CN110340155A - A kind of control production method for exempting from pickling SWRH82B gren rod iron scale - Google Patents
A kind of control production method for exempting from pickling SWRH82B gren rod iron scale Download PDFInfo
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- CN110340155A CN110340155A CN201910594795.6A CN201910594795A CN110340155A CN 110340155 A CN110340155 A CN 110340155A CN 201910594795 A CN201910594795 A CN 201910594795A CN 110340155 A CN110340155 A CN 110340155A
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- Prior art keywords
- control
- pickling
- swrh82b
- iron scale
- exempting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/46—Roll speed or drive motor control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
The present invention relates to technical field of smelting, specially a kind of control production method for exempting from pickling SWRH82B gren rod iron scale, the rolling temperature for controlling wire rod generated by control wire rod scale on surface, Water cooling improve wire rod laying temperature；Roller-way, blower and insulation cover is controlled again to cooperate, adjust wire rod cooling rate, realize that iron scale thickens, improve the stripping performance of wire rod, both met processed user exempts from the requirement of pickling direct drawing technique, the surface treatment cost of wire rod can be reduced again, promote the wire rod adaptation of product and user's low-cost competition power.
Description
Technical field
The present invention relates to technical field of smelting, specially a kind of control for exempting from pickling SWRH82B gren rod iron scale
Production method.
Background technique
SWRH82B wire rod is the important meals raw material for making prestress wire, compressor wire, and manufacture craft is first
By progress drawing processing after handling wire rod surface, then it is fabricated to the twisted wire product of dimension, performance.Wire rod surface
Processing is an extremely important procedure in twisted wire drawing processing, and traditional processing method is to carry out pickling with chemical substance, is removed
Scale on surface and iron rust, this technological operation is simple, easily grasps, and pickling processes quality is stablized.But bring is useless after pickling
" three wastes " processing cost such as acid, waste water, exhaust gas and cost of labor are higher, and cause the environmental issues such as pollution to environment.Using
Environment-friendly type, exempts from pickling SWRH82B gren rod, carries out mechanical bend and peels off+steel brush dephosphorization+online boronation surface treatment work
Skill, not only processing cost is low, and mechanical performance indexs and the acid cleaning process such as tensile strength of wire, bending and torsion drawn out
Without significant difference, the feature of environmental protection of chemical substance treatment is not needed especially, by more and more private twisted wire enterprises and newly-built enterprise
Industry becomes the development trend and developing direction of China's prestress wire industry using promoting.
Summary of the invention
In view of the above shortcomings of the prior art, the present invention provides one kind to exempt from pickling SWRH82B gren rod iron scale
Control production method.
A kind of control production method for exempting from pickling SWRH82B gren rod iron scale, comprising the following steps: rolling temperature
Worn after controlling → rolling water control it is cold → laying temperature control → roller table speed control → blower and air-cooled control；The rolling temperature control
1180 ± 30 DEG C of heating furnace heating temperature in system；1000~1050 DEG C of start rolling temperature；900~930 DEG C of final rolling temperature.
Further, it is described roll after wear water control it is cold in 5 sections wear water tank and be all turned on, uniformly wear water, recovery temperature≤30 DEG C,
End is weak to wear water；
Further, the laying temperature control is 880-920 DEG C；
Further, position occurs for air-cooled line speed 0.5~0.9m/s range in the roller table speed control, phase transformation
0.9m/s, speed 0.5m/s, other speed 0.7m/s in insulation cover.
Further, the blower and Boiler pressure control in air-cooled control are 40-50%, and cooling velocity is 5-6 DEG C/s, enter to protect
Other air-blower control 90-100% air quantity before temperature cover, cooling velocity are 12-13 DEG C/s.
Further, the chemical component percentage for exempting from pickling SWRH82B gren rod are as follows: C:0.78%~
0.83%；Si:0.15%~0.35%；Mn:0.60%~0.90%；P≤0.025%；S≤0.015%；Cr:0.18%~
0.26%, surplus is iron.
Further, the iron scale with a thickness of 10-12 μm.
