CN108531802A - A kind of copper mine CADI abrading-balls and preparation method thereof - Google Patents
A kind of copper mine CADI abrading-balls and preparation method thereof Download PDFInfo
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- CN108531802A CN108531802A CN201810489919.XA CN201810489919A CN108531802A CN 108531802 A CN108531802 A CN 108531802A CN 201810489919 A CN201810489919 A CN 201810489919A CN 108531802 A CN108531802 A CN 108531802A
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Classifications
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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
- C22C33/08—Making cast-iron alloys
- C22C33/10—Making cast-iron alloys including procedures for adding magnesium
-
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
- C21D1/19—Hardening; Quenching with or without subsequent tempering by interrupted quenching
- C21D1/20—Isothermal quenching, e.g. bainitic hardening
-
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
- C21D1/607—Molten salts
-
- 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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/36—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for balls; for rollers
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
- C22C37/04—Cast-iron alloys containing spheroidal graphite
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
- C22C37/06—Cast-iron alloys containing chromium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
- C22C37/10—Cast-iron alloys containing aluminium or silicon
-
- 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
Abstract
The present invention relates to a kind of copper mine CADI abrading-balls, are made by laxative remedy：Select the Q12 magnesium iron pig iron, by chemical composition supplying steel scrap, ferrosilicon, ferromanganese, copper, molybdenum-iron, ferrochrome and the vanadium iron of casting demand, it is smelted using medium-frequency induction furnace, metal type dies, dam-type spheroidising packet, bonded hard ferrite magnet reaches 1500 DEG C 1520 DEG C and comes out of the stove, and pours the processing of method spheroidization and inoculation.Spheroidising finishes, and is transferred to casting ladle and carries out sample cast, is handled using Multi inoculation when cast.Obtained sample is heat-treated, heat treatment process is：Austenitizing temperature is 890 DEG C-940 DEG C, and soaking time is 1.0-3.0h.Equal quenching temperature is 230 DEG C-270 DEG C, and isothermal time is 1.0-3.0h.Operation is simple by the present invention, materials chemistry elemental stable, and obtained abrading-ball has preferable wearability and impact flexibility.
Description
Technical field
The present invention relates to a kind of copper mine CADI abrading-balls and preparation method thereof.
Background technology
In wear-resistant material, abrading-ball accounts for the 80% of its total amount with liner plate, and abrading-ball accounts for 80% wherein.Abrading-ball is as grinding
Body is mainly used for the industries such as mine, cement, electric power, chemical industry.Domestic abrading-ball is consumed more than 2,600,000 tons/year, wherein mine abrading-ball
Total amount consumed is about at 1,600,000 tons/year.Its consumption and mine ore dressing, ore grinding and mine property are different in terms of Application in mining
And different, mineral aggregate consumption abrading-ball 0.5-1.2kg about per ton or so.Copper mine with ball mainly based on low Cr cast-iron grinding balls,
Its hardness is in 42-45HRC, impact toughness 3-5J/cm2.The reason of abrading-ball is because of wearability and toughness often occurs losing round and broken
Broken phenomenon needs often to shut down tip-in, constrains production, increase cost.Therefore, it develops a kind of with high-wearing feature and high-ductility
The new material of property（The austempering ductile iron of carbide-containing, abbreviation CADI）To substitute traditional Cr systems alloy cast iron material
Material, it will select well to manufacture abrading-ball with it, round and broken to reducing abrading-ball mistake, reduce ball consumption, realize abrading-ball product renewing
Regenerating has very real meaning.
Invention content
In order to solve the above problem and insufficient, the present invention provides a kind of copper mine CADI abrading-balls and preparation method thereof, obtained
Abrading-ball have preferable wearability and impact flexibility.
