CN114561592A - Method for preparing special-shaped channel steel - Google Patents

Method for preparing special-shaped channel steel Download PDF

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Publication number
CN114561592A
CN114561592A CN202210199588.2A CN202210199588A CN114561592A CN 114561592 A CN114561592 A CN 114561592A CN 202210199588 A CN202210199588 A CN 202210199588A CN 114561592 A CN114561592 A CN 114561592A
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Prior art keywords
percent
equal
less
channel steel
temperature
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Inventor
陶学顶
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Guangzhou Julong General Equipment Co ltd
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Guangzhou Julong General Equipment Co ltd
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Priority to CN202210199588.2A priority Critical patent/CN114561592A/en
Publication of CN114561592A publication Critical patent/CN114561592A/en
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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
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/002—Hybrid process, e.g. forging following casting
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/16—Remelting metals
    • C22B9/18—Electroslag remelting
    • 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
    • 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
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing 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
    • C22C38/06—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
    • C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
    • 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
    • C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
    • 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
    • C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
    • 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
    • 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)
  • Manufacturing & Machinery (AREA)
  • Heat Treatment Of Steel (AREA)

Abstract

The invention relates to the technical field of channel steel, and discloses a method for preparing special-shaped channel steel, which comprises the following elements in percentage by weight: c is less than or equal to 0.18 percent; si is less than or equal to 0.50 percent; mn: 1.00-1.70%; p is less than or equal to 0.025 percent; s is less than or equal to 0.020%; v is less than or equal to 0.15 percent; nb is less than or equal to 0.07 percent; AL: 0.015-4.50%; ti is less than or equal to 0.20 percent; cr is less than or equal to 0.30 percent; ni is less than or equal to 0.2 percent; cu is less than or equal to 0.30 percent; the invention has reasonable component design, reasonably controls the addition amount of the titanium element, fully exerts the good performances of high temperature resistance, low temperature resistance, strong acid resistance, strong alkali resistance and the like of the titanium element in the alloy, and ensures that the channel steel can be used in a special corrosive environment; the titanium alloy has good low-temperature toughness and fracture toughness and good plasticity, so that the channel steel is not easy to fracture in the machining process; after smelting, electroslag remelting is adopted, the purity of metal can be improved through the electroslag remelting, and the problem that the corrosion resistance of the special-shaped channel steel is influenced due to the fact that the metal is oxidized by gas in the metal is avoided.

