservations 16
The shape of fixed punch process product.
Fig. 3 represents that the processing reservations 16 to machined material 10 carry out the state of punch process.In example illustrated,
The processing reservations 16 of machined material 10 are configured between the point of a knife 31a of drift 31 and the point of a knife 33a of punch die 33.If making drift
31 move up and down, then by drift 31 and point of a knife 31a, 33a of punch die 33, machined material 10 is sheared along processing reservations 16
Deform and be punched, the manufacturing press-molded products of rotor core shape are obtained.
Manufacture method according to involved by the 1st embodiment, due to correspondence punch process position 16 than other positions more
Soft high silicon steel plate 18 carries out punch process, therefore the excellent workability of steel plate during punch process.Also, due to answering punching press
The position 16 of processing is softer than other positions, thus be accordingly used in the moulds such as drift, the punch die of punch process it is not easy to wear and damage, drop
The frequency of maintenance of low mould.
(the 2nd embodiment)
In following embodiment, pair with the 1st embodiment in illustrate important document identical important document mark same-sign, and
Omit repeat specification.
In manufacture method involved by 2nd embodiment, first, using the low-silicon steel of the raw material for becoming high silicon steel plate 18
Plate 14 carries out siliconising and processes to obtain high silicon steel plate 18.During the siliconising is processed, not in the surface coverage mask of low-silicon steel plate 14, remove
It is identical with the content illustrated in the 1st embodiment beyond this.
Then, as shown in figure 4, to processing the high silicon steel plate 18 that obtains by siliconising, so that the surface of processing reservations 16
The mode coverage mask 30 that exposes simultaneously is etched.Mask 30 is used and is pre-formed figuratum Mechanical masks.The pattern is formed
Expose and cover the surface at position in addition in surface to make the processing reservations 16 of high silicon steel plate 18.
It is etched through FeCl3Coating, atomization etc. etching solution etc. are carried out.As shown in figure 5, etching condition is adjusted to pass erosion
The processing reservations 16 for being engraved in high silicon steel plate 18 form recess 16a and are unlikely to the degree through the processing reservations 16.The quilt
The etching condition of adjustment includes being exposed to the time of etching solution or the species of etching solution etc..
By using the etching of mask 30, it is etched in the not masked 30 processing reservations 16 for covering, the opposing party
Face prevents the position being coated with beyond the processing reservations 16 of mask 30 to be etched.Thus, can obtain processing the plate of reservations 16
The thinner high silicon steel plate 18 in other positions of thickness rate.The thin position of thickness of slab becomes softer, therefore can obtain processing reservations 16
The high silicon steel plate 18 softer than other positions.That is, by using the etching of mask 30, the processing reservations 16 of high silicon steel plate 18 are made
Soften.
The etching of high silicon steel plate 18 is ranged preferably from direction a than the broader model of processing reservations 16 of high silicon steel plate 18
Enclose.The etching scope refers to the scope for clipping processing reservations 16 in direction a, and in direction, the substantial middle position of A is configured with
Processing reservations 16.Thus, setting accuracy is not had high demands between machined material and mould during punch process, therefore, it is possible to
Stably carry out punch process.
Also, if the thickness of slab at the position for having etched of high silicon steel plate 18 is set to into other positions of for example high silicon steel plate 18
Thickness of slab t t × 1/4 more than and t × 3/4 below, then can obtain reduce etching period while fully soften processing reservations
16 effect.
Then, it is identical with the 1st embodiment, using high silicon steel plate 18 as machined material 10, enter to processing reservations 16
Row punch process is being shaped to the shape of punch process product.
Manufacture method according to involved by the 2nd embodiment, it is identical with the 1st embodiment, steel plate during punch process
Excellent workability, and reduce the frequency of maintenance of mould.Also, by the portion for answering punch process for being etched in high silicon steel plate 18
Position 16 forms recess 16a, therefore, it is possible to pass through the position that naked eyes easily distinguish the position 16 for answering punch process, during punch process
Machined material and mould between contraposition work become light.
(the 3rd embodiment)
In manufacture method involved by 3rd embodiment, first, using the low-silicon steel of the raw material for becoming high silicon steel plate 18
Plate 14 carries out siliconising and processes to obtain high silicon steel plate 18.During the siliconising is processed, not in the surface coverage mask 30 of low-silicon steel plate 14,
It is identical with the content illustrated in the 1st embodiment in addition.
