Roll gap setting method for phi 17.3 mm round steel of Morgan fifth-generation high-speed wire rod mill

Abstract

The invention discloses a roll gap setting method for phi 17.3 mm round steel of a Morgan fifth-generation high-speed wire mill. The roll gap setting method specifically comprises the following steps that A, a control computer is established and connected with 1-20 passes of production control computers; b, ensuring that two adjacent racks in the finishing mill group are subjected to micro-tension rolling according to the design of the sectional area and the transmission ratio of the rolled piece, independently controlling 1-20 passes of rolling mills according to a production control computer, and determining the sectional area of the incoming rolled piece entering the finishing mill group according to the rolling specification and the rotating speed and the transmission ratio of each pass of the finishing mill, determining the total elongation coefficient according to the raw material blank and the sectional area of the Morgan rolling mill finished product; and C, determining parameters of 1-20-pass production roll gap values of the round steel with the diameter of 17.3 mm according to the total elongation coefficient, classifying the parameters, storing the parameters in a control computer, and connecting the control computer with 1-20-pass production control computers to correspond to roll gap set values of all sorties one by one.

Description

Technical Field

[0001] The invention belongs to the technical field of metal pressure processing in the metallurgical industry, and specifically relates to a roll gap setting method for Φ17.3mm round steel of a Morgan fifth-generation high-speed wire rolling mill. Background Art

[0002] With the rapid development of my country's national economy, the metal products industry has made certain progress in both production capacity and products. At the same time, more requirements have been put forward for the raw materials needed by the industry, mainly manifested in: 1. In order to be more economical and convenient, the demand for non-standard specifications of wire rods has increased. 2. The single coil weight of wire rods is expected to be improved on the current basis. 3. The demand for high-quality steel and alloy steel has increased significantly. As the mainstream rolling mill model for domestic wire rod production, the Morgan fifth-generation high-speed wire rod mill has a design product outline of finished products of ф5.5mm-ф20mm with a 0.5mm increment of smooth wire rods. In order to meet the downstream metal products enterprises' progress in deep processing technology of wire rods and the expansion of deep processing products, the market has a large demand for Φ17.3mm wire rods, and many wire rod mills cannot produce them due to the limitations of equipment level and process design. In order to meet the personalized needs of users, a new design of Φ17.3mm specifications is required for production.

[0003] In view of the above factors, a roll gap setting method for Φ17.3mm round steel of Morgan's fifth-generation high-speed wire rod mill is provided, which breaks through the original design of Morgan's fifth-generation high-speed wire rod mill and makes necessary technical guarantees to expand the product outline of the production line, so that the process of producing Φ17.3mm round steel using Morgan's fifth-generation high-speed wire rod mill is stable, the steel piling accidents are reduced, and the utilization rate and hourly output of the mill are improved. Summary of the invention

[0004] The object of the present invention is to provide a method for setting the roll gap of Φ17.3mm round steel of Morgan fifth-generation high-speed wire rolling mill to solve the problems raised in the above-mentioned background technology.

[0005] The object of the present invention is to be achieved through the following technical scheme: a roll gap setting method for Φ17.3mm round steel of Morgan fifth-generation high-speed wire rolling mill, specifically comprising the following steps:

[0006] A. Establish a control computer and connect it to the production control computers for passes 1 to 20 respectively;

[0007] B. According to the design of the cross-sectional area and transmission ratio of the rolled product, ensure that the two adjacent stands in the finishing mill are in micro-tension rolling. The 1-20 pass rolling mill is independently controlled by the production control computer. The cross-sectional area of ​​the incoming rolled product entering the finishing mill is determined according to the rolling specifications and the speed and transmission ratio of each pass of the finishing mill. The total elongation coefficient is then determined according to the cross-sectional area of ​​the raw material billet and the finished product of the Morgan mill;

[0008] C. According to the total elongation coefficient, the parameters of the roll gap value of Φ17.3mm round steel 1-20 passes are classified and stored in the control computer. The control computer is connected with the 1-20 pass production control computer to correspond to the roll gap setting value of each batch;

[0009] D. According to the roll gap extension coefficient of production passes 1-20, the production control computer is used to set and control each rolling mill accordingly.

[0010] Furthermore, in step B, the cross-sectional area of ​​each frame is calculated according to the elongation coefficient, the hole size of each frame is designed, and the roll gap value of each frame is re-given according to the empirical data of production deformation, and the roll gap value of each frame is stored in the control computer and distributed to the production control computer through the roll gap value control computer of each frame.

