CN109876898A - A kind of grinding roller of vertical mill with surface transverse gradients hardness - Google Patents
A kind of grinding roller of vertical mill with surface transverse gradients hardness Download PDFInfo
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- CN109876898A CN109876898A CN201910162183.XA CN201910162183A CN109876898A CN 109876898 A CN109876898 A CN 109876898A CN 201910162183 A CN201910162183 A CN 201910162183A CN 109876898 A CN109876898 A CN 109876898A
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- abrasion
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Abstract
The present invention relates to vertical mill technical fields, a kind of grinding roller of vertical mill with surface transverse gradients hardness is provided, including roll body, carbine abrasion-proof stick, titanium carbide abrasion-proof stick, chromium carbide abrasion-proof stick, filling overlay cladding, whole overlay cladding, castingin forms composite wear-resistant layer in conjunction with filling overlay cladding respectively into carbine abrasion-proof stick, titanium carbide abrasion-proof stick, the chromium carbide abrasion-proof stick in roll body steel material, it is arranged successively together with whole overlay cladding on roll body surface, outer surface is concordant along roll body bus.The present invention devises the composite wear-resistant layer and whole overlay cladding on roll body surface according to the wear curve of grinding roller, the hardness of each section distribution gradient and matches from big to small with wear curve, it can make the wearing layer on roll body surface almost while abrasion finishes, entire wearing layer service life matches, it is repaired conducive to online, the service life for improving grinding roller is the innovation in terms of grinding roller of vertical mill.
Description
Technical field
The present invention relates to Vertical Mill technical field, especially a kind of grinding roller of vertical mill with surface transverse gradients hardness.
Background technique
Vertical Mill is a kind of widely applied milling apparatus of the industries such as cement, mine, electric power, coal, chemical industry, mainly by grinding
Roller, mill and other component composition, are ground, grinding roller is along horizontal circular trace in mill when work with rolling principle to material
Upper movement is applied to pressure at right angle on grinding roller by outside, so that material is squeezed and crushes with shear action.
Critical component of the grinding roller as Vertical Mill is easy to generate grinding roller in long-term mill processes due to being milled material complicated component
It is seriously worn, continues to increase the gap between grinding roller and mill, equipment operation efficiency decline, energy consumption improves.
The grinding roller of traditional homogenous material (such as rich chromium cast iron, potassium steel) production, the rate of wear is fast, consumption is big, brittleness is big,
Safety is poor.The type of grinding roller of vertical mill wearing layer mainly has built-up welding, composite casting antifriction alloy, ceramics/antifriction metal (AFM) multiple at present
Component etc..The hardness of built-up welding is generally 60-65HRC, and wearability is general, and service life is lower, and due to the presence of weld crack,
Easily there is peeling phenomenon in working face；Composite casting antifriction alloy impact resistance is preferable, but due to being required by casting technique, manufactures
At high cost, wearability is also difficult to bigger raising；Ceramics/antifriction metal (AFM) composite members wearability is relatively preferable, can effectively improve
Service life, but there are ceramic member protrusion after easily break, under huge compression, shearing stress, centrifugal force collective effect, ceramic member
The danger being extruded from antifriction metal (AFM).
Chinese patent CN104741173B discloses a kind of manufacturing method of composite material grinding roller, which includes metallic roll
Body and several waveform ceramic phase reinforcements or the wavy shaped configuration body being combined by waveform ceramic phase reinforcement and metallic matrix,
On the one hand these structural bodies continual performance can effectively support wear-resistant effect, another party on grinding roller product working face
Face, ceramic particle are embedded in metal roll body, are well combined with metal roll body, are not easy to peel off, and are realized raising grinding roller and are used the longevity
The effect of life.But there are the following problems for the patent: 1. waveform ceramic phase reinforcement needs are designed to can ensure that and increase in casting moment
Structure (see specification 0016th section) of each absolute distance selected between molten metal of strong body core less than 10mm, shape is multiple
Miscellaneous, preparation cost is high；2. waveform complex is closely arranged in grinding roller cast moulding according to roll surface shape for large-scale grinding roller
In chamber, then casting metals roll body (see the 0014th section of specification), the waveform complex on the roll body surface being prepared out can be deposited
In certain gap, which is made of metallic matrix, and metallic matrix can be worn first in production process, and waveform complex is then
It is easy to protrusion roll surface, there are the danger of complex brittle failure；3. grinding roller works, the distribution of eroded area (abrasion band) is that have
Difference, some places serious wear, some places are then worn relatively gently causes the wear condition of entire grinding roller different in this way, has
Place cannot work, still in serviceable condition, entire wearing layer service life mismatches some places, leads to making for grinding roller
It is low with the service life；4. gap is smaller since the arrangement of waveform complex is close, after the wearing layer failure of grinding roller, built-up welding can not be used
Method is repaired online, greatly reduces its service life, and cost performance is low.
