CA2202213A1 - Grinding roll and method for operation and repair thereof - Google Patents
Grinding roll and method for operation and repair thereofInfo
- Publication number
- CA2202213A1 CA2202213A1 CA002202213A CA2202213A CA2202213A1 CA 2202213 A1 CA2202213 A1 CA 2202213A1 CA 002202213 A CA002202213 A CA 002202213A CA 2202213 A CA2202213 A CA 2202213A CA 2202213 A1 CA2202213 A1 CA 2202213A1
- Authority
- CA
- Canada
- Prior art keywords
- roll
- profiled bodies
- roll surface
- grinding
- pin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/28—Details
- B02C4/30—Shape or construction of rollers
- B02C4/305—Wear resistant rollers
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
Abstract
The invention relates to a grinding roll with pin-shaped profiled bodies embedded in the roll body, the roll body having a hardness of more than 56 HRc. This grinding roll is used in comminuting operation until a substantial proportion of all profiled bodies is completely worn and/or has fallen out of the roll body. For the repair of wear the roll surface is brought back to a cylindrical shape by partial removal of material, after which new recesses are produced and new profiled bodies are inserted.
Description
Grindin~ roll and method for operation and repair thereof The invention relates to a grinding roll according to the preamble to Claim 1, and also to a method for operation and repair thereof according to the preamble to Claim 8.
Grinding rolls of the type referred to in the preamble to Claim 1 are known for example from EU-B1 O 516 952. In the operation of such grinding rolls the spaces between the pin-shaped profiled bodies projecting with a part of their length over the roll surface are filled with material for comminution which is fed into the material bed roll mill, and thus this constitutes a certain autogenic protection against wear for the surface of the roll However, in the course of the operating time the pin-shaped profiled body are worn increasingly and as a consequence of this the material of the roll body, i e. the base material, which forms the surface of the roll is then subjected to unavoidable wear which is generally greater than the already considerable wear on the profiled bodies. The material hitherto used for the surface of the roll body has a hardness of 40 to 45 HRc (Rockwell hardness) If the wear on the pin-shaped profiled bodies and the roll surface has reached a certain amount, then a repair of the wear usually takes place in such a way that first of all the profiled bodies are removed, which in the case of fixing by glueing generally involves burning off of the entire surface Then the roll surface is provided with a thick, often multi-layer build-up welding which must then, however, be face turned in order to produce the required cylindrical roll surface Finally, in a last operation new pin-shaped profiled bodies must be inserted into the roll surface Such repair of wear is extraordinarily costly.
The object of the invention, therefore, is to develop a grinding roll and method for operation and repair thereof which permit a substantially more economical repair of wear.
This object is achieved according to the invention by the characterising features of Claims 1 and 8. Advantageous embodiments of the invention are the subject matter of the subordinate claims According to the invention a material with a substantially greater hardness than those which were usual hitherto is used as the material of the roll body forming the roll surface, i.e. as the base material of the grinding roll According to the invention this hardness is greater than 56 HRc (Rockwell hardness); it is preferably between 60 and 68 HRc, particularly between 62 and 64 HRc In this case the grinding roll is kept in comminuting operation until a substantial proportion of all profiled bodies, preferably at least 80%, is completely worn and/or has fallen out of the roll body For repair of the wear the roll surface is then brought back to a cylindrical shape by partial removal of material, and new recesses are produced in the roll surface and new profiled bodies are inserted into these recesses.
Due to the use of an extraordinarily hard base material the material of the roll body forming the roll surface is worn approximately only to the same extent as the pin-shaped profiled bodies Thus even in the case of increasing wear of the profiled bodies not only is an autogenic protection against wear of the roll surface maintained (in which moreover material for grinding is deposited between the profiled bodies and thus protects the roll surface), but due to the reduced wear of the base material - because of the greater hardness -the pin-shaped profiled bodies embedded in the roll surface retain a sufficient anchorage during a substantially longer operating time, so that they are a match for the radially and tangentially acting forces which occur during the grinding operation. Not until the pin-shaped profiled bodies and the roll surface are so far worn that only a small part of the length of the profiled bodies is anchored in the roll body do the profiled bodies finally break away.