Technical solution provided by the invention is：A kind of copper mine CADI abrading-balls, are made by laxative remedy：
1, the melting of iron liquid and sample cast
The Q12 magnesium iron pig iron is selected, by chemical composition supplying steel scrap, ferrosilicon, ferromanganese, copper, molybdenum-iron, ferrochrome and the vanadium of casting demand
Iron, inovulant select FeSi75, nodulizer to select FeSiMg8RE3；It is smelted using medium-frequency induction furnace, metal type dies,
Dam-type spheroidising packet, while pouring side in molten iron and placing pretreating agent（Carry out purifying molten iron, reduces impurity content）.Iron liquid
Temperature reaches 1500 DEG C -1520 DEG C and comes out of the stove, and pours the processing of method spheroidization and inoculation.Spheroidising finishes, and is transferred to casting ladle progress sample and pours
Note is handled using Multi inoculation when cast.Chemical Composition Control is：C:3.4%~3.9%, Si：2.4%~2.9%, Mn：1.4%~
1.9%, S≤0.02%, P≤0.02%, Cu：0.3%~0.7%, Mo：0.1~0.4%, Cr：0.2%~0.6%, V≤0.2%, Mg：
0.045~0.055%, RE：0.02~0.04%.
2, sample heat treatment process
The sample heat treatment that step 1 is obtained, heat treatment process are：Austenitizing temperature is 890 DEG C -940 DEG C, soaking time
For 1.0-3.0h.Equal quenching temperature is 230 DEG C-270 DEG C, and isothermal time is 1.0-3.0h.Austempering medium is 50%KNO3
+ 40%NaNO2+10%NaNO3 mixed nitrates.
The present invention uses the Q12 pig iron, and for the common production magnesium iron pig iron, materials procurement is convenient.After alloying element is taken
Ferrochrome, ferromanganese and a small amount of vanadium iron are added when phase dispensing, passes through multielement complex intensifying, alloying element one side solution strengthening base
On the one hand body forms carbide and improves material hardness, improves the comprehensive performance of material.In addition, inventive formulation formed with Cr,
The elements such as Mn are main carbide, and carbide form is mainly（Cr7C3）、（Cr3C）、（Fe, Mn）3C etc..By this formula and work
Skill, operation is simple, materials chemistry elemental stable, does not lean on the residual alloying element of the pig iron, and alloying element is added by the later stage, protects
The stability of material, the stability of abrading-ball performance are demonstrate,proved.Furthermore the present invention is added when spheroidization and inoculation is handled in ladle
A certain amount of pretreating agent（Pretreating agent is INOCULIN390, addition 0.35%）, purifying molten iron reduces containing for impurity
Amount.
Description of the drawings
Fig. 1 is metallograph when material of the present invention does not corrode, measures Oxygen potential and nodulizing grade.
Fig. 2 is the metallographic structure figure after material heat treatment of the present invention.
Specific implementation mode
The copper mine of the present invention preparation method of CADI abrading-balls, includes the following steps：
1 ）The melting of iron liquid and sample cast
The Q12 magnesium iron pig iron is selected, by chemical composition supplying steel scrap, ferrosilicon, ferromanganese, copper, molybdenum-iron, ferrochrome and the vanadium of casting demand
Iron, inovulant select FeSi75, nodulizer to select FeSiMg8RE3；It is smelted using medium-frequency induction furnace, metal type dies,
Dam-type spheroidising packet, while pouring side in molten iron and placing pretreating agent（Pretreating agent is INOCULIN390, addition
It is the 0.35% of molten steel quality）；Bonded hard ferrite magnet reaches 1500 DEG C -1520 DEG C and comes out of the stove, and pours the processing of method spheroidization and inoculation.Spheroidising
It finishes, is transferred to casting ladle and carries out sample cast, when cast handles to obtain sample using Multi inoculation.The casting demand chemistry at
Point（Mass percent）Control is：C:3.4%~3.9%, Si：2.4%~2.9%, Mn：1.4%~1.9%, S≤0.02%, P≤
0.02%, Cu：0.3%~0.7%, Mo：0.1~0.4%, Cr：0.2%~0.6%, V≤0.2%, Mg：0.045~0.055%, RE：
0.02~0.04%；
2）The sample that step 1 obtains is thermally treated resulting in copper mine CADI abrading-balls, heat treatment process is：Austenitizing temperature is
890 DEG C-940 DEG C, soaking time is 1.0-3.0h, and equal quenching temperature is 230 DEG C-270 DEG C, and isothermal time is 1.0-3.0h,
Austempering medium is 50%KNO3+40%NaNO2+10%NaNO3 mixed nitrates.
