CN117181806A - Roll gap setting method for Phi 22.3mm specification round steel of Morgan fifth-generation high-speed wire rolling mill - Google Patents
Roll gap setting method for Phi 22.3mm specification round steel of Morgan fifth-generation high-speed wire rolling mill Download PDFInfo
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- CN117181806A CN117181806A CN202311019203.0A CN202311019203A CN117181806A CN 117181806 A CN117181806 A CN 117181806A CN 202311019203 A CN202311019203 A CN 202311019203A CN 117181806 A CN117181806 A CN 117181806A
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Abstract
The invention discloses a roll gap setting method of a Morgan five-generation high-speed wire rod rolling mill phi 22.3mm specification round steel, which comprises the following steps: determining that the total extension coefficient is 57.6 according to the blank 1502 square blank and the product specification size phi 22.3 mm; selecting 18 rolling passes; the rough and medium rolling and pre-finish rolling are 18 times in total, the finishing mill group must use two times so that the finishing mill selects 2 passes, the finishing mill selects 21 and 22, and the rest is the overhead times. Reasonably distributing each pass extension coefficient according to the total extension coefficient of 57.6 and 18 passes of the rolling pass; determining the sectional area of each pass according to the sectional area of the blank and the pass extension coefficient; and designing pass hole type parameters and roll gap values according to the sectional areas of the passes. The invention enables the production of round steel with the specification of phi 22.3mm by using a Morgan fifth-generation high-speed wire rolling mill to break through the outline of the product, ensures stable production process, reduces steel stacking accidents, and improves the utilization rate of the rolling mill and the hour yield of the rolling mill.
Description
Technical Field
The invention relates to the field of metal pressure processing in the metallurgical industry, in particular to a roll gap setting method for round steel with the specification of phi 22.3mm of a Morgan fifth-generation high-speed wire rolling mill.
Background
With the rapid development of national economy in China, the metal product industry has certain progress in both productivity and products, and more requirements are put forward on raw materials required by the industry, and the main expression is as follows: 1. for greater economy and convenience, there is an increasing demand for non-standard wire rod gauges. 2. The single coil weight of wire rods is expected to increase over the current ones. 3. The demand for high quality steels and alloy steels has increased significantly. The Morgan five-generation high-speed wire rod rolling mill is used as a main flow rolling mill type for producing domestic wire rod, the outline of the product is designed into a finished product phi 5.5 mm-phi 20mm smooth surface wire rod which is gradually increased by 0.5mm, in order to meet the progress of the deep processing technology of the wire rod by downstream metal product enterprises and the expansion of the deep processing products, the market has larger demand on the wire rod with phi 22.3mm specification, and a plurality of wire rod rolling mills cannot be produced under the limitation of equipment level and process design, so that the production with phi 22.3mm specification is required to be newly designed for meeting the individual needs of users, the product outline can be widened, the technical capability can also be reserved, and the minor hole type design of each phi 22.3mm specification in the Morgan five-generation high-speed wire rod rolling mill is also a key link.
Disclosure of Invention
The invention aims to provide a roll gap setting method for phi 22.3mm specification round steel of a Morgan five-generation high-speed wire rolling mill, so that the production of the phi 22.3mm specification round steel by using the Morgan five-generation high-speed wire rolling mill can break through a product outline, the production process is stable, steel stacking accidents are reduced, the utilization rate of the rolling mill and the small rolling mill output are improved, and the method is considered to have practical popularization value for enterprises using the Morgan five-generation high-speed wire rolling mill in China.
In order to solve the technical problems, the invention adopts the following technical scheme:
the invention relates to a method for manufacturing a semiconductor device, comprising the following steps:
(1) Determining that the total extension coefficient is 57.6 according to the blank 1502 square blank and the product specification size phi 22.3 mm;
(2) According to the maximum pass extension coefficient allowed by the oval-round hole system and the motor capacity of the rolling mill, selecting 18 rolling passes;
(3) The rough and medium rolling and pre-finish rolling are 18 times in total, the finishing mill group must use two times so that the finishing mill selects 2 passes, the finishing mill selects 21 and 22, and the rest is the overhead times. Reasonably distributing each pass extension coefficient according to the total extension coefficient of 57.6 and 18 passes of the rolling pass;
(4) Determining the sectional area of each pass according to the sectional area of the blank and the pass extension coefficient;
(5) Designing pass hole type parameters and roll gap values according to the sectional areas of the passes;
(6) Manufacturing and installing guide design, rollers, roller rings and guide spare parts according to hole type parameters;
(7) And (3) performing trial production, summarizing and correcting the roll gap value of each pass, and ensuring stable process production and product size precision.
Further, the parameters of each pass of the designed 18-pass phi 22.3mm specification round steel are shown in the following table:
compared with the prior art, the invention has the beneficial technical effects that:
the invention breaks through the original design of the Morgan five-generation high-speed wire rod mill by designing a finished product roll collar for producing wire rods with the specification of phi 22.3mm by using the high-speed wire rod mill, and makes necessary technical guarantees for widening the product outline of a production line, so that the process for producing round steel with the specification of phi 22.3mm by using the Morgan five-generation high-speed wire rod mill is stable, the steel stacking accident is reduced, the utilization rate of the mill and the hour output of the mill are improved, and the Morgan five-generation high-speed wire rod mill is considered to have practical popularization value for enterprises in China.
