WO2005092557A1

WO2005092557A1 - Friction cladding rod, friction cladding method, metal laminated sheet, and method of manufacturing metal laminated sheet

Info

Publication number: WO2005092557A1
Application number: PCT/JP2005/006419
Authority: WO
Inventors: Hiroshi Tokisue; Kazuyoshi Katoh
Original assignee: Nihon University
Priority date: 2004-03-25
Filing date: 2005-03-25
Publication date: 2005-10-06
Also published as: JP4941969B2; TW200539975A; JPWO2005092557A1

Abstract

A friction cladding rod formed in a hollow bar-like material, a friction cladding method capable of uniformizing the width and thickness of friction cladding by utilizing the friction cladding rod, a metal laminated sheet, and a method of manufacturing the metal laminated sheet by rolling the surface of a metal on which the friction cladding is applied.

Description

Description Friction overlay rod, friction overlay method, metal laminate and manufacturing method of metal laminate

The present invention relates to a friction overlay, a friction overlay, a metal laminate, and a method for manufacturing a metal laminate.

Background art

Conventionally, as a method of joining metal members, there has been widely used a joining method by heating and pressurizing utilizing frictional heat generated on a friction surface by rotating the member while the members to be joined are brought into contact with each other. Are known. It is also known that when welding dissimilar metals, the welding material is surfaced in consideration of the metal base material. In this case, the friction build-up pad is rotated and brought into contact with the welded portion to form a friction build-up. According to this method, the surface of the tool is also modified, and it is said that the cost is low and the thermal strain is small (Patent Document 1 Japanese Patent Application Laid-Open No. 9-226688).

The present inventors formed a build-up material by friction-building aluminum or an aluminum alloy on the surface of a metal plate laminated on aluminum or an aluminum alloy, and joined the metal plate with the build-up material. The invention of an aluminum laminated plate or an aluminum alloy laminated plate was carried out by rolling an aluminum laminated plate or an aluminum alloy laminated plate having a constant thickness by cutting. No. 0 3—3 1 1 3 1 5).

In forming the friction overlay, a thermal spray is applied to the surface of the aluminum product, and the resulting thermal spray coating layer is subjected to friction overlay to form a hard overlay. (Patent Document 3 Japanese Patent Application Laid-Open No. 10-15675).

When friction overlaying is performed on a material having a flat surface, the overlay width is larger than the diameter of the friction overlay rod. In addition, there is a problem that the height of the overlay is not fixed. In such a case, a groove is provided, and a friction overlay rod in which the rod diameter of the friction overlay rod is larger than the groove width of the groove is also used (Patent Document 4 Japanese Patent Application Laid-Open No. 2000-117). 464, Patent Document 5 Japanese Patent Application Laid-Open No. 2000-131380). Also titanium The rod diameter of titanium rods or titanium alloy rods is also limited from the viewpoint of improving the strength of the joints by friction welding and obtaining high reliability using rods or titanium alloy rods (Patent Document 6). Japanese Patent Application Laid-Open No. 2003-142424).

The friction overlay method is a solid-phase surface modification technology using frictional heat, which enables high-speed thin film formation with little dilution without melting the material, and enables easy formation of a thick film layer. The present inventors have also developed a good overlay method and overlay material [Non-Patent Document 1 Outline of the 98th Spring Meeting of the Japan Institute of Light Metals, (20000), 2 8 3].

However, in order to ensure that the friction hardfacing material adheres to the hardfacing material as efficiently and evenly as possible when performing friction hardfacing, what kind of structure and shape of the friction hardfacing material are required? Whether it should be taken has not yet been fully considered. The development of the structure and shape of the friction overlay, supported by the results of such research, is desired. Also, if the width and thickness of the friction overlay can be made uniform, it will work effectively in using the friction overlay, and the next processing after the friction overlay, for example, the rolling process will be good. It can be done at the same time.

