CN111910062A - One-step steel wire hot drawing process - Google Patents
One-step steel wire hot drawing process Download PDFInfo
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- CN111910062A CN111910062A CN202010816484.2A CN202010816484A CN111910062A CN 111910062 A CN111910062 A CN 111910062A CN 202010816484 A CN202010816484 A CN 202010816484A CN 111910062 A CN111910062 A CN 111910062A
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- wire
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- steel wire
- die
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D7/00—Modifying the physical properties of iron or steel by deformation
- C21D7/13—Modifying the physical properties of iron or steel by deformation by hot working
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/005—Heat treatment of ferrous alloys containing Mn
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/008—Heat treatment of ferrous alloys containing Si
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/06—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires
- C21D8/065—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires of ferrous alloys
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
- C22C33/06—Making ferrous alloys by melting using master alloys
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
The invention discloses a one-step steel wire hot drawing process, which comprises the following steps: s1 smelting: putting steel quicklime, silicon with the concentration of 99% and foundry returns into a vacuum induction furnace for melting treatment, heating to 1220-1250 ℃, and preserving heat until the solid is completely melted to obtain a melt; s3, adding ferrosilicon and the rest electrolytic manganese into the obtained solution to perform deoxidation and desulfurization treatment to obtain a mixed solution; s3, carrying out vacuum bottom casting on the obtained mixed solution at the temperature lower than 1500 ℃, removing a casting riser after the cast ingot is cooled, and cleaning the surface of the cast ingot; s4 is put into a resistance heating furnace for heating, the heating temperature is 950 ℃ and 965 ℃, and the heat preservation time is 60-90 min. The invention overcomes the defect of poor processability of the high-silicon steel, successfully adopts the traditional wire drawing process to prepare the high-silicon steel wire, greatly reduces the manufacturing cost, enables the batch production to be possible, improves the internal structure of the steel wire and ensures the excellence of the final product.
Description
Technical Field
The invention relates to the technical field of steel wire hot drawing, in particular to a one-step steel wire hot drawing process.
Background
Silicon steel is an excellent soft magnetic material and is widely used for motors, transformers and the like. When the silicon content in the silicon steel exceeds 3.5% (by weight, the same applies hereinafter), it is referred to as high silicon steel. With the increase of the silicon content, the Fe-Si alloy has the characteristics of increasing the resistivity, increasing the maximum magnetic conductivity and reducing the iron loss. At the same time, however, as the silicon content increases, particularly beyond 3.5%, the material becomes hard and brittle and has essentially zero plasticity at room temperature. It is difficult to obtain a high silicon steel sheet by the conventional method. With the development of the manufacturing process, various special manufacturing processes, such as chemical vapor deposition and rapid solidification, have been developed to avoid the low temperature brittleness and to manufacture alloy sheets. Chemical vapor deposition is to obtain high-silicon steel by siliconizing a common silicon steel sheet and then carrying out homogenization heat treatment.
The traditional rolling process is still immature at present, the problems of temperature control, curling and the like exist in the rolling process, and due to brittleness, the wire drawing operation of the steel wire is complex, and the strength is not enough.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides a one-step steel wire hot drawing process.
The one-step steel wire hot drawing process includes the following steps:
s1 smelting: putting steel quicklime, silicon with the concentration of 99% and foundry returns into a vacuum induction furnace for melting treatment, heating to 1220-1250 ℃, and preserving heat until the solid is completely melted to obtain a melt;
s3, adding ferrosilicon and the rest electrolytic manganese into the obtained solution to perform deoxidation and desulfurization treatment to obtain a mixed solution;
s3, carrying out vacuum bottom casting on the obtained mixed solution at the temperature lower than 1500 ℃, removing a casting riser after the cast ingot is cooled, and cleaning the surface of the cast ingot;
s4 is put into a resistance heating furnace for heating, the heating temperature is 950-;
s5, performing die forging treatment under a die to obtain a bar with the diameter of 12mm-15mm, wherein the die forging temperature is controlled at 800-1100 ℃;
s6, performing hot rotary swaging treatment on the bar at the temperature of 850-950 ℃, wherein rotary swaging passes are 10-20 times, the feeding amount of each pass is 0.5-1 mm, performing tempering once after each pass, and finally forging the wire rod with the diameter of 5-10 mm;
s7, performing heat treatment on the wire rod subjected to rotary swaging, wherein the heat treatment temperature is set to be 750-850 ℃, performing heat preservation for 1.5h, and finally cooling with brine;
s8, removing surface iron oxide scale by adopting an acid pickling process, and carrying out phosphating and saponification treatment in time after acid pickling;
s9, passing the wire through an induction heating coil, and heating the wire by the coil until the temperature of the wire rod reaches 500-700 ℃;
s10 the wire passes through the wire drawing mechanism, the wire passes through the die arranged on the wire drawing mechanism and then rapidly passes through the cooling water in the cooling mechanism, and finally the steel wire with the diameter of 1.0mm-1.6mm is prepared.
