CN109972024A - A kind of preparation method of pinion steel Steel Bar and preparation method thereof and rod iron - Google Patents

A kind of preparation method of pinion steel Steel Bar and preparation method thereof and rod iron Download PDF

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Publication number
CN109972024A
CN109972024A CN201910392756.8A CN201910392756A CN109972024A CN 109972024 A CN109972024 A CN 109972024A CN 201910392756 A CN201910392756 A CN 201910392756A CN 109972024 A CN109972024 A CN 109972024A
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steel
pinion
steel bar
preparation
rod iron
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CN109972024B (en
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万文华
许加陆
来永彪
何西
翟启杰
龚永勇
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Changzhou Bangyi Iron And Steel Co Ltd
Zenith Steel Group Co Ltd
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Changzhou Bangyi Iron And Steel Co Ltd
Zenith Steel Group Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D1/00General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18Hardening; Quenching with or without subsequent tempering
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D6/00Heat treatment of ferrous alloys
    • C21D6/004Heat treatment of ferrous alloys containing Cr and Ni
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D6/00Heat treatment of ferrous alloys
    • C21D6/005Heat treatment of ferrous alloys containing Mn
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D6/00Heat treatment of ferrous alloys
    • C21D6/008Heat treatment of ferrous alloys containing Si
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D8/00Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/06Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires
    • C21D8/065Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires of ferrous alloys
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D9/00Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0075Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rods of limited length
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C33/00Making ferrous alloys
    • C22C33/04Making ferrous alloys by melting
    • C22C33/06Making ferrous alloys by melting using master alloys
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/002Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/02Ferrous alloys, e.g. steel alloys containing silicon
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/04Ferrous alloys, e.g. steel alloys containing manganese
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/06Ferrous alloys, e.g. steel alloys containing aluminium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/44Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten

Abstract

The invention discloses the preparation methods of a kind of pinion steel Steel Bar and preparation method thereof and rod iron.The composition of the pinion steel Steel Bar includes the chemical component of following mass percent: C:0.17%~0.24%;Mn:0.85%~1.07%;Si:0.19%~0.30%;Cr:0.98%~1.10%;Mo:0.05%~0.10%;Ni:0.15%~0.25%;Al:0.01%~0.05%;P: less than 0.02%;S: less than 0.02%;Surplus is Fe, and the mass ratio of pinion steel the Steel Bar Mn and Si are between 3.5 to 4.0.Pinion steel Steel Bar provided by the present invention has preferable end hardenability.Simple production process simultaneously, cost is relatively low.

