CN106244903A - A kind of multi-scale coupling grinding roller and preparation method thereof - Google Patents
A kind of multi-scale coupling grinding roller and preparation method thereof Download PDFInfo
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- CN106244903A CN106244903A CN201610613091.5A CN201610613091A CN106244903A CN 106244903 A CN106244903 A CN 106244903A CN 201610613091 A CN201610613091 A CN 201610613091A CN 106244903 A CN106244903 A CN 106244903A
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- 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
- C22C37/08—Cast-iron alloys containing chromium with nickel
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/0081—Casting in, on, or around objects which form part of the product pretreatment of the insert, e.g. for enhancing the bonding between insert and surrounding cast metal
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/08—Casting in, on, or around objects which form part of the product for building-up linings or coverings, e.g. of anti-frictional metal
- B22D19/085—Casting in, on, or around objects which form part of the product for building-up linings or coverings, e.g. of anti-frictional metal of anti-frictional metal
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/16—Casting in, on, or around objects which form part of the product for making compound objects cast of two or more different metals, e.g. for making rolls for rolling mills
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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
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- 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
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Abstract
The present invention is a kind of multi-scale coupling grinding roller and preparation method thereof.It is coupled to form by core roll body, matrix wearing layer, transition zone and roll surface wear-resisting morphemic stratum.On core material, the compound one layer of mass percent (%) of casting is: C:1.95～3.2, Cr:12.0～24.0, B:0.8～1.80, Mn:0.4～0.8, Si:0.4～1.2, Ni:0.50～1.20, Mg:0.02～0.04, Ce:0.03～0.05, Ti:0.05～0.10, V:0.1～0.3, N:0.006～0.015, S ＜ 0.04, P ＜ 0.04, the high abrasion boron-containing high-chromium cast iron matrix wearing layer of surplus Fe；Carry out built-up welding roll surface wear-resisting morphemic stratum material again on transition zone surface, roll surface wear-resisting morphemic stratum by mass percent (%) is: C:2.5～3.2, Cr:18.0～26.0, Ni:1.3～2.5, Nb:0.6～2.5, Mo:1.5～2.5, Si:1.0～2.5, Ti:1.0～1.5, V:0.3～1.0, Zr:0.2～1.5, S ＜ 0.007, P ＜ 0.015, surplus is the flux-cored wire overlay cladding Non-smooth surface form of Fe.
Description
Technical field
The present invention relates to a kind of multi-scale coupling grinding roller and preparation method thereof, belong to metal material field.
Background technology
Grinding equipment is the industry mineral such as metallurgy, mine, cement, electric power, chemical industry, coal, building materials, pottery and refractory material
Institute's one of widely used important Large-Scale Equipment in muck and ore grinding processing, and grinding roller and compression roller be milling equipment pass
Key member and key wear attrition component, China's Year's consumption reaches more than 120 ten thousand tons.Therefore, seek to improve grinding roller material, improve the longevity
Life, reduces energy consumption and roller consumption becomes the target that many field technology workers pursue jointly, is paid attention to by countries in the world.Research and development
High-abrasive material has become the emphasis of countries in the world field of new research and development, is also that in the high technology development of countries in the world, strategy is competing
The focus striven.
Present stage, growing continuously and fast and heavy industrialization trend of China's economic so that the nature that China lacks relatively
Resource is bearing huge pressure.In this context, construction minimizing (Reduce), recycling (Reuse), recirculation are pursued
And remanufacture " 4R " Circular Economy of (Remanufacture), and then change and chase after the most merely (Recycle)
Seek the idea of development of scale and speed, be not only a kind of policy guidance, and admitted by increasing people in the industry.
At present, field, domestic general employing high rigidity, high-wearing feature, the solder wire material of high-impact are manufactured at grinding roller
Roller surface is carried out built-up welding process, can weld, with heap, the table of excellent performance that fertile material is difficult to obtain, even cannot obtain
The surface garland of surface layer or different pattern, significantly improves the wearability of grinding roller.After roller surface abrasion, can carry out more than 10 times
Again built-up welding processes, and reduces cost and improves again production efficiency, but the Repair gene again for roller brings a difficult problem.Have
The material of superpower, high tenacity and high-wearing feature is difficult to processing, and Repair gene amount is big, and the labor intensity of workman is big, working environment
Difference, and Repair gene efficiency is the highest.After processing, workpiece the most often has folder carbon, carburizing, deviation from circular from greatly, and owing to welding
Journey produces stress and slag point, makes layer micro-crack and hole, in use cracks can spread occur, after reaching to a certain degree
Occurring block, peeling, service life is short, and first use is typically at about 8000 hours；And when build-up wear-resistant layer wears up to a 5mm left side
Right or occur block, peeling phenomenon, Bead weld repair need to be re-started.Rehabilitation expense with to purchase valency suitable, the problems such as maintenance cost is high,
Therefore, find a kind of more effective way and improve wearability and the fatigue life of grinding roller, be the technical barrier being badly in need of solving, have
Important practical significance.
