Metal material with studs and heat-resistant plates, and method for manufacturing the same.

Abstract

To provide a stud and a metal material with a heat-resistant plate that can be obtained by a manufacturing method of welding the stud penetrating the heat-resistant plate to a surface of the metal material with nearly no damage to the heat-resistant plate.SOLUTION: A stud and a metal material with a heat-resistant plate have a metal material, a heat-resistant plate provided with information on its surface and having a through hole penetrating in a thickness direction, and a stud including a shank, a flange part connected with the shank and extending in a direction different from an axial direction of the shank, and a laminar insulating part covering at least a part of a surface of the shank. A leading end of the shank is welded to a surface of the metal material, with the shank and the insulating part of the stud penetrating the through hole in the heat-resistant plate, and thereby the heat-resistant plate is fixed to the surface of the metal material.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a stud and a metal material with a heat-resistant plate, and a method for manufacturing the same. [Background technology]

[0002] Traditionally, lot numbers were sometimes written on the surface of metal materials (for example, metals with poor surface conditions, metals with surface temperatures ranging from room temperature to high temperatures, and metals that undergo heat treatment (-150 to 1700 degrees Celsius) in subsequent processes) using paint or other methods. This presented problems in terms of worker safety and work efficiency. [Overview of the Initiative] [Problems that the invention aims to solve]

[0003] The inventors believe that the above problem can be solved by attaching a heat-resistant plate, which functions as a tag or label, to the surface of a metal material. Specifically, one possible method is to pass studs through through holes formed in the heat-resistant plate and then weld the studs to the surface of the metal material.

[0004] The inventors have discovered that when welding studs to the surface of a metal material, the heat-resistant plate may be damaged.

[0005] The present invention aims to provide a manufacturing method for welding studs, which penetrate a heat-resistant plate, to the surface of a metal material without substantially damaging the plate, and to provide a metal material with studs and a heat-resistant plate that can be obtained thereby. [Means for solving the problem]

[0006] The present invention is as follows (1) to (3). (1) Metal material and, A heat-resistant plate having information printed on its surface and through holes that penetrate in the thickness direction, A stud comprising a shaft portion, a flange portion connected to the shaft portion and extending in a direction different from the axial direction of the shaft portion, and a layered insulating portion covering at least a part of the surface of the shaft portion, It has, A stud and a metal material with a heat-resistant plate, wherein the heat-resistant plate is fixed to the surface of the metal plate by welding the tip of the shaft portion of the stud to the surface of the metal material, with the shaft portion and the insulating portion of the stud passing through the through hole in the heat-resistant plate. (2) The stud and heat-resistant metal material according to (1), wherein the flange portion also has the insulating portion on the surface facing the metal material. (3) Metal materials, A heat-resistant plate having information printed on its surface and through holes that penetrate in the thickness direction, A stud comprising a shaft portion, a flange portion connected to the shaft portion and extending in a direction different from the axial direction of the shaft portion, and a layered insulating portion covering at least a part of the surface of the shaft portion, The preparation process for preparing, A welding step to obtain a metal material with a stud and heat-resistant plate as described in (1) or (2) above, by passing the shaft portion and the insulating portion of the stud through the through hole in the heat-resistant plate, and welding the tip of the shaft portion to the surface of the metal material using a welding gun, A method for manufacturing a metal material with studs and heat-resistant plates, comprising: [Effects of the Invention]

[0007] According to the present invention, a manufacturing method is provided for welding studs that penetrate a heat-resistant plate to the surface of a metal material without substantially damaging the heat-resistant plate, and a metal material with studs and a heat-resistant plate obtained thereby can be provided. [Brief explanation of the drawing]