Further, the weight percent content of FeO is 50-70%, Fe in the iron scale3O4Content is 20-
30%, surplus Fe2O3。
Beneficial effect
The rolling temperature for the control wire rod that the present invention is generated by control wire rod scale on surface, Water cooling, raising
Wire rod laying temperature, control roller table speed, blower and air-cooled control improve wire rod to realize the control to iron scale
Stripping performance, avoids that wire rod scale on surface content is higher to be caused to damage ink marks when drawing, hangs up steel wire surface, reduces profit
The problems such as sliding effect and fracture of wire, product quality is improved, to properties for follow, improving product competitiveness has important meaning
Justice.
Production method of the present invention does not generate spent acid, waste water and exhaust gas, environment friendly and pollution-free, and phase and traditional pickling
SWRH82B gren rod is compared, the mechanical performance indexs such as tensile strength of wire, bending and torsion for drawing out and acid cleaning process without
Significant difference；Not only met processed user exempts from the requirement of pickling direct drawing technique, but also can reduce the surface treatment cost of wire rod, mentions
Rise the wire rod adaptation of product and user's low-cost competition power.
Specific embodiment
Tuberculosis specific embodiment is limited technical solution of the present invention is further below, but claimed
Range is not only limited to made description.
Embodiment 1
A kind of control production method for exempting from pickling SWRH82B gren rod iron scale, comprising the following steps: rolling temperature
Worn after controlling → rolling water control it is cold → laying temperature control → roller table speed control → blower and air-cooled control；The rolling temperature control
1150 DEG C of heating furnace heating temperature in system；1000 DEG C of start rolling temperature；900 DEG C of final rolling temperature；It is described roll after wear water control it is cold in 5 sections wear
Water tank is all turned on, and uniformly wears water, recovery temperature≤30 DEG C, end is weak to wear water；The laying temperature control is 880 DEG C；It is described
Position 0.9m/s occurs for air-cooled line speed 0.5m/s range in roller table speed control, phase transformation, and speed 0.5m/s, other in insulation cover
Speed 0.7m/s；Boiler pressure control is 40% in the blower and air-cooled control, and cooling velocity is 5 DEG C/s, its before entering insulation cover
Its 90% air quantity of air-blower control, cooling velocity are 12 DEG C/s；The chemical component percentage for exempting from pickling SWRH82B gren rod
Are as follows: C:0.78%；Si:0.15%；Mn:0.60%；P:0.005%；S:0.005%；Cr:0.18%, surplus are iron；
The iron scale for exempting from pickling SWRH82B gren rod obtained according to aforementioned production method is with a thickness of 10 μm；Its FeO
Weight percent content be 50%, Fe3O4Content is 20%, surplus Fe2O3。
Embodiment 2
A kind of control production method for exempting from pickling SWRH82B gren rod iron scale, comprising the following steps: rolling temperature
Worn after controlling → rolling water control it is cold → laying temperature control → roller table speed control → blower and air-cooled control；The rolling temperature control
1210 DEG C of heating furnace heating temperature in system；1050 DEG C of start rolling temperature；930 DEG C of final rolling temperature；It is described roll after wear water control it is cold in 5 sections wear
Water tank is all turned on, and uniformly wears water, recovery temperature≤30 DEG C, end is weak to wear water；The laying temperature control is 920 DEG C；It is described
Position 0.9m/s, speed 0.5m/s in insulation cover, other speed occur for air-cooled line speed 0.9m/s in roller table speed control, phase transformation
0.7m/s；Boiler pressure control is 50% in the blower and air-cooled control, and cooling velocity is 6 DEG C/s, other wind before entering insulation cover
Machine controls 100% air quantity, and cooling velocity is 13 DEG C/s；The chemical component percentage for exempting from pickling SWRH82B gren rod are as follows:
C:0.83%；Si:0.35%；Mn:0.90%；P:0.025%；S:0.015%；Cr:0.26%, surplus are iron；
The iron scale for exempting from pickling SWRH82B gren rod obtained according to aforementioned production method is with a thickness of 12 μm；Its FeO
Weight percent content be 70%, Fe3O4Content is 30%, surplus Fe2O3。
Embodiment 3
A kind of control production method for exempting from pickling SWRH82B gren rod iron scale, comprising the following steps: rolling temperature
Worn after controlling → rolling water control it is cold → laying temperature control → roller table speed control → blower and air-cooled control；The rolling temperature control