In various wear forms, the abrasive wear of material accounts for about the 50% of total amount of wearing and tearing, and its form of expression is hard
Granule or hard thrust make material produce a kind of abrasion migrated and cause, and are embodied in the ditch dug with a plow on plastic material surface, micro-
See cutting and fragile material fracture.The tissue that it has been generally acknowledged that high-abrasive material should be to be dispersed with many in soft plastic substrate
The heterojunction structure of grit, under normal load effect, is mainly directly born load by the hard phase protruded at friction surface, and
Soft phase then plays a part to support hard phase.Therefore, the research and development using hard particles to strengthen the wearing composite material prepared mutually are thought
Road is typically all the wearability by improving matrix material and the matrix material interface bond strength with particulates reinforcements to subtracting
Coming off of few particulates reinforcements, thus reach to improve the anti-wear performance of material.
The Research idea more consideration matrix material of wearing composite material and the self performance of enhancing phase.Consider merely material
Self performance is very limited amount of to the anti-wear performance of raising composite.Some organism material has good toughness and relatively
The combination properties such as high hardness and wear resistance, this is because they by different forms, structure, material and composition etc. each other it
Between coupling, surface has the multilevel hierarchy of different scale.
Boron content in the earth's crust is about 10ppm, is one of most important element in the earth's crust.And China is that boron provides in the world
Source, than one of more rich country, occupies the 4th, the world.Along with the alloying elements such as chromium, molybdenum, nickel, tungsten, vanadium make in ferrous materials
Being continuously increased of consumption, price rapidly goes up, and supply is becoming tight day, causes common iron and steel high-abrasive material production cost constantly to be climbed
Rise.In ordinary steel iron material, add appropriate boron, can be realized boronation object by Boron contents and carbon content in regulation alloy
Long-pending percent and the control of base carbon, make material have wearability and the obdurability of excellence.
Summary of the invention
The present invention is directed to existing grinding roller high-abrasive material above shortcomings, it is provided that the one manufactured for grinding roller is multiple dimensioned
Coupling grinding roller and preparation method thereof.
The manufacture high-abrasive material of a kind of multi-scale coupling grinding roller of the present invention is to use excessive component material modular design,
Multi-scale coupling grinding roller is coupled to form by core roll body, matrix wearing layer, transition zone and roll surface wear-resisting morphemic stratum.
The concrete technical scheme of the present invention is:
Core roll body material uses has 42CrMo, 37CrMo, 35CrMo, 40Cr low-alloy steel of toughness, spheroidal graphite cast-iron,
Outside core material by the compound one layer of mass percent (%) of casting it is: C:1.95～3.2, Cr:15.0～24.0, B:
0.8～1.80, Mn:0.4～0.8, Si:0.4～1.2, Ni:0.50～1.20, Mg:0.02～0.04, Ce:0.03～0.05,
Ti:0.05～0.10, V:0.1～0.3, N:0.006～0.015, S ＜ 0.04, P ＜ 0.04, the high abrasion boracic of surplus Fe is high
Chrome cast iron matrix wearing layer；Using electro-smelting, its manufacturing technology steps is:
1. ordinary scrap steel and ferrochrome Hybrid Heating are melted, add ferrosilicon after molten steel is melting down and ferromanganese, ferrosilicon and ferromanganese add
After entering 10 minutes, add ferro-boron；Wherein chromium, boron, manganese, silicon and titanium, vanadium respectively with ferrochrome, ferrosilicon, ferromanganese, ferrotianium, vanadium iron and
Ferro-boron form adds, and magnesium and nickel add with magnesium-nickel alloy form, and cerium adds with cerium-based rare earth ferrosilicon form, and nitrogen is with containing nitrogenous ferrochrome
Form adds；
2. after stokehold adjusting component is qualified, temperature is risen to 1550～1650 DEG C, add account for steel quality 0.1%～
The aluminium deoxidation of 0.12%, is subsequently added ferrotianium, vanadium iron and magnesium-nickel alloy 2～comes out of the stove after 5 minutes；
3. by cerium-based rare earth ferrosilicon, the fritter that granularity is 10～12mm it is crushed to containing nitrogenous ferrochrome, through 150～250 DEG C of drying
