CN114669362B - Roller sleeve of roller press with full-face column nails on roller surface and manufacturing method thereof - Google Patents
Roller sleeve of roller press with full-face column nails on roller surface and manufacturing method thereof Download PDFInfo
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- CN114669362B CN114669362B CN202210352277.5A CN202210352277A CN114669362B CN 114669362 B CN114669362 B CN 114669362B CN 202210352277 A CN202210352277 A CN 202210352277A CN 114669362 B CN114669362 B CN 114669362B
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- column
- roller
- brazing alloy
- stud
- circular
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- 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
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Rolls And Other Rotary Bodies (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
Abstract
The invention relates to a roller sleeve of a roller press with full-face column nails on the roller surface and a manufacturing method thereof, which are characterized in that: the roll sleeve of the roll press with the roll surface full of the stud consists of a roll sleeve matrix, studs distributed on the roll surface, brazing alloy connected with the studs and a cylinder body made of a thin-wall steel plate for installing the studs and preventing brazing alloy liquid from losing.
Description
Technical Field
The invention discloses a roller sleeve of a roller press with full-face stud and a manufacturing method thereof, relates to a roller sleeve wear-resistant layer design of a roller press for crushing powder and a manufacturing method thereof, and belongs to the technical field of metal material forming and control.
Background
The wear resistance of the roller sleeve of the roller press of the inlaid hard alloy column nails is determined by the proportion of the sum of the sectional areas of the column nails to the area of the roller surface, namely the column nail surface density, the design of the existing inlaid column nail arrangement structure and the restriction of inlaid casting technology are restricted, the column nail surface density is restricted by the heat exchange balance between the column nail heat capacity and the overheat heat capacity of the molten steel flowing into the gaps between the column nails, the column nail surface density has a critical surface density, namely the maximum surface density, wherein the critical surface density refers to the maximum column nail surface density which can finish the complete filling of the gaps between the column nails under the auxiliary conditions of no external field force such as centrifugal force, vibration, external preheating and electromagnetic field, the critical density of the inlaid column nails cannot reach 50%, the wear resistance of the roller sleeve roller surface wear resistance layer is insufficient, the wear resistance of the inlaid column nail roller sleeve needs to be built up in the gaps between the column nails, and the wear resistance layer needs to be regularly built up and maintained.
The invention relates to a roll squeezer roll sleeve with full-face column nails on roll surfaces and a manufacturing method thereof, wherein the roll squeezer roll sleeve with full-face column nails on roll surfaces is a roll squeezer roll sleeve with the roll surfaces of the whole roll sleeve and the column nails being closely connected by rectangular column nails, the roll squeezer roll sleeve with full-face column nails on roll surfaces has wear resistance far higher than that of a cast-in column nail roll sleeve with critical surface density lower than 50%, and no build-up welding maintenance is needed, so that the service life of the roll sleeve is prolonged, and the powder breaking efficiency and the operating rate of the roll squeezer are improved.
Disclosure of Invention
The invention relates to a roll press roll sleeve of a roll surface full-face stud and a manufacturing method thereof, wherein the roll press roll sleeve of the roll surface full-face stud consists of a roll sleeve substrate, closely connected rectangular studs distributed on the roll surface, brazing alloy for connecting the studs and a cylinder body made of thin-wall steel plates for installing the studs and preventing brazing alloy liquid from losing.
