CN111389908A - Method for improving yield of single-stand reversing mill - Google Patents
Method for improving yield of single-stand reversing mill Download PDFInfo
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- CN111389908A CN111389908A CN202010228843.2A CN202010228843A CN111389908A CN 111389908 A CN111389908 A CN 111389908A CN 202010228843 A CN202010228843 A CN 202010228843A CN 111389908 A CN111389908 A CN 111389908A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
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- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
- B21B1/30—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a non-continuous process
- B21B1/32—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a non-continuous process in reversing single stand mills, e.g. with intermediate storage reels for accumulating work
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Abstract
A method for improving the yield of a single-stand reversible rolling mill stops coiling when a welding seam at the head of a base metal reaches the position N cm outside a roll seam outlet of the rolling mill; starting the rolling mill to work, and controlling the four-roller wiper to be opened until the welding seam at the head of the base metal passes through the four-roller wiper and the copper-roller wiper at a constant speed at the minimum rolling speed, and controlling the four-roller wiper to be closed; then the rolling mill accelerates to the normal rolling speed to roll the base metal; when the welding line at the tail part of the base material is positioned right above the plate-shaped roller, an operator presses an operation button, the four-roller wiper is started, the welding line at the tail part of the base material passes through the four-roller wiper and the copper roller wiper at a constant speed at a minimum rolling speed, the control system automatically controls the rolling machine to decelerate, and the welding line at the tail part of the base material stops at a position which is far away from the roller gap M when the rolling machine stops; finally, the rolling is carried out in the opposite direction, and the reciprocating rolling of the base metal is continuously carried out. The method can effectively ensure the quality of the rolled base metal and also improve the yield to the maximum extent.
Description
Technical Field
The invention relates to the field of rolling, in particular to a method for improving the yield of a single-stand reversing mill.
Background
In production, a single-stand reversing mill is often adopted to roll strip steel and other raw materials, the rolling yield is a main index for measuring the economy and the advancement, and the length of an unrolled part in the first-pass rolling process directly determines the rolling yield of the whole roll of strip steel. At present, a single-stand reversible rolling mill used at home and abroad is head-reciprocating rolling, and rolling must be carried out under the condition of front and rear tension, so that strip steel (head and tail parts) with a certain length cannot be rolled all the time; the existing techniques are divided into two cases: firstly, leading belts are not welded at the head and the tail of the strip steel, the strip steel is directly rolled, but the non-rolled length of the strip steel is longer in the method, so that the yield is influenced; secondly, in order to solve the problems in the first method, leading belts are welded at the head and the tail of the strip steel, the leading belts are generally cheap materials, the leading belts are used for holding winding drums on two sides to enable the raw materials to be in a rolling state as far as possible, so that the yield of the raw material rolling is improved, and the raw materials are rolled completely as far as possible.
For example, chinese patent No. Z L200880112355.2 (No. CN10835546B) discloses a rolling method, which discloses a rolling method commonly used in the prior art.
However, in the second method, when the raw material with the leading strips welded on the head and the tail is rolled, because the thickness of the welding seam between the leading strip and the raw material is larger than that of the base material and the surface is uneven, when the welding seam between the leading strip and the base material passes through a four-roller wiper and a copper-roller wiper, impact injury or scratch is easily generated on the surface of the wiper, and the defects can generate surface quality defects on the production of the base material in subsequent passes; the welding seam of the leader needs to be positioned outside the four-roll wiper in order to ensure the product quality, but this results in that the base material between the two four-roll wipers is not rolled, thereby affecting the yield. In addition, at present, the control of the single-stand reversible rolling mill control system at home and abroad on the first-pass unrolled part mainly depends on manual control of an operator on the rolling mill, and the operator is used for preventing accidents caused by rolling in the leading strip part, so that the reserved length of the unrolled part is usually longer in actual operation for the sake of safety, and the rolling yield is reduced by the operation. Further improvements are therefore desirable.
Disclosure of Invention
The invention aims to solve the technical problem of the prior art and provides a method for improving the yield of a single-stand reversible rolling mill, which can protect a wiper so as to ensure the product quality and reduce the non-rolling length of a base material as far as possible by automatically controlling the rolling mill to stop accurately.