Chinese patent CN108202209A discloses the preparation method of a kind of high abrasion shock resistance roller surface lining plate and compression roller,
It is by compound castingin technology and overlaying method, steel alloy, hard alloy and high abrasion-proof overlaying welding material three is compound, have product
There are good shock resistance and antiwear property, while wear surface can be repaired online by built-up welding mode.But the patent exists such as
Lower problem: 1. utilizing compound castingin technology, first by hard alloy bar castingin into toughness and the preferable steel alloy of weldability (see
The 0004th section of specification), grinding roller after a period of work, the deposited metal among hard alloy bar can wear major part, this
Sample there is hard alloy bar by the possibility of whole extrusion, this is breakneck under the working condition of Vertical Mill；2. grinding roller
After a period of work, the wear condition of entire grinding roller wearing layer is different, and entire wearing layer service life mismatches, online to repair
Opportunity is not easy to grasp, and repairs number and then accordingly increases, improves manufacturing cost, reduce production efficiency.
The still not found major issue of those skilled in the art is at present: eroded area when grinding roller works, on roll surface
(abrasion band) is unevenly distributed, and the big end roll surface of general tapered roller is frayed serious, from big end to the small end degree of wear according to
Secondary decrease, after the frayed failure of big end roll surface, other positions of roll surface can also be worked normally, and will cause the resistance to of entire grinding roller in this way
It grinds the wear surface adhesion that layer service life is mismatched, and failed and drives the intact wearing layer of rest part, make intact wear-resisting
Layer falls off in the form of sheets or the rapid serious wear of large area, in turn results in entire grinding roller wearing layer failure, has to shut down dimension at this time
Grinding roller is repaired or replaced, the whole service life of grinding roller is reduced.The science and technology such as paper, treatise, the patent of this problem at home and abroad
But relevant report is not found in document.
The wear curve of grinding roller of vertical mill is successively reduced from grinding roller big end to small end wear-out failure, this requires that grinding roller
The wearability of surface wear-resistant layer successively reduce, so that the entire wearing layer service life of grinding roller is matched, reach almost same
When wear the state that finishes, be conducive to repair online, improve the whole service life of grinding roller of vertical mill, reduce manufacturing cost.How
Solve the problems, such as that this is the task of top priority of scientific and technical personnel's work in the industry.
Summary of the invention
For above situation, for the defect for solving the prior art, the purpose of the present invention is just to provide a kind of horizontal with surface
To the grinding roller of vertical mill of gradient hardness, the entire wearing layer service life that can effectively solve grinding roller of vertical mill does not match that, is unfavorable for it
Online the problem of repairing.
The present invention adopts the following technical scheme: a kind of grinding roller of vertical mill with surface transverse gradients hardness, which is characterized in that
It is described including roll body, carbine abrasion-proof stick, titanium carbide abrasion-proof stick, chromium carbide abrasion-proof stick, filling overlay cladding, whole overlay cladding
Carbine abrasion-proof stick, titanium carbide abrasion-proof stick, the equal castingin of chromium carbide abrasion-proof stick are into roll body and to expose certain altitude be in honeycomb, bee
Be in nest shape gap filling overlay cladding, the carbine abrasion-proof stick, titanium carbide abrasion-proof stick, chromium carbide abrasion-proof stick respectively with filling heap
Layer combines composition tungsten carbide composite wear-resistant layer, titanium carbide composite wear-resistant layer, chromium carbide compounded wearing layer, and the tungsten carbide is compound
Wearing layer, titanium carbide composite wear-resistant layer, chromium carbide compounded wearing layer, whole overlay cladding are on roll body surface from the big end of roll body to small
End is arranged successively, and concordant along roll body bus.
The tungsten carbide composite wear-resistant layer, titanium carbide composite wear-resistant layer, chromium carbide compounded wearing layer, whole overlay cladding are in roller
Bus length ratio on body surface face is 1: x: y: z, and wherein the range of x, y, z is 0.5-3.0.
Carbine abrasion-proof stick, titanium carbide abrasion-proof stick, the height of chromium carbide abrasion-proof stick and the thickness of whole overlay cladding
It is identical.
