CN106521323A - Medium-chromium alloy lining plate and manufacturing method thereof - Google Patents
Medium-chromium alloy lining plate and manufacturing method thereof Download PDFInfo
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- CN106521323A CN106521323A CN201611120431.7A CN201611120431A CN106521323A CN 106521323 A CN106521323 A CN 106521323A CN 201611120431 A CN201611120431 A CN 201611120431A CN 106521323 A CN106521323 A CN 106521323A
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- molten iron
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- alloy lining
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- 229910000599 Cr alloy Inorganic materials 0.000 title claims abstract description 41
- 239000000788 chromium alloy Substances 0.000 title claims abstract description 41
- 238000004519 manufacturing process Methods 0.000 title abstract description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 128
- 229910052742 iron Inorganic materials 0.000 claims abstract description 64
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 24
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910052796 boron Inorganic materials 0.000 claims abstract description 20
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims abstract description 15
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 15
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 15
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000011575 calcium Substances 0.000 claims abstract description 15
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 15
- 239000011777 magnesium Substances 0.000 claims abstract description 15
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 15
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 15
- 239000011733 molybdenum Substances 0.000 claims abstract description 15
- 229910052702 rhenium Inorganic materials 0.000 claims abstract description 15
- WUAPFZMCVAUBPE-UHFFFAOYSA-N rhenium atom Chemical compound [Re] WUAPFZMCVAUBPE-UHFFFAOYSA-N 0.000 claims abstract description 15
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims abstract description 13
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 12
- 239000011651 chromium Substances 0.000 claims abstract description 12
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 11
- 239000010703 silicon Substances 0.000 claims abstract description 10
- 238000010438 heat treatment Methods 0.000 claims description 27
- 229910052729 chemical element Inorganic materials 0.000 claims description 25
- 238000002360 preparation method Methods 0.000 claims description 16
- 239000002893 slag Substances 0.000 claims description 15
- 239000004411 aluminium Substances 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 12
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 9
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 9
- 229910052748 manganese Inorganic materials 0.000 claims description 8
- 239000011572 manganese Substances 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 238000002844 melting Methods 0.000 claims description 7
- 230000008018 melting Effects 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 229910000519 Ferrosilicon Inorganic materials 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 238000010791 quenching Methods 0.000 claims description 6
- 230000000171 quenching effect Effects 0.000 claims description 6
- 229910000604 Ferrochrome Inorganic materials 0.000 claims description 5
- 229910000616 Ferromanganese Inorganic materials 0.000 claims description 5
- 229910000805 Pig iron Inorganic materials 0.000 claims description 5
- 238000004140 cleaning Methods 0.000 claims description 5
- 238000009413 insulation Methods 0.000 claims description 5
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 claims description 5
- 239000000155 melt Substances 0.000 claims description 5
- 230000000630 rising effect Effects 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 5
- 239000000126 substance Substances 0.000 abstract description 2
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 7
- 229910045601 alloy Inorganic materials 0.000 description 6
- 239000000956 alloy Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 230000003647 oxidation Effects 0.000 description 5
- 238000007254 oxidation reaction Methods 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 229910001018 Cast iron Inorganic materials 0.000 description 3
- 229910000617 Mangalloy Inorganic materials 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 3
- 238000005266 casting Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000010813 municipal solid waste Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 229910052582 BN Inorganic materials 0.000 description 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000003026 anti-oxygenic effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001639 boron compounds Chemical class 0.000 description 1
- 229910052810 boron oxide Inorganic materials 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005087 graphitization Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
- 238000002076 thermal analysis method Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Classifications
-
- 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
- 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
-
- 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
- C21D9/0081—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for slabs; for billets
-
- 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
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/32—Ferrous alloys, e.g. steel alloys containing chromium with boron
Abstract
The invention discloses a medium-chromium alloy lining plate. The medium-chromium alloy lining plate comprises chemical elemental components including, by weight, 6.2-6.8% of chromium, 1.15-1.55% of carbon, 0.7-0.95% of manganese, 0.45-0.55 of aluminum, 0.75-0.8% of silicon, 0.3-0.45% of magnesium, 0.1-0.3% of calcium, 0.8-0.9% of molybdenum, 0.003-0.005% of boron, 0.065-0.075% of rhenium, and the balance iron. The invention also discloses a manufacturing method of the medium-chromium alloy lining plate. The production cost is low. The manufacturing method is simple. The service life of the manufactured medium-chromium alloy lining plate is long. Energy is effectively saved. The lining plate replacement frequency of an enterprise is reduced. The labor intensity is reduced. The running efficiency of a large ball grinding mill is improved. Economic benefits of the enterprise are also further increased.
