CN106834959B - The production method of high hardness wear-resisting ball material steel - Google Patents
The production method of high hardness wear-resisting ball material steel Download PDFInfo
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- CN106834959B CN106834959B CN201611234952.5A CN201611234952A CN106834959B CN 106834959 B CN106834959 B CN 106834959B CN 201611234952 A CN201611234952 A CN 201611234952A CN 106834959 B CN106834959 B CN 106834959B
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- steel
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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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
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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
- C22C33/04—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
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- 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
- C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
The invention discloses a kind of production methods of high hardness wear-resisting ball material steel, including molten iron pretreatment, converter smelting, LF refining, continuous casting, rolling.In the present invention, wear-resistant ball is low with steel production cost, and steel is uniform, cleanliness factor is high, the good combination properties such as wear-resisting.
Description
Technical field
The present invention relates to a kind of metallurgical and metal material technologies, specifically, are related to a kind of high hardness wear-resisting ball material steel
Production method.
Background technology
Wear-resistant ball is as the major product in wear resistance castings industry, and consumption is in wear resistance castings in occupation of first place, quilt
It is widely used in the material grinding production link of the industries such as metallurgical mine, building material cement, thermal power generation, magnetic material.Economical
Sustained and rapid development pushes the continuous development of the industries such as China mine, building material cement, electric power, large hydraulic engineering, high-speed railway,
The construction of the major projects such as extensive protection Comfortable Housing Project make the every profession and trades such as mine, building material cement, thermal power generation to wear-resistant ball,
The demand of section dramatically increases.Although high alloy steel ball wearability is fine, since high alloy ball milling mostly uses greatly mould with steel
Casting, it is low production efficiency, of high cost, the market demand cannot be met at all, it is therefore desirable to which production adapts to wearability and is better than carbon steel ball
And alloy content it is low, suitable for the novel high wear-resistant steel ball that produces greatly of industry.
Invention content
Technical problem solved by the invention is to provide a kind of production method of high hardness wear-resisting ball material steel, and wear-resistant ball is used
Steel production cost is low, and steel is uniform, cleanliness factor is high, the good combination properties such as wear-resisting.
Technical solution is as follows：
A kind of production method of high hardness wear-resisting ball material steel, including molten iron pretreatment, converter smelting, LF refining, continuous casting,
It rolls, in converter smelting, is less than or equal to 0.140% for converter molten iron phosphorus content, sulfur content is less than or equal to 0.060%；Converter is whole
1620-1638 DEG C of the tapping temperature of point molten steel, carbon content 0.011-0.019%, phosphorus content 0.011-0.022%；LF refining
1504-1525 DEG C of temperature in place, refines 1555-1585 DEG C of temperature of offing normal, and refining treatment time 39-85min is pressed in the refining later stage
Wear-resistant ball material is required that alloy is added with composition of steel；In continuous casting, the degree of superheat controls between 22-30 DEG C, and pulling rate is in 0.65m/
Between min；Finished steel chemical constituent includes C 0.55~0.70%, Si 1.65~1.90%, Mn 0.60 by weight percent
~0.80%, P≤0.025%, S≤0.025%, Al≤0.020%, Cr 0.60~0.90%, Ni≤0.03%, Mo≤
0.02%, Cu≤0.025%, As≤0.020%, Sn≤0.020%, Sb≤0.004%, Pb≤0.0025%, other is Fe
And impurity.
Further：Lime, dolomite, fluorite are added in converter steelmaking process, according to finished product wear-resistant ball in tapping process
Material requires addition ferrosilicon, silicomanganese and aluminium silicomanganese to carry out deoxidation alloying with composition of steel；The average tapping temperature of converter terminal molten steel
1628 DEG C, mean carbon content 0.014%, average phosphorous content 0.015%.
Further：Average 1517 DEG C of the temperature in place of LF refining, it is average to refine 1562 DEG C of temperature of offing normal, average refining treatment
Alloy is added by the composition of steel requirement of wear-resistant ball material in the refining later stage in time 63min.
Compared with prior art, the technology of the present invention effect includes：
In the present invention, wear-resistant ball is low with steel production cost, and steel is uniform, cleanliness factor is high, the good combination properties such as wear-resisting；And
Simple production process can guarantee quality of becoming a useful person, and improves lumber recovery and production efficiency, production cost are low.Matched by rational ingredient
Than that can realize the feasibility of continuous casting, reduce production cost and reduce environmental pollution, while improving high-end wear-resistant ball material product
The market competitiveness.
In the desired assay stage, year output is at 1000 tons or so.Economic profit increases high-end resistance at 100,000 yuan or more
Abrading-ball material steel new varieties, increase the competitiveness in market.