Then, as shown in fig. 6, making desiliconization steel 40 pre- with the processing for carrying out high silicon steel plate 18 of the siliconising process to obtain
The surface for determining portion 16 contacts and is heat-treated, so that Si spreads from high silicon steel plate 18 to desiliconization steel 40.
Desiliconization steel 40 for Si content steel fewer than high silicon steel material 18, for example by terms of weight % containing being less than
The low-silicon steel plate 14 of 4.0% Si is constituted.Desiliconization steel 40 are formed as covering the table of the processing reservations 16 of high silicon steel plate 18
Face.That is, desiliconization steel 40 are formed along the shape of the processing reservations 16 of high silicon steel plate 18.
Heat treatment is carried out as follows：Desiliconization steel 40 and high silicon steel plate 18 are configured in non-oxidizing atmosphere, desiliconization is used
Steel 40 and high silicon steel plate 18 are heated to set point of temperature, and desiliconization steel 40 and high silicon steel plate 18 are maintained at into the temperature shape
State.The heating-up temperature is set as the temperature that Si can spread from high silicon steel plate 18 to desiliconization steel 40, for example, 1000 DEG C～
1200℃。
Heat treatment by more than, the Si that can obtain contacting the processing reservations 16 of desiliconization steel 40 is measured than other portions
The few high silicon steel plate 18 in position.That is, by using the desiliconization heat treatment of steel 40, make the processing reservations 16 of high silicon steel plate 18 soft
Change.
Composition, the size of adjustment heat treatment condition and desiliconization steel 40 so that the Si of high silicon steel plate 18 is in terms of weight %,
Processing reservations 16 become less than 4.0%, and position in addition becomes more than 4.0%.It is further preferred that the adjustment such as heat treatment condition
For processing reservations 16 become less than 3.5%, and position in addition becomes more than 6.0%.Controlled heat treatment condition
Heating-up temperature including steel plate, heat in the state of retention time of steel plate etc..Also, controlled desiliconization steel 40
Composition for desiliconization steel 40 Si contents etc., Si measures that fewer Si is easier to be expanded from high silicon steel plate 18 to desiliconization steel 40
Dissipate.And the size of controlled desiliconization steel 40 is the thickness of the desiliconization steel 40 of the thickness of slab relative to high silicon steel plate 18
Deng its thickness is thicker, and Si from high silicon steel plate 18 to desiliconization steel 40 that can spread from amount more increases, and Si becomes easily diffusion.
Then, it is identical with the 1st embodiment, using high silicon steel plate 18 as machined material 10, enter to processing reservations 16
Row punch process is being shaped to the shape of punch process product.
Manufacture method according to involved by the 3rd embodiment, it is identical with the 1st embodiment, steel plate during punch process
Excellent workability, and the frequency of maintenance reduction of mould.
(the 4th embodiment)
In manufacture method involved by 4th embodiment, first, as shown in fig. 7, the raw material that high silicon steel plate 18 will be become
Low-silicon steel plate 14 as machined material 10, carry out punch process to be shaped to the shape of punch process product 19 set in advance
Shape.
Then, the low-silicon steel plate 14 for being shaped to the shape of punch process product is carried out into siliconising as raw material to process to obtain
High silicon steel plate 18.During the siliconising is processed, not in the surface coverage mask of low-silicon steel plate 14.During siliconising is processed, side in addition
Face is identical with the content illustrated in the 1st embodiment.
Manufacture method according to involved by the 4th embodiment, will be softer than high silicon steel plate 18 and machinability is good
Low-silicon steel plate 14 carries out carrying out siliconising process after punch process as machined material 10, therefore steel plate during punch process
Excellent workability.Also, punch process is carried out due to contrasting the softer low-silicon steel plate 14 of high silicon steel plate 18, punching press is thus be accordingly used in
The moulds such as drift, the punch die of processing are not easy to wear and damage, and the frequency of maintenance of mould is reduced.
More than, described the present invention according to embodiment, but embodiment simply illustrate the present invention principle,
Using.Also, in embodiment, in the range of without departing from present inventive concept specified in claim, can carry out all changeable
Shape example and the change of configuration.