Description
Technical field
The present invention relates to a kind of alloy lining and preparation method thereof, more particularly to a kind of middle chromium alloy lining plate and its making side
Method, belongs to machinery manufacturing technology field.
Background technology
Ball mill is after material is broken, then the key equipment crushed, be widely applied to power plant, cement,
The industries such as mine, chemical industry, refractory material, the liner plate installed on ball grinder interior wall are to ensure ball mill smooth long term running
Critical component, Main Function are to protect that ball grinder interior wall is not ground body and material is worn and torn, meanwhile, liner plate not only needs
The impact and abrasion that abrasive body and material can be born is outer, will also play the role of to lift abrasive body, with material grinding technology
Fast development, ball mill become and give maximization, it is also proposed higher requirement to the performance of lining material, and it is to grind to improve its wearability
The emphasis studied carefully；At present the liner plate selection majority of country's large-size ball mill adopts potassium steel, but from the point of view of service condition, and which is actual to make
With short life, broken, high cost, and high manganese steel lining plate flow drag is relatively low in use, is easily deformed, and causes liner plate
Between be mutually twisted, repair demolition is difficult, so as to affect ball mill to operate, therefore, in order to extend liner plate service life, improve big
Type ball mill running efficiency, improves Business Economic Benefit, is badly in need of studying a kind of not only wear-resisting but also reliable lining material.
The content of the invention
To solve the deficiencies in the prior art, the present invention provides a kind of middle chromium alloy lining plate, with hardness height, good toughness, resistance to
The mill property good characteristic of good, resistance to impact, its structure property is well beyond conventional alloys abrasion-proof backing block, and the present invention is meanwhile disclosed
The preparation method of chromium alloy lining plate in this kind, low production cost, preparation method are simple, and obtained middle chromium alloy lining plate uses the longevity
Life length, improves large-size ball mill running efficiency, and the economic benefit of enterprise has also obtained further increasing.
The technical solution adopted in the present invention is：
A kind of middle chromium alloy lining plate, contained chemical element component and its percentage by weight are：Chromium 6.2 6.8%, carbon 1.15
1.55%th, manganese 0.7 0.95%, aluminium 0.45 0.55%, silicon 0.75 0.8%, magnesium 0.3 0.45%, calcium 0.1 0.3%, molybdenum
0.8 0.9%, boron 0.003 0.005%, rhenium 0.065 0.075%, balance of iron.
As a kind of further preferred, chemical element component contained by chromium alloy lining plate in this of middle chromium alloy lining plate of the present invention
And its percentage by weight is preferably：Chromium 6.5%, carbon 1.4%, manganese 0.9%, aluminium 0.5%, silicon 0.8%, magnesium 0.4%, calcium 0.2%, molybdenum
0.85%th, boron 0.004%, rhenium 0.07%, balance of iron.
