CN110184516A - A kind of high line φ 6mm-HRB400E spiral shell disk and its production method - Google Patents
A kind of high line φ 6mm-HRB400E spiral shell disk and its production method Download PDFInfo
- Publication number
- CN110184516A CN110184516A CN201910498653.XA CN201910498653A CN110184516A CN 110184516 A CN110184516 A CN 110184516A CN 201910498653 A CN201910498653 A CN 201910498653A CN 110184516 A CN110184516 A CN 110184516A
- Authority
- CN
- China
- Prior art keywords
- parts
- spiral shell
- hrb400e
- temperature
- shell disk
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- C21D8/08—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires for concrete reinforcement
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C22/00—Alloys based on manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
The present invention relates to metal material processings and field shaping technique, and a kind of high line φ 6mm-HRB400E spiral shell disk is disclosed, the raw material including following parts by weight proportion: S and 5-8 parts of the Fe of P, 0.2-0.45 part of Mn, 0.2-0.45 part of Si, 13-15 part of 2-2.5 parts C, 4-6 part.The high line φ 6mm-HRB400E spiral shell disk and its production method, by being equipped with Heats up the combustion control system, accurately control residual oxygen content, guarantee the oxidizing atmosphere in furnace, relative to the steel grade containing V, heating process is also contemplated that the solid solubility of V, 900 DEG C of carbonitride due to V begin to dissolve, therefore it does not need to set excessively high heating temperature and heating time, heating temperature is excessively high, soaking time is too long easily to form coarse austenite grain, it is not easy to guarantee performance indicator, the steel grade of V is free of for this, set 900-980 DEG C of bringing-up section furnace temperature, 900-1080 DEG C of soaking zone furnace temperature, it is advantageous to guarantee performance indicator, controlled rolling uses zerolling technique, zerolling is to carry out tandem rolling large deformation below recrystallization temperature and strain accumulative.
Description
Technical field
The present invention relates to metal material processing and field shaping technique, specially a kind of high line φ 6mm-HRB400E spiral shell disk
And its production method.
Background technique
China is the country of earthquake more than one, and the anti-seismic performance of reinforcing bar directly affects the life wealth of more earthquake-stricken area people
Safety is produced, anti-seismic performance is the mechanical performance index based on high strain low cycle fatigue and its influence factor, i.e. intensity and plasticity
Reasonable cooperation, low strain aging sensitivity and low ductile-brittle transition temperature and good solderability, according to GBl499.2-
2007 national standards are to the technical requirements of spiral shell disk, and antidetonation screw thread is except yield strength is met not less than 400MPa, and the strong difficulty of tension is not
Less than 540MPa, elongation not less than 16% outside, also to meet reinforcing bar actual measurement tensile strength and actual measurement yield strength characteristic value it
Smaller by 1.25 than not, this value the high more has the longer uniform plastic deformation stage after being conducive to reinforcement yielding, can absorb more
Shake energy.
Recently as the further sternness of steel situation, " cost efficiency, control lose and make up deficits, Resource regeneration, transition and upgrade "
Etc. thinkings have become the main guiding theory in each iron and steel enterprise reply steel severe winter, such as in 103225043 B of Chinese patent CN
A kind of HRB500, HRB500E spiral shell disk production technology is disclosed, microalloy is carried out using a small amount of V or VN is added by chemical component
Change, to improve the surrender and tensile strength of steel, vanadium is combined to form carbide, nitride and carbon nitridation with carbon and nitrogen strongly
Object is closed, alternate precipitation occurs during these compound roller repairings and is generally precipitated, precipitation strength, but the life are played the role of
Production. art, which needs to add, is added a small amount of V or VN progress microalloying, is unable to give full play high line Controlled Rolling And Controlled Cooling advantage, realizes
Minimizing production, therefore propose a kind of high line φ 6mm-HRB400E spiral shell disk and its production method.