[0008] [Figure 1] Figure 1 is a schematic front view of the heat-resistant plate. [Figure 2] Figure 2 shows Embodiment 1, a preferred embodiment of the stud according to the present invention. Figure 2(a) is a schematic perspective view, and Figure 2(b) shows a schematic cross-sectional view in the plane containing its axis ω1. [Figure 3]Figure 3 shows embodiment 2, which is a preferred embodiment of the stud according to the present invention. Figure 3(a) is a schematic perspective view, and Figure 3(b) is a schematic cross-sectional view on a plane including the axis ω2. [Figure 4] Figure 4 is a schematic perspective view illustrating the stud and the metal material with a heat-resistant plate according to the present invention. MODE FOR CARRYING OUT THE INVENTION

[0009] The present invention will be described. The present invention provides a stud and a metal material with a heat-resistant plate, comprising: a metal material; a heat-resistant plate having information applied to a surface thereof and having a through-hole penetrating in a thickness direction thereof; and a stud including a shaft portion, a flange portion connected to the shaft portion and extending in a direction different from an axial direction of the shaft portion, and a layered insulating portion covering at least a part of a surface of the shaft portion, wherein the heat-resistant plate is fixed to a surface of the metal plate by welding a tip end of the shaft portion to the surface of the metal material in a state where the shaft portion and the insulating portion of the stud penetrate through the through-hole of the heat-resistant plate. Such a stud and metal material with a heat-resistant plate according to the present invention are hereinafter also referred to as the stud and metal material with a heat-resistant plate of the present invention.

[0010] The present invention also provides a method for manufacturing a stud and a metal material with a heat-resistant plate, comprising: a preparation step of preparing a metal material, a heat-resistant plate having information applied to a surface thereof and having a through-hole penetrating in a thickness direction thereof, and a stud including a shaft portion, a flange portion connected to the shaft portion and extending in a direction different from an axial direction of the shaft portion, and a layered insulating portion covering at least a part of a surface of the shaft portion; and a welding step of causing the shaft portion and the insulating portion of the stud to penetrate through the through-hole of the heat-resistant plate, and welding a tip end of the shaft portion to a surface of the metal material using a welding gun, to obtain the stud and the metal material with a heat-resistant plate of the present invention. Such a method for manufacturing a stud and a metal material with a heat-resistant plate is hereinafter also referred to as the manufacturing method of the present invention.

[0011] In the following, when the term "the present invention" is simply used, it shall refer to both "the stud and heat-resistant plate-attached metal material of the present invention" and "the manufacturing method of the present invention".

[0012] First, the metal material, heat-resistant plate and stud in the present invention will be described. Thereafter, the stud and heat-resistant plate-attached metal material, and the manufacturing method thereof will be described.

[0013] <Metal Material> In the present invention, the metal material is not particularly limited as long as at least a part thereof is made of metal. When a part is metal and the other parts are not metal, the stud will be welded to the metal part. It is preferable that the entire metal material is made of metal (a solid metal mass).

[0014] The type of metal is not limited. The metal material is preferably a mass containing iron as a main component, more preferably a steel material such as a steel plate, steel pipe, H-shaped steel, steel sheet pile, or steel bar, and may be a steel material at a high temperature (for example, about 1000 to 1200°C). The size, shape, etc., of the metal material are also not particularly limited.

[0015] For example, for forged products and cast products produced in iron and steel production processes, specifically steel materials (including intermediate materials) such as slabs, blooms, billets, wire rods, and aggregates thereof, the surface temperature measured by a radiation thermometer is usually about 1000 to 1200°C, and the metal material in the present invention may be such a high-temperature steel material. If any information is marked on the surface of such a high-temperature steel material using paint or the like, the burden on the operator is heavy, and there is also a risk that incorrect information is marked. In addition, the surface of high-temperature steel materials often has irregularities, and in such cases, it is difficult to mark the information on the surface using paint or the like. Therefore, it is preferable to attach a heat-resistant plate pre-marked with information as described later. In the case of stud welding, the stud can be firmly attached to the surface in a short time even if the surface has irregularities, so the burden on the operator is reduced even if the surface is at high temperature.

