CN113102542A - Production process of cold-rolled ribbed steel bar based on CRB600H - Google Patents
Production process of cold-rolled ribbed steel bar based on CRB600H Download PDFInfo
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- CN113102542A CN113102542A CN202110274659.6A CN202110274659A CN113102542A CN 113102542 A CN113102542 A CN 113102542A CN 202110274659 A CN202110274659 A CN 202110274659A CN 113102542 A CN113102542 A CN 113102542A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/04—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of bars or wire
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- 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
- B21B1/16—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 wire rods, bars, merchant bars, rounds wire or material of like small cross-section
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F1/00—Bending wire other than coiling; Straightening wire
- B21F1/02—Straightening
- B21F1/026—Straightening and cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F11/00—Cutting wire
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/06—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires
- C21D8/065—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires of ferrous alloys
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/06—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires
- C21D8/08—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires for concrete reinforcement
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
The invention belongs to the field of automatic production of cold-rolled ribbed steel bars, and provides a production process of cold-rolled ribbed steel bars based on CRB600H, which comprises the following steps: automatically feeding the base material; initially rolling to form a first ribbed steel bar; controlling the wire outlet speed of the first ribbed steel bar; finish rolling to form a second ribbed steel bar; straightening the second ribbed steel bar; tempering the straightened second ribbed steel bar; the method comprises the following steps of (1) sizing according to the current production requirement, and setting the production length of the ribbed steel bar; judging according to the current production requirement: if the straight reinforcing steel bar is produced, shearing the straight reinforcing steel bar into straight reinforcing steel bar sections with preset lengths, turning the straight reinforcing steel bar sections, bundling, and warehousing finished products; and if the coiled steel bars are produced, coiling the straight steel bars, shearing after the coiled length of the coiled steel bars is reached, and warehousing finished products, wherein the production length of the ribbed steel bars is more than or equal to the coiled length of the coiled steel bars. The automatic production device can finish the automatic production of various types of ribbed steel bars according to production requirements.
Description
Technical Field
The invention relates to the field of automatic production of cold-rolled ribbed steel bars, in particular to a production process of cold-rolled ribbed steel bars based on CRB 600H.
Background
At present, with the rapid development of the real estate industry, more and more building materials become short of demand, and especially ribbed steel bars are more and more applied to various building scenes such as houses, bridges and the like due to the strong stability of the ribbed steel bars.
The standard value of the tensile strength of the CRB600H high-ductility cold-rolled ribbed steel bar is 600 Mpa; the yield strength standard value is 520 MPa; tensile strength design value 415 MPA; the total elongation (uniform elongation) under the maximum force is not less than 5 percent. The high ductility cold rolled ribbed bar is available under the designation CRB 600H. C. R, B are English letters of cold rolling, ribbed and reinforcing steel bars respectively, and H represents high ductility. The high-ductility cold-rolled ribbed steel bar has good machinability and low price, and can be used as stressed steel bar and distributed steel bar of plate members and stirrup-constructed steel bar in beams and columns, thus not only reducing the consumption of steel bars, but also reducing the manufacturing cost, and having very obvious social and economic benefits.
The existing production method of the cold-rolled ribbed steel bar is more traditional, generally only adopts simple single rolling, and all production links still need to be participated by people, so that the production efficiency is low, and accidents can be caused by disordered production procedures of a production workshop. Moreover, in order to meet the requirement on the stability of buildings, the performance requirements of various buildings using ribbed steel bars on various raw materials are more and more refined, and obviously, the existing production method of ribbed steel bars cannot meet the more and more refined product requirements.
Disclosure of Invention
The invention aims to provide a production process of a cold-rolled ribbed steel bar based on CRB600H, which can ensure the basic performance of CRB600H and realize the automatic production of the ribbed steel bar.