After, it is placed in bottom casting ladle, pours method molten steel is carried out microalloy treatment in bag；
4. will have 42CrMo, 37CrMo, 35CrMo, 40Cr low-alloy steel of toughness, spheroidal graphite cast-iron or waste and old grinding roller
Core material carries out removing surface, then after one layer of siliceous antioxidizing paint of surface-coated, uses heating furnace to be heated to
650～950 DEG C, then hung out and put in casting mold；
5. liquid steel temperature is down to 1450～1550 DEG C, directly pours in the casting mold of the roller core after being placed with preheating, and molten steel waters
Note 1～air cooling of unpacking after 10 hours；
6. high abrasion boron-containing high-chromium cast iron matrix wearing layer material carries out quenching and tempering heat treatment, and quenching temperature is
950～1050 DEG C, temperature retention time 2～6 hours, air cooling to temperature carries out tempering heat treatment less than 200 DEG C, and tempering heating-up temperature is
400～500 DEG C, tempering insulation time 4～15 hours, stove is cooled to temperature less than after 200 DEG C, and last air is cooled to room temperature；
Then the composite grinding roll matrix wearing layer material cast is carried out removing surface, internal flaw detection and preheating, preheating
Temperature controls between 350 DEG C～400 DEG C, and transition zone uses commercially available mild steel weldinmg rod, austenitic stainless steel welding wire, passes through heap
Its heap is soldered on high abrasion modification boron-containing high-chromium cast iron wearing layer matrix by weldering mode, and overlay cladding thickness is 2～5mm；
Carry out built-up welding roll surface wear-resisting morphemic stratum material again on transition zone surface, roll surface wear-resisting morphemic stratum material uses quality hundred
Mark (%) is: C:2.5～3.2, Cr:18.0～26.0, Ni:1.3～2.5, Nb:0.6～2.5, Mo:1.5～2.5, Si:
1.0～2.5, Ti:1.0～1.5, V:0.3～1.0, Zr:0.2～1.5, S ＜ 0.007, P ＜ 0.015, surplus is the medicated core of Fe
Welding wire built-up welding molding, overlay cladding thickness is 5～15mm；
Finally, use the material identical with preparing roll surface wear-resisting morphemic stratum, carry out further on the wearing layer surface of grinding roller
Built-up welding processes, and is welded into by roll surface heap and has millimetre-sized pit shape or convex closure shape, striated, corrugated, latticed or flakey
Non-smooth surface form or be prepared as that there is millimetre-sized pit shape or convex closure shape, striated, ripple by the method for machining
Shape, latticed or flakey Non-smooth surface form；Multi-scale coupling composite grinding roll is put into the stove that temperature is 200 DEG C and is entered by heap postwelding
The insulation of row 1.5～5.0h, then shove charge anneals, annealing temperature is 500～600 DEG C, sky of coming out of the stove during furnace cooling to 100 DEG C
Cold.
Beneficial effect
The present invention utilizes multi-scale coupling technology to manufacture grinding roller, and passes through built-up welding or be machined in roller surface formation
There is the bionic coupling configuration of surface pattern of different shape, size and the regularity of distribution, make the wearability of grinding roller and grinding effect obtain
To large increase.
Matrix wearing layer uses high abrasion modification boron-containing high-chromium cast iron materials, has the features such as hardness height, good toughness, in reality
Border has good wearability and thermal fatigue resistance in using, and its service life improves than Cr15Mo3 high-chromium white cast iron
30%～60%, production cost reduces by 20% than Cr15Mo3 high-chromium white cast iron, and overcomes during high-chromium white cast iron uses easy
Peel off and the deficiency of cracking.
The present invention compared with prior art has the advantage that
1) hardness and the toughness of material of the present invention can adjust with wide cut, to meet different wear working condition requirements, the most firmly
Degree reaches 58～65HRC, and impact flexibility reaches 14～30J/cm2；
2) material of the present invention is with cheap chromium, boron as main alloy element, closes without expensive tungsten, molybdenum, vanadium, niobium etc.
Gold element, nickel element addition is the most less, the most with low cost, and production cost is than Cr15Mo3 high chromium white conventional on field
Cast iron reduces by 20%.