In view of the above, there is a need for the development of a friction overlaying method that can perform uniform width and thickness of the friction overlay. Prior art documents related to the invention of the present application include the following, which are incorporated herein by reference.

1. Japanese Patent Application Laid-Open No. 9-262686

2. Japanese Unexamined Patent Publication No. 2003-3111

3. Japanese Patent Application Laid-Open No. 10-156057

4. Japanese Unexamined Patent Application Publication No. 2000-0—1 1 7 6

5. Japanese Patent Application Laid-Open No. 2000-01-138070

6. Japanese Patent Publication No. 2003-144

7. Outline of the 98th Spring Meeting of the Japan Institute of Light Metals, (200000), 283 page An object of the present invention is to provide a new friction overlay, a new friction overlay method using the same, a metal laminate using the new friction overlay, and a method for manufacturing a metal laminate. is there. The present inventors have observed the progress of friction welding between a pipe and a plate. According to the results at that time, the Paris of the joint occurred only from the pipe, and almost no deformation was observed on the plate side. Burrs are discharged inside and outside as in the case of pressure welding between pipes.The inner burrs are larger than the outer burrs, and both the inner and outer burrs tend to increase as the friction time increases. I found it (Vol. 41 of Light Metal, February issue (1991), page 810). These findings relate to friction welding and are different from friction overlay in their operation mode.The results show that when a hollow head is used for friction overlay, It is impossible to judge whether such a result will be obtained.

Conventionally, friction cladding rods have been solid cylinders. The present inventors studied the above-mentioned problem, and in a method of friction overlaying by bringing a friction overlay pad into contact with the surface of a metal plate while rotating the friction overlay, this was formed into a hollow rod shape, and the friction overlay was formed. Surprisingly, the use of a build-up rod makes it possible to surprisingly and uniformly form a thin, thin and frictionless surface on the surface of a metal plate. It was found that the built-in overlay was used again as a friction overlay, contributing to the formation of a lean overlay.

Obtaining such good results was surprising even in light of the above findings of the present inventors.

Utilizing this new finding, conventional friction overlaying can be performed more effectively. The friction overlay rod used for friction overlaying on a plate made of one metal material can use the same metal material as the above-mentioned plate material, or can use a different metal material. This method of friction overlaying on the surface of a metal plate material can be adopted as a method of repairing a metal surface, a high-pressure processing device, or a reaction device using friction overlaying.

It is also possible to hot-roll the friction-plated metal sheet to produce a metal laminate. it can. The metal laminate thus obtained has a delicate structure in both the overlay and the base, and the center of the overlay is occupied by the overlay due to the difference in the thickness of the overlay before rolling. A difference was observed in the thickness of the embossed portion, and it was confirmed that the ratio of the thickness of the cladding layer to the thickness of the base material before and after the rolling was almost equal. The joining surfaces of the metal plates to be laminated on the metal plate were in close contact with each other. As a result of the tensile test of the metal laminate, the results of the n value, the plastic strain ratio r, and the ear ratio of the metal laminate were also satisfactory and sufficiently satisfactory. From these results, the metal laminate obtained in the present invention can have unique properties. That is, it is possible to provide the metal characteristics that make the front and back surfaces of the metal laminate different. At that time, the thickness of the metal plate serving as the front surface and the thickness of the metal plate serving as the back surface can be appropriately adjusted. By utilizing this fact, a thin and hard surface layer can be formed on the front surface, and a thick and soft back layer can be formed on the back surface. For example, a hard and thin surface layer made of an aluminum alloy such as jolarmin can be formed, and a metal laminate made of a soft and thick aluminum layer can be formed on the back surface. In addition, it is possible to manufacture laminated boards having different colors and light reflectances due to differences in material characteristics. In addition, by manufacturing a multilayer metal plate, a metal plate having more complicated characteristics can be manufactured by laminating a metal plate different from the front and rear surface metal plates in the middle part.