In the invention, the heat preservation in the step S1 adopts a heat preservation furnace, the temperature of the heat preservation furnace is 1220-1240 ℃, and the surface of the melt in the heat preservation furnace is covered with a covering layer formed by high-purity graphite carbon powder.
In the present invention, the step S1 uses an environment with a vacuum pressure of 2 × 10-2-3 × 10-2 Pa.
In the invention, inert gas is introduced into the mixed solution in the step S3, and simultaneously antioxidant is added, and then the temperature is raised to 1500-.
In the invention, the steel wire in the step S10 needs to be thermally annealed, wherein the thermal annealing temperature is 350-400 ℃, the time is about 15-25 minutes, the annealed steel wire is cleaned for three times by deionized water, and then dried at 65 ℃ to obtain the finished product.
According to the invention, the wire drawing mechanism is provided with the wire drawing die box, the wire drawing die box is divided into two chambers, one chamber is used for mounting the wire drawing die, the other chamber is used for collecting wastes, the wire drawing die is a hard alloy die, and when the surface quality of raw materials is poor, the polycrystalline die can be used for production.
In the present invention, the temperature of the cooling water in the cooling mechanism of step S10 is maintained at 0 ± 2 ℃ throughout the year, and the temperature of the cooling water is adjusted by an outdoor cooling unit.
In the invention, the low-temperature cooling mode is liquid nitrogen cooling or dry ice cooling.
According to the invention, the one-step steel wire hot-drawing process overcomes the defect of poor processability of high-silicon steel, successfully adopts the traditional wire-drawing process to prepare the high-silicon steel wire, greatly reduces the manufacturing cost, enables batch production to be possible, improves the internal structure of the steel wire and ensures the excellent quality of the final product.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments.
The one-step steel wire hot drawing process includes the following steps:
s1 smelting: putting steel quicklime, silicon with the concentration of 99% and foundry returns into a vacuum induction furnace for melting treatment, heating to 1220-1250 ℃, and preserving heat until the solid is completely melted to obtain a melt;
s3, adding ferrosilicon and the rest electrolytic manganese into the obtained solution to perform deoxidation and desulfurization treatment to obtain a mixed solution;
s3, carrying out vacuum bottom casting on the obtained mixed solution at the temperature lower than 1500 ℃, removing a casting riser after the cast ingot is cooled, and cleaning the surface of the cast ingot;
s4 is put into a resistance heating furnace for heating, the heating temperature is 950-;
s5, performing die forging treatment under a die to obtain a bar with the diameter of 12mm-15mm, wherein the die forging temperature is controlled at 800-1100 ℃;
s6, performing hot rotary swaging treatment on the bar at the temperature of 850-950 ℃, wherein rotary swaging passes are 10-20 times, the feeding amount of each pass is 0.5-1 mm, performing tempering once after each pass, and finally forging the wire rod with the diameter of 5-10 mm;
s7, performing heat treatment on the wire rod subjected to rotary swaging, wherein the heat treatment temperature is set to be 750-850 ℃, performing heat preservation for 1.5h, and finally cooling with brine;
s8, removing surface iron oxide scale by adopting an acid pickling process, and carrying out phosphating and saponification treatment in time after acid pickling;
s9, passing the wire through an induction heating coil, and heating the wire by the coil until the temperature of the wire rod reaches 500-700 ℃;
s10 the wire passes through the wire drawing mechanism, the wire passes through the die arranged on the wire drawing mechanism and then rapidly passes through the cooling water in the cooling mechanism, and finally the steel wire with the diameter of 1.0mm-1.6mm is prepared.
In the invention, the heat preservation in the step S1 adopts a heat preservation furnace, the temperature of the heat preservation furnace is 1220-1240 ℃, and the surface of the melt in the heat preservation furnace is covered with a covering layer formed by high-purity graphite carbon powder.
