JP2012043969A - Plywood laminate including individual soft magnetic sheet, electromagnetically-actuated apparatus, manufacturing method of the same, and method for using soft magnetic plywood laminate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a plywood laminate including an individual soft magnetic sheet having a magnetic characteristic suitable for an electromagnetic coil system, an electromagnetically-actuated apparatus of an electromagnetic injection valve, and a simple method of producing the same.SOLUTION: The plywood laminate is formed of a plurality of roughly U-shaped soft magnetic individual sheets 18. The individual sheets 18 are bent like an involute curve in the plywood laminate. Each of them is laminated to form an outside partition part 14 and an inside partition part 15 and to have a U-shaped region as a leg part in the plywood laminate. A rectangular recessed part corresponding to the U-shaped region, when the individual sheet 18 is in a non-curved state, is located at an equal distance from side faces of the individual sheet 18.

Description

  The present invention relates to a plywood laminate including individual soft magnetic sheets, for example, an electromagnetic actuator for controlling a large amount of fuel supplied to an internal combustion engine, and a manufacturing method thereof.

  The electromagnetic actuator includes a valve seat having a valve body mounting tool, and can move the valve body by the magnetic field action of an armature attached to the valve body. In such a configuration, a magnetic field is generated by passing a current through the coil. The magnetic flux flows through the armature with a time difference.

  Generally, it is preferable to switch the valve in a short time of 40 μs to 100 μs or less. In particular, the electromagnetic actuator is preferably used as an injection valve. In order to achieve the switching of the valve in such a short time, it is necessary to minimize the time difference from when the current flows through the coil until the magnetic field is generated in the armature. An important factor in determining the shortest time delay range is the generation of eddy currents induced in the electric derivative of the armature due to the time variation of the magnetic field.

  An injection valve is known in DE 100 05 182 Al in which eddy currents generated in the polar bodies between the connected coils are offset by currents flowing alternately through the coils. The disadvantage of such a configuration is that eddy current cancellation is achieved locally and the magnetic flux is also canceled. Loss due to eddy current still remains, and the switching time cannot be increased. In addition, the restriction of the coil and pole geometry to achieve the most effective cancellation of eddy currents severely limits the design of the injector.

  Another means for reducing eddy currents is disclosed in DE 103 19 285 B3. Here, an injection valve having slits formed radially in both the armature and the core is disclosed. It is possible to form a stack with a core, in which slit-like iron sheets or alternative iron rings are stacked concentrically inside or in the toroidal core method.

  However, such injection valves have several drawbacks. Since almost no magnetic flux passes through the slit-type gap, the surface of the conductor through which the magnetic flux passes is lost, and the valve can only withstand a slight opening and closing force. Moreover, in such a configuration, magnetic flux is required to flow parallel to the normal and radial sheets in relation to the concentric rings, and the system as a whole exhibits an undesirably low transmittance value. This can be compensated by greatly increasing the coil current, but at the same time promotes the generation of eddy currents at the sheet level.

  Also, plywood laminates that are spirally or intricately laminated to reduce eddy currents are already known in JP 2002 343626 AA and DE 103 94 029 T5.

  A fuel injection valve for a fuel injection system in an internal combustion engine having a soft magnetic magnet yoke configuration is disclosed in DE 10 2004 032 299 B3. This configuration has a first yoke sheet and a second yoke sheet wound in a spiral.

  According to DE 35 00 530 A1, an electromagnetic drive control system for controlling a lift valve of an internal combustion engine is proposed instead of a mechanical cam control system.

DE100 05 182 Al DE103 19 285 B3 JP 2002 343626 AA DE 103 94 029 T5 DE 10 2004 032 299 B3

  It is an object of the present invention to provide a plywood laminate including individual soft magnetic sheets having magnetic characteristics particularly suitable for an electromagnetic coil system, and an electromagnetic actuator in an electromagnetic injection valve. Another object of the present invention is to provide a simple method for producing them.

  The above object is achieved by the invention according to the independent claim. Other advantageous effects are also exhibited in the dependent claims.

  According to the present invention, a plywood laminate including an individual soft magnetic sheet is provided. The individual sheet is curved in a stretched line shape (involute curve shape) in the plywood laminate. Each individual sheet includes a first long side, a second long side facing the first long side, a first short side, and a second short side facing the first short side. The first long side includes a recess, the recess is rectangular, and when the individual sheet is in a non-curved state, the distance from the first short side, the second short side, and the second long side is equal.

  An open line (involute curve), in particular a circular open line, is defined as the unwinding of the tangent to the open line of a circle. Since the curves of the individual contracted sheets are very small and the magnetic flux flows essentially along the sheet surface, the magnetic flux lines do not intersect on the sheet surface.

  Due to the specific geometric arrangement of the rectangular recesses and the special dimensions of the individual sheets, each of the plywood laminates according to the invention has particularly favorable magnetic properties.

  In a preferred embodiment that is non-curved, each individual sheet is essentially U-shaped. The first leg has a width e, the second leg has a width g, and the base has a thickness d. Here, e = g = d.

In a further embodiment, the plywood laminate has an inner compartment and a base. Inner partition part has an inner diameter D _i, the upper surface of the inner partition part has an area A _a, the base portion has a thickness d. Here, these relationships are expressed by the following equations.

In a further embodiment, the plywood laminate has an inner compartment and a base. The inner partition has an inner diameter _Di and a thickness a, and the base has a thickness d. Here, these relationships are expressed by the following equations.

In a further aspect, the plywood laminate has an inner compartment, an outer compartment, and a base. Inner partition part has an inner diameter D _i, the outer partition portion has an outer diameter D _a and thickness c, the base portion has a thickness d. Here, these relationships are expressed by the following equations.

  In some embodiments, the plywood laminate is rotationally symmetric. The plywood laminate is composed of individual sheets having the same thickness t. It is relatively easy to produce such a plywood laminate. In a further embodiment, the individual sheets have different thicknesses. The thickness of each individual sheet is constant.

The spread line is described parametrically in Cartesian coordinates x and y by the following equation with parameter t ^* . Here, r is the inner diameter of the plywood laminate.

  The ideal limit stacking density (lamination element = 1) is expressed by the following equation. Here, t is the thickness of the individual sheet, and n is the number of individual sheets.

  The preferred sheet thickness in this type of lamination is in the range of about 0.35 mm. Moreover, 1 mm may be sufficient. The inner diameter r of the core is preferably several millimeters to 10 mm.

  According to the following equation (1), the outer diameter R can be obtained.

The use of interlocking dies is particularly advantageous to achieve a reasonable manufacturing process for this type of plywood laminate. This means that one sheet can be stacked on another. At t ^* ≧ π, one individual sheet can no longer be positioned on another sheet. This is because of the curvature, which must be pushed together from one side. Therefore, it is preferable that t ^* <π.

If t ^* <π, which is a condition for easily stacking the plywood laminate, the maximum outer diameter R is 9.9 mm at a general inner diameter r = 3 mm, or the general outer diameter R = 12 mm. The minimum inner diameter r becomes 3.64 mm.

  In a preferred embodiment, the plywood laminate is essentially cylindrical and includes at least one annular recess. The annular recesses are located concentrically in the plywood laminate and are essentially formed by the recesses of the individual sheets.

An individual sheet of an aspect is essentially
12.0 weight percent ≦ Co ≦ 22.0 weight percent,
1.5 weight percent ≦ Cr ≦ 4.0 weight percent,
0.4 weight percent ≦ Mo ≦ 1.2 weight percent,
0.1 weight percent ≦ V ≦ 0.4 weight percent;
0.05 weight percent ≦ Si ≦ 0.15 weight percent,
The remainder consists of Fe.

