WO2021240696A1

WO2021240696A1 - Continuous casting mold and method for manufacturing continuous casting mold

Info

Publication number: WO2021240696A1
Application number: PCT/JP2020/020977
Authority: WO
Inventors: 潤平徳本; 浩郁森園; 正人高田; 圭祐山本; 喬玄鬼木
Original assignee: 三島光産株式会社
Priority date: 2020-05-27
Filing date: 2020-05-27
Publication date: 2021-12-02
Also published as: JPWO2021240696A1; JP7489458B2

Abstract

The present invention pertains to: a continuous casting mold used in manufacture of steel or the like; and a manufacturing method for the continuous casting mold. A coating layer 12 of a self-melting alloy is formed, by laser cladding, on a molten steel contact surface of a base material 10 of a continuous casting mold, the coating layer containing less foreign matter, being densely formed and having excellent adhesion to the base material 10. Due to the foregoing, a continuous casting mold having excellent durability against heat, corrosion and friction can be obtained.

Description

Manufacturing method of mold for continuous casting and mold for continuous casting

The present invention relates to a method for manufacturing a mold for continuous casting and a mold for continuous casting used for manufacturing steel and the like, and more specifically, for a mold for continuous casting and a mold for continuous casting having excellent heat resistance, corrosion resistance and abrasion resistance. Regarding the method of manufacturing a mold.

Conventionally, in order to improve the wear resistance of the continuous casting mold, the molten steel contact surface (inner surface) of the base material (copper plate) is coated by plating and / or thermal spraying.
Then, in order to improve corrosion resistance, impact resistance, etc., various studies have been conducted on plating and thermal spraying materials, manufacturing conditions, and the like.
For example, in Patent Document 1, in a method for manufacturing a mold for continuous casting in which a roughened base plating layer and a sprayed coating are sequentially formed on the contact surface side of molten steel, Co: 5% by mass or more and 15% by mass or less. , Cr: Granular cermet material composed of 2% by mass or more and 6% by mass or less, and the balance WC, and a granular Ni—Al alloy containing Al of more than 0 and 8% by mass or less are mixed and formed. Moreover, sprayed particles containing 20% by mass or more and 60% by mass or less of the whole as a Ni—Al alloy are sprayed by a flame sprayer to form a sprayed coating in which the Ni—Al alloy is present at the grain boundaries of the cermet material. .. Further, Patent Document 2 is a method of coating a self-soluble alloy with a (semiconductor) laser beam, which irradiates a powder material to be a material of a coating layer with a laser beam to directly coat a base material.
However, plating has the disadvantages that the construction time is long and large-scale equipment is required. Further, although the construction time is short, thermal spraying has a drawback that the copper plate is thermally deformed due to the influence of high temperature heat treatment, and the dimensional accuracy and flatness accuracy are liable to decrease. The thermal spray coating described in Patent Document 1 is a type that does not require high-temperature heat treatment after the film is applied, and is in a point of ensuring strong adhesion to the base material and the base material as compared with the type that is heat-treated after the film is applied. There was a challenge.
On the other hand, Patent Document 2 describes a method for coating a self-soluble alloy, which forms a coating layer by irradiating a laser beam from a semiconductor laser device while supplying self-soluble alloy particles to the surface of a copper plate to melt and solidify the self-soluble alloy. It has been proposed, and unlike a general thermal spray coating that requires heat treatment after thermal spraying, the problem of thermal deformation can be improved. Further, as compared with the thermal spray coating of Patent Document 1 and the like, stronger adhesion to the substrate can be ensured.

Japanese Patent No. 6109106 Japanese Unexamined Patent Publication No. 2005-254317

However, in Patent Document 2, it cannot be said that the material components of the coating layer, the structure of the coating layer, the manufacturing conditions of the coating layer, and the like are sufficiently studied, and these improvements are necessary.
The present invention has been made in view of such circumstances, and is a continuous casting mold having excellent heat resistance, corrosion resistance, and abrasion resistance, having a coating film having few foreign substances, being dense, and having excellent adhesion to a substrate. It is an object of the present invention to provide a method for manufacturing a casting mold.

The continuous casting mold according to the first invention according to the above object has a self-soluble alloy coating layer formed by laser cladding on the molten steel contact surface of the base material of the continuous casting mold.
Here, Ni, Co, and Fe are preferably used as the main component metal of the self-soluble alloy, but the metal is not limited thereto. Further, these metals may be used in combination of two or more types (the same applies to the second invention).