The carbine abrasion-proof stick, titanium carbide abrasion-proof stick, chromium carbide abrasion-proof stick section be round table-like or prism-frustum-shaped,
Radius or the lesser one end of circumradius are placed in roll body surface, and radius or the biggish one end of circumradius are placed in roll body
The radius of inside, radius or the biggish one end of circumradius is 6-20mm, the bus of rotary table or the incline of terrace with edge and bottom surface
Angle is 59 ° -89 °.
The carbine abrasion-proof stick, titanium carbide abrasion-proof stick, chromium carbide abrasion-proof stick can be by comparable other are hard with its hardness
Matter alloy bar replaces.
The roll body is made of steel material.
The invention has the following advantages:
1) roll body core is made of steel material, intensity and toughness with higher；Surface is carbine abrasion-proof stick, titanium carbide
Abrasion-proof stick, chromium carbide abrasion-proof stick are good with the composite wear-resistant layer of filling wearing layer composition and whole overlay cladding, wearability respectively.
2) tungsten carbide (HV3000 or so) composite wear-resistant layer, the carbonization on roll body surface are devised according to the wear curve of grinding roller
Titanium (HV2400 or so) composite wear-resistant layer, chromium carbide (HV1800 or so) composite wear-resistant layer, whole overlay cladding (HV900 or so),
The hardness of each section distribution gradient and matches from big to small with the wear curve of grinding roller, and the wearing layer on roll body surface can be made several
Abrasion finishes simultaneously, and entire wearing layer service life matches, and is conducive to online reparation, and repair time is easily mastered.
3) carbine abrasion-proof stick, titanium carbide abrasion-proof stick, chromium carbide abrasion-proof stick section be round table-like or prism-frustum-shaped, and inlay
In outer small interior big structure when into roll body, the quilt from roll body metal is avoided under huge compression, shearing stress, centrifugal force effect
The danger of extrusion.
4) after the abrasion of grinding roller entire wearing layer, can online Bead weld repair, product utilization rate is high, reduce manufacture at
This, improves production efficiency.
Detailed description of the invention
Fig. 1 is a kind of grinding roller of vertical mill cross-sectional view with surface transverse gradients hardness of the present invention；
Fig. 2 is enlarged drawing at a kind of grinding roller of vertical mill a with surface transverse gradients hardness of the present invention；
Fig. 3 is enlarged drawing at a kind of grinding roller of vertical mill b with surface transverse gradients hardness of the present invention.
Description of symbols: 1, roll body, 2, carbine abrasion-proof stick, 3, titanium carbide abrasion-proof stick, 4, chromium carbide abrasion-proof stick, 5, fill out
Fill overlay cladding, 6, whole overlay cladding.
Specific embodiment
Technical solution of the present invention is described in further detail with reference to the accompanying drawing, but protection scope of the present invention is not limited to
It is as described below.
As shown in Figure 1 to Figure 3, a kind of grinding roller of vertical mill with surface transverse gradients hardness, which is characterized in that including roll body
1, carbine abrasion-proof stick 2, titanium carbide abrasion-proof stick 3, chromium carbide abrasion-proof stick 4, filling overlay cladding 5, whole overlay cladding 6, the carbon
Change tungsten abrasion-proof stick 2, titanium carbide abrasion-proof stick 3, the equal castingin of chromium carbide abrasion-proof stick 4 into roll body 1 and to expose certain altitude be in honeycomb,
Be in honeycomb gap filling overlay cladding 5, the carbine abrasion-proof stick 2, titanium carbide abrasion-proof stick 3, chromium carbide abrasion-proof stick 4 respectively with
It fills overlay cladding 5 and combines composition tungsten carbide composite wear-resistant layer, titanium carbide composite wear-resistant layer, chromium carbide compounded wearing layer, the carbon
Change tungsten composite wear-resistant layer, titanium carbide composite wear-resistant layer, chromium carbide compounded wearing layer, whole overlay cladding 6 on 1 surface of roll body from roll body
1 big end is arranged successively to small end, and concordant along 1 bus of roll body.
The tungsten carbide composite wear-resistant layer, titanium carbide composite wear-resistant layer, chromium carbide compounded wearing layer, whole overlay cladding 6 exist
Bus length ratio on 1 surface of roll body is 1: x: y: z, and wherein the range of x, y, z is 0.5-3.0, and specific value is according to grinding roller
Wear curve determines.
