CN203862668U - Production line for slitting rolling production of fine-grain high-strength steel bars - Google Patents
Production line for slitting rolling production of fine-grain high-strength steel bars Download PDFInfo
- Publication number
- CN203862668U CN203862668U CN201420066657.3U CN201420066657U CN203862668U CN 203862668 U CN203862668 U CN 203862668U CN 201420066657 U CN201420066657 U CN 201420066657U CN 203862668 U CN203862668 U CN 203862668U
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- Prior art keywords
- rolling
- rolling unit
- temperature control
- control water
- water cooling
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- 238000005096 rolling process Methods 0.000 title claims abstract description 75
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 24
- 229910000831 Steel Inorganic materials 0.000 title abstract description 7
- 239000010959 steel Substances 0.000 title abstract description 7
- 238000001816 cooling Methods 0.000 claims abstract description 43
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 25
- 230000003014 reinforcing effect Effects 0.000 claims description 17
- 238000007493 shaping process Methods 0.000 claims description 17
- 230000008901 benefit Effects 0.000 abstract description 2
- 230000015572 biosynthetic process Effects 0.000 abstract 3
- 238000005516 engineering process Methods 0.000 description 14
- 238000005728 strengthening Methods 0.000 description 9
- 238000005520 cutting process Methods 0.000 description 8
- 230000002787 reinforcement Effects 0.000 description 5
- 238000005275 alloying Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 3
- 229910001018 Cast iron Inorganic materials 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910001562 pearlite Inorganic materials 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
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- Metal Rolling (AREA)
Abstract
The utility model discloses a production line for slitting rolling production of fine-grain high-strength steel bars. The production line comprises a rolling unit and a cooling device. The rolling unit comprises a slitting rolling unit and a final formation rolling unit. The cooling device comprises a temperature control water cooling device I and a temperature control water cooling device II, the temperature control water cooling device I is arranged between the outlet end of the slitting rolling unit and the inlet end of the final formation rolling unit, and the temperature control water cooling device II is arranged at the outlet end of the final formation rolling unit. The production line is simple and compact as a whole; not only is the requirement for the high temperature in the slitting rolling process met, but also finished products can be rolled at low temperature and high pressure, and thus while steel bars are produced efficiently, the comprehensive mechanical properties of the steel bars are improved, the production cost is reduced, good economic and social benefits are created, and the application prospect is wide.
Description
Technical field
The utility model belongs to rolled wire or similar small bore Material Field, is specifically related to a kind of production line that utilizes splitting rolling to produce fine grain, high strength reinforcing bar.
Background technology
Along with building trade high speed development, market is to reinforcing bar product, particularly high strength cast iron demand increases day by day.The popularization of high strength cast iron and use have realized the minimizing of steel, have alleviated raw-material production, processing, transport, have reduced the consumption of the various energy, have reduced the pollution of steel and iron industry to environment, obtain each side and pay much attention to.
During reinforcing bar is produced, for enhancing productivity, reduce energy consumption and cost, middle small dimension reinforcing steel adopts splitting rolling mode conventionally, on milling train, utilize special roll pass or other cutting device to be divided into an original blank along the longitudinal profile several single rolled pieces, and then the rolling mill practice of many reinforcing bars of rolling.While adopting slit rolling process, for ensureing the stable operation of cutting hole slot and Cutting guide, reduce accident rate and reduce cutting wearing and tearing, the cutting temperature of rolled piece will will be controlled at more than 900 DEG C conventionally.
Produce high tensile reinforcement and mainly contain 3 kinds of technologies, i.e. immediate quenching technology, micro-alloying technology and refined crystalline strengthening technology:
(1) adopt the reinforcing bar cost of immediate quenching technology low, but have the problems such as weldability is poor, brittle-ductile transition temperature height, forbidden producing at China;
(2) though adopt the features such as the reinforcing bar of micro-alloying technology has stable performance, strength fluctuation scope is little, strain aging sensitivity is low, excellent weldability, but it exists alloying element consumption large, the shortcoming that production cost is high, bring adverse effect to social resources and enterprise development, limited it and further developed;
(3) adopt refined crystalline strengthening technology to produce reinforcing bar, that reinforcing bar deformation temperature is controlled to (750 DEG C～850 DEG C) near A3 phase point temperature, by applying certain deflection, reach the object of crystal grain thinning, then by rapid cooling, inhibiting grain growth, thereby make reinforcing bar obtain very high intensity and toughness, produce owing to adopting this technology not add or only to add a small amount of microalloy element, in improving reinforcement property, reduced production cost low, therefore be rapidly developed.