In the continuous casting mold according to the first invention, the self-soluble alloy preferably contains aluminum.

In the continuous casting mold according to the first invention, the self-soluble alloy contains (1) Ni as a main component metal, Cr: 0 to 26% by mass, B: 1 to 4.5% by mass, Si: 0. 5 to 5% by mass, C: 0.4 to 3% by mass, Fe: 0 to 5% by mass, Co: 0 to 1% by mass, Al: 1 to 5% by mass, Mo: 0 to 20% by mass, Nb: A Ni-based self-soluble alloy containing 0 to 4% by mass, W: 0 to 5% by mass, Mn: 0 to 2% by mass, V: 0-1% by mass, (2) Co as a main component metal, Cr: 5 to 30% by mass, Si: 0.5 to 3% by mass, C: 0.05 to 3% by mass, Fe: 0 to 2% by mass, Mo: 0 to 30% by mass, W: 0 to 15% by mass. Containing Co-based self-soluble alloy and (3) Fe as main components, Cr: 0 to 30% by mass, Si: 0.3 to 1.3% by mass, C: 0 to 3% by mass, Ni: 0 It is more preferably any one of Fe-based self-soluble alloys containing ~ 16% by mass and Mo: 0 to 5% by mass.
Here, Cr, Fe, Co, Mo, Nb, W, Mn and V in the Ni-based self-soluble alloy, Fe, Mo and W in the Co-based self-soluble alloy, and Cr, C, Ni and Mo in the Fe-based self-soluble alloy. Is not an essential component, but an optional component whose content can be selected within the above range (including 0) (the same applies to the second invention).

In the continuous casting mold according to the first invention, the coating layer may be multi-layered, and the coefficient of linear expansion may decrease from the layer closest to the substrate to the layer farthest from the substrate.

In the continuous casting mold according to the first invention, the content of the main component metal of the self-soluble alloy decreases from the layer closest to the base material to the layer farthest from the layer of the multi-layered coating layer. Is preferable.

In the continuous casting mold according to the first invention, the self-soluble alloy may be mixed with carbide, boride, siliceous or nitride ceramics.

In the continuous casting mold according to the first invention, a base layer formed by plating or laser cladding may be provided between the base material and the coating layer.

In the method for manufacturing a mold for continuous casting according to the second invention according to the above object, a coating layer of a self-fluxing alloy is formed on the molten steel contact surface of the base material of the mold for continuous casting by laser cladding.

In the method for producing a mold for continuous casting according to the second invention, the self-soluble alloy preferably contains aluminum.

In the method for producing a mold for continuous casting according to the second invention, the self-soluble alloy contains (1) Ni as a main component metal, Cr: 0 to 26% by mass, B: 1 to 4.5% by mass, Si. : 0.5 to 5% by mass, C: 0.4 to 3% by mass, Fe: 0 to 5% by mass, Co: 0-1% by mass, Al: 1 to 5% by mass, Mo: 0 to 20% by mass. , Nb: 0 to 4% by mass, W: 0 to 5% by mass, Mn: 0 to 2% by mass, V: 0-1% by mass, Ni-based self-soluble alloy, (2) Co as a main component metal , Cr: 5 to 30% by mass, Si: 0.5 to 3% by mass, C: 0.05 to 3% by mass, Fe: 0 to 2% by mass, Mo: 0 to 30% by mass, W: 0 to 15 Co-based self-soluble alloy containing mass% and (3) Fe as the main component metal, Cr: 0 to 30% by mass, Si: 0.3 to 1.3% by mass, C: 0 to 3% by mass, It is more preferable that any one of the Fe-based self-soluble alloys containing Ni: 0 to 16% by mass and Mo: 0 to 5% by mass is used.

In the method for producing a mold for continuous casting according to the second invention, the coating layer may be multi-layered and the coefficient of linear expansion may be reduced from the layer closest to the substrate to the layer farthest from the substrate.

In the method for producing a mold for continuous casting according to the second invention, the content of the main component metal of the self-soluble alloy is reduced from the layer closest to the substrate to the layer farthest from the layer of the multilayer coating layer. It is preferable to let it.

In the method for producing a mold for continuous casting according to the second invention, a carbide, a boride, a siliceate or a nitride ceramic can be mixed with the self-soluble alloy.