Description

A kind of preparation method of pinion steel Steel Bar and preparation method thereof and rod iron
Technical field
The present invention relates to pinion steel Steel Bar field more particularly to a kind of pinion steel Steel Bars, the pinion steel rod iron Rod iron is made with the preparation method of steel and using the pinion steel Steel Bar.
Technical background
Auto industry is that the important symbol auto industry of one national economic development level of measurement is to measure country's warp The important symbol for development level of helping, automobile gear is driving parts important on automobile, it is responsible for the task of transmitting power, tooth The height of wheel quality decides the quality of automotive performance.Automobile gear processing industry, automobile production manufacturer and autoist are all uncommon Hope that automobile gear should include highly resistance ability, height stings ability, small deformation ability, high accuracy of gear ability, highly resistance tooth root flexural fatigue Ability, high service life, good processing performance stability.In general, the pinion steel of high quality should have the matter there are four aspect Figureofmerit, i.e., narrow end hardenability are wide;Cleanliness is high;The grain size of fine uniform and excellent surface quality.
The end hardenability of pinion steel reflects the centre hardness of pinion steel, the end hardenability of steel is better, then gear Depth of hardening zone is deeper, and pinion steel is smaller through the back-geared deflection of Overheating Treatment, and gear reconditioning quality is smaller, and occlusion precision is got over Height is more conducive to the processing of gear and the stabilization of performance.There are many factor for influencing pinion steel end hardenability, sum up main There are three the factors of aspect: first is that the chemical component of steel;Second is that autstenitic grain size;Third is that austenitizing degree.In many shadows Ring factor in, the influence of the uniformity of the chemical component and chemical component of steel is mostly important, in chemical component C, Ni, Mn, Cr and Mo is conducive to improve the end hardenability of steel.In general, representing the end hardenability energy of steel, through hardening with end hardenability bandwidth Property bandwidth is smaller, and the through hardening performance of steel is better.
Therefore, pinion steel how to be made to obtain the preferable end hardenability technical problem urgently to be resolved as this field.
Summary of the invention
It is an object of the invention to: for deficiency present in current techniques, provide a kind of pinion steel Steel Bar, the tooth Take turns the preparation method of steel Steel Bar.The pinion steel Steel Bar adds suitable on the basis of common C-Si-Mn mild steel Microalloy element such as Mo, Ni, and define that steel grade silicon compares suddenly, the alloying element ratio for being optimal.Pass through composite alloy Change on the basis of giving full play to each alloy element action, each alloying element interaction synergistic effect reaches Fracture of Material and surface The cooperation of wearability.With inexpensive ordinary steel production process equipment (electric arc furnaces-LF- (VD-)-continuous casting and direct rolling) in preparation method High quality special steel kind is produced, the property of steel is realized using special thermal treatment technique.The gear that the present invention obtains Steel Steel Bar has preferable end hardenability.
Technical method of the invention are as follows:
A kind of pinion steel Steel Bar, wherein the pinion steel Steel Bar include following mass percent chemistry at Point:
C:0.17%~0.24%;Mn:0.85%~1.07%;Si:0.19%~0.30%;Cr:0.98%~ 1.10%;Mo:0.05%~0.10%;Ni:0.15%~0.25%;Al:0.01%~0.05%;P: less than 0.02%;S: Less than 0.02%;Surplus is Fe, and the mass ratio of pinion steel Steel Bar the kind Mn and Si are between 3.5 to 4.0.Manganese silicon Than the mobility that can be improved molten steel 3.5 or more, pourability is improved.Silica dystecticization can be generated lower than 3.5 Object is closed, is unfavorable for being poured, especially will cause molten steel premature solidification when pouring temperature is lower, reduce molten steel recovery rate.
The preparation method of the pinion steel Steel Bar, comprising the following steps:
(1) according to the composition and ratio of the pinion steel Steel Bar, it is blended into arc melting by blast-melted, is obtained just Beginning molten steel is added ferroalloy and carries out alloying into ladle, then carries out LF and VD to the molten steel after the alloying and refine, with It obtains described to cast steel water;
The ferroalloy is Antaciron, manganeisen, ferrochrome, dilval and ferro-molybdenum;
(2) continuous casting will be carried out to cast steel water, and will obtain steel billet, i.e. Steel Bar.
A kind of rod iron is made of above-mentioned pinion steel Steel Bar.
The preparation method of the rod iron, comprising the following steps:
(1) steel billet is subjected to continuous rolling, is rolled into the rod iron of required specification.Wherein, start rolling temperature 1050- 1100 DEG C, finishing temperature is 950 DEG C to 1000 DEG C;Then rear product will be rolled and be air-cooled to room temperature;
(2) roll product after cooling is heated to 900 DEG C, soaking time 30mins;Then water cooling is cold to 300 DEG C But the time is 10mins;Product after cooling is subjected to tempering again, tempering temperature is 400 DEG C, soaking time 80mins, Finally obtain required rod iron.