3), during cast of the present invention, heat treatment and use, will not crack and flake off, overcome high-chromium white cast iron
The deficiency of safety in utilization difference.
4) the roll surface wear-resisting morphemic stratum flux-cored wire material of the present invention, is on high-chromium alloy cast-iron flux-cored wire basis
On by adding the element ti big with the affinity of C, B, V and Nb etc., change type and the quantity of carbide, generate size less
The more metal carbides of carbide, boride and acquisition, boride, improve the sensitivity of crackle.
5) by having the bionic coupling configuration of surface figure of different shape, size and the regularity of distribution in roller surface preparation
Case, compares with the smooth surface grinding roller of same matrix material, improves 2～4 times service life.Can select for specific requirement
The bionic coupling configuration of surface pattern of different shape, size and the regularity of distribution, thus obtain different performances.
It is simple that the present invention also has manufacturing process, dependable performance, low cost, cost performance ratio.Can improve and set
Received shipment transfer efficient, reduces labor strength, has significant economic and social benefit.Can be widely applied to the cement of China
Deng in grinding industry, promote China's basic industries and the development of the export trade, promote the growth of national economy.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is further described.
Embodiment 1:
Core material uses the 42CrMo low-alloy steel with toughness, by the compound one layer of matter of casting outside core material
Amount percent (%) is: C:2.50, Cr:15.0, B:0.80, Mn:0.50, Si:0.60, Ni:0.60, Mg:0.02, Ce:0.03,
Ti:0.06, V:0.1, N:0.006, S ＜ 0.04, P ＜ 0.04, the high abrasion modification boron-containing high-chromium cast iron matrix of surplus Fe is wear-resisting
Layer；Using electro-smelting, its manufacturing technology steps is:
1. ordinary scrap steel and ferrochrome Hybrid Heating are melted, add ferrosilicon after molten steel is melting down and ferromanganese, ferrosilicon and ferromanganese add
After entering 10 minutes, add ferro-boron；Wherein chromium, boron, manganese, silicon and titanium, vanadium respectively with ferrochrome, ferrosilicon, ferromanganese, ferrotianium, vanadium iron and
Ferro-boron form adds, and magnesium and nickel add with magnesium-nickel alloy form, and cerium adds with cerium-based rare earth ferrosilicon form, and nitrogen is with containing nitrogenous ferrochrome
Form adds；
2. after stokehold adjusting component is qualified, temperature is risen to 1580 DEG C, add the aluminium deoxidation accounting for steel quality 0.1%, subsequently
Add ferrotianium and magnesium-nickel alloy was come out of the stove after 3 minutes；
3. by cerium-based rare earth ferrosilicon, it is crushed to the fritter that granularity is 10～12mm containing nitrogenous ferrochrome, after 200 DEG C dry, puts
Bottom casting ladle, pour method molten steel is carried out microalloy treatment in bag；
4. the 42CrMo low-alloy steel grinding roller core material with toughness is carried out removing surface, then in surface-coated one
After the siliceous antioxidizing paint of layer, use heating furnace to be heated to 800 DEG C, then hung out and put in casting mold；
5. liquid steel temperature is down to 1500 DEG C, directly pours in the casting mold of the roller core after being placed with preheating, pouring molten steel 8 hours
Rear air cooling of unpacking；
6. high abrasion modification boron-containing high-chromium cast iron wearing layer material carries out quenching and tempering heat treatment, and quenching temperature is
980 DEG C, temperature retention time 4 hours, air cooling to temperature carries out tempering heat treatment less than 200 DEG C, and tempering heating-up temperature is 450 DEG C, returns
Fire temperature retention time 8 hours, stove be cooled to temperature less than 200 DEG C after, last air is cooled to room temperature；
Then the composite grinding roll matrix wearing layer material cast is carried out removing surface, internal flaw detection and preheating, preheating
Temperature controls at 350 DEG C, and transition zone uses commercially available mild steel weldinmg rod, by built-up welding mode, its heap is soldered to above-mentioned high abrasion and changes
On property boron-containing high-chromium cast iron wearing layer matrix, overlay cladding thickness is 3mm；
Carry out built-up welding roll surface wear-resisting morphemic stratum material again on transition zone surface, roll surface wear-resisting morphemic stratum material uses quality hundred
Mark (%) is: C:2.8, Cr:15.0, Ni:1.5, Nb:0.90, Mo:1.50, Si:1.30, Ti:1.0, V:1.0, Zr:0.60,
S ＜ 0.007, P ＜ 0.015, surplus is the flux-cored wire built-up welding molding of Fe, and overlay cladding thickness is 12mm；
Finally, use the material identical with preparing roll surface wear-resisting morphemic stratum, carry out further on the wearing layer surface of grinding roller
Built-up welding processes, and is welded into by roll surface heap and has millimetre-sized pit shape Non-smooth surface form；Heap postwelding is by multi-scale coupling composite grinding roll
Putting into the stove that temperature is 200 DEG C and carry out the insulation of 1.5h, then shove charge is annealed, annealing temperature is 550 DEG C, and furnace cooling is extremely
Come out of the stove when 100 DEG C air cooling.