  In particular, the individual sheets consist essentially of 17.0 weight percent Co, 2.2 weight percent Cr, 0.8 weight percent Mo, 0.2 weight percent V, and 0.09 weight. Percent Si and the rest may be Fe.

In a further embodiment, the individual sheet consists essentially of
12.0 weight percent ≦ Co ≦ 22.0 weight percent,
1.5 weight percent ≦ Cr ≦ 4.0 weight percent,
1.0 weight percent ≦ Mn ≦ 1.8 weight percent;
0.4 weight percent ≦ Si ≦ 1.2 weight percent,
0.1 weight percent ≦ Al ≦ 0.4 weight percent,
The remainder consists of Fe.

  In particular, the individual sheets consist essentially of 18.0 weight percent Co, 2.6 weight percent Cr, 1.4 weight percent Mn, 0.8 weight percent Si, 0.2 weight. Percent Al and the rest may be Fe.

In a further embodiment, the individual sheet consists essentially of
12.0 weight percent ≦ Co ≦ 22.0 weight percent,
1.0 weight percent ≦ Cr ≦ 2.0 weight percent;
0.5 weight percent ≦ Mn ≦ 1.5 weight percent,
0.6 weight percent ≦ Si ≦ 1.8 weight percent,
0.1 weight percent ≦ V ≦ 0.2 weight percent;
The remainder consists of Fe.

  In particular, the individual sheets consist essentially of 17.0 weight percent Co, 1.4 weight percent Cr, 1.0 weight percent Mn, 1.2 weight percent Si, 0.13 weight percent. As a percentage, the remainder may be made of Fe.

In a further embodiment, the individual sheet consists essentially of
15 weight percent ≦ Co ≦ 18.0 weight percent,
0 weight percent ≦ Mn ≦ 3.5 weight percent,
0 weight percent ≦ Si ≦ 1.8 weight percent,
The remainder consists of Fe.

  In particular, the individual sheets may essentially consist of 15 weight percent ≦ Co ≦ 18.0 weight percent with the balance being Fe. In addition, the individual sheet may be essentially composed of 15 weight percent or more of Co, 1 weight percent of Si, and the rest of Fe. In addition, the individual sheet may be essentially composed of 15 weight percent or more of Co, 2.7 weight percent of Mn, and the rest of Fe.

In a further embodiment, the individual sheet consists essentially of
0 weight percent <Ni <5.0 weight percent,
0 weight percent <Co <1.0 weight percent,
0 weight percent <C <0.03 weight percent,
0 weight percent <Si <0.5 weight percent,
0 weight percent <S <0.03 weight percent,
0 weight percent <Al <0.08 weight percent,
0 weight percent <Ti <0.1 weight percent,
0 weight percent <V <0.1 weight percent,
0 weight percent <P <0.015 weight percent,
0.03 weight percent <Mn <0.2 weight percent,
The remainder consists of Fe.

In a further embodiment, the individual sheet consists essentially of
0 weight percent <Ni <5.0 weight percent,
0 weight percent <Co <1.0 weight percent,
0 weight percent <C <0.1 weight percent,
0 weight percent <Si <4.5 weight percent,
0 weight percent <S <1.0 weight percent,
0 weight percent <Al <2.0 weight percent,
0 weight percent <Mo <1.0 weight percent,
0 weight percent <Mn <1.0 weight percent,
The remainder consists of Fe.

In a further embodiment, the individual sheet consists essentially of
5 weight percent <Cr <23.0 weight percent,
0 weight percent <Ni <8.0 weight percent,
0 weight percent <Co <1.0 weight percent,
0 weight percent <C <0.1 weight percent,
0 weight percent <Si <4.0 weight percent,
0 weight percent <S <1.0 weight percent,
0 weight percent <Al <2.0 weight percent,
0 weight percent <Mo <1.0 weight percent,
0 weight percent <Mn <1.0 weight percent,
The remainder consists of Fe.

In a further embodiment, the individual sheet consists essentially of
20 weight percent <Ni <85.0 weight percent,
0 weight percent <Co <1.0 weight percent,
0 weight percent <C <0.1 weight percent,
0 weight percent <Si <4.0 weight percent,
0 weight percent <S <0.1 weight percent,
0 weight percent <Al <2.0 weight percent,
0 weight percent <Mo <5.0 weight percent,
0 weight percent <Mn <4.0 weight percent,
0 weight percent <Cu <5.0 weight percent,
The remainder consists of Fe.

In a further embodiment, the soft magnetic individual sheet alloy has the following composition in weight percent:
A _{Fe rem Co a Cr b S c} Mo d Si e Al f Mn g M h V i Ni j C k Cu l P m N n O o B p, 0% ≦ a ≦ 50%, 0% ≦ b20 %, 0% ≦ c ≦ 0.5%, 0% ≦ d ≦ 3%, 0% ≦ e ≦ 3.5%, 0% ≦ f ≦ 4.5%, 0% ≦ g ≦ 4.5%, 0% ≦ h ≦ 6%, 0% ≦ i ≦ 4.5%, 0% ≦ j ≦ 5%, 0% ≦ k ≦ 0.05%, 0% ≦ l ≦ 1%, 0% ≦ m ≦ 0 1%, 0% ≦ n ≦ 0.5%, 0% ≦ o ≦ 0.05%, 0% ≦ p ≦ 0.01%, where M is at least Sn, Zu, W, One atom of Ta, Nb, Zr, and Ti is included.

In a further embodiment, the soft magnetic individual sheet essentially has _a composition of Fe _rem Co ₁₇ Cr ₂ or Fe _rem Co _a in weight percent with 3 ≦ a ≦ 25. In a further embodiment, the individual soft magnetic sheets are made of pure iron or chrome steel (especially those requiring a high level of anti-corrosion behavior) or provided as electroplating coated with silica.

  Furthermore, in order to reduce eddy currents, in a preferred embodiment, the individual soft magnetic sheet formed from the plywood laminate has an electrical insulating film on at least one side. Depending on the requirements and the coating technology used, insulators may be coated on both sides.

In a further preferred embodiment, magnesium oxide (MgO) is used as the electrical insulating film. As an alternative embodiment, dicoronium oxide (ZrO ₂ ) may be used. Additionally or alternatively, magnetite (magnetite: Fe ₃ O ₄ ), hematite (Fe ₂ O ₃ ), or a self-oxidizing layer may be used as the electrical insulating film.

  In a further aspect, the plywood laminate has at least one opening in which a through-hole for advancing and retracting the electric wire of the coil is formed.

  The present invention also relates to an electromagnetic actuator having a soft magnetic core including at least one plywood laminate corresponding to any one of the above aspects.

  In some embodiments, the electromagnetic differential is configured as an inlet / outlet valve.

  In a further aspect, the electromagnetic differential is formed as an injection valve for controlling fuel supplied to the internal combustion engine.

  The injection valve may be movable toward the valve seat by an electromagnetic coil system and may have a valve body connected to a soft magnetic armature of the electromagnetic coil system. The electromagnetic coil system has at least one coil having a soft magnetic core.

  In particular, the composition of a soft magnetic core having a sheet type structure is suitable for reducing eddy currents. However, in order to obtain the advantage of such a seat-type structure, the magnetic flux must run along the individual sheet when the injection valve is operated, and should not intersect the individual sheet as much as possible. This results in a lot of loss. In particular, it is preferable to manufacture an individual sheet having a certain thickness.