1180 DEG C of heating furnace heating temperature in system；1025 DEG C of start rolling temperature；920 DEG C of final rolling temperature；It is described roll after wear water control it is cold in 5 sections wear
Water tank is all turned on, and uniformly wears water, recovery temperature≤30 DEG C, end is weak to wear water；The laying temperature control is 900 DEG C；It is described
Position 0.9m/s, speed 0.5m/s in insulation cover, other speed occur for air-cooled line speed 0.7m/s in roller table speed control, phase transformation
0.7m/s；Boiler pressure control is 45% in the blower and air-cooled control, and cooling velocity is 5 DEG C/s, other wind before entering insulation cover
Machine controls 95% air quantity, and cooling velocity is 12.5 DEG C/s；The chemical component percentage for exempting from pickling SWRH82B gren rod
Are as follows: C:0.80%；Si:0.20%；Mn:0.8%；P:0.015%；S:0.010%；Cr:0.22%, surplus are iron；
The iron scale for exempting from pickling SWRH82B gren rod obtained according to aforementioned production method is with a thickness of 11 μm；Its FeO
Weight percent content be 60%, Fe3O4Content is 25%, surplus Fe2O3。
Test example 1
Use section for 160 × 160mm2Exempt from slab used in pickling SWRH82B gren rod, chemical component such as following table
Shown in 1:
Table 1
By the different slab of above-mentioned 1-6 group chemical component, using the production method of the method for the present invention respectively at it
Reason, measurement spinning, each blower cooling section and insulation cover inlet temperature, measured value are shown in Table 2；
Table 2
Thickness, ingredient and the performance of the iron scale for exempting from pickling SWRH82B gren rod rolling to above-mentioned 1-6 group
It is measured, the results are shown in Table 3；
Table 3
By 3 test data of table it is found that can not only effectively control iron scale by using production method of the invention
Thickness, while also ensuring good mechanical property, it ensure that the quality of product, avoid and give up using brought by traditional pickling
" three wastes " processing cost such as acid, waste water, exhaust gas and defect with high labor costs.
It is important to point out that, above embodiments and test example are only limitted to do further technical solution of the present invention herein
Elaboration and understanding, should not be understood as it is further to technical solution of the present invention limited, what those skilled in the art made
The innovation and creation of non-protruding essential characteristics and marked improvement still fall within protection category of the invention.
Claims (8)
1. a kind of control production method for exempting from pickling SWRH82B gren rod iron scale, which is characterized in that including following step
It is rapid: rolling temperature worn after controlling → rolling water control it is cold → laying temperature control → roller table speed control → blower and air-cooled control；Institute
State 1180 ± 30 DEG C of heating furnace heating temperature in rolling temperature control；1000~1050 DEG C of start rolling temperature；Final rolling temperature 900~
930℃。
2. exempting from the control production method of pickling SWRH82B gren rod iron scale as described in claim 1, which is characterized in that
It is described roll after wear water control it is cold in 5 sections wear water tank and be all turned on, uniformly wear water, recovery temperature≤30 DEG C, end is weak to wear water.
3. exempting from the control production method of pickling SWRH82B gren rod iron scale as described in claim 1, which is characterized in that
The laying temperature control is 880-920 DEG C；
4. exempting from the control production method of pickling SWRH82B gren rod iron scale as described in claim 1, which is characterized in that
Position 0.9m/s, speed in insulation cover occur for air-cooled line speed 0.5~0.9m/s range in the roller table speed control, phase transformation
0.5m/s, other speed 0.7m/s.
5. exempting from the control production method of pickling SWRH82B gren rod iron scale as described in claim 1, which is characterized in that
Boiler pressure control is 40-50% in the blower and air-cooled control, and cooling velocity is 5-6 DEG C/s, other blowers before entering insulation cover
90-100% air quantity is controlled, cooling velocity is 12-13 DEG C/s.
6. exempting from the control production method of pickling SWRH82B gren rod iron scale as described in right 1, which is characterized in that described
Exempt from the chemical component percentage of pickling SWRH82B gren rod are as follows: C:0.78%~0.83%；Si:0.15%~0.35%；
Mn:0.60%~0.90%；P≤0.025%；S≤0.015%；Cr:0.18%~0.26%, surplus are iron.