The column nail is characterized in that the column nail is in a shape structure and consists of a wear-resistant main body at the head part and a conical cone body for connecting a cast-in column nail at the tail part with a matrix; the wear-resistant main body has the shape and structure that: the direction of the generatrix of the roller sleeve is equal in height, and the shape of the surface vertical to the generatrix is a sector column body which is in a sector shape and is formed by closely connecting and arranging column nails and forms a circular roller sleeve wear-resisting layer with a certain thickness;
the conical cone-shaped body for the insert casting column nail connecting matrix has the shape structure that: the cast-in column nail is connected with a conical cone body of the matrix, the conical cone body is connected with a circular angle of 40-70 degrees in a transition manner, and the top of the conical cone body is a spherical crown body;
the cylinder is made of thin-wall steel plates with the wall thickness of 1 mm-4 mm, the cylinder with the outer diameter of the roller sleeve is made of thin-wall steel plates with the wall thickness of 1 mm-4 mm, two layers of circular steel plates with the radial size of 5-10 mm larger than the length of the abrasion-resistant main body of the column nail are welded at the bottom of the cylinder, the distance between the two layers of circular steel plates is the machining allowance of the lower end face of the roller sleeve, the bottom circular steel plates are steel plates supported on a casting surface, the circular steel plates above the bottom circular steel plates, namely the circular steel plates at the upper layer of the bottom, are used for preventing the loss of bottom brazing alloy liquid, circular steel plates which are symmetrically distributed at the bottom are welded at the top after the fixing column nails and the brazing alloy plates are installed, the circular steel plates at the bottom are used for preventing the brazing alloy liquid at the top and molten steel mixture, and the distance between the two layers of circular steel plates at the top is the machining allowance of the upper end face of the roller sleeve.
The invention relates to a roller sleeve of a roller press with full-face stud on the roller surface and a manufacturing method thereof, and the concrete implementation method of the roller sleeve comprises the following steps:
1) A brazing alloy plate with the fixed thickness of 0.2mm to 1mm and the melting point lower than that of the brazing alloy used for brazing the circumferential surface of the abrasion-resistant main body of the stud is paved on the inner circumferential surface of a cylinder body made of the thin-wall steel plate used for installing the stud and preventing the brazing alloy liquid from losing and is closely attached to the steel plate, and the brazing alloy plate is used for solidifying and feeding the brazing alloy with the higher melting point of the circumferential surface of the abrasion-resistant main body of the stud;
2) Placing a layer of integral or spliced circular ring-shaped brazing alloy plate with the same size as the circular ring-shaped steel plate and the thickness of 0.2mm to 1mm on the circular ring-shaped steel plate at the upper layer of the bottom;
3) Placing a circle of column nails of the brazing alloy plate, the circular arc end face of the column nail wear-resistant main body of which is tightly attached to the inner surface of the cylinder, between every two layers of column nails, of which the thickness is 0.2-1 mm, the width is the same as the dimension of the column nails in the bus direction, and the length is 5-10 mm longer than the length of the column nail wear-resistant main body, arranging and fixing the column nails and the brazing alloy plate layer by layer to the top of the roller sleeve according to the method, placing a layer of circular brazing alloy plate with the thickness of 0.2-1 mm on the top of the column nails, tightly attaching the circular ring steel plate at the lower layer of the top to the circular ring brazing alloy plate, welding the circular ring steel plate at the top to the cylinder, and finally completely forming a roller press roller sleeve wear-resistant layer body, in which the brazing roller surface is full of the column nails is heated by the overheat heat capacity and solidification heat capacity of molten steel to be poured, and the circular ring and rectangular brazing alloy plate with the length of the column nail wear-resistant main body is 5-10 mm, and the circular brazing alloy plate and the rectangular brazing alloy plate is used for supplementing welding liquid between the column nails;
4) And placing the wear-resistant layer body of the roller press roller sleeve, which is formed by heating and brazing the full-face stud on the roller surface by utilizing the overheat heat capacity and the solidification heat capacity of molten steel, in a cavity of the casting roller sleeve, and solidifying the cast molten steel to obtain the roller press roller sleeve with the full-face stud on the roller surface.
