WO2015176515A1 - Production technology for screw-thread steel bar with three ribbed sides - Google Patents
Production technology for screw-thread steel bar with three ribbed sides Download PDFInfo
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- WO2015176515A1 WO2015176515A1 PCT/CN2014/092052 CN2014092052W WO2015176515A1 WO 2015176515 A1 WO2015176515 A1 WO 2015176515A1 CN 2014092052 W CN2014092052 W CN 2014092052W WO 2015176515 A1 WO2015176515 A1 WO 2015176515A1
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 40
- 239000010959 steel Substances 0.000 title claims abstract description 40
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 28
- 238000005096 rolling process Methods 0.000 claims abstract description 56
- 238000010008 shearing Methods 0.000 claims abstract description 28
- 238000001816 cooling Methods 0.000 claims abstract description 26
- 238000000034 method Methods 0.000 claims abstract description 12
- 238000004513 sizing Methods 0.000 claims abstract description 9
- 238000002203 pretreatment Methods 0.000 claims description 4
- 239000000498 cooling water Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000007781 pre-processing Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 238000011946 reduction process Methods 0.000 description 2
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- 108010068204 Peptide Elongation Factors Proteins 0.000 description 1
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- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
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- 238000009865 steel metallurgy Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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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
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
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- the invention belongs to the field of steel metallurgy, and in particular relates to a process arrangement of three-side ribbed steel bars.
- the existing reinforced bar is ribbed on both sides in the cross section, while the other two sides are not ribbed.
- the unribbed surface of the steel bar is not tightly bonded to the concrete, and is easily detached after being stressed, and the existing reinforced steel bar has a low strength level, thereby causing safety hazards in the building.
- the object of the present invention is to provide a production process arrangement of three-sided ribbed steel bars, which can mass-produce three-side ribbed rebars, and the surface quality and section size of the new type of rebar produced by the present invention.
- the strength level is greatly improved, and the safety hazard of the steel and concrete falling off caused by the multi-directional external force can be effectively eliminated by its own shape characteristics.
- Production process arrangement of three-side ribbed steel bars including pre-treatment steps, rough rolling units, first shearing equipment, medium rolling mills, second shearing equipment, finishing rolling mills, third shearing equipment , a reduction sizing unit, a fourth shearing device and a post-treatment process, wherein the roughing unit, the medium rolling unit, the finishing rolling unit and the reducing and sizing unit all adopt a three-roll rolling mill, and the last three-rolling mill of the finishing rolling unit
- the surface of the rolling mill is engraved with crescent-shaped ribs that match the shape of the ribs on the three-sided ribbed steel bar. groove;
- a first temperature-controlled cooling device is disposed between the pre-processing step and the roughing unit, and a second temperature-controlled cooling device is disposed between the roughing unit and the first shearing device, and the medium-rolling unit and A third temperature-controlled cooling device is disposed between the second shearing device, and a fourth temperature-controlled cooling device is disposed between the finishing device and the third shearing device, and the reduced-sizing unit and the fourth shearing device are disposed There is a fifth temperature control cooling device between them;
- first to fifth temperature-controlled cooling devices all adopt a controlled cooling water tank
- the three-roll mill has an elongation coefficient per pass of 1.0 to 1.6;
- the elongation coefficient of the last three-roll mill is 1.0 to 1.3.
- the invention has the beneficial effects that the production method of the process arrangement of the invention has a high-strength three-roll mill through a full line, and the rolling capacity is large, and the single-pass large reduction can be realized, and the production of fine-grain steel bars for controlled rolling and controlled cooling is provided;
- a plurality of temperature-controlled water tanks are installed in the whole line, and the rolling parts are subjected to on-line temperature-controlled cooling through a medium such as water and gas, and a reasonable rolling piece temperature window is added to the large reduction process of the rolling mill, so that a new type of threaded steel bar with high strength grade can be realized. Orderly production.
- Figure 1 is a schematic cross-sectional view of a ribbed steel bar on three sides;
- FIG. 2 is a layout diagram of a production process in accordance with a preferred embodiment of the present invention.