Embodiment 2
Core material uses spheroidal graphite cast-iron, outside core material by the compound one layer of mass percent (%) of casting is:
C:3.0, Cr:15.0, B:1.0, Mn:0.60, Si:0.80, Ni:0.70, Mg:0.03, Ce:0.04, Ti:0.090, V:0.20,
N:0.010, S ＜ 0.04, P ＜ 0.04, the high abrasion modification boron-containing high-chromium cast iron wearing layer of surplus Fe；Use electro-smelting, its
Manufacturing technology steps is:
1. ordinary scrap steel and ferrochrome Hybrid Heating are melted, add ferrosilicon after molten steel is melting down and ferromanganese, ferrosilicon and ferromanganese add
After entering 10 minutes, add ferro-boron；Wherein chromium, boron, manganese, silicon and titanium are respectively with ferrochrome, ferrosilicon, ferromanganese, ferrotianium and ferro-boron form
Adding, and magnesium and nickel add with magnesium-nickel alloy form, cerium adds with cerium-based rare earth ferrosilicon form, and nitrogen adds with the form containing nitrogenous ferrochrome
Enter；
2. after stokehold adjusting component is qualified, temperature is risen to 1600 DEG C, add the aluminium deoxidation accounting for steel quality 0.11%, with
Rear addition ferrotianium and magnesium-nickel alloy were come out of the stove after 5 minutes；
3. by cerium-based rare earth ferrosilicon, it is crushed to the fritter that granularity is 10～12mm containing nitrogenous ferrochrome, after 230 DEG C dry, puts
Bottom casting ladle, pour method molten steel is carried out microalloy treatment in bag；
4. spheroidal graphite cast-iron grinding roller core material is carried out removing surface, then at one layer of siliceous antioxidizing paint of surface-coated
After, use heating furnace to be heated to 880 DEG C, then hung out and put in casting mold；
5. liquid steel temperature is down to 1500 DEG C, directly pours in the casting mold of the roller core after being placed with preheating, pouring molten steel 9 hours
Rear air cooling of unpacking；
6. high abrasion modification boron-containing high-chromium cast iron matrix wearing layer material carries out quenching and tempering heat treatment, Quench heating temperature
Degree is 1000 DEG C, temperature retention time 5 hours, and air cooling to temperature carries out tempering heat treatment less than 200 DEG C, and tempering heating-up temperature is 480
DEG C, tempering insulation time 10 hours, stove is cooled to temperature less than after 200 DEG C, and last air is cooled to room temperature；
Then the composite grinding roll matrix wearing layer material cast is carried out removing surface, internal flaw detection and preheating, preheating
Temperature controls between 400 DEG C, and its heap is soldered to high abrasion by built-up welding mode and changes by transition zone employing austenitic stainless steel welding wire
On property boron-containing high-chromium cast iron wearing layer matrix, overlay cladding thickness is 2～5mm；
Carry out built-up welding roll surface wear-resisting morphemic stratum material again on transition zone surface, roll surface wear-resisting morphemic stratum material uses quality hundred
Mark (%) is: C:3.0, Cr:18.0, Ni:1.80, Nb:1.30, Mo:1.80, Si:2.0, Ti:1.40, V:1.0, Zr:1.5,
S ＜ 0.007, P ＜ 0.015, surplus is the flux-cored wire built-up welding molding of Fe, and overlay cladding thickness is 13mm；
Finally, it is prepared as that there is millimetre-sized striated Non-smooth surface form by the method for machining；Heap postwelding will be many
Yardstick coupling composite grinding roll is put into the stove that temperature is 200 DEG C and is carried out the insulation of 3.0h, then shove charge is annealed, and annealing temperature is