In the present invention, the step S1 uses an environment with a vacuum pressure of 2 × 10-2-3 × 10-2 Pa.
In the invention, inert gas is introduced into the mixed solution in the step S3, and simultaneously antioxidant is added, and then the temperature is raised to 1500-.
In the invention, the steel wire in the step S10 needs to be thermally annealed, wherein the thermal annealing temperature is 350-400 ℃, the time is about 15-25 minutes, the annealed steel wire is cleaned for three times by deionized water, and then dried at 65 ℃ to obtain the finished product.
According to the invention, the wire drawing mechanism is provided with the wire drawing die box, the wire drawing die box is divided into two chambers, one chamber is used for mounting the wire drawing die, the other chamber is used for collecting wastes, the wire drawing die is a hard alloy die, and when the surface quality of raw materials is poor, the polycrystalline die can be used for production.
In the present invention, the temperature of the cooling water in the cooling mechanism of step S10 is maintained at 0 ± 2 ℃ throughout the year, and the temperature of the cooling water is adjusted by an outdoor cooling unit.
In the invention, the low-temperature cooling mode is liquid nitrogen cooling or dry ice cooling.
The invention comprises the following steps: smelting: putting steel quicklime, silicon with the concentration of 99% and foundry returns into a vacuum induction furnace for melting treatment, heating to 1220-1250 ℃, and preserving heat until the solid is completely melted to obtain a melt; adding ferrosilicon and the rest electrolytic manganese into the obtained solution for deoxidation and desulfurization treatment to obtain a mixed solution; then carrying out vacuum bottom casting on the obtained mixed solution under the vacuum condition of being lower than 1500 ℃, removing a casting riser after the cast ingot is cooled, and cleaning the surface of the cast ingot; heating in a resistance heating furnace at 950-; performing die forging treatment under a die to obtain a bar with the diameter of 12mm-15mm by forging, wherein the die forging temperature is controlled at 800-1100 ℃; performing hot rotary swaging treatment on the bar at the temperature of 850-950 ℃, wherein the rotary swaging passes are 10-20 times, the feeding amount of each pass is 0.5-1 mm, performing tempering once after each pass, and finally forging the wire rod with the diameter of 5-10 mm; carrying out heat treatment on the wire rod subjected to rotary swaging, wherein the heat treatment temperature is set to be between 750 and 850 ℃, preserving heat for 1.5h, and finally cooling with brine; removing surface iron oxide scales by adopting an acid pickling process, and timely carrying out phosphating and saponification treatment after acid pickling; the wire rod penetrates through an induction heating coil, and the temperature of the wire rod reaches 500-700 ℃ through the heating of the coil; the wire rod passes through the wire drawing mechanism, and after passing through a die arranged on the wire drawing mechanism, the wire rod rapidly passes through cooling water in the cooling mechanism, and finally the wire rod with the diameter of 1.0mm-1.6mm is prepared.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. The one-step steel wire hot drawing process is characterized by comprising the following steps of:
s1 smelting: putting steel quicklime, silicon with the concentration of 99% and foundry returns into a vacuum induction furnace for melting treatment, heating to 1220-1250 ℃, and preserving heat until the solid is completely melted to obtain a melt;
s3, adding ferrosilicon and the rest electrolytic manganese into the obtained solution to perform deoxidation and desulfurization treatment to obtain a mixed solution;
s3, carrying out vacuum bottom casting on the obtained mixed solution at the temperature lower than 1500 ℃, removing a casting riser after the cast ingot is cooled, and cleaning the surface of the cast ingot;
s4 is put into a resistance heating furnace for heating, the heating temperature is 950-;
s5, performing die forging treatment under a die to obtain a bar with the diameter of 12mm-15mm, wherein the die forging temperature is controlled at 800-1100 ℃;
s6, performing hot rotary swaging treatment on the bar at the temperature of 850-950 ℃, wherein rotary swaging passes are 10-20 times, the feeding amount of each pass is 0.5-1 mm, performing tempering once after each pass, and finally forging the wire rod with the diameter of 5-10 mm;
s7, performing heat treatment on the wire rod subjected to rotary swaging, wherein the heat treatment temperature is set to be 750-850 ℃, performing heat preservation for 1.5h, and finally cooling with brine;
s8, removing surface iron oxide scale by adopting an acid pickling process, and carrying out phosphating and saponification treatment in time after acid pickling;
s9, passing the wire through an induction heating coil, and heating the wire by the coil until the temperature of the wire rod reaches 500-700 ℃;
s10 the wire passes through the wire drawing mechanism, the wire passes through the die arranged on the wire drawing mechanism and then rapidly passes through the cooling water in the cooling mechanism, and finally the steel wire with the diameter of 1.0mm-1.6mm is prepared.