  Since it is a stretched line configuration for forming a plywood laminate, it can be used to build a radially symmetrical core in a magnetic flux that runs substantially parallel to the sheet surface. Therefore, loss is minimized. Also, due to the shape of the plywood laminate, the core has a particularly low eddy current loss.

  A further advantage of the injection valve is that it is not suitable for sintering and compression and has not previously been considered in the production of compressed or sintered cores, but has good magnetic properties such as, for example, high saturation polarization. It is a point which can use the material which has for a plywood laminated body. Alloys with high saturation polarization generally have the disadvantages of having a low electrical resistivity and promoting the generation of eddy currents. While saturation polarization is primarily affected by the alloy composition of the core, the electrical resistance is also affected by its shape (mainly the shape of the core as a plywood laminate).

  Therefore, since saturation polarization and electrical resistance variables can be separated, a core having a high value in both of them can be obtained. With this kind of core, on the one hand, a short switching time of the injection valve can be achieved, and on the other hand, a low magnetization switching loss and a high holding force can be achieved. Therefore, such an injection valve is particularly suitable for direct injection of automobiles that require a high holding force for high fuel pressure and a short switching time for economical operation.

  The soft magnetic core and / or the soft magnetic armature are preferably arranged concentrically with the injection valve as the central axis. The valve element connected to the armature can be moved to the open state or the closed state by applying a current through the electric coil system in the open or closed position of the injection valve. To do.

  In a preferred embodiment, the soft magnetic core is essentially cylindrical and has a circular recess for receiving at least one coil. Circular recesses are arranged on concentric circles of the soft magnetic core and are essentially formed by recesses in the individual sheets.

  A method for manufacturing a plywood laminate, the present invention includes the following steps. First, individual soft magnetic sheets are manufactured and formed. Each individual sheet has a first long side, a second long side facing the first long side, a first short side, and a second short side facing the first short side. . The first long side includes a recess when the individual sheet is in a non-curved state, and the recess is rectangular and equidistant from the first short side, the second short side, and the second long side. is there. In the subsequent process, the individual sheets are first curved to form a stretched line and then laminated to form a plywood laminate.

  In the above process, the individual sheets are particularly manufactured and formed to the same thickness. Further, the individual sheets may be manufactured so that each has a constant thickness and a different thickness.

  The individual sheets are formed, for example, by stamping, wire erosion or cutting.

  In a preferred embodiment, the individual sheets are coated with an electrically insulating paint in a pre- or post-process of lamination to form a plywood laminate. This coating may be performed, for example, by spraying, dipping (dipping method) and / or oxidation by air or steam.

In some embodiments, the individual sheet is essentially:
12.0 weight percent ≦ Co ≦ 22.0 weight percent,
1.5 weight percent ≦ Cr ≦ 4.0 weight percent,
0.4 weight percent ≦ Mo ≦ 1.2 weight percent,
0.1 weight percent ≦ V ≦ 0.4 weight percent;
0.05 weight percent ≦ Si ≦ 0.15 weight percent,
The remainder consists of Fe.

  In particular, the individual sheets consist essentially of 17.0 weight percent Co, 2.2 weight percent Cr, 0.8 weight percent Mo, 0.2 weight percent V, and 0.09 weight. Percent Si and the rest may be Fe.

In a further embodiment, the individual sheet consists essentially of
12.0 weight percent ≦ Co ≦ 22.0 weight percent,
1.5 weight percent ≦ Cr ≦ 4.0 weight percent,
1.0 weight percent ≦ Mn ≦ 1.8 weight percent;
0.4 weight percent ≦ Si ≦ 1.2 weight percent,
0.1 weight percent ≦ Al ≦ 0.4 weight percent,
The remainder consists of Fe.

  In particular, the individual sheets consist essentially of 18.0 weight percent Co, 2.6 weight percent Cr, 1.4 weight percent Mn, 0.8 weight percent Si, 0.2 weight. Percent Al and the rest may be Fe.

In a further embodiment, the individual sheet consists essentially of
12.0 weight percent ≦ Co ≦ 22.0 weight percent,
1.0 weight percent ≦ Cr ≦ 2.0 weight percent;
0.5 weight percent ≦ Mn ≦ 1.5 weight percent,
0.6 weight percent ≦ Si ≦ 1.8 weight percent,
0.1 weight percent ≦ V ≦ 0.2 weight percent;
The remainder consists of Fe.

  In particular, the individual sheets consist essentially of 17.0 weight percent Co, 1.4 weight percent Cr, 1.0 weight percent Mn, 1.2 weight percent Si, 0.13 weight percent. As a percentage, the remainder may be made of Fe.

In a further embodiment, the individual sheet consists essentially of
15 weight percent ≦ Co ≦ 18.0 weight percent,
0 weight percent ≦ Mn ≦ 3.5 weight percent,
0 weight percent ≦ Si ≦ 1.8 weight percent,
The remainder consists of Fe.

  In particular, the individual sheets may essentially consist of 15 weight percent ≦ Co ≦ 18.0 weight percent with the balance being Fe. In addition, the individual sheet may be essentially composed of 15 weight percent or more of Co, 1 weight percent of Si, and the rest of Fe. In addition, the individual sheet may be essentially composed of 15 weight percent or more of Co, 2.7 weight percent of Mn, and the rest of Fe.

In a further embodiment, the individual sheet consists essentially of
0 weight percent <Ni <5.0 weight percent,
0 weight percent <Co <1.0 weight percent,
0 weight percent <C <0.03 weight percent,
0 weight percent <Si <0.5 weight percent,
0 weight percent <S <0.03 weight percent,
0 weight percent <Al <0.08 weight percent,
0 weight percent <Ti <0.1 weight percent,
0 weight percent <V <0.1 weight percent,
0 weight percent <P <0.015 weight percent,
0.03 weight percent <Mn <0.2 weight percent,
The remainder consists of Fe.

In a further embodiment, the individual sheet consists essentially of
0 weight percent <Ni <5.0 weight percent,
0 weight percent <Co <1.0 weight percent,
0 weight percent <C <0.1 weight percent,
0 weight percent <Si <4.5 weight percent,
0 weight percent <S <1.0 weight percent,
0 weight percent <Al <2.0 weight percent,
0 weight percent <Mo <1.0 weight percent,
0 weight percent <Mn <1.0 weight percent,
The remainder consists of Fe.

In a further embodiment, the individual sheet consists essentially of
5 weight percent <Cr <23.0 weight percent,
0 weight percent <Ni <8.0 weight percent,
0 weight percent <Co <1.0 weight percent,
0 weight percent <C <0.1 weight percent,
0 weight percent <Si <4.0 weight percent,
0 weight percent <S <1.0 weight percent,
0 weight percent <Al <2.0 weight percent,
0 weight percent <Mo <1.0 weight percent,
0 weight percent <Mn <1.0 weight percent,
The remainder consists of Fe.

In a further embodiment, the individual sheet consists essentially of
20 weight percent <Ni <85.0 weight percent,
0 weight percent <Co <1.0 weight percent,
0 weight percent <C <0.1 weight percent,
0 weight percent <Si <4.0 weight percent,
0 weight percent <S <0.1 weight percent,
0 weight percent <Al <2.0 weight percent,
0 weight percent <Mo <5.0 weight percent,
0 weight percent <Mn <4.0 weight percent,
0 weight percent <Cu <50 weight percent,
The remainder consists of Fe.