- a production process arrangement of a three-sided ribbed threaded steel bar includes a pre-processing step, a rough rolling unit 3, a first shearing device 5, a middle rolling unit 6, and a second shearing device 8 which are sequentially disposed.
- a high-strength three-roll mill is used, and the surface of the last three-roll mill of the finishing mill is engraved with a crescent-shaped rib groove that conforms to the shape of the rib surface of the three-sided ribbed steel bar.
- the pre-treatment process comprises continuous casting blank-blank length-blank blank pile into the warehouse-blank reheating-heating After the furnace is heated, the billet is discharged - high pressure water descaling; the post-treatment process includes cold bed cooling - cold shear (saw) cutting equipment cutting scale - finished bar inspection and collection - baling off the line - storage stacking.
- the rolls of the adjacent rolling mills are respectively arranged in an equilateral triangle and an inverted equilateral triangle.
- a first temperature-controlled cooling device 2 is disposed between the pre-processing step and the roughing unit, and a second temperature-controlled cooling device 4 is disposed between the roughing unit and the first shearing device.
- a third temperature-controlled cooling device 7 is disposed between the middle rolling unit and the second shearing device, and a fourth temperature-controlled cooling device 10 is disposed between the finishing rolling mill and the third shearing device, the reducing diameter
- a fifth temperature-controlled cooling device 13 is disposed between the unit and the fourth shearing device; the first to fifth temperature-controlled cooling devices each adopt a controlled cooling water tank; and the elongation coefficient of each pass of the three-roll rolling mill is 1.0 1.6; To ensure the dimensional accuracy of the final product, the last three-roll mill has an elongation factor of 1.0 to 1.3.
- the ribs on the three sides of the rebar produced in this embodiment are uniformly distributed around the outer surface of the steel bar in the circumferential direction at 120°.
- the rolling speed is faster, the productivity is higher, and the section size accuracy is obtained.
- Higher, more uniform performance, higher strength grade can increase more than 50mPa; higher adhesion with concrete, more than 30% bond strength compared with traditional two-side ribbed steel bars, and steel bars with multi-directional external force Compared to the amount of concrete, the traditional steel bars are smaller, making the building safer.
- the three-roll finishing mill deforms the ribbed reinforced bar and forms the final crescent-shaped ribs.
- the three rolls simultaneously roll-deform the three sections of the rolling section, and the forming effect is better. It has stronger deformation ability and higher dimensional accuracy. It is also suitable for producing fine-grained reinforced bars from the perspective of controlled rolling and controlled cooling.
- the production method of the present embodiment can not only produce the novel three-side ribbed threaded steel bar of the present invention, but also can be used for producing high quality round steel. Similarly, the production method is also applicable to the production of high-speed wire ribbed steel bars and disc bars of similar cross section.
- the production characteristics of this embodiment are as follows: (1) The high-strength three-roll mill is installed in the whole line, the rolling capacity is large, and the single-pass large reduction can be realized, which provides guarantee for the production of fine-grained steel bars by controlled rolling and controlled cooling; (2) full line Set up multiple temperature control water tanks, carry out on-line temperature control and cooling of the rolling stock through medium such as water and gas, and reasonable rolling window temperature window combined with the large reduction process of the rolling mill to realize the orderly production of new high-strength grade reinforced steel bars; 3) The whole line production process and layout are flexible. According to the actual process needs, the rolling mill unit can be appropriately increased or decreased, so that the production investment cost is optimized and the production benefit is maximized.
