CN104249504B - A kind of composite abrasion-proof inner plate, manufacture its antifriction alloy and the method manufacturing it - Google Patents
A kind of composite abrasion-proof inner plate, manufacture its antifriction alloy and the method manufacturing it Download PDFInfo
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Abstract
The invention discloses a kind of composite abrasion-proof inner plate, invention additionally discloses a kind of antifriction alloy manufacturing composite abrasion-proof inner plate and a kind of method manufacturing composite abrasion-proof inner plate, this composite abrasion-proof inner plate is composited by wearing layer and basic unit, the antifriction alloy that wherein wearing layer uses is by Cr, C, Si, Mn, S, P, Mo, Ni, Cu, Re and Fe mixes, and the manufacture method of this composite abrasion-proof inner plate, the mainly material of wearing layer and basic unit divides stove melting, cast molding the most again, the abrasion-proof composite plate wearability of this structure is good, use degree of adhesion between the composite abrasion-proof inner plate composite bed of the method manufacture high, it is greatly improved the service life of composite abrasion-proof inner plate.
Description
Technical field
The present invention relates to casting technology field, particularly to a kind of composite abrasion-proof inner plate, the invention still further relates to a kind of manufacture
The antifriction alloy of composite abrasion-proof inner plate and a kind of method manufacturing composite abrasion-proof inner plate.
Background technology
Abrasion-proof backing block refers to that wear-resisting steel plate passes through cutting, roll bending deformation, punches and the production technology such as welding processes respectively
Plant abrasion-proof backing block.Abrasion-proof backing block is widely used in many fields, particularly with pulverizing iron ore, aluminum ore, Gold Ore pulverizing
The difficult material pulverized such as colm, anthracite, the highest to wearability, the impact resistance of abrasion-proof backing block, the general lining used
Plate is made up of single metal material, and toughness is good, wears no resistance.
For strengthening the wearability of liner plate, have developed bimetal composite wear resistant liner plate, to improve the performance of abrasion-proof backing block, simultaneously
Reduce cost.But the metal selection of bimetal composite wear resistant liner plate, complex form difference, its performance also varies.
Existing bimetal composite wear resistant liner plate is to use welding or bonding method that high-abrasive material is fixed on base mostly
On body, this method welding or be adhesively fixed high-abrasive material, owing to bond strength is the highest and exists between high-abrasive material
The defects such as gap, easily cause high-abrasive material and come off, and have a strong impact on its service life.As with traditional casting technique by
The two combines, because high-abrasive material is the biggest with the physical property difference of matrix material, it may appear that matrix material melts
After change, high-abrasive material, owing to fusing point is higher and density is relatively low, always floats over this phenomenon of matrix material end face melted, because of
This, the two cannot be combined by existing casting technique equably.
Summary of the invention
The technical problem to be solved is to provide a kind of composite abrasion-proof inner plate improving wearability, for this present invention
Additionally provide a kind of antifriction alloy manufacturing composite abrasion-proof inner plate and a kind of method manufacturing composite abrasion-proof inner plate, existing to solve
There is the above-mentioned multinomial defect caused in technology.
For achieving the above object, the present invention provides following technical scheme: a kind of composite abrasion-proof inner plate, by wearing layer and base
Layer is composited, and wearing layer is made up of antifriction alloy, and basic unit is made up of high-ductility steel.
Preferably, described antifriction alloy is mixed by Cr, C, Si, Mn, S, P, Mo, Ni, Cu, Re and Fe.
Preferably, the one during described high-ductility steel is CA6WV, Cr4W2MoV or Cr12.
A kind of antifriction alloy manufacturing composite abrasion-proof inner plate, in described antifriction alloy, the percentage by weight of composition is as follows: Cr
(14.0-25.0) W%, C(2.0-4.0) W%, Si(0.3-1.2) W%, Mn(0.3-0.8) W%, S(0-0.015) W%, P(0-
0.015) W%, Mo(0.2-2.0) W%, Ni(0-1.0) W%, Cu(0.3-1.2) W%, Re(0.2-0.4) W%, surplus is Fe.
A kind of method using antifriction alloy to manufacture composite abrasion-proof inner plate, comprises the steps:
1) dispensing, prepares the dispensing of antifriction alloy；
2) enter stove melting, antifriction alloy and high-ductility steel and separate melting；
3) molten steel casting, is first poured into antifriction alloy molten steel in die cavity, then by high-ductility steel pouring molten steel to die cavity；
4) cast(ing) surface processes, spruing, clears up undesirable root, overlap, burr；
5) heat treating castings, carries out quenching, temper.