Owing to adopting splitting rolling mode rolling temperature need be controlled at more than 900 DEG C, and adopt refined crystalline strengthening technology rolling temperature need be controlled between 750 DEG C～850 DEG C, therefore, existing production line of bar, in process equipment layout and process, cannot meet the requirement that slit rolling process and refined crystalline strengthening technology are implemented simultaneously.
How in reinforcing bar is produced, merge slit rolling process and refined crystalline strengthening technology, obtain low cost, high performance high tensile reinforcement taking fine grain ferrite and pearlite as matrix, ensure production line output requirement simultaneously, become the problem demanding prompt solution that each large steel is looked forward to.
Summary of the invention
In view of this, the purpose of this utility model is to provide a kind of production line that can simultaneously adopt splitting rolling mode and refined crystalline strengthening technology to produce high tensile reinforcement.
For achieving the above object, the utility model provides a kind of splitting rolling to produce the production line of fine grain, high strength reinforcing bar, comprise rolling unit and cooling device, described rolling unit comprises splitting rolling unit and final shaping unit rolling unit, described cooling device comprises temperature control water cooling plant I and temperature control water cooling plant II, described temperature control water cooling plant I is arranged between splitting rolling machine set outlet end and final shaping unit rolling unit arrival end, and described temperature control water cooling plant II is arranged on final shaping unit rolling unit port of export place.
Further, in described temperature control water cooling plant I and temperature control water cooling plant II, be provided with side by side the cooling transfer passage of multiple rolled pieces.
Further, described splitting rolling unit and final shaping unit rolling unit form by 2～10 stiff mills.
Further, the arrival end place of described splitting rolling unit and final shaping unit rolling unit is provided with flying shear.
The beneficial effects of the utility model are: integral arrangement is simply compact, combine the advantage of slit rolling process and refined crystalline strengthening technology, eliminate the contradiction of implementing temperature between the two, splitting rolling when high temperature, the mode combining by heavy reduction rolling and cooling down realizes the refined crystalline strengthening of rolled piece, neither destroy the Beneficial Effect of high temperature to splitting rolling process, can force again the rolled piece after rolling to undergo phase transition under temperature and large deformation accumulation, enhancing productivity, intensity and the toughness of rolled piece when reducing production costs, are improved, strengthen the competitiveness of splitting rolling reinforcing bar product, have a extensive future.
Brief description of the drawings
In order to make the purpose of this utility model, technical scheme and beneficial effect clearer, the utility model provides following accompanying drawing to describe:
Fig. 1 is production line schematic diagram of the present utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail.
As shown in the figure, splitting rolling described in the present embodiment is produced the production line of high tensile reinforcement, comprise splitting rolling unit 2, temperature control water cooling plant I 3, final shaping unit rolling unit 4 and the temperature control water cooling plant II 5 of rolled piece after cutting being carried out to refined crystalline strengthening, described splitting rolling unit 2, temperature control water cooling plant I 3, final shaping unit rolling unit 4 and temperature control water cooling plant II 5 are successively set on rolling centerline, upstream equipment 1 carries the single rolled piece of coming to enter in splitting rolling unit 2, splitting rolling unit 2 is by single rolled piece splitting rolling Cheng Duogen rolled piece, each rolled piece enter side by side in temperature control water cooling plant I 3, carry out cooling, rolled piece temperature is cooled near phase transition temperature, cooled rolled piece enters in final shaping unit rolling unit 4 and carries out heavy reduction rolling, through the rolled piece of final shaping unit rolling enter again in temperature control water cooling plant II 5, carry out cooling, realize rapid cooling after phase transformation, reach the object of inhibiting grain growth, finally, rolled piece is exported from temperature control water cooling plant II 5, send into upstream device 6 and carry out finishing and collecting.