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Abstract
A production technology for a screw-thread steel bar with three ribbed sides comprises a pretreatment working procedure (1), a roughing rolling unit (3), a first shearing device (5), an intermediate rolling unit (6), a second shearing device (8), a finishing rolling unit (9), a third shearing device (11), a reducing sizing mill unit (12), a fourth shearing device (14) and a post treatment working procedure (15) sequentially, wherein the roughing rolling unit (3), the intermediate rolling unit (6), the finishing rolling unit (9) and the reducing sizing mill unit (12) are all three-roller rolling mills. Crescent-shaped grooves matching the rib portions of the steel bar surface are engraved in the roller faces of the last three-roller rolling mill of the finishing rolling unit (9). According to the production technology, the high-strength three-roller rolling mills are arranged on the whole line to enable a large rolling power, and guarantees are provided for fine grain steel bar production in a controlled rolling and cooling mode under large single-pass pressure; in addition, orderly production of the novel screw-thread steel bar with the high-strength grade can be achieved by arranging temperature control water tanks at multiple positions on the whole line, on-line temperature control cooling the rolled pieces through media such as water and gas, and adopting a reasonable rolled piece temperature window in cooperation with the large-pressure technology of the rolling mills.
Description
本发明属于钢铁冶金领域，具体涉及一种三侧带肋螺纹钢筋的工艺布置。The invention belongs to the field of steel metallurgy, and in particular relates to a process arrangement of three-side ribbed steel bars.
采用二辊轧机轧制出两侧带肋的螺纹钢筋是螺纹钢轧制生产的公知技术。The use of a two-roll mill to roll ribbed steel bars on both sides is a well-known technique for rebar rolling production.
随着国家进步与发展，大规模基础设施及城镇化建设都离不开建筑用螺纹钢筋。2013年螺纹钢筋产量已超过2亿吨，占我国钢材产能的20％。国家主管部门也陆续出台相关政策，在建筑工程中加速淘汰335MPa级钢筋，优先使用400MPa级钢筋，积极推广500MPa级钢筋。With the progress and development of the country, large-scale infrastructure and urbanization construction are inseparable from the construction of rebar. In 2013, the output of threaded steel bars has exceeded 200 million tons, accounting for 20% of China's steel production capacity. The competent national authorities have also issued relevant policies, speeding up the elimination of 335MPa grade steel bars in construction projects, preferentially using 400MPa grade steel bars, and actively promoting 500MPa grade steel bars.
在逐步提高螺纹钢筋强度等级的同时，如何让钢筋与混凝土完全融合也是技术人员必须考虑的问题。首先，钢筋与混凝土有着近似相同的热膨胀系数，相同温度下，钢筋和混凝土之间错动很小；其次，混凝土硬化时，水泥与钢筋表面有良好的粘结，使得任何应力可以有效地在二者之间传递；通常钢筋的表面也被加工成粗糙的、有间隔的波纹状肋条(称为螺纹钢)来进一步提高混凝土与钢筋之间的粘结。While gradually increasing the strength grade of the reinforced bar, how to completely integrate the steel bar with the concrete is also a problem that the technician must consider. First of all, steel and concrete have approximately the same coefficient of thermal expansion. At the same temperature, the displacement between steel and concrete is small. Secondly, when the concrete is hardened, the cement has a good bond with the surface of the steel, so that any stress can be effectively Transfer between the two; usually the surface of the steel bar is also machined into rough, spaced corrugated ribs (called rebar) to further enhance the bond between the concrete and the steel bar.
然而现有螺纹钢筋从断面上看是两侧带肋，而另两面没有带肋。建筑物在受到多方向的外力时，钢筋没带肋的面与混凝土的粘合程度不紧密，受力后易脱落，加上现有螺纹钢筋强度等级较低，进而使得建筑物产生安全隐患。However, the existing reinforced bar is ribbed on both sides in the cross section, while the other two sides are not ribbed. When the building is subjected to external forces in multiple directions, the unribbed surface of the steel bar is not tightly bonded to the concrete, and is easily detached after being stressed, and the existing reinforced steel bar has a low strength level, thereby causing safety hazards in the building.
