CN112359169A - Manufacturing method of high-strength wire - Google Patents
Manufacturing method of high-strength wire Download PDFInfo
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- CN112359169A CN112359169A CN202011363943.2A CN202011363943A CN112359169A CN 112359169 A CN112359169 A CN 112359169A CN 202011363943 A CN202011363943 A CN 202011363943A CN 112359169 A CN112359169 A CN 112359169A
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/52—Manufacture of steel in electric furnaces
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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
- 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
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/006—Making ferrous alloys compositions used for making 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
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/52—Ferrous alloys, e.g. steel alloys containing chromium with nickel with cobalt
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/60—Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur
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- 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)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
The invention discloses a manufacturing method of a high-strength wire rod, which comprises the following steps: A. putting the scrap steel into an electric furnace to smelt into steel melt, and blowing out solid waste slag under the anaerobic condition to obtain pure steel melt; B. and sequentially adding auxiliary materials into the obtained steel melt, and blowing out the non-molten slag under an anaerobic condition after the steel melt is melted into liquid to obtain mixed melt. The invention adopts the scrap steel as the raw material, can effectively improve the recovery rate of the waste metal, reduces the consumption of non-renewable resources, meets the national requirements of energy conservation and emission reduction, has wide sources of the scrap steel, adopts the electric furnace for direct smelting, can be melted into liquid without overhigh temperature and overlong time, reduces the energy consumption such as electric energy and the like, reduces the production cost of the wire rod, adds the auxiliary materials, can effectively improve the strength of the wire rod, thereby expanding the market competitiveness of the wire rod and meeting the benefits of enterprises.
Description
Technical Field
The invention relates to the technical field of wires, in particular to a manufacturing method of a high-strength wire.
Background
The wire rod is one of hot rolled section steel with the smallest section size, is called wire rod by eight specifications of coiled hot rolled round steel with the common diameter of 5-9mm in China, is called wire rod because the wire rod is delivered by coiling, is also called wire rod, and is different according to steel distribution catalogue and application, the wire rod comprises common low-carbon steel hot rolled circular rod, high-quality carbon steel wire rod, carbon welding rod wire rod, quenched and tempered threaded wire rod, wire rod for manufacturing steel wire rope, wire rod for piano steel wire, stainless steel wire rod and the like, but the existing wire rod has lower integral strength, thereby reducing the service life and market competitiveness of the existing wire rod, and not meeting the benefits of enterprises.
Disclosure of Invention
The present invention is directed to a method for manufacturing a high-strength wire rod, so as to solve the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: a manufacturing method of a high-strength wire rod comprises the following steps:
A. putting the scrap steel into an electric furnace to smelt into steel melt, and blowing out solid waste slag under the anaerobic condition to obtain pure steel melt;
B. sequentially adding auxiliary materials into the obtained steel melt, and blowing out the non-molten slag under an anaerobic condition after the steel melt is melted into liquid to obtain mixed melt;
C. putting the mixed molten liquid into a forming groove for cooling and forming treatment to obtain a blank;
D. continuously passing the blank through a heating ring and a cooling water ring by using a high-medium frequency induction heating furnace, and heating the blank to be more than Ac1 to austenitize;
E. tempering the blank at 350-600 ℃, and applying tension to the blank by using a tension mechanism during tempering;
F. and (4) obtaining a high-strength line after water spraying and cooling treatment, and rolling the high-strength line into a coil by adopting a rolling mechanism.
Preferably, the scrap steel in the step A is composed of low carbon steel, medium carbon steel, high carbon steel alloy steel, low alloy steel, medium alloy steel and high alloy steel, and the components in parts by weight are as follows: 10-20 parts of low-carbon steel; 7-12 parts of medium carbon steel; 6-11 parts of high-carbon steel alloy steel; 8-15 parts of low alloy steel; 10-18 parts of medium alloy steel; 3-8 parts of high alloy steel.
Preferably, the auxiliary materials in the step B comprise arsenic, bismuth, chromium, cobalt, hafnium, indium, molybdenum, manganese, niobium, nickel, platinum, selenium, zinc and aluminum, and the components in parts by weight are as follows: 2-6 parts of arsenic; 1-4 parts of bismuth; 3-8 parts of chromium; 2-5 parts of cobalt; 1-3 parts of hafnium; 2-7 parts of indium; 7-12 parts of molybdenum; 6-10 parts of manganese; 2-5 parts of niobium; 10-15 parts of nickel; 4-10 parts of platinum; 3-8 parts of selenium; 4-8 parts of zinc; 6-12 parts of aluminum.