In the present invention, improve the respective performances of steel grade by adding appropriate microalloy element.Wherein addition Mo improves steel Temper resistance improves plasticity, increases the drag of cracking and abrasion;Design of the mass ratio of Mn and Si between 3.5 to 4.0, Since Mn has acted on solution strengthening effect, Si is based on stable austenite;Influence of the Ni to the harden ability of steel is weaker, and Ni is also Austenite former can postpone the phase transformation of austenite, improve the harden ability of steel;The main function of Cr is to improve harden ability, Low-carbon lath-shaped martensitic structure is obtained when quenching, carries out tissue preparation to obtain good service performance.What the present invention obtained The end hardenability broadband value of pinion steel Steel Bar is less than 4HRC.
Therefore, pinion steel Steel Bar provided by the present invention has preferable end hardenability.Simultaneously at production. art letter Single, cost is relatively low.
Specific embodiment
Example embodiments are described in detail here.Embodiment described in following exemplary embodiment Do not represent all embodiments consistented with the present invention.On the contrary, they are only detailed with the institute in such as the appended claims The example of device and method stating, some aspects of the invention are consistent.
As the first aspect of the invention, a kind of pinion steel Steel Bar is provided, wherein the pinion steel Steel Bar Chemical component including following mass percent:
C:0.17%~0.24%;
Mn:0.85%~1.07%;
Si:0.19%~0.30%;
Cr:0.98%~1.10%;
Mo:0.05%~0.10%;
Ni:0.15%~0.25%;
Al:0.01%~0.05%;
P: less than 0.02%;
S: less than 0.02%;
Surplus is Fe, and the mass ratio of pinion steel Steel Bar the kind Mn and Si are between 3.5 to 4.0.
Pinion steel Steel Bar provided by the present invention belongs to low-carbon and low-alloy micro alloyed steel.Why it is referred to as pinion steel Steel Bar is because steel provided by the present invention needs to be processed into bar.
The increase of C content in steel, can reduce the critical cooling rate of steel, thus increase the harden ability of steel, but C contains Amount has been more than when the C content of eutectoid reaction occurs, then with the increase of C content, the harden ability of steel can then be reduced.
The content for increasing Mn in steel can postpone the austenite transformation of steel, increase the harden ability of steel, but Mn is generated in steel Harden ability can be reduced when Mn S.
Ni is austenite former, can postpone the phase transformation of austenite, improves the harden ability of steel.Limit the quality of Ni Score is 0.15%~0.25%, in order to keep the low temperature of steel wilful and intensity index.
Mo can postpone the transformation of austenite phase transformation product pearlite, to improve the harden ability of steel.
The harden ability of steel can be improved in Cr, and high-intensitive martensitic structure is formed in steel.After different temperatures is tempered It can get different obdurability combinations, meet different service condition demands.In addition, Cr can also play refinement crystal grain and more with carbide Dissipate the effect strengthened.In the present invention, the mass ratio of Cr is 0.98%~1.10%, to keep while improving the intensity of steel The welding performance of steel.
As the second aspect of the invention, a kind of rod iron is provided, wherein the rod iron is by provided by the present invention above-mentioned Pinion steel Steel Bar is made.
Since the pinion steel Steel Bar has good end hardenability, the rod iron has good end End quenching permeability.
As the third aspect of the invention, a kind of preparation method of pinion steel Steel Bar is provided, wherein the gear Steel rod iron is said gear steel Steel Bar provided by the present invention, and the preparation method includes:
It is smelted using the raw material of the pinion steel Steel Bar, to obtain to cast steel water;
Continuous casting is carried out to cast steel water to described, to obtain steel billet;
To the steel billet carry out continuous rolling, wherein start rolling temperature be 1050-1100 DEG C, finishing temperature be 950 DEG C- 1000℃;
It is air-cooled for room temperature that rear product will be rolled;
In continuous casting process, whole process protection is needed to cast.In the art, protective casting refers to the steel being exposed in air Liquid takes protection, a kind of important technical measures aoxidized to avoid molten steel by air secondary.
Preferably, it is air-cooled that the preparation method, which includes to the roll product type of cooling,.Using it is air-cooled to roll product into Row cooling can also reduce the cost for manufacturing the pinion steel Steel Bar;
In order to improve the performance of the pinion steel Steel Bar, it is preferable that the preparation method further include:
Roll product after cooling is heat-treated, comprising:
Roll product after cooling is heated to 900 DEG C, soaking time is 30mins (minute);
Then for water cooling to 300 DEG C, cooling time is 10mins (minute);
Product after cooling is subjected to tempering again, tempering temperature is 400 DEG C, soaking time 80mins, finally To required rod iron.
Embodiment 1
In the present invention, the smelting of raw material is carried out using 100 tons of electric arc furnaces, is refined using 100 tons of LF and VD.Utilize with Lower section method prepares pinion steel Steel Bar:
S1, to iron ore carry out blast furnace process obtain it is blast-melted, blast-melted weight be 40 tons;