[0016] <Heat-resistant plate> Sometimes, it is desirable to attach information about a metal material to it. In such cases, it may be desirable to attach this information to a heat-resistant plate and then attach the heat-resistant plate to the metal material. Even if the metal material is high-temperature steel generated in the steel production process, the heat-resistant plate, which has heat-resistant properties, is less likely to be damaged.

[0017] The content of this information is not particularly limited and may include, for example, product number, information regarding the next process, or information regarding the delivery destination, as shown in heat-resistant plate 1 in Figure 1.

[0018] This information may be in text form, but it may also be attached as some kind of code, such as a barcode or QR code. In this invention, a heat-resistant plate with such information attached to its surface is fixed to the surface of a metal material via studs.

[0019] The method for applying information to the surface of the heat-resistant plate is not particularly limited; for example, the information may be printed or engraved on the surface of the heat-resistant plate. When information is printed on a heat-resistant plate, it is preferable that the ink used for printing is heat-resistant. When the metal material is at a high temperature, it is preferable that the information on the surface of the heat-resistant plate is printed using an ink that does not easily deteriorate at high temperatures. For example, information can be printed on the surface of the heat-resistant plate using a thermal transfer printer with an ink ribbon that can withstand high temperatures. As the heat-resistant plate, for example, the HP-L90 manufactured by YS Tech Co., Ltd. can be used. As the thermal transfer printer, conventionally known printers such as the M48PRO manufactured by Sato Holdings Co., Ltd. can be used.

[0020] In this invention, the heat-resistant plate has through holes that penetrate in the thickness direction. The through-hole only needs to allow the shaft and insulating portion of the stud, as described later, to pass through; other configurations are not particularly limited. Since the cross-section of the stud shaft is usually circular, it is preferable that the through-hole also be circular, with a diameter larger than the diameter of the stud's cross-section (circular). However, as long as the shaft and insulating portion of the stud can pass through, the through-hole may also be of a shape other than a circle, such as a triangle or square (polygon, etc.).

[0021] For example, the heat-resistant plate 1 shown in Figure 1 has one circular through-hole 3. Here, if the through-hole 3 is circular, let its diameter be h. If the heat-resistant plate has a single through-hole, the heat-resistant plate can be fixed to the surface of the metal material by passing the shaft and insulating portion of a single stud through the through-hole and welding the tip of the shaft to the surface of the metal material. As described later, it is preferable that the outer diameter of the flange portion (or its maximum diameter if it is not a circle) is larger than the diameter of the through-hole in the heat-resistant plate (or its maximum diameter if it is not a circle). Using a stud with such a flange portion allows for a more secure fixation of the heat-resistant plate to the surface of the metal material.

[0022] In this invention, the heat-resistant plate is preferably made of a material that does not deteriorate easily at high temperatures. For example, it may be made of a metal such as stainless steel.

[0023] The thickness of the heat-resistant plate is not particularly limited. If the heat-resistant plate is too thick, it becomes difficult to form through holes.

[0024] The size and shape of the heat-resistant plate are not particularly limited; for example, it may be rectangular, as shown in Figure 1. For example, it may be a rectangular heat-resistant plate with sides of several tens of millimeters.

[0025] <Stud> The present invention's stud will be described below. The stud of the present invention comprises a shaft portion, a flange portion, and an insulating portion.

[0026] Below, we will describe two preferred embodiments of the stud in the present invention, each of which will be explained using Figures 2 and 3. The examples shown in Figures 2 and 3 are designated as Embodiment 1 and Embodiment 2, respectively.

[0027] <Aspect 1> Figure 2 shows Embodiment 1, a preferred embodiment of the stud according to the present invention. Figure 2(a) is a schematic perspective view, and Figure 2(b) shows a schematic cross-sectional view in the plane containing its axis ω1.

[0028] The stud 11 in embodiment 1 has a shaft portion 111, a flange portion 112, and an insulating portion 113.