Due to the use of a base material with great hardness and thus with relatively high resistance to wear there is still, after individual pin-shaped profiled bodies have fallen out, a sufficiently long operating time remaining in which a further large number of profiled bodies can also reach this critical amount of wear for breaking away, without the base material, i.e the material of the roll body forming the roll surface, undergoing unacceptably severe wear beforehand As tests have shown, with suitable dimensioning it is possible without further effort to ensure that a large proportion of the pin-shaped profiled bodies break away from the roll surface approximately simultaneously. In this way the very cost-intensive removal of a large number of profiled bodies during the repair of wear is minimised.
The use of a particularly hard roll body material (in place of the segment material usually used) also provides the advantage of a higher compression strength, which makes the replacement of the pin-shaped profiled bodies easier. In fact, due to the increased compression strength both in the grinding operation and also during any removal of the remaining profiled bodies within the framework of the repair of wear the danger of plastic deformation of the base material in the base of the bore and thus in the supporting region of the profiled bodies is substantially reduced. An undeformed bore ensures a substantially better removal of the remaining profiled bodies Also as a result considerable savings of costs can be achieved in the repair of wear of the grinding roll.
According to the invention the hardness of the pin-shaped profiled bodies is advantageously between 1000 and 1700 HV
<Vickers hardness).
The material of the roll body forming the roll surface can ad~antageously consist of an alloy which is known under the trade name Nihard IV or the alloy designation G-X 300 CrNiSi 952. It contains 2 5 to 3.5% C, 1.5 to 2.2% Si, 0 3 to 0.7%
Mn, 8 to 10% Cr, 4.5 to 6.5% Ni and up to 0.5% Mo. A further suitable material with great hardness for the material of the roll body forming the roll surface is chrome chill casting (alloy designations G-X 300 CrMo 153 or G-X 300 CrMoNi 1521) with 2.3 to 3.6% C, 0.2 to 0.8% Si, 0.5 to 1.0% Mn, 14 to 17%
Cr, 0.8 to 1 2% Ni and 1.0 to 3 0% or, respectively, 1.8 to 2.2% Mo.
In the initial state the pin-shaped profiled bodies advantageously have a length of 15 to 50 mm, preferably from 20 to 25 mm, and they project with a length between 3 and 10 mm, preferably between 4 and 8 mm, over the roll surface.
The invention is illustrated schematically in the drawings, in which:
Figure 1 shows a partial section through a roll body with embedded pin-shaped profiled bodies, Figures 2 and 3 shows schematic representations of a new and a worn grinding roll, Figures 4 and 5 show schematic representations (corresponding to Figures 2 and 3) of a variant.
In the roll body 1 of the grinding roll of a material bed roll mill there are pro~ided a plurality of recesses (in the form of blind bores) into which pin-shaped profiled bodies 2 are embedded so that they only project with a part of their length over the roll surface The profiled bodies can for example have a length of 20 to 25 mm and can project approximately 4 5 mm over the roll surface 3.
In this case the pin-shaped profiled bodies 2 have a cylindrical main part 2a and ends 2b and 2c which are constructed approximately in the shape of truncated cones The end 2b can for example have a height of approximately 1 mm and the end 2c can have a height of approximately 2.5 mm The hardness of the material of the roll body 1 forming the roll surface 3 is greater than 56 HRc; it preferably lies between 60 and 68 HRc, in particular between 62 and 64 HRc.
The pin-shaped profiled bodies consist of a material which is even harder than the material of the roll body l forming the roll surface. The hardness of the profiled bodies 2 is advantageously between lO00 and 1700 HV.
In the embodiment illustrated in Figures 2 and 3 the roll surface 3' is occupied approximately over its entire axial length L by pin-shaped profiled bodies 2 in uniform spacing.
After a certain operating time of this roll according to figure 2 the wear pattern according to Figure 3 is produced:
Whilst in the two axial edge regions of the roll body there are still pin-shaped profiled bodies 2 present, the central main part of the roll surface is worn by an amount a (of for example 20 to 45 mm, depending upon the original height of the profiled bodies 2) The repair of the wear takes place in such a way that first of all the pin-shaped profiled bodies remaining in the edge regions are removed. This advantageously takes place by mechanical pulling (after carbonisation of the glue used for fixing) or by burning out of the profiled bodies. A further possibility is to remove the remaining remnants of the profiled bodies by abrasion.
Then the base material, i.e. the material of the roll body forming the roll surface, is brought to a cylindrical shape by machining by turning and/or grinding In so far as it is necessary, individual points on the roll surface can be further improved at a later stage by build-up welding.