Specific implementation mode
It elaborates to technical solution of the present invention below with reference to example embodiment.However, example embodiment can
Implement in a variety of forms, and is not understood as limited to embodiment set forth herein；On the contrary, thesing embodiments are provided so that
The design of example embodiment more comprehensively and completely, and is comprehensively communicated to those skilled in the art by the present invention.
The production method of high hardness wear-resisting ball material steel, total technical solution include：Molten iron pretreatment, converter smelting, LF
(ladle refining furnace) refining, continuous casting, rolling.
1, converter producing
To ensure product quality and being accurately controlled to finished product ingredient, for the requirement of converter molten iron：Phosphorus contains by weight percent
Amount is less than or equal to 0.140%, and sulfur content is less than or equal to 0.060%.Lime, dolomite, fluorite are added in converter steelmaking process
Slag making auxiliary material is waited, ferrosilicon, silicomanganese and aluminium silicomanganese, which is added, with composition of steel requirement according to finished product wear-resistant ball material in tapping process is taken off
Oxygen alloy.
The carbon content of converter terminal molten steel, phosphorus content (mass percent) and tapping temperature are as follows：
1620-1638 DEG C of tapping temperature, it is 1628 DEG C average；Carbon content 0.011-0.019%, average 0.014%；Phosphorus content
0.011-0.022%, average 0.015%.
2, LF stoves produce
LF stoves refine 1504-1525 DEG C of temperature in place, 1517 DEG C average；1555-1585 DEG C of temperature of offing normal is refined, it is average
1562℃；Refining treatment time 39-85min, average 63min；And it is added by the composition of steel requirement of wear-resistant ball material in the refining later stage
Alloy.
3, continuous casting
Degree of superheat control is between 22-30 DEG C in continuous casting, and pulling rate is between 0.65m/min.
The hardness of hot-rolled state round steel is in 32-38HRC.
High hardness wear-resisting ball material steel, chemical constituent are by weight percent：C 0.55~0.70%, Si 1.65~
1.90%, Mn 0.60~0.80%, P≤0.025%, S≤0.025%, Al≤0.020%, Cr0.60~0.90%, Ni≤
0.03%, Mo≤0.02%, Cu≤0.025%, As≤0.020%, Sn≤0.020%, Sb≤0.004%, Pb≤
0.0025%, other is Fe and inevitable impurity.
Embodiment 1, industrial manufacture process is summarized as follows：
(1) converter producing
Lime 3400-5800kg, dolomite 2850-4800kg, iron sheet 2000- is added according to actual conditions when converter smelting
Silicon iron 500-1500kg, silicon manganese 1000-1800kg, high carbon ferro-chrome 100-1900kg are added in tapping process by 2500kg.
The carbon content of converter terminal molten steel, phosphorus content (mass percent) and tapping temperature are as shown in table 1.
The ingredient and temperature of 1 converter tapping of table
| Tapping temperature DEG C | Catch carbon content % | Tap phosphorus content % | |
| Minimum value | 1620 | 0.11 | 0.011 |
| Maximum value | 1638 | 0.19 | 0.022 |
| Average value | 1628 | 0.14 | 0.15 |
(2) LF stoves produce
The refining of LF stoves carries out plus auxiliary material slag making according to molten steel composition and temperature change, and adduction gold is finely adjusted and heats up behaviour
Make.Lime 250-500kg, fluorite 60-180kg, calcium carbide 150kg is added, alloy is finely adjusted ferrosilicon according to ingredient in place is refined
110-300kg, Si-Ca-Ba 150-250kg, high carbon ferro-chrome 100-1800kg, liquid steel temperature are shown in Table 2 with processing time.
Table 2 refines the control of LF furnace temperatures
| Refine temperature DEG C in place | Refine temperature DEG C of offing normal | Refining treatment time min | |
| Minimum value | 1504 | 1555 | 39 |
| Maximum value | 1525 | 1585 | 85 |
| Average value | 1517 | 1562 | 63 |
(3) continuous casting
Degree of superheat control is between 22-30 DEG C in continuous casting, and pulling rate is between 0.60m/min-0.65m/min, molten steel
Ingredient (mass percent) control it is as shown in table 4.
3 finished product ingredient (%) of table
| C | Si | Mn | P | S | Cr | |
| Minimum value | 0.55 | 1.78 | 0.72 | 0.017 | 0.004 | 0.69 |
| Maximum value | 0.59 | 1.90 | 0.75 | 0.024 | 0.011 | 0.71 |
| Average value | 0.58 | 1.82 | 0.73 | 0.017 | 0.007 | 0.70 |
(4) surface quality
Continuous casting billet enters burial pit slow cooling 48 hours or more, is examined after going out hole, continuous casting billet table surface quality fully meets production
The requirement of wear-resistant ball material.