560 DEG C, air cooling of coming out of the stove during furnace cooling to 100 DEG C.
Embodiment 3
Core material uses 40Cr low-alloy steel, by the compound one layer of mass percent (%) of casting outside core material
For: C:2.90, Cr:18.0, B:1.80, Mn:0.8, Si:1.2, Ni:0.80, Mg:0.04, Ce:0.05, Ti:0.10, V:0.3,
N:0.015, S ＜ 0.04, P ＜ 0.04, the high abrasion modification boron-containing high-chromium cast iron wearing layer of surplus Fe；Use electro-smelting, its
Manufacturing technology steps is:
1. ordinary scrap steel and ferrochrome Hybrid Heating are melted, add ferrosilicon after molten steel is melting down and ferromanganese, ferrosilicon and ferromanganese add
After entering 10 minutes, add ferro-boron；Wherein chromium, boron, manganese, silicon and titanium are respectively with ferrochrome, ferrosilicon, ferromanganese, ferrotianium and ferro-boron form
Adding, and magnesium and nickel add with magnesium-nickel alloy form, cerium adds with cerium-based rare earth ferrosilicon form, and nitrogen adds with the form containing nitrogenous ferrochrome
Enter；
2. after stokehold adjusting component is qualified, temperature is risen to 1650 DEG C, add the aluminium deoxidation accounting for steel quality 0.12%, with
Rear addition ferrotianium and magnesium-nickel alloy were come out of the stove after 5 minutes；
3. by cerium-based rare earth ferrosilicon, it is crushed to the fritter that granularity is 12mm containing nitrogenous ferrochrome, after 250 DEG C dry, is placed in and waters
Bottom bag, pour method molten steel is carried out microalloy treatment in bag；
4. waste and old grinding roller core material is carried out removing surface, then after one layer of siliceous antioxidizing paint of surface-coated,
Use heating furnace to be heated to 950 DEG C, then hung out and put in casting mold；
5. liquid steel temperature is down to 1550 DEG C, directly pours in the casting mold of the roller core after being placed with preheating, and pouring molten steel 10 is little
Unpacking air cooling time after；
6. high abrasion modification boron-containing high-chromium cast iron matrix wearing layer material carries out quenching and tempering heat treatment, Quench heating temperature
Degree is 1050 DEG C, temperature retention time 6 hours, and air cooling to temperature carries out tempering heat treatment less than 200 DEG C, and tempering heating-up temperature is 500
DEG C, tempering insulation time 15 hours, stove is cooled to temperature less than after 200 DEG C, and last air is cooled to room temperature；
Then the composite grinding roll material cast carries out removing surface, internal flaw detection and preheating, and preheating temperature controls
Between 400 DEG C, transition zone uses austenitic stainless steel welding wire, by built-up welding mode, its heap is soldered to high abrasion modification boron-containing high-chromium
On cast iron wearing layer matrix, overlay cladding thickness is 5mm；
Carry out built-up welding roll surface wear-resisting morphemic stratum material again on transition zone surface, roll surface wear-resisting morphemic stratum material uses quality hundred
Mark (%) is: C:3.20, Cr:24.0, Ni:2.0, Nb:2.0, Mo:2.0, Si:2.3, Ti:1.6, V:1.0, Zr:1.5, S ＜
0.007, P ＜ 0.015, surplus is the flux-cored wire built-up welding molding of Fe, and overlay cladding thickness is 15mm；
Finally, use the material identical with preparing roll surface wear-resisting morphemic stratum, carry out further on the wearing layer surface of grinding roller
Built-up welding processes, and is welded into by roll surface heap and has millimetre-sized latticed Non-smooth surface form；Heap postwelding is by multi-scale coupling composite grinding roll
Putting into the stove that temperature is 200 DEG C and carry out the insulation of 4.5h, then shove charge is annealed, annealing temperature is 550 DEG C, and furnace cooling is extremely
Come out of the stove when 100 DEG C air cooling.
Claims (3)
1. multi-scale coupling grinding roller and preparation method thereof, it is characterised in that:
Multi-scale coupling grinding roller is coupled to form by roll body, matrix wearing layer, excessively ripple layer and roll surface wear-resisting morphemic stratum.