However, in many cases this will not be necessary. Then the recesses to receive new profiled bodies are bored and new pin-shaped profiled bodies are inserted and fixed by means of a glue In the variant illustrated schematically in Figures 4 and 5 the roll surface 3" in the new state (Figure 4) is only occupied in the central main part Lm of its length by pin-shaped profiled bodies Z, whilst the two axial edge regions of the roll surface have no such profiled bodies. The part Lm of the roll length which is occupied by profiled bodies 2 can preferably amount to 70 to 90% of the total length of the roll.
As a result after a certain operating time the pattern of wear according to Figure 5 is produced: the roll has lost almost all profiled bodies. Consequently no or hardly any profiled bodies have to be removed here before the roll surface is brought back to the cylindrical shape by partial material removal
Grinding rolls of the type referred to in the preamble to Claim 1 are known for example from EU-B1 O 516 952. In the operation of such grinding rolls the spaces between the pin-shaped profiled bodies projecting with a part of their length over the roll surface are filled with material for comminution which is fed into the material bed roll mill, and thus this constitutes a certain autogenic protection against wear for the surface of the roll However, in the course of the operating time the pin-shaped profiled body are worn increasingly and as a consequence of this the material of the roll body, i e. the base material, which forms the surface of the roll is then subjected to unavoidable wear which is generally greater than the already considerable wear on the profiled bodies. The material hitherto used for the surface of the roll body has a hardness of 40 to 45 HRc (Rockwell hardness) If the wear on the pin-shaped profiled bodies and the roll surface has reached a certain amount, then a repair of the wear usually takes place in such a way that first of all the profiled bodies are removed, which in the case of fixing by glueing generally involves burning off of the entire surface Then the roll surface is provided with a thick, often multi-layer build-up welding which must then, however, be face turned in order to produce the required cylindrical roll surface Finally, in a last operation new pin-shaped profiled bodies must be inserted into the roll surface Such repair of wear is extraordinarily costly.
The object of the invention, therefore, is to develop a grinding roll and method for operation and repair thereof which permit a substantially more economical repair of wear.
This object is achieved according to the invention by the characterising features of Claims 1 and 8. Advantageous embodiments of the invention are the subject matter of the subordinate claims According to the invention a material with a substantially greater hardness than those which were usual hitherto is used as the material of the roll body forming the roll surface, i.e. as the base material of the grinding roll According to the invention this hardness is greater than 56 HRc (Rockwell hardness); it is preferably between 60 and 68 HRc, particularly between 62 and 64 HRc In this case the grinding roll is kept in comminuting operation until a substantial proportion of all profiled bodies, preferably at least 80%, is completely worn and/or has fallen out of the roll body For repair of the wear the roll surface is then brought back to a cylindrical shape by partial removal of material, and new recesses are produced in the roll surface and new profiled bodies are inserted into these recesses.
Due to the use of an extraordinarily hard base material the material of the roll body forming the roll surface is worn approximately only to the same extent as the pin-shaped profiled bodies Thus even in the case of increasing wear of the profiled bodies not only is an autogenic protection against wear of the roll surface maintained (in which moreover material for grinding is deposited between the profiled bodies and thus protects the roll surface), but due to the reduced wear of the base material - because of the greater hardness -the pin-shaped profiled bodies embedded in the roll surface retain a sufficient anchorage during a substantially longer operating time, so that they are a match for the radially and tangentially acting forces which occur during the grinding operation. Not until the pin-shaped profiled bodies and the roll surface are so far worn that only a small part of the length of the profiled bodies is anchored in the roll body do the profiled bodies finally break away.
Due to the use of a base material with great hardness and thus with relatively high resistance to wear there is still, after individual pin-shaped profiled bodies have fallen out, a sufficiently long operating time remaining in which a further large number of profiled bodies can also reach this critical amount of wear for breaking away, without the base material, i.e the material of the roll body forming the roll surface, undergoing unacceptably severe wear beforehand As tests have shown, with suitable dimensioning it is possible without further effort to ensure that a large proportion of the pin-shaped profiled bodies break away from the roll surface approximately simultaneously. In this way the very cost-intensive removal of a large number of profiled bodies during the repair of wear is minimised.