Claims (12)
1. A roller sleeve of a roller press with full-face column nails on the roller surface is characterized in that: the roll sleeve of the roll press with the full-face stud is composed of a roll sleeve matrix, studs covered with the roll surface, brazing alloy connected with the studs and a cylinder body made of a thin-wall steel plate for installing the studs and preventing brazing alloy liquid from losing, the brazing alloy plate between the studs and the studs is heated by utilizing overheat heat capacity and solidification heat capacity of molten steel, the brazing alloy is melted, the studs and the studs are connected for brazing to form a roll sleeve wear-resisting layer whole, a conical cone body at the tail of the stud and the matrix form a roll sleeve with the full-face stud formed by metallurgically bonding the surface of the conical cone body of the casting matrix, and the conical cone body at the tail of the stud is designed to improve bonding strength between the stud and the matrix, improve the holding force of the matrix on the stud and balance stress fields between the stud and the matrix;
the column nail is characterized in that the column nail is composed of a fan-shaped column body of the head wear-resistant main body and a conical cone body for connecting the cast-in column nail at the tail with a matrix; the wear-resistant main body has the shape and structure that: the shape of the surface which is equal in height and perpendicular to the bus is a sector column body of a circular roller sleeve wear-resistant layer with certain thickness, wherein the column nails are closely connected and arranged;
the conical cone-shaped body for the insert casting column nail connecting matrix has the shape structure that: the cast-in column nail is connected with a conical cone body of the base body, the conical cone body is in transition connection with a circular angle of a sector column body of the wear-resistant main body, the included angle of the conical cone body is 40-70 degrees, and the top of the conical cone body is a spherical crown body;
the cylinder body is made of thin-wall steel plates with the wall thickness of 1 mm-4 mm, the cylinder body with the outer diameter of a roller sleeve is made of thin-wall steel plates with the wall thickness of 1 mm-4 mm, two layers of circular steel plates with the radial size of 5-10 mm larger than the length of a wear-resistant main body of the column nail are welded at the bottom of the cylinder body, the distance between the two layers of circular steel plates is the machining allowance of the lower end face of the roller sleeve, the bottom circular steel plates are steel plates supported on a casting surface, the circular steel plates above the bottom circular steel plates, namely the circular steel plates at the upper layer of the bottom, are used for preventing the loss of bottom brazing alloy liquid, circular steel plates with the same size are welded at the top after the fixing column nails and the brazing alloy plates are installed, the circular steel plates at the bottom of the lower layer of the top are used for preventing the brazing alloy liquid at the top and molten steel mixture, and the distance between the two layers of circular steel plates at the top is the machining allowance of the upper end face of the roller sleeve;
the manufacturing method of the roller sleeve of the roller press with the roller surface full of the column nails comprises the following steps:
1) A brazing alloy plate with the melting point of 0.2mm to 1mm, which is lower than that of the circumferential surface of the abrasion-resistant main body of the brazing stud, is paved on the inner surface of a cylinder body made of the thin-wall steel plate for installing the fixing stud and preventing the brazing alloy liquid from losing, and is closely attached to the steel plate, and the brazing alloy plate with the melting point of 0.2mm to 1mm is used for solidification feeding of the brazing alloy with the higher melting point of the circumferential surface of the abrasion-resistant main body of the brazing stud;
2) Placing a layer of integral or spliced circular ring-shaped brazing alloy plate with the same size as the circular ring-shaped steel plate and the thickness of 0.2mm to 1mm on the circular ring-shaped steel plate at the upper layer of the bottom;
3) Placing a circle of column nails of the brazing alloy plate, wherein the circular arc end face of the column nail wear-resistant main body is tightly attached to the inner surface of the cylinder, rectangular brazing alloy plates, the thickness of which is 0.2-1 mm, the width of which is the same as the size of the column nails in the bus direction and the length of which is 5-10 mm greater than the length of the column nail wear-resistant main body, between every two layers of column nails, clamping the circular brazing alloy plates, arranging and fixing the column nails and the brazing alloy plates to the tops of the roller sleeves layer by layer according to the method, placing a layer of circular brazing alloy plate, the thickness of which is 0.2-1 mm, on the top of the column nails, tightly attaching the circular ring steel plates at the lower layers of the tops to the circular ring brazing alloy plates, welding the circular ring steel plates at the tops to the cylinder, and finally, completely forming a roller press sleeve wear-resistant layer body, which is filled with the column nails, by the overheat heat capacity and the solidification heat capacity of molten steel to be poured, of the roller surfaces, and the circular ring brazing alloy plates and the rectangular brazing alloy plates, which are 5-10 mm in length of the column nail wear-resistant main body, are used for supplementing welding liquid between the column nails;
4) And placing the wear-resistant layer body of the roller press roller sleeve, which is formed by heating and brazing the full-face stud on the roller surface by utilizing the overheat heat capacity and the solidification heat capacity of molten steel, in a cavity of the casting roller sleeve, and solidifying the cast molten steel to obtain the roller press roller sleeve with the full-face stud on the roller surface.