A kind of multi-scale coupling grinding roller the most according to claim 1 and preparation method thereof, it is characterised in that:
Core roll body material uses 42CrMo, 37CrMo, 35CrMo, 40Cr low-alloy steel with toughness, and spheroidal graphite cast-iron, at core
Portion's material outer by the compound one layer of mass percent (%) of casting is: C:1.95～3.2, Cr:15.0～24.0, B:0.8～
1.80, Mn:0.4～0.8, Si:0.4～1.2, Ni:0.50～1.20, Mg:0.02～0.04, Ce:0.03～0.05, Ti:
0.05～0.10, V:0.1～0.3, N:0.006～0.015, S ＜ 0.04, P ＜ 0.04, the high abrasion boron-containing high-chromium casting of surplus Fe
Iron-based body wearing layer；Using electro-smelting, its manufacturing technology steps is:
1. ordinary scrap steel and ferrochrome Hybrid Heating are melted, add ferrosilicon and ferromanganese, ferrosilicon and ferromanganese after molten steel is melting down and add 10
After minute, add ferro-boron；Wherein chromium, boron, manganese, silicon and titanium, vanadium are respectively with ferrochrome, ferrosilicon, ferromanganese, ferrotianium, vanadium iron and ferro-boron
Form adds, and magnesium and nickel add with magnesium-nickel alloy form, and cerium adds with cerium-based rare earth ferrosilicon form, and nitrogen is with containing nitrogenous ferrochrome form
Add；
2. after stokehold adjusting component is qualified, temperature is risen to 1550～1650 DEG C, add and account for steel quality 0.1%～0.12%
Aluminium deoxidation, is subsequently added ferrotianium, vanadium iron and magnesium-nickel alloy 2～comes out of the stove after 5 minutes；
3. by cerium-based rare earth ferrosilicon, it is crushed to the fritter that granularity is 10～12mm containing nitrogenous ferrochrome, after 150～250 DEG C dry, puts
Bottom casting ladle, pour method molten steel is carried out microalloy treatment in bag；
4. will have 42CrMo, 37CrMo, 35CrMo, 40Cr low-alloy steel of toughness, spheroidal graphite cast-iron or waste and old grinding roller core
Material carries out removing surface, then after one layer of siliceous antioxidizing paint of surface-coated, use heating furnace be heated to 650～
950 DEG C, then hung out and put in casting mold；
5. liquid steel temperature is down to 1450～1550 DEG C, directly pours in the casting mold of the roller core after being placed with preheating, pouring molten steel 1～
Unpacking air cooling after 10 hours；
6. high abrasion boron-containing high-chromium cast iron matrix wearing layer material carries out quenching and tempering heat treatment, and quenching temperature is 950
～1050 DEG C, temperature retention time 2～6 hours, air cooling to temperature carries out tempering heat treatment less than 200 DEG C, and tempering heating-up temperature is 400
～500 DEG C, tempering insulation time 4～15 hours, stove is cooled to temperature less than after 200 DEG C, and last air is cooled to room temperature；
Then the composite grinding roll matrix wearing layer material cast is carried out removing surface, internal flaw detection and preheating, preheats temperature
Controlling between 350 DEG C～400 DEG C, transition zone uses commercially available mild steel weldinmg rod, austenitic stainless steel welding wire, by built-up welding side
Its heap is soldered on high abrasion modification boron-containing high-chromium cast iron wearing layer matrix by formula, and overlay cladding thickness is 2～5mm；
Carry out built-up welding roll surface wear-resisting morphemic stratum material again on transition zone surface, roll surface wear-resisting morphemic stratum material uses mass percent
(%) be: C:2.5～3.2, Cr:18.0～26.0, Ni:1.3～2.5, Nb:0.6～2.5, Mo:1.5～2.5, Si:1.0～
2.5, Ti:1.0～1.5, V:0.3～1.0, Zr:0.2～1.5, S ＜ 0.007, P ＜ 0.015, surplus is the flux-cored wire heap of Fe
Being welded into type, overlay cladding thickness is 5～15mm.
