JP2021062411A5

JP2021062411A5 -

Info

Publication number: JP2021062411A5
Application number: JP2021012927A
Authority: JP
Filing date: 2021-01-29
Publication date: 2021-06-10
Anticipated expiration: 2035-12-03

Claims

a. It has a pair of casting rolls that rotate in opposite directions so that the casting strip can be fed downward from the roll gap with a roll gap in between, and the casting surface of each casting roll is 80 mm or less in thickness and is made of copper and a copper alloy. Assemble a casting machine, made of a material selected from the group and formed by a cylindrical tube with multiple longitudinal water channels extending inside.
b. At least two expansion rings are placed adjacent to each other in a cylindrical tube within 450 mm inward from the edge of the casting strip formed at the opposite end of the casting roll during the casting operation, with each expansion ring having at least one heating. Casting with elements and insulation coating, configured to change the roll crown and casting strip thickness profile of the casting roll casting surface during casting by causing expansion of the cylindrical tube by increasing radial dimensions, casting with insulation coating It is configured to minimize heat transfer from the expansion ring inside to the casting roll and to regulate the expansion of the expansion ring and thus the cylindrical tube by providing a water channel in each expansion ring through which water can flow.
c. Assemble a metal supply system capable of forming a casting reservoir supported on the casting roll casting surface above the roll gap by a side weir that defines the casting reservoir adjacent to the edge of the roll gap.
d. A roll crown configured by controlling the roll crown of a cast roll casting surface during a casting operation by controlling the radial dimensions of the expansion ring in response to at least one of the digital or analog signals received from at least one sensor. Controlled thin strip continuous casting method.

e. At least one of the following characteristics can be detected
Expansion ring temperature,
Downstream Cast Strip Thickness Profile,
Local thickness of the casting strip at a specified point near the edge of the casting strip,
Radial casting roll expansion at a defined point near the casting roll surface crown during casting and the casting strip edge,
The roll crown controlled thin strip continuous casting method of claim 1, further comprising arranging at least one sensor capable of emitting a digital or analog signal indicating at least one of the above characteristics of the cast strip.

f. It is further configured by placing at least one expansion ring in the cylindrical tube corresponding to the central part of the casting strip formed on the casting roll during casting, each expansion ring having at least one heating element and insulation coating. And the casting roll is configured to change the crown and casting strip thickness profile of the casting roll casting surface during casting by causing the expansion of the cylindrical tube by increasing the radial dimension, and the casting roll from the expansion ring during casting with an insulating coating. The roll according to claim 1 or 2, wherein a water channel through which water can flow is provided in each expansion ring to minimize heat transfer to the expansion ring, thereby adjusting the expansion of the expansion ring and thus the cylindrical tube. Thin strip continuous casting method with crown control.

The roll crown controlled thin strip continuous casting method according to any one of claims 1 to 3, wherein the heating element of the expansion ring is made of stainless steel, nickel or nickel alloy.

g. While controlling the casting roll drive to change the rotational speed of the casting roll, the radial dimension of the insulatingly coated expansion ring depends on at least one of the digital or analog signals received from the at least one sensor. The thin strip continuous casting method by roll crown control according to claim 2, further comprising controlling the roll crown on the casting roll casting surface during the casting operation by modifying it.

h. While changing the rotational speed of the casting rolls by controlling the casting roll drive device, the radius direction of the expansion ring corresponding to the radial dimension, and cast strip central portion is subjected to thermal barrier coating of expanded ring have been subjected to thermal barrier coating The roll according to claim 3, further comprising controlling the roll crown of the casting surface during the casting operation by varying the dimensions according to at least one of the digital or analog signals received from at least one sensor. Thin strip continuous casting method with crown control.

The method for continuous thin strip casting by roll crown control according to any one of claims 1 to 6, wherein the expansion ring is provided with a heat insulating coating and has an annular dimension of 50 to 150 mm.

The roll crown controlled thin strip continuous casting method according to any one of claims 1 to 6, wherein the expansion ring is provided with a heat insulating coating and has a width of up to 200 mm.

The thinness by roll crown control according to any one of claims 1 to 8, wherein the roll crown of the cast roll cast surface can be controlled by applying a heat insulating coating and independently controlling the radial dimension of each expansion ring. Strip continuous casting method.

i. Further configured by changing the radial dimensions of the expansion ring while changing the horizontal distance between the axial centerlines of the casting roll by controlling the position of the casting roll, each expansion ring with a heat insulating coating is described above. Controlling the roll crown of the casting roll casting surface during the casting operation corresponding to at least one characteristic at the center or edge of the casting strip in response to at least one of the digital or analog signals received from at least one sensor. The thin strip continuous casting method according to claim 3, wherein the roll crown is controlled.