Term used herein is explanation and term exemplary, and not restrictive.Since the present invention can be with a variety of
Form be embodied without departing from invention spirit or essence, it should therefore be appreciated that above-described embodiment be not limited to it is any above-mentioned
Details, and should widely being explained in the spirit and scope defined by appended claims, thus fall into claim or its etc.
Whole variations and remodeling in effect range all should be appended claims and covered.
Claims (3)
1. a kind of production method of high hardness wear-resisting ball material steel, including molten iron pretreatment, converter smelting, LF refining, continuous casting, roll
System, it is characterised in that：In converter smelting, it is less than or equal to 0.140% for converter molten iron phosphorus content, sulfur content is less than or equal to
0.060%；1620-1638 DEG C of the tapping temperature of converter terminal molten steel, carbon content 0.011-0.019%, phosphorus content 0.011-
0.022%；1504-1525 DEG C of the temperature in place of LF refining refines 1555-1585 DEG C of temperature of offing normal, refining treatment time 39-
Alloy is added by the composition of steel requirement of wear-resistant ball material in the refining later stage in 85min；In continuous casting, the degree of superheat is controlled at 22-30 DEG C
Between, pulling rate is between 0.65m/min；Finished steel chemical constituent includes C 0.55~0.70%, Si 1.65 by weight percent
~1.90%, Mn 0.60~0.80%, P≤0.025%, S≤0.025%, Al≤0.020%, Cr 0.60~0.90%, Ni
≤ 0.03%, Mo≤0.02%, Cu≤0.025%, As≤0.020%, Sn≤0.020%, Sb≤0.004%, Pb≤
0.0025%, other is Fe and impurity.
2. the production method of high hardness wear-resisting ball material steel as described in claim 1, it is characterised in that：In converter steelmaking process
Lime, dolomite, fluorite is added, is required with composition of steel according to finished product wear-resistant ball material in tapping process that ferrosilicon, silicomanganese and aluminium is added
Silicomanganese carries out deoxidation alloying；1628 DEG C of the average tapping temperature of converter terminal molten steel, mean carbon content 0.014%, average phosphorus
Content 0.015%.
3. the production method of high hardness wear-resisting ball material steel as described in claim 1, it is characterised in that：Being averaged for LF refining is in place
1517 DEG C of temperature, average to refine 1562 DEG C of temperature of offing normal, average refining treatment time 63min presses wear-resistant ball material in the refining later stage
It is required that alloy is added with composition of steel.
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| CN201611234952.5A CN106834959B (en) | 2016-12-28 | 2016-12-28 | The production method of high hardness wear-resisting ball material steel |
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| CN201611234952.5A CN106834959B (en) | 2016-12-28 | 2016-12-28 | The production method of high hardness wear-resisting ball material steel |
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| CN106834959A CN106834959A (en) | 2017-06-13 |
| CN106834959B true CN106834959B (en) | 2018-09-11 |
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| CN110952025A (en) * | 2019-11-15 | 2020-04-03 | 包头钢铁（集团）有限责任公司 | Mining wear-resistant KYNM500 steel and preparation method thereof |
| CN111118400A (en) * | 2020-02-24 | 2020-05-08 | 包头钢铁（集团）有限责任公司 | Mining wear-resistant KYNM450 steel and production method thereof |
| CN112239834B (en) * | 2020-09-02 | 2021-12-21 | 包头钢铁（集团）有限责任公司 | Steel for high-strength and high-wear-resistance rare earth ball mill hot-rolled steel balls and rolling method thereof |
| CN112342460A (en) * | 2020-09-03 | 2021-02-09 | 包头钢铁（集团）有限责任公司 | Steel for B2 high-end steel ball of ball mill and rolling method thereof |
| CN115323264B (en) * | 2022-07-12 | 2023-09-26 | 包头钢铁（集团）有限责任公司 | High-wear-resistance steel ball AK-B3 hot rolled round steel and production method thereof |
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| JP2002363698A (en) * | 2001-06-07 | 2002-12-18 | Nippon Steel Corp | Rail having excellent rolling fatigue damage resistance and wear resistance, and production method therefor |
| JP2003213372A (en) * | 2002-01-25 | 2003-07-30 | Sumitomo Denko Steel Wire Kk | Steel wire for spring and spring |
| RU2450079C1 (en) * | 2011-03-11 | 2012-05-10 | Закрытое акционерное общество "Научно-Производственная Компания Технология машиностроения и Объемно-поверхностная закалка" (ЗАО "НПК Техмаш и ОПЗ") | Structural steel for volume-surface hardening |
| JP2015025162A (en) * | 2013-07-25 | 2015-02-05 | 大同特殊鋼株式会社 | Ferrite pearlite type non-heat treated steel |
| CN104762562B (en) * | 2015-04-23 | 2017-01-18 | 山东钢铁股份有限公司 | Steel for large-diameter grinding balls and preparation method of steel |
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