According to the present invention, the following inventions are provided.

(1) A friction build-up pad characterized by being a hollow rod.

(2) The method for friction overlaying on the surface of a metal plate by bringing the friction overlay into contact with the surface of the metal plate while rotating the friction overlay on the surface of the metal plate. A friction overlaying method characterized by friction overlaying a metal on the surface of a metal plate using a metal.

(3) The surface of the metal plate is frictionally clad on the surface of the metal plate by contacting the surface of the metal plate in a rotating state with the friction build-up pad made of a hollow rod-like material as claimed in claim 1 and frictionally clad. A metal laminate obtained by rolling a metal surface.

(4) A friction build-up pad made of the hollow rod-shaped material according to claim 1 is rotated and touched on the surface of the metal plate to form a friction build-up on the surface of the metal plate. A method for producing a metal laminate, comprising rolling the treated metal surface. Brief Description of Drawings

FIG. 1 is a view showing the results of friction overlaying of a pipe and a rod.

FIG. 2 is a view showing a state of a built-up portion and a base material portion of the metal laminate.

FIG. 3 is a view showing a tensile test result of the metal laminate.

FIG. 4 is a diagram showing the η value of the metal laminate.

FIG. 5 is a diagram showing the r value of the metal laminate.

FIG. 6 is a diagram showing a relationship between a critical deep drawing ratio of a metal laminate and a blank pressing load.

FIG. 7 is a diagram showing a comparison of ear ratios for a multi-layer laminate in the case of a base material and a single layer. BEST MODE FOR CARRYING OUT THE INVENTION

In the present invention, this is a method of friction overlaying on the surface of a metal plate.

As a material for friction overlaying, a material for friction overlaying, such as aluminum or an aluminum alloy, titanium or a titanium alloy, is appropriately selected. An aluminum plate, an aluminum alloy plate, a steel plate, a stainless steel plate, a copper plate, or the like can be appropriately used as a metal plate for the material to be filled with friction.

This plate material is appropriately selected from metal plates. For example, when aluminum or aluminum alloy has the characteristics of being lightweight or resistant to corrosion, which are favorable as industrial materials, but the characteristics are not sufficient in terms of strength against the intended use. For example, by using a stainless steel sheet as a sheet material, the special properties of aluminum aluminum alloy can be imparted with properties such as toughness and corrosion resistance that aluminum does not have. Can be.

By focusing on the properties that aluminum and aluminum alloys do not have, and using them as plate materials, it is possible to provide desirable properties that aluminum and aluminum alloys do not have Can be.

In the present invention, as described above, a metal plate to be laminated on aluminum, an aluminum alloy, titanium, or a titanium alloy is selected, and aluminum or an aluminum alloy is friction-coated on the surface of the metal plate. In the present invention, when overlaying on the surface of the conventional plate material, it is necessary to perform overlaying on the surface of a wide range of plate material, and for that purpose, friction overlaying is performed. The operation is performed as follows.

In the present invention, a hollow rod is used as the friction overlay rod. The rods mean round bars and square bars. Round bars and square bars have a hollow portion inside. The shape of the hollow part is a cylindrical shape if it is a round bar, and a prismatic shape of the same shape if it is a square bar. Although it is possible to make the shape of the hollow part square with respect to the round bar, it cannot be said that it is convenient considering processing, which is not appropriate. Similarly, it is possible to make the hollow portion into a square shape and make it into a cylindrical shape, but this is not appropriate. Regarding the shape of the cylindrical portion, which is the hollow portion of the round bar, the diameter of the circle to be used can be appropriately determined in consideration of the width of friction overlaying. In addition, the thickness can be appropriately determined in consideration of the thickness of the overlay, and the like.