In the respective embodiments described above, as the punch process product manufactured by manufacture method involved in the present invention exemplified with
The rotor core of motor, but be not restricted to that this, can be the iron core, or iron of the electrical equipments such as generator, transformer
Part beyond core.
In the respective embodiments described above, as siliconising processing spec using the method for CVD, but siliconising is processed and not limited
In the method using CVD.Process as the siliconising using additive method, such as described in WO2004/044251 publications,
Cladding constituent with Si as principal component can be coated low-silicon steel plate, and low-silicon steel plate is moved back in non-oxidative atmosphere
Fire.
In the respective embodiments described above, punching processing is illustrated as punch process, but punch process can be punching to be added
Bending machining, stretch process beyond work etc..
Above-mentioned 1st, in the 2nd embodiment, Mechanical masks are illustrated as mask 30, but as long as mask 30 can be covered
A part for surface of steel plate, for example, can be photoresist layer etc..When using photoresist layer as mask 30, will pass through
Photoetch method forms figuratum photoresist layer and is covered in steel plate.
In above-mentioned 2nd embodiment, siliconising process is not carried out in the surface coverage mask 30 of low-silicon steel plate 14, but such as
1st embodiment, also can carry out siliconising process in the surface coverage mask 30 of low-silicon steel plate 14, and etching is performed afterwards.Now,
The Si contents that reservations 16 can be obtained processing are fewer than other positions, and process the thin high silicon in other positions of thickness ratio of reservations 16
Steel plate 18.
In above-mentioned 2nd embodiment, etched after siliconising is processed, but also can be laggard what is etched
Row siliconising is processed.That is, as long as carrying out on the steel plate of the machined material 10 when as punch process so that processing reservations 16
The mode coverage mask 30 that exposes of surface come the operation that is etched, then process can be any the etching work procedure before and after for siliconising
When carry out.
Above-mentioned 2nd, in the 3rd embodiment, the method as high silicon steel plate 18 is obtained is carried out at siliconising to low-silicon steel plate 14
The method of reason is illustrated, but the method for obtaining high silicon steel plate 18 is not limited to siliconising process, it is possible to use known
Method.As the method, for example, can use direct casting, i.e., by multiple rollers etc. will containing with the identical of high silicon steel plate 18 into
The molten steel for dividing carries out cooling to obtain high silicon steel plate while being shaped to tabular.
In above-mentioned 1st embodiment, siliconising is not carried out to processing reservations 16 using mask 30 and other positions are carried out
Siliconising, but the method that siliconising is not carried out to processing reservations 16 is not limited to mask 30.Also, the above-mentioned 2nd, the 3rd embodiment party
In formula, using etching or desiliconization steel 40 processing reservations 16 are softened, but for softening the method for processing reservations 16
It is not limited to this.
Manufacture method involved in the present invention can carry out each operation in batches successively as the steel plate to regulation unit sizes
Technique also can carry out the continuous processing of each operation realize realizing as the steel band to continuous transmission.
Claims (12)
1. a kind of manufacture method of punch process product, it is characterised in that
Including：By the softer silicon steel of greater than other parts that the mould for motor iron core processing should be used to carry out punch process
Plate carries out punching press and adds as machined material to the position for answering punch process using the mould for motor iron core processing
The operation of work.
2. the manufacture method of punch process product according to claim 1, it is characterised in that
Including：Low-silicon steel plate to acting as the raw material of the high silicon steel plate of the machined material carries out the work of siliconising process
Sequence,
In the siliconising treatment process, not corresponding to carries out the position of punch process using the mould for motor iron core processing
Carry out siliconising and other positions are carried out with siliconising, make that processing should be punched out using the mould for motor iron core processing
The position that position is maintained than not being punched out processing is softer.
3. the manufacture method of punch process product according to claim 2, it is characterised in that
In the siliconising treatment process, siliconising process is carried out in the state of to the low-silicon steel plate mask film covering, wherein, it is described
Mask cover should use it is described for motor iron core process mould carry out punch process position surface and make in addition
The surface of part expose.
4. the manufacture method of the punch process product according to any one in claims 1 to 3, it is characterised in that
Including：The described of the steel plate as machined material is set to carry out using the mould for motor iron core processing
The operation that the position of punch process softens.