Preferably, in described step 1), in antifriction alloy, the percentage by weight of composition is as follows: Cr(14-15.8) W%, C
(2.0-3.2) W%, Si(0.3-1.2) W%, Mn(0.3-0.8) W%, S(0-0.015) W%, P(0-0.015) W%, Mo(0.2-2.0)
W%, Ni(0-1.0) W%, Cu(0.3-1.2) W%, Re(0.2-0.4) W%, surplus is Fe.
Preferably, described step 2) in, first stove melting antifriction alloy 1500 DEG C is come out of the stove, and enters A casting ladle；Second stove melting high tenacity
Steel 1700 DEG C is come out of the stove, and enters B casting ladle.
Preferably, in described step 3), comprise the steps:
1) getting out suitable mold, A casting ladle stands, after being cooled to 1400 DEG C, by lower floor's casting system to die cavity
Cast, to theoretical level-1cm；
2) cooling 1-3 minute, die cavity pour mass surface temperature is cooled to 1200 ± 30 DEG C, and B casting ladle is by upper strata casting system
System is poured into theoretical level；
3) A casting ladle carries out teeming, until being full of whole rising head；
4) rising head covering and heat insulating agent time delay feeding.
Preferably, in described step 5), comprise the steps:
1) allotment quenching liquid;
2) foundry goods dispersion shove charge, the stage, long-time (12-20 hour) was warming up between 900-1000 DEG C；
3) insulation is come out of the stove for more than 6 hours, after standing 5 minutes, quenches in the quenching liquid stirred in still air, pressure
Contracting air stirring more than 5 hours；
4) treat that foundry goods is cooled to about 500 DEG C, then stand air continues cool to room temperature, enter stove tempering (150-250
DEG C) time (3-6 hour)；
5) room temperature it is cooled to after coming out of the stove.
Preferably, in described quenching liquid, the percentage by weight of composition is as follows: polyethers (18%-35%) W%, triethanolamine
(3%-7%) W%, sodium benzoate (1.5%-2.8%) W%, defoamer (0.05%-0.5%) W%, excess water.
Above technical scheme is used to provide the benefit that: the composite abrasion-proof inner plate of present configuration uses double-metal layer knot
Structure, is composited by wearing layer and basic unit, and wearing layer is made up of antifriction alloy, and basic unit is made up of high-ductility steel, and this is wear-resisting compound
Plate is applicable to the most serious environment that weares and teares, and composite abrasion-proof inner plate also has the dual property of high hard material and toughness material, it
Compared with Other Engineering anti-friction material such as various alloy-steel plates, casting wear-resistant plate, cast stone, rubber, polyurethane etc., have and can not replace
The comprehensive excellent properties in generation.
In the antifriction alloy manufacturing composite abrasion-proof inner plate that the present invention relates to, the percentage by weight of composition is as follows: Cr(14-
20) W%, C(2.0-3.2) W%, Si(0.3-1.2) W%, Mn(0.3-0.8) W%, S(0-0.015) W%, P(0-0.015) W%, Mo
(0.2-2.0) W%, Ni(0-1.0) W%, Cu(0.3-1.2) W%, Re(0.2-0.4) W%, surplus is Fe, in its metallographic structure
The volume fraction of Cr7C3 carbide reaches more than 50%, and macrohardness is HRC56-62, and the hardness of chromium carbide is HV1400-
1800, owing to carbide becomes the perpendicular distribution of wear direction, even if compared with the congruent and casting alloy of hardness, wear-resisting
Performance is enhanced about more than once.
The method using antifriction alloy to manufacture composite abrasion-proof inner plate that the present invention relates to, preparation technology is easy, production efficiency
Height, finished product rate is high, more than 98%, composite abrasion-proof inner plate composite bed pore-free, be mingled with, the casting flaw such as shrinkage porosite and crackle, multiple
Conjunction layer is well combined, and composite bed bond strength is high, has exceeded the tensile strength of high-ductility steel, and composite abrasion-proof inner plate has good
Using effect, uses safe and reliable, uses middle without cracking, fracture and peeling phenomenon appearance, and under the conditions of identical use, it uses
Life-span improves 6-8 times than monolayer high manganese steel lining plate.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of composite abrasion-proof inner plate of the present invention；
Fig. 2 is the structural representation using mold in a kind of method using antifriction alloy to manufacture composite abrasion-proof inner plate of the present invention
Figure.
