阅读说明：本技术 一种无头轧制棒材生产线工艺设备 (Production line process equipment for endless rolled bar ) 是由 白亚斌 周民 马靳江 牛强 于 2019-09-20 设计创作，主要内容包括：本发明属于冶金技术领域,涉及一种无头轧制棒材生产线工艺设备,包括顺次设置的炼钢连铸单元、中间轧制单元、控温成型轧制单元以及成品精整处理单元；所述炼钢连铸单元包括一套浇注平台及多路连铸引导机构。中间轧制单元包括依次布置的第一连轧机组、控温装置及第一剪切设备。控温成型轧制单元包括第二连轧机组、前控温装置、后控温装置和第二剪切设备。精整处理设备对应上游平行布置的控温成型轧制单元,包含高速上钢装置、冷床及相应定尺剪、检查打捆收集设备。该工艺及设备既可以实现大规模高产量连续浇筑,无头轧制及直接轧制,又可以保证产品质量稳定、工序流程顺畅。与此同时,整体设备简单可靠,在占地等方面投资都较节约。(The invention belongs to the technical field of metallurgy, and relates to a production line process device for headless rolled bars, which comprises a steelmaking continuous casting unit, an intermediate rolling unit, a temperature control forming rolling unit and a finished product finishing unit which are sequentially arranged; the steelmaking continuous casting unit comprises a set of casting platform and a multi-path continuous casting guide mechanism. The middle rolling unit comprises a first continuous rolling unit, a temperature control device and first shearing equipment which are sequentially arranged. The temperature control forming rolling unit comprises a second continuous rolling unit, a front temperature control device, a rear temperature control device and second shearing equipment. The finishing treatment equipment corresponds to the temperature control forming rolling unit which is arranged in parallel at the upstream and comprises a high-speed steel feeding device, a cooling bed and corresponding sizing shear, inspection bundling and collecting equipment. The process and the equipment can realize large-scale high-yield continuous casting, endless rolling and direct rolling, and can ensure stable product quality and smooth process flow. Meanwhile, the whole equipment is simple and reliable, and the investment in the aspects of land occupation and the like is saved.)

1. A production line process equipment for endless rolling bars is characterized in that: comprises a steelmaking continuous casting unit, an intermediate rolling unit, a temperature control molding rolling unit and a finished product finishing unit which are arranged in sequence; the steelmaking continuous casting unit comprises a set of casting platform and a multi-path continuous casting guide mechanism.

2. The process plant of the endless rolled bar production line as claimed in claim 1, characterized in that: the middle rolling unit comprises a first continuous rolling unit, a temperature control device and first shearing equipment which are sequentially arranged; the middle rolling units are at least two groups and are symmetrically arranged, and are respectively arranged corresponding to the continuous casting guide mechanisms, and the arrangement number of the middle rolling units is matched with that of the continuous casting guide mechanisms.

3. A process plant for the endless rolled bar production line according to claim 2, characterized in that: the number of rolling mills of the first continuous rolling mill group is 2-10, the number of temperature control devices is 0-10, and the number of first shearing equipment is 0-10.

4. The process plant of the endless rolled bar production line as claimed in claim 1, characterized in that: the temperature control forming rolling unit comprises 1 set of a second continuous rolling unit, a front temperature control device, a rear temperature control device and second shearing equipment, wherein the front temperature control device, the rear temperature control device and the second shearing equipment are arranged on the second continuous rolling unit; the temperature control forming rolling units are at least two groups and are symmetrically arranged, the temperature control forming rolling units are respectively arranged corresponding to the middle rolling units, and the arrangement number of the temperature control forming rolling units is matched with that of the middle rolling units.

5. The process equipment of the endless rolled bar production line as set forth in claim 4, characterized in that: the number of rolling mills of the second continuous rolling mill group is 2-10; the number of the front temperature control devices is 0-10; the number of the second shearing equipment is 0-10; the number of the rear temperature control devices is 0-10.