In the method for producing a mold for continuous casting according to the second invention, a base layer may be formed between the base material and the coating layer by plating or laser cladding.

In the method for producing a mold for continuous casting according to the second invention, it is preferable to preheat the base material before starting irradiation of the base material with laser light.

In the method for producing a mold for continuous casting according to the second invention, it is more preferable to cool the base material while irradiating the base material with laser light.

In the method for manufacturing a mold for continuous casting according to the first invention and a mold for continuous casting according to the second invention, a coating layer of a self-fluxing alloy is formed on the molten steel contact surface of the base material by laser cladding. As a result, the heat resistance, corrosion resistance and wear resistance of the continuous casting mold are improved.

In the first and second inventions, when the self-soluble alloy contains aluminum, the aluminum having a strong oxidizing action improves the deoxidizing effect, reduces foreign substances (bubbles and oxides) contained in the coating layer, and at the same time. The abrasion resistance of the coating layer can be improved by precipitation hardening of _{Ni 3 Al.}

In the first and second inventions, the self-soluble alloy contains (1) Ni as a main component metal, Cr: 0 to 26% by mass, B: 1 to 4.5% by mass, Si: 0.5 to 5% by mass. %, C: 0.4 to 3% by mass, Fe: 0 to 5% by mass, Co: 0 to 1% by mass, Al: 1 to 5% by mass, Mo: 0 to 20% by mass, Nb: 0 to 4% by mass. %, W: 0 to 5% by mass, Mn: 0 to 2% by mass, V: 0 to 1% by mass, Ni-based self-soluble alloy, (2) Co as the main component metal, Cr: 5 to 30% by mass. %, Si: 0.5 to 3% by mass, C: 0.05 to 3% by mass, Fe: 0 to 2% by mass, Mo: 0 to 30% by mass, W: 0 to 15% by mass. Self-soluble alloy and (3) Fe as the main metal, Cr: 0 to 30% by mass, Si: 0.3 to 1.3% by mass, C: 0 to 3% by mass, Ni: 0 to 16% by mass. , Mo: When any one of the Fe-based self-soluble alloys containing 0 to 5% by mass, the coating layer can be densified to improve the adhesion to the substrate.

In the first and second inventions, when the coating layer is multi-layered and the linear expansion coefficient decreases from the layer closest to the substrate to the layer farthest from the substrate, cracking of the coating layer is effectively prevented. Can be done.

In the first and second inventions, when the content of the main component metal of the self-soluble alloy decreases from the layer closest to the base material of the multilayered coating layer toward the layer farthest from the base material, the linear expansion of each layer occurs. The coefficient can be easily adjusted.

In the first and second inventions, when the self-soluble alloy is mixed with carbide, boride, siliceous or nitride ceramics, it is possible to suppress a decrease in hardness of the coating layer and improve wear resistance.

In the first and second inventions, when the base layer is formed between the base material and the coating layer by plating or laser cladding, the absorption rate of laser light can be increased and the coating layer can be efficiently formed. At the same time, the adhesion of the coating layer can be improved.

In the second invention, when the base material is preheated before the start of irradiation of the base material with the laser beam, the heat of the laser light is suppressed from diffusing to the base material such as copper having a low thermal conductivity, and the self-soluble alloy is formed. It can be melted efficiently, and the rapid cooling of the coating layer can be prevented, and the occurrence of cracks can be prevented.

In the second invention, when the base material is cooled while the base material is irradiated with the laser beam, the base material is prevented from being heated to a temperature higher than the softening point by the laser light, and the strength of the base material is reduced and the base material is cracked. Occurrence can be effectively prevented.

It is a normal cross-sectional view which shows the mold for continuous casting manufactured by the manufacturing method of the mold for continuous casting which concerns on 1st Example of this invention. It is sectional drawing which shows the base material of the continuous casting mold which formed the coating layer by the manufacturing method of the continuous casting mold which concerns on 2nd Example of this invention. It is sectional drawing which shows the base material of the continuous casting mold which formed the coating layer by the manufacturing method of the continuous casting mold which concerns on 3rd Example of this invention.