[0029] In embodiment 1, the shaft portion 111 is cylindrical. However, the shaft portion of the stud of the present invention may be columnar, and the cross-section in the direction perpendicular to its axis ω1 is not particularly limited. As shown in Figure 2, the cross-section may be circular, triangular, or other polygonal. Furthermore, screw threads may be formed on the surface of the shaft.

[0030] The stud 11 in the configuration shown in Figure 2 is set in the welding gun with the stud 11 passing through the through hole in the heat-resistant plate, and the tip 111 of the shaft portion 111 shown in Figure 2 X It is applied to the surface of the metal material and then welded.

[0031] The size of the shaft portion 111 is not particularly limited and may be the same as that of a stud used in conventionally known stud welding. The length of the shaft portion 111 in the longitudinal direction (direction parallel to the axis ω1) may be, for example, about 5 to 30 mm. The cross-sectional diameter of the shaft portion 111 may be, for example, about 3 to 15 mm.

[0032] The material of the shaft portion 111 is not particularly limited and may be the same as that of a stud used in conventionally known stud welding. The material of the shaft portion 111 may be, for example, steel, stainless steel, titanium, or iron. It may also be plated with copper or the like.

[0033] The flange portion 112 is connected to the shaft portion 111. Furthermore, the flange portion 112 extends in a direction different from the direction parallel to the axis ω1 of the shaft portion 111. Specifically, the tip 111 X The disc-shaped portion located at the opposite end is the flange portion 112 in Embodiment 1. In Embodiment 1, the flange portion 112 extends in a direction perpendicular to the axis ω1. In the case of embodiment 1, the shaft portion 111 is attached to the flange portion 112 such that the axis ω1 of the shaft portion 111 passes through the center of the disc-shaped flange portion 112.

[0034] In the embodiment 1 shown in Figure 2, the tip 111 of the shaft portion 111 X A disc-shaped flange portion 112 is attached to the opposite end, but the shaft portion 111 may also protrude from the side of the flange portion 112 opposite to the surface 112s facing the metal material.

[0035] It is preferable that the flange portion 112 has no boundary with the shaft portion 111. In other words, it is preferable that the flange portion 112 and the shaft portion 111 are continuous and integral. The shaft portion 111 and the flange portion 112 may be integrally cast together, or they may be formed separately and then attached by welding or the like. In either case, it is preferable that the flange portion 112 has no boundary with the shaft portion 111.

[0036] Furthermore, R1 is defined as the length of the flange portion 112 perpendicular to the axis ω1. If the flange portion 112 is not circular, the maximum value of this length is defined as R1. By making this length R1 larger than the diameter (h) of the through-hole in the heat-resistant plate, the heat-resistant plate can be more firmly fixed to the surface of the metal material.

[0037] The size of the flange portion 112 is not particularly limited. The length R1 of the flange portion 112 in the direction perpendicular to the axis ω1 may be, for example, about 5 to 25 mm.

[0038] Figure 2 shows an example where the flange portion 112 is disc-shaped, but the shape of the flange portion 112 is not particularly limited. For example, it may be a polygon such as a triangle, square, hexagon, or octagon.

[0039] The material of the flange portion 112 may be the same as the material of the shaft portion 111.

[0040] The insulating portion 113 is layered and covers at least a portion of the surface of the shaft portion 111. As shown in Figure 2, it is preferable that the insulating portion 113 covers the portion including the area near the boundary between the flange portion 112 and the shaft portion 111.

[0041] The length of the insulating portion 113a on the surface of the shaft portion 111 is not particularly limited. Preferably, the insulating portion 113a covers 5 to 95% of the longitudinal portion of the shaft portion 111, and more preferably, covers 60 to 90% of the portion.