According to the findings of the present inventors, if the diameter of the hollow portion of the round bar is too small, good results cannot be obtained on the contrary. For this reason, the inner diameter of the hollow is required to be 1/3 or more of the outer diameter with respect to the outer diameter, and the effect described above cannot be expected if the diameter is less than 1/3. The effect can be expected with 1 or 2 or more. The upper limit is not specified as long as it is within the range that can maintain the strength that the hollow cladding pad can withstand. If the outer diameter is about 4Z5, it is enough. In order to manufacture a friction bar with a hollow rod shape, a known method such as a molding method using a 鎳 mold, bending into a tubular shape, welding the ends, and hollowing out the inside are adopted. .

In order to build up the friction, a rotating member that is a hollow rod-shaped metal that is to be built on the metal plate is brought into contact with the metal plate, and the rotation of the rotating member generates frictional heat and the metal that is to be built up at the same time. In a molten state, and the surface of the metal plate is overlaid. The rotation can be used as long as a specific rotation operation can be performed.

The metal used is used as a rotating member and fixed to the rotating shaft. The rotating shaft is fixed to the rotor so that high-speed rotation can be obtained by exciting the stator. The rotating member can be used by pushing down when used. The area of the joint can be adjusted by changing the size of the rotating member. If the rotating member has a large diameter, a large joining area can be obtained. For this reason, the size of the rotating member can be appropriately determined in consideration of the area of the joint and the like.

When performing friction overlay on a plate, a rotating member is brought into contact with the surface of the plate, the rotating member is rotated at a required speed, and heat generated by friction generated at that time is used. The amount of heat generated by friction is given as the product of the coefficient of friction between the plate and the rotating member, the rotation speed, and the pressure when the rotating member is pressed against the plate.

The rotation speed of the rotating member is generally in the range of about 100 to 600 rpm. Pressure rotating member presses the sheet material, if 0. 5~ 5 kg / mm ² extent is sufficient.

It is effective to perform the coating on the friction overlay. In this case, it is effective to preheat the hollow cylinder and the metal in advance. Heating is performed to a temperature below the melting point. When manufacturing aluminum or aluminum alloy laminates, it is effective to set the temperature to about 450 to 550 ° C. It is.

In the present invention, when one more metal plate is pasted on one metal plate, further, when one more metal plate is pasted on two metal plates, It is important to apply friction overlay on the entire surface of the sheet material.

The thickness of the friction overlay can be determined as appropriate in consideration of the required thickness of the laminated plate.

First, after the friction overlaying, the surface can be subjected to friction overlaying with another metal. In this way, a laminate of three or more layers can be obtained. As a result, it is possible to produce a composite material having higher properties. The thickness of the obtained metal sheet is determined according to the required application, and the operating conditions of the rolling mill are determined to achieve that thickness, or the thickness before the rolling mill is determined. The degree of the above-mentioned friction overlay is determined according to the result. Usually, a metal plate material of 10 mm or less, and further, 5 mm or less is used. There is no problem with the thickness limit as long as it can be overlaid. It can be as thin as 1 mm. Depending on this thickness, how much before the rolling mill, Is considered. In addition, the degree of friction overlay is determined.

After the friction overlay is performed in this way, if necessary, the start and end of the overlay are cut off and cut to a specific thickness. This step is not always necessary because the friction overlay can be made thin and uniform. The thickness of the overlay to be processed at that time is determined as appropriate. Next, by performing hot rolling, a metal laminate having a desired thickness can be obtained. Thicknesses of 1 mm or less and about 0.5 mm depending on the intended use can be obtained. After performing the friction overlay in this manner, the start and end portions of the overlay are cut off and cut to a specific thickness. Its thickness is determined as appropriate. Next, by performing hot rolling, a metal laminate having a desired thickness can be obtained. The thickness is less than lmm, and it can be about 0.5mm depending on the purpose of use.