Summary of the invention
(1) the technical issues of solving
In view of the deficiencies of the prior art, the present invention provides a kind of high line φ 6mm-HRB400E spiral shell disk and its production method,
Have under the premise of fully meeting anti-seismic steel bar requirement, give full play to high line Controlled Rolling And Controlled Cooling advantage, realizes minimizing production
The advantages of, it solves production technology and needs to add a small amount of alloy, thus the problem of improving production cost.
(2) technical solution
Under the premise of fully meeting anti-seismic steel bar requirement for realization is above-mentioned, high line Controlled Rolling And Controlled Cooling advantage is given full play to,
The purpose for the advantages of realizing minimizing production, the invention provides the following technical scheme: a kind of high line φ 6mm-HRB400E spiral shell disk,
Raw material including following parts by weight proportion: the P of Mn, 0.2-0.45 part of Si, 13-15 part of 2-2.5 parts C, 4-6 part,
0.2-0.45 parts of S and 5-8 parts of Fe.
Preferably, including following parts by weight proportion raw material: 2 parts of C, 4 parts of Si, 13 parts of Mn, 0.2 part of P,
0.2 part of S and 5 part of Fe.
Preferably, the raw material including following parts by weight proportion: 2.5 parts of C, 6 parts of Si, 15 parts of Mn, 0.45 part
P, 0.45 part of S and 8 part of Fe.
Preferably, the raw material including following parts by weight proportion: 2.25 parts of C, 5 parts of Si, 14 parts of Mn, 0.32 part
P, 0.32 part of S and 6.5 part of Fe.
Another technical problem to be solved by the present invention is that a kind of preparation method of high line φ 6mm-HRB400E spiral shell disk is provided,
The following steps are included:
1) weigh P, 0.2-0.45 part of Mn, 0.2-0.45 part of Si, 13-15 part of 2-2.5 parts C, 4-6 part S and
It is that molten steel casts steel billet that 5-8 parts of Fe, which melts,；
2) steel billet after step 1) casting is sent into heat accumulating type walking beam heating furnace and is heated, bringing-up section furnace temperature
900-980 DEG C, 900-1080 DEG C of soaking zone furnace temperature, heat accumulating type walking beam heating furnace is using the mixed of blast furnace gas and coal gas of converter
It closes gas to be heated, heat accumulating type walking beam heating furnace is equipped with Heats up the combustion control system；
3) steel billet after heating in step 2) is subjected to high pressure water dephosphorization and cooling, high-pressure water pressure 0.5-0.7Mpa；
4) after steel billet temperature falls to 920-980 DEG C in step 3), start roughing, the rigid part of pre- finish rolling is passed through into No. 1 water
Case is rapidly cooled, and controlling into final rolling temperature is 700-900 DEG C；
5) it after step 4) goes out finish rolling, is rapidly cooled by 2-4 water tank, controls 820-840 DEG C of laying temperature；
6) after step 5) spinning, steel part is subjected to the air-cooled cooling of stelmor, roller table speed selection high speed, blower cooling
Technological principle is that preceding several fan deliveries are opened to maximum, is cooled to pearlitic transformation area always, is subject to and does not generate bainite；
7) reinforcing bar spiral shell disk is kept the temperature after will be air-cooled, is obtained finished product reinforcing bar spiral shell disk, is naturally cooled to room temperature then to get arriving
φ 6mm-HRB400E spiral shell disk.