A kind of preparation method of middle chromium alloy lining plate, comprises the following steps：
（1）Melting：The dry steel scrap of cleaning and the pig iron are pressed into 1:1.5 ratio carries out heating fusing, molten iron temperature in adding furnace
Degree removes slag when rising to 1,480 1520 DEG C, then sequentially add have been warmed up ferrochrome, ferromanganese, ferrosilicon, in molten iron temperature
Remove slag when reaching 1,550 1560 DEG C again, then sequentially add have been warmed up carbon, aluminium, magnesium, calcium, molybdenum, every kind of composition
The time interval of addition is 5 minutes, after which all melts adds ferro-boron, when molten iron temperature reaches 1590 DEG C, adds rhenium simultaneously
Stop heating；
（2）Cast：When molten iron temperature is down to below 1530 DEG C, molten iron is poured in liner plate ingot mould；
（3）Heat treatment：When liner plate cast(ing) surface temperature be less than 650 DEG C when, by liner plate foundry goods from the demoulding in liner plate ingot mould simultaneously
It is put in heat-treatment furnace, heat treatment in-furnace temperature rises to 850 DEG C, is then incubated 2.5 hours, then is cooled to 580 DEG C, and insulation 1 is little
When, after Quenching Treatment again at 280 DEG C be tempered 2-3 hours, be then heated to 680 DEG C, be incubated 3-4 hours, it is finally heated extremely
945 DEG C, 7.5 hours are incubated, then are air cooled to room temperature.
As a kind of the further preferred of preparation method of middle chromium alloy lining plate, in step（1）Described addition ferro-boron it
It is front also to include the step of removing slag.
As a kind of the further preferred of preparation method of middle chromium alloy lining plate, in step（2）Before described cast also
Including quick thermoanalytical step is carried out to molten iron chemical element component in furnace, in furnace, molten iron chemical element component is qualified then
Cast, unqualified, in adjustment furnace, molten iron chemical element component is poured into a mould again to qualified；Molten iron chemical element component stokehold is quick
Thermoanalysis technology is with the setting temperature curve of structure of cast iron forming process as measurand, by computer to setting temperature curve
The row that spouts is parsed, so as to calculate the carbon equivalent of molten iron discharging（CE%）, carbon content（C%）And silicone content（Si%）Etc. the cast-iron stove of index
Front quick analytical technology, certainty of measurement can reach CE | O.1O%, C | 0.05%, Si | 0.l0%, it is widely used in Cast Iron Production
On-line measurement.
As a kind of further preferred, step of the preparation method of middle chromium alloy lining plate（2）Described molten iron is poured into lining
Process in slab ingot mould is first slow cast, then fast to pour into a mould, last slow cast.
Used as a kind of the further preferred of preparation method of middle chromium alloy lining plate, the cast described in step (2) adopts bottom
Note method pours into molten iron in liner plate ingot mould；The pouring procedure fills type steadily, and impulsive force is little, and molten iron oxidation is few.
The Main Function of carbon and chromium in chemical element component be ensure liner plate foundry goods in carbide quantity and form, carbon with
Iron and manganese form stable compound, improve its hardness and wearability by being heat-treated, and carbon produces synergy with other elements,
Improve the combination property of liner plate foundry goods；Chromium improves the overall intensity of liner plate foundry goods and hardness, with good corrosion resistance and
Antioxygenic property, prevents graphitization, improves quenching degree；Manganese is intensified element, incorporates ferrite, strengthens matrix, can refine group
Knit, improve the intensity and hardness of liner plate foundry goods, and wearability；Silicon is deoxidant element, as silicon and oxygen are easy to be combined to two
Silica, so ferrosilicon is usually used in deoxidier when making steel, simultaneously because silica releases substantial amounts of heat when generating, in deoxidation
While, it is also advantageous to improving molten iron temperature；Boron is a kind of and the stronger element of oxygen and nitrogen affinity, is easily given birth in molten iron
Due effect is lost into after the boron compound such as boron oxide and boron nitride, therefore to prevent the oxidation and nitridation of boron, it is ensured that boron
Absorptivity after addition is improved, and successively adds the measure of the carbon having been warmed up, aluminium, magnesium, calcium, molybdenum to carry out before adding boron
Depth deoxidation, is played the effect of boron；Carbon, aluminium, magnesium, calcium have stronger deoxidation, desulfurization, carburetting ability, to changing lining
Thing fractions distribution is pressed from both sides in plate foundry goods, crystal grain thinning improves the mechanical performance of liner plate foundry goods, and the quality for improving liner plate foundry goods has weight
Act on；Molybdenum increases the intensity of liner plate foundry goods and hardness, strain-hardening performance enhancement, so as to improve abrasion-resistance；Rhenium can change
The toughness and wearability of kind liner plate foundry goods, adds rhenium to carry out Metamorphism treatment, makes the crystal grain refinement of liner plate foundry goods, and field trash is uniformly more
Distribution is dissipated, pattern weakens isolate effect of the field trash to liner plate foundry goods based on spherical.