Subsequently, an embodiment embodying the present invention will be described with reference to the attached drawings.
The method for manufacturing a continuous casting mold according to the first embodiment of the present invention shown in FIG. 1 improves the heat resistance, corrosion resistance, and abrasion resistance of the base material 10 of the continuous casting mold used for manufacturing steel and the like. It is something that makes you.
As shown in FIG. 1, a coating layer of a self-soluble alloy is applied to the molten steel contact surface of the base material 10 of a continuous casting mold made of copper or a copper alloy (for example, Cu—Cr—Zr, etc.) by laser cladding. 12 is formed.
In laser cladding, the laser processing head 13 irradiates the molten steel contact surface of the base material 10 with the laser beam 14, and the powder supply unit 15 applies the self-soluble alloy as the raw material of the coating layer 12 to the molten steel contact surface of the base material 10. Spray the powder 16. The powder 16 is heated by the laser beam 14 and melted, and welded to the molten steel contact surface of the base material 10 to form the coating layer 12. By moving the laser processing head 13, a strip-shaped coating layer 12 is continuously formed on the molten steel contact surface of the base material 10, and eventually the entire molten steel contact surface of the base material 10 is coated with a laser cladding of a self-fluxing alloy. It can be covered with layer 12.

Here, the structure of the laser processing head including the arrangement of the powder supply unit is not limited to this embodiment, as long as the powder can be sprayed to the irradiation position of the laser beam, and can be appropriately selected. For example, the powder supply unit may not be integrated with the laser processing head but may be separated.
The self-soluble alloy preferably contains aluminum, and more specifically, Ni is the main component metal, Cr: 0 to 26% by mass, B: 1 to 4.5% by mass, Si: 0.5 to 5% by mass, C: 0.4 to 3% by mass, Fe: 0 to 5% by mass, Co: 0 to 1% by mass, Al: 1 to 5% by mass, Mo: 0 to 20% by mass, Nb: 0 to A Ni-based self-soluble alloy containing 4% by mass, W: 0 to 5% by mass, Mn: 0 to 2% by mass, and V: 0 to 1% by mass is preferably used. Since the self-soluble alloy contains aluminum, the deoxidizing effect can be improved by the strong oxidizing action of aluminum, and foreign substances (bubbles and oxides) contained in the coating layer 12 can be reduced. Further, when the self-soluble alloy contains Ni as the main component metal, the wear resistance of the coating layer 12 can be improved by precipitation hardening of _{Ni 3 Al.} Furthermore, by containing B (boron) and Si (silicon), the melting point of the main component metal such as Ni is lowered, and at the same time, it is combined with the air (oxygen) adhering to Ni in the molten state to form borosilicate glass. It can be formed and floated, exert a deoxidizing action to densify the coating layer 12, and improve the adhesion to the base material 10.

As the self-soluble alloy, in addition to the Ni-based self-soluble alloy containing Ni as the main component metal, a Co-based self-soluble alloy containing Co as the main component metal and an Fe-based self-soluble alloy containing Fe as the main component metal are used. More specifically, Co is the main component metal, Cr: 5 to 30% by mass, Si: 0.5 to 3% by mass, C: 0.05 to 3% by mass, Fe: 0 to 2 Co-based self-soluble alloy containing mass%, Mo: 0 to 30% by mass, W: 0 to 15% by mass, and Fe as main components, Cr: 0 to 30% by mass, Si: 0.3 to 1 A Fe-based self-soluble alloy containing 3% by mass, C: 0 to 3% by mass, Ni: 0 to 16% by mass, and Mo: 0 to 5% by mass is preferably used.
In addition to the above, the components of the self-soluble alloy can be appropriately selected. For example, carbide ceramics (WC, NbC, etc.), boride ceramics, siliceous ceramics, or nitride ceramics may be selected as the self-soluble alloy. It can be mixed to suppress the decrease in hardness and improve wear resistance, and MC alloy (Ni-Cr-Fe, Cr 45%) in which Cr is solid-dissolved in Ni is used to resist glassy acidity and corrosion resistance. It can also improve sex. The wavelength and energy density of the laser beam can be appropriately selected according to the components of the self-soluble alloy and the components of the base material.