(3) beneficial effect
Compared with prior art, the present invention provides a kind of high line φ 6mm-HRB400E spiral shell disk and its production method, have
Below the utility model has the advantages that
The high line φ 6mm-HRB400E spiral shell disk and its production method are accurate to control by being equipped with Heats up the combustion control system
Residual oxygen content guarantees the oxidizing atmosphere in furnace, and relative to the steel grade containing V, heating process is also contemplated that the solid solubility of V, due to V's
900 DEG C of carbonitride begin to dissolve, therefore do not need to set excessively high heating temperature and heating time, and heating temperature is excessively high,
Soaking time is too long easily to form coarse austenite grain, is not easy to guarantee performance indicator, and the steel grade of V, setting are free of for this
900-980 DEG C of bringing-up section furnace temperature, 900-1080 DEG C of soaking zone furnace temperature favorably guarantee performance indicator, and controlled rolling uses zerolling work
Skill, zerolling are tandem rolling large deformation to be carried out below recrystallization temperature and strain is accumulative, mainly it is thick, in roll, pre- finish rolling portion
Shunting time and finish rolling part passage are realized, since mill speed is fast, dynamic recrystallization does not occur after finish to gauge after austenite deformation, brilliant
Intragranular contain the defects of a large amount of Zona transformans for control it is cold after obtain comparatively fine ferrite and pearlite and carry out sufficient preparation, after rolling
It is rapidly cooled, is cooled to ferrite area fastly, form uniformly tiny ferritic structure, be then cooled to pearlite region fastly, obtain
The small-pitch pearlitic structrure of lamella is rapidly cooled by being provided after finish rolling by 2-4 water tank, control spinning temperature
820-840 DEG C of degree, carries out the air-cooled cooling of stelmor after spinning, roller table speed selection high speed guarantees wire rod overlapped points and centre
The temperature difference is small, and Mechanical Fluctuation is small, to achieve the purpose that the intensity and plasticity that improve material, while can effectively avoid bainite
The generation of tissue, using the yield strength of high line φ 6mm-HRB400E spiral shell disk produced by the invention within the scope of 410-430MPa,
Percentage of total elongation is all 10% or more under maximum, force, strong flexor ratio all 1.45 or more, metallographic structure based on ferrite and pearlite,
The requirement of anti-seismic steel bar is fully met, the success of the reduction process has product for the antidetonation spiral shell disk for producing higher intensity grade
Pole meaning.
Specific embodiment
Below in conjunction with the embodiment of the present invention, technical solution in the embodiment of the present invention is clearly and completely retouched
It states, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on the present invention
In embodiment, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall within the protection scope of the present invention.
Embodiment one: a kind of high line φ 6mm-HRB400E spiral shell disk, the raw material including following parts by weight proportion: 2 parts of C,
4 parts of Si, 13 parts of Mn, 0.2 part of P, S and 5 of 0.2 part part of Fe.
Another technical problem to be solved by the present invention is that a kind of preparation method of high line φ 6mm-HRB400E spiral shell disk is provided,
The following steps are included:
1) weighing 2 parts of C, 4 parts of Si, 13 parts of Mn, 0.2 part of P, S and 5 of 0.2 part part of Fe to melt is that molten steel is cast
Make steel billet；
2) steel billet after step 1) casting is sent into heat accumulating type walking beam heating furnace and is heated, bringing-up section furnace temperature
900 DEG C, 900 DEG C of soaking zone furnace temperature, heat accumulating type walking beam heating furnace is carried out using the gaseous mixture of blast furnace gas and coal gas of converter
Heating, heat accumulating type walking beam heating furnace are equipped with Heats up the combustion control system；
3) steel billet after heating in step 2) is subjected to high pressure water dephosphorization and cooling, high-pressure water pressure 0.5Mpa；
4) after steel billet temperature in step 3) falls to 920 DEG C, start roughing, by the rigid part of pre- finish rolling by No. 1 water tank into
Row is quickly cooled down, and controlling into final rolling temperature is 700 DEG C；
5) it after step 4) goes out finish rolling, is rapidly cooled by 2-4 water tank, controls 820 DEG C of laying temperature；
6) after step 5) spinning, steel part is subjected to the air-cooled cooling of stelmor, roller table speed selection high speed, blower cooling
Technological principle is that preceding several fan deliveries are opened to maximum, is cooled to pearlitic transformation area always, is subject to and does not generate bainite；
7) reinforcing bar spiral shell disk is kept the temperature after will be air-cooled, is obtained finished product reinforcing bar spiral shell disk, is naturally cooled to room temperature then to get arriving
φ 6mm-HRB400E spiral shell disk.