3）Sample detects
Metallographic structure, mechanical property and performance are carried out to copper mine with CADI abrading-balls to detect.Testing result is as follows：
Copper mine CADI abrading-balls spheroidization such as Fig. 1：As shown in Figure 1（It is compared by national standard atlas by this figure, can obtain ball
Rate and sphere diameter order of magnitude）, 2 grades of Oxygen potential, 6 grades of sphere diameter.
Copper mine CADI abrading-balls metallographic structure such as Fig. 2：As shown in Figure 2, after heat treatment, metallic matrix be organized as lower bainite+
Retained austenite+carbide+graphite nodule.
2
Copper mine CADI abrading-ball comprehensive performances：Abrading-ball case hardness is 54-58HRC, the J/cm2 of impact toughness value >=8, and impact is tired
The labor service life（Falling sphere number）>=15000 times.
Embodiment one：
Smelting of iron and sample cast：The Q12 magnesium iron pig iron is selected, according to chemical composition（Mass percent）C:3.75%, Si：2.4%,
S≤0.02%, P≤0.02%, Mn：1.8%, Cu：0.4%, Mo：0.2%, Cr：0.35%, V：0.1%, Mg：0.05%, RE：0.03%,
Remaining is Fe and inevitable impurity, supplying steel scrap, ferrosilicon, ferromanganese, copper, molybdenum-iron, ferrochrome and vanadium iron, inovulant selection
FeSi75, nodulizer select FeSiMg8RE3；It is smelted using medium-frequency induction furnace, metal type dies, at dam-type nodularization
Reason packet, while pouring side in molten iron and placing pretreating agent（Pretreating agent is INOCULIN390, and addition is molten steel quality
0.35%）；Bonded hard ferrite magnet reaches 1500 DEG C -1520 DEG C and comes out of the stove, and pours the processing of method spheroidization and inoculation.Spheroidising finishes, and is transferred to casting ladle
Sample cast is carried out, using multiple when cast（A part of inovulant is stored in spheroidising packet, molten iron pours into nodularization by electric furnace
A part of inovulant is added when reaching 1/3-2/3 amounts in reason packet, when nodularization packet pours into pouring ladle molten iron with a part of inovulant of stream,
Storage is primary in pouring ladle, therefore the above preparation process is known as Multi inoculation）Inoculation obtains as cast condition abrading-ball.Then heat is carried out
Processing, obtains isothermal hardening abrading-ball.Isothermal quenching technique is：Austenitizing temperature is 910 DEG C, soaking time 2.0h.Etc. quenching
Temperature is 270 DEG C, isothermal time 2.0h.
2 grades of graphite nodule rate, sphere diameter size are 6 grades.Abrading-ball metallographic structure is：Lower bainite+retained austenite+carbide
+ graphite nodule.Abrading-ball hardness is 54HRC, and impact toughness value is 16J/cm2, impact fatigue life（Falling sphere number）>=15000 times,
With good wearability, impact flexibility and preferable comprehensive mechanical property.
Embodiment two：
According to chemical composition C:3.65%, Si：2.5%, S≤0.02%, P≤0.02%, Mn：1.6%, Cu：0.4%, Mo：0.2%, Cr：
0.5%, V：0.15%, Mg：0.05%, RE：0.03%, remaining is Fe and inevitable impurity, to carry out dispensing, by embodiment
One method carries out smelting and spheroidising and moulding by casting sample.Isothermal quenching technique is：Austenitizing temperature is 910 DEG C,
Soaking time is 2.0h.Equal quenching temperature is 230 DEG C, isothermal time 2.0h.