7. exempting from the control production method of pickling SWRH82B gren rod iron scale as described in claim 1, which is characterized in that
The iron scale with a thickness of 10-12 μm.
8. exempting from the control production method of pickling SWRH82B gren rod iron scale as described in claim 1 or 7, feature exists
In the weight percent content of FeO is 50-70%, Fe in the iron scale3O4Weight percent content be 20-30%,
Surplus is Fe2O3。
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| CN201910594795.6A CN110340155A (en) | 2019-07-03 | 2019-07-03 | A kind of control production method for exempting from pickling SWRH82B gren rod iron scale |
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| CN201910594795.6A CN110340155A (en) | 2019-07-03 | 2019-07-03 | A kind of control production method for exempting from pickling SWRH82B gren rod iron scale |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111172469A (en) * | 2020-01-08 | 2020-05-19 | 柳州钢铁股份有限公司 | SWRH82B wire rod with low acid-soluble aluminum content |
| CN111206177A (en) * | 2020-01-08 | 2020-05-29 | 柳州钢铁股份有限公司 | Production method of SWRH82B steel with low acid-soluble aluminum content |
| CN113414236A (en) * | 2021-06-24 | 2021-09-21 | 江苏永钢集团有限公司 | Control method for improving mechanical stripping rate of scale of 80-grade cord steel |
| CN113843299A (en) * | 2021-09-28 | 2021-12-28 | 江苏永钢集团有限公司 | Production method of pickling-free high-carbon chromium bearing steel wire rod after spheroidizing annealing |
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| JPS6171105A (en) * | 1984-09-14 | 1986-04-12 | Nippon Steel Corp | Hot rolling method |
| CN1189400A (en) * | 1998-02-23 | 1998-08-05 | 冶金工业部钢铁研究总院 | Cooling control method used for steels after hot rolled |
| CN205027733U (en) * | 2015-10-15 | 2016-02-10 | 江苏兴达钢帘线股份有限公司 | Effect analysis appearance is peeled off to wire rod forge scale |
| CN107695095A (en) * | 2017-11-12 | 2018-02-16 | 湖南华菱湘潭钢铁有限公司 | The production method of environment-friendly type high-carbon wire rod iron scale |
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2019
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6171105A (en) * | 1984-09-14 | 1986-04-12 | Nippon Steel Corp | Hot rolling method |
| CN1189400A (en) * | 1998-02-23 | 1998-08-05 | 冶金工业部钢铁研究总院 | Cooling control method used for steels after hot rolled |
| CN205027733U (en) * | 2015-10-15 | 2016-02-10 | 江苏兴达钢帘线股份有限公司 | Effect analysis appearance is peeled off to wire rod forge scale |
| CN107695095A (en) * | 2017-11-12 | 2018-02-16 | 湖南华菱湘潭钢铁有限公司 | The production method of environment-friendly type high-carbon wire rod iron scale |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111172469A (en) * | 2020-01-08 | 2020-05-19 | 柳州钢铁股份有限公司 | SWRH82B wire rod with low acid-soluble aluminum content |
| CN111206177A (en) * | 2020-01-08 | 2020-05-29 | 柳州钢铁股份有限公司 | Production method of SWRH82B steel with low acid-soluble aluminum content |
| CN111206177B (en) * | 2020-01-08 | 2021-11-12 | 柳州钢铁股份有限公司 | Production method of SWRH82B steel with low acid-soluble aluminum content |
| CN111172469B (en) * | 2020-01-08 | 2021-11-12 | 柳州钢铁股份有限公司 | SWRH82B wire rod with low acid-soluble aluminum content |
| CN113414236A (en) * | 2021-06-24 | 2021-09-21 | 江苏永钢集团有限公司 | Control method for improving mechanical stripping rate of scale of 80-grade cord steel |
| CN113414236B (en) * | 2021-06-24 | 2022-07-12 | 江苏永钢集团有限公司 | Control method for improving mechanical stripping rate of scale of 80-grade cord steel |
| CN113843299A (en) * | 2021-09-28 | 2021-12-28 | 江苏永钢集团有限公司 | Production method of pickling-free high-carbon chromium bearing steel wire rod after spheroidizing annealing |
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