Embodiment two: a kind of high line φ 6mm-HRB400E spiral shell disk, the raw material including following parts by weight proportion: 2.5 parts
C, 6 parts of Si, 15 parts of Mn, 0.45 part of P, S and 8 of 0.45 part part of Fe.
Another technical problem to be solved by the present invention is that a kind of preparation method of high line φ 6mm-HRB400E spiral shell disk is provided,
The following steps are included:
1) weighing 2.5 parts of C, 6 parts of Si, 15 parts of Mn, 0.45 part of P, S and 8 of 0.45 part part of Fe to melt is steel
Water casts steel billet；
2) steel billet after step 1) casting is sent into heat accumulating type walking beam heating furnace and is heated, bringing-up section furnace temperature
980 DEG C, 1080 DEG C of soaking zone furnace temperature, heat accumulating type walking beam heating furnace is carried out using the gaseous mixture of blast furnace gas and coal gas of converter
Heating, heat accumulating type walking beam heating furnace are equipped with Heats up the combustion control system；
3) steel billet after heating in step 2) is subjected to high pressure water dephosphorization and cooling, high-pressure water pressure 0.7Mpa；
4) after steel billet temperature in step 3) falls to 980 DEG C, start roughing, by the rigid part of pre- finish rolling by No. 1 water tank into
Row is quickly cooled down, and controlling into final rolling temperature is 900 DEG C；
5) it after step 4) goes out finish rolling, is rapidly cooled by No. 4 water tanks, controls 840 DEG C of laying temperature；
6) after step 5) spinning, steel part is subjected to the air-cooled cooling of stelmor, roller table speed selection high speed, blower cooling
Technological principle is that preceding several fan deliveries are opened to maximum, is cooled to pearlitic transformation area always, is subject to and does not generate bainite；
7) reinforcing bar spiral shell disk is kept the temperature after will be air-cooled, is obtained finished product reinforcing bar spiral shell disk, is naturally cooled to room temperature then to get arriving
φ 6mm-HRB400E spiral shell disk.
Embodiment three: a kind of high line φ 6mm-HRB400E spiral shell disk, the raw material including following parts by weight proportion: 2.25 parts
C, 5 parts of Si, 14 parts of Mn, 0.32 part of P, S and 6.5 of 0.32 part part of Fe.
Another technical problem to be solved by the present invention is that a kind of preparation method of high line φ 6mm-HRB400E spiral shell disk is provided,
The following steps are included:
1) weigh 2.25 parts of C, 5 parts of Si, 14 parts of Mn, 0.32 part of P, S and 6.5 of 0.32 part part Fe thawing be
Molten steel casts steel billet；
2) steel billet after step 1) casting is sent into heat accumulating type walking beam heating furnace and is heated, bringing-up section furnace temperature
940 DEG C, 990 DEG C of soaking zone furnace temperature, heat accumulating type walking beam heating furnace is carried out using the gaseous mixture of blast furnace gas and coal gas of converter
Heating, heat accumulating type walking beam heating furnace are equipped with Heats up the combustion control system；
3) steel billet after heating in step 2) is subjected to high pressure water dephosphorization and cooling, high-pressure water pressure 0.6Mpa；
4) after steel billet temperature in step 3) falls to 950 DEG C, start roughing, by the rigid part of pre- finish rolling by No. 1 water tank into
Row is quickly cooled down, and controlling into final rolling temperature is 800 DEG C；
5) it after step 4) goes out finish rolling, is rapidly cooled by 2-4 water tank, controls 830 DEG C of laying temperature；
6) after step 5) spinning, steel part is subjected to the air-cooled cooling of stelmor, roller table speed selection high speed, blower cooling
Technological principle is that preceding several fan deliveries are opened to maximum, is cooled to pearlitic transformation area always, is subject to and does not generate bainite；
7) reinforcing bar spiral shell disk is kept the temperature after will be air-cooled, is obtained finished product reinforcing bar spiral shell disk, is naturally cooled to room temperature then to get arriving
φ 6mm-HRB400E spiral shell disk.