6. The process plant of the endless rolled bar production line as claimed in claim 1, characterized in that: the finished product finishing unit comprises 1 set of finishing equipment, is arranged opposite to the temperature control forming rolling unit, and comprises at least two sets of high-speed steel feeding devices, a set of cooling bed and sizing shear, and a bundle collecting device for inspection.

7. The process plant of the endless rolled bar production line as claimed in claim 1, characterized in that: and clamping rollers and loops for conveying materials are arranged among and/or in the steelmaking continuous casting unit, the intermediate rolling unit, the temperature control forming rolling unit and the finished product finishing processing unit.

8. The process plant of the endless rolled bar production line as claimed in claim 1, characterized in that: the area of the cross section of the continuous casting blank is 19000m 2-60000 m2, and the drawing speed is 2 m/min-10 m/min.

Technical Field

The invention belongs to the technical field of metallurgy, and relates to a production line process device for headless rolled bars.

Background

The steel production needs to consume a large amount of resources and energy, and has great influence on the environment. And the steel production scale is large, and higher requirements are provided for the production energy consumption of the process route. How to further reduce the production energy consumption is a continuous pursuit goal of the steel industry in the future. The continuous casting billet produced from the steelmaking continuous casting process directly enters the steel rolling process without heating, and is the most economical production mode which saves production energy consumption. Therefore, a great deal of research and improvement is carried out at home and abroad.

1) In a production line, 1 single-flow square billet continuous casting machine directly corresponds to 1 rolling line. The continuous single-flow square blank produced by continuous casting directly enters 1 rolling line for production without cutting or heating furnace. The capacity of a single production line is small in the mode, the actual yield is only 30 ten thousand t/year, the maximum theoretical design capacity is less than 70 ten thousand t/year, the yield is only suitable for the consumption markets with small range, small radius and small using amount, and the product competitiveness of the small-yield production line is not high in the huge consumption market of China.

2) And in the production line, 1 double-flow square billet continuous casting machine directly corresponds to 2 rolling lines. The continuous double-flow square blank produced by continuous casting directly enters 2 rolling lines for production without cutting or heating furnace. The method solves the problem of small capacity through 2 rolling lines, is suitable for the huge consumer market in China, but has the following defects:

(1) under the condition that the production capacity of 2 rolling lines is equivalent to that of 1 conventional rolling line, 2 complete sets of equipment (including rolling mills and finishing) are required, and the equipment investment is large.

(2) The 2 rolling lines occupy large area, and the equipment and civil engineering investment is large.

(3) The independent 2-strip fixed-length finishing process is used for directly shearing the rolled piece into fixed length without a multiple length procedure. The process is suitable for a small-yield production line, but has the defects of stable product quality, smooth process flow and the like for a large-scale high-yield production line.

Disclosure of Invention

In view of the above, the present invention aims to provide a production line process equipment for endless rolled bars, which can not only realize large-scale high-yield continuous casting, endless rolling and direct rolling, but also ensure stable product quality and smooth process flow. Meanwhile, the whole equipment is simple and reliable, and the investment in the aspects of land occupation and the like is saved.

In order to achieve the purpose, the invention provides the following technical scheme:

a production line process device for headless rolled bars comprises a steelmaking continuous casting unit, an intermediate rolling unit, a temperature control forming rolling unit and a finished product finishing unit which are sequentially arranged; the steelmaking continuous casting unit comprises a set of casting platform and a multi-path continuous casting guide mechanism.

Optionally, the intermediate rolling unit comprises a first continuous rolling mill group, a temperature control device and a first shearing device which are sequentially arranged; the middle rolling units are at least two groups and are symmetrically arranged, and are respectively arranged corresponding to the continuous casting guide mechanisms, and the arrangement number of the middle rolling units is matched with that of the continuous casting guide mechanisms.

Optionally, the number of rolling mills of the first continuous rolling mill group is 2-10, the number of temperature control devices is 0-10, and the number of first shearing devices is 0-10.

