CN106944475A - High line exempts from the milling method of pickling steel for welding wire - Google Patents
High line exempts from the milling method of pickling steel for welding wire Download PDFInfo
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- CN106944475A CN106944475A CN201710160813.0A CN201710160813A CN106944475A CN 106944475 A CN106944475 A CN 106944475A CN 201710160813 A CN201710160813 A CN 201710160813A CN 106944475 A CN106944475 A CN 106944475A
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- wire
- steel
- welding wire
- rolling
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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
Abstract
The invention discloses the milling method that a kind of high line exempts from pickling steel for welding wire, its technique is：Strand is rolled using high-speed wire production line, and high-speed wire production line includes heating furnace, rolling zone and air-cooled area；The start rolling temperature of controlled rolling area roughing is 930~1000 DEG C, and it is 900~950 DEG C to enter finishing mill temperature, and laying temperature is 840~860 DEG C；Using gases at high pressure purging rolled piece surface between the frame of rolling zone；Control the slow cooling cooling rate≤1 DEG C/s in air-cooled area.It is directly hot candied that this method can allow downstream user to realize that steel for welding wire wire rod exempts from pickling, technique is simple, be easy to operation, effect obvious, the wire broken rate in wire drawing process can be greatly reduced, it is to avoid can only the reduction of speed situation produced and the safety of employees's accident brought therewith due to frequent fracture of wire.
Description
Technical field
The present invention relates to a kind of production method of high line welding wire steel, especially a kind of high line exempts from the rolling of pickling steel for welding wire
Method.
Background technology
The downstream user of welding wire steel uses the wire rod of welding wire of high line Workshop Production as hot candied raw material, in former wire drawing process,
Welding wire steel wire rod can remove the most of iron scale powder in wire rod surface after pickling, on wire drawing process without influence.
At present, the hot candied factory of welding wire steel is numerous and confused using the pickling cancelled before just pulling out under the pressure of local government's environmental protection, the pressure of cost
Technique carries out hot candied.Due to the change of its production technology, washed by ortho acid and be changed to exempt from pickling, carried out just pulling out again by mechanical descaling, lead
Wire rod of welding wire is caused in drawing process, iron scale is difficult to peel off, easily block hot candied eye mask, frequently broken string；Welding wire steel is hot candied
Factory can only reduction of speed production（600 meters are down to from 850 meters per minute）, greatly affect the yield of welding wire steel user.
In summary, the production technology change of welding wire steel downstream user, either from operating speed still from operation quality
For upper, all it be badly in need of welding wire steel wire rod raw material manufacturing enterprise and break current intrinsic production model, explores a kind of technique simply, just
Significantly exempt from the new production process of pickling steel for welding wire in operation, effect.
The content of the invention
The technical problem to be solved in the present invention is to provide the rolling side that a kind of simple high line of technique exempts from pickling steel for welding wire
Method.
In order to solve the above technical problems, the technical solution used in the present invention is：Strand is entered using high-speed wire production line
Row rolling, high-speed wire production line includes heating furnace, rolling zone and air-cooled area；The start rolling temperature of controlled rolling area roughing is 930
~1000 DEG C, it is 900~950 DEG C to enter finishing mill temperature, and laying temperature is 840~860 DEG C；High pressure is used between the frame of rolling zone
Gas purging rolled piece surface；Control the slow cooling cooling rate≤1 DEG C/s in air-cooled area.
The air pressure of gases at high pressure of the present invention is 0.5~0.6Mpa.
It is of the present invention enter heating furnace strand using filled one steel loading mode.
It is using the beneficial effect produced by above-mentioned technical proposal：The present invention can allow downstream user to realize steel for welding wire
It is directly hot candied that wire rod exempts from pickling, and technique is simple, be easy to operation, effect substantially, and the fracture of wire in wire drawing process can be greatly reduced
Rate, it is to avoid can only the reduction of speed situation produced and the safety of employees's accident brought therewith due to frequent fracture of wire.
Brief description of the drawings
The present invention is further detailed explanation with reference to the accompanying drawings and detailed description.
Fig. 1 is the structural representation of high-speed wire production line of the present invention；
Fig. 2 is water bar and high-pressure blast blow device schematic diagram between rolling zone frame of the present invention；
Fig. 3 is air-cooled roller-way slow cooling area control schematic diagram of the invention.