Wherein, 1--wearing layer, 2--basic unit, 3--mold, 4--die cavity, 5--upper strata casting system, 6--cast system next time
System, 7--rising head.
Detailed description of the invention
Describe the preferred embodiment of the present invention below in conjunction with the accompanying drawings in detail.
Fig. 1 shows the detailed description of the invention of a kind of composite abrasion-proof inner plate of the present invention: this composite abrasion-proof inner plate is by wearing layer 1 He
Basic unit 2 is composited, and wearing layer 1 is made up of antifriction alloy, and basic unit 2 is made up of high-ductility steel, antifriction alloy by Cr, C, Si, Mn,
S, P, Mo, Ni, Cu, Re and Fe mix.This high-ductility steel is the one in CA6WV, Cr4W2MoV or Cr12.
The present invention relates to a kind of antifriction alloy manufacturing composite abrasion-proof inner plate, the weight percent of composition in described antifriction alloy
Ratio is as follows: Cr(14.0-25.0) W%, C(2.0-4.0) W%, Si(0.3-1.2) W%, Mn(0.3-0.8) W%, S(0-0.015) W%,
P(0-0.015) W%, Mo(0.2-2.0) W%, Ni(0-1.0) W%, Cu(0.3-1.2) W%, Re(0.2-0.4) W%, surplus is Fe.
Mainly testing the percentage by weight of C, test test data see table, when the weight of composition in antifriction alloy
Percentage ratio is as follows: 18%Cr, 2.8%C, 0.6%Si, 0.5%Mn, 0.012%S, 0.01%P, 1.8%Mo, 0.8%Ni, 0.8%Cu, 0.3%
Re, surplus is Fe, the antifriction alloy related performance indicators of this component: hardness is 62(HRC), impact flexibility be 3.8ak(J/
Cm2), tensile strength be 640(KH) be optimal value, for preferred embodiment.
| Carbon content (%) | Hardness (HRC) | Impact flexibility ak(J/cm2) | Tensile strength (KH) |
| 2.0-2.3 | 48-53 | 5-5.5 | 450-500 |
| 2.3-2.5 | 53-56 | 4.5-5 | 500-550 |
| 2.5-2.8 | 56-60 | 3.5-4.5 | 550-600 |
| 2.8-3.2 | 60-65 | 3.0-3.5 | 600-700 |
| 3.2-4.0 | 65-70 | 2.5-3.0 | 700-780 |
| 2.8 | 62 | 3.8 | 640 |
The invention still further relates to a kind of method using antifriction alloy to manufacture composite abrasion-proof inner plate, comprise the steps:
1) dispensing, prepares the dispensing of antifriction alloy.
2) enter stove melting, antifriction alloy and high-ductility steel and separate melting.
3) molten steel casting, is first poured into antifriction alloy molten steel in die cavity 4, then by high-ductility steel pouring molten steel to die cavity 4
In.
4) cast(ing) surface processes, spruing, clears up undesirable root, overlap, burr.
5) heat treating castings, carries out quenching, temper.
In step 1), in antifriction alloy, the percentage by weight of composition is optimized for further: Cr(14-15.8) W%, C(2.0-
3.2) W%, Si(0.3-1.2) W%, Mn(0.3-0.8) W%, S(0-0.015) W%, P(0-0.015) W%, Mo(0.2-2.0) W%, Ni
(0-1.0) W%, Cu(0.3-1.2) W%, Re(0.2-0.4) W%, surplus is Fe.
Step 2) in, first stove melting antifriction alloy 1500 DEG C is come out of the stove, and enters A casting ladle；Second stove melting high-ductility steel 1700 DEG C goes out
Stove, enters B casting ladle.
In step 3), comprise the steps:
1) getting out suitable mold 3, A casting ladle stands, after being cooled to 1400 DEG C, by lower floor's casting system 6 to type
Chamber 4 is poured into a mould, to theoretical level-1cm.
2) cooling 1-3 minute, die cavity 4 pour mass surface temperature is cooled to 1200 ± 30 DEG C, and B casting ladle is by upper strata casting system
System 3 is poured into theoretical level.
3) A casting ladle carries out teeming, until being full of whole rising head 7.