The technical scheme adopted by the invention for solving the technical problems is as follows: a method for improving the yield of a single-stand reversing mill is characterized in that: the following two cases are included:
the method for improving the yield of the single-stand reversible rolling mill in the process of rolling the base metal with leading strips welded at the head and the tail comprises the following steps:
step 1, respectively arranging a coiling machine and an uncoiling machine on two sides of a single-stand reversible rolling mill, wherein a winding drum of the uncoiling machine coils base materials with heads and tails welded with leading strips, a welding seam at the head of the base materials is formed between the leading strips at the head of the base materials and the base materials, a welding seam at the tail of the base materials is formed between the leading strips at the tail of the base materials and the base materials, the leading strips at the head of the base materials on the uncoiling machine are coiled by using the coiling machine, and when the welding seam at the head of the base materials reaches an Ncm position outside a roll seam outlet of the rolling mill, the coiling work is stopped;
step 2, starting the single-stand reversible rolling mill to work so that the rolling mill can work at the minimum rolling speed V0m/min constant-speed operation, and simultaneously controlling the four-roller wiper to be opened until the welding line at the head of the base metal is sequentially at the minimum rolling speed V0Controlling the four-roller wiper to close after the m/min passes through the copper roller wiper and the four-roller wiper at a constant speed; then, accelerating the rolling mill to a normal rolling speed to perform primary rolling on the base metal;
step 3, utilizing the base material length calculation function of the reversible rolling mill, when Km is calculated to be the base material at the tail part of the base material distance at a certain moment, automatically decelerating the rolling mill to V1m/min, wherein the speed is used for ensuring that a subsequent operator can observe the welding line at the tail part of the base material, and then, the rolling mill always keeps running at the speed;
step 4, when the welding seam at the tail part of the base metal is positioned right above the plate-shaped roller, an operator immediately presses an operation button, a control system automatically controls the four-roller wiper to be opened, and the welding seam at the tail part of the base metal is decelerated to the minimum rolling speed V by the single-stand reversing mill before entering the four-roller wiper0m/min；
step 6, taking the uncoiler after the step 5 as a coiler, taking the coiler as the uncoiler, coiling the uncoiler by adopting the same method in the step 1, and performing second-pass rolling on the base metal by adopting the same method in the steps 2 to 5, wherein the first-pass rolling and the second-pass rolling process finish the first reciprocating rolling of the base metal;
step 7, continuously carrying out reciprocating rolling on the base metal according to the same method in the steps 1-6, and finally enabling the pressing thickness of the base metal to reach the set thickness;
the method for improving the yield of the single-stand reversible rolling mill in the process of rolling the base metal without leading strips at the head and the tail comprises the following steps: and using a belt wrapper to perform auxiliary wrapping on the base material coiled outside the winding drum.
In the scheme, the value range of N in the step 1 is 10-20.
In order to protect the copper roller, the steps 2 and 5 also comprise establishing a copper roller pressure control model in a control system, so that the pressure of the copper roller wiper is adjusted in proportion to the rolling speed of the single-stand reversing mill.
Specifically, when the rolling speed of the single-stand reversing mill in the step 2 and the step 5 is between 20 and 60m/min, the pressure of the copper roller is correspondingly adjusted to between 20 and 60 bar/m; when the rolling speed of the single-stand reversing mill is more than 60m/min, the pressure of the copper roller is adjusted to the pressure during normal operation.
Preferably, the value range of M in the step 5 is: 20 to 30.
Compared with the prior art, the invention has the advantages that: the four-roller wiper is opened by controlling the rolling mill to run at the minimum rolling speed, so that the damage to the four-roller wiper caused by the welding seam passing through the four-roller wiper can be effectively avoided, and the production quality of a product is ensured; meanwhile, the welding seam at the head part of the base metal and the welding seam at the tail part of the base metal pass through the four-roller wiper and the copper roller wiper at the minimum rolling speed, so that the protection of the copper roller wiper is realized, the welding seam is finally stopped between the copper roller wiper and the roller gap of the rolling mill under automatic control, the length of the base metal which is not rolled can be effectively reduced, and the yield is also improved to the maximum extent under the condition of ensuring the product quality by the method.