发明内容Summary of the invention
有鉴于此，本发明的目的是提供一种三侧带肋螺纹钢筋的生产工艺布置，能批量化生产三侧带肋的螺纹钢，并且本发明生产出来的新型螺纹钢在表面质量、断面尺寸、强度等级大大提升的同时，又可通过其自身形状特性有效消除多方向外力带来的钢筋与混凝土脱落的安全隐患。In view of this, the object of the present invention is to provide a production process arrangement of three-sided ribbed steel bars, which can mass-produce three-side ribbed rebars, and the surface quality and section size of the new type of rebar produced by the present invention. At the same time, the strength level is greatly improved, and the safety hazard of the steel and concrete falling off caused by the multi-directional external force can be effectively eliminated by its own shape characteristics.
本发明的目的是通过以下技术方案实现的：The object of the invention is achieved by the following technical solutions:
一种三侧带肋螺纹钢筋的生产工艺布置，包括依次设置的前处理工序、粗轧机组、第一剪切设备、中轧机组、第二剪切设备、精轧机组、第三剪切设备、减定径机组、第四剪切设备和后处理工序，所述粗轧机组、中轧机组、精轧机组和减定径机组均采用三辊轧机，所述精轧机组最后一架三辊轧机的辊面上刻有与三侧带肋钢筋表面肋部形状相吻合的月牙形肋
槽；Production process arrangement of three-side ribbed steel bars, including pre-treatment steps, rough rolling units, first shearing equipment, medium rolling mills, second shearing equipment, finishing rolling mills, third shearing equipment , a reduction sizing unit, a fourth shearing device and a post-treatment process, wherein the roughing unit, the medium rolling unit, the finishing rolling unit and the reducing and sizing unit all adopt a three-roll rolling mill, and the last three-rolling mill of the finishing rolling unit The surface of the rolling mill is engraved with crescent-shaped ribs that match the shape of the ribs on the three-sided ribbed steel bar.
groove;
进一步，所述前处理工序与粗轧机组之间设置有第一控温冷却装置，所述粗轧机组与第一剪切设备之间设置有第二控温冷却装置，所述中轧机组与第二剪切设备之间设置有第三控温冷却装置，所述精轧机组与第三剪切设备之间设置有第四控温冷却装置，所述减定径机组与第四剪切设备之间设置有第五控温冷却装置；Further, a first temperature-controlled cooling device is disposed between the pre-processing step and the roughing unit, and a second temperature-controlled cooling device is disposed between the roughing unit and the first shearing device, and the medium-rolling unit and A third temperature-controlled cooling device is disposed between the second shearing device, and a fourth temperature-controlled cooling device is disposed between the finishing device and the third shearing device, and the reduced-sizing unit and the fourth shearing device are disposed There is a fifth temperature control cooling device between them;
进一步，所述第一到第五控温冷却装置均采用控冷水箱；Further, the first to fifth temperature-controlled cooling devices all adopt a controlled cooling water tank;
进一步，所述三辊轧机每道次的延伸系数为1.0～1.6；Further, the three-roll mill has an elongation coefficient per pass of 1.0 to 1.6;
进一步：所述最后一架三辊轧机的延伸系数为1.0～1.3。Further: the elongation coefficient of the last three-roll mill is 1.0 to 1.3.
本发明的有益效果是：本发明工艺布置的生产方法通过全线设置高强度三辊轧机，轧制能力大，可实现单道次大压下，为控轧控冷生产细晶粒钢筋提供保障；另外，全线设置多处控温水箱，通过水、气等介质对轧件进行在线控温冷却，合理的轧件温度窗口加之配合轧机的大压下工艺，因此可实现高强度等级新型螺纹钢筋的有序生产。The invention has the beneficial effects that the production method of the process arrangement of the invention has a high-strength three-roll mill through a full line, and the rolling capacity is large, and the single-pass large reduction can be realized, and the production of fine-grain steel bars for controlled rolling and controlled cooling is provided; In addition, a plurality of temperature-controlled water tanks are installed in the whole line, and the rolling parts are subjected to on-line temperature-controlled cooling through a medium such as water and gas, and a reasonable rolling piece temperature window is added to the large reduction process of the rolling mill, so that a new type of threaded steel bar with high strength grade can be realized. Orderly production.