The carbine abrasion-proof stick 2, titanium carbide abrasion-proof stick 3, the height of chromium carbide abrasion-proof stick 4 and whole overlay cladding 6
Thickness is identical, with guarantee its almost and meanwhile abrasion finish, conducive to the online reparation of grinding roller.
The carbine abrasion-proof stick 2, titanium carbide abrasion-proof stick 3, chromium carbide abrasion-proof stick 4 section be round table-like or terrace with edge
Shape, radius or the lesser one end of circumradius are placed in 1 surface of roll body, radius or the biggish one end placement of circumradius
Inside roll body 1；Carbine abrasion-proof stick 2, titanium carbide abrasion-proof stick 3,4 radius of chromium carbide abrasion-proof stick or the circumradius compared with
The radius of big one end is 6-20mm, the bus of rotary table or the incline of terrace with edge and the angle of bottom surface is 59 ° -89 °；Carbine abrasion-proof
Stick 2, titanium carbide abrasion-proof stick 3, chromium carbide abrasion-proof stick 4 section be round table-like or prism-frustum-shaped, grinding roller can be made in use, i.e.,
When filling overlay cladding 5 being made to wear most of, under huge compression, shearing stress, centrifugal force collective effect, carbine abrasion-proof stick 2,
Titanium carbide abrasion-proof stick 3, chromium carbide abrasion-proof stick 4 there will not be the danger being extruded from the metal of roll body 1.
The carbine abrasion-proof stick 2, titanium carbide abrasion-proof stick 3, chromium carbide abrasion-proof stick 4 can by with its hardness it is comparable other
Hard alloy bar replaces.
The roll body 1 is made of steel material, and the steel material is potassium steel, steel alloy, rich chromium cast iron, ball
Black cast iron, carbon steel etc..
The filling overlay cladding 5 and whole overlay cladding 6 are carried out using gas shielded welding progress, and welding wire used is that outer layer is
The flux-cored wire of low-carbon cold rolling steel band, drug core component mass percent are as follows: graphene 0.2%-1.0%, crome metal 40%-45%,
Electrode graphite 5%-9%, marble 2%-4%, chromium carbide 1%-3%, electrolytic manganese metal 1%-4%, ferrosilicon 3%-6%, molybdenum 4%-6%, nickel 6%-
10%, ferro-boron 2%-4%, niobium 0.5%-3%, tungsten 0.5%-3.0%, rare earth 0.5%-1%, surplus are FHY100.25 reduced iron powder；Medicinal powder
Filling rate is 30%-60%；Gage of wire 1.6-2.8mm；Using DC reverse connection method；Welding parameter are as follows: welding current 280-500A,
Weldingvoltage 26-33V, speed of welding 300-800mm/min.
Embodiment 1:
1) truncated cone-shaped carbine abrasion-proof stick, titanium carbide abrasion-proof stick, chromium carbide abrasion-proof stick are prepared, the bottom radius of rotary table is 6mm, circle
The bus of platform and the angle of bottom surface are 70 °, the high 12mm of rotary table.
2) several truncated cone-shaped carbine abrasion-proof sticks, titanium carbide abrasion-proof stick, chromium carbide abrasion-proof stick are arranged in grinding roller cast moulding
On chamber working face, potassium steel of casting prepares grinding roller of vertical mill roll body.
3) expose the gap Nei Dui of carbine abrasion-proof stick, titanium carbide abrasion-proof stick, chromium carbide abrasion-proof stick on roll cylinder surface
Weld high-wearing feature material, gage of wire 1.6mm；Using DC reverse connection method；Welding parameter are as follows: welding current 350A, weldingvoltage
28V, speed of welding 400mm/min.
4) there is no the portion of truncated cone-shaped carbine abrasion-proof stick, titanium carbide abrasion-proof stick, chromium carbide abrasion-proof stick on roll cylinder surface
Position built-up welding high-wearing feature material, gage of wire 1.6mm；Using DC reverse connection method；Welding parameter are as follows: welding current 350A, welding
Voltage 28V, speed of welding 400mm/min.
Embodiment 2:
1) truncated rectangular pyramids shape carbine abrasion-proof stick, titanium carbide abrasion-proof stick, chromium carbide abrasion-proof stick, the bottom circumscribed circle half of truncated rectangular pyramids are prepared
Diameter is 10mm, and the incline of truncated rectangular pyramids and the angle of bottom surface are 75 °, the high 12mm of truncated rectangular pyramids.