The beneficial effects of the present invention are: the high line φ 6mm-HRB400E spiral shell disk and its production method, by being equipped with heating combustion
Control system is burnt, residual oxygen content is accurately controlled, guarantees the oxidizing atmosphere in furnace, relative to the steel grade containing V, heating process is also taken an examination
Consider the solid solubility of V, 900 DEG C of carbonitride due to V begin to dissolve, and do not need to set excessively high heating temperature and heating
Time, heating temperature is excessively high, and soaking time is too long easily to form coarse austenite grain, is not easy to guarantee performance indicator, for
This is free of the steel grade of V, sets 900-980 DEG C of bringing-up section furnace temperature, and 900-1080 DEG C of soaking zone furnace temperature favorably guarantees performance indicator,
Controlled rolling uses zerolling technique, and zerolling is to carry out tandem rolling large deformation below recrystallization temperature and strain to add up, mainly
It is thick, in roll, pre- finish rolling part passage and finish rolling part passage are realized, since mill speed is fast, after finish to gauge after austenite deformation
The defects of dynamic recrystallization does not occur, contains a large amount of Zona transformans in crystal grain is to obtain comparatively fine ferrite and pearlite after control is cold
Sufficient preparation is carried out, is rapidly cooled after rolling, is cooled to ferrite area fastly, forms uniformly tiny ferritic structure, then
It is cooled to pearlite region fastly, obtains the small-pitch pearlitic structrure of lamella, is carried out by being provided after finish rolling by 2-4 water tank
It is quickly cooled down, controls 820-840 DEG C of laying temperature, the air-cooled cooling of stelmor is carried out after spinning, roller table speed selection high speed is protected
It demonstrate,proves wire rod overlapped points and internal temperature approach is small, Mechanical Fluctuation is small, to achieve the purpose that the intensity and plasticity that improve material, together
When can effectively avoid the generation of bainite structure, using the yield strength of high line φ 6mm-HRB400E spiral shell disk produced by the invention
Within the scope of 410-430MPa, under maximum, force percentage of total elongation all 10% or more, strong flexor ratio all 1.45 or more, metallographic structure with
Based on ferrite and pearlite, the requirement of anti-seismic steel bar is fully met, the success of the reduction process is for producing higher intensity
The antidetonation spiral shell disk of grade has positive effect.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (5)
1. a kind of high line φ 6mm-HRB400E spiral shell disk, which is characterized in that the raw material including following parts by weight proportion: 2-2.5 parts
C, 4-6 part Si, 13-15 part Mn, 0.2-0.45 part P, 0.2-0.45 part S and 5-8 parts of Fe.
2. a kind of high line φ 6mm-HRB400E spiral shell disk according to claim 1, which is characterized in that including following parts by weight
The raw material of number proportion: 2 parts of C, 4 parts of Si, 13 parts of Mn, 0.2 part of P, S and 5 of 0.2 part part of Fe.
3. a kind of high line φ 6mm-HRB400E spiral shell disk according to claim 1, which is characterized in that including following parts by weight
The raw material of number proportion: 2.5 parts of C, 6 parts of Si, 15 parts of Mn, 0.45 part of P, S and 8 of 0.45 part part of Fe.
4. a kind of high line φ 6mm-HRB400E spiral shell disk according to claim 1, which is characterized in that including following parts by weight
The raw material of number proportion: 2.25 parts of C, 5 parts of Si, 14 parts of Mn, 0.32 part of P, S and 6.5 of 0.32 part part of Fe.