本发明的其他优点、目标和特征在某种程度上将在随后的说明书中进行阐述，并且在某种程度上，基于对下文的考察研究对本领域技术人员而言将是显而易见的，或者可以从本发明的实践中得到教导。本发明的目标和其他优点可以通过下面的说明书来实现和获得。Other advantages, objects, and features of the invention will be set forth in part in the description which follows, and in the <RTIgt; The teachings of the present invention are taught. The objectives and other advantages of the invention may be realized and obtained by the following description.
为了使本发明的目的、技术方案和优点更加清楚，下面将结合附图对本发明作进一步的详细描述，其中：In order to make the objects, technical solutions and advantages of the present invention more comprehensible, the present invention will be further described in detail with reference to the accompanying drawings in which:
图1为三侧带肋钢筋断面示意图；Figure 1 is a schematic cross-sectional view of a ribbed steel bar on three sides;
图2为本发明较佳实施例的生产工艺布置图。2 is a layout diagram of a production process in accordance with a preferred embodiment of the present invention.
以下将参照附图，对本发明的优选实施例进行详细的描述。应当理解，优选实施例仅为了说明本发明，而不是为了限制本发明的保护范围。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. It is to be understood that the preferred embodiments are merely illustrative of the invention and are not intended to limit the scope of the invention.
如图所示，一种三侧带肋螺纹钢筋的生产工艺布置，包括依次设置的前处理工序1、粗轧机组3、第一剪切设备5、中轧机组6、第二剪切设备8、精轧机组9、第三剪切设备11、减定径机组12、第四剪切设备14和后处理工序15，所述粗轧机组、中轧机组、精轧机组和减定径机组均采用高强度三辊轧机，所述精轧机组最后一架三辊轧机的辊面上刻有与三侧带肋钢筋表面肋部形状相吻合的月牙形肋槽。As shown in the figure, a production process arrangement of a three-sided ribbed threaded steel bar includes a pre-processing step, a rough rolling unit 3, a first shearing device 5, a middle rolling unit 6, and a second shearing device 8 which are sequentially disposed. Finishing mill 9, third shearing device 11, reduced sizing unit 12, fourth shearing device 14 and post-processing step 15, said roughing unit, medium rolling unit, finishing rolling unit and reducing sizing unit A high-strength three-roll mill is used, and the surface of the last three-roll mill of the finishing mill is engraved with a crescent-shaped rib groove that conforms to the shape of the rib surface of the three-sided ribbed steel bar.
本实施例中，前处理工序包括连铸出坯-坯料定尺-坯料下线堆放入库-坯料再加热-加热
炉加热后坯料出炉-高压水除鳞；后处理工序包括冷床冷却-冷剪(锯)切设备切定尺-成品棒材检查收集-打捆下线-入库堆放。In this embodiment, the pre-treatment process comprises continuous casting blank-blank length-blank blank pile into the warehouse-blank reheating-heating
After the furnace is heated, the billet is discharged - high pressure water descaling; the post-treatment process includes cold bed cooling - cold shear (saw) cutting equipment cutting scale - finished bar inspection and collection - baling off the line - storage stacking.
本实施例中，为了确保轧件尺寸精度和圆形断面精度，相邻轧机的轧辊分别呈正三角形和倒立的正三角形布置。In this embodiment, in order to ensure the dimensional accuracy of the rolling stock and the accuracy of the circular section, the rolls of the adjacent rolling mills are respectively arranged in an equilateral triangle and an inverted equilateral triangle.