4) rising head 7 covering and heat insulating agent time delay feeding.
In step 5), comprise the steps:
1) allotment quenching liquid, in quenching liquid, the percentage by weight of composition is as follows: polyethers (18%-35%) W%, triethanolamine
(3%-7%) W%, sodium benzoate (1.5%-2.8%) W%, defoamer (0.05%-0.5%) W%, excess water.
This quenching medium hot stage rate of cooling more than 750 DEG C is big, therefore so that the workpiece crystal grain arrived is tiny,
Improve the performance of workpiece, the quenching medium cold stage rate of cooling less than 750 DEG C that the present invention provides relatively slowly, therefore can in case
Only form bigger internal stress at inside workpiece, thus reach the purpose preventing workpiece from ftractureing.
2) foundry goods dispersion shove charge, the stage, long-time (12-20 hour) was warming up between 900-1000 DEG C, tested test data
See table, when the heating-up time be 16 little time, when hardening heat is 980 DEG C, the related performance indicators of wearing layer: hardness is 62
(HRC), impact flexibility be 3.7ak(J/cm2), tensile strength be 680(KH) be optimal value, for preferred embodiment.
| Heating-up time (h) | Hardening heat (DEG C) | Hardness (HRC) | Impact flexibility ak(J/cm2) | Tensile strength (KH) |
| 12 | 900 | 54 | 5.0 | 490 |
| 12 | 1000 | 60 | 4.4 | 540 |
| 20 | 900 | 56 | 4.1 | 570 |
| 20 | 1000 | 66 | 3.2 | 740 |
| 16 | 980 | 62 | 3.7 | 680 |
The purpose of quenching is to make overcooling austenite carry out martensite or bainite transformation, obtains martensite or bainite group
Knit, then coordinate the tempering with different temperatures, so that the intensity of steel, hardness, wearability, fatigue strength and toughness are greatly improved
Deng, thus meet the different use requirements of various machine components and instrument.Some special steel material can also be met by quenching
The special physics such as ferromagnetism, corrosion resistance, chemical property.
In actual production, the selection of heating-up temperature to be adjusted as the case may be, when batch is more, is intended to increase by zero
Temperature upper limit is can be selected for during part depth of hardening zone etc.；If workpiece shapes is complicated, the lowest temperatures to be used such as deformation requirements is strict.
3) insulation is come out of the stove for more than 6 hours, after standing 5 minutes, quenches in the quenching liquid stirred in still air, pressure
Contracting air stirring more than 5 hours, compressed air stir more than 5 hours, for integral quenching, the purpose of insulation be make workpiece in
Portion's homogeneous temperature reaches unanimity, and to all kinds of quenchings, the region that its temperature retention time ultimately depends on requiring quenching obtains good
Quench heating tissue.
4) treat that foundry goods is cooled to about 500 DEG C, then stand air continues cool to room temperature, enter stove tempering (150-250
DEG C) time (3-6 hour), test test data see table, when the heating-up time be 16 little time, when hardening heat is 980 DEG C, wear-resisting
Layer related performance indicators: hardness is 62(HRC), impact flexibility be 3.8ak(J/cm2), tensile strength be 700(KH) for optimum
Value, for preferred embodiment.
| Temperature (DEG C) | Tempering time (h) | Hardness (HRC) | Impact flexibility ak(J/cm2) | Tensile strength (KH) |
| 150 | 3 | 64 | 3.4 | 720 |
| 150 | 6 | 60 | 3.8 | 660 |
| 250 | 3 | 60 | 4.6 | 580 |
| 250 | 6 | 58 | 4.8 | 520 |
| 200 | 4 | 62 | 3.8 | 700 |
Workpiece through quenching is reheated to the proper temperature less than lower critical temperature, at sky after insulation a period of time
The metal heating processing technology of cooling in gas or the medium such as water, oil.Maybe the alloy workpiece after quenching is heated to proper temperature, insulation
Some time, the most slowly or quickly cool down, to lower or to eliminate the internal stress in quenched steel component, or reduce its hardness with strong
Degree, to improve its ductility or toughness.
Present embodiment uses lonneal, it is therefore an objective to keep hardness and wearability that quenching workpiece is high, reduce
Obtain tempered martensite after quenching residual stress and fragility tempering, refer to the tissue obtained during quenched martensite lonneal.Mechanics
Performance: 58-64HRC, high hardness and wearability.