[0042] Furthermore, in Figure 2, the flange portion 112 also has an insulating portion 113b on the surface 112s facing the metal material. In the present invention, it is not essential to have an insulating portion 113b on the surface 112s facing the metal material in the flange portion 112, but it is preferable to have an insulating portion on this surface 112s as shown in Embodiment 1 of Figure 2. Furthermore, as shown in Figure 2, it is even more preferable that the insulating portion 113b on the surface 112s of the flange portion 112 facing the metal material is connected to the insulating portion 113a on the surface of the shaft portion 111.

[0043] The material of the insulating part 113 (113a, 113b) is not particularly limited as long as it provides insulating properties to the insulating part 113. The material of the insulating part 113 may be, for example, silicone, nylon, or rubber. When attached to high-temperature materials, a heat-resistant material is desirable.

[0044] The insulating portion 113 (113a, 113b) is layered, but the thickness of the layer is not particularly limited, and is preferably, for example, 0.05 to 3 mm.

[0045] As mentioned above, the cross-sectional diameter of the shaft portion 111 and the thickness of the insulating portion 113 are not particularly limited, however, in the cross-section perpendicular to the axis ω1, the outer diameter (H1) of the insulating portion 113 must be smaller than the diameter (h) of the circular through hole in the heat-resistant plate.

[0046] After passing the shaft portion 111 and the insulating portion 113 through the through hole in the heat-resistant plate, set them in the welding gun, and the tip 111 of the shaft portion 111 X The heat-resistant plate is welded to the surface of the metal material. At this time, the inner surface (end face) of the through hole in the heat-resistant plate is in contact with the surface of the insulating part 113. In this case, the electricity generated from the welding gun flows only to the shaft portion 111 and flange portion 112 of one stud, and the tip 111 of the shaft portion 111 X Reached tip 111 X It is welded to the surface of the metal material. If the insulating part 113 of the present invention were not present, the electricity generated from the welding gun would pass from the shaft 111 through the heat-resistant plate to the tip 111. X It is possible that the current may reach other points. Specifically, for example, if the heat-resistant plate and the metal material come into contact, there is a possibility that electricity will flow to the metal material via the heat-resistant plate. In this case, the inventors have found that the heat-resistant plate may be damaged due to the generation of sparks or the like. Because the present invention has an insulating portion 113, the heat-resistant plate is hardly damaged.

[0047] <Aspect 2> Figure 3 shows Embodiment 2, a preferred embodiment of the stud according to the present invention. Figure 3(a) is a schematic perspective view, and Figure 3(b) shows a schematic cross-sectional view in the plane containing its axis ω2.

[0048] In embodiment 2, the stud 12 has a shaft portion 121, a flange portion 122, and an insulating portion 123.

[0049] In embodiment 2, the shaft portion 121 is cylindrical. However, the shaft portion of the stud of the present invention may be columnar, and the cross-section in the direction perpendicular to its axis ω2 is not particularly limited. As shown in Figure 3, the cross-section may be circular, triangular, or other polygonal. Furthermore, screw threads may be formed on the surface of the shaft.

[0050] The stud 12 of the embodiment shown in FIG. 3 is set in a welding gun in a state where it is passed through the through-hole of the heat-resistant plate, and the tip 121 of the shaft portion 121 shown in FIG. 3 X is brought into contact with the surface of a metal material and welded.

[0051] The size and the like of the shaft portion 121 are not particularly limited. The length in the longitudinal direction and the cross-sectional diameter of the shaft portion 121 may be the same as in the case of embodiment 1.

[0052] The material of the shaft portion 121 may be the same as the material of studs used in conventionally known stud welding, similarly to the case of embodiment 1.

[0053] The flange portion 122 is connected to the shaft portion 121. The flange portion 122 is a portion extending in a direction different from a direction parallel to the axis ω2 of the shaft portion 121. Here, it is preferable that there is no boundary between the flange portion 122 and the shaft portion 121. In other words, it is preferable that the flange portion 122 and the shaft portion 121 are continuously integrated. In the case of the stud 12 shown in FIG. 3, the tip 121 X and the portion including the tip on the opposite side is bent substantially in a direction perpendicular to the axis ω2 of the shaft portion 121. This bent portion is the flange portion 122. Therefore, the flange portion 122 and the shaft portion 121 are continuously integrated.