A kind of multi-scale coupling grinding roller the most according to claim 1 and preparation method thereof, it is characterised in that:
Use the material identical with preparing roll surface wear-resisting morphemic stratum, carry out built-up welding process further on the wearing layer surface of grinding roller,
Roll surface heap is welded into there is millimetre-sized pit shape or convex closure shape, striated, corrugated, latticed or flakey Non-smooth surface form
Or by the method for machining be prepared as having millimetre-sized pit shape or convex closure shape, striated, corrugated, latticed or
Flakey Non-smooth surface form；Multi-scale coupling composite grinding roll is put into the stove that temperature is 200 DEG C and is carried out 1.5～5.0h by heap postwelding
Insulation, then shove charge anneals, and annealing temperature is 500～600 DEG C, air cooling of coming out of the stove during furnace cooling to 100 DEG C.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106238709A (en) * | 2016-07-26 | 2016-12-21 | 镇江富华轧辊有限公司 | The manufacture of a kind of grinding roller/remanufacture high-abrasive material and preparation method thereof |
| CN110039253A (en) * | 2019-04-18 | 2019-07-23 | 大唐东北电力试验研究院有限公司 | A kind of middling speed roller surface restorative procedure preventing penetrating crack |
| CN113718175A (en) * | 2021-09-02 | 2021-11-30 | 常熟市电力耐磨合金铸造有限公司 | Metal ceramic inlaid composite roller |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201940261U (en) * | 2011-01-07 | 2011-08-24 | 重庆京庆重型机械有限公司 | Roller sleeve of roller press |
| CN103820732A (en) * | 2014-03-19 | 2014-05-28 | 江苏新亚特钢锻造有限公司 | Particle-reinforced chromium boron iron-based abrasion-resistant composite material for remanufacturing roller and preparation technology thereof |
| CN103861686A (en) * | 2014-03-19 | 2014-06-18 | 江苏新亚特钢锻造有限公司 | Grinding roller with bionic and wear-resistant composite coating and preparation technology of grinding roller |
| CN104084258A (en) * | 2014-07-12 | 2014-10-08 | 吉林大学 | Wear-resisting anti-fatigue squeeze roller with multi-material coupling structure |
| CN106238709A (en) * | 2016-07-26 | 2016-12-21 | 镇江富华轧辊有限公司 | The manufacture of a kind of grinding roller/remanufacture high-abrasive material and preparation method thereof |
-
2016
- 2016-07-26 CN CN201610613091.5A patent/CN106244903A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201940261U (en) * | 2011-01-07 | 2011-08-24 | 重庆京庆重型机械有限公司 | Roller sleeve of roller press |
| CN103820732A (en) * | 2014-03-19 | 2014-05-28 | 江苏新亚特钢锻造有限公司 | Particle-reinforced chromium boron iron-based abrasion-resistant composite material for remanufacturing roller and preparation technology thereof |
| CN103861686A (en) * | 2014-03-19 | 2014-06-18 | 江苏新亚特钢锻造有限公司 | Grinding roller with bionic and wear-resistant composite coating and preparation technology of grinding roller |
| CN104084258A (en) * | 2014-07-12 | 2014-10-08 | 吉林大学 | Wear-resisting anti-fatigue squeeze roller with multi-material coupling structure |
| CN106238709A (en) * | 2016-07-26 | 2016-12-21 | 镇江富华轧辊有限公司 | The manufacture of a kind of grinding roller/remanufacture high-abrasive material and preparation method thereof |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106238709A (en) * | 2016-07-26 | 2016-12-21 | 镇江富华轧辊有限公司 | The manufacture of a kind of grinding roller/remanufacture high-abrasive material and preparation method thereof |
| CN110039253A (en) * | 2019-04-18 | 2019-07-23 | 大唐东北电力试验研究院有限公司 | A kind of middling speed roller surface restorative procedure preventing penetrating crack |
| CN113718175A (en) * | 2021-09-02 | 2021-11-30 | 常熟市电力耐磨合金铸造有限公司 | Metal ceramic inlaid composite roller |
| CN113926994A (en) * | 2021-09-27 | 2022-01-14 | 郑州机械研究所有限公司 | Preparation method of wear-resistant extrusion roller |
| US20230313331A1 (en) * | 2022-03-29 | 2023-10-05 | Townley Foundry & Machine Co., Inc. | Hypereutectic white iron alloy comprising chromium, boron and nitrogen and cryogenically hardened articles made therefrom |
| CN114535751A (en) * | 2022-04-08 | 2022-05-27 | 西安理工大学 | Mining scraper CMT gradient surfacing layer and preparation method thereof |
| CN114535751B (en) * | 2022-04-08 | 2023-10-20 | 西安理工大学 | Mining scrapping plate CMT gradient surfacing layer and preparation method thereof |
| CN117506230A (en) * | 2024-01-05 | 2024-02-06 | 成都工业学院 | Welding rod core wire and wear-resistant surfacing welding electrode |
| CN117506230B (en) * | 2024-01-05 | 2024-03-15 | 成都工业学院 | Welding rod core wire and wear-resistant surfacing welding electrode |
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