In figure：1- heating furnaces；2- rolling zones；The air-cooled areas of 3-；4- rolls；5- high-pressure air hoses；6- rolled pieces；7- prevents
Water baffle plate；8- pours groove water pipe；9- stay-warm cases；10- air door of fan.
Embodiment
The milling method that this high line exempts from pickling steel for welding wire is rolled using high-speed wire production line, shown in Fig. 1, at a high speed
Wire rod production line includes heating furnace 1, rolling zone 2 and air-cooled area 3；Its production technology is as described below：
（1）Slow compared with mill run according to steel for welding wire rhythm of production 1 minute the characteristics of, with reference to casting blank cross-section size is rolled, rationally
The step pitch of heating furnace is adjusted, formulation exempts from pickling steel for welding wire and " filled one " steel loading mode；It is described that " having filled one " is
During steel loading, a steel billet is first filled, heating furnace step-by-step movement is gone further an empty step, then refills next steel billet ... periodic intervals
Ground steel loading mode.
（2）According to the hole type characteristic of each sortie milling train of rolling zone, shown in Fig. 2, with outside the groove pass being engaged with roll 4
The complementary water bar 7 of molded dimension, water bar 7 is arranged between each frame in milling train area 2, to prevent that milling train from pouring groove water pipe
The 8 groove water that pours directly contacts with the surface of rolled piece 6 and causes Quench；And high-pressure air hose 5 is installed between frame, by controlling blast to be
0.5~0.6Mpa, purges the residual water in the surface of rolled piece 6.Water bar 7 is set and purges the residual water in rolled piece surface and is mainly production and exempts from pickling
During welding wire steel, it is to avoid the part Quench of rolled piece surface, the uneven of structure property is caused.
（3）Pickling steel for welding wire products characteristics are exempted from according to rolling, continuous casting billet surface oxidation scaling loss iron sheet growing amount is controlled,
And ensuring that iron sheet is removed totally after high-pressure water descaling, start rolling temperature is controlled at 930~1000 DEG C；Rolled for the heating that avoids finish rolling
Cause to exempt from pickling structure of steel, performance influence, and carry out the control of secondary oxidation iron sheet amount, enter finishing mill temperature control and exist
900~950 DEG C；To ensure to exempt from pickling structure of steel, performance, and carry out the control of secondary oxidation iron sheet amount, laying temperature control
At 840~860 DEG C.
（4）Slow cooling cooling rate≤1 DEG C/the s in slow cooling area is controlled, to ensure that exempt from pickling steel for welding wire terminates in the phase transformation of slow cooling area,
Tissue, grain size, performance etc. meet product requirement.To reach above-mentioned slow cooling cooling rate requirement, four sections of speed of air-cooled roller-way are first determined
Vi is spent, is respectively：0.18m/s、0.20m/s、0.25m/s、 0.40m/s；Slow cooling section length Li is determined again, i.e., be incubated on platform
The input amount of cover, is 1#~19#；Then, take into full account above and below slow cooling area platform that thermograde is poor, seasonal variations cooling rate difference is to exempting from
The influence of pickling steel for welding wire, shown in Fig. 3, determines the Close All of 1#~11# air door of fan 10 under platform, 12# fan deliveries
40%.The input amount of described stay-warm case refers to：Shown in Fig. 3, air-cooled roller-way amounts to 24 pieces of stay-warm cases 9, and by being smoothed out compiling
Number, when pickling welding wire steel is exempted from production, select 1#~19# stay-warm cases 9 to come into operation according to set production technology, remaining unlatching.
When downstream user exempt from pickling wire drawing using wire rod of welding wire produced by the invention, scale on surface is easy to stripping
Fall, do not occur broken string phenomenon in drawing process, wire broken rate is down to 0 times/day by former 50 times/day；Pulled out using pickling steel for welding wire is exempted from
Silk, carefully pulls out speed and decisive role is played to the yield of user, user pulls out wire rod to the half of 3.2mm as at the beginning of 5.5mm former material
Finished product, is then carefully pulled out to 1.0mm, 1.2mm finished silk again, and the maximum speed carefully pulled out is respectively 750m/min, 850m/min, stabilization
Property preferably, hot candied speed improves about 30%, and using effect highly significant alleviates environment sour in wire drawing process dirty to a certain extent
Dye, reduces the manufacturing cost of downstream user.Economic Efficiency, 1500 tons of meters of contracted quantity are increased according to pickling steel for welding wire month is exempted from
Calculate, 18000 tons of pickling steel for welding wire is exempted from year increase；Add up to 200 yuan of calculating of synergy according to ton steel, add up to synergy=18000*200 in year
=360 ten thousand yuan.