[0011] Further, the specific steps of step B are as follows:

[0012] The total elongation coefficient is determined by the billet and product specifications. According to the maximum pass elongation coefficient allowed by the elliptical-circular hole system and the motor capacity of the rolling mill, the top rolling pass is 20 passes;

[0013] Reasonably allocate the elongation coefficient of each pass according to the total elongation coefficient and the 20 rolling passes;

[0014] Determine the cross-sectional area of ​​each pass according to the cross-sectional area of ​​the blank and the pass elongation coefficient;

[0015] Design the pass pass parameters and roll gap value according to the cross-sectional area of ​​each pass;

[0016] The control computer distributes and controls the pass hole parameters and roll gap values ​​set by the production control computer.

[0017] Furthermore, the cross-sectional area of ​​each pass is determined according to the cross-sectional area of ​​the blank and the pass elongation coefficient, and the roll gap is adjusted to a set value by controlling the hydraulic cylinder servo system through the production control computer.

[0018] Further, the method comprises the following steps:

[0019] According to the billet 150 2 The billet and product specifications are Φ17.3mm, and the total elongation coefficient is determined to be 95.76;

[0020] According to the maximum pass elongation factor allowed by the elliptical-circular hole system and the motor capacity of the rolling mill, the rolling pass is selected as 20 passes;

[0021] There are 20 passes in total for roughing and pre-finishing rolling, 2 passes for finishing mill, 19 and 20 passes for finishing mill, and the rest are empty passes;

[0022] Reasonably allocate the elongation coefficient of each pass according to the total elongation coefficient of 95.76 and 20 rolling passes;

[0023] Determine the cross-sectional area of ​​the incoming rolled piece entering the finishing mill according to the rolling specifications and the speed and transmission ratio of each pass of the finishing mill, and then determine the total elongation coefficient according to the cross-sectional area of ​​the raw material billet and the finished product of the Morgan rolling mill;

[0024] The parameters for the roll gap values ​​of Φ17.3mm round steel in 1-20 passes are classified according to the total elongation coefficient and stored in the control computer. The control computer is connected to the 1-20 pass production control computer to correspond to the roll gap setting values ​​of each pass.

[0025] Furthermore, the 1-20 pass production control computer is independently set and connected to the control computer, and the 1-20 pass production control computer controls the hydraulic cylinder servo system roll gap to reach the set value, and the control computer stores the adjusted roll gap set value.

[0026] The control computer calculates the roll gap compensation value generated by the 1-20 pass production control computer, and adds the roll gap compensation value to the initial production control computer roll gap calculation when the roll gap is set.

[0027] Furthermore, the adjacent racks of the Φ17.3mm round steel 1-20 passes are vertically intersected at +45° / -45°, and different transmission ratios are formed between the adjacent racks through the speed increaser, cone box and roller box.

[0028] Furthermore, the elongation coefficient of the Φ17.3mm round steel 1-20 pass racking machine is not greater than 1.4 based on the elliptical-circular hole type system.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] The present invention is applicable to enterprises producing wire rods with high-speed wire mills. It breaks through the original design of the fifth-generation Morgan high-speed wire mill and provides necessary technical guarantees for expanding the product outline of the production line, making the production process of Φ17.3mm round steel using the fifth-generation Morgan high-speed wire mill stable, reducing steel pile accidents, and improving the utilization rate and hourly output of the mill. It has practical promotion value for domestic enterprises using the fifth-generation Morgan high-speed wire mill. Benefit description: 1,000 tons of Φ17.3mm round steel products are produced each year, with a profit of 100 yuan per ton, so the direct economic benefit is about 1000X100=10 (million yuan) per year. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] A method for setting the roll gap of Φ17.3mm round steel of Morgan fifth-generation high-speed wire rolling mill, specifically comprising the following steps:

[0034] A. Establish a control computer and connect it to the production control computers for passes 1 to 20 respectively;

[0035] B. According to the design of the cross-sectional area and transmission ratio of the rolled product, ensure that the two adjacent stands in the finishing mill are in micro-tension rolling. The 1-20 pass rolling mill is independently controlled by the production control computer. The cross-sectional area of ​​the incoming rolled product entering the finishing mill is determined according to the rolling specifications and the speed and transmission ratio of each pass of the finishing mill. The total elongation coefficient is then determined according to the cross-sectional area of ​​the raw material billet and the finished product of the Morgan mill;

[0036] C. According to the total elongation coefficient, the parameters of the roll gap value of Φ17.3mm round steel 1-20 passes are classified and stored in the control computer. The control computer is connected with the 1-20 pass production control computer to correspond to the roll gap setting value of each batch;

[0037] D. According to the roll gap extension coefficient of production passes 1-20, the production control computer is used to set and control each rolling mill accordingly.

[0038] In step B, the cross-sectional area of ​​each frame is calculated according to the elongation coefficient, the hole size of each frame is designed, and the roll gap value of each frame is re-given according to the empirical data of production deformation. The roll gap value of each frame is stored in the control computer and distributed to the production control computer through the roll gap value control computer of each frame.