5. a kind of preparation method of high line φ 6mm-HRB400E spiral shell disk, which comprises the following steps:
1) S and 5-8 parts of P, 0.2-0.45 part of Mn, 0.2-0.45 part of Si, 13-15 part of 2-2.5 parts C, 4-6 part are weighed
Fe melt be molten steel cast steel billet；
2) steel billet after step 1) casting is sent into heat accumulating type walking beam heating furnace and is heated, bringing-up section furnace temperature 900-
980 DEG C, 900-1080 DEG C of soaking zone furnace temperature, heat accumulating type walking beam heating furnace uses the gaseous mixture of blast furnace gas and coal gas of converter
It is heated, heat accumulating type walking beam heating furnace is equipped with Heats up the combustion control system；
3) steel billet after heating in step 2) is subjected to high pressure water dephosphorization and cooling, high-pressure water pressure 0.5-0.7Mpa；
4) after steel billet temperature falls to 920-980 DEG C in step 3), start roughing, by the rigid part of pre- finish rolling by No. 1 water tank into
Row is quickly cooled down, and controlling into final rolling temperature is 700-900 DEG C；
5) it after step 4) goes out finish rolling, is rapidly cooled by 2-4 water tank, controls 820-840 DEG C of laying temperature；
6) after step 5) spinning, steel part is subjected to the air-cooled cooling of stelmor, roller table speed selection high speed, blower cooling technique
Principle is that preceding several fan deliveries are opened to maximum, is cooled to pearlitic transformation area always, is subject to and does not generate bainite；
7) air-cooled rear reinforcing bar spiral shell disk is kept the temperature, obtains finished product reinforcing bar spiral shell disk, naturally cool to room temperature then to get φ is arrived
6mm-HRB400E spiral shell disk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910498653.XA CN110184516A (en) | 2019-06-10 | 2019-06-10 | A kind of high line φ 6mm-HRB400E spiral shell disk and its production method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910498653.XA CN110184516A (en) | 2019-06-10 | 2019-06-10 | A kind of high line φ 6mm-HRB400E spiral shell disk and its production method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110184516A true CN110184516A (en) | 2019-08-30 |
Family
ID=67721084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910498653.XA Pending CN110184516A (en) | 2019-06-10 | 2019-06-10 | A kind of high line φ 6mm-HRB400E spiral shell disk and its production method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110184516A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111893279A (en) * | 2020-08-12 | 2020-11-06 | 宝武集团鄂城钢铁有限公司 | Stelmor air-cooled wire-controlled cold production method of HRB400(E) deformed steel bar with yield strength of more than or equal to 420MPa |
| CN115323145A (en) * | 2022-07-14 | 2022-11-11 | 包头钢铁（集团）有限责任公司 | Method for producing 400 MPa-grade ultrafine crystal reinforcing steel bar by low-temperature air-cooling rolling and cooling control process |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1122449A2 (en) * | 2000-02-04 | 2001-08-08 | Emhart Inc. | Anti-galling fastener inserts |
| CN104357741A (en) * | 2014-11-18 | 2015-02-18 | 陕西钢铁集团有限公司 | HRB400E high-strength aseismic coiled reinforced bar and production method thereof |
| CN109234637A (en) * | 2018-10-30 | 2019-01-18 | 河钢股份有限公司承德分公司 | A kind of Korea Spro marks SD600 valve snail steel and its production method |
| CN109266827A (en) * | 2018-08-30 | 2019-01-25 | 日照钢铁控股集团有限公司 | It is a kind of to control the production technology that metallographic structure is formed in warm-rolling technique |
-
2019
- 2019-06-10 CN CN201910498653.XA patent/CN110184516A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1122449A2 (en) * | 2000-02-04 | 2001-08-08 | Emhart Inc. | Anti-galling fastener inserts |
| CN104357741A (en) * | 2014-11-18 | 2015-02-18 | 陕西钢铁集团有限公司 | HRB400E high-strength aseismic coiled reinforced bar and production method thereof |
| CN109266827A (en) * | 2018-08-30 | 2019-01-25 | 日照钢铁控股集团有限公司 | It is a kind of to control the production technology that metallographic structure is formed in warm-rolling technique |