Embodiment 1：The concrete technology for the milling method that this high line exempts from pickling steel for welding wire is as described below.
The strand of steel for welding wire is rolled using high-speed wire production line, using the one steel loading mode of having filled by strand
The feeding heating furnace at interval is heated；The start rolling temperature of controlled rolling area roughing is 960 DEG C, enters finishing mill temperature for 920 DEG C,
Laying temperature is 845 DEG C；Using 0.5Mpa pressure-air purging rolled piece surface between the frame of rolling zone；Control the slow of air-cooled area
Cold speed is 0.8 DEG C/s.
Wire rod obtained by the present embodiment is produced through follow-up drawing, is drawn to the maximum speed difference of 1.0mm, 1.2mm finished silk
For 750m/min, 850m/min, output increased nearly 30%；Drawing process is smoothly and without appearance broken string phenomenon, surface colour after copper facing
Pool works well.
Embodiment 2：The concrete technology for the milling method that this high line exempts from pickling steel for welding wire is as described below.
The strand of steel for welding wire is rolled using high-speed wire production line, using the one steel loading mode of having filled by strand
The feeding heating furnace at interval is heated；The start rolling temperature of controlled rolling area roughing is 930 DEG C, enters finishing mill temperature for 900 DEG C,
Laying temperature is 840 DEG C；Using 0.6Mpa pressure-air purging rolled piece surface between the frame of rolling zone；Control the slow of air-cooled area
Cold speed is 0.7 DEG C/s.
Wire rod obtained by the present embodiment is produced through follow-up drawing, is drawn to the maximum speed difference of 1.0mm, 1.2mm finished silk
For 750m/min, 850m/min, output increased nearly 30%；Drawing process is smoothly and without appearance broken string phenomenon, surface colour after copper facing
Pool works well.
Embodiment 3：The concrete technology for the milling method that this high line exempts from pickling steel for welding wire is as described below.
The strand of steel for welding wire is rolled using high-speed wire production line, using the one steel loading mode of having filled by strand
The feeding heating furnace at interval is heated；The start rolling temperature of controlled rolling area roughing is 970 DEG C, enters finishing mill temperature for 930 DEG C,
Laying temperature is 860 DEG C；Using 0.55Mpa pressure-air purging rolled piece surface between the frame of rolling zone；Control air-cooled area
Slow cooling cooling rate is 1.0 DEG C/s.
Wire rod obtained by the present embodiment is produced through follow-up drawing, is drawn to the maximum speed difference of 1.0mm, 1.2mm finished silk
For 750m/min, 850m/min, output increased nearly 30%；Drawing process is smoothly and without appearance broken string phenomenon, surface colour after copper facing
Pool works well.
Embodiment 4：The concrete technology for the milling method that this high line exempts from pickling steel for welding wire is as described below.
The strand of steel for welding wire is rolled using high-speed wire production line, using the one steel loading mode of having filled by strand
The feeding heating furnace at interval is heated；The start rolling temperature of controlled rolling area roughing is 1000 DEG C, and it is 950 to enter finishing mill temperature
DEG C, laying temperature is 850 DEG C；Using 0.5Mpa pressure-air purging rolled piece surface between the frame of rolling zone；Control air-cooled area
Slow cooling cooling rate be 0.9 DEG C/s.
Wire rod obtained by the present embodiment is produced through follow-up drawing, is drawn to the maximum speed difference of 1.0mm, 1.2mm finished silk
For 750m/min, 850m/min, output increased nearly 30%；Drawing process is smoothly and without appearance broken string phenomenon, surface colour after copper facing
Pool works well.