[0039] The specific steps of step B are as follows:

[0040] The total elongation coefficient is determined by the billet and product specifications. According to the maximum pass elongation coefficient allowed by the elliptical-circular hole system and the motor capacity of the rolling mill, the top rolling pass is 20 passes;

[0041] Reasonably allocate the elongation coefficient of each pass according to the total elongation coefficient and the 20 rolling passes;

[0042] Determine the cross-sectional area of ​​each pass according to the cross-sectional area of ​​the blank and the pass elongation coefficient;

[0043] Design the pass pass parameters and roll gap value according to the cross-sectional area of ​​each pass;

[0044] The control computer distributes and controls the pass hole parameters and roll gap values ​​set by the production control computer.

[0045] The cross-sectional area of ​​each pass is determined according to the cross-sectional area of ​​the blank and the pass elongation coefficient, and the roll gap is adjusted to the set value by controlling the hydraulic cylinder servo system through the production control computer.

[0046] The roll gap setting method of the Morgan fifth-generation high-speed wire rolling mill for Φ17.3mm round steel comprises the following steps;

[0047] According to the billet 150 2 The billet and product specifications are Φ17.3mm, and the total elongation coefficient is determined to be 95.76;

[0048] According to the maximum pass elongation factor allowed by the elliptical-circular hole system and the motor capacity of the rolling mill, the rolling pass is selected as 20 passes;

[0049] There are 20 passes in total for roughing and pre-finishing rolling, 2 passes for finishing mill, 19 and 20 passes for finishing mill, and the rest are empty passes;

[0050] Reasonably allocate the elongation coefficient of each pass according to the total elongation coefficient of 95.76 and 20 rolling passes;

[0051] Determine the cross-sectional area of ​​the incoming rolled piece entering the finishing mill according to the rolling specifications and the speed and transmission ratio of each pass of the finishing mill, and then determine the total elongation coefficient according to the cross-sectional area of ​​the raw material billet and the finished product of the Morgan rolling mill;

[0052] The parameters for the roll gap values ​​of Φ17.3mm round steel in 1-20 passes are classified according to the total elongation coefficient and stored in the control computer. The control computer is connected to the 1-20 pass production control computer to correspond to the roll gap setting values ​​of each pass.

[0053] The present invention breaks through the original design of Morgan's fifth-generation high-speed wire rod mill, broadens the product outline of the production line and makes necessary technical guarantees, so that the process of producing Φ17.3mm round steel using Morgan's fifth-generation high-speed wire rod mill is stable, the steel piling accidents are reduced, and the utilization rate and hourly output of the mill are improved. For domestic enterprises using Morgan's fifth-generation high-speed wire rod mill, we believe that this invention is of great practical promotion value.

[0054] Morgan's fifth-generation high-speed wire mill uses a single motor collective drive, and the adjacent frames are vertically intersected at +45° / -45°. The speed increaser, cone box, and roller box are used to form different transmission ratios between adjacent frames. The transmission ratio is fixed, so the speed ratio between two adjacent frames is fixed. The reasonable design of the cross-sectional area of ​​the rolled product and the transmission ratio ensures that the two adjacent frames in the finishing mill are micro-tension rolled. Then, through precise hole design, roll turning, and roll gap adjustment, the actual cross-sectional area of ​​the rolled product is ensured to reach the standard design cross-sectional area. The finishing rolling adopts an ellipse-circle-ellipse-circle...hole system.

[0055] The elongation coefficient of the Φ17.3mm round steel 1-20 pass racking machine is not greater than 1.4 based on the elliptical-circular hole system.

[0056] According to the requirement that the elongation coefficient of the elliptical-circular hole system is not greater than 1.4, the 150 2 mm square billet rolling Φ17.3mm round steel total elongation coefficient 95.76 design selection after 20 passes rolling Φ17.3mm specification each pass elongation coefficient and hole type parameter design are shown in the following table

[0057] Design parameters of each pass of Φ17.3mm round steel for 20 passes

[0058]

[0059]

[0060]

[0061] The 1-20 pass production control computer is independently set and connected to the control computer. The 1-20 pass production control computer controls the roll gap of the hydraulic cylinder servo system to reach the set value, and the control computer stores the adjusted roll gap set value.

[0062] The control computer calculates the roll gap compensation value generated by the 1-20 pass production control computer, and adds the roll gap compensation value to the initial production control computer roll gap calculation when the roll gap is set.

[0063] The adjacent racks of the Φ17.3mm round steel 1-20 passes are vertically intersected at +45° / -45°, and different transmission ratios are formed between the adjacent racks through the speed increaser, cone box and roller box.