The method for continuous thin strip casting by roll crown control according to any one of claims 1 to 10, wherein the casting surface of each casting roll is coated with a metal or a metal alloy.

a. It has a pair of casting rolls that rotate in opposite directions so that the casting strip can be fed downward from the roll gap with a roll gap in between, and the casting surface of each casting roll is 80 mm or less in thickness and is made of copper and a copper alloy. Assemble a casting machine, made of a material selected from the group and formed by a cylindrical tube with multiple longitudinal water channels extending inside.
b. At least one expansion ring is placed in the cylindrical tube corresponding to the center of the casting strip formed in contact with the casting roll during the casting operation, and each expansion ring has at least one heating element and insulation coating. The heat insulation from the expansion ring during casting to the casting roll is configured to change the crown and casting strip thickness profile of the casting surface during casting by causing expansion of the cylindrical tube by increasing the radial dimension. It is configured so that the expansion of the expansion ring and thus the cylindrical tube can be adjusted by providing a channel in each expansion ring that minimizes transmission and allows water to flow.
c. Assemble a metal supply system capable of forming a casting reservoir supported on the casting roll casting surface above the roll gap by a side weir that defines the casting reservoir adjacent to the edge of the roll gap.
d. Casting roll during casting operation Roll crown on the casting surface by controlling the radial dimension of at least one expansion ring with the insulation coating in response to at least one of the digital or analog signals received from at least one sensor. A thin strip continuous casting method with roll crown control consisting of controlling.

e. At least one of the following characteristics can be detected
The temperature of the at least one expansion ring,
Downstream casting strip thickness profile,
Local thickness of the casting strip at the specified point near the edge of the casting strip,
Casting roll surface crown during casting work,
Radial casting roll expansion at a defined point near the edge of the casting strip,
The roll crown controlled thin strip continuous casting according to claim 12 , further comprising arranging at least one sensor capable of emitting a digital or analog signal indicating at least one of the above-mentioned characteristics of the cast strip. Method.

The roll crown controlled thin strip continuous casting method according to claim 12 or 13, wherein at least one heating element is made of stainless steel, nickel or nickel alloy.

f. Controlling the casting roll drive to change the rotational speed of the casting roll while changing the radial dimensions of the insulation-coated at least one expansion ring to obtain a digital or analog signal from the at least one sensor. The method for continuous thin strip casting by roll crown control according to any one of claims 12 to 14 , further comprising controlling the roll crown of the casting roll casting surface during the casting operation according to at least one.

The roll crown controlled thin strip continuous casting method according to any one of claims 12 to 15 , wherein at least one expansion ring with a heat insulating coating has an annular dimension of 50 to 150 mm.

The roll crown controlled thin strip continuous casting method according to any one of claims 12 to 15 , wherein at least one expansion ring with a heat insulating coating has a width of up to 200 mm.

The roll crown according to any one of claims 12 to 17 , wherein the roll crown on the cast surface of the cast roll can be controlled by independently controlling each expansion ring corresponding to the central portion of the cast strip, which is provided with a heat insulating coating. Controlled thin strip continuous casting method.

g. Each of which is further configured and heat-insulated by changing the radial dimension of the at least one expansion ring while changing the horizontal distance between the casting roll axial centerlines by controlling the position of the casting roll. The expansion ring controls the roll crown of the casting roll casting surface during the casting operation in response to at least one characteristic in the center of the casting strip in response to at least one of the digital or analog signals received from the at least one sensor. The method for continuous thin strip casting by roll crown control according to any one of claims 12 to 18.

The method for continuous thin strip casting by roll crown control according to any one of claims 12 to 19, wherein the casting surface of each casting roll is coated with a metal or a metal alloy.

a. A pair of casting rolls that rotate in opposite directions so that the casting strip can be fed downward from the roll gap with a roll gap in between, and the casting surface of each casting roll is 80 mm or less in thickness from copper and copper alloy. A pair of casting rolls made of a material selected from the group consisting of cylindrical tubes with multiple longitudinal water channels extending inside.
b. It has at least one heating element and an insulating coating and is configured to change the roll crown and casting strip thickness profile of the casting roll casting surface during casting by causing expansion of the cylindrical tube by increasing the radial dimension. A cylindrical structure that minimizes heat transfer from the expansion ring during casting to the casting roll by a heat insulating coating and regulates the expansion of the expansion ring and thus the cylindrical tube by providing an internal channel through which water can flow. With at least two expansion rings located adjacent to the shaped tube and spaced inward within 450 mm from the edge of the casting strip formed at the opposite end of the casting roll during the casting operation.
c. Roll crown control consisting of a metal supply system located above the roll gap and capable of forming a casting reservoir supported on the casting roll casting surface by a side weir that defines the casting reservoir adjacent to the end of the roll gap. Thin strip continuous casting equipment.