S2, it is blended into arc melting by blast-melted, obtains initial molten steel, ferroalloy is added and carries out alloy into ladle Change, then LF and VD is carried out to the molten steel after the alloying and is refined, wherein blast furnace molten steel and iron are closed using 100 tons of electric arc furnaces Gold carries out melting, and ferroalloy is Antaciron (FeSi75), manganeisen (FeMn68C4.0), ferrochrome (FeCr50C1.0), dilval (FeNi50) and ferro-molybdenum (FeMo70), purity are 99.7%, and weight is respectively 1500Kg, 3500Kg, 3500Kg, 800Kg, 400Kg, remaining is molten iron and steel scrap;
S3, the molten steel after melting is refined using 100 tons of LF and VD;
S4, continuous casting obtain 165x165mm2Square billet and pinion steel Steel Bar;
S5, start rolling temperature are 1050 DEG C, and finishing temperature is 950 DEG C;Continuous rolling at required specification rod iron, it is then empty It is cooled to room temperature;
S6, heating temperature be 900 DEG C, keep the temperature 30mins;
S7, water cooling temperature are 300 DEG C, and the water cooling time is 10mins;
S8, tempering temperature be 400 DEG C, soaking time 80mins obtains final product;
S9, the detection by direct reading spectrometry, chemistry becomes and mass percent are as follows: C:0.22%;Mn:0.98%; Si:0.25%;Cr:0.98%;Mo:0.09%;Ni:0.23%;Al:0.02%;P: less than 0.02%;S: less than 0.02%; Surplus is Fe, and the mass ratio of pinion steel Steel Bar the kind Mn and Si are 3.92.
S10, through detecting, pinion steel Steel Bar end hardenability broadband value made from method provided by the present invention is 4HRC。
Embodiment 2
In the present invention, the smelting of raw material is carried out using 100 tons of electric arc furnaces, is refined using 100 tons of LF and VD.Utilize with Lower section method prepares pinion steel Steel Bar:
S1, to iron ore carry out blast furnace process obtain it is blast-melted, blast-melted weight be 42 tons;
S2, it is blended into arc melting by blast-melted, obtains initial molten steel, ferroalloy is added and carries out alloy into ladle Change, then LF and VD is carried out to the molten steel after the alloying and is refined, wherein blast furnace molten steel and iron are closed using 100 tons of electric arc furnaces Gold carries out melting, and ferroalloy is Antaciron (FeSi75), manganeisen (FeMn68C4.0), ferrochrome (FeCr50C1.0), dilval (FeNi50) and ferro-molybdenum (FeMo70), purity are 99.7%, and weight is respectively 1500Kg, 3500Kg, 3500Kg, 800Kg, 400Kg, remaining is molten iron and steel scrap;
S3, the molten steel after melting is refined using 100 tons of LF and VD;
S4, continuous casting obtain 165x165mm2Square billet and pinion steel Steel Bar;
S5, start rolling temperature are 1060 DEG C, and finishing temperature is 960 DEG C;Continuous rolling at required specification rod iron, it is then empty It is cooled to room temperature;
S6, heating temperature be 900 DEG C, keep the temperature 30mins;
S7, water cooling temperature are 300 DEG C, and the water cooling time is 10mins;
S8, tempering temperature be 400 DEG C, soaking time 80mins obtains final product;
S9, the detection by direct reading spectrometry, chemistry becomes and mass percent are as follows: C:0.18%;Mn:1.01%; Si:0.28%;Cr:1.05%;Mo:0.08%;Ni:0.20%;Al:0.03%;P: less than 0.02%;S: less than 0.02%; Surplus is Fe, and the mass ratio of pinion steel Steel Bar the kind Mn and Si are 3.61.
S10, through detecting, pinion steel Steel Bar end hardenability broadband value made from method provided by the present invention is 3.5HRC。
Embodiment 3
In the present invention, the smelting of raw material is carried out using 100 tons of electric arc furnaces, is refined using 100 tons of LF and VD.Utilize with Lower section method prepares pinion steel Steel Bar:
S1, to iron ore carry out blast furnace process obtain it is blast-melted, blast-melted weight be 50 tons;
S2, it is blended into arc melting by blast-melted, obtains initial molten steel, ferroalloy is added and carries out alloy into ladle Change, then LF and VD is carried out to the molten steel after the alloying and is refined, wherein blast furnace molten steel and iron are closed using 100 tons of electric arc furnaces Gold carries out melting, and ferroalloy is Antaciron (FeSi75), manganeisen (FeMn68C4.0), ferrochrome (FeCr50C1.0), dilval (FeNi50) and ferro-molybdenum (FeMo70), purity are 99.7%, and weight is respectively 1500Kg, 3500Kg, 3500Kg, 800Kg, 400Kg (weight can be adjusted according to the actual situation), remaining is molten iron and gives up Steel;
S3, the molten steel after melting is refined using 100 tons of LF and VD;
S4, continuous casting obtain 165x165mm2Square billet and pinion steel Steel Bar;
S5, start rolling temperature are 1080 DEG C, and finishing temperature is 990 DEG C;Continuous rolling at required specification rod iron, it is then empty It is cooled to room temperature;
S6, heating temperature be 900 DEG C, keep the temperature 30mins;
S7, water cooling temperature are 300 DEG C, and the water cooling time is 10mins;
S8, tempering temperature be 400 DEG C, soaking time 80mins obtains final product;
S9, the detection by direct reading spectrometry, chemistry becomes and mass percent are as follows: C:0.20%;Mn:1.05%; Si:0.28%;Cr:1.0%;Mo:0.07%;Ni:0.21%;Al:0.035%;P: less than 0.02%;S: less than 0.02%; Surplus is Fe, and the mass ratio of pinion steel Steel Bar the kind Mn and Si are 3.75.
S10, through detecting, pinion steel Steel Bar end hardenability broadband value made from method provided by the present invention is 3.0HRC。
The foregoing is merely some embodiments of the invention, the embodiment being not all of, ordinary skill people Any equivalent variation that member takes the technology of the present invention method by reading description of the invention, is right of the invention It is required that being covered.
Unaccomplished matter of the present invention is well-known technique.