本实施例中，所述前处理工序与粗轧机组之间设置有第一控温冷却装置2，所述粗轧机组与第一剪切设备之间设置有第二控温冷却装置4，所述中轧机组与第二剪切设备之间设置有第三控温冷却装置7，所述精轧机组与第三剪切设备之间设置有第四控温冷却装置10，所述减定径机组与第四剪切设备之间设置有第五控温冷却装置13；所述第一到第五控温冷却装置均采用控冷水箱；所述三辊轧机每道次的延伸系数为1.0～1.6；为确保最终产品的尺寸精度，所述最后一架三辊轧机的延伸系数为1.0～1.3。In this embodiment, a first temperature-controlled cooling device 2 is disposed between the pre-processing step and the roughing unit, and a second temperature-controlled cooling device 4 is disposed between the roughing unit and the first shearing device. A third temperature-controlled cooling device 7 is disposed between the middle rolling unit and the second shearing device, and a fourth temperature-controlled cooling device 10 is disposed between the finishing rolling mill and the third shearing device, the reducing diameter A fifth temperature-controlled cooling device 13 is disposed between the unit and the fourth shearing device; the first to fifth temperature-controlled cooling devices each adopt a controlled cooling water tank; and the elongation coefficient of each pass of the three-roll rolling mill is 1.0 1.6; To ensure the dimensional accuracy of the final product, the last three-roll mill has an elongation factor of 1.0 to 1.3.
本实施例生产出的螺纹钢三侧的肋在圆周方向呈120°均布在钢筋外表面四周，与传统二辊轧机生产的产品相比，轧制速度更快，产能更高，断面尺寸精度更高，性能更均匀，强度等级更高，可提高50mPa以上；同混凝土粘合程度更高，与传统二侧带肋螺纹钢筋相比粘合强度提高30％以上，并且承受多方向外力时钢筋与混凝土的错动量相比传统钢筋更小，使得建筑物更安全。从轧制成型角度上看，三辊精轧机对带肋螺纹钢筋轧制变形并形成最终月牙形钢筋肋部，三个轧辊同时对轧件断面三个方向进行轧制变形，成型效果更好，变形能力更强，尺寸精度更高，也适合从控轧控冷工艺角度生产细晶粒螺纹钢筋。The ribs on the three sides of the rebar produced in this embodiment are uniformly distributed around the outer surface of the steel bar in the circumferential direction at 120°. Compared with the products produced by the conventional two-roll mill, the rolling speed is faster, the productivity is higher, and the section size accuracy is obtained. Higher, more uniform performance, higher strength grade, can increase more than 50mPa; higher adhesion with concrete, more than 30% bond strength compared with traditional two-side ribbed steel bars, and steel bars with multi-directional external force Compared to the amount of concrete, the traditional steel bars are smaller, making the building safer. From the perspective of rolling forming, the three-roll finishing mill deforms the ribbed reinforced bar and forms the final crescent-shaped ribs. The three rolls simultaneously roll-deform the three sections of the rolling section, and the forming effect is better. It has stronger deformation ability and higher dimensional accuracy. It is also suitable for producing fine-grained reinforced bars from the perspective of controlled rolling and controlled cooling.
本实施例的生产方法不仅可以生产本发明中的新型三侧带肋螺纹钢筋，还可以用于生产优质圆钢。同样，本生产方法也适用于生产断面类似的高速线材带肋钢筋及圆盘条。The production method of the present embodiment can not only produce the novel three-side ribbed threaded steel bar of the present invention, but also can be used for producing high quality round steel. Similarly, the production method is also applicable to the production of high-speed wire ribbed steel bars and disc bars of similar cross section.
本实施例的生产特点是：(1)全线设置高强度三辊轧机，轧制能力大，可实现单道次大压下，为控轧控冷生产细晶粒钢筋提供保障；(2)全线设置多处控温水箱，通过水、气等介质对轧件进行在线控温冷却，合理的轧件温度窗口加之配合轧机的大压下工艺，实现高强度等级新型螺纹钢筋的有序生产；(3)全线生产工艺及布置灵活，可根据实际工艺需要，适当增减轧机机组，使得生产投资成本最优化，生产效益最大化。The production characteristics of this embodiment are as follows: (1) The high-strength three-roll mill is installed in the whole line, the rolling capacity is large, and the single-pass large reduction can be realized, which provides guarantee for the production of fine-grained steel bars by controlled rolling and controlled cooling; (2) full line Set up multiple temperature control water tanks, carry out on-line temperature control and cooling of the rolling stock through medium such as water and gas, and reasonable rolling window temperature window combined with the large reduction process of the rolling mill to realize the orderly production of new high-strength grade reinforced steel bars; 3) The whole line production process and layout are flexible. According to the actual process needs, the rolling mill unit can be appropriately increased or decreased, so that the production investment cost is optimized and the production benefit is maximized.