Claims (3)
1. a kind of high line exempts from the milling method of pickling steel for welding wire, it is characterised in that：Strand is carried out using high-speed wire production line
Rolling, high-speed wire production line includes heating furnace, rolling zone and air-cooled area；The start rolling temperature of controlled rolling area roughing be 930~
1000 DEG C, it is 900~950 DEG C to enter finishing mill temperature, and laying temperature is 840~860 DEG C；High pressure gas is used between the frame of rolling zone
Body purging rolled piece surface；Control the slow cooling cooling rate≤1 DEG C/s in air-cooled area.
2. high line according to claim 1 exempts from the milling method of pickling steel for welding wire, it is characterised in that：The gases at high pressure
Air pressure be 0.5~0.6Mpa.
3. high line according to claim 1 or 2 exempts from the milling method of pickling steel for welding wire, it is characterised in that：It is described to enter to add
The strand of hot stove is using the steel loading mode for having filled one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710160813.0A CN106944475A (en) | 2017-03-17 | 2017-03-17 | High line exempts from the milling method of pickling steel for welding wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710160813.0A CN106944475A (en) | 2017-03-17 | 2017-03-17 | High line exempts from the milling method of pickling steel for welding wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106944475A true CN106944475A (en) | 2017-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710160813.0A Withdrawn CN106944475A (en) | 2017-03-17 | 2017-03-17 | High line exempts from the milling method of pickling steel for welding wire |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0976002A (en) * | 1995-09-12 | 1997-03-25 | Hitachi Metals Ltd | Method for rolling wire rod |
| CN2595471Y (en) * | 2002-09-30 | 2003-12-31 | 马鞍山钢铁股份有限公司 | Device for rolling wire rod |
| JP3997867B2 (en) * | 2002-09-04 | 2007-10-24 | 住友金属工業株式会社 | Steel wire, method for producing the same, and method for producing steel wire using the steel wire |
| CN101244435A (en) * | 2008-03-21 | 2008-08-20 | 东南大学 | Technique for producing high-carbon steel wire bar |
| CN102218448A (en) * | 2011-06-04 | 2011-10-19 | 首钢总公司 | Production method for optimizing drawing performance of steel wire rod for carbon steel welding wire |
| CN102513725A (en) * | 2011-12-13 | 2012-06-27 | 南京钢铁股份有限公司 | Steel wire rod for annealing-free solder wire and production process thereof |
| CN103276189A (en) * | 2013-06-07 | 2013-09-04 | 鞍钢股份有限公司 | Making method of low-tensile-strength weld wire steel |
| CN104498818A (en) * | 2014-12-22 | 2015-04-08 | 首钢水城钢铁（集团）有限责任公司 | ER70S-6 hot rolled wire rod and preparation method thereof |
| CN205032486U (en) * | 2015-10-20 | 2016-02-17 | 烟台东海科技开发有限公司 | Wet purge system that levels |
-
2017
- 2017-03-17 CN CN201710160813.0A patent/CN106944475A/en not_active Withdrawn
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0976002A (en) * | 1995-09-12 | 1997-03-25 | Hitachi Metals Ltd | Method for rolling wire rod |
| JP3997867B2 (en) * | 2002-09-04 | 2007-10-24 | 住友金属工業株式会社 | Steel wire, method for producing the same, and method for producing steel wire using the steel wire |
| CN2595471Y (en) * | 2002-09-30 | 2003-12-31 | 马鞍山钢铁股份有限公司 | Device for rolling wire rod |
| CN101244435A (en) * | 2008-03-21 | 2008-08-20 | 东南大学 | Technique for producing high-carbon steel wire bar |
| CN102218448A (en) * | 2011-06-04 | 2011-10-19 | 首钢总公司 | Production method for optimizing drawing performance of steel wire rod for carbon steel welding wire |
| CN102513725A (en) * | 2011-12-13 | 2012-06-27 | 南京钢铁股份有限公司 | Steel wire rod for annealing-free solder wire and production process thereof |
| CN103276189A (en) * | 2013-06-07 | 2013-09-04 | 鞍钢股份有限公司 | Making method of low-tensile-strength weld wire steel |
| CN104498818A (en) * | 2014-12-22 | 2015-04-08 | 首钢水城钢铁（集团）有限责任公司 | ER70S-6 hot rolled wire rod and preparation method thereof |
| CN205032486U (en) * | 2015-10-20 | 2016-02-17 | 烟台东海科技开发有限公司 | Wet purge system that levels |
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Application publication date: 20170714 |