[0064] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

[0065] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A method for setting the roll gap of Φ17.3mm round steel for Morgan fifth-generation high-speed wire rolling mill, characterized in that: Specifically include the following steps: A. Establish a control computer and connect it to the production control computers for passes 1 to 20 respectively; B. According to the design of the cross-sectional area and transmission ratio of the rolled product, ensure that the two adjacent stands in the finishing mill are in micro-tension rolling. The 1-20 pass rolling mill is independently controlled by the production control computer. The cross-sectional area of ​​the incoming rolled product entering the finishing mill is determined according to the rolling specifications and the speed and transmission ratio of each pass of the finishing mill. The total elongation coefficient is then determined according to the cross-sectional area of ​​the raw material billet and the finished product of the Morgan mill; C. According to the total elongation coefficient, the parameters of the roll gap value of Φ17.3mm round steel 1-20 passes are classified and stored in the control computer. The control computer is connected with the 1-20 pass production control computer to correspond to the roll gap setting value of each batch; D. According to the roll gap extension coefficient of production passes 1-20, the production control computer is used to set and control each rolling mill accordingly.

2. The roll gap setting method for Φ17.3 mm round steel of Morgan fifth generation high speed wire rolling mill according to claim 1, characterized in that: In step B, the cross-sectional area of ​​each frame is calculated according to the elongation coefficient, the hole size of each frame is designed, and the roll gap value of each frame is re-given according to the empirical data of production deformation. The roll gap value of each frame is stored in the control computer and distributed to the production control computer through the roll gap value control computer of each frame.

3. The roll gap setting method for Φ17.3 mm round steel of Morgan fifth generation high speed wire rolling mill according to claim 2, characterized in that: The specific steps of step B are as follows: The total elongation coefficient is determined by the billet and product specifications. According to the maximum pass elongation coefficient allowed by the elliptical-circular hole system and the motor capacity of the rolling mill, the top rolling pass is 20 passes; Reasonably allocate the elongation coefficient of each pass according to the total elongation coefficient and the 20 rolling passes; Determine the cross-sectional area of ​​each pass according to the cross-sectional area of ​​the blank and the pass elongation coefficient; Design the pass pass parameters and roll gap value according to the cross-sectional area of ​​each pass; The control computer distributes and controls the pass hole parameters and roll gap values ​​set by the production control computer.

4. The roll gap setting method for Φ17.3 mm round steel of Morgan fifth generation high speed wire rolling mill according to claim 3, characterized in that: The cross-sectional area of ​​each pass is determined according to the cross-sectional area of ​​the blank and the pass elongation coefficient, and the roll gap is adjusted to the set value by controlling the hydraulic cylinder servo system through the production control computer.

5. The roll gap setting method for Φ17.3 mm round steel of Morgan fifth generation high speed wire rolling mill according to claim 4, characterized in that: The method comprises the following steps: According to the billet 150 2 The billet and product specifications are Φ17.3mm, and the total elongation coefficient is determined to be 95.76; According to the maximum pass elongation factor allowed by the elliptical-circular hole system and the motor capacity of the rolling mill, the rolling pass is selected as 20 passes; There are 20 passes in total for roughing and pre-finishing rolling, 2 passes for finishing mill, 19 and 20 passes for finishing mill, and the rest are empty passes; Reasonably allocate the elongation coefficient of each pass according to the total elongation coefficient of 95.76 and 20 rolling passes; Determine the cross-sectional area of ​​the incoming rolled piece entering the finishing mill according to the rolling specifications and the speed and transmission ratio of each pass of the finishing mill, and then determine the total elongation coefficient according to the cross-sectional area of ​​the raw material billet and the finished product of the Morgan rolling mill; The parameters for the roll gap values ​​of Φ17.3mm round steel in 1-20 passes are classified according to the total elongation coefficient and stored in the control computer. The control computer is connected to the 1-20 pass production control computer to correspond to the roll gap setting values ​​of each pass.

6. The roll gap setting method for Φ17.3 mm round steel of Morgan fifth generation high speed wire rolling mill according to claim 5, characterized in that: The 1-20 pass production control computer is independently set and connected to the control computer, and the 1-20 pass production control computer controls the roll gap of the hydraulic cylinder servo system to reach the set value, and the control computer stores the adjusted roll gap set value; The control computer calculates the roll gap compensation value generated by the 1-20 pass production control computer, and adds the roll gap compensation value to the initial production control computer roll gap calculation when the roll gap is set.

7. The roll gap setting method for Φ17.3 mm round steel of Morgan fifth generation high speed wire rolling mill according to claim 6, characterized in that: The adjacent racks of the Φ17.3mm round steel 1-20 passes are vertically intersected at +45° / -45°, and different transmission ratios are formed between the adjacent racks through the speed increaser, cone box and roller box.

8. The roll gap setting method for Φ17.3 mm round steel of Morgan fifth generation high speed wire rolling mill according to claim 7, characterized in that: The elongation coefficient of the Φ17.3mm round steel 1-20 pass racking machine is not greater than 1.4 based on the elliptical-circular hole system.

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