In a further embodiment, the soft magnetic individual sheet alloy has the following composition in weight percent:
A _{Fe rem Co a Cr b S c} Mo d Si e Al f Mn g M h V i Ni j C k Cu l P m N n O o B p, 0% ≦ a ≦ 50%, 0% ≦ b20 %, 0% ≦ c ≦ 0.5%, 0% ≦ d ≦ 3%, 0% ≦ e ≦ 3.5%, 0% ≦ f ≦ 4.5%, 0% ≦ g ≦ 4.5%, 0% ≦ h ≦ 6%, 0% ≦ i ≦ 4.5%, 0% ≦ j ≦ 5%, 0% ≦ k ≦ 0.05%, 0% ≦ l ≦ 1%, 0% ≦ m ≦ 0 1%, 0% ≦ n ≦ 0.5%, 0% ≦ o ≦ 0.05%, 0% ≦ p ≦ 0.01%, where M is at least Sn, Zu, W, One atom of Ta, Nb, Zr, and Ti is included.

In a further embodiment, the soft magnetic individual sheet essentially has _a composition of Fe _rem Co ₁₇ Cr ₂ or Fe _rem Co _a in weight percent with 3 ≦ a ≦ 25. In a further embodiment, the individual soft magnetic sheets are made of pure iron or chrome steel (especially those requiring a high level of anti-corrosion behavior) or provided as electroplating coated with silica.

  In a further aspect, the plywood laminate has at least one opening in which a through-hole for advancing and retracting the electric wire of the coil is formed.

  As a disclosure of the present invention, a method for manufacturing an electromagnetic actuator includes the following steps. First, the plywood laminate is manufactured by the method for manufacturing a plywood laminate in any of the above-described aspects. Furthermore, the soft magnetic core is formed from this plywood laminate for an electromagnetic actuator.

  The present invention relates to a method for manufacturing an injection valve for controlling the amount of fuel supplied to an internal combustion engine. This manufacturing method includes the following steps. First, a plywood laminate is manufactured by any of the methods described above. Next, a soft magnetic core is formed from a plywood laminate for the electromagnetic coil system of the injection valve.

  Furthermore, the present invention relates to a method of using a soft magnetic plywood laminate, which is a stretched line-shaped soft magnetic individual sheet, in an electromagnetic actuator laminated in any of the above-described embodiments.

  Furthermore, the present invention provides a soft magnetic plywood laminate, which is a stretched line-shaped soft magnetic individual sheet, in an injection valve for controlling the amount of fuel supplied to an internal combustion engine, which is laminated in any of the above-described embodiments. It relates to how to use things.

In all embodiments referred to herein, the expression “individual sheet consists essentially of” means that the individual sheet is the concentration of atoms referred to in each embodiment, and a total of 2 weight percent or less. It means containing impurities. The impurities include any one of Ni, Cr, Mn, Si, Cu, Mo, Co, Al, C, S, V, Nb, Ti, Zr, Ta, O, N, and P. May be. Except for the case where the concentration of the atom already exists in each embodiment, the limit when the atom is present is as follows.
Ni <1.0 weight percent Cr <1.0 weight percent Mn <1.0 weight percent Si <0.3 weight percent Cu <0.4 weight percent Mo <0.5 weight percent Co <1.0 weight percent Al <0.1 weight percent C <0.1 weight percent S <1.0 weight percent V <0.1 weight percent Nb <0.1 weight percent Ti <0.1 weight percent Zr <0.1 weight percent Ta < 0.2 weight percent O <0.1 weight percent N <0.1 weight percent P <0.1 weight percent

FIG. 1 is a schematic view showing an outline of an example of an injection valve according to an embodiment of the present invention. FIG. 2A is a plan view showing an outline of the core according to the present invention. FIG. 2B is a bottom view showing an outline of a core according to a further embodiment of the present invention. FIG. 3 is a cross-sectional view showing an outline of the central axis of a rotationally symmetric core formed of a solid material. FIG. 4 is a cross-sectional view showing the outline of the central axis of the rotationally symmetric core in the stretched plywood laminate according to the present invention. FIG. 5 is a cross-sectional view showing the outline of the central axis of the rotationally symmetric core when the individual sheet is in a non-curved state. FIG. 6 is a plan view showing an outline of the individual stretched wire sheet inside the core according to the present invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, the same elements are denoted by the same reference numerals.

  FIG. 1 shows a cross section of the injection valve 1. The injection valve 1 has a housing 2 of a valve body 3 that moves forward and backward with respect to a valve seat 4. In the present embodiment, pressure is applied to the valve body 3 in advance by the spring member 12 at the closed position of the injection valve 1. In such a configuration, the spring member 12 presses the valve body 3 so that the valve body 3 is in contact with the valve seat 4.

  The fuel reaches the valve interior 5 through the fuel inlet 6 and reaches the fuel chamber through the fuel outlet 19 when the injection valve 1 is open. Further, for example, the fuel inlet 6 may be provided in the upper region of the injection valve 1 so that the fuel flows into the valve interior 5 from above.

  The electromagnet coil system 9 operates the injection valve 1. The electromagnetic coil system 9 includes an armature 8 provided on the valve body 3, and a current flows through at least one coil 10 by a power source (not shown) and a core 11. In the present embodiment, the core 11 is bowl-shaped and the coil 10 is inserted.

  By passing a current through the coil 10, a magnetic field is generated in the core 11, and the core 11 attracts the armature 8. The armature 8 rises and the tip 7 of the valve body 3 is released from the valve seat 4. Accordingly, the fuel outlet 19 is opened. The valve body 3 ascends compresses the spring member 12 and contacts the ascending stopper 13. Once the excitation current is turned off, the valve body 3 is pushed back by the spring member 12. Therefore, the valve closes again.

  FIG. 2 is a plan view showing an outline of the core 11 according to the present invention. In the present embodiment, the core 11 is a bowl-shaped (pot type), and has an inner partition part 15 and an outer partition part 14, and a recess 17 into which a coil is fitted is provided between them. The bottom of the recess 17 is closed by the base 20. A cylindrical center hole 16 is formed in the center of the core 11, and a valve body is inserted into the center hole 16 when the valve is assembled. The central hole 16 has a longitudinal axis that essentially forms the axis of symmetry of the core 11.

  As shown in FIG. 2, the outer partition part 14, the inner partition part 15, and the base part 20 are formed by a plywood laminate composed of a plurality of individual sheets 18. In this embodiment, each individual sheet 18 is substantially U-shaped, and each is laminated to form an outer compartment 14 and an inner compartment 15 and then into a U-shape as its leg in the plywood laminate. Has a mold area. For this reason, each individual sheet 18 has a rectangular recess on the first long side surface of each individual sheet 18. When the individual sheet 18 is in a non-curved state, the recess 25 has a first short side surface, a second short side surface facing the first short side surface, and a second surface facing the first long side surface of the individual sheet. It is equidistant from the long side. As a result, as will be described in detail below with reference to the drawings, particularly effective magnetic properties are exhibited for the plywood laminate. All the individual sheets 18 have the same thickness t and are laminated adjacent to each other in a stretched line shape.

  FIG. 2B is a bottom view showing an outline of a core 11 ′ according to a further embodiment of the present invention. Also in this embodiment, the core 11 ′ has a bowl shape, and includes a 17 inner partition portion 15 and an outer partition portion 14 sandwiching a recess in the coil. Since the concave portion 17 is a portion not shown in the bottom view, it is indicated by a broken line in FIG. 2B. The base 20 closes the bottom of the core 11 '. In the central portion of the core 11 ', a valve body is inserted when the valve is assembled, and a cylindrical center hole 16 having a longitudinal axis that is essentially the axis of symmetry of the core 11' is formed.