Optionally, the temperature-controlled forming rolling unit comprises 1 set of a second continuous rolling mill group, a front temperature control device, a rear temperature control device and second shearing equipment, wherein the front temperature control device, the rear temperature control device and the second shearing equipment are arranged on the second continuous rolling mill group; the temperature control forming rolling units are at least two groups and are symmetrically arranged, the temperature control forming rolling units are respectively arranged corresponding to the middle rolling units, and the arrangement number of the temperature control forming rolling units is matched with that of the middle rolling units.

Optionally, the number of rolling mills of the second continuous rolling mill group is 2-10; the number of the front temperature control devices is 0-10; the number of the second shearing equipment is 0-10; the number of the rear temperature control devices is 0-10.

Optionally, the finished product finishing unit comprises 1 set of finishing equipment, is arranged opposite to the temperature control forming rolling unit, and comprises at least two sets of high-speed steel feeding devices, a set of cooling bed, a set of sizing shear, and a set of checking bundling and collecting equipment.

Optionally, clamping rollers and loops for conveying materials are arranged between and/or in the steelmaking continuous casting unit, the intermediate rolling unit, the temperature control forming rolling unit and the finished product finishing processing unit.

Optionally, the cross-sectional area of the continuous casting blank is 19000m 2-60000 m2, and the drawing speed is 2 m/min-10 m/min.

The invention has the beneficial effects that:

1) large-scale low-cost endless rolling direct rolling production can be realized;

2)2, performing high-speed continuous casting corresponding to 1 rolling line, performing multi-length shearing, and entering 1 set of finishing system for subsequent treatment to ensure stable product quality and smooth process flow;

3)2, the high-speed continuous casting of the flow corresponds to 1 rolling line, and the investment of the whole equipment, the civil engineering land occupation and the like is saved.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.

Drawings

For the purposes of promoting a better understanding of the objects, aspects and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic layout of the present invention;

FIG. 2 shows a steelmaking continuous casting unit, an intermediate rolling unit, and a temperature controlled profile rolling unit according to an embodiment of the present invention;

fig. 3 is a finishing unit according to an embodiment of the present invention.

Detailed Description

The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention in a schematic way, and the features in the following embodiments and examples may be combined with each other without conflict.

Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in the drawings in which there is no intention to limit the invention thereto; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not an indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes, and are not to be construed as limiting the present invention, and the specific meaning of the terms may be understood by those skilled in the art according to specific situations.

Referring to fig. 1-3, the reference numbers in the figures refer to the following elements: the device comprises a steelmaking continuous casting unit 1, an intermediate rolling unit 2, a first intermediate rolling unit 2.1, a second intermediate rolling unit 2.2, a third intermediate rolling unit 2.3, a temperature control forming rolling unit 3, a finished product finishing processing unit 4, a pouring platform 5, a continuous casting guide mechanism 6, a first continuous rolling unit 7, a temperature control device 8, first shearing equipment 9, a front temperature control device 10, second shearing equipment 11, a second continuous rolling unit 12, a rear temperature control device 13, finishing processing equipment 14, flying shears 15, a double high-speed steel feeding device 16, bar finishing 17 and a cooling bed 18.

A production line process device for headless rolled bars comprises a steelmaking continuous casting unit 1, an intermediate rolling unit 2, a temperature control forming rolling unit 3 and a finished product finishing unit 4 which are sequentially arranged; the steelmaking continuous casting unit 1 comprises a set of casting platform 5 and a multi-path continuous casting guide mechanism 6.

Optionally, the intermediate rolling unit 2 comprises a first continuous rolling mill train 7, a temperature control device 8 and a first shearing device 9 arranged in sequence; the middle rolling units 2 are at least two groups and are symmetrically arranged, and are respectively arranged corresponding to the continuous casting guide mechanisms 6, and the arrangement number of the middle rolling units is matched with that of the continuous casting guide mechanisms 6; the number of rolling mills of the first continuous rolling mill group 7 is 2-10, the number of temperature control devices 8 is 0-10, and the number of first shearing devices 9 is 0-10; the temperature control forming rolling unit 3 comprises 1 set of a second continuous rolling unit 12, a front temperature control device 10, a rear temperature control device 13 and second shearing equipment 11, wherein the front temperature control device 10, the rear temperature control device 13 and the second shearing equipment are arranged on the second continuous rolling unit 12; the temperature control forming rolling units 3 are at least two groups and are symmetrically arranged, and are respectively arranged corresponding to the middle rolling units 2, and the arrangement number of the temperature control forming rolling units is matched with that of the middle rolling units 2; the number of rolling mills of the second continuous rolling mill group 12 is 2-10; the number of the front temperature control devices 10 is 0-10; the number of the second shearing devices 11 is 0-10; the number of the rear temperature control devices 13 is 0-10.