The metal laminate obtained in this way has a delicate structure in both the cladding portion and the base portion, and the center of the cladding portion occupies the metal cladding due to the difference in the thickness of the cladding layer before rolling. There was a difference in part thickness, and it was confirmed that the ratio of the thickness of the build-up layer to the thickness of the base material before and after rolling was almost the same. The bonding surfaces of the metal plates to be laminated on the metal plate were in close contact with each other, and there was no disturbance in the structure, and it was confirmed that this was a good bonding means. As a result of the tensile test of the metal laminate, the results of the n value, the plastic strain ratio r, and the ear ratio of the metal laminate were also good, and were sufficiently satisfactory. From these results, the metal laminate obtained in the present invention can have unique properties. That is, it is possible to impart the characteristics of the metal that is different between the front surface and the back surface of the metal laminate. At that time, the thickness of the metal plate serving as the front surface and the thickness of the metal plate serving as the back surface can be appropriately adjusted.

For example, the aluminum laminate thus manufactured, or a laminate made of aluminum and an aluminum alloy, has a sufficient adhesive strength as compared with the adhesive strength of a metal laminate manufactured by another method. In addition, there is no formation of an oxide film on the surface, and there is no peeling of the build-up layer and the base material during and after rolling, and there is no possibility of corrosion. In addition, there is no lack on both sides due to cracking, scoring, etc. The aluminum and aluminum alloy plate laminate of the present invention For various industrial applications, it is superior to aluminum and anolemminium alloy sheet laminates obtained by other conventionally known manufacturing methods. In addition, the contents described in Japanese Patent Application No. 2004-0889670 and Japanese Patent Application No. 2005-082087 are all taken in at the beginning of the favorite. Example

Hereinafter, the content of the present invention will be described more specifically with reference to examples.

The present invention is not limited to the following examples. Example 1

As a build-up metal, a commercially-available hollow rod-shaped 505-2 aluminum pipe (diameter 27 mm, hollow inner diameter 18 mm) cut into a length of 112 mm was used. The base material used was a 5052 aluminum alloy plate (H34, plate thickness 5 mm) machined to a width of 50 mm and a length of 150 mm. An NC-controlled fully automatic friction welding machine was used for friction overlaying.

N = 250 rpm, P = 30 MPa, and f = 13 mm / s.

In the heating process, after the pipe and the plate material substrate came into contact with each other, the pipe was preheated to about 500 ° C for 3 seconds at the friction start position. After that, the table was fixed on the base material and fed to the table to build up.

As a comparative example, a commercially available 50052 aluminum solid rod (diameter: 2 O mm) cut to a length of 108 mm was used. As the base material, a 5052 aluminum alloy plate (H34, plate thickness 5 mm) machined to a width of 5 Omm and a length of 150 mm was used.

An NC controlled fully automatic friction welding machine was used for friction overlaying.

In the heating step, after the round bar and the plate material substrate came into contact with each other, they were preheated to about 500 ° C for 3 seconds at the friction start position. After that, a feed was given to the table on which the base material was fixed, and overlaying was performed.

N = 250 rpm, P = 30 MPa, and f = 13 mm / s. The surface efficiency of the pipe of the present invention was 55%, and that of the solid rod of the comparative example was 25%.

The width of the pipe of the present invention was 28 mm, and the solid rod of the comparative example was 20 mm.

The length of the pipe of the present invention was 111 mm, and that of the solid rod of the comparative example was 108 mm.

The thickness of the pipe of the present invention was 2 mm, and that of the solid rod of the comparative example was 1 mm.

The results are shown in FIG. In the case of the present invention, it was possible to observe a state where the coating was widely and uniformly overlaid. Example 2

505 2 aluminum alloy plate (H34, plate thickness 5 mm) as base material to 50 mm width and 150 mm length, 210 17 aluminum cladding as overlay metal A hollow cylinder of cylindrical alloy (diameter of cylinder: 20 ram, hollow inner diameter: 7 mm) was machined to a length of 100 mm. The mechanical properties of each material are as shown in Table 1 below.