The invention solves the technical problem, and adopts the technical scheme that:
the production process of the cold-rolled ribbed steel bar based on the CRB600H comprises the following steps:
automatically feeding the base material;
initially rolling to form a first ribbed steel bar;
controlling the wire outlet speed of the first ribbed steel bar;
finish rolling to form a second ribbed steel bar;
straightening the second ribbed steel bar;
tempering the straightened second ribbed steel bar;
the method comprises the following steps of (1) sizing according to the current production requirement, and setting the production length of the ribbed steel bar;
judging according to the current production requirement: if the straight reinforcing steel bar is produced, shearing the straight reinforcing steel bar into straight reinforcing steel bar sections with preset lengths, turning the straight reinforcing steel bar sections, bundling, and warehousing finished products; and if the coiled steel bars are produced, coiling the straight steel bars, shearing after the coiled length of the coiled steel bars is reached, and warehousing finished products, wherein the production length of the ribbed steel bars is more than or equal to the coiled length of the coiled steel bars.
Further, the parent metal is automatically fed by using a material cage.
Further, the material cage at least comprises two rotatable material swinging devices, and the rotatable material swinging devices are used for placing parent materials.
Furthermore, the tail end of the base metal on one rotatable material placing device is butt-welded to the initial end of the base metal on the other rotatable material placing device, in the production process of ribbed steel bars, when the base metal on one rotatable material placing device is used up, a new base metal is placed on the rotatable material placing device, and the initial end of the new base metal is butt-welded with the tail end of the base metal on the other rotatable material placing device.
Further, a horizontal rolling mode is adopted for initial rolling.
Furthermore, a tension speed switch is adopted to control the wire outlet speed of the first ribbed steel bar.
Further, the outlet speed of the first ribbed steel bar is synchronous with the finish rolling speed.
Further, the production length of the ribbed steel bar is set through an encoder according to the current production requirement sizing.
Further, the production length of the ribbed steel bar is a multiple of the coil length of the coil steel bar.
The production process has the beneficial effects that through the production process of the cold-rolled ribbed steel bar based on the CRB600H, firstly, the base material is automatically fed, so that manual operation is avoided; secondly, initially rolling to form a first ribbed steel bar, and initially rolling various types of ribbed steel bars; then, controlling the wire outlet speed of the first ribbed steel bar to accelerate the production efficiency; then, finish rolling is carried out to form a second ribbed steel bar, so that the refinement of a ribbed steel bar product is realized, and the use requirement of the product is met; then, straightening the second ribbed steel bar, wherein the finished ribbed steel bar is bent under the general condition and is not beneficial to the subsequent production process, so that the straightening process can save a large amount of time for the subsequent process; then, tempering the straightened second ribbed steel bar to further improve the toughness of the ribbed steel bar; then, sizing according to the current production requirement, and setting the production length of the ribbed steel bar; and finally, judging according to the current production requirement: if the straight reinforcing steel bar is produced, shearing the straight reinforcing steel bar into straight reinforcing steel bar sections with preset lengths, turning the straight reinforcing steel bar sections, bundling, and warehousing finished products; and if the coiled steel bars are produced, coiling the straight steel bars, shearing after the coiled length of the coiled steel bars is reached, and warehousing finished products, wherein the production length of the ribbed steel bars is more than or equal to the coiled length of the coiled steel bars.
Finally, the full-automatic production of the CRB600H cold-rolled ribbed steel bar is realized, the production flow efficiency is high, the performance of the produced ribbed steel bar is good, and the wider and wider application requirements can be met.
Drawings
Fig. 1 is a flow chart of the production process of the cold-rolled ribbed steel bar based on CRB 600H.
Detailed Description
The technical scheme of the invention is described in detail in the following with reference to the accompanying drawings.
The invention provides a production process of a cold-rolled ribbed steel bar based on CRB600H, which has a flow chart shown in figure 1, wherein the process comprises the following steps:
s1, automatically feeding the base material; in the step, the conventional method is that a mother material is lifted to a specified position by utilizing a lifting device such as an electric hoist manually, and the mother material is placed at a corresponding position by the assistance of an operator, and then the mother material is put into a line to enter a rolling stage; however, the traditional method is obviously low in efficiency and high in labor cost, so that the masterbatch is automatically fed in the invention, related programs can be written in the field control equipment, and the lifting device is automatically controlled to complete lifting and feeding of the masterbatch according to the type, weight, original position and target position of the masterbatch to be lifted, so that the process is completely free from human participation, the efficiency is high, the time of the production process can be saved, and the production efficiency is greatly improved.