The beneficial effects of the present invention is：Reset the chemical element component and its weight hundred contained by chromium alloy lining plate
Divide ratio, and targetedly have adjusted melting, cast and Technology for Heating Processing, significantly improve the resistance to of obtained middle chromium alloy lining plate
Mill property, and obtained middle chromium alloy lining plate also improves its toughness while wearability is improved, and meets large-size ball mill lining
The impact resistance of plate, with hardness height, good toughness, the characteristic that wearability is good, resistance to impact is good, its structure property is well beyond biography
System alloy wear resistant lining plate, low production cost, preparation method are simple, and obtained middle chromium alloy lining plate long service life is effectively save
The energy, reduces the frequency that enterprise changes liner plate, reduces labour intensity, improve large-size ball mill running efficiency, enterprise
Economic benefit also obtained further increasing.
Specific embodiment：
Specific introduction is done to the present invention with reference to embodiment.
Embodiment one
A kind of middle chromium alloy lining plate, contained chemical element component and its percentage by weight are：Chromium 6.2%, carbon 1.15%, manganese 0.7%,
Aluminium 0.45%, silicon 0.75%, magnesium 0.3%, calcium 0.1%, molybdenum 0.8%, boron 0.003%, rhenium 0.065%, balance of iron；Make above-mentioned middle chromium
The method of alloy lining, comprises the following steps：
（1）Melting：The dry steel scrap of cleaning and the pig iron are pressed into 1:1.5 ratio carries out heating fusing, molten iron temperature in adding furnace
Degree removes slag when rising to 1480 DEG C, then sequentially add have been warmed up ferrochrome, ferromanganese, ferrosilicon, reach in molten iron temperature
Remove slag when 1550 DEG C again, then sequentially add have been warmed up carbon, aluminium, magnesium, calcium, molybdenum, the time that every kind of composition is added
At intervals of 5 minutes, after which all melts, slag is removed, add ferro-boron, when molten iron temperature reaches 1590 DEG C, add rhenium simultaneously
Stop heating；Quick heat analysis are carried out to molten iron chemical element component in furnace, molten iron chemical element component is qualified then in furnace
Cast, unqualified, in adjustment furnace, molten iron chemical element component is poured into a mould again to qualified；
（2）Cast：When molten iron temperature is down to below 1530 DEG C, molten iron is poured in liner plate ingot mould, casting process is first slow
Cast, it is then fast to pour into a mould, it is last slowly to pour into a mould；And molten iron is poured into liner plate ingot mould using bottom running by the cast in the present embodiment
It is interior；The pouring procedure fills type steadily, and impulsive force is little, and molten iron oxidation is few；
（3）Heat treatment：When liner plate cast(ing) surface temperature be less than 650 DEG C when, by liner plate foundry goods from the demoulding in liner plate ingot mould simultaneously
It is put in heat-treatment furnace, heat treatment in-furnace temperature rises to 850 DEG C, is then incubated 2.5 hours, then is cooled to 580 DEG C, and insulation 1 is little
When, it is tempered 2 hours at 280 DEG C after Quenching Treatment again, is then heated to 680 DEG C, is incubated 3 hours, it is finally heated to 945 DEG C,
7.5 hours are incubated, then are air cooled to room temperature and obtain middle chromium alloy lining plate.