d. At least one of the following characteristics can be detected
Expansion ring temperature,
Cast strip thickness profile placed downstream of the roll gap,
Local thickness of the casting strip at a specified point near the edge of the casting strip,
Casting roll surface crown during casting operation It is further composed of at least one sensor capable of emitting a digital or analog signal indicating radial casting roll expansion and at least one of the above characteristics at a defined point close to the casting strip edge. The thin strip by roll crown control according to claim 21 , wherein the roll crown of the casting roll casting surface during the casting operation is controlled by controlling the radial dimension of the expansion ring in response to a signal received from the at least one sensor. Continuous casting equipment.

e. It is further composed of at least one expansion ring in a cylindrical tube corresponding to the center of the casting strip formed on the casting roll during the casting operation, each expansion ring having at least one heating element and an insulating coating in the radial direction. The increased size is configured to change the crown and casting strip thickness profile of the roll casting surface during casting by causing the expansion of the cylindrical tube, and the insulation coating transfers heat from the expansion ring during casting to the casting roll. The roll crown control according to claim 21 or 22 , which is configured to adjust the expansion of the expansion ring and thus the cylindrical tube by providing a minimum water passage in each expansion ring through which water can flow. Strip continuous casting equipment.

f. While changing the rotational speed of the casting rolls by controlling the casting roll drive device, by changing in response to an electrical signal received the radial dimension of the front Symbol expansion ring has been subjected to the thermal barrier coating from said at least one sensor The thin strip continuous casting apparatus according to claim 22 , further comprising a control system capable of controlling the roll crown on the casting surface of the casting roll during the casting operation.

The roll crown controlled thin strip continuous casting apparatus according to any one of claims 21 to 24 , wherein the expansion ring is provided with a heat insulating coating and each expansion ring has an annular dimension of 50 to 150 mm.

The roll crown controlled thin strip continuous casting apparatus according to any one of claims 21 to 24, which is provided with a heat insulating coating and each expansion ring has a width of up to 200 mm.

The thinness by roll crown control according to any one of claims 21 to 26 , wherein the roll crown of the cast surface of the cast roll can be controlled by independently controlling the radial dimension of each expansion ring provided with the heat insulating coating. Strip continuous casting equipment.

The roll crown controlled thin strip continuous casting apparatus according to any one of claims 21 to 27 , wherein the heating element is made of stainless steel, nickel or nickel alloy.

The roll crown controlled thin strip continuous casting apparatus according to any one of claims 21 to 28, wherein the casting surface of each casting roll is coated with a metal or a metal alloy.

a. A pair of casting rolls that rotate in opposite directions so that the casting strip can be fed downward from the roll gap with a roll gap in between. The casting surface of each casting roll is 80 mm or less in thickness and is made of copper and a copper alloy. A pair of casting rolls made of a material selected from the group and formed by a cylindrical tube with multiple longitudinal water channels extending inside.
b. With at least one heating element and insulation coating, the insulation coating is configured to change the crown and casting strip thickness profile of the casting surface during casting by causing expansion of the cylindrical tube with increased radial dimensions. Within a cylindrical tube configured to minimize heat transfer from the expansion ring during casting to the casting roll and to regulate the expansion of the expansion ring and thus the cylindrical tube by providing an internal channel through which water can flow. , At least one expansion ring provided at a position corresponding to the center of the casting strip formed in contact with the casting roll during the casting operation.
c. A metal supply system capable of forming a casting reservoir supported on the casting roll casting surface by a side weir located above the roll gap and defining the casting reservoir adjacent to the edge of the roll gap.
Thin strip continuous casting equipment with roll crown control consisting of.

d. At least one of the following characteristics can be detected
The temperature of at least one expansion ring;
Cast strip thickness profile located downstream of the roll gap,
Local thickness of the casting strip at a specified point near the center of the casting strip,
Casting roll surface crown during casting work,
Radial casting roll expansion at a defined point near the center of the casting strip,
It is further composed of at least one sensor capable of emitting a digital or analog signal exhibiting at least one of the above characteristics, and the radial dimension of the at least one expansion ring according to the signal received from the at least one sensor. The thin strip continuous casting apparatus according to claim 30 , wherein the roll crown of the casting roll casting surface during the casting operation is controlled by controlling the roll crown control.

e. During the casting operation, the rotational speed of the casting roll is changed by controlling the casting roll drive device, and the radial dimension of the at least one expansion ring is changed according to the electric signal received from the at least one sensor. Casting The thin strip continuous casting apparatus according to claim 31 , further comprising a control system capable of changing the roll crown of the roll casting surface.

