CN1712179A - Process for producing screw-thread steel by draw-milling - Google Patents
Process for producing screw-thread steel by draw-milling Download PDFInfo
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- CN1712179A CN1712179A CN 200510046931 CN200510046931A CN1712179A CN 1712179 A CN1712179 A CN 1712179A CN 200510046931 CN200510046931 CN 200510046931 CN 200510046931 A CN200510046931 A CN 200510046931A CN 1712179 A CN1712179 A CN 1712179A
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Abstract
A technology for manufacturing the reinforcing bar with spiral ribs by rolling-drawing method includes such steps as paying-off removing oxidized surface by multiple rolling rollers, reducing diameter by Y-type three-roller rolling-drawing unit, forming ribs by dual-die spiral rib forming unit, and taking-up. It features use of a cooling-lubricating system.
Description
Technical field
The invention belongs to the technical field of the metal rolled method that in continuous process, is used for rolled wire or similar small bore material, a kind of new technology that the method for pulling out is produced spiral ribbed reinforced bar of rolling promptly is provided.
Background technology
Spiral ribbed reinforced bar is commonly called as the negative thread reinforcing bar, is a kind of high strength cast iron, is widely used in fields such as skyscraper, harbour, bridge, highway and airport.For steel and iron industry, it is the deep processed product of a kind of high added value, high benefit, thereby the improvement of its production technology is subjected to always relevant producer and technical staff's attention.
The production technology of existing spiral ribbed reinforced bar comprises unwrapping wire, descales, operation such as cold drawn wire drawing and take-up that its operating process is: wire rod is emitted by pay off rack; Behind descaling mill or descaling bath removal surface scale, enter in the lubricating arrangement that is placed with Dry-powder Lubricant; Again through wire drawing machine by wire drawing die carry out tube reducing, sizing and quarter rib technological processes such as moulding, finally become cold-drawn spiral ribbed reinforced bar product.
Chinese patent 88216188.1 is changed unit afterbody circular hole drawing machine on common hot candied unit, installs screw thread in its position and rolls the rolling shaped device, to produce the screw-thread steel wire rod.And Chinese patent application case 91104016.1 discloses a kind of " technology for forming multiple-thread steel by cold drawing ", but it has just added a Device for preventing rotation before the shaped device of last patent, only provide a kind of safety guarantee for production technology.Chinese patent ZL97103834.1 discloses a kind of " cloudy (recessed) equipment for producing steel bar with concave screw ", its major technique feature is that the single mold that will bear tube reducing and cutting dual role in the existing wire drawing machine diaphragm capsule simultaneously is divided into tube reducing mould and two moulds of cutting mould, and a material guide mechanism has been installed before the tube reducing mould simultaneously.
Above-mentioned these evolutionary approach fundamentally do not overcome the following shortcoming of existing spiral ribbed reinforced bar production technology:
(1) owing to use wire drawing die tube reducing, sizing and rib drawing moulding at quarter, shaping resistance is very big, has both limited drawing speed, reduces production efficiency; Can make spiral revolve the rib steel muscle again and have very big internal stress, even can make the reinforcing bar fracture, the difficult quality of product is guaranteed;
(2) wire rod through its surface scale after the roll-type de-scaling and can not remove fully clean, in the Cold Drawing Process that enters fixing wire drawing die subsequently, hard oxide skin detritus in the sliding friction process, wire drawing die both easy to wear; Easily embed the quality that influences product in the rebar matrix again.And adopt the descaling bath scale removal, and then can bring serious environmental to pollute, also can greatly have influence on operating personnel's working condition.
Summary of the invention
Aim of the present invention is to seek a kind of production technology that can overcome the spiral ribbed reinforced bar of above-mentioned shortcoming, and can solve in the spiral ribbed reinforced bar Cold Drawing Process friction effectively and cool off two great difficult problems, thereby reach the purpose of enhancing productivity, reducing cost and improving product quality.