The use of a particularly hard roll body material (in place of the segment material usually used) also provides the advantage of a higher compression strength, which makes the replacement of the pin-shaped profiled bodies easier. In fact, due to the increased compression strength both in the grinding operation and also during any removal of the remaining profiled bodies within the framework of the repair of wear the danger of plastic deformation of the base material in the base of the bore and thus in the supporting region of the profiled bodies is substantially reduced. An undeformed bore ensures a substantially better removal of the remaining profiled bodies Also as a result considerable savings of costs can be achieved in the repair of wear of the grinding roll.
According to the invention the hardness of the pin-shaped profiled bodies is advantageously between 1000 and 1700 HV
<Vickers hardness).
The material of the roll body forming the roll surface can ad~antageously consist of an alloy which is known under the trade name Nihard IV or the alloy designation G-X 300 CrNiSi 952. It contains 2 5 to 3.5% C, 1.5 to 2.2% Si, 0 3 to 0.7%
Mn, 8 to 10% Cr, 4.5 to 6.5% Ni and up to 0.5% Mo. A further suitable material with great hardness for the material of the roll body forming the roll surface is chrome chill casting (alloy designations G-X 300 CrMo 153 or G-X 300 CrMoNi 1521) with 2.3 to 3.6% C, 0.2 to 0.8% Si, 0.5 to 1.0% Mn, 14 to 17%
Cr, 0.8 to 1 2% Ni and 1.0 to 3 0% or, respectively, 1.8 to 2.2% Mo.
In the initial state the pin-shaped profiled bodies advantageously have a length of 15 to 50 mm, preferably from 20 to 25 mm, and they project with a length between 3 and 10 mm, preferably between 4 and 8 mm, over the roll surface.
The invention is illustrated schematically in the drawings, in which:
Figure 1 shows a partial section through a roll body with embedded pin-shaped profiled bodies, Figures 2 and 3 shows schematic representations of a new and a worn grinding roll, Figures 4 and 5 show schematic representations (corresponding to Figures 2 and 3) of a variant.
In the roll body 1 of the grinding roll of a material bed roll mill there are pro~ided a plurality of recesses (in the form of blind bores) into which pin-shaped profiled bodies 2 are embedded so that they only project with a part of their length over the roll surface The profiled bodies can for example have a length of 20 to 25 mm and can project approximately 4 5 mm over the roll surface 3.
In this case the pin-shaped profiled bodies 2 have a cylindrical main part 2a and ends 2b and 2c which are constructed approximately in the shape of truncated cones The end 2b can for example have a height of approximately 1 mm and the end 2c can have a height of approximately 2.5 mm The hardness of the material of the roll body 1 forming the roll surface 3 is greater than 56 HRc; it preferably lies between 60 and 68 HRc, in particular between 62 and 64 HRc.
The pin-shaped profiled bodies consist of a material which is even harder than the material of the roll body l forming the roll surface. The hardness of the profiled bodies 2 is advantageously between lO00 and 1700 HV.
In the embodiment illustrated in Figures 2 and 3 the roll surface 3' is occupied approximately over its entire axial length L by pin-shaped profiled bodies 2 in uniform spacing.
After a certain operating time of this roll according to figure 2 the wear pattern according to Figure 3 is produced:
Whilst in the two axial edge regions of the roll body there are still pin-shaped profiled bodies 2 present, the central main part of the roll surface is worn by an amount a (of for example 20 to 45 mm, depending upon the original height of the profiled bodies 2) The repair of the wear takes place in such a way that first of all the pin-shaped profiled bodies remaining in the edge regions are removed. This advantageously takes place by mechanical pulling (after carbonisation of the glue used for fixing) or by burning out of the profiled bodies. A further possibility is to remove the remaining remnants of the profiled bodies by abrasion.
Then the base material, i.e. the material of the roll body forming the roll surface, is brought to a cylindrical shape by machining by turning and/or grinding In so far as it is necessary, individual points on the roll surface can be further improved at a later stage by build-up welding.
However, in many cases this will not be necessary. Then the recesses to receive new profiled bodies are bored and new pin-shaped profiled bodies are inserted and fixed by means of a glue In the variant illustrated schematically in Figures 4 and 5 the roll surface 3" in the new state (Figure 4) is only occupied in the central main part Lm of its length by pin-shaped profiled bodies Z, whilst the two axial edge regions of the roll surface have no such profiled bodies. The part Lm of the roll length which is occupied by profiled bodies 2 can preferably amount to 70 to 90% of the total length of the roll.