Preferably, the tensile mechanism in step E includes a jacket, a clamping plate, fastening screws, a hydraulic rod, a first support rod, a second support rod, a support, a sliding seat and a slide rod, and the first support rod is fixedly connected to the top of the support, the hydraulic rod is fixedly connected to the top of one side of the first support rod, the output end of the hydraulic rod is movably connected to the jacket through the second support rod of the "L" shape, the inner side of the jacket is fixedly connected to the clamping plate, the top of the jacket is in threaded connection with the fastening screws on the outer side of the clamping plate, and meanwhile, the output ends of the second support rod and the hydraulic rod are fixedly connected to the slide rod, the bottom of the slide rod is slidably connected to the inner surface of the sliding seat, and the sliding seat.
Preferably, winding mechanism includes workstation, motor, rolling dish, first guide roll and second guide roll, and rolling dish, first guide roll and second guide roll all pass through bearing swing joint in the top of workstation, and first guide roll is located the intermediate position of rolling dish and second guide roll, and simultaneously, motor fixed mounting is close to one side of rolling dish in the workstation top, and the output shaft of motor passes through the belt and is connected with the transmission of rolling dish.
Compared with the prior art, the invention has the following beneficial effects:
the invention adopts the scrap steel as the raw material, can effectively improve the recovery rate of the waste metal, reduces the consumption of non-renewable resources, meets the national requirements of energy conservation and emission reduction, has wide sources of the scrap steel, adopts the electric furnace for direct smelting, can be melted into liquid without overhigh temperature and overlong time, reduces the energy consumption such as electric energy and the like, reduces the production cost of the wire rod, adds the auxiliary materials, can effectively improve the strength of the wire rod, thereby expanding the market competitiveness of the wire rod and meeting the benefits of enterprises.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A manufacturing method of a high-strength wire rod comprises the following steps:
A. putting the scrap steel into an electric furnace to smelt into steel melt, and blowing out solid waste slag under the anaerobic condition to obtain pure steel melt;
B. sequentially adding auxiliary materials into the obtained steel melt, and blowing out the non-molten slag under an anaerobic condition after the steel melt is melted into liquid to obtain mixed melt;
C. putting the mixed molten liquid into a forming groove for cooling and forming treatment to obtain a blank;
D. continuously passing the blank through a heating ring and a cooling water ring by using a high-medium frequency induction heating furnace, and heating the blank to be more than Ac1 to austenitize;
E. tempering the blank at 350-600 ℃, and applying tension to the blank by using a tension mechanism during tempering;
F. and (4) obtaining a high-strength line after water spraying and cooling treatment, and rolling the high-strength line into a coil by adopting a rolling mechanism.
The scrap steel is used as a raw material, the recycling rate of waste metals can be effectively improved, the consumption of non-renewable resources is reduced, the national energy-saving and emission-reduction requirements are met, the scrap steel is wide in source, the electric furnace is directly adopted for smelting, the scrap steel can be melted into a liquid state without overhigh temperature and overlong time, the energy consumption such as electric energy and the like is reduced, the production cost of the wire rod is reduced, auxiliary materials are added, the strength of the wire rod can be effectively improved, the market competitiveness of the wire rod is expanded, and the benefit of enterprises is met.
The first embodiment is as follows:
a manufacturing method of a high-strength wire rod comprises the following steps:
A. the method comprises the following steps of smelting the waste steel into steel molten liquid in an electric furnace, and blowing out solid waste slag under an anaerobic condition to obtain pure steel molten liquid, wherein the waste steel consists of low-carbon steel, medium-carbon steel, high-carbon steel alloy steel, low-alloy steel, medium-alloy steel and high-alloy steel, and the steel comprises the following components in parts by weight: 10-20 parts of low-carbon steel; 7-12 parts of medium carbon steel; 6-11 parts of high-carbon steel alloy steel; 8-15 parts of low alloy steel; 10-18 parts of medium alloy steel; 3-8 parts of high alloy steel;
B. sequentially adding auxiliary materials into the obtained steel melt, and blowing out the non-molten slag under an anaerobic condition after the steel melt is melted into liquid to obtain mixed melt;
C. putting the mixed molten liquid into a forming groove for cooling and forming treatment to obtain a blank;
D. continuously passing the blank through a heating ring and a cooling water ring by using a high-medium frequency induction heating furnace, and heating the blank to be more than Ac1 to austenitize;
E. tempering the blank at 350-600 ℃, and applying tension to the blank by using a tension mechanism during tempering;
F. and (4) obtaining a high-strength line after water spraying and cooling treatment, and rolling the high-strength line into a coil by adopting a rolling mechanism.