2 grades of graphite nodule rate, sphere diameter size are 6 grades.Abrading-ball metallographic structure is：Lower bainite+retained austenite+carbide
+ graphite nodule.Abrading-ball hardness is 58HRC, and impact toughness value is 8 J/cm2, impact fatigue life（Falling sphere number）>=15000 times,
With good wearability, impact flexibility and preferable comprehensive mechanical property.
Embodiment three：
According to chemical composition C:3.75%, Si：2.5%, S≤0.01%, P≤0.02%, Mn：1.7%, Cu：0.4%, Mo：0.2%, Cr：
0.43%, V：0.1%, Mg：0.05%, RE：0.03%, remaining is Fe and inevitable impurity, to carry out dispensing, by embodiment
One method carries out smelting and spheroidising and moulding by casting sample.Isothermal quenching technique is：Austenitizing temperature is 910 DEG C,
Soaking time is 2.0h.Equal quenching temperature is 250 DEG C, isothermal time 2.0h.
2 grades of graphite nodule rate, sphere diameter size are 6 grades.Abrading-ball metallographic structure is：Lower bainite+retained austenite+carbide
+ graphite nodule.Abrading-ball hardness is that 56.5HRC impact toughness values are 12J/cm2, impact fatigue life（Falling sphere number）>=15000 times,
With good wearability, impact flexibility and preferable comprehensive mechanical property.
4, CADI abrading-balls are compared with existing low Cr cast-iron grinding balls index
| Material quality of grinding balls | Hardness（HRC） | Impact toughness（J/cm²） | Fatigue life（Number） | Ball consumes（kg/t） |
| Low Cr cast irons | 42-46 | 3-5 | ≤7000 | 0.95-1.20 |
| CADI | 54-58 | 8-16 | ≥15000 | ≤0.6 |
5, the advantages of copper mine CADI abrading-balls and meaning
（1）The comprehensive mechanical property of CADI grinding ball materials is better than low Cr cast-iron grinding balls.Relatively low Cr abrading-balls, the ball consumption of CADI abrading-balls
It is greatly reduced.
（2）Impact fatigue life（Falling sphere number）>=15000 times, it is much larger than low Cr abrading-balls, fatigue resistance and fracture toughness
It is not broken in use, without peeling off, do not lose circle better than low Cr cast-iron grinding balls.
（3）The utilization rate of ball mill increases, and reduces the frequency for shutting down tip-in, reduces power consumption, reduce production cost.
（4）This kind of technique is easy to operate in process of production and control, properties of product stabilization are easy to utilize.
(5) abrading-ball prepared by the present invention is used for coloured mine（Copper mine）.It is a large amount of by saving instead of the low Cr abrading-balls of existing copper mine
The energy and resource.
Claims (3)
1. a kind of copper mine preparation method of CADI abrading-balls, includes the following steps：
1 ）The melting of iron liquid and sample cast
The Q12 magnesium iron pig iron is selected, by chemical composition supplying steel scrap, ferrosilicon, ferromanganese, copper, molybdenum-iron, ferrochrome and the vanadium of casting demand
Iron, inovulant select FeSi75, nodulizer to select FeSiMg8RE3；It is smelted using medium-frequency induction furnace, metal type dies,
Dam-type spheroidising packet, while pouring side in molten iron and placing pretreating agent；Bonded hard ferrite magnet reaches 1500 DEG C -1520 DEG C and goes out
Stove pours the processing of method spheroidization and inoculation；Spheroidising finishes, and is transferred to casting ladle and carries out sample cast, using at Multi inoculation when cast
Reason obtains sample；The chemical Composition Control of the casting demand is：C:3.4%~3.9%, Si：2.4%~2.9%, Mn：1.4%~
1.9%, S≤0.02%, P≤0.02%, Cu：0.3%~0.7%, Mo：0.1~0.4%, Cr：0.2%~0.6%, V≤0.2%, Mg：
0.045~0.055%, RE：0.02~0.04%；
2）The sample that step 1 obtains is thermally treated resulting in copper mine CADI abrading-balls, heat treatment process is：Austenitizing temperature is
890 DEG C-940 DEG C, soaking time is 1.0-3.0h, and equal quenching temperature is 230 DEG C-270 DEG C, and isothermal time is 1.0-3.0h,
Austempering medium is 50%KNO3+40%NaNO2+10%NaNO3 mixed nitrates.