As a result after a certain operating time the pattern of wear according to Figure 5 is produced: the roll has lost almost all profiled bodies. Consequently no or hardly any profiled bodies have to be removed here before the roll surface is brought back to the cylindrical shape by partial material removal
Claims (10)
1. Grinding roll for a material bed roll mill, with a plurality of pin-shaped profiled bodies which are embedded with a part of their length in recesses in the roll body and with the remaining part of their length project over the roll surface and which consist of a material which is harder than the material of the roll body forming the roll surface, characterised in that the hardness of the material of the roll body forming the roll surface is greater than 56 HRc (Rockwell hardness), preferably between 60 and 68 HRc, particularly between 62 and 64 HRc.
2. Grinding roll as claimed in Claim 1, characterised in that the hardness of the pin-shaped profiled bodies is advantageously between 1000 and 1700 HV (Vickers hardness).
3. Grinding roll as claimed in Claim 1, characterised in that the material of the roll body forming the roll surface consists of an alloy which contains 2.5 to 3.5% C, 1.5 to 2.2%
Si, 0.3 to 0.7% Mn, 8 to 10% Cr, 4.5 to 6.5% Ni and up to 0.5%
Mo.
Si, 0.3 to 0.7% Mn, 8 to 10% Cr, 4.5 to 6.5% Ni and up to 0.5%
Mo.
4. Grinding roll as claimed in Claim 1, characterised in that the material of the roll body forming the roll surface consists of an alloy which contains 2.3 to 3.6% C, 0.2 to 0.8%
Si, 0.5 to 1.0% Mn, 14 to 17% Cr, 0.8 to 1.2% Ni and 1.0 to 3.0% or, respectively, 1.8 to 2.2% Mo.
Si, 0.5 to 1.0% Mn, 14 to 17% Cr, 0.8 to 1.2% Ni and 1.0 to 3.0% or, respectively, 1.8 to 2.2% Mo.
5. Grinding roll as claimed in Claim 1, characterised in that in the initial state the pin-shaped profiled bodies have a length of 15 to 50 mm, preferably from 20 to 25 mm, and they project with a length between 3 and 10 mm, preferably between 4 and 8 mm, over the roll surface.
6. Grinding roll as claimed in Claim 1, characterised in that the pin-shaped profiled bodies have a cylindrical main part and ends constructed approximately in the shape of truncated cones.
7. Grinding roll as claimed in Claim 1, characterised in that the roll surface is occupied by pin-shaped profiled bodies in uniform spacing only in the central main part of its length which is exposed to high wear, whilst the two axial edge regions of the roll surface which are exposed to less wear have no pin-shaped profiled bodies.
8. Method for operation during which wear is likely and for subsequent repair of wear of a grinding roll for a material bed roll mill, with a plurality of pin-shaped profiled bodies which are embedded with a part of their length in recesses in the roll body and with the remaining part of their length project over the roll surface and which consist of a material which is harder than the material of the roll body forming the roll surface, wherein the hardness of the material of the roll body forming the roll surface is greater than 56 HRc (Rockwell hardness), preferably between 60 and 68 HRc, particularly between 62 and 64 HRc, characterised in that a) the grinding roll is kept in comminuting operation until a substantial proportion of all profiled bodies, preferably at least 80%, is completely worn and/or has fallen out of the roll body b) and that for repair of the wear the roll surface is then brought back to a cylindrical shape by partial removal of material, new recesses are produced in the roll surface and new profiled bodies are inserted into these recesses.
9. Method as claimed in Claim 8, characterised in that before the removal of material the remaining profiled bodies still present in the roll body are mechanically removed, preferably by pulling after carbonisation of a glue used for fixing the profiled bodies.