A kind of process for producing screw-thread steel by draw-milling proposed by the invention, comprise unwrapping wire, descale, tube reducing, rib moulding at quarter and each process flow of take-up, it is characterized in that changing the tube reducing operation into roll finished by wire drawing die and will descale, tube reducing and each operation of rib moulding at quarter adopt roller multiple roll de-scaling device respectively; Y type three rollers pull out milling train and double mode spiral ribbed reinforced bar shaped device is finished.
The said roller multiple roll of the present invention de-scaling device is characterized in that it replaces two groups of running rollers arranging by vertical and level respectively and forms.And be equipped with the housing screw that to regulate up-down rollers (or left and right sides roller) relative position.
Every group of running roller number in above-mentioned two groups of running rollers is generally 3～7, and is carved with the pass of different size on the running roller.
Said Y type three rollers of the present invention pull out milling train and it is characterized in that its three rolls become positive Y type or inverted Y-shaped combination, and the two adjacent groups roll is respectively by positive Y type with inverted Y-shapedly alternately arrange, and be equipped with can be radially or axially adjust the handle that shakes of roll location simultaneously.
The said double mode spiral ribbed reinforced bar shaped device of the present invention is characterized in that its wire drawing die is combined by the shaping mould (channel mould at once) of a fixing plug die and a rotation respectively.
The present invention adopts cooling and lubricating system comprehensively to solve the cooling and two hang-ups that rub, and adopts the effect of fluid lubricant with performance cooling simultaneously and lubricated two aspects.It is characterized in that cooling and lubricating system is made up of each parts of cooling and lubricating groove of liquid reserve tank, fluid-flow pump, settling tank, carrier pipe, at least one valve and band leveling device and return port, roller multiple roll de-scaling device, Y type three rollers can be pulled out milling train, double mode spiral ribbed reinforced bar shaped device all places the cooling and lubricating groove.Immerse in the lubricating fluid that flows when reinforcing bar is produced and directly cool off and lubricate.Also roller multiple roll de-scaling device, Y type three rollers can be pulled out milling train and be placed in cooling and lubricating groove top, only double mode spiral ribbed reinforced bar shaped device is placed in the groove, lubricating fluid is added in the reinforcing bar rubbing surface that with roll surface and mould contact on by the shower nozzle spray more than three that connects at least more than one valve at least during production, and reinforcing bar is cooled off and lubricates.And the still dip directly cooling and lubricated in the cooling and lubricating groove of plug die, shaping mould and reinforcing bar.
The production technology of spiral ribbed reinforced bar of the present invention, earlier with roller multiple roll de-scaling device, Y type three rollers pull out milling train and double mode spiral ribbed reinforced bar shaped device is installed on the same axis when implementing, and aim at the tangent position of the up-coiler wheel carrier of take-up.
Start the general supply of above-mentioned production line, then wire rod is introduced roller multiple roll de-scaling device through pay off rack, the curved repeatedly iron scale of removing the wire rod surface that rolls through roll, entering Y type three rollers subsequently pulls out milling train and carries out the tube reducing modification, make wire rod obtain the predetermined deformation amount by rolling, and residual iron scale is all peeled off, and pour in the settling tank by lubricating fluid.At last, enter the double mode spiral ribbed reinforced bar shaped device that is equipped with plug die and shaping mould through the wire rod behind the rolling tube reducing and carry out the drawing modification, obtain meeting the spiral ribbed reinforced bar product of design specification.
In the process of the rolling of whole wire rod and drawing modification, liquid reserve tank by cooling and lubricating system is supplied with lubricating fluid by pump, spray respectively on the roll and reinforcing bar of milling train through conveyance conduit, at least one valve and the shower nozzle more than at least three again, also lubricating fluid is constantly injected simultaneously in the cooling and lubricating groove of band leveling device and return port, plug die, shaping mould and the complete dip of reinforcing bar are wherein cooled off in lubricating fluid with lubricated.