Claims (3)

1. a kind of pinion steel Steel Bar, it is characterized in that the group of the pinion steel Steel Bar becomes the change of following mass percent It studies point: C:0.17%~0.24%;Mn:0.85%~1.07%;Si:0.19%~0.30%;Cr:0.98%~ 1.10%;Mo:0.05%~0.10%;Ni:0.15%~0.25%;Al:0.01%~0.05%;P: less than 0.02%;S: Less than 0.02%;Surplus is Fe;The mass ratio of pinion steel the Steel Bar Mn and Si are 3.5~4.0.
2. the preparation method of pinion steel Steel Bar as described in claim 1, it is characterised in that: the following steps are included:
(1) according to the composition and ratio of the pinion steel Steel Bar, it is blended into arc melting by blast-melted, obtains initial steel Water is added ferroalloy and carries out alloying into ladle, then carries out LF and VD to the molten steel after the alloying and refine, to obtain It states to cast steel water;
The ferroalloy is Antaciron, manganeisen, ferrochrome, dilval and ferro-molybdenum;
(2) continuous casting will be carried out to cast steel water, and will obtain steel billet, i.e. Steel Bar.
3. a kind of preparation method of rod iron, which comprises the following steps:
(1) steel billet for preparing claim 2 carries out continuous rolling, is rolled into required specification rod iron;Wherein, start rolling temperature is 1050-1100 DEG C, finishing temperature is 950 DEG C to 1000 DEG C, and it is air-cooled for room temperature then will to roll rear product;
(2) roll product after cooling is heated to 900 DEG C, soaking time 30mins;Then water cooling is to 300 DEG C, when cooling Between be 10mins;Product after cooling is subjected to tempering again, tempering temperature is 400 DEG C, soaking time 80mins, finally Obtain required rod iron.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114855073A (en) * 2022-04-08 2022-08-05 张家港广大特材股份有限公司 High-quality die-cast wind power gear steel and preparation method thereof