Drawings
FIG. 1 is a schematic view of rolling a parent material using a single stand reversing mill in an embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
When a single-stand reversing mill is used to perform reciprocating rolling of a material using a strip as a base material, there are two cases:
the first method comprises the following steps: in the process of rolling the strip steel, the leading belts are welded at two ends of the raw materials, so that the raw materials are in a rollable state as much as possible, the raw materials are rolled as much as possible, the welding seams of the leading belts are not rolled, as shown in fig. 1, the single stand reversing mill used in the present embodiment is a single stand twenty high rolling mill 1, the rolling mill is an integral rolling mill, a roll system 1 in the housing is provided with 8 supporting rolls, 6 middle rolls, 4 middle rolls and 2 working rolls, all the rolls are arranged in the housing in a 4-3-2-1 distribution mode and are symmetrical up and down, a copper roller wiper 2, a four-roller wiper 3 and a plate-shaped roller 4 are symmetrically arranged on two sides of the housing in sequence, a roller system distribution diagram 1 is shown, wherein, one side of each of the two plate-shaped rollers 4 is provided with a winding drum 5, one winding drum 5 corresponds to a coiling machine, and the other winding drum 5 corresponds to an uncoiling machine; in order to reduce the length of the base metal which is not rolled, the method for improving the yield of the single-stand reversible rolling mill in the process of rolling the base metal with leading strips welded at the head and the tail comprises the following steps:
step 1, respectively arranging a coiling machine and an uncoiling machine on two sides of a single-stand reversible rolling mill, wherein a winding drum of the uncoiling machine coils base materials with heads and tails welded with leading strips, a welding seam at the head of the base materials is formed between the leading strips at the head of the base materials and the base materials, a welding seam at the tail of the base materials is formed between the leading strips at the tail of the base materials and the base materials, the leading strips at the head of the base materials on the uncoiling machine are coiled by using the coiling machine, and when the welding seam at the head of the base materials reaches an Ncm position outside a roll seam outlet of the rolling mill, the coiling work is stopped; n > 0;
when the welding seam at the head part of the base metal is positioned outside the roll seam outlet, the method comprises the following steps: stopping the coiling operation when the welding seam stays between the copper roller wiper corresponding to the coiler side and the roll seam of the rolling mill, keeping a certain tension on the base metal between the coiler and the uncoiler at the moment, ensuring subsequent rolling, and enabling the welding seam at the head of the base metal to sequentially pass through the copper roller wiper corresponding to the coiler side and the four roller wiper so as to ensure that more base metal is rolled, thereby improving the yield;
step 2, starting the single-stand reversible rolling mill to work so that the rolling mill can work at the minimum rolling speed V0m/min constant-speed operation, and simultaneously controlling the four-roller wiper to be opened until the welding line at the head of the base metal is sequentially at the minimum rolling speed V0Controlling the four-roller wiper to close after the m/min passes through the copper roller wiper and the four-roller wiper at a constant speed; then, accelerating the rolling mill to a normal rolling speed to perform primary rolling on the base metal; in the present example, the minimum rolling speed V0＝20；
Because the welding seam at the head of the base metal is positioned outside the roll gap outlet in the step 1, the welding seam at the head of the base metal needs to sequentially pass through the copper roller wiper and the four-roller wiper in the process of rolling the base metal, and because the bulge of the welding seam easily causes excessive impact on the copper roller wiper when the rolling mill is at an excessively high speed and easily causes damage to the four-roller wiper when the welding seam directly passes through the closed four-roller wiper, the four-roller wiper is opened and the welding seam passes through the copper roller wiper at the minimum rolling speed in the embodiment, so that the four-roller wiper and the copper roller wiper can be effectively protected, and the quality of the base metal for subsequent rolling is ensured;
and 3, utilizing the base material length calculation function of the reversible rolling mill, when Km is calculated as the base material at the tail part of the base material distance to a certain moment, automatically decelerating the rolling mill to V1m/min, wherein the speed is used for ensuring that a subsequent operator can observe a welding seam at the tail part of the base metal, and then, the rolling mill always keeps running at the speed; k>0, in this example, V1＝50；
Step 4, when the welding seam at the tail part of the base metal is positioned right above the plate-shaped roller, an operator immediately presses an operation button, a control system automatically controls the four-roller wiper to be opened, and the welding seam at the tail part of the base metal is decelerated to the minimum rolling speed V by the single-stand reversing mill before entering the four-roller wiper0m/min；