10. Method as claimed in Claim 8, characterised in that the removal of material takes place by machining by turning and/or grinding and any subsequent build-up welding is undertaken only in order to improve individual points on the roll surface.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19618143.7 | 1996-05-06 | ||
| DE19618143A DE19618143A1 (en) | 1996-05-06 | 1996-05-06 | Roller mill grinding roller with projecting anchored pins for longer grinding time |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2202213A1 true CA2202213A1 (en) | 1997-11-06 |
Family
ID=7793480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002202213A Abandoned CA2202213A1 (en) | 1996-05-06 | 1997-04-09 | Grinding roll and method for operation and repair thereof |
Country Status (5)
| Country | Link |
|---|---|
| AU (1) | AU710348B2 (en) |
| BR (1) | BR9703075A (en) |
| CA (1) | CA2202213A1 (en) |
| DE (1) | DE19618143A1 (en) |
| ZA (1) | ZA973379B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100058570A1 (en) * | 2007-03-13 | 2010-03-11 | Polyslus AG | Method for reconditioning a used grinding roller |
| US7946518B2 (en) | 2007-04-17 | 2011-05-24 | Polysius Ag | Grinding roller and method for the reconditioning thereof |
| CN102470371A (en) * | 2009-08-17 | 2012-05-23 | Khd洪保德韦达克有限公司 | Roller press grid armoring comprising ring-shaped bolts |
| CN102463170A (en) * | 2010-10-28 | 2012-05-23 | 三菱综合材料株式会社 | Apparatus for fracturing polycrystalline silicon and method for producing fractured fragments of polycrystalline silicon |
| CN102463167A (en) * | 2010-10-28 | 2012-05-23 | 三菱综合材料株式会社 | Apparatus for fracturing polycrystalline silicon and method for producing fractured fragments of polycrystalline silicon |
| US8420201B2 (en) | 2009-07-09 | 2013-04-16 | Scoperta, Inc. | Wear-resistant attachments for high-wear applications |
| CN104028945A (en) * | 2014-06-19 | 2014-09-10 | 马钢(集团)控股有限公司 | Method for repairing broken cylindrical teeth of roller surfaces of high-pressure roller mills |
| WO2019110607A1 (en) * | 2017-12-05 | 2019-06-13 | Element Six Gmbh | High pressure grinding roller stud |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19738228A1 (en) * | 1997-09-02 | 1999-03-04 | Kloeckner Humboldt Wedag | Process for recycling grinding brittle material and grinding plant for this |
| EP1077087B1 (en) * | 1999-08-14 | 2003-05-28 | KHD Humboldt-Wedag AG | Milling roller and method for its manufacturing |
| DE10137131A1 (en) * | 2001-07-30 | 2003-02-13 | Polysius Ag | Roller for high pressure fluidized bed grinder has surface profiling with wear-resistant profiled bodies whose wear resistance matches stresses on rolling surface to achieve uniform wear over width of roller |
| DE102006003230A1 (en) * | 2006-01-24 | 2007-07-26 | Khd Humboldt Wedag Gmbh | Pair of rollers e.g. for high pressure roller presses for milling granular goods under pressure, has two swiveling stored rotatable rollers which move in opposite directions |
| DE102006010042A1 (en) * | 2006-03-04 | 2007-09-06 | Khd Humboldt Wedag Gmbh | Hard body for the autogenous wear protection of roll surfaces |
| DE102006028546A1 (en) * | 2006-06-21 | 2007-12-27 | Polysius Ag | Process for reprocessing a used grinding roller |
| DE102008014809A1 (en) * | 2008-03-18 | 2009-09-24 | Khd Humboldt Wedag Gmbh | Method for all-round renewal of a grinding roller |
| AU2010239141A1 (en) * | 2009-04-20 | 2011-11-10 | Hofmann Engineering Pty Ltd | Pressure roller |
| DE102010024221A1 (en) | 2010-06-18 | 2011-12-22 | Khd Humboldt Wedag Gmbh | Profiled bandage for a roller press |
| DE102010060600B3 (en) * | 2010-11-16 | 2012-03-01 | Polysius Ag | Method for treating used roll bodies of roller mill, involves introducing socket into extended turned cylindrical or conical bore by shrinking process and turning socket in order to centrally clamp roller body |
| CN104190497A (en) * | 2014-09-17 | 2014-12-10 | 南京凯盛国际工程有限公司 | Novel hexagonal armor roller surface for roller press |