Embodiment two
A kind of middle chromium alloy lining plate, contained chemical element component and its percentage by weight are：Chromium 6.8%, carbon 1.55%, manganese 0.95%,
Aluminium 0.55%, silicon 0.8%, magnesium 0.45%, calcium 0.3%, molybdenum 0.9%, boron 0.005%, rhenium 0.075%, balance of iron；Make above-mentioned middle chromium
The method of alloy lining, comprises the following steps：
（1）Melting：The dry steel scrap of cleaning and the pig iron are pressed into 1:1.5 ratio carries out heating fusing, molten iron temperature in adding furnace
Degree removes slag when rising to 1520 DEG C, then sequentially add have been warmed up ferrochrome, ferromanganese, ferrosilicon, reach in molten iron temperature
Remove slag when 1560 DEG C again, then sequentially add have been warmed up carbon, aluminium, magnesium, calcium, molybdenum, the time that every kind of composition is added
At intervals of 5 minutes, after which all melts, slag is removed, add ferro-boron, when molten iron temperature reaches 1590 DEG C, add rhenium simultaneously
Stop heating；Quick heat analysis are carried out to molten iron chemical element component in furnace, molten iron chemical element component is qualified then in furnace
Cast, unqualified, in adjustment furnace, molten iron chemical element component is poured into a mould again to qualified；
（2）Cast：When molten iron temperature is down to below 1530 DEG C, molten iron is poured in liner plate ingot mould, casting process is first slow
Cast, it is then fast to pour into a mould, it is last slowly to pour into a mould；And molten iron is poured into liner plate ingot mould using bottom running by the cast in the present embodiment
It is interior；The pouring procedure fills type steadily, and impulsive force is little, and molten iron oxidation is few；
（3）Heat treatment：When liner plate cast(ing) surface temperature be less than 650 DEG C when, by liner plate foundry goods from the demoulding in liner plate ingot mould simultaneously
It is put in heat-treatment furnace, heat treatment in-furnace temperature rises to 850 DEG C, is then incubated 2.5 hours, then is cooled to 580 DEG C, and insulation 1 is little
When, it is tempered 3 hours at 280 DEG C after Quenching Treatment again, is then heated to 680 DEG C, is incubated 4 hours, it is finally heated to 945 DEG C,
7.5 hours are incubated, then are air cooled to room temperature and obtain middle chromium alloy lining plate.
Embodiment three
A kind of middle chromium alloy lining plate, contained chemical element component and its percentage by weight are：Chromium 6.5%, carbon 1.4%, manganese 0.9%, aluminium
0.5%th, silicon 0.8%, magnesium 0.4%, calcium 0.2%, molybdenum 0.85%, boron 0.004%, rhenium 0.07%, balance of iron；Make above-mentioned middle evanohm
The method of liner plate, comprises the following steps：
（1）Melting：The dry steel scrap of cleaning and the pig iron are pressed into 1:1.5 ratio carries out heating fusing, molten iron temperature in adding furnace
Degree removes slag when rising to 1500 DEG C, then sequentially add have been warmed up ferrochrome, ferromanganese, ferrosilicon, reach in molten iron temperature
Remove slag when 1550 DEG C again, then sequentially add have been warmed up carbon, aluminium, magnesium, calcium, molybdenum, the time that every kind of composition is added
At intervals of 5 minutes, after which all melts, slag is removed, add ferro-boron, when molten iron temperature reaches 1590 DEG C, add rhenium simultaneously
Stop heating；Quick heat analysis are carried out to molten iron chemical element component in furnace, molten iron chemical element component is qualified then in furnace
Cast, unqualified, in adjustment furnace, molten iron chemical element component is poured into a mould again to qualified；
（2）Cast：When molten iron temperature is down to below 1530 DEG C, molten iron is poured in liner plate ingot mould, casting process is first slow
Cast, it is then fast to pour into a mould, it is last slowly to pour into a mould；And molten iron is poured into liner plate ingot mould using bottom running by the cast in the present embodiment
It is interior；The pouring procedure fills type steadily, and impulsive force is little, and molten iron oxidation is few；
（3）Heat treatment：When liner plate cast(ing) surface temperature be less than 650 DEG C when, by liner plate foundry goods from the demoulding in liner plate ingot mould simultaneously
It is put in heat-treatment furnace, heat treatment in-furnace temperature rises to 850 DEG C, is then incubated 2.5 hours, then is cooled to 580 DEG C, and insulation 1 is little
When, after Quenching Treatment again at 280 DEG C be tempered 2.5 hours, be then heated to 680 DEG C, be incubated 3.5 hours, it is finally heated extremely
945 DEG C, 7.5 hours are incubated, then are air cooled to room temperature and are obtained middle chromium alloy lining plate.