5) room temperature it is cooled to after coming out of the stove.
Above-described is only the preferred embodiment of the present invention, it is noted that for those of ordinary skill in the art
For, without departing from the concept of the premise of the invention, it is also possible to make some deformation and improvement, these broadly fall into the present invention
Protection domain.
Claims (2)
1. one kind uses the method that antifriction alloy manufactures composite abrasion-proof inner plate, it is characterised in that: comprise the steps:
1) dispensing, prepares the dispensing of antifriction alloy, and in antifriction alloy, the percentage by weight of composition is as follows: Cr (14-15.8) W%, C
(2.0-3.2) W%, Si (0.3-1.2) W%, Mn (0.3-0.8) W%, S (0-0.015) W%, P (0-0.015) W%, Mo
(0.2-2.0) W%, Ni (0-1.0) W%, Cu (0.3-1.2) W%, Re (0.2-0.4) W%, surplus is Fe；
2) enter stove melting, antifriction alloy and high-ductility steel and separate melting: first stove melting antifriction alloy 1500 DEG C is come out of the stove, and enters A casting ladle；
Second stove melting high-ductility steel 1700 DEG C is come out of the stove, and enters B casting ladle；
3) molten steel casting, is first poured into antifriction alloy molten steel in die cavity, then by high-ductility steel pouring molten steel to die cavity:
31) getting out suitable mold, A casting ladle stands, and after being cooled to 1400 DEG C, is watered to die cavity by lower floor's casting system
Note, to theoretical level-1cm；
32) cooling 1-3 minute, die cavity pour mass surface temperature is cooled to 1200 ± 30 DEG C, and B casting ladle is watered by upper strata casting system
Note is to theoretical level；
33) A casting ladle carries out teeming, until being full of whole rising head；
34) rising head covering and heat insulating agent time delay feeding；
4) cast(ing) surface processes, spruing, clears up undesirable root, overlap, burr；
5) heat treating castings, carries out quenching, temper:
51) allotment quenching liquid；
52) foundry goods disperses shove charge, and long-time 12-20 hour of stage was warming up between 900-1000 DEG C；
53) insulation is come out of the stove for more than 6 hours, after standing 5 minutes, quenches in the quenching liquid stirred in still air, compression
Air stirring more than 5 hours；
54) treat that foundry goods is cooled to less than 500 DEG C, then stand air continues cool to room temperature, enter the stove 150-250 DEG C of time of tempering
3-6 hour；
55) room temperature it is cooled to after coming out of the stove.
A kind of method using antifriction alloy to manufacture composite abrasion-proof inner plate the most according to claim 1, it is characterised in that: institute
State the percentage by weight of composition in quenching liquid as follows: polyethers 18%-35%, triethanolamine 3%-7%, sodium benzoate 1.5%-
2.8%, defoamer 0.05%-0.5%, excess water.
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| CN104988432A (en) * | 2015-06-03 | 2015-10-21 | 青岛永升伟业新材料技术有限公司 | Novel preparation method for steel balls of coal mill and assembling grading application method |
| CN105108114B (en) * | 2015-09-18 | 2017-07-28 | 江苏国泰机械制造有限公司 | The method that stress is eliminated after duplex metal composite lining board casting |
| CN105856725B (en) * | 2016-04-05 | 2018-02-09 | 昆明理工大学 | A kind of bimetallic bainite and martensite multi-phase wear-resistant liner plate and preparation method thereof |
| CN105772687A (en) * | 2016-04-22 | 2016-07-20 | 湖南湖大三佳车辆技术装备有限公司 | Automobile mold casting compositely casted through cold work die steel and gray iron, pouring system and casting method |
| CN105970743B (en) * | 2016-05-17 | 2018-08-07 | 沈阳鼎然新材料有限公司 | A kind of compound slider bed platen of the railway high speed track switch of physical bond |
| CN114393194B (en) * | 2021-12-31 | 2023-08-22 | 舞阳钢铁有限责任公司 | Production method of stainless steel composite plate |
| CN116037899A (en) * | 2022-12-30 | 2023-05-02 | 兰州城市学院 | Method for manufacturing coal grinding lining plate |
| CN117464154B (en) * | 2023-12-27 | 2024-03-05 | 南京天保昌冶金机械配件有限公司 | Welding process for embedding alloy plates on surfaces of strip steel lining plates and side guide plates |
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