Here, the base material 10 made of copper or a copper alloy has a very high thermal conductivity, and the heat input during irradiation with the laser beam 14 diffuses at high speed to facilitate cooling, so that the coating layer on the base material 10 is easy to cool. Welding of 12 is inhibited. Therefore, the base material 10 is preheated before the start of irradiation of the base material 10 with the laser beam 14, the heat of the laser light 14 is suppressed from being diffused to the base material 10, the self-soluble alloy is efficiently melted, and the coating is applied. Prevents rapid cooling of the layer 12 and prevents the occurrence of cracks.
Further, when the base material 10 is irradiated with the laser beam 14 to heat the base material 10 above the softening point and the strength of the base material 10 decreases, the base material 10 may be cracked. Therefore, the base material 10 is cooled while the base material 10 is irradiated with the laser beam 14 to prevent the base material 10 from being heated above the softening point by the laser light 14, and the strength of the base material 10 is lowered and cracks are generated. To prevent.
Therefore, while the base material 10 is irradiated with the laser beam 14 to form the coating layer 12, it is necessary to maintain the base material 10 in a predetermined temperature range while balancing the cooling and heating of the base material 10. be. The types and combinations of the heating means (not shown) for preheating the base material 10 and the cooling means (not shown) for cooling the base material 10 can be appropriately selected.

Next, a method for manufacturing a mold for continuous casting according to the second embodiment will be described. The same components as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted.
As shown in FIG. 2, the method for manufacturing the continuous casting mold according to the second embodiment is different from that of the first embodiment in that the coating layer 19 is multi-layered on the base material 10 of the continuous casting mold (here). Then, it is a point formed by forming 5 layers). Then, by reducing the linear expansion coefficient from the layer 20a closest to the base material 10 toward the layer 20e farthest from the base material 10, cracking of the coating layer 19 can be effectively prevented. At this time, by reducing the content of the main component metal (for example, Ni) of the self-soluble alloy from the layer 20a closest to the base material 10 of the multi-layered coating layer 19 toward the layer 20e farthest from the layer 20a, each layer 20a to The coefficient of linear expansion of 20e can be easily adjusted, but the method for adjusting the coefficient of linear expansion can be appropriately selected. The other manufacturing methods are the same as those in the first embodiment.

Next, a method for manufacturing a mold for continuous casting according to the third embodiment will be described. The same components as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted.
As shown in FIG. 3, the method for manufacturing the continuous casting mold according to the third embodiment differs from the first and second embodiments between the base material 10 and the coating layer 22 of the continuous casting mold. In the meantime, the base layer 23 is formed by plating or laser cladding.
Here, the coating layer 22 may be formed of the same material as the coating layer 12, or may be multi-layered like the coating layer 19, and other manufacturing methods are the same as in the first embodiment. Further, when the base layer 23 is formed by plating, it is carried out in a plating bath at about 50 ° C., and Ni or the like is preferably used as the material. When the base layer 23 is formed by laser cladding, the manufacturing method is the same as that of the first embodiment, and Ni, Ni—Al, Ni—Cu or the like is preferably used as the material.
By forming the base layer 23 with a material having a high laser light absorption rate in this way, the laser light absorption rate when forming the coating layer 22 can be increased, the coating layer 22 can be efficiently formed, and the coating layer 22 can be formed. The adhesion of 22 can be improved.

Although the embodiment of the present invention has been described above, the present invention is not limited to the configuration described in the above-described embodiment, and other implementations that can be considered within the scope of the claims. It also includes examples and variations.

By the method for manufacturing a mold for continuous casting and a mold for continuous casting according to the present invention, the heat resistance, corrosion resistance and abrasion resistance of the mold for continuous casting can be improved as compared with the conventional case, and the life can be extended. It is possible to reduce the labor and cost required for maintenance of the continuous casting mold in the manufacturer and promote the spread of new continuous casting molds.

10: Substrate, 12: Coating layer, 13: Laser processing head, 14: Laser light, 15: Powder supply section, 16: Powder, 19: Coating layer, 20a to 20e: Layer, 22: Coating layer, 23: Bottom Formation