The properties of the middle chromium alloy lining plate obtained by embodiment one to three and existing high manganese steel lining plate are to such as 1 institute of table
Show：
Table 1
According to table 1, the properties of the middle chromium alloy lining plate obtained by the present invention are significantly better than existing high manganese steel lining plate, tool
There are hardness height, good toughness, the characteristic that wearability is good, resistance to impact is good, long service life.
The present invention resets the chemical element component and its percentage by weight contained by middle chromium alloy lining plate, and targetedly
Melting, cast and Technology for Heating Processing are have adjusted, the wearability of obtained middle chromium alloy lining plate is significantly improved, and it is obtained
Middle chromium alloy lining plate also improves its toughness while wearability is improved, and meets the impact resistance of large-size ball mill liner plate, has
Have hardness height, good toughness, the characteristic that wearability is good, resistance to impact is good, its structure property well beyond conventional alloys abrasion-proof backing block,
Low production cost, preparation method are simple, and obtained middle chromium alloy lining plate long service life is effectively saved the energy, reduces enterprise
Industry changes the frequency of liner plate, reduces labour intensity, improves large-size ball mill running efficiency, and the economic benefit of enterprise is also obtained
Further increase.
The above is only the preferred embodiment of patent of the present invention, it is noted that for the common skill of the art
For art personnel, on the premise of without departing from patent principle of the present invention, some improvements and modifications can also be made, these improve and
Retouching also should be regarded as the protection domain of patent of the present invention.
Claims (7)
1. a kind of middle chromium alloy lining plate, it is characterised in that：Contained chemical element component and its percentage by weight are：Chromium 6.2
6.8%th, carbon 1.15 1.55%, manganese 0.7 0.95%, aluminium 0.45 0.55%, silicon 0.75 0.8%, magnesium 0.3 0.45%, calcium
0.1 0.3%, molybdenum 0.8 0.9%, boron 0.003 0.005%, rhenium 0.065 0.075%, balance of iron.
2. a kind of middle chromium alloy lining plate according to claim 1, it is characterised in that contained chemical element component and its weight
Percentage is preferably：Chromium 6.5%, carbon 1.4%, manganese 0.9%, aluminium 0.5%, silicon 0.8%, magnesium 0.4%, calcium 0.2%, molybdenum 0.85%, boron
0.004%th, rhenium 0.07%, balance of iron.