Because the control system cannot automatically identify the welding seam at the tail part of the base material, an operator needs to manually press an operation button when the welding seam at the tail part of the base material is positioned right above the plate-shaped roller, and the control system can automatically control the four-roller wiper to be started at the moment; in addition, in order to avoid that the welding seam enters the four-roller wiper due to the difference of personal reaction time when an operator performs manual control, a control system in the rolling mill is required to perform variable deceleration adjustment, and when the operator presses an operation button, the welding seam at the tail part of the base metal is ensured to be decelerated to the minimum rolling speed by the single-stand reversible rolling mill before entering the four-roller wiper;
the stop position of the welding line at the tail part of the parent metal when the rolling mill stops is set in the program, so that the rolling mill can be accurately controlled to stop through the control system, the production safety is ensured, the length of the unwrinkled parent metal is reduced and the yield is improved by stopping the welding line at the tail part of the parent metal between the copper roller wiper and the rolling mill; in the embodiment, the value range of M is 20-30;
because the welding seam at the tail part of the base material is stopped at the outer side of the four-roller wiper in the existing method, and the distance between the roller gap of the rolling mill and the welding seam at the tail part of the base material is 1.5m in the actual production, the unfinished length of the base material in the existing method is 3 m/coil, and the welding seam at the tail part of the base material can be stopped at the position 20 cm-30 cm away from the roller gap of the rolling mill by the method in the invention, the unfinished length of the base material in the method is reduced to 0.4-0.6 m/coil, and the yield is improved;
step 6, taking the uncoiler after the step 5 as a coiler, taking the coiler as the uncoiler, coiling the uncoiler by adopting the same method in the step 1, and performing second-pass rolling on the base metal by adopting the same method in the steps 2 to 5, wherein the first-pass rolling and the second-pass rolling process finish the first reciprocating rolling of the base metal;
step 7, continuously carrying out reciprocating rolling on the base metal according to the same method in the steps 1-6, and finally enabling the pressing thickness of the base metal to reach the set thickness;
in the prior art, the pressure control mode of the copper roller wiper is a single pressure setting mode, but the single pressure setting method can cause damage to the copper roller wiper, so in this embodiment, in order to protect the copper roller wiper, a copper roller pressure control model is established in a control system, so that the pressure of the copper roller wiper is adjusted in a direct ratio according to the rolling speed of the single-stand reversing mill. In the embodiment, when the rolling speed of the single-stand reversible rolling mill is between 20 and 60m/min, the pressure of the copper roller wiper is correspondingly adjusted to be between 20 and 60 bar/m; when the rolling speed of the single stand reversing mill is more than 60m/min, the pressure of the copper roll wiper is adjusted to the pressure in normal operation. For example: when the rolling speed of the single-stand reversing mill is 20m/min, the pressure of the copper roller wiper is correspondingly adjusted to be 20bar/m, so that the welding seam passes through the copper roller wiper at the minimum rolling speed and when the pressure between the copper roller wipers is minimum, the impact injury of the welding seam on the copper roller wiper can be effectively avoided through the mode, and the protection of the copper roller wiper is realized; meanwhile, when the rolling speed of the single-stand reversing mill is 30m/min, the pressure of the copper roller wiper is correspondingly adjusted to 30bar/m, and sequentially, when the rolling speed of the single-stand reversing mill is 60m/min, the pressure of the copper roller wiper is correspondingly adjusted to 60bar/m, so that the pressure of the copper roller wiper is proportionally adjusted according to the rolling speed of the single-stand reversing mill.
And the second method comprises the following steps: in the prior art, the base material with no leading strip welded at the head and the tail is rolled, the yield damage is serious when the incoming material has no leading strip in the method, and the length of the base material which is not rolled is the length of a rolling line (the distance between a left winding drum and a right winding drum) + the length of the strip steel on a winding drum at a winding machine side + the length of the strip steel left on a winding drum at a unwinding side; the length of the rolling line is fixed and cannot be changed, and the length of the residual strip steel on the uncoiling side winding drum is basically fixed, so that the method for improving the yield can only change the length of the strip steel on the coiling machine side winding drum.
In order to solve the problems, the method for improving the yield of the single-stand reversible rolling mill in the process of rolling the base metal without leading strips at the head and the tail comprises the following steps: and using a belt wrapper to perform auxiliary wrapping on the base material coiled outside the winding drum.