最后说明的是，以上实施例仅用以说明本发明的技术方案而非限制，尽管参照较佳实施例对本发明进行了详细说明，本领域的普通技术人员应当理解，可以对本发明的技术方案进行修改或者等同替换，而不脱离本技术方案的宗旨和范围，其均应涵盖在本发明的权利要求范围当中。
The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to be limiting. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art Modifications or equivalents are intended to be included within the scope of the appended claims.
Claims (5)
- 一种三侧带肋螺纹钢筋的生产工艺布置，包括依次设置的前处理工序、粗轧机组、第一剪切设备、中轧机组、第二剪切设备、精轧机组、第三剪切设备、减定径机组、第四剪切设备和后处理工序，其特征在于：所述粗轧机组、中轧机组、精轧机组和减定径机组均采用三辊轧机，所述精轧机组最后一架三辊轧机的辊面上刻有与三侧带肋钢筋表面肋部形状相吻合的月牙形肋槽。Production process arrangement of three-side ribbed steel bars, including pre-treatment steps, rough rolling units, first shearing equipment, medium rolling mills, second shearing equipment, finishing rolling mills, third shearing equipment , a reduction sizing unit, a fourth shearing device and a post-treatment process, characterized in that: the roughing unit, the medium rolling unit, the finishing rolling unit and the reducing and sizing unit all adopt a three-roll rolling mill, and the finishing rolling unit is finally A roll surface of a three-roll mill is engraved with a crescent-shaped rib groove that conforms to the shape of the rib surface of the three-sided ribbed steel bar.
- 根据权利要求1所述的三侧带肋螺纹钢筋的生产工艺布置，其特征在于：所述前处理工序与粗轧机组之间设置有第一控温冷却装置，所述粗轧机组与第一剪切设备之间设置有第二控温冷却装置，所述中轧机组与第二剪切设备之间设置有第三控温冷却装置，所述精轧机组与第三剪切设备之间设置有第四控温冷却装置，所述减定径机组与第四剪切设备之间设置有第五控温冷却装置。The production process arrangement of the three-side ribbed rebar according to claim 1, wherein: the pre-treatment process and the roughing unit are provided with a first temperature-controlled cooling device, and the roughing unit and the first A second temperature-controlled cooling device is disposed between the shearing device, and a third temperature-controlled cooling device is disposed between the middle rolling mill and the second shearing device, and the finishing mill is disposed between the finishing device and the third shearing device There is a fourth temperature-controlled cooling device, and a fifth temperature-controlled cooling device is disposed between the reduced-diameter unit and the fourth shearing device.
- 根据权利要求2所述的三侧带肋螺纹钢筋的生产工艺布置，其特征在于：所述第一到第五控温冷却装置均采用控冷水箱。The production process arrangement of the three-side ribbed rebar according to claim 2, wherein the first to fifth temperature-controlled cooling devices each adopt a controlled cooling water tank.
- 根据权利要求1所述的三侧带肋螺纹钢筋的生产工艺布置，其特征在于：所述三辊轧机每道次的延伸系数为1.0～1.6。The production process arrangement of the three-sided ribbed rebar according to claim 1, wherein the three-roll mill has an elongation coefficient of 1.0 to 1.6 per pass.
- 根据权利要求1所述的三侧带肋螺纹钢筋的生产工艺布置，其特征在于：所述最后一架三辊轧机的延伸系数为1.0～1.3。 The production process arrangement of the three-sided ribbed rebar according to claim 1, wherein the last three-roll mill has an elongation coefficient of 1.0 to 1.3.
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| CN201410210872.0 | 2014-05-19 | ||
| CN201410210872.0A CN103978030B (en) | 2014-05-19 | 2014-05-19 | The production process equipment of a kind of three side spiral with ribbing |
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