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007321211A (en) * 2006-06-01 2007-12-13 Kobe Steel Ltd Hot-rolled material having superior properties of preventing crystal grain from coarsening when carburized at high temperature
CN101289731A (en) * 2008-05-09 2008-10-22 莱芜钢铁股份有限公司 CrMnTi narrow hardenability strip pinion steels and method of manufacture
CN102703817A (en) * 2012-06-29 2012-10-03 中天钢铁集团有限公司 Free-machining pinion steel and production technique thereof
JP2014037592A (en) * 2012-08-20 2014-02-27 Nippon Steel & Sumitomo Metal Hot rolled steel bar or wire
CN104372258A (en) * 2014-10-21 2015-02-25 山东钢铁股份有限公司 CrNiMo high-strength pinion steel and preparation method thereof
CN104911497A (en) * 2015-06-10 2015-09-16 本钢板材股份有限公司 Method for producing high-strength carburized gear steel 19CrNi5
CN106691113A (en) * 2015-11-16 2017-05-24 中国人民解放军军械工程学院 Variable-pitch trousers rack based on scissors fork mechanism
CN106929772A (en) * 2017-03-14 2017-07-07 河北工业大学 A kind of Steel Bar and preparation method thereof and rod iron
JP2017122270A (en) * 2016-01-08 2017-07-13 新日鐵住金株式会社 Steel for cold-worked component
CN108085578A (en) * 2017-12-22 2018-05-29 建龙北满特殊钢有限责任公司 A kind of automobile gear special steel and its production technology
CN109468532A (en) * 2018-11-06 2019-03-15 包头钢铁(集团)有限责任公司 A kind of transmission gear steel and its production method

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007321211A (en) * 2006-06-01 2007-12-13 Kobe Steel Ltd Hot-rolled material having superior properties of preventing crystal grain from coarsening when carburized at high temperature
CN101289731A (en) * 2008-05-09 2008-10-22 莱芜钢铁股份有限公司 CrMnTi narrow hardenability strip pinion steels and method of manufacture
CN102703817A (en) * 2012-06-29 2012-10-03 中天钢铁集团有限公司 Free-machining pinion steel and production technique thereof
JP2014037592A (en) * 2012-08-20 2014-02-27 Nippon Steel & Sumitomo Metal Hot rolled steel bar or wire
CN104372258A (en) * 2014-10-21 2015-02-25 山东钢铁股份有限公司 CrNiMo high-strength pinion steel and preparation method thereof
CN104911497A (en) * 2015-06-10 2015-09-16 本钢板材股份有限公司 Method for producing high-strength carburized gear steel 19CrNi5
CN106691113A (en) * 2015-11-16 2017-05-24 中国人民解放军军械工程学院 Variable-pitch trousers rack based on scissors fork mechanism
JP2017122270A (en) * 2016-01-08 2017-07-13 新日鐵住金株式会社 Steel for cold-worked component
CN106929772A (en) * 2017-03-14 2017-07-07 河北工业大学 A kind of Steel Bar and preparation method thereof and rod iron
CN108085578A (en) * 2017-12-22 2018-05-29 建龙北满特殊钢有限责任公司 A kind of automobile gear special steel and its production technology
CN109468532A (en) * 2018-11-06 2019-03-15 包头钢铁(集团)有限责任公司 A kind of transmission gear steel and its production method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114855073A (en) * 2022-04-08 2022-08-05 张家港广大特材股份有限公司 High-quality die-cast wind power gear steel and preparation method thereof

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