  The outer partition part 14, the inner partition part 15, and the base part 20 are formed by a plywood laminate composed of a plurality of individual sheets 18, as shown in FIG. 2B. All the individual sheets 18 have the same thickness t and are laminated adjacent to each other in a stretched line shape.

  Further, the base portion of the core 11 ′ has, for example, two hole-shaped openings 28. In this embodiment, the opening 28 forms an insertion hole for the wire of the coil to advance and retract. In the illustrated embodiment, each of the two openings 28 has a diameter of 1 mm to 3 mm, for example. Further, the two openings 28 are arranged at rotationally symmetric positions, particularly because the core 11 'is rotationally symmetric.

  In a further embodiment, the core has only one opening, for example 3 mm to 6 mm. This opening forms an insertion hole for both wires to advance and retract. In a further form, two or more openings may be provided.

  As an object of comparison, FIG. 3 shows an outline of the central axis of a rotationally symmetric core formed of a solid material. The core is formed, for example, as a saddle magnet manufactured from a solid material by rotational machining, milling and / or cutting. The core 11 has an inner partition portion 15 and an outer partition portion 14 that sandwich a recess 17 for a coil. In the central portion of the core 11 ', a valve body is inserted when the valve is assembled, and a cylindrical center hole 16 having a longitudinal axis that is essentially the axis of symmetry of the core 11' is formed.

  Hereinafter, the course of the magnetic flux of the saddle magnet manufactured from the solid material will be described. For example, if it is assumed that the magnetic flux in the saddle magnet is constant, ignoring the loss of magnetic flux that satisfies the high permeability material having a relative permeability of μ> 1000, the magnetic flux density is equal at a narrow point. Accordingly, the surfaces Ac ′ (front surface of the outer partition part 14 in the shape of the outer side of the ring), Aa ′ (front surface of the inner partition part 15 in the shape of the inner side of the ring), and Aa ′ (inner side of the ring having the height d ′) The three important surfaces of the inner surface 15 in the shape of the same shape have the same area.

The magnetic flux enters the surface A _c ′ of the outer ring. The surface A _c ′ is represented by the following formula.

In the above formula, D _a is the outside diameter of the pot magnet, C'is the thickness of the outer compartment portion 14. The magnetic flux is interrupted at the front surface A _a ′ of the saddle magnet. A _a ′ is determined by the following equation.

In the above formula, D _i is the inner diameter of the pot magnet, a'is the thickness of the inner compartment 15. In order for the magnetic flux to pass from A _a ′ to A _c ′, it must pass through the envelope surface A _d ′. A _d ′ is represented by the following equation.

  When determining the dimensions of the solid saddle magnet, the above equations (1) to (4) are considered.

  FIG. 4 is a cross-sectional view showing an outline of the central axis of a rotationally symmetric core in a stretched plywood laminate including the individual sheets 18. The core is formed in a bowl shape and has an inner partition portion 15 and an outer partition portion 17 that sandwich a recess 17 for a coil. A cylindrical center hole 16 is formed in the center of the core 11, and a valve body is inserted into the center hole 16 when the valve is assembled. The central hole 16 has a longitudinal axis that essentially forms the axis of symmetry of the core 11.

  Hereinafter, the course of the magnetic flux in the saddle magnet formed by the individual sheet of the stretched wire will be described. Approximately 100% plywood laminate elements are envisioned.

  As in the case of the solid material core in FIG. 3, the following state is achieved by an elongated linear magnet.

In the above formula, A _c is the front of the outer partition 14 in the outer shape of the ring, A _a is the front of the inner partition 15 in the inner shape of the ring, and _{Ad, f} are As shown in FIG. 5, it is a cross section of individual sheets having parallel curved surfaces, and is laminated by a plurality of individual sheets.

  The same surface condition is applied, for example, to the front side of the saddle-shaped magnet of a stretched wire-like individual sheet formed as a solid saddle-shaped magnet as follows.

  These surface normals are parallel to the magnetic flux in the two saddle magnet variants. Thus, the front dimensions are the same.

However, the relationship between the vectors of the surfaces A _d and A _d ′ is not the same. Hereinafter, this will be described in detail with reference to FIG.

  FIG. 5 is a sectional view showing an outline of the central axis of the rotationally symmetric core when the individual sheet is in a non-curved state.

  The individual sheet 18 has a rectangular recess 25 on the first long side surface 21 of the individual sheet 18. Further, the individual sheet 18 includes a second long side surface that faces the first long side surface, a first short side surface 23, and a second short side surface that faces the first short side surface 23.

The number n of individual sheets having a thickness t is 100% of the elements forming the plywood laminate, as shown in D _i, the individual sheets for vertically formed in the inner surface is expressed by the following equation.

According to the flat individual sheet, the front surface _Ac is obtained by the following formula, and not only the dimensions of the saddle magnet but also the dimensions of the individual sheet 18 are used.

Here, g is the distance from the recess 25 to the first short side surface 23. The same applies in A _a.

Here, e is the distance from the recess 25 to the second short side surface 24. The main difference between the two saddle magnets is the envelope surfaces A _d and A _d ′. Referring again to the individual sheet shown in FIG. 5, the formula of the saddle type magnet formed of the stretched line-shaped individual sheet is as follows.

  Here, d is the distance from the recess 25 to the long side surface 22. That is, it is as follows.

  For example, the outside of the envelope surface of a saddle-shaped magnet formed from a stretched individual sheet is always larger than the surface of a solid saddle-shaped envelope, and d increases accordingly. According to equations (5), (10), (11), and (12), the state of the saddle-shaped magnet made of the individual sheet of the stretched line is as follows.

  Therefore, such a state is such that when the individual sheet 18 is in an uncurved state, the recess on the first long side surface of the individual sheet 18 is opposite to the first short side surface and the first short side surface of the individual sheet 18 It means that it is equidistant from the second short side surface of the individual sheet 18 located on the side and the second long side surface of the individual sheet 18 located on the opposite side of the first long side surface. This achieves particularly good core magnetic properties.

  A further situation is shown in FIG. FIG. 6 is a plan view showing an outline of the individual stretched wire sheet inside the core in the embodiment of the saddle type magnet.

Basically, in the solid core, the magnetic flux flows radially through the base of the saddle magnet. Flux is radially 'passes through, respectively, a right angle _{A d'} surface _{A d} bump into.

In a saddle-shaped magnet made up of individual sheets in a stretched line shape, the magnetic flux flows in a stretched line shape along the shape of the individual sheet. Here, the magnetic flux is not flow radially through the surface A _d, nor that each strikes the right angle A _d. Angle α shown in FIG. 6, at the intersection of the outer individual sheets 18 of the envelope surface A _d, tangential and, surrounded by the normal of the surface of the envelope surface A _d of the inner compartment 15 angle to the individual sheets is there. In other words, the angle α is an angle surrounded by a tangent line 26 to the individual sheet 18 at the intersection of the individual sheet 18 and a circle having a diameter of (Di + 2a), a straight line 27 passing through this intersection, and a concentric circle or the center of the concentric circle. It is. This angle α is always 90 degrees or less. This angle α should be taken into account when determining the dimensions in order to reduce the radial component of the magnetic flux and the magnetic flux density.

α is related from the parameter D _i by the following equation:

  To calculate the magnetic flux density and the surface, the vector relationship is taken into account. The following relationship applies to the radial component of the magnetic flux that strikes vertically.

  This gives, according to equations (1) and (5), the following equations necessary to keep the magnetic flux density constant at the surface:

Here, _Ad is the envelope surface of the inner partition 15 in the shape on the right inner side having the height d. According to equation (15), this is

The thickness d of the base portion in the core (for example, a saddle magnet) made of a stretched sheet is the thickness d of the solid saddle magnet due to the elements of 1 / COS α and (2 · α + D _i ) / D _i , respectively. Greater than ´.