Claims

A mold for continuous casting, which comprises a coating layer of a self-fluxing alloy formed by laser cladding on the molten steel contact surface of the base material of the mold for continuous casting.
The mold for continuous casting according to claim 1, wherein the self-soluble alloy contains aluminum.
In the continuous casting mold according to claim 1, the self-soluble alloy contains (1) Ni as a main component metal, Cr: 0 to 26% by mass, B: 1 to 4.5% by mass, Si: 0.5. ~ 5% by mass, C: 0.4 to 3% by mass, Fe: 0 to 5% by mass, Co: 0 to 1% by mass, Al: 1 to 5% by mass, Mo: 0 to 20% by mass, Nb: 0 Ni-based self-soluble alloy containing ~ 4% by mass, W: 0 to 5% by mass, Mn: 0 to 2% by mass, V: 0-1% by mass, (2) Co as the main component metal, Cr: 5 Contains ~ 30% by mass, Si: 0.5 to 3% by mass, C: 0.05 to 3% by mass, Fe: 0 to 2% by mass, Mo: 0 to 30% by mass, W: 0 to 15% by mass. Co-based self-soluble alloy and (3) Fe as the main metal, Cr: 0 to 30% by mass, Si: 0.3 to 1.3% by mass, C: 0 to 3% by mass, Ni: 0 to A mold for continuous casting, which is any one of Fe-based self-soluble alloys containing 16% by mass and Mo: 0 to 5% by mass.
In the continuous casting mold according to any one of claims 1 to 3, the coating layer is multi-layered, and the linear expansion coefficient decreases from the layer closest to the substrate to the layer farthest from the substrate. Mold for continuous casting.
In the continuous casting mold according to claim 4, the content of the main component metal of the self-soluble alloy decreases from the layer closest to the base material to the layer farthest from the layer of the multi-layered coating layer. A mold for continuous casting characterized by.
The continuous casting mold according to any one of claims 1 to 5, wherein the self-soluble alloy is mixed with carbide, boride, siliceous or nitride ceramics.
The method for producing a mold for continuous casting according to any one of claims 1 to 6 is characterized in that a base layer formed by plating or laser cladding is provided between the base material and the coating layer. Mold for continuous casting.
A method for manufacturing a mold for continuous casting, which comprises forming a coating layer of a self-fluxing alloy on a molten steel contact surface of a base material of a mold for continuous casting by laser cladding.
The method for manufacturing a mold for continuous casting according to claim 8, wherein the self-soluble alloy contains aluminum.
In the method for producing a mold for continuous casting according to claim 8, the self-soluble alloy contains (1) Ni as a main component metal, Cr: 0 to 26% by mass, B: 1 to 4.5% by mass, Si: 0.5 to 5% by mass, C: 0.4 to 3% by mass, Fe: 0 to 5% by mass, Co: 0-1% by mass, Al: 1 to 5% by mass, Mo: 0 to 20% by mass, A Ni-based self-soluble alloy containing Nb: 0 to 4% by mass, W: 0 to 5% by mass, Mn: 0 to 2% by mass, V: 0-1% by mass, (2) Co as a main component metal. Cr: 5 to 30% by mass, Si: 0.5 to 3% by mass, C: 0.05 to 3% by mass, Fe: 0 to 2% by mass, Mo: 0 to 30% by mass, W: 0 to 15% by mass. A Co-based self-soluble alloy containing% and (3) Fe as the main metal, Cr: 0 to 30% by mass, Si: 0.3 to 1.3% by mass, C: 0 to 3% by mass, Ni. A method for producing a mold for continuous casting, which is any one of Fe-based self-soluble alloys containing 0 to 16% by mass and Mo: 0 to 5% by mass.
In the method for producing a mold for continuous casting according to any one of claims 8 to 10, the coating layer is multi-layered and the linear expansion coefficient is reduced from the layer closest to the substrate to the layer farthest from the substrate. A method for manufacturing a mold for continuous casting, which is a feature.
In the method for manufacturing a mold for continuous casting according to claim 11, the content of the main component metal of the self-soluble alloy is reduced from the layer closest to the base material to the layer farthest from the layer of the multi-layered coating layer. A method for manufacturing a mold for continuous casting, which is characterized by the fact that.
The method for manufacturing a mold for continuous casting according to any one of claims 8 to 12, wherein the self-soluble alloy is mixed with ceramics of carbide, boride, siliceate or nitride. Production method.
The method for producing a mold for continuous casting according to any one of claims 8 to 13, wherein a base layer is formed between the base material and the coating layer by plating or laser cladding. Mold manufacturing method.
The method for manufacturing a continuous casting mold according to any one of claims 8 to 14, wherein the base material is preheated before the start of irradiation of the base material with a laser beam. ..
The method for manufacturing a mold for continuous casting according to any one of claims 8 to 15, wherein the base material is cooled while the base material is irradiated with laser light.