5. the manufacture method of punch process product according to claim 4, it is characterised in that
In the softening process, for the steel plate as machined material, so that described should carry out punching press using mould
Mode coverage mask that the surface at the position of processing is exposed and be etched.
6. the manufacture method of punch process product according to claim 4, it is characterised in that
In the softening process, for the steel plate as machined material, desiliconization steel are made to use mould with described
The surface at the position that tool carries out punch process contacts and is heat-treated, so that Si spreads from the steel plate to the desiliconization steel.
7. the manufacture method of the punch process product according to any one in claims 1 to 3, it is characterised in that
The Si contents at the position that should carry out punch process using the mould for motor iron core processing are fewer than other positions.
8. the manufacture method of the punch process product according to any one in claims 1 to 3, it is characterised in that
It is thin other positions of the thickness ratio at position of punch process should to be carried out using the mould for motor iron core processing.
9. a kind of manufacture method of punch process product, it is characterised in that include：
Low-silicon steel plate to becoming the raw material of high silicon steel plate carries out punch process using the mould for motor iron core processing
Operation；And
Low-silicon steel plate to being punched by the punch process as motor iron core shape carry out siliconising process be used as it is described
The siliconising operation of the high silicon steel plate of motor iron core shape.
10. a kind of punch process steel plate, it is characterised in that
Should use for motor iron core processing mould carry out punch process greater than other parts it is softer.
11. punch process steel plates according to claim 10, it is characterised in that
The Si contents at the position that should carry out punch process using the mould for motor iron core processing are fewer than other positions.
The 12. punch process steel plates according to claim 10 or 11, it is characterised in that
It is thin other positions of the thickness ratio at position of punch process should to be carried out using the mould for motor iron core processing.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013103763A JP2014223641A (en) | 2013-05-16 | 2013-05-16 | Manufacturing method of press working product and press working steel plate |
| JP2013-103763 | 2013-05-16 |
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| Publication Number | Publication Date |
|---|---|
| CN104164645A CN104164645A (en) | 2014-11-26 |
| CN104164645B true CN104164645B (en) | 2017-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410167849.8A Expired - Fee Related CN104164645B (en) | 2013-05-16 | 2014-04-24 | Method of manufacturing pressed part and steel sheet for press working |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2803737A3 (en) |
| JP (1) | JP2014223641A (en) |
| CN (1) | CN104164645B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108581057B (en) * | 2018-05-04 | 2020-02-11 | 山东大学 | Surface alloying weakening treatment auxiliary processing method for efficient cutting of difficult-to-process material |
| CN109647956B (en) * | 2019-01-10 | 2020-11-20 | 宁波富技精工汽车零部件有限公司 | Punching process for silicon steel sheet of iron core of precise high-speed power motor |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62227078A (en) * | 1986-03-28 | 1987-10-06 | Nippon Kokan Kk <Nkk> | Manufacture of high silicon steel strip continuous line |
| JP3045009B2 (en) * | 1994-06-23 | 2000-05-22 | 日本鋼管株式会社 | Silicon steel strip |
| JP3890790B2 (en) | 1998-12-09 | 2007-03-07 | Ｊｆｅスチール株式会社 | High silicon steel sheet |
| JP2001107218A (en) * | 1999-09-30 | 2001-04-17 | Nkk Corp | Method for producing high silicon steel strip by gas siliconizing treating method |
| JP4484710B2 (en) | 2002-11-11 | 2010-06-16 | ポスコ | Silica diffusion coating composition and method for producing high silicon electrical steel sheet using the same |
| CN102510141B (en) * | 2011-10-31 | 2014-01-29 | 安泰科技股份有限公司 | Amorphous, microcrystalline or nano-crystalline alloy stator iron core for axial magnetic flux motor and manufacture method for stator iron core |
-
2013
- 2013-05-16 JP JP2013103763A patent/JP2014223641A/en active Pending
-
2014
- 2014-04-24 CN CN201410167849.8A patent/CN104164645B/en not_active Expired - Fee Related
- 2014-05-05 EP EP14166981.2A patent/EP2803737A3/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| EP2803737A3 (en) | 2015-11-04 |
| EP2803737A2 (en) | 2014-11-19 |
| CN104164645A (en) | 2014-11-26 |
| JP2014223641A (en) | 2014-12-04 |
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