In the present embodiment, in described temperature control water cooling plant I 3 and temperature control water cooling plant II 5, be provided with side by side six cooling transfer passages of rolled piece, rolled piece after cutting respectively enters in a cooling transfer passage, conveniently separately every rolled piece is carried out cooling fast, cooling transfer passage is delivered to rolled piece next station in cooling, and this process can realize internal and external temperature and the phase transformation homogenising of each rolled piece.
In the present embodiment, rearrange splitting rolling unit 2 by six stiff mills along rolling direction, carry the single rolled piece of coming to carry out splitting rolling to upstream equipment 1 successively, two stiff mills rearrange final shaping unit rolling unit 4 along rolling direction, and cutting, cooled rolled piece are carried out to final shaping unit rolling.
In the present embodiment, described splitting rolling unit 2 is equipped with flying shear with the arrival end place of final shaping unit rolling unit 4, can shear the head end of rolled piece or tail end, is convenient to rolled piece and imports in milling train.
Finally explanation is, above preferred embodiment is only unrestricted in order to the technical solution of the utility model to be described, although the utility model is described in detail by above preferred embodiment, but those skilled in the art are to be understood that, can make various changes to it in the form and details, and not depart from the utility model claims limited range.
Claims (4)
1. the production line of a splitting rolling production fine grain, high strength reinforcing bar, comprise rolling unit and cooling device, it is characterized in that: described rolling unit comprises splitting rolling unit and final shaping unit rolling unit, described cooling device comprises temperature control water cooling plant I and temperature control water cooling plant II, described temperature control water cooling plant I is arranged between splitting rolling machine set outlet end and final shaping unit rolling unit arrival end, and described temperature control water cooling plant II is arranged on final shaping unit rolling unit port of export place.
2. splitting rolling according to claim 1 is produced the production line of fine grain, high strength reinforcing bar, it is characterized in that: in described temperature control water cooling plant I and temperature control water cooling plant II, be provided with side by side the cooling transfer passage of multiple rolled pieces.
3. splitting rolling according to claim 1 is produced the production line of fine grain, high strength reinforcing bar, it is characterized in that: described splitting rolling unit and final shaping unit rolling unit form by 2～10 stiff mills.
4. splitting rolling according to claim 1 is produced the production line of fine grain, high strength reinforcing bar, it is characterized in that: the arrival end place of described splitting rolling unit and final shaping unit rolling unit is equipped with flying shear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420066657.3U CN203862668U (en) | 2014-02-14 | 2014-02-14 | Production line for slitting rolling production of fine-grain high-strength steel bars |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420066657.3U CN203862668U (en) | 2014-02-14 | 2014-02-14 | Production line for slitting rolling production of fine-grain high-strength steel bars |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203862668U true CN203862668U (en) | 2014-10-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420066657.3U Expired - Lifetime CN203862668U (en) | 2014-02-14 | 2014-02-14 | Production line for slitting rolling production of fine-grain high-strength steel bars |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203862668U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103801557A (en) * | 2014-02-14 | 2014-05-21 | 中冶赛迪工程技术股份有限公司 | Process layout and process method for producing fine-grain high-strength steel bar in segmenting and rolling mode |
| CN110947759A (en) * | 2019-12-20 | 2020-04-03 | 中冶南方工程技术有限公司 | Deformed steel bar rolling production line and production method thereof |
-
2014
- 2014-02-14 CN CN201420066657.3U patent/CN203862668U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103801557A (en) * | 2014-02-14 | 2014-05-21 | 中冶赛迪工程技术股份有限公司 | Process layout and process method for producing fine-grain high-strength steel bar in segmenting and rolling mode |
| CN110947759A (en) * | 2019-12-20 | 2020-04-03 | 中冶南方工程技术有限公司 | Deformed steel bar rolling production line and production method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141008 |