The Morgan five-generation high-speed wire rod rolling mill adopts single motor collective transmission, adjacent frames are vertically intersected by +45 degrees/45 degrees, different transmission ratios are formed between the adjacent frames through a speed increaser, a cone box and a roller box, the transmission ratios are fixed, so the rotation speed ratio between the two adjacent frames is fixed, and the micro tension rolling of the two adjacent frames in the finishing mill group is ensured through the design of reasonable sectional area of rolled pieces and the transmission ratios. And then the sectional area of the actual rolled piece is ensured to reach the sectional area of the standard design through accurate hole pattern design, roll turning and roll gap adjustment. An oval-round-oval-round … … pass system is adopted in the finish rolling, firstly, the sectional area (height X width) of incoming rolling pieces entering a finishing mill group is determined according to rolling specifications and the rotating speed and the transmission ratio of each pass of a finishing mill, then, the total extension coefficient is determined according to the sectional areas of raw material blanks and finished products of Morgan rolling mills, each frame of extension coefficient is reasonably distributed according to the extension coefficient recommended by the oval-round hole system, each frame of sectional area (height X width) is calculated according to the extension coefficient, each frame of pass size is newly designed, each frame of roll gap value is given again according to empirical data of production deformation, roll matching and machining are carried out according to the pass size, and online debugging is carried out. Finally, the process is smooth, and the dimensional accuracy of the product meets the standard requirement
Detailed Description
A roll gap setting method for a Morgan five-generation high-speed wire rod rolling mill phi 22.3mm specification round steel comprises the following specific steps:
(1) The total elongation coefficient was determined to be 57.6 based on the blank 1502 square blank and the product specification size phi 22.3 mm.
(2) According to the maximum pass extension coefficient and the rolling mill motor capacity allowed by the oval-round hole system, the rolling pass is selected to be 18.
(3) The rough and medium rolling and pre-finish rolling are 18 times in total, the finishing mill group must use two times so that the finishing mill selects 2 passes, the finishing mill selects 21 and 22, and the rest is the overhead times. And reasonably distributing each pass extension coefficient according to the total extension coefficient of 57.6 and the 18 passes of the rolling pass.
(4) And determining the sectional area of each pass according to the sectional area of the blank and the pass extension coefficient.
(5) And designing pass hole type parameters and roll gap values according to the sectional areas of the passes.
(6) And manufacturing and installing the guide design, the roller ring and the guide spare parts according to the hole type parameters.
(7) And (3) performing trial production, summarizing and correcting the roll gap value of each pass, and ensuring stable process production and product size precision.
The roll gap of each pass is compared with the roll gap of the following table 1.
Table 1 design parameters of each pass of 18-pass phi 22.3mm specification round steel
The roll gap setting method for the Morgan five-generation high-speed wire rod rolling mill phi 22.3mm specification round steel breaks through the original design of the Morgan five-generation high-speed wire rod rolling mill, makes necessary technical guarantees for widening the product outline of a production line, ensures that the Morgan five-generation high-speed wire rod rolling mill used for producing the round steel phi 22.3mm specification is stable in process, reduces steel stacking accidents, improves the utilization rate of the rolling mill and the hour output of the rolling mill, and has practical popularization value for enterprises using the Morgan five-generation high-speed wire rod rolling mill in China.
3000 tons of phi 22.3mm round steel products are produced annually, and the profit per ton is 200 yuan, so the direct economic benefit is about: 3000 x200=60 (ten thousand yuan). For enterprises using Morgan five-generation high-speed wire rolling mill in China, the invention is considered to have practical popularization value.
The above embodiments are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solutions of the present invention should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.
Claims (2)
1. A roll gap setting method for a Morgan five-generation high-speed wire rod rolling mill phi 22.3mm specification round steel is characterized by comprising the following steps: comprising the following steps:
(1) Determining that the total extension coefficient is 57.6 according to the blank 1502 square blank and the product specification size phi 22.3 mm;
(2) According to the maximum pass extension coefficient allowed by the oval-round hole system and the motor capacity of the rolling mill, selecting 18 rolling passes;
(3) The rough and medium rolling and pre-finish rolling are 18 times in total, the finishing mill group must use two times so that the finishing mill selects 2 passes, the finishing mill selects 21 and 22, and the rest is the overhead times. Reasonably distributing each pass extension coefficient according to the total extension coefficient of 57.6 and 18 passes of the rolling pass;
(4) Determining the sectional area of each pass according to the sectional area of the blank and the pass extension coefficient;
(5) Designing pass hole type parameters and roll gap values according to the sectional areas of the passes;
(6) Manufacturing and installing guide design, rollers, roller rings and guide spare parts according to hole type parameters;
(7) And (3) performing trial production, summarizing and correcting the roll gap value of each pass, and ensuring stable process production and product size precision.
2. The roll gap setting method of the Morgan five-generation high-speed wire rod mill phi 22.3mm specification round steel according to claim 1, characterized by: the parameters of each pass of the designed 18-pass phi 22.3mm specification round steel are shown in the following table:
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311019203.0A CN117181806A (en) | 2023-08-14 | 2023-08-14 | Roll gap setting method for Phi 22.3mm specification round steel of Morgan fifth-generation high-speed wire rolling mill |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311019203.0A CN117181806A (en) | 2023-08-14 | 2023-08-14 | Roll gap setting method for Phi 22.3mm specification round steel of Morgan fifth-generation high-speed wire rolling mill |
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