  According to equations (1), (4), (7), and (8), equation (17) provides the following relationship:

  Also, according to equations (15) and (7), equation (17) provides the following relationship:

  And taking into account equations (3) and (8), equation (17) provides the following equation:

Since A _a = A _a ′ = A _c = A _c ′, equation (21) is expressed as follows by using equation (2).

  In this embodiment, the plywood laminate or core has an opening as an insertion hole through which the electric wire advances and retracts, which may affect the magnetic flux. This may also affect equation (14) and equation (17) through equation (22).

DESCRIPTION OF SYMBOLS 1 Injection valve 2 Housing 3 Valve body 4 Valve seat 5 Valve inside 6 Fuel inlet 7 Tip 8 Armature 9 Electromagnetic coil system 10 Coil 11 Core 11 Core 12 Spring member 13 Stopper 14 Outer partition part 15 Inner partition part 16 Center hole 17 Recessed part 18 Individual sheet 19 Fuel outlet 20 Base portion 21 Long side surface 22 Long side surface 23 Short side surface 23 Short side surface 24 Tangent line 25 Straight line 28 Opening portion

Claims (81)

Includes multiple soft magnetic individual sheets (18),
The individual sheet (18) is curved in a stretched line shape in the plywood laminate,
Each individual sheet (18) includes a first long side surface (21), a second long side surface (22) facing the first long side surface (21), a first short side surface (23), and the Including a second short side (24) opposite the first short side (23);
The first long side surface (21) includes a recess (25);
The recess (25) is rectangular,
When the individual sheet (18) is in a non-curved state, the distances from the first short side surface (23), the second short side surface (24), and the second long side surface (22) are equal. Plywood laminate.
Each of the individual sheets (18) is U-shaped when in an uncurved state,
The first leg has a width e, the second leg has a width g, the base has a thickness d,
Here, it is e = g = d, The plywood laminated body of Claim 1 characterized by the above-mentioned.
An inner compartment (15) and a base (20);
The compartment section (15) has an inner diameter _{D i,}
Upper surface of the compartment unit (15) has an area _{A a,}
The base has a thickness d;
The plywood laminate according to claim 1 or 2, wherein these relationships are represented by the following formula.

An inner compartment (15) and a base (20);
The inner compartment (15) has an inner diameter _Di and a thickness a,
The base (20) has a thickness d;
The plywood laminate according to claim 1 or 2, wherein these relationships are represented by the following formula.

An inner compartment (15), an outer compartment (14), and a base (20);
The compartment section (15) has an internal diameter _{D i,}
It said outer compartment (14) has an outer diameter _{D a} and thickness c,
The base (20) has a thickness d;
Here, these relations are expressed by the following formula. The plywood laminate according to claim 1 or 2.

The plywood laminate according to any one of claims 1 to 5, wherein the individual sheets (18) have the same thickness.
The individual sheets (18) have different thicknesses,
Each individual sheet (18) has a constant thickness.
The plywood laminate according to any one of claims 1 to 6.
The first long side surface (21) and the second long side surface (22) have a curve represented by the following equation depending on the parameter t ^* when expressed in Cartesian coordinates x and y. age,
Here, r is an inner diameter of the plywood laminate. The plywood laminate according to any one of claims 1 to 7.