2) several truncated rectangular pyramids shape carbine abrasion-proof sticks, titanium carbide abrasion-proof stick, chromium carbide abrasion-proof stick are arranged in grinding roller casting
On working surface of mould cavity, cast alloys steel prepares grinding roller of vertical mill roll body.
3) expose the gap Nei Dui of carbine abrasion-proof stick, titanium carbide abrasion-proof stick, chromium carbide abrasion-proof stick on roll cylinder surface
Weld high-wearing feature material, gage of wire 2.0mm；Using DC reverse connection method；Welding parameter are as follows: welding current 380A, weldingvoltage
29V, speed of welding 420mm/min.
4) there is no truncated rectangular pyramids shape carbine abrasion-proof stick, titanium carbide abrasion-proof stick, chromium carbide abrasion-proof stick on roll cylinder surface
Position built-up welding high-wearing feature material, gage of wire 2.0mm；Using DC reverse connection method；Welding parameter are as follows: welding current 380A, weldering
Meet voltage 29V, speed of welding 420mm/min.
Embodiment 3:
1) six prismatic table shape carbine abrasion-proof sticks, titanium carbide abrasion-proof stick, chromium carbide abrasion-proof stick, the bottom circumscribed circle half of six terrace with edges are prepared
Diameter is 15mm, and the incline of six terrace with edges and the angle of bottom surface are 85 °, the high 12mm of six terrace with edges.
2) several six prismatic table shapes carbine abrasion-proof sticks, titanium carbide abrasion-proof stick, chromium carbide abrasion-proof stick are arranged in grinding roller casting
On working surface of mould cavity, rich chromium cast iron of casting prepares grinding roller of vertical mill roll body.
3) expose the gap Nei Dui of carbine abrasion-proof stick, titanium carbide abrasion-proof stick, chromium carbide abrasion-proof stick on roll cylinder surface
Weld high-wearing feature material, gage of wire 2.5mm；Using DC reverse connection method；Welding parameter are as follows: welding current 420A, weldingvoltage
30V, speed of welding 450mm/min.
4) there is no truncated rectangular pyramids shape carbine abrasion-proof stick, titanium carbide abrasion-proof stick, chromium carbide abrasion-proof stick on roll cylinder surface
Position built-up welding high-wearing feature material, gage of wire 2.5mm；Using DC reverse connection method；Welding parameter are as follows: welding current 420A, weldering
Meet voltage 30V, speed of welding 450mm/min.
Embodiment 4:
1) five prismatic table shape carbine abrasion-proof sticks, titanium carbide abrasion-proof stick, chromium carbide abrasion-proof stick, the bottom circumscribed circle half of five terrace with edges are prepared
Diameter is 16mm, and the incline of five terrace with edges and the angle of bottom surface are 82 °, the high 12mm of five terrace with edges.
2) several five prismatic table shapes carbine abrasion-proof sticks, titanium carbide abrasion-proof stick, chromium carbide abrasion-proof stick are arranged in grinding roller casting
On working surface of mould cavity, spheroidal graphite cast-iron of casting prepares grinding roller of vertical mill roll body.
3) expose the gap Nei Dui of carbine abrasion-proof stick, titanium carbide abrasion-proof stick, chromium carbide abrasion-proof stick on roll cylinder surface
Weld high-wearing feature material, gage of wire 2.8mm；Using DC reverse connection method；Welding parameter are as follows: welding current 450A, weldingvoltage
32V, speed of welding 500mm/min.
4) there is no truncated rectangular pyramids shape carbine abrasion-proof stick, titanium carbide abrasion-proof stick, chromium carbide abrasion-proof stick on roll cylinder surface
Position built-up welding high-wearing feature material, gage of wire 2.8mm；Using DC reverse connection method；Welding parameter are as follows: welding current 450A, weldering
Meet voltage 32V, speed of welding 500mm/min.
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, and it is other it is any without departing from the spirit and principles of the present invention made by change, modification, substitution, combination, letter
Change, is included within the scope of the present invention.
It is noted that core of the invention be it is compound according to tungsten carbide composite wear-resistant layer, the titanium carbide on roll body surface
Wearing layer, chromium carbide compounded wearing layer, whole overlay cladding, the hardness of several parts distribution gradient from big to small, can make roll body table
Almost abrasion finishes the wearing layer in face simultaneously, and entire wearing layer service life matches, and is conducive to online reparation, improves grinding roller
Whole service life is the innovation in terms of grinding roller of vertical mill.