For example: when the original process is used for rolling, 3 circles of base materials need to be coiled on the side winding drum of the coiling machine to ensure normal operation, when the belt coiling assistor is used for assisting, 1.5 circles of base materials need to be coiled on the side winding drum of the coiling machine, and the belt coiling assistor is used on the outer side of 1.5 circles of base materials to ensure that 1.5 circles of base materials are tightly coiled, so that the method can ensure normal operation while reducing the length of the unwritten base materials, and improves the yield.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (5)
1. A method for improving the yield of a single-stand reversing mill is characterized in that: the following two cases are included:
the method for improving the yield of the single-stand reversible rolling mill in the process of rolling the base metal with leading strips welded at the head and the tail comprises the following steps:
step 1, respectively arranging a coiling machine and an uncoiling machine on two sides of a single-stand reversible rolling mill, wherein a winding drum of the uncoiling machine coils a base material with a head part and a tail part both welded with leading strips, a welding seam of the head part of the base material is formed between the leading strip of the head part of the base material and the base material, a welding seam of the tail part of the base material is formed between the leading strip of the tail part of the base material and the base material, the leading strip of the head part of the base material on the uncoiling machine is coiled by using the coiling machine, and when the welding seam of the head part of the base material reaches a position N cm outside a roll seam outlet;
step 2, starting the single-stand reversible rolling mill to work so that the rolling mill can work at the minimum rolling speed V0m/min constant-speed operation, and simultaneously controlling the four-roller wiper to be opened until the welding line at the head of the base metal is sequentially at the minimum rolling speed V0Controlling the four-roller wiper to close after the m/min passes through the copper roller wiper and the four-roller wiper at a constant speed; then, accelerating the rolling mill to a normal rolling speed to perform primary rolling on the base metal;
and 3, utilizing the base material length calculation function of the reversible rolling mill, when K m is calculated as the base material at the tail part of the base material distance at a certain moment, automatically decelerating the rolling mill to V1m/min, the speed is used for ensuring that a subsequent operator can observe a welding seam at the tail part of the base metal, and then, rollingThe machine always keeps running at the speed;
step 4, when the welding seam at the tail part of the base metal is positioned right above the plate-shaped roller, an operator immediately presses an operation button, a control system automatically controls the four-roller wiper to be opened, and the welding seam at the tail part of the base metal is decelerated to the minimum rolling speed V by the single-stand reversing mill before entering the four-roller wiper0m/min；
Step 5, the welding seam at the tail part of the base metal is rolled at the minimum rolling speed V0m/min passes through a four-roller wiper and a copper roller wiper at a constant speed, and the minimum rolling speed V is continuously kept0M/min, rolling, and after a certain distance, automatically controlling the rolling mill to decelerate by a control system, and stopping a welding seam at the tail part of the base metal at a position M cm away from a roll gap when the rolling mill stops, thereby finishing the first rolling of the base metal;
step 6, taking the uncoiler after the step 5 as a coiler, taking the coiler as the uncoiler, coiling the uncoiler by adopting the same method in the step 1, and performing second-pass rolling on the base metal by adopting the same method in the steps 2 to 5, wherein the first-pass rolling and the second-pass rolling process finish the first reciprocating rolling of the base metal;
step 7, continuously carrying out reciprocating rolling on the base metal according to the same method in the steps 1-6, and finally enabling the pressing thickness of the base metal to reach the set thickness;
the method for improving the yield of the single-stand reversible rolling mill in the process of rolling the base metal without leading strips at the head and the tail comprises the following steps: and using a belt wrapper to perform auxiliary wrapping on the base material coiled outside the winding drum.
2. The method of increasing the throughput of a single stand reversing mill according to claim 1, wherein: the value range of N in the step 1 is 10-20.
3. The method of increasing the throughput of a single stand reversing mill according to claim 1, wherein: and the step 2 and the step 5 also comprise establishing a copper roller pressure control model in the control system, so that the pressure of the copper roller wiper is adjusted in proportion according to the rolling speed of the single-stand reversible rolling mill.
4. The method of increasing the throughput of a single stand reversing mill according to claim 3, wherein: when the rolling speed of the single-stand reversible rolling mill in the step 2 and the step 5 is between 20 and 60m/min, the pressure of the copper roller wiper is correspondingly adjusted to between 20 and 60 bar/m; when the rolling speed of the single stand reversing mill is more than 60m/min, the pressure of the copper roll wiper is adjusted to the pressure in normal operation.