3. the preparation method of a kind of middle chromium alloy lining plate according to claim 1 and 2, it is characterised in that including following step
Suddenly：
（1）Melting：The dry steel scrap of cleaning and the pig iron are pressed into 1:1.5 ratio carries out heating fusing, molten iron temperature in adding furnace
Degree removes slag when rising to 1,480 1520 DEG C, then sequentially add have been warmed up ferrochrome, ferromanganese, ferrosilicon, in molten iron temperature
Remove slag when reaching 1,550 1560 DEG C again, then sequentially add have been warmed up carbon, aluminium, magnesium, calcium, molybdenum, every kind of composition
The time interval of addition is 5 minutes, after which all melts adds ferro-boron, when molten iron temperature reaches 1590 DEG C, adds rhenium simultaneously
Stop heating；
（2）Cast：When molten iron temperature is down to below 1530 DEG C, molten iron is poured in liner plate ingot mould；
（3）Heat treatment：When liner plate cast(ing) surface temperature be less than 650 DEG C when, by liner plate foundry goods from the demoulding in liner plate ingot mould simultaneously
It is put in heat-treatment furnace, heat treatment in-furnace temperature rises to 850 DEG C, is then incubated 2.5 hours, then is cooled to 580 DEG C, and insulation 1 is little
When, after Quenching Treatment again at 280 DEG C be tempered 2-3 hours, be then heated to 680 DEG C, be incubated 3-4 hours, it is finally heated extremely
945 DEG C, 7.5 hours are incubated, then are air cooled to room temperature.
4. the preparation method of a kind of middle chromium alloy lining plate according to claim 3, it is characterised in that in step（1）It is described
Addition ferro-boron before also include remove slag the step of.
5. the preparation method of a kind of middle chromium alloy lining plate according to claim 3, it is characterised in that in step（2）It is described
Cast before also include carrying out molten iron chemical element component in furnace quick thermoanalytical step, molten iron chemistry unit in furnace
Plain composition is qualified, pours into a mould, unqualified, and in adjustment furnace, molten iron chemical element component is poured into a mould again to qualified.
6. a kind of preparation method of middle chromium alloy lining plate according to claim 3, it is characterised in that step（2）Described
Process molten iron poured in liner plate ingot mould is first slow cast, is then poured into a mould soon, last slow cast.
7. the preparation method of a kind of middle chromium alloy lining plate according to claim 3, it is characterised in that step (2) is described
Cast molten iron is poured in liner plate ingot mould using bottom running.
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| CN112391586A (en) * | 2020-11-26 | 2021-02-23 | 衡阳鸿宇机械制造有限公司 | Preparation process of alloy lining plate |
| CN112522570A (en) * | 2020-10-27 | 2021-03-19 | 宁国东方碾磨材料股份有限公司 | Wear-resistant tough multi-element alloy cast ball and preparation method thereof |
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| CN105618210A (en) * | 2016-02-29 | 2016-06-01 | 安徽省宁国市华达耐磨材料有限公司 | Alloy lining plate of ball mill for desulfuration of power station |
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| JP2002161331A (en) * | 2000-11-20 | 2002-06-04 | Nippon Steel Corp | Outer layer material of composite roll for rolling made with centrifugal casting |
| CN105239012A (en) * | 2015-10-15 | 2016-01-13 | 中钢集团邢台机械轧辊有限公司 | Semi-high-speed steel cold rolling work roller high in accident resistance and manufacturing method of semi-high-speed steel cold rolling work roller |
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| CN108167312A (en) * | 2017-12-13 | 2018-06-15 | 溧阳东翼通用航空科技有限公司 | A kind of unmanned plane transmission shaft and its manufacturing method with Auxiliary support casing |
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| CN112522570A (en) * | 2020-10-27 | 2021-03-19 | 宁国东方碾磨材料股份有限公司 | Wear-resistant tough multi-element alloy cast ball and preparation method thereof |
| CN112391586A (en) * | 2020-11-26 | 2021-02-23 | 衡阳鸿宇机械制造有限公司 | Preparation process of alloy lining plate |
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Denomination of invention: A medium chromium alloy lining plate and its production method Effective date of registration: 20231017 Granted publication date: 20171219 Pledgee: Agricultural Bank of China Limited Jingjiang City Branch Pledgor: JIANGSU SHUANGXING SPECIAL STEEL CO.,LTD. Registration number: Y2023980061509 |
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