A numerically controlled fully automatic friction welding machine was used for multi-layer friction overlaying. The build-up conditions were as shown in Table 2 below. The build-up material tended to be biased toward the side where the direction of rotation of the build-up metal and the build-up direction were opposite (Retreat aintsngsid: hereinafter also referred to as R S. On the other hand, the opposite side was also referred to as Advanc ingside: AS). For this reason, the second layer of the multi-layer cladding was clad with the second layer of the cladding metal, with the center of the cladding metal given a phase of 5, 10 and 15 mm to RS and AS, respectively. (Hereinafter, the symbol given RS with a phase of 15 mm is indicated by the symbol G = RS15.)

In addition, after the first layer was overlaid in order to keep the build-up state constant, the second layer was overlaid once cooled to room temperature. After the cladding, and after cooling, the second layer was clad. After overlaying, a laminated plate with a final thickness of 1 mm was prepared by hot rolling (623 K). The obtained laminate was observed for structure and subjected to a tensile test (test specimens were taken from the 0 °, 45 °, and 90 ° directions with respect to the rolling direction), along with the work hardening coefficient n value and plastic strain ratio r. The values were measured and a deep drawing test was performed. table 1

Table 2

The results are as follows.

The laminate of the metal laminate thus obtained shows a delicate set and appearance in both the overlay and the base, and the center of the overlay is due to the difference in the thickness of the overlay before rolling. A difference was found in the thickness of the cladding portion occupied by the metal laminate, and it was confirmed that the ratio of the thickness of the cladding layer to the thickness of the base material before and after rolling was almost the same (Fig. 2). The figure shows (a) the case of a single layer overlay, (b) the second layer with a phase of 0 mm applied to RS and AS, and (c) This figure shows the case where the second layer is subjected to cladding by giving RS a phase of 15 m. This indicates that the laminate was successfully rolled by friction overlaying.

FIG. 3 shows the tensile test results of the metal laminate. In the tensile test of the metal laminate, no clear difference was observed in the tensile strength in the 0 ° and 90 ° directions depending on the magnitude of the phase. The tensile strength was improved by increasing the phase in the 45 ° direction. Elongation was reduced by increasing the phase in the 45 ° direction. The extension in the 90 ° direction was improved by setting the phase to R S, and decreased when the phase was set to A S.

Fig. 3 shows the case where the horizontal axis is given a phase of 5, 10 and 15 mm for RS and AS, respectively, and the vertical axis shows the tensile test (σ, left side) and elongation (ε, right side). I have.

Fig. 4 shows the η value of the metal laminate, and Fig. 5 shows the r value of the metal laminate. By condition The measurement results of the rolled rolling are also shown.

The horizontal axis of FIG. 4 indicates the test pieces taken from the 0 °, 45 °, and 90 ° directions with respect to the rolling direction, and the vertical axis indicates the n value. Mase Meta 1 is the result for the base material only, Mo nolayerdeposit is the result for the single layer overlay, G = 0 is for the RS phase of 0, and G = AS 15 Indicates the case where the phase of AS is 15 mm, and G = RS 15 indicates the result of each overlay having the phase of RS of 15 mm.

The horizontal axis in Fig. 5 is the same as in Fig. 4, and the test specimens are test specimens taken from the 0 °, 45 °, and 90 ° directions with respect to the rolling direction, and the vertical axis is the r-value. Is shown. M M 1 1 のみ 1 1 結果 M M M M 層肉 M M M M M M M M M M M M M M M M M M 5 is the case where the phase of AS is 15 mm, and G = RS 15 shows the result of each overlay where the phase of RS is 15 mm.

Regarding the work hardening coefficient n value, the difference depending on the specimen sampling direction was small under all conditions, and in the multilayer laminate, the difference due to the phase direction of the second layer was hardly observed. The n-value of the multilayer metal laminate was higher than that of the single-layer metal laminate, but was slightly lower than the rolling ratio of the substrate.