Adopt production technology of the present invention and corresponding supporting device to produce spiral ribbed reinforced bar, its major advantage has:
(1) adopts roller multiple roll de-scaling device can remove the iron scale on wire rod surface effectively, reduce the wearing and tearing of wire rod, in the service life that had both helped improving wire drawing die, also help improving the surface quality of reinforcing bar wire drawing die;
(2) pull out the tube reducing operation that milling train replaces wire rod with Y type three rollers, compare with the drawing tube reducing, the rolling tube reducing is obviously more reasonable, and this not only can improve the surface quality of reinforcing bar, and can reduce the residual stress of reinforcing bar, increases the plasticity and the yield tensile ratio of reinforcing bar;
(3) wire drawing die (plug die and shaping mould) and reinforcing bar are fully immersed in the mobile lubricating fluid, make mould and reinforcing bar all be cooled off preferably and lubricate, this helps enhancing productivity, reduces the mould loss, and this also helps improving the reinforcing bar product quality;
(4) the employing fluid lubricant replaces the Dry-powder Lubricant of traditional handicraft, eliminates the dust pollution of environment, helps environmental protection and operating personnel's working condition.
(5) use the mechanical type scale removal, simplified production process, removed pickling process again from.So both eliminate environmental pollution, equally also improved operating personnel's working condition.
Description of drawings
Fig. 1 is the traditional processing technology FB(flow block) of spiral ribbed reinforced bar;
Fig. 2 is a spiral ribbed reinforced bar technological process of production block diagram of the present invention;
Fig. 3 is the layout and the structural representation of production technology package unit of the present invention, 1 pay off rack among the figure; 2 wire rods, 3 roller multiple roll de-scaling devices; 4Y type three rollers pull out milling train; 5 double mode spiral ribbed reinforced bar shaped devices; 6 plug dies; 7 shaping moulds; 8 spiral ribbed reinforced bar finished products; 9 admission machines; 10 liquid reserve tanks; 11 fluid-flow pumps; 12 conveyance conduits; 13 valves; 14 shower nozzles; 15 cooling and lubricating grooves, 16 settling tanks and 17 power set.
The specific embodiment
Below by embodiment content of the present invention is further described and replenishes.
Earlier settle production line of the present invention by layout shown in Figure 3.From front to back, install and fix pay off rack 1, roller multiple roll de-scaling device 3, Y type three rollers point-blank and pulled out milling train 4, double mode spiral ribbed reinforced bar shaped device 5, plug die 6, shaping mould 7, power set 17 and admission machine 9.Adjust roller multiple roll de-scaling device earlier, the above roll vertical and level of two groups of alternately arranging is respectively formed, and every group of roll number is 3～7, is carved with the pass of different size on each running roller.Adjust Y type three rollers again and pull out milling train, arrange two groups of totally six rolls by positive Y shape and the shape of falling Y, being equipped with on its roller frame can be radially or the axial handle that shakes of regulating the roll relative position simultaneously.Adjust the double mode spiral ribbed reinforced bar shaped device of band plug die and shaping mould at last.Plug die is to be fixed on the frame during installation, and shaping mould is then rotated by motor-driven.
Cooling and lubricating system is installed, and cooling and lubricating system is made up of liquid reserve tank 10, fluid-flow pump 11, liquid-transport pipe-line 12, valve 13 and shower nozzle 14, cooling and lubricating groove 15 and settling tank 16.Y type three rollings adopt the lubricated cooling of shower nozzle, and plug die and shaping mould then are immersed in the cooling and lubricating groove, directly cool off and lubricate.The cooling and lubricating groove is equipped with leveling device, and its below is equipped with the return port that is connected to settling tank.