Example two:
a manufacturing method of a high-strength wire rod comprises the following steps:
A. putting the scrap steel into an electric furnace to smelt into steel melt, and blowing out solid waste slag under the anaerobic condition to obtain pure steel melt;
B. adding auxiliary materials into the obtained steel melt in sequence, and blowing out the non-molten slag under an anaerobic condition after the non-molten slag is melted into liquid to obtain mixed melt, wherein the auxiliary materials comprise arsenic, bismuth, chromium, cobalt, hafnium, indium, molybdenum, manganese, niobium, nickel, platinum, selenium, zinc and aluminum, and the auxiliary materials comprise the following components in parts by weight: 2-6 parts of arsenic; 1-4 parts of bismuth; 3-8 parts of chromium; 2-5 parts of cobalt; 1-3 parts of hafnium; 2-7 parts of indium; 7-12 parts of molybdenum; 6-10 parts of manganese; 2-5 parts of niobium; 10-15 parts of nickel; 4-10 parts of platinum; 3-8 parts of selenium; 4-8 parts of zinc; 6-12 parts of aluminum;
C. putting the mixed molten liquid into a forming groove for cooling and forming treatment to obtain a blank;
D. continuously passing the blank through a heating ring and a cooling water ring by using a high-medium frequency induction heating furnace, and heating the blank to be more than Ac1 to austenitize;
E. tempering the blank at 350-600 ℃, and applying tension to the blank by using a tension mechanism during tempering;
F. and (4) obtaining a high-strength line after water spraying and cooling treatment, and rolling the high-strength line into a coil by adopting a rolling mechanism.
Example three:
a manufacturing method of a high-strength wire rod comprises the following steps:
A. putting the scrap steel into an electric furnace to smelt into steel melt, and blowing out solid waste slag under the anaerobic condition to obtain pure steel melt;
B. sequentially adding auxiliary materials into the obtained steel melt, and blowing out the non-molten slag under an anaerobic condition after the steel melt is melted into liquid to obtain mixed melt;
C. putting the mixed molten liquid into a forming groove for cooling and forming treatment to obtain a blank;
D. continuously passing the blank through a heating ring and a cooling water ring by using a high-medium frequency induction heating furnace, and heating the blank to be more than Ac1 to austenitize;
E. tempering the blank at the tempering temperature of 350-;
F. and (4) obtaining a high-strength line after water spraying and cooling treatment, and rolling the high-strength line into a coil by adopting a rolling mechanism.
Example four:
a manufacturing method of a high-strength wire rod comprises the following steps:
A. putting the scrap steel into an electric furnace to smelt into steel melt, and blowing out solid waste slag under the anaerobic condition to obtain pure steel melt;
B. sequentially adding auxiliary materials into the obtained steel melt, and blowing out the non-molten slag under an anaerobic condition after the steel melt is melted into liquid to obtain mixed melt;
C. putting the mixed molten liquid into a forming groove for cooling and forming treatment to obtain a blank;
D. continuously passing the blank through a heating ring and a cooling water ring by using a high-medium frequency induction heating furnace, and heating the blank to be more than Ac1 to austenitize;
E. tempering the blank at 350-600 ℃, and applying tension to the blank by using a tension mechanism during tempering;
F. obtain high strength lines after the water spray cooling handles, and adopt winding mechanism rolling lapping, winding mechanism includes the workstation, including a motor, an end cap, a controller, and a cover plate, wind-up reel, first guide roll and second guide roll, and wind-up reel, first guide roll and second guide roll all pass through bearing swing joint in the top of workstation, first guide roll is located the intermediate position of wind-up reel and second guide roll, and simultaneously, motor fixed mounting is in one side that the workstation top is close to the wind-up reel, and the output shaft of motor passes through the belt and is connected with the transmission of wind-up reel.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. A manufacturing method of a high-strength wire rod is characterized by comprising the following steps: the manufacturing method comprises the following steps:
A. putting the scrap steel into an electric furnace to smelt into steel melt, and blowing out solid waste slag under the anaerobic condition to obtain pure steel melt;
B. sequentially adding auxiliary materials into the obtained steel melt, and blowing out the non-molten slag under an anaerobic condition after the steel melt is melted into liquid to obtain mixed melt;
C. putting the mixed molten liquid into a forming groove for cooling and forming treatment to obtain a blank;
D. continuously passing the blank through a heating ring and a cooling water ring by using a high-medium frequency induction heating furnace, and heating the blank to be more than Ac1 to austenitize;
E. tempering the blank at 350-600 ℃, and applying tension to the blank by using a tension mechanism during tempering;
F. and (4) obtaining a high-strength line after water spraying and cooling treatment, and rolling the high-strength line into a coil by adopting a rolling mechanism.