[0054] Further, let R2 be the length of the flange portion 122 in the direction perpendicular to the axis ω2. When this length R2 is made larger than the diameter (h) of the through-hole of the heat-resistant plate, the heat-resistant plate can be more firmly fixed to the surface of the metal material.

[0055] The size and the like of the flange portion 122 are not particularly limited. The length R2 of the flange portion 122 relative to the axis ω2 may be, for example, about 5 to 25 mm.

[0056] The material of the flange portion 122 may be the same as the material of the shaft portion 121.

[0057] The insulating portion 123 is layered and covers at least a portion of the surface of the shaft portion 121. As shown in Figure 3, it is preferable that the insulating portion 123 covers the portion including the area near the boundary between the flange portion 122 and the shaft portion 121. Furthermore, although Figure 3 does not show an insulating portion on the surface of the flange portion 122 facing the metal material, it is preferable that an insulating portion be present on this surface as well. It is even more preferable that an insulating portion be present on the entire surface of the flange portion 122. Here, it is even more preferable that the insulating portion on the surface of the flange portion 122 facing the metal material and the insulating portion 123 on the surface of the shaft portion 121 are connected.

[0058] The material of the insulating part 123 is not particularly limited, as long as it provides insulating properties to the insulating part 123, as in the case of embodiment 1.

[0059] The length of the insulating portion 123 is not particularly limited and may be the same as in the case of Embodiment 1.

[0060] The insulating portion 123 is layered, but the thickness of the layers is not particularly limited and may be the same as in the case of Embodiment 1.

[0061] As mentioned above, the cross-sectional diameter of the shaft portion 121 and the thickness of the insulating portion 123 are not particularly limited, however, in the cross-section perpendicular to the axis ω2 of the shaft portion 121, the outer diameter (H2) of the insulating portion 123 must be smaller than the diameter (h) of the circular through hole in the heat-resistant plate.

[0062] After the shaft portion 121 and the insulating portion 123 are passed through the through hole in the heat-resistant plate, the tip 121 of the shaft portion 121 X The heat-resistant plate is welded to the surface of the metal material. At this time, the inner surface (end face) of the through hole in the heat-resistant plate is made to be in contact with the surface of the insulating part 123. In this case, the electricity generated from the welding gun flows only to the shaft portion 121 and flange portion 122 of one stud, and the tip 121 of the shaft portion 121 X Reached tip 121 X It is welded to the surface of the metal material. If the insulating part 123 of the present invention were not present, the electricity generated from the welding gun would pass from the shaft 121 through the heat-resistant plate to the tip 121. X It is possible that the current may reach other points. Specifically, for example, if the heat-resistant plate and the metal material come into contact, there is a possibility that electricity will flow to the metal material via the heat-resistant plate. In this case, the inventors have found that the heat-resistant plate may be damaged due to the generation of sparks or the like. Because the present invention has an insulating portion 123, the heat-resistant plate is hardly damaged.

[0063] Next, the stud and heat-resistant metal material of the present invention will be described with reference to Figure 4. Figure 4 is a schematic perspective view illustrating the stud and heat-resistant metal material of the present invention. The studs and metal material with heat-resistant plates of the present invention are not limited to the embodiments shown in Figure 4.

[0064] In Figure 4, the metal material 30 with studs and heat-resistant plate of the present invention comprises the heat-resistant plate 1 shown in Figure 1, the studs 11 shown in Figure 2, and the metal material 20.

[0065] The heat-resistant plate 1 is as shown in Figure 1, has information printed on its surface, and has through holes that penetrate in the thickness direction.