After above-mentioned production line and supporting cooling and lubricating system Installation and Debugging well, just can carry out the production of spiral ribbed reinforced bar, its production example is as follows:
Embodiment 1
Produce the cold rolling spiral reinforcement of WCD-H (being the negative thread reinforcing bar) of Φ 10mm with technology of the present invention and device.
Adopt the Q235 hot rolling wire rod 2 of Φ 14mm and make raw material, wire rod is placed on the pay off rack 1, and the wire rod head introduced roller multiple roll de-scaling device 3, and the de-scaling device of present embodiment designs three groups of running rollers, and it is 2 of top rolls, 3 of lower rolls that first group of running roller has 5 up-down rollers; Second group of running roller has 7 left and right sides rollers, promptly left 3 right sides 4; The 3rd group of running roller has 3 up-down rollers, promptly goes up 2 times 1.Wire rod is snakelike advancing by the impact and the friction on running roller surface in addition, promptly does the kinking campaign between running roller, surface scale can be peeled off, and the oxide skin after peeling off is washed away by the lubricating fluid that shower nozzle 14 sprays immediately.
The wire rod of removing surface scale just enters Y type three rollers and pulls out milling train 4 and carry out tube reducing.Y type three rollers pull out milling train and have two groups of rolls, every group has three rolls, they become positive Y type and inverted Y-shaped layout respectively, first group of roll drafts 20%, second group of roll drafts is about 10%, being wire rod pulls out the milling train tube reducing by Φ 14mm → 11.1mm → 10mm through Y type three rollers, is lubricated with shower nozzle 14 spray lubrication liquid in pulling out the process of rolling and cools off.
Wire rod enters double mode spiral ribbed reinforced bar shaped device 5 through tube reducing, and this device is immersed in the cooling and lubricating groove 15.Earlier the burr on wire rod surface is removed and proofread and correct its ovality through plug die 6, the shaping mould 7 by rotation carves cross rib on the wire rod surface then, makes qualified spiral ribbed reinforced bar 8.Finally deliver goods by admission machine 9 winders.Through check, quality meets the standard of GB/T5223-2002.
Produce the cold drawn helix rib steel wire of WLR-H of Φ 6mm with technology of the present invention and device.
Adopting the Φ 10mm trade mark is that 82MnA gren rod 2 is made raw material, wire rod is placed on the pay off rack 1, and its head is introduced roller multiple roll de-scaling device 3.The de-scaling device of present embodiment has designed two groups of running rollers, and first group of running roller has 7 up-down rollers, promptly goes up 3 times 4; Second group of running roller has 5 left and right sides rollers, promptly left 3 right sides 2.Impact and the friction of wire rod by the running roller surface, in addition about the running roller intercropping, left and right sides kinking campaign, its surface scale can be peeled off totally, and the oxide skin after peeling off washes away with being the lubricating fluid that shower nozzle 14 sprayed.
Going the wire rod of clean surface scale to enter Y type three rollers subsequently pulls out milling train 4 and carries out the roll compacting tube reducing.Y type three rollers pull out milling train and have two groups of rolls, and every group has three rolls, and they become positive Y type and inverted Y-shaped layout respectively.First group of roll drafts is that 25%, the second group of drafts is 20%, and promptly wire rod pulls out the milling train tube reducing by Φ 10mm → 7.5mm → 6mm through Y type three rollers.In pulling out the process of rolling, lubricating fluid by two valves 13 and six shower nozzles 14 from around spray roller surface and wire rod 2 contacted rubbing surfaces and be lubricated and cool off.
Wire rod enters double mode spiral ribbed reinforced bar shaped device 5 behind tube reducing, this device is immersed in the cooling and lubricating groove 15.With plug die 6 wire rod surface burr is removed earlier, and proofread and correct the ovality of wire rod; Carving cross rib by the stock mould 7 that rotates on the wire rod surface again is negative thread, makes qualified spiral ribbed reinforced bar 8 and is wound into dish by admission machine.Promptly become underrelaxation through suitable heat treatment again and revolve rib steel wire (WLR-H steel wire).Through performance test, quality meets the standard of GB/T5223-2002 fully.