Claims (4)
1. a kind of grinding roller of vertical mill with surface transverse gradients hardness, which is characterized in that including roll body (1), carbine abrasion-proof stick
(2), titanium carbide abrasion-proof stick (3), chromium carbide abrasion-proof stick (4), filling overlay cladding (5), whole overlay cladding (6), the tungsten carbide
Abrasion-proof stick (2), titanium carbide abrasion-proof stick (3), chromium carbide abrasion-proof stick (4) castingin are into roll body (1) and to expose certain altitude be in bee
Nest shape is filling overlay cladding (5) in honeycomb gap, and the carbine abrasion-proof stick (2), titanium carbide abrasion-proof stick (3), chromium carbide are resistance to
Frotton (4) combines composition tungsten carbide composite wear-resistant layer, titanium carbide composite wear-resistant layer, chromium carbide multiple with filling overlay cladding (5) respectively
Close wearing layer, the tungsten carbide composite wear-resistant layer, titanium carbide composite wear-resistant layer, chromium carbide compounded wearing layer, whole overlay cladding (6)
It is arranged successively from the big end of roll body (1) to small end on roll body (1) surface, outer surface is concordant along roll body (1) bus.
2. the grinding roller of vertical mill according to claim 1 with surface transverse gradients hardness, which is characterized in that the tungsten carbide
The mother of composite wear-resistant layer, titanium carbide composite wear-resistant layer, chromium carbide compounded wearing layer, whole overlay cladding (6) on roll body (1) surface
Line length ratio is 1: x: y: z, and wherein the range of x, y, z is 0.5-3.0.
3. the grinding roller of vertical mill according to claim 1 with surface transverse gradients hardness, which is characterized in that the carbonization
Tungsten abrasion-proof stick (2), titanium carbide abrasion-proof stick (3), the height of chromium carbide abrasion-proof stick (4) are identical as the thickness of whole overlay cladding (6).
4. the grinding roller of vertical mill according to claim 1 or 3 with surface transverse gradients hardness, which is characterized in that described
Carbine abrasion-proof stick (2), titanium carbide abrasion-proof stick (3), chromium carbide abrasion-proof stick (4) section be round table-like or prism-frustum-shaped, radius
Or the lesser one end of circumradius is placed in roll body (1) outside, radius or the biggish one end of circumradius are placed in roll body
(1) internal；Carbine abrasion-proof stick (2), titanium carbide abrasion-proof stick (3), chromium carbide abrasion-proof stick (4) radius or the circumradius
The radius of biggish one end is 6-20mm, the bus of rotary table or the incline of terrace with edge and the angle of bottom surface is 59 ° -89 °.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910162183.XA CN109876898A (en) | 2019-03-05 | 2019-03-05 | A kind of grinding roller of vertical mill with surface transverse gradients hardness |
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|---|---|---|---|
| CN201910162183.XA CN109876898A (en) | 2019-03-05 | 2019-03-05 | A kind of grinding roller of vertical mill with surface transverse gradients hardness |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110252463A (en) * | 2019-06-24 | 2019-09-20 | 郑州机械研究所有限公司 | A kind of abrasion-proof structure and preparation method thereof being easily repaired |
| CN111389520A (en) * | 2020-03-04 | 2020-07-10 | 常熟市电力耐磨合金铸造有限公司 | Grinding roller of vertical mill and production method thereof |
| CN111993295A (en) * | 2020-06-16 | 2020-11-27 | 上海新欣晶圆半导体科技有限公司 | Grinding wheel with one coarse groove and four fine grooves and application thereof |
| CN114505135A (en) * | 2022-01-21 | 2022-05-17 | 郑州机械研究所有限公司 | Metal-based ceramic composite grinding roller and preparation method thereof |
| CN114939471A (en) * | 2022-05-23 | 2022-08-26 | 郑州机械研究所有限公司 | Wear-resistant structure |
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| CN108772136A (en) * | 2018-07-06 | 2018-11-09 | 郑州机械研究所有限公司 | A kind of dismountable wear resistant roll of wearing layer |
| CN209597316U (en) * | 2019-03-05 | 2019-11-08 | 郑州机械研究所有限公司 | A kind of grinding roller of vertical mill with surface transverse gradients hardness |
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| CN110252463B (en) * | 2019-06-24 | 2023-05-05 | 郑州机械研究所有限公司 | Wear-resistant structure convenient to repair and preparation method thereof |
| CN111389520A (en) * | 2020-03-04 | 2020-07-10 | 常熟市电力耐磨合金铸造有限公司 | Grinding roller of vertical mill and production method thereof |
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