2. preparation method according to claim 1, it is characterised in that：The pretreating agent is INOCULIN390, addition
It is 0.35%.
3. the copper mine CADI abrading-balls made from claims 1 or 2 the method.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109609730A (en) * | 2018-12-20 | 2019-04-12 | 宁国市华丰耐磨材料有限公司 | A kind of middle Cr grinding balls same temperature hardening heat treatment process |
| CN109706380A (en) * | 2019-01-04 | 2019-05-03 | 湖北宏伟成新型材料有限公司 | A kind of preparation method of CADI abrading-ball |
| CN110257695A (en) * | 2019-07-08 | 2019-09-20 | 北京工业大学 | A kind of cupric CADI wear-resistant material and its heat treatment process |
| CN113802049A (en) * | 2020-06-16 | 2021-12-17 | 美利林科技有限公司 | CADI (computer aided design) grinding ball casting process |
| CN113802047A (en) * | 2021-08-06 | 2021-12-17 | 西安理工大学 | Anti-sticking knife self-lubricating saw blade material for aluminum material cutting and preparation method of saw blade |
| CN116574874A (en) * | 2023-04-15 | 2023-08-11 | 盐城震业机械股份有限公司 | Preparation method of austempered ductile iron |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104152792A (en) * | 2014-08-16 | 2014-11-19 | 河北工业大学 | Ausferrite ductile cast iron grinding ball |
| CN104164616A (en) * | 2014-09-11 | 2014-11-26 | 罗建华 | High-toughness high-wear-resistance CADI nodular cast iron lining board |
| CN104233051A (en) * | 2014-08-30 | 2014-12-24 | 广东省工业技术研究院(广州有色金属研究院) | Carbide-containing ausferrite nodular cast iron and preparation method thereof |
-
2018
- 2018-05-21 CN CN201810489919.XA patent/CN108531802A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104152792A (en) * | 2014-08-16 | 2014-11-19 | 河北工业大学 | Ausferrite ductile cast iron grinding ball |
| CN104233051A (en) * | 2014-08-30 | 2014-12-24 | 广东省工业技术研究院(广州有色金属研究院) | Carbide-containing ausferrite nodular cast iron and preparation method thereof |
| CN104164616A (en) * | 2014-09-11 | 2014-11-26 | 罗建华 | High-toughness high-wear-resistance CADI nodular cast iron lining board |
Non-Patent Citations (1)
| Title |
|---|
| 陈子华: "球墨铸铁预处理技术原理及生产应用实例", 《现代铸铁》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109609730A (en) * | 2018-12-20 | 2019-04-12 | 宁国市华丰耐磨材料有限公司 | A kind of middle Cr grinding balls same temperature hardening heat treatment process |
| CN109706380A (en) * | 2019-01-04 | 2019-05-03 | 湖北宏伟成新型材料有限公司 | A kind of preparation method of CADI abrading-ball |
| CN110257695A (en) * | 2019-07-08 | 2019-09-20 | 北京工业大学 | A kind of cupric CADI wear-resistant material and its heat treatment process |
| CN110257695B (en) * | 2019-07-08 | 2020-07-17 | 北京工业大学 | Copper-containing CADI (copper-activated carbon dioxide) wear-resistant material and heat treatment process thereof |
| CN113802049A (en) * | 2020-06-16 | 2021-12-17 | 美利林科技有限公司 | CADI (computer aided design) grinding ball casting process |
| CN113802047A (en) * | 2021-08-06 | 2021-12-17 | 西安理工大学 | Anti-sticking knife self-lubricating saw blade material for aluminum material cutting and preparation method of saw blade |
| CN116574874A (en) * | 2023-04-15 | 2023-08-11 | 盐城震业机械股份有限公司 | Preparation method of austempered ductile iron |
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Application publication date: 20180914 |