Method and apparatus of the present invention is suitable for the helix rib steel wire various for prestressed concrete among the production national standard GB/T5223-2002 fully, comprising: (cold-)drawn (steel)wire (WCD); Underrelaxation steel wire (WLR) and common lax steel wire (WNR) are only produced back two kinds of helix rib steel wires after pulling out the type of rolling into, and need and carry out suitable heat treatment of short time.Then can adopt method and apparatus of the present invention to carry out as for cold rolling moulding process.
Claims (7)
1, a kind of process for producing screw-thread steel by draw-milling, comprise unwrapping wire, descale, tube reducing, rib moulding at quarter and each process flow of take-up, it is characterized in that the tube reducing operation with roll replace wire drawing die finish and descale, tube reducing and rib moulding at quarter system adopts roller multiple roll de-scaling device, Y type three rollers to pull out milling train respectively and double mode spiral ribbed reinforced bar shaped device is finished.
2, by the described process for producing screw-thread steel by draw-milling of claim 1, it is characterized in that said roller multiple roll de-scaling device replaces the running roller of arranging more than two groups by vertical and level respectively and forms, also be equipped with the housing screw that to regulate up-down rollers or left and right sides roller relative position on the device.
3, by the described spiral ribbed reinforced bar production technology of claim 1, it is characterized in that its three rolls of said y-type three-roll mill become positive Y type or inverted Y-shaped combination, and the two adjacent groups roll is arranged by positive Y type and inverted Y-shaped replacing respectively, and is equipped with the handle that shakes that can radially axially regulate the roll relative position simultaneously.
4, by the described process for producing screw-thread steel by draw-milling of claim 1, the wire drawing die that it is characterized in that said double mode spiral ribbed reinforced bar shaped device respectively by the shaping mould of a fixing plug die and a rotation at once channel mould combine.
5, by the described process for producing screw-thread steel by draw of claim 2, it is characterized in that its number of every group of running roller in said two groups of running rollers is 3～7, be carved with the pass of different size on each running roller.
6, a kind of matching used cooling and lubricating system of the described process for producing screw-thread steel by draw-milling of claim 1 that supplies comprises liquid reserve tank, fluid-flow pump, settling tank, conveyance conduit and at least more than one valve, it is characterized in that:
(1) be equipped with in addition with valve connect more than at least three to rolling the shower nozzle that pulls out machine roll and reinforcing bar spray lubrication liquid;
(2) also be equipped with the band leveling device of dip plug die and shaping mould and be connected to the lubricious groove of cooling of the return port of settling tank simultaneously.
7,, it is characterized in that said liquid reserve tank and settling tank bottom communicates by the described cooling and lubricating system of claim 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510046931 CN1712179A (en) | 2005-07-27 | 2005-07-27 | Process for producing screw-thread steel by draw-milling |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510046931 CN1712179A (en) | 2005-07-27 | 2005-07-27 | Process for producing screw-thread steel by draw-milling |