2. The method for manufacturing a high-strength wire rod according to claim 1, wherein: the scrap steel in the step A is composed of low-carbon steel, medium-carbon steel, high-carbon steel alloy steel, low-alloy steel, medium-alloy steel and high-alloy steel, and the scrap steel comprises the following components in parts by weight: 10-20 parts of low-carbon steel; 7-12 parts of medium carbon steel; 6-11 parts of high-carbon steel alloy steel; 8-15 parts of low alloy steel; 10-18 parts of medium alloy steel; 3-8 parts of high alloy steel.
3. The method for manufacturing a high-strength wire rod according to claim 1, wherein: the auxiliary materials in the step B comprise arsenic, bismuth, chromium, cobalt, hafnium, indium, molybdenum, manganese, niobium, nickel, platinum, selenium, zinc and aluminum, and the auxiliary materials comprise the following components in parts by weight: 2-6 parts of arsenic; 1-4 parts of bismuth; 3-8 parts of chromium; 2-5 parts of cobalt; 1-3 parts of hafnium; 2-7 parts of indium; 7-12 parts of molybdenum; 6-10 parts of manganese; 2-5 parts of niobium; 10-15 parts of nickel; 4-10 parts of platinum; 3-8 parts of selenium; 4-8 parts of zinc; 6-12 parts of aluminum.
4. The method for manufacturing a high-strength wire rod according to claim 1, wherein: the tensile mechanism in the step E comprises a clamping sleeve, a clamping plate, fastening screws, a hydraulic rod, a first supporting rod, a second supporting rod, a support, a sliding seat and a sliding rod, wherein the first supporting rod is fixedly connected to the top of the support, the hydraulic rod is fixedly connected to the top of one side of the first supporting rod, the output end of the hydraulic rod is movably connected with the clamping sleeve through the second supporting rod in an L shape, the inner side of the clamping sleeve is fixedly connected with the clamping plate, the top of the clamping sleeve is located on the outer side of the clamping plate and is in threaded connection with the fastening screws, meanwhile, the output ends of the second supporting rod and the hydraulic rod are fixedly connected with the sliding rod, the bottom of the sliding rod is connected to the inner surface of the sliding seat.
5. The method for manufacturing a high-strength wire rod according to claim 1, wherein: winding mechanism includes workstation, motor, rolling dish, first guide roll and second guide roll, and rolling dish, first guide roll and second guide roll all pass through bearing swing joint in the top of workstation, and first guide roll is located the intermediate position of rolling dish and second guide roll, and simultaneously, motor fixed mounting is close to one side of rolling dish in the workstation top, and the output shaft of motor passes through the belt and is connected with the transmission of rolling dish.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011363943.2A CN112359169B (en) | 2020-11-27 | 2020-11-27 | Manufacturing method of high-strength wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011363943.2A CN112359169B (en) | 2020-11-27 | 2020-11-27 | Manufacturing method of high-strength wire |
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| CN112359169A true CN112359169A (en) | 2021-02-12 |
| CN112359169B CN112359169B (en) | 2022-06-17 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102061370A (en) * | 2011-01-31 | 2011-05-18 | 中国钢研科技集团有限公司 | Production process of rebar for concrete |
| CN102156071A (en) * | 2011-05-31 | 2011-08-17 | 河南省煤炭科学研究院有限公司 | Profile stretching fixture and horizontal profile stretching testing machine |
| CN203959429U (en) * | 2014-07-24 | 2014-11-26 | 厦门鑫泰博科技有限公司 | A kind of scrap ribbon rolling-up mechanism of producing lug |
| CN204369231U (en) * | 2014-12-10 | 2015-06-03 | 长园长通新材料有限公司 | A kind of automatic rolling device |
| CN111893238A (en) * | 2020-07-06 | 2020-11-06 | 四川省广汉市德盛钢铁有限责任公司 | Production process of corrosion-resistant steel bar |
-
2020
- 2020-11-27 CN CN202011363943.2A patent/CN112359169B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102061370A (en) * | 2011-01-31 | 2011-05-18 | 中国钢研科技集团有限公司 | Production process of rebar for concrete |
| CN102156071A (en) * | 2011-05-31 | 2011-08-17 | 河南省煤炭科学研究院有限公司 | Profile stretching fixture and horizontal profile stretching testing machine |
| CN203959429U (en) * | 2014-07-24 | 2014-11-26 | 厦门鑫泰博科技有限公司 | A kind of scrap ribbon rolling-up mechanism of producing lug |
| CN204369231U (en) * | 2014-12-10 | 2015-06-03 | 长园长通新材料有限公司 | A kind of automatic rolling device |
| CN111893238A (en) * | 2020-07-06 | 2020-11-06 | 四川省广汉市德盛钢铁有限责任公司 | Production process of corrosion-resistant steel bar |
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| CN112359169B (en) | 2022-06-17 |
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