Optionally, the finished product finishing unit 4 comprises 1 set of finishing equipment 14, is arranged opposite to the temperature-controlled forming rolling unit 3, and comprises at least two sets of high-speed steel feeding devices, a set of cooling bed 18, a set of shear, a checking and bundling collection device; clamping rollers and loops for conveying materials are arranged among and/or in the steelmaking continuous casting unit 1, the intermediate rolling unit 2, the temperature control forming rolling unit 3 and the finished product finishing processing unit 4; the area of the cross section of the continuous casting blank is 19000m²～60000m²The pulling speed is 2m/min to 10 m/min.

One embodiment of the invention is as follows:

a steelmaking continuous casting unit 1 is arranged, and comprises a set of casting platform 5 and two continuous casting guide mechanisms 6, 6 pairs (3 groups) of intermediate rolling units are arranged, and the first intermediate rolling unit 2.1, the second intermediate rolling unit 2.2 and the third intermediate rolling unit 2.3 are arranged. Taking 1 group as an example, the first intermediate rolling unit 2.1 comprises a set of first continuous rolling mill train 7 and a set of flying shears 15 (first shearing device 9) arranged in succession, the first continuous rolling mill train having a number of mills of 6.

And then two temperature control forming rolling units 3 are arranged, correspond to the upstream intermediate rolling unit 1, and are respectively arranged in parallel in 2 groups, and each group has the same configuration and is 1 unit. Taking 1 set as an example, the system comprises 1 set of front temperature control device 10, 1 set of flying shears (second shearing equipment 11), 1 set of second continuous rolling mill group 12 and 1 set of rear temperature control device 13. The number of rolling mills of the second continuous rolling train was 4.

Finally, 1 finished product finishing unit 4 is provided, which comprises 1 set of finishing equipment. The finishing treatment equipment comprises 2 sets of high-speed steel feeding devices 16, 1 set of cooling bed 18, bar finishing 17 and corresponding sizing shears, inspection bundling and collecting equipment.

The process steps of the embodiment are as follows:

1 continuous casting platform 5 produces a 2-stream 180mm x 180mm size billet delivered with a cross-sectional area of 32400m 2. The steel drawing speed is 6m/min, the surface temperature of the blank is 950 ℃, and the blank is sent to a steel rolling process.

The 2-flow billets enter 3 groups of middle rolling units 2 respectively, are deformed into 2 paths of phi 19mm through 18 rolling passes in total, the rolling speed is 12.3m/s, and the rolling temperature is about 900 ℃. According to production requirements, rolled pieces can be sheared after every 6 rolling mills.

2 paths of phi 19mm produced by the middle rolling unit 2 continue to enter the 1 group of temperature-controlled forming rolling units 3 respectively. At this time, the temperature before rolling was controlled to 780 ℃, the steel sheet was deformed into 2 passes of phi 12mm by 4 rolling mills, and the rolling speed was 30 m/s. The temperature after the final rolling was controlled to 700 ℃.

And finally, 2 paths of finished rolled pieces with the diameter of 12mm enter a finished product finishing unit for treatment 4. The 2-path finished rolled pieces are segmented by utilizing 2 sets of high-speed steel feeding devices 16 (comprising high-speed flying shears, pinch rolls, brakes, rotating hubs and the like) in multiple scales and fed to the same cooling bed 18 system. And (4) outputting the rolled pieces which are fully cooled by the cooling bed in rows, cutting to length and collecting.

Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.