S2, initially rolling to form a first ribbed steel bar; here, the current ribbed steel bar needs to be rolled finely due to higher and higher performance requirements, and the current ribbed steel bar only needs to be rolled once, so that the requirement for fine product cannot be met.
S3, controlling the wire outlet speed of the first ribbed steel bar; in the step, due to the adoption of the primary rolling process of the step S2, although the requirement on product refinement can be improved, the wire outlet speed of the product is also improved, but the wire outlet speed of the existing product completely depends on the rolling speed, and the wire outlet speed is hardly improved greatly on the premise of ensuring the requirement on product refinement.
S4, finish rolling to form a second ribbed steel bar; because the traditional process of only adopting one-time rolling can not meet the requirement for realizing the refinement of the ribbed steel bar product, the invention also adds a finish rolling procedure after the initial rolling, thereby producing a more refined ribbed steel bar product.
S5, straightening the second ribbed steel bar; in general, the ribbed steel bar after finish rolling is bent, which is not beneficial to subsequent production processes, so that the straightening process can save a large amount of time for the subsequent processes, and the failure rate of the subsequent processes caused by bending can be reduced.
S6, tempering the straightened second ribbed steel bar; in the actual production process, the toughness of the ribbed steel bar product after finish rolling is too rigid, and the use requirement cannot be completely met, so that in order to improve the toughness of the ribbed steel bar, the second ribbed steel bar after straightening is subjected to tempering treatment in the process, and the toughness of the ribbed steel bar is further improved.
S7, sizing according to the current production requirement, and setting the production length of the ribbed steel bar; in this step, can be according to the production length of production demand automatic adjustment to the ribbed reinforcing bar of waiting to produce, when reaching preset production length, the shearing process in the subsequent handling will start, and the automatic cutting of accomplishing need not artificial mark in advance on the masterbatch, also need not to cut according to the mark of doing, promotes the efficiency of taking effect greatly, and this step is the computer according to algorithm automatic completion completely, can the length error of greatly reduced product.
S8, judging according to the current production requirement: if the straight reinforcing steel bar is produced, shearing the straight reinforcing steel bar into straight reinforcing steel bar sections with preset lengths, turning the straight reinforcing steel bar sections, bundling, and warehousing finished products; and if the coiled steel bars are produced, coiling the straight steel bars, shearing after the coiled length of the coiled steel bars is reached, and warehousing finished products, wherein the production length of the ribbed steel bars is more than or equal to the coiled length of the coiled steel bars.
It should be noted that even though the invention can realize full-automatic production, the invention still can not avoid the timing equipment maintenance and check of personnel, and as long as the equipment is operated, the invention has potential safety hazards due to various reasons, therefore, the invention can automatically feed the base material by using the material cage, and the material cage can cover the base material, thereby greatly improving the safety of field production.
Generally, the material cage at least comprises two rotatable material placing devices, and the rotatable material placing devices are used for placing parent materials; and in the production process of ribbed steel bars, when the base metal on one rotatable material swinging device is used up, placing a new base metal on the rotatable material swinging device, and butt-welding the starting end of the new base metal with the tail end of the base metal on the other rotatable material swinging device.
It should be noted that, the existing rolling process is to roll the ribbed steel bar by using the vertical roller, and the pressure bearing performance of the product is stronger in the rolling mode, so that the required pressure for rolling is higher, which not only wastes electric power and equipment cost, but also affects the parameter index of the product.
In addition, in practical application, the tensioning speed switch can be adopted to control the wire outlet speed of the first ribbed steel bar, and the wire outlet speed of the product can be controlled in other modes.
In order to meet the production requirements, normally, no product backlog is required, and therefore, the outlet speed of the first ribbed bar should be synchronized with the finish rolling speed.
It should be noted that, when the current production requirement is sized, the production length of the ribbed steel bar can be set by adopting an encoder automatic counting mode, and the automatic counting mode does not need human participation at all, so that the production efficiency of the product can be improved.
In addition, for the case that the required finished product is a disc-shaped ribbed steel bar, generally, the following can be set: the production length of the ribbed steel bar is multiple of the coil length of the coil steel bar, so that unnecessary waste of base metal can be avoided, and fine production can be realized.