[0066] The stud 11 is in the configuration shown in Figure 2, with its shaft portion 111 and insulating portion 113a passing through a through hole in the heat-resistant plate 1, and the tip 111 of the shaft portion 111 X The surface 20 of the metal material 20 X It is welded to it. The welding method is not particularly limited, but it is preferable that it is stud welded using a short-cycle method or a CD method.

[0067] In the present invention, the metal material 30 with a stud and heat-resistant plate has the tip 111 of the shaft 111 of the stud 11 that penetrates the through hole in the heat-resistant plate 1. X the surface 20 of the metal material 20 X This is a metal material with a stud and a heat-resistant plate, which are welded to each other to secure the heat-resistant plate 1 so that it does not come off.

[0068] Such metal materials with studs and heat-resistant plates according to the present invention can be manufactured by the manufacturing method of the present invention. The manufacturing method of the present invention comprises a preparation step and a welding step.

[0069] In the preparation step, the metal material, the heat-resistant plate as illustrated in Figure 1, and the stud as illustrated in Figure 2 or Figure 3 are prepared.

[0070] In the welding process, the shaft and insulating portion of the stud are passed through the through-holes in the heat-resistant plate, and the tip of the shaft is welded to the surface of the metal material using a conventionally known welding gun. At this time, the inner surface (end face) of the through-hole in the heat-resistant plate should be in contact with the surface of the insulating part. In this case, the electricity generated from the welding gun flows only to the shaft and flange portions of a single stud, reaching the tip of the shaft, which is then welded to the surface of the metal material. If the insulating portion of the present invention were not present, electricity generated from the welding gun could pass from the shaft through the heat-resistant plate and reach areas other than the tip. Specifically, for example, if the heat-resistant plate and the metal material come into contact, electricity could flow to the metal material via the heat-resistant plate. In this case, the inventors have found that the heat-resistant plate may be damaged due to the generation of sparks or the like. Because this invention has an insulating portion, the heat-resistant plate is hardly damaged. [Explanation of Symbols]

[0071] 1 Heat-resistant plate 3 Through hole 11, 12 studs 111, 121 Shaft section 111 X , 121 X tip of the shaft 112, 122 Flange section 112s, 121s Surfaces facing the metal material in the flange portion 113, 113a, 113b, 123 Insulation part 20 Metal materials 20X surface of metal material 30 metal materials with studs and heat shields ω1, ω2 axis h Diameter of the through hole Outer diameter of H1 and H2 insulating section Outer diameter of R1 and R2 flange sections

Claims

1. Metal materials, A heat-resistant plate having information printed on its surface and through holes that penetrate in the thickness direction, A stud comprising a shaft portion, a flange portion connected to the shaft portion and extending in a direction different from the axial direction of the shaft portion, and a layered insulating portion covering at least a part of the surface of the shaft portion, It has, A stud and a metal material with a heat-resistant plate, wherein the tip of the shaft portion of the stud is welded to the surface of the metal material, with the shaft portion and the insulating portion of the stud passing through the through hole in the heat-resistant plate, thereby fixing the heat-resistant plate to the surface of the metal material.

2. The stud and metal material with heat-resistant plate according to claim 1, wherein the flange portion also has the insulating portion on the surface facing the metal material.

3. Metal materials, A heat-resistant plate having information printed on its surface and through holes that penetrate in the thickness direction, A stud comprising a shaft portion, a flange portion connected to the shaft portion and extending in a direction different from the axial direction of the shaft portion, and a layered insulating portion covering at least a part of the surface of the shaft portion, The preparation process for preparing, A welding step to obtain a metal material with a stud and heat-resistant plate according to claim 1 or 2, by passing the shaft portion and the insulating portion of the stud through the through hole in the heat-resistant plate, and welding the tip of the shaft portion to the surface of the metal material using a welding gun, A method for manufacturing a metal material with studs and heat-resistant plates, comprising:

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