The plywood laminate according to claim 8, wherein a relationship of t ^* <π is applied to the parameter t ^* .
Cylindrical shape,
Including at least one annular recess (17);
The annular recess (17) is located concentrically in the plywood laminate and is formed by a recess (25) in the individual sheet (18). Plywood laminate as described.
The individual sheet (18)
12.0 weight percent ≦ Co ≦ 22.0 weight percent,
1.5 weight percent ≦ Cr ≦ 4.0 weight percent,
0.4 weight percent ≦ Mo ≦ 1.2 weight percent,
0.1 weight percent ≦ V ≦ 0.4 weight percent;
0.05 weight percent ≦ Si ≦ 0.15 weight percent,
The plywood laminate according to any one of claims 1 to 10, wherein the remainder is made of Fe.
The individual sheet (18)
17.0 weight percent Co;
2.2 weight percent Cr;
0.8 weight percent Mo,
0.2 weight percent V,
0.09 weight percent Si,
The plywood laminate according to claim 11, wherein the remainder is made of Fe.
The individual sheet (18)
12.0 weight percent ≦ Co ≦ 22.0 weight percent,
1.5 weight percent ≦ Cr ≦ 4.0 weight percent,
1.0 weight percent ≦ Mn ≦ 1.8 weight percent;
0.4 weight percent ≦ Si ≦ 1.2 weight percent,
0.1 weight percent ≦ Al ≦ 0.4 weight percent,
The plywood laminate according to any one of claims 1 to 10, wherein the remainder is made of Fe.
The individual sheet (18)
18.0 weight percent Co,
2.6 weight percent Cr;
1.4 weight percent Mn,
0.8 weight percent Si,
0.2 weight percent Al;
The plywood laminate according to claim 13, wherein the remainder is made of Fe.
The individual sheet (18)
12.0 weight percent ≦ Co ≦ 22.0 weight percent,
1.0 weight percent ≦ Cr ≦ 2.0 weight percent;
0.5 weight percent ≦ Mn ≦ 1.5 weight percent,
0.6 weight percent ≦ Si ≦ 1.8 weight percent,
0.1 weight percent ≦ V ≦ 0.2 weight percent;
The plywood laminate according to any one of claims 1 to 10, wherein the remainder is made of Fe.
The individual sheet (18)
17.0 weight percent Co;
1.4 weight percent Cr;
1.0 weight percent Mn;
1.2 weight percent Si,
0.13 weight percent,
The plywood laminate according to claim 15, wherein the remainder is made of Fe.
The individual sheet (18)
15 weight percent ≦ Co ≦ 18.0 weight percent,
0 weight percent ≦ Mn ≦ 3.5 weight percent,
0 weight percent ≦ Si ≦ 1.8 weight percent,
The plywood laminate according to claim 17, wherein the remainder is made of Fe.
The individual sheet (18)
15 weight percent ≦ Co ≦ 18.0 weight percent,
The plywood laminate according to claim 17, wherein the remainder is made of Fe.
The individual sheet (18)
More than 15 weight percent Co,
1 weight percent Si,
The plywood laminate according to claim 17, wherein the remainder is made of Fe.
The individual sheet (18)
More than 15 weight percent Co,
2.7 weight percent Mn;
The plywood laminate according to claim 17, wherein the remainder is made of Fe.
The individual sheet (18)
0 weight percent <Ni <5.0 weight percent,
0 weight percent <Co <1.0 weight percent,
0 weight percent <C <0.03 weight percent,
0 weight percent <Si <0.5 weight percent,
0 weight percent <S <0.03 weight percent,
0 weight percent <Al <0.08 weight percent,
0 weight percent <Ti <0.1 weight percent,
0 weight percent <V <0.1 weight percent,
0 weight percent <P <0.015 weight percent,
0.03 weight percent <Mn <0.2 weight percent,
The plywood laminate according to any one of claims 1 to 10, wherein the remainder is made of Fe.
The individual sheet (18)
0 weight percent <Ni <5.0 weight percent,
0 weight percent <Co <1.0 weight percent,
0 weight percent <C <0.1 weight percent,
0 weight percent <Si <4.5 weight percent,
0 weight percent <S <1.0 weight percent,
0 weight percent <Al <2.0 weight percent,
0 weight percent <Mo <1.0 weight percent,
0 weight percent <Mn <1.0 weight percent,
The plywood laminate according to any one of claims 1 to 10, wherein the remainder is made of Fe.
The individual sheet (18)
5 weight percent <Cr <23.0 weight percent,
0 weight percent <Ni <8.0 weight percent,
0 weight percent <Co <1.0 weight percent,
0 weight percent <C <0.1 weight percent,
0 weight percent <Si <4.0 weight percent,
0 weight percent <S <1.0 weight percent,
0 weight percent <Al <2.0 weight percent,
0 weight percent <Mo <1.0 weight percent,
0 weight percent <Mn <1.0 weight percent,
The plywood laminate according to any one of claims 1 to 10, wherein the remainder is made of Fe.
The individual sheet (18)
20 weight percent <Ni <85.0 weight percent,
0 weight percent <Co <1.0 weight percent,
0 weight percent <C <0.1 weight percent,
0 weight percent <Si <4.0 weight percent,
0 weight percent <S <0.1 weight percent,
0 weight percent <Al <2.0 weight percent,
0 weight percent <Mo <5.0 weight percent,
0 weight percent <Mn <4.0 weight percent,
0 weight percent <Cu <5.0 weight percent,
The plywood laminate according to any one of claims 1 to 10, wherein the remainder is made of Fe.
The individual sheet (18)
A _{Fe rem Co a Cr b S c} Mo d Si e Al f Mn g M h V i Ni j C k Cu l P m N n O o B p,
0% ≦ a ≦ 50%, 0% ≦ b20%, 0% ≦ c ≦ 0.5%, 0% ≦ d ≦ 3%, 0% ≦ e ≦ 3.5%, 0% ≦ f ≦ 4.5 %, 0% ≦ g ≦ 4.5%, 0% ≦ h ≦ 6%, 0% ≦ i ≦ 4.5%, 0% ≦ j ≦ 5%, 0% ≦ k ≦ 0.05%, 0% ≦ l ≦ 1%, 0% ≦ m ≦ 0.1%, 0% ≦ n ≦ 0.5%, 0% ≦ o ≦ 0.05%, 0% ≦ p ≦ 0.01% Have
11. The plywood laminate according to claim 1, wherein M includes at least one atom of Sn, Zu, W, Ta, Nb, Zr, and Ti. object.
The individual sheet (18)
26. The plywood laminate according to claim 25, having _a composition of Fe _rem Co _{a in} weight percent.
The individual sheet (18)
Fe _rem Co ₁₇ Cr ₂ ,
26. A plywood laminate according to claim 25, having a composition in weight percent of 3 ≦ a ≦ 25.
The individual sheet (18)
The plywood laminate according to any one of claims 1 to 10, wherein the plywood laminate is formed as electroplating coated with silica.
The individual sheet (18)
It consists of pure iron, The plywood laminated body in any one of Claims 1-10 characterized by the above-mentioned.
The individual sheet (18)
It consists of chromium steel, The plywood laminated body in any one of Claims 1-10 characterized by the above-mentioned.
The individual sheet (18)
The plywood laminate according to any one of claims 1 to 30, further comprising an electrical insulating film on at least one side.
32. The plywood laminate according to claim 31, wherein magnesium oxide is used as the electrical insulating film.
The plywood laminate according to claim 31, wherein dicornium oxide is used as the electrical insulating film.
The plywood laminate according to any one of claims 31 to 33, wherein magnetite is used as the electrical insulating film.
The plywood laminate according to any one of claims 31 to 33, wherein hematite is used as the electrical insulating film.
The plywood laminate according to any one of claims 31 to 33, wherein a self-oxidation layer is used as the electrical insulating film.
37. The plywood laminate according to any one of claims 1 to 36, comprising at least one opening in which a through hole is formed.
An electromagnetic actuator having a soft magnetic core comprising the plywood laminate according to any one of claims 1 to 37.
39. The electromagnetic actuator according to claim 38, formed as an inlet / outlet valve.
The electromagnetic actuator according to claim 38, characterized in that it is formed as an injection valve (1) for controlling the fuel supplied to the internal combustion engine.
The injection valve (1) is moved toward the valve seat (4) by an electromagnetic coil system (9), and a valve body (3) connected to a soft magnetic armature (8) of the electromagnetic coil system (9). Have
Furthermore, it has at least one coil (10) having the soft magnetic core (11).
The electromagnetic actuator according to claim 40.
The electromagnetic actuator according to claim 41, wherein the soft magnetic core (11) or the soft magnetic armature (8) is arranged on a concentric circle with the injection valve (1) as a central axis.
The electromagnetic actuator according to claim 41, wherein the soft magnetic core (11) and the soft magnetic armature (8) are arranged on a concentric circle with the injection valve (1) as a central axis.
The valve element (3) connected to the armature (8) is pre-stressed by a spring member (12) in the open or closed position of the injection valve (1), and the electric coil system 44. The electromagnetic actuator according to any one of claims 40 to 43, wherein the electromagnetic actuator is movable to an open state or a closed state by passing a current through (9).
The soft magnetic core (11) has a cylindrical shape and has at least one circular recess (17) for receiving the coil (17),
The said circular recessed part (17) is arrange | positioned on the concentric circle of the said soft-magnetic core (11), and is formed of the said recessed part (25) in the said individual sheet | seat (18), From Claim 40 to Claims characterized by the above-mentioned. 45. The electromagnetic actuator according to any one of 44.
A method of manufacturing a plywood laminate,
Producing and forming a plurality of individual soft magnetic sheets (18);