Description

Method for preparing special-shaped channel steel
Technical Field
The invention relates to the technical field of special channel steel, in particular to a method for batching special-shaped channel steel.
Background
The channel steel is a long steel bar with a groove-shaped section, belongs to carbon structural steel for construction and machinery, is a steel bar with a complex section, has a groove-shaped section, and is mainly used for manufacturing building structures, curtain wall engineering, mechanical equipment, vehicles and the like.
When the existing channel steel is forged, hot rolling and other procedures are performed, phenomena such as fracture are likely to occur, defective products are generated, alloy materials for the channel steel contain a small amount of gas after being smelted, the gas is oxidized, metal impurities are caused, the corrosion resistance of the channel steel can be affected, meanwhile, the adding amount of various elements in the alloy is not controlled well, the corrosion resistance of the channel steel can be poor, and the channel steel cannot be used in a special application environment with strong acidity and alkalinity.
Disclosure of Invention
Aiming at the technical problems, the invention aims to provide a method for batching deformed channel steel.
In order to achieve the purpose of the invention, the invention discloses a method for preparing special-shaped channel steel, which comprises the following elements in percentage by weight: c is less than or equal to 0.18 percent; si is less than or equal to 0.50 percent; mn: 1.00-1.70%; p is less than or equal to 0.025 percent; s is less than or equal to 0.020%; v is less than or equal to 0.15 percent; nb is less than or equal to 0.07 percent; AL: 0.015-4.50%; ti is less than or equal to 0.20 percent; cr is less than or equal to 0.30 percent; ni is less than or equal to 0.2 percent; cu is less than or equal to 0.30 percent; the balance being Fe.
Preferably, the channel steel comprises the following elements in percentage by weight: c: 0.17 percent; si: 0.30 percent; mn: 1.22 percent; p: 0.014%; s: 0.010%; v: 0.14 percent; nb: 0.01 percent; AL: 0.025 percent; ti: 0.19 percent; cr: 0.10 percent; ni: 0.09%; cu: 0.25 percent; the balance being Fe.
Preferably, the channel steel comprises the following elements in percentage by weight: c: 0.13 percent; si is less than or equal to 0.45 percent; mn: 1.11 percent; p: 0.016 percent; s: 0.009%; v: 0.12 percent; nb: 0.06 percent; AL: 2.50 percent; ti: 0.11 percent; cr: 0.27 percent; ni: 0.17 percent; cu: 0.10 percent; the balance being Fe.
Preferably, the channel steel comprises the following elements in percentage by weight: c: 0.11 percent; si: 0.11 percent; mn: 1.65 percent; p: 0.024%; s: 0.019%; v: 0.10 percent; nb: 0.02 percent; AL: 4.30 percent; ti: 0.10 percent; cr: 0.09%; ni: 0.08%; cu: 0.20 percent; the balance being Fe.
The manufacturing process of the special-shaped channel steel comprises the following steps:
a. smelting
All metal materials are required to meet the quality standard, are used after being baked according to a system, and are heated and smelted by strictly controlling the addition amount of each element.
b. Refining
After the initial molten steel is charged into the furnace, mixed gas of Ar + O2 or N2+ O2 is blown into the furnace, and the temperature of the molten steel is controlled to 1680 +/-10 ℃ in the refining period.
c. Electroslag remelting
And removing surface defects of the cast ingot, and smelting by using a vacuum induction furnace, wherein the electrode size is phi 250 multiplied by 1500-1600 mm, the smelting voltage is 54-56V, and the smelting current is 7000-7500A to form the cast ingot.
d. Forging
(1) Loading the ingot into a furnace, forging and heating at the temperature of 1180-1220 ℃, and keeping the temperature for more than or equal to 90 min;
(2) the forging temperature is more than or equal to 1100 ℃, the finish forging temperature is more than or equal to 950 ℃, and the forging is carried out on a split fire for 52 directions.
e. Hot rolling
After checking the continuous rolling square billet, heating the continuous rolling square billet in a heating furnace, discharging the continuous rolling square billet from the furnace at the furnace temperature of 1130-1150 ℃, and carrying out rolling at the beginning of the continuous rolling square billet, wherein the rolling temperature is more than or equal to 1100 ℃, and the finishing temperature is more than or equal to 900 ℃;
f. roll forming
And (3) after drying, rolling and forming the wire rod for multiple times by a four-roller forming rolling mill, and rolling into an I shape.
Compared with the prior art, the burdening method and the manufacturing process of the special-shaped channel steel designed by the invention have the following advantages:
1. the batching method and the manufacturing process of the special-shaped channel steel adopt electroslag remelting after smelting, the electroslag remelting can improve the purity of metal, and gas in the metal is prevented from oxidizing the metal to influence the corrosion resistance of the special-shaped channel steel.