2. The one-step steel wire hot drawing process as claimed in claim 1, wherein the step S1 is performed by using a holding furnace, the temperature of the holding furnace is 1220-1240 ℃, and the surface of the melt in the holding furnace is covered with a covering layer formed by high-purity graphite carbon powder.
3. The one-step steel wire hot drawing process according to claim 1, wherein the step S1 adopts an environment with a vacuum pressure of 2 × 10 "2-3 × 10" 2 Pa.
4. The one-step steel wire hot drawing process according to claim 1, wherein the inert gas is introduced into the mixed solution in the step S3, the antioxidant is added, and the temperature is raised to 1500-.
5. The one-step steel wire hot drawing process as claimed in claim 1, wherein the steel wire of step S10 is required to be thermally annealed at a temperature of 350-.
6. The one-step steel wire hot drawing process according to claim 1, wherein the wire drawing mechanism is provided with a wire drawing die box, the wire drawing die box is divided into two chambers, one is used for installing a drawing die, the other is used for collecting waste, the wire drawing die is a hard alloy die, and when the surface quality of raw materials is poor, the polycrystalline die can be used for production.
7. The one-step steel wire hot drawing process according to claim 1, wherein the temperature of the cooling water in the cooling mechanism of the step S10 is kept at 0 ± 2 ℃ throughout the year, and the temperature of the cooling water is adjusted by an outdoor cooling unit.
8. The one-step steel wire hot drawing process according to claim 1, wherein the low-temperature cooling is liquid nitrogen cooling or dry ice cooling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010816484.2A CN111910062A (en) | 2020-08-14 | 2020-08-14 | One-step steel wire hot drawing process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010816484.2A CN111910062A (en) | 2020-08-14 | 2020-08-14 | One-step steel wire hot drawing process |
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| CN111910062A true CN111910062A (en) | 2020-11-10 |
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| CN202010816484.2A Pending CN111910062A (en) | 2020-08-14 | 2020-08-14 | One-step steel wire hot drawing process |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112718894A (en) * | 2020-11-23 | 2021-04-30 | 山东焱鑫矿用材料加工有限公司 | Novel production process for full-length cemented anchor cable body |
| CN114798720A (en) * | 2022-04-04 | 2022-07-29 | 新疆八一钢铁股份有限公司 | Hot-drawing type rolling method |
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| CN103160731A (en) * | 2013-03-28 | 2013-06-19 | 江苏神王集团有限公司 | Hot drawing high-silicon steel wire and production method thereof |
| CN105522128A (en) * | 2015-12-16 | 2016-04-27 | 北京科技大学 | Method for preparing high silicon steel wire through short technological process |
| CN106363019A (en) * | 2016-10-18 | 2017-02-01 | 北京科技大学 | Rolling technology of high silicon steel bar |
| CN108246828A (en) * | 2018-01-03 | 2018-07-06 | 北京科技大学 | A kind of method that electric plastic pulling method prepares high silicon steel silk material |
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2020
- 2020-08-14 CN CN202010816484.2A patent/CN111910062A/en active Pending
Patent Citations (4)
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| CN105522128A (en) * | 2015-12-16 | 2016-04-27 | 北京科技大学 | Method for preparing high silicon steel wire through short technological process |
| CN106363019A (en) * | 2016-10-18 | 2017-02-01 | 北京科技大学 | Rolling technology of high silicon steel bar |
| CN108246828A (en) * | 2018-01-03 | 2018-07-06 | 北京科技大学 | A kind of method that electric plastic pulling method prepares high silicon steel silk material |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112718894A (en) * | 2020-11-23 | 2021-04-30 | 山东焱鑫矿用材料加工有限公司 | Novel production process for full-length cemented anchor cable body |
| CN114798720A (en) * | 2022-04-04 | 2022-07-29 | 新疆八一钢铁股份有限公司 | Hot-drawing type rolling method |
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Application publication date: 20201110 |