The plastic strain ratio r showed a high value in the 45 ° direction under all conditions. Similarly to the n value, the r value of the multilayer metal plate showed an intermediate value of the rolling ratio between the single-layer metal laminate and the base material, but the difference was small and no difference was observed depending on the phase direction. It is thought that by increasing the phase of the second layer when multi-layer overlaying is performed, the area of the overlay can be increased, leading to labor savings.

Although not shown in the figure, the in-plane anisotropy Δr value calculated from the r value becomes negative due to the large r value in the 45 ° direction under all conditions, and there is a clear difference due to the magnitude of the phase. Was not recognized.

FIG. 6 shows the relationship between the critical deep drawing ratio (LDR: Limitngddrawwinngratio) obtained by the deep drawing test and the plank holding load. The horizontal axis is the critical deep drawing ratio, and the vertical axis is the blank holding load.

Mase Metal is the result when only the substrate is used. eposit is the result for a single-layer build-up, G = 0 when the phase of RS is 0, G = AS 15 when the phase of AS is 15 mm, and G = RS 1 5 shows the result of each overlay with an RS phase of 15 mm.

Regarding the results, the curves showed a similar tendency under all conditions except G = 0, which gave no phase. At G = 0, the LDR at a plank holding load of 4.9 kN was low, but the LDR was improved by increasing the blank holding load. It was clarified that all laminates had almost the same formability as the base metal.

The fracture in the deep drawing test was at the shoulder of the punch, and no peeling of the build-up portion and the substrate at the fracture was observed, and the substrate was completely integrated. In all the obtained cup values, ears were observed in the 45 ° direction corresponding to the n value and the r value.

FIG. 7 shows a comparison of the ear ratio in the case of the base material alone, in the case of the single-layer stack, and in the case of the stack in which S and AS were given phases of 15, 0 and 15 mm. According to the measurement result of the cup ear ratio by the deep drawing test, the ear ratio of the single-layer laminate having the highest n-value and r-value was high, and the rolled plate of the base material was lowest. There was no clear difference in the ear ratio of the multilayer laminate depending on the phase direction. From the above results, even if a single layer is overlaid, if the ear ratio obtained from this result is sufficient for use as a laminated board, and if the multilayer is overlaid, In this method, the ear ratio can be reduced as compared with the case where a single layer is built up, and it can be sufficiently used as a multilayer laminate. Industrial applicability

According to the present invention, as a result of using the hollow cylindrical friction overlay pad, it is possible to perform the overlay uniformly and efficiently. As a result, it can be used as a repair method for metal surfaces, high-pressure processing equipment and reaction equipment. The metal plate on which the friction overlay is formed can be hot-rolled to produce a metal laminate. The metal laminate obtained in this way has a delicate structure in both the overlay and the base, and the center of the overlay has a reduced thickness due to the difference in the thickness of the overlay before rolling. Adjustment can be appropriately performed, and a metal laminate having the characteristics of the metal plate to be formed can be manufactured.

Claims

The scope of the claims

1. A friction build-up rod characterized by a hollow rod.

2. A method of friction-fading on a surface of a metal plate by bringing a friction-facing pad into contact with a surface of a metal plate while rotating the friction-facing pad, A friction overlaying method, which comprises overlaying metal on the surface of a metal plate using an overlay rod.

3. The surface of the metal plate was frictionally clad on the surface of the metal plate by contacting the surface of the metal plate in a rotating state with the friction build-up pad made of the hollow rod-shaped material according to claim 1, and the surface was friction-coated. A metal laminate obtained by rolling a metal surface.

4. The surface of the metal plate was friction-faded on the surface of the metal plate by contacting the surface of the metal plate in a rotating state with the friction build-up pad made of a hollow rod-like material according to claim 1. A method for producing a metal laminate, comprising rolling a metal surface.