Here, each of the individual sheets (18) includes a first long side surface (21), a second long side surface (22) facing the first long side surface (21), and a first short side surface. (23) and a second short side surface (23) facing the first short side surface (23),
The first long side surface (21) includes a recess (25);
The concave portion (25) is rectangular when the individual sheet is in an uncurved state, and is equidistant from the first short side surface, the second short side surface, and the second long side surface,
Curving the individual sheet (18) into a stretched line;
The manufacturing method including the process of laminating | stacking the said individual sheet (18) in order to form a plywood laminated body.
The manufacturing method according to claim 46, wherein the individual sheets (18) are manufactured and formed with the same thickness.
The manufacturing method according to claim 46, wherein the individual sheets (18) are manufactured and formed so as to have different thicknesses with a constant thickness.
The said individual sheet | seat (18) is coated with an electrically insulating coating in the process before or after laminating | stacking the said individual sheet | seat in order to form the said plywood laminated body. 48. The method according to any one of 48
The manufacturing method according to claim 49, wherein the coating is performed by spray coating.
The manufacturing method according to claim 49, wherein the coating is performed by dipping.
The manufacturing method according to any one of claims 49 to 51, wherein the coating is performed by oxidation in air.
The manufacturing method according to any one of claims 49 to 51, wherein the coating is performed by oxidation with steam.
The manufacturing method according to any one of claims 46 to 53, wherein the individual sheet (18) is formed by punching.
The manufacturing method according to any one of claims 46 to 53, wherein the individual sheet (18) is formed by wire erosion.
The manufacturing method according to any one of claims 46 to 53, wherein the individual sheet (18) is formed by cutting.
The individual sheet (18)
12.0 weight percent ≦ Co ≦ 22.0 weight percent,
1.5 weight percent ≦ Cr ≦ 4.0 weight percent,
0.4 weight percent ≦ Mo ≦ 1.2 weight percent,
0.1 weight percent ≦ V ≦ 0.4 weight percent;
0.05 weight percent ≦ Si ≦ 0.15 weight percent,
57. The manufacturing method according to claim 46, wherein the remainder is made of Fe.
The individual sheet (18)
17.0 weight percent Co;
2.2 weight percent Cr;
0.8 weight percent Mo,
0.2 weight percent V,
0.09 weight percent Si,
The manufacturing method according to claim 57, wherein the remainder is made of Fe.
The individual sheet (18)
12.0 weight percent ≦ Co ≦ 22.0 weight percent,
1.5 weight percent ≦ Cr ≦ 4.0 weight percent,
1.0 weight percent ≦ Mn ≦ 1.8 weight percent;
0.4 weight percent ≦ Si ≦ 1.2 weight percent,
0.1 weight percent ≦ Al ≦ 0.4 weight percent,
57. The manufacturing method according to claim 46, wherein the remainder is made of Fe.
The individual sheet (18)
18.0 weight percent Co,
2.6 weight percent Cr;
1.4 weight percent Mn,
0.8 weight percent Si,
0.2 weight percent Al;
The manufacturing method according to claim 59, wherein the remainder is made of Fe.
The individual sheet (18)
12.0 weight percent ≦ Co ≦ 22.0 weight percent,
1.0 weight percent ≦ Cr ≦ 2.0 weight percent;
0.5 weight percent ≦ Mn ≦ 1.5 weight percent,
0.6 weight percent ≦ Si ≦ 1.8 weight percent,
0.1 weight percent ≦ V ≦ 0.2 weight percent;
57. The manufacturing method according to claim 46, wherein the remainder is made of Fe.
The individual sheet (18)
17.0 weight percent Co;
1.4 weight percent Cr;
1.0 weight percent Mn;
1.2 weight percent Si,
0.13 weight percent,
The manufacturing method according to claim 61, wherein the remainder is made of Fe.
The individual sheet (18)
15 weight percent ≦ Co ≦ 18.0 weight percent,
0 weight percent ≦ Mn ≦ 3.5 weight percent,
0 weight percent ≦ Si ≦ 1.8 weight percent,
57. The manufacturing method according to claim 46, wherein the remainder is made of Fe.
The individual sheet (18)
15 weight percent ≦ Co ≦ 18.0 weight percent,
64. The manufacturing method according to claim 63, wherein the remainder is made of Fe.
The individual sheet (18)
More than 15 weight percent Co,
1 weight percent Si,
64. The manufacturing method according to claim 63, wherein the remainder is made of Fe.
The individual sheet (18)
More than 15 weight percent Co,
2.7 weight percent Mn;
64. The manufacturing method according to claim 63, wherein the remainder is made of Fe.
The individual sheet (18)
0 weight percent <Ni <5.0 weight percent,
0 weight percent <Co <1.0 weight percent,
0 weight percent <C <0.03 weight percent,
0 weight percent <Si <0.5 weight percent,
0 weight percent <S <0.03 weight percent,
0 weight percent <Al <0.08 weight percent,
0 weight percent <Ti <0.1 weight percent,
0 weight percent <V <0.1 weight percent,
0 weight percent <P <0.015 weight percent,
0.03 weight percent <Mn <0.2 weight percent,
57. The manufacturing method according to claim 46, wherein the remainder is made of Fe.
The individual sheet (18)
0 weight percent <Ni <5.0 weight percent,
0 weight percent <Co <1.0 weight percent,
0 weight percent <C <0.1 weight percent,
0 weight percent <Si <4.5 weight percent,
0 weight percent <S <1.0 weight percent,
0 weight percent <Al <2.0 weight percent,
0 weight percent <Mo <1.0 weight percent,
0 weight percent <Mn <1.0 weight percent,
57. The manufacturing method according to claim 46, wherein the remainder is made of Fe.
The individual sheet (18)
5 weight percent <Cr <23.0 weight percent,
0 weight percent <Ni <8.0 weight percent,
0 weight percent <Co <1.0 weight percent,
0 weight percent <C <0.1 weight percent,
0 weight percent <Si <4.0 weight percent,
0 weight percent <S <1.0 weight percent,
0 weight percent <Al <2.0 weight percent,
0 weight percent <Mo <1.0 weight percent,
0 weight percent <Mn <1.0 weight percent,
57. The manufacturing method according to claim 46, wherein the remainder is made of Fe.
The individual sheet (18)
20 weight percent <Ni <85.0 weight percent,
0 weight percent <Co <1.0 weight percent,
0 weight percent <C <0.1 weight percent,
0 weight percent <Si <4.0 weight percent,
0 weight percent <S <0.1 weight percent,
0 weight percent <Al <2.0 weight percent,
0 weight percent <Mo <5.0 weight percent,
0 weight percent <Mn <4.0 weight percent,
0 weight percent <Cu <50 weight percent,
57. The manufacturing method according to claim 46, wherein the remainder is made of Fe.
The individual sheet (18)
A _{Fe rem Co a Cr b S c} Mo d Si e Al f Mn g M h V i Ni j C k Cu l P m N n O o B p,
0% ≦ a ≦ 50%, 0% ≦ b20%, 0% ≦ c ≦ 0.5%, 0% ≦ d ≦ 3%, 0% ≦ e ≦ 3.5%, 0% ≦ f ≦ 4.5 %, 0% ≦ g ≦ 4.5%, 0% ≦ h ≦ 6%, 0% ≦ i ≦ 4.5%, 0% ≦ j ≦ 5%, 0% ≦ k ≦ 0.05%, 0% ≦ l ≦ 1%, 0% ≦ m ≦ 0.1%, 0% ≦ n ≦ 0.5%, 0% ≦ o ≦ 0.05%, 0% ≦ p ≦ 0.01% Have
57. The manufacturing method according to claim 46, wherein M includes at least one atom of Sn, Zu, W, Ta, Nb, Zr, and Ti. .
The individual sheet (18)
_{72. The} method of claim 71, having _a composition of Fe _rem Co _{a in} weight percent.
The individual sheet (18)
Fe _rem Co ₁₇ Cr ₂ ,
72. A method according to claim 71, having a composition in weight percent of 3≤a≤25.
The individual sheet (18)
57. The method according to any one of claims 46 to 56, wherein the method is formed as electroplating coated with silica.
The individual sheet (18)
57. The manufacturing method according to any one of claims 46 to 56, comprising pure iron.
The individual sheet (18)
The manufacturing method according to any one of claims 46 to 56, which is made of chromium steel.
77. The manufacturing method according to any one of claims 46 to 76, wherein at least one opening in which a through hole is formed is formed in a plywood laminate.
A method of manufacturing an electromagnetic actuator,
A step of producing a plywood laminate by the production method according to any one of claims 46 to 77;
A method for manufacturing an electromagnetic actuator, comprising: forming a soft magnetic core for the electromagnetic actuator from the plywood laminate.
A method for manufacturing an injection valve (1) for controlling the amount of fuel supplied to an internal combustion engine, comprising:
A step of producing a plywood laminate by the production method according to any one of claims 46 to 77;
A method of manufacturing an injection valve, comprising: forming a soft magnetic core for the electromagnetic coil system of the injection valve (1) from the plywood laminate.
38. A method of using a soft magnetic plywood laminate according to any one of claims 1 to 37, comprising a laminated, stretched line-shaped soft magnetic individual sheet (18) in an electromagnetic actuator.
The injection valve (1) for controlling the amount of fuel supplied to the internal combustion engine includes a laminated stretched-line-shaped soft magnetic individual sheet (18) according to any one of claims 1 to 37. How to use soft magnetic plywood laminate.

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