| CN104526248B (en) * | 2014-11-04 | 2017-01-25 | 马鞍山格林环保科技股份有限公司 | Column nail roller surface repairing method of high-pressure roller mill |
| CN105256241B (en) * | 2015-11-13 | 2017-07-11 | 北方工业大学 | A kind of High strength bolt |
| CN107900606B (en) * | 2017-11-08 | 2019-12-31 | 中建材（合肥）粉体科技装备有限公司 | Wear homogenization method for stud roller surface |
| CN107866306B (en) * | 2017-11-14 | 2019-06-18 | 成都利君实业股份有限公司 | A kind of stud formula Roller of High and its production method |
| CN111299958B (en) * | 2020-03-30 | 2024-07-09 | 安徽马钢设备检修有限公司 | Stud embedding device on roller of mine high-pressure roller mill and welding repair process thereof |
| CN111760636A (en) * | 2020-07-03 | 2020-10-13 | 浙江申轮水泥机械制造有限公司 | Roll sleeve of roll squeezer and manufacturing process thereof |
| CN114377775B (en) * | 2022-01-19 | 2024-02-09 | 郑州机械研究所有限公司 | Extrusion roller sleeve with high rigidity and high crack resistance |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4321427A1 (en) * | 1992-07-09 | 1994-01-13 | Kloeckner Humboldt Deutz Ag | Wear-resistant roller for use in two-roller machines, especially in high-pressure roller presses |
| DE4324074A1 (en) * | 1993-07-17 | 1995-01-19 | Kloeckner Humboldt Deutz Ag | Wear-resistant surface armor for the rollers of high-pressure roller presses and method for building such a roller armor |
| DE4431563A1 (en) * | 1994-09-05 | 1996-03-07 | Kloeckner Humboldt Deutz Ag | Wear-resistant surface armor for the rollers of high-pressure roller presses for pressure reduction of granular goods (documents for P 44 44 337.4 given) |
-
1996
- 1996-05-06 DE DE19618143A patent/DE19618143A1/en not_active Withdrawn
-
1997
- 1997-04-09 CA CA002202213A patent/CA2202213A1/en not_active Abandoned
- 1997-04-14 AU AU17849/97A patent/AU710348B2/en not_active Ceased
- 1997-04-21 ZA ZA9703379A patent/ZA973379B/en unknown
- 1997-05-06 BR BR9703075A patent/BR9703075A/en not_active Application Discontinuation
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100058570A1 (en) * | 2007-03-13 | 2010-03-11 | Polyslus AG | Method for reconditioning a used grinding roller |
| US8316543B2 (en) * | 2007-03-13 | 2012-11-27 | Polysius Ag | Method for reconditioning a used grinding roller |
| US7946518B2 (en) | 2007-04-17 | 2011-05-24 | Polysius Ag | Grinding roller and method for the reconditioning thereof |
| US8420201B2 (en) | 2009-07-09 | 2013-04-16 | Scoperta, Inc. | Wear-resistant attachments for high-wear applications |
| US9216555B2 (en) | 2009-07-09 | 2015-12-22 | Scoperta, Inc. | Wear-resistant attachments for high-wear applications |
| CN102470371A (en) * | 2009-08-17 | 2012-05-23 | Khd洪保德韦达克有限公司 | Roller press grid armoring comprising ring-shaped bolts |
| CN102463170A (en) * | 2010-10-28 | 2012-05-23 | 三菱综合材料株式会社 | Apparatus for fracturing polycrystalline silicon and method for producing fractured fragments of polycrystalline silicon |
| CN102463167A (en) * | 2010-10-28 | 2012-05-23 | 三菱综合材料株式会社 | Apparatus for fracturing polycrystalline silicon and method for producing fractured fragments of polycrystalline silicon |
| CN102463170B (en) * | 2010-10-28 | 2015-11-04 | 三菱综合材料株式会社 | The breaker of polysilicon and the manufacture method of breaking polycrystalline silicon thing |
| CN104028945A (en) * | 2014-06-19 | 2014-09-10 | 马钢(集团)控股有限公司 | Method for repairing broken cylindrical teeth of roller surfaces of high-pressure roller mills |
| WO2019110607A1 (en) * | 2017-12-05 | 2019-06-13 | Element Six Gmbh | High pressure grinding roller stud |
| CN111479632A (en) * | 2017-12-05 | 2020-07-31 | 第六元素公司 | High-pressure grinding roller stud |
Also Published As
| Publication number | Publication date |
|---|---|
| ZA973379B (en) | 1997-11-14 |
| AU1784997A (en) | 1997-11-13 |
| BR9703075A (en) | 1998-11-10 |
| AU710348B2 (en) | 1999-09-16 |
| DE19618143A1 (en) | 1997-11-13 |
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