5. The method of increasing the throughput of a single stand reversing mill according to claim 1, wherein: the value range of M in the step 5 is as follows: 20 to 30.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112756990A (en) * | 2020-12-31 | 2021-05-07 | 浦项(张家港)不锈钢股份有限公司 | Control method of stainless steel multi-coil continuous operation grinding unit |
| CN112756989A (en) * | 2020-12-31 | 2021-05-07 | 浦项(张家港)不锈钢股份有限公司 | Method for enabling welding line of stainless steel multi-coil continuous operation grinding unit to pass through wiper |
| CN112809399A (en) * | 2020-12-31 | 2021-05-18 | 浦项(张家港)不锈钢股份有限公司 | Automatic threading and coiling method for stainless steel multi-coil continuous operation grinding unit |
| CN114505342A (en) * | 2022-03-04 | 2022-05-17 | 江苏省沙钢钢铁研究院有限公司 | Method for improving yield of cold-rolled steel strip |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5483659A (en) * | 1977-12-16 | 1979-07-03 | Toshiba Corp | Automatic speed reducer |
| JPS57124504A (en) * | 1981-01-28 | 1982-08-03 | Hitachi Ltd | Continuous rolling and finishing installation |
| CN202129282U (en) * | 2011-06-16 | 2012-02-01 | 北京冶金工程技术联合开发研究中心 | Surface oil removing device for high-speed reversible cold rolling strip |
| CN102847718A (en) * | 2012-08-17 | 2013-01-02 | 中冶南方工程技术有限公司 | Cleaning process and device for roller surface of cold rolled stainless steel flattening rolling machine |
| CN202877233U (en) * | 2012-05-09 | 2013-04-17 | 中国重型机械研究院有限公司 | Reversible cold rolling unit used for rolling plain carbon steel and stainless steel in mixed mode |
| CN104998902A (en) * | 2015-07-10 | 2015-10-28 | 宝钛集团有限公司 | Wide pure-nickel strip cold-rolling process |
| CN105964688A (en) * | 2016-06-21 | 2016-09-28 | 广西梧州市金海不锈钢有限公司 | Auto-reversible cold rolling control device and control method |
-
2020
- 2020-03-27 CN CN202010228843.2A patent/CN111389908B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5483659A (en) * | 1977-12-16 | 1979-07-03 | Toshiba Corp | Automatic speed reducer |
| JPS57124504A (en) * | 1981-01-28 | 1982-08-03 | Hitachi Ltd | Continuous rolling and finishing installation |
| CN202129282U (en) * | 2011-06-16 | 2012-02-01 | 北京冶金工程技术联合开发研究中心 | Surface oil removing device for high-speed reversible cold rolling strip |
| CN202877233U (en) * | 2012-05-09 | 2013-04-17 | 中国重型机械研究院有限公司 | Reversible cold rolling unit used for rolling plain carbon steel and stainless steel in mixed mode |
| CN102847718A (en) * | 2012-08-17 | 2013-01-02 | 中冶南方工程技术有限公司 | Cleaning process and device for roller surface of cold rolled stainless steel flattening rolling machine |
| CN104998902A (en) * | 2015-07-10 | 2015-10-28 | 宝钛集团有限公司 | Wide pure-nickel strip cold-rolling process |
| CN105964688A (en) * | 2016-06-21 | 2016-09-28 | 广西梧州市金海不锈钢有限公司 | Auto-reversible cold rolling control device and control method |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112756990A (en) * | 2020-12-31 | 2021-05-07 | 浦项(张家港)不锈钢股份有限公司 | Control method of stainless steel multi-coil continuous operation grinding unit |
| CN112756989A (en) * | 2020-12-31 | 2021-05-07 | 浦项(张家港)不锈钢股份有限公司 | Method for enabling welding line of stainless steel multi-coil continuous operation grinding unit to pass through wiper |
| CN112809399A (en) * | 2020-12-31 | 2021-05-18 | 浦项(张家港)不锈钢股份有限公司 | Automatic threading and coiling method for stainless steel multi-coil continuous operation grinding unit |
| CN112809399B (en) * | 2020-12-31 | 2022-08-16 | 浦项(张家港)不锈钢股份有限公司 | Automatic threading and coiling method for stainless steel multi-coil continuous operation grinding unit |
| CN114505342A (en) * | 2022-03-04 | 2022-05-17 | 江苏省沙钢钢铁研究院有限公司 | Method for improving yield of cold-rolled steel strip |
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