| CN109234637A (en) * | 2018-10-30 | 2019-01-18 | 河钢股份有限公司承德分公司 | A kind of Korea Spro marks SD600 valve snail steel and its production method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111893279A (en) * | 2020-08-12 | 2020-11-06 | 宝武集团鄂城钢铁有限公司 | Stelmor air-cooled wire-controlled cold production method of HRB400(E) deformed steel bar with yield strength of more than or equal to 420MPa |
| CN115323145A (en) * | 2022-07-14 | 2022-11-11 | 包头钢铁（集团）有限责任公司 | Method for producing 400 MPa-grade ultrafine crystal reinforcing steel bar by low-temperature air-cooling rolling and cooling control process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100467652C (en) | Easy-weld hardening high-strength steel plate and production method thereof | |
| CN107604248B (en) | A kind of high intensity Q500GJD quenched and tempered state steel plate for building structure and its manufacturing method | |
| CN109385576A (en) | A kind of inexpensive X65 pipe line steel and its manufacturing method based on magnesium processing | |
| CN102925799B (en) | A kind of production method of ultra-high strength steel plate | |
| CN113025895B (en) | High-toughness microalloyed medium plate with good core metallurgical quality and preparation method thereof | |
| CN103160746A (en) | Steel for high-strength thick-wall water delivery pipe and manufacturing method thereof | |
| CN102876997B (en) | Easy-welding tempering high-strength steel plate for ocean platform and production method thereof | |
| CN109576466A (en) | A kind of special thick low temperature structure steel plate of low compression ratio and its manufacturing method | |
| CN106591742A (en) | High-carbon, sulfur-containing and easy-cutting type ferritic stainless steel and production method thereof | |
| CN109022732A (en) | A kind of production method that can reduce medium high carbon structural steel and iron banded structure | |
| CN110184516A (en) | A kind of high line φ 6mm-HRB400E spiral shell disk and its production method | |
| CN102899563B (en) | A kind of production method of ultra-high strength steel plate | |
| CN106676418B (en) | The atmosphere corrosion resistance structural steel molten steel of nitrogen containing niobium and atmosphere corrosion resistance structural steel and its production method | |
| CN102876972B (en) | A kind of production method of ultra-high strength steel plate | |
| CN115976418A (en) | Non-quenched and tempered GF20Mn2V steel for high-strength bolt and preparation method thereof | |
| CN108359899A (en) | A kind of super high strength construction steel BG960 and preparation method | |
| CN102925800B (en) | A kind of production method of ultra-high strength steel plate | |
| CN106319350A (en) | Rolling and heat treatment production method of high-strength steel with yield strength of 900MPa | |
| CN106676427B (en) | Atmosphere corrosion resistance structural steel molten steel and the nitrogen atmosphere corrosion resistance structural steel of titanium containing vanadium and its production method | |
| CN106676402B (en) | The atmosphere corrosion resistance structural steel molten steel of titanium containing chromium and atmosphere corrosion resistance structural steel and its production method | |
| CN106676398B (en) | The nitrogen atmosphere corrosion resistance structural steel molten steel of titanium containing vanadium and atmosphere corrosion resistance structural steel and its production method | |
| CN106676417B (en) | The atmosphere corrosion resistance structural steel molten steel of nitrogen containing vanadium and atmosphere corrosion resistance structural steel and its production method | |
| CN106676428B (en) | Atmosphere corrosion resistance structural steel molten steel and the atmosphere corrosion resistance structural steel of nitrogen containing niobium and its production method | |
| CN114672724B (en) | Rare earth and nitrogen microalloyed molybdenum-containing HRB500E disc spiral steel bar and production method thereof | |
| CN106676399B (en) | Atmosphere corrosion resistance structural steel molten steel and the atmosphere corrosion resistance structural steel of titanium containing chromium and its production method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190830 |
|
| RJ01 | Rejection of invention patent application after publication |