Claims (9)
1. The production process of the cold-rolled ribbed steel bar based on the CRB600H is characterized by comprising the following steps:
automatically feeding the base material;
initially rolling to form a first ribbed steel bar;
controlling the wire outlet speed of the first ribbed steel bar;
finish rolling to form a second ribbed steel bar;
straightening the second ribbed steel bar;
tempering the straightened second ribbed steel bar;
the method comprises the following steps of (1) sizing according to the current production requirement, and setting the production length of the ribbed steel bar;
judging according to the current production requirement: if the straight reinforcing steel bar is produced, shearing the straight reinforcing steel bar into straight reinforcing steel bar sections with preset lengths, turning the straight reinforcing steel bar sections, bundling, and warehousing finished products; and if the coiled steel bars are produced, coiling the straight steel bars, shearing after the coiled length of the coiled steel bars is reached, and warehousing finished products, wherein the production length of the ribbed steel bars is more than or equal to the coiled length of the coiled steel bars.
2. The CRB 600H-based cold-rolled ribbed steel bar production process according to claim 1, wherein the parent material is automatically fed by using a cage.
3. The CRB 600H-based cold-rolled ribbed steel bar production process according to claim 2, wherein the cage comprises at least two rotatable material swinging devices for placing parent materials.
4. The CRB 600H-based cold-rolled ribbed steel bar production process according to claim 3, wherein the tail end of the base material of one rotatable pendulum device is butt-welded to the beginning of the base material of the other rotatable pendulum device, and when the base material of one rotatable pendulum device is used up, a new base material is placed on the rotatable pendulum device and the beginning of the new base material is butt-welded to the tail end of the base material of the other rotatable pendulum device during the ribbed steel bar production process.
5. The CRB 600H-based cold-rolled ribbed steel bar production process according to claim 1, wherein the initial rolling is performed by horizontal rolling.
6. The CRB 600H-based cold-rolled ribbed steel bar production process according to claim 1, wherein a tension speed switch is used to control the wire outlet speed of the first ribbed steel bar.
7. The CRB 600H-based cold-rolled ribbed steel bar production process according to claim 6, wherein the first ribbed steel bar outlet speed is synchronized with the finish rolling speed.
8. The CRB 600H-based cold-rolled ribbed steel bar production process according to claim 1, wherein the production length of the ribbed steel bar is set by an encoder according to the current production requirement.
9. The CRB 600H-based cold-rolled ribbed steel bar production process according to claim 1, wherein the ribbed steel bar has a production length that is a multiple of the coil length of the coil steel bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110274659.6A CN113102542A (en) | 2021-03-15 | 2021-03-15 | Production process of cold-rolled ribbed steel bar based on CRB600H |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110274659.6A CN113102542A (en) | 2021-03-15 | 2021-03-15 | Production process of cold-rolled ribbed steel bar based on CRB600H |
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Citations (13)
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| EP0133801A2 (en) * | 1983-08-04 | 1985-03-06 | Uop Inc. | Finned heat exchanger tubes and method and apparatus for making same |
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| CN104028553A (en) * | 2014-05-30 | 2014-09-10 | 云南钛业股份有限公司 | Method for producing TC4 titanium alloy rods and wires through high-speed continuous mill |
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| US20200086376A1 (en) * | 2016-12-13 | 2020-03-19 | Shanghai Pan-China Fastening System Co., Ltd. | Rolled pipe thread processing method, rolling head, apparatus, module, production line, and product thereof |
| CN112173215A (en) * | 2020-10-29 | 2021-01-05 | 射洪县才伦建材有限责任公司 | Packing device for annular reinforcing steel bars |
| CN112239830A (en) * | 2020-08-31 | 2021-01-19 | 盐城市联鑫钢铁有限公司 | Low-cost high-ductility disc strip for CRB600H and rolling process thereof |
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2021
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| EP0133801A2 (en) * | 1983-08-04 | 1985-03-06 | Uop Inc. | Finned heat exchanger tubes and method and apparatus for making same |
| CN2374287Y (en) * | 1999-04-11 | 2000-04-19 | 施友彬 | Roll mill for reinforced bar with rib |
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Application publication date: 20210713 |
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| RJ01 | Rejection of invention patent application after publication |