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| CN1712179A true CN1712179A (en) | 2005-12-28 |
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| CN 200510046931 Pending CN1712179A (en) | 2005-07-27 | 2005-07-27 | Process for producing screw-thread steel by draw-milling |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102125940A (en) * | 2011-04-01 | 2011-07-20 | 天津市建科机械制造有限公司 | Descaling device for cold-rolled steel bar rolling mill |
| CN102303066A (en) * | 2011-05-24 | 2012-01-04 | 张家港市亨昌焊材有限公司 | Welding wire cleaning device |
| CN103978030A (en) * | 2014-05-19 | 2014-08-13 | 中冶赛迪工程技术股份有限公司 | Production process device for rebar with ribs at three sides |
| CN105251787A (en) * | 2015-09-23 | 2016-01-20 | 中国钢研科技集团有限公司 | Clean production method for rolled type finned heat radiation pipe |
| CN106623480A (en) * | 2017-01-19 | 2017-05-10 | 辽宁通达建材实业有限公司 | Production method of prestressed wire with small transmission length |
| CN108672493A (en) * | 2018-04-11 | 2018-10-19 | 新疆八钢铁股份有限公司 | A kind of hot drawing formula milling method |
| CN110523801A (en) * | 2019-09-12 | 2019-12-03 | 何满潮 | The processing technology of NPR steel bar rounding |
| CN111889509A (en) * | 2020-06-01 | 2020-11-06 | 邯郸一三高研科技有限公司 | Cold-rolled ribbed steel bar production equipment and production method |
| CN113088655A (en) * | 2021-03-29 | 2021-07-09 | 福建三宝钢铁有限公司 | Preparation method of CrHRB 400E-containing hot-rolled ribbed steel bar product |
| CN114178309A (en) * | 2021-11-15 | 2022-03-15 | 广州广钢新材料股份有限公司 | Controlled cooling method and device for hot-rolled ribbed steel bar |
-
2005
- 2005-07-27 CN CN 200510046931 patent/CN1712179A/en active Pending
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102125940A (en) * | 2011-04-01 | 2011-07-20 | 天津市建科机械制造有限公司 | Descaling device for cold-rolled steel bar rolling mill |
| CN102303066A (en) * | 2011-05-24 | 2012-01-04 | 张家港市亨昌焊材有限公司 | Welding wire cleaning device |
| CN102303066B (en) * | 2011-05-24 | 2012-09-05 | 张家港市亨昌焊材有限公司 | Welding wire cleaning device |
| CN103978030A (en) * | 2014-05-19 | 2014-08-13 | 中冶赛迪工程技术股份有限公司 | Production process device for rebar with ribs at three sides |
| CN103978030B (en) * | 2014-05-19 | 2016-05-04 | 中冶赛迪工程技术股份有限公司 | The production process equipment of a kind of three side spiral with ribbing |
| CN105251787A (en) * | 2015-09-23 | 2016-01-20 | 中国钢研科技集团有限公司 | Clean production method for rolled type finned heat radiation pipe |
| CN106623480A (en) * | 2017-01-19 | 2017-05-10 | 辽宁通达建材实业有限公司 | Production method of prestressed wire with small transmission length |
| CN108672493A (en) * | 2018-04-11 | 2018-10-19 | 新疆八钢铁股份有限公司 | A kind of hot drawing formula milling method |
| CN110523801A (en) * | 2019-09-12 | 2019-12-03 | 何满潮 | The processing technology of NPR steel bar rounding |
| CN110523801B (en) * | 2019-09-12 | 2020-11-06 | 何满潮 | Processing technology of NPR steel bar wire rod |
| US20220314291A1 (en) * | 2019-09-12 | 2022-10-06 | Manchao He | Processing method of npr steel rebar coil |
| US11679429B2 (en) * | 2019-09-12 | 2023-06-20 | Jing-Jin Electric Technologies Co., Ltd. | Processing method of NPR steel rebar coil |
| CN111889509A (en) * | 2020-06-01 | 2020-11-06 | 邯郸一三高研科技有限公司 | Cold-rolled ribbed steel bar production equipment and production method |
| CN111889509B (en) * | 2020-06-01 | 2022-08-30 | 邯郸一三高研科技有限公司 | Cold-rolled ribbed steel bar production equipment and production method |
| CN113088655A (en) * | 2021-03-29 | 2021-07-09 | 福建三宝钢铁有限公司 | Preparation method of CrHRB 400E-containing hot-rolled ribbed steel bar product |
| CN114178309A (en) * | 2021-11-15 | 2022-03-15 | 广州广钢新材料股份有限公司 | Controlled cooling method and device for hot-rolled ribbed steel bar |
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