The roll crown controlled thin strip continuous casting apparatus according to any one of claims 30 to 32 , wherein the insulation coating is applied and at least one expansion ring corresponding to the central portion of the casting strip has an annular dimension of 50 to 150 mm. ..

The roll crown controlled thin strip continuous casting apparatus according to any one of claims 30 to 32 , wherein the insulation coating is applied and at least one expansion ring corresponding to the central portion of the casting strip has a width of up to 200 mm.

The roll crown control according to any one of claims 30 to 34 , wherein each expansion ring that is heat-insulated and corresponds to the central portion of the casting strip is independently controlled to control the roll crown of the cast roll casting surface. Thin strip continuous casting equipment by.

The roll crown controlled thin strip continuous casting apparatus according to any one of claims 30 to 35 , wherein the at least one heating element is made of stainless steel, nickel or a nickel alloy.

The roll crown controlled thin strip continuous casting apparatus according to any one of claims 30 to 36, wherein the casting surface of each casting roll is coated with a metal or a metal alloy.

a. It has a pair of casting rolls that rotate in opposite directions so that the casting strip can be fed downward from the roll gap with a roll gap in between, and the casting surface of each casting roll is 80 mm or less in thickness and is made of copper and a copper alloy. Assemble a casting machine, made of a material selected from the group and formed by a cylindrical tube with multiple longitudinal water channels extending inside.
b. At least two expansion rings, each with at least one heating element and an insulating coating, are adjacent in a cylindrical tube within 450 mm inward from the edge of the casting strip formed at the reciprocal end of the casting roll during the casting operation. The adiabatic coating is provided under similar operating conditions with a similar uncoated expansion ring to the cylindrical tube when the cylindrical tube is cooled in the longitudinal water flow path and the heating element is activated. It has a thickness that can achieve a temperature difference that is at least 50% larger than the original temperature difference.
c. Assemble a metal supply system capable of forming a casting reservoir supported on the casting roll casting surface above the roll gap by a side weir that defines the casting reservoir adjacent to the edge of the roll gap.
d. The roll crown of the casting roll casting surface during the casting operation is controlled by controlling the radial dimensions of the expansion ring in response to at least one of the digital or analog signals received from at least one sensor.
e. A roll crown controlled thin strip continuous casting method comprising providing a channel through which water can pass through each expansion ring and controlling the flow of water to adjust the expansion of the expansion ring.

The method for continuous thin strip casting by roll crown control according to claim 38, wherein the casting surface of each casting roll is coated with a metal or a metal alloy.

The adiabatic coating is such that when the cylindrical tube is cooled in the longitudinal water flow path and the heating element is activated, the expansion ring with respect to the cylindrical tube is under similar operating conditions with a similar uncoated expansion ring. The roll crown controlled thin strip continuous casting method according to claim 38 or 39, which has a thickness such that a temperature difference of at least 67% larger than the temperature difference can be achieved.

a. A pair of casting rolls that rotate in opposite directions so that the casting strip can be fed downward from the roll gap with a roll gap in between, and the casting surface of each casting roll is 80 mm or less in thickness from copper and copper alloy. A pair of casting rolls made of a material selected from the group consisting of cylindrical tubes with multiple longitudinal water channels extending inside.
b. It has at least one heating element and an insulating coating, the same as the expansion ring is not coated on the cylindrical tube when the cylindrical tube is cooled in the longitudinal water flow path and the heating element is activated. It has a thickness that can achieve a temperature difference of at least 50% greater than the temperature difference under similar operating conditions due to the expansion ring, and has a water channel inside that allows water to flow and regulates the expansion of the expansion ring. At least two expansion rings arranged adjacent to each other in a cylindrical tube configured to be provided and spaced inward within 450 mm from the edge of the casting strip formed at the opposite end of the casting roll during the casting operation.
c. Roll crown control consisting of a metal supply system located above the roll gap and capable of forming a casting reservoir supported on the casting roll casting surface by a side weir that defines the casting reservoir adjacent to the end of the roll gap. Thin strip continuous casting equipment.

The roll crown controlled thin strip continuous casting apparatus according to claim 41, wherein the casting surface of each casting roll is coated with a metal or a metal alloy.

The adiabatic coating is such that when the cylindrical tube is cooled in the longitudinal water flow path and the heating element is activated, the expansion ring with respect to the cylindrical tube is under similar operating conditions with a similar uncoated expansion ring. The roll crown controlled thin strip continuous casting apparatus according to claim 41 or 42, which has a thickness capable of achieving a temperature difference of at least 67% larger than the temperature difference.