2. The proportioning method and the manufacturing process of the special-shaped channel steel reasonably control the proportioning amount of the titanium element, so that the titanium element fully exerts good high temperature resistance, low temperature resistance, strong acid resistance, strong alkali resistance and other properties in the alloy, and the channel steel can be used in a corrosive special environment.
3. According to the batching method and the manufacturing process of the special-shaped channel steel, the titanium alloy has good low-temperature toughness and fracture toughness and good plasticity, so that the channel steel is not easy to fracture in the processing process.
Detailed Description
In order to further understand the objects, structures, features and functions of the present invention, the following embodiments are described in detail.
Example 1:
the method for preparing the special-shaped channel steel comprises the following components in percentage by weight: c: 0.17 percent; si: 0.30 percent; mn: 1.22 percent; p: 0.014%; s: 0.010%; v: 0.14 percent; nb: 0.01 percent; AL: 0.025 percent; ti: 0.19 percent; cr: 0.10 percent; ni: 0.09%; cu: 0.25 percent; the balance being Fe.
Example 2:
the method for preparing the special-shaped channel steel comprises the following components in percentage by weight: c: 0.13 percent; si is less than or equal to 0.45 percent; mn: 1.11 percent; p: 0.016 percent; s: 0.009%; v: 0.12 percent; nb: 0.06 percent; AL: 2.50 percent; ti: 0.11 percent; cr: 0.27 percent; ni: 0.17 percent; cu: 0.10 percent; the balance being Fe.
Example 3:
the method for preparing the special-shaped channel steel comprises the following components in percentage by weight: c: 0.11 percent; si: 0.11 percent; mn: 1.65 percent; p: 0.024%; s: 0.019%; v: 0.10 percent; nb: 0.02 percent; AL: 4.30 percent; ti: 0.10 percent; cr: 0.09%; ni: 0.08 percent; cu: 0.20 percent; the balance being Fe.
A manufacturing process of a special-shaped channel steel comprises the following steps:
a. smelting
All metal materials are required to meet the quality standard, are used after being baked according to a system, and are heated and smelted by strictly controlling the addition amount of each element.
b. Refining of
After the initial molten steel is charged into the furnace, mixed gas of Ar + O2 or N2+ O2 is blown into the furnace, and the temperature of the molten steel is controlled to 1680 +/-10 ℃ in the refining period.
c. Electroslag remelting
And removing surface defects of the cast ingot, and smelting by using a vacuum induction furnace, wherein the electrode size is phi 250 multiplied by 1500-1600 mm, the smelting voltage is 54-56V, and the smelting current is 7000-7500A to form the cast ingot.
d. Forging
(1) Loading the ingot into a furnace, forging and heating at the temperature of 1180-1220 ℃, and keeping the temperature for more than or equal to 90 min;
(2) the forging temperature is more than or equal to 1100 ℃, the finish forging temperature is more than or equal to 950 ℃, and the forging is carried out on a split fire for 52 directions.
e. Hot rolling
After checking the continuous rolling square billet, heating the continuous rolling square billet in a heating furnace, discharging the continuous rolling square billet from the furnace at the furnace temperature of 1130-1150 ℃, and carrying out rolling at the beginning of the continuous rolling square billet, wherein the rolling temperature is more than or equal to 1100 ℃, and the finishing temperature is more than or equal to 900 ℃;
f. roll forming
And (3) after drying, rolling and forming the wire rod for multiple times by a four-roller forming rolling mill, and rolling into an I shape.
The invention has reasonable component design, reasonably controls the addition amount of the titanium element, fully exerts the good performances of high temperature resistance, low temperature resistance, strong acid resistance, strong alkali resistance and the like of the titanium element in the alloy, and ensures that the channel steel can be used in a special corrosive environment; the titanium alloy has good low-temperature toughness and fracture toughness and good plasticity, so that the channel steel is not easy to fracture in the processing process; after smelting, electroslag remelting is adopted, the purity of metal can be improved through the electroslag remelting, and the problem that the corrosion resistance of the special-shaped channel steel is influenced due to the fact that the metal is oxidized by gas in the metal is avoided.
The present invention has been described in relation to the above embodiments, which are only exemplary of the implementation of the present invention. It should be noted that the disclosed embodiments do not limit the scope of the invention. Rather, it is intended that all such modifications and variations be included within the spirit and scope of this invention.

Claims (5)

1. The method for preparing the special-shaped channel steel is characterized in that the channel steel comprises the following elements in percentage by weight: c is less than or equal to 0.18 percent; si is less than or equal to 0.50 percent; mn: 1.00-1.70%; p is less than or equal to 0.025 percent; s is less than or equal to 0.020%; v is less than or equal to 0.15 percent; nb is less than or equal to 0.07 percent; AL: 0.015-4.50%; ti is less than or equal to 0.20 percent; cr is less than or equal to 0.30 percent; ni is less than or equal to 0.2 percent; cu is less than or equal to 0.30 percent; the balance being Fe.
2. The method for preparing the special-shaped channel steel as claimed in claim 1, wherein the channel steel comprises the following elements in percentage by weight: c: 0.17 percent; si: 0.30 percent; mn: 1.22 percent; p: 0.014%; s: 0.010%; v: 0.14 percent; nb: 0.01 percent; AL: 0.025 percent; ti: 0.19 percent; cr: 0.10 percent; ni: 0.09%; cu: 0.25 percent; the balance being Fe.
3. The method for preparing the special-shaped channel steel as claimed in claim 1, wherein the channel steel comprises the following elements in percentage by weight: c: 0.13 percent; si is less than or equal to 0.45 percent; mn: 1.11 percent; p: 0.016 percent; s: 0.009%; v: 0.12 percent; nb: 0.06 percent; AL: 2.50 percent; ti: 0.11 percent; cr: 0.27 percent; ni: 0.17 percent; cu: 0.10 percent; the balance being Fe.
4. The method for preparing the special-shaped channel steel as claimed in claim 1, wherein the channel steel comprises the following elements in percentage by weight: c: 0.11 percent; si: 0.11 percent; mn: 1.65 percent; p: 0.024%; s: 0.019%; v: 0.10 percent; nb: 0.02 percent; AL: 4.30 percent; ti: 0.10 percent; cr: 0.09%; ni: 0.08 percent; cu: 0.20 percent; the balance being Fe.
5. The manufacturing process of the profiled channel as claimed in claim 1, wherein the manufacturing process of the channel comprises the following steps:
a. smelting
All metal materials are required to meet the quality standard, are used after being baked according to a system, and are heated and smelted by strictly controlling the addition amount of each element.
b. Refining
After the initial molten steel is charged into the furnace, mixed gas of Ar + O2 or N2+ O2 is blown into the furnace, and the temperature of the molten steel is controlled to 1680 +/-10 ℃ in the refining period.
c. Electroslag remelting
And removing surface defects of the cast ingot, and smelting by using a vacuum induction furnace, wherein the electrode size is phi 250 multiplied by 1500-1600 mm, the smelting voltage is 54-56V, and the smelting current is 7000-7500A to form the cast ingot.
d. Forging
(1) Loading the ingot into a furnace, forging and heating at the temperature of 1180-1220 ℃, and keeping the temperature for more than or equal to 90 min;
(2) the forging temperature is more than or equal to 1100 ℃, the finish forging temperature is more than or equal to 950 ℃, and the forging is carried out on a split fire for 52 directions.
e. Hot rolling
After checking the continuous rolling square billet, heating the continuous rolling square billet in a heating furnace, discharging the continuous rolling square billet from the furnace at the furnace temperature of 1130-1150 ℃, and carrying out rolling at the beginning of the continuous rolling square billet, wherein the rolling temperature is more than or equal to 1100 ℃, and the finishing temperature is more than or equal to 900 ℃;
f. roll forming
And (3) after drying, rolling and forming the wire rod for multiple times by a four-roller forming rolling mill, and rolling into an I shape.
CN202210199588.2A 2022-03-01 2022-03-01 Method for preparing special-shaped channel steel Pending CN114561592A (en)

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Application Number Priority Date Filing Date Title
CN202210199588.2A CN114561592A (en) 2022-03-01 2022-03-01 Method for preparing special-shaped channel steel

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115786815A (en) * 2022-11-17 2023-03-14 河钢股份有限公司 Alkaline environment corrosion resistant hot rolled steel coil for pipeline steel and preparation method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115786815A (en) * 2022-11-17 2023-03-14 河钢股份有限公司 Alkaline environment corrosion resistant hot rolled steel coil for pipeline steel and preparation method thereof
CN115786815B (en) * 2022-11-17 2024-03-01 河钢股份有限公司 Alkali-resistant environment corrosion-resistant pipeline steel hot rolled steel coil and preparation method thereof

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