2. The roll cover of a roll press for full face studs according to claim 1, wherein: the column nails are hard alloy column nails.
3. The roll cover of a roll press for full face studs according to claim 1, wherein: the column nails are steel bonded hard alloy column nails.
4. The roll cover of a roll press for full face studs according to claim 1, wherein: the middle part of the roller surface is a hard alloy roller pin, 30-50% of the roller surface is a hard alloy roller pin, and the other two symmetrical parts are steel bonded hard alloy roller pins, so that the roller surface of the roller sleeve is less and has no saddle-shaped abrasion, and the wear-resisting service life of the roller sleeve and the powder breaking processing efficiency are improved.
5. The roll cover of a roll press for full face studs according to claim 1, wherein: the stud heats the stud and the brazing alloy plate between the stud by utilizing the overheat heat capacity and the solidification heat capacity of molten steel, and melts the brazing alloy, so that the stud and the stud are connected by brazing to form the whole roller sleeve wear-resistant layer.
6. The roll cover of a roll press for full face studs according to claim 1, wherein: the conical body at the tail of the stud is designed to improve the bonding strength between the stud and the matrix, improve the holding force of the matrix on the stud and balance the stress field between the stud and the matrix.
7. The roll cover of a roll press for full face studs according to claim 1, wherein: the column nail is composed of a fan-shaped column body of the head wear-resistant main body and a conical cone body for connecting the cast-in column nail at the tail with the matrix.
8. The roll cover of the roll press for full face studs of claim 4, wherein: the post nail wear-resisting main body is shaped and structured as follows: the shapes of the circular ring-shaped roller sleeve wear-resistant layers are sector column bodies which are equal in height in the direction of the bus and are perpendicular to the bus, and the column nails are closely connected and arranged to form a certain thickness.
9. The roll cover of the roll press for full face studs of claim 4, wherein: the conical body shape structure of the post tail is as follows: the cast-in column nail is connected with a conical cone body of the base body, the conical cone body is in transition connection with a circular angle of a sector column body of the wear-resistant main body, the included angle of the conical cone body is 40-70 degrees, and the top of the conical cone body is a spherical crown body.
10. The roll cover of a roll press for full face studs according to claim 1, wherein: the thin-walled steel plate for installing the fixed column nails and preventing the brazing alloy liquid from losing is made into a cylinder body with the outer diameter of the roller sleeve by using a thin-walled steel plate with the wall thickness of 1 mm-4 mm, two layers of circular steel plates with the radial size being 5-10 mm larger than the length of the abrasion-resistant main body of the column nails are welded at the bottom of the cylinder body, the distance between the two layers of circular steel plates is the machining allowance of the lower end face of the roller sleeve, the bottom circular steel plate is a steel plate supported on a casting surface, the circular steel plate above the bottom circular steel plate, namely the circular steel plate at the upper layer of the bottom, is used for preventing the bottom brazing alloy liquid from losing, the circular steel plate which is symmetrically distributed with the bottom and has the same size is welded at the top after the fixed column nails and the brazing alloy plate are installed, the circular steel plate at the bottom of the lower layer is used for preventing the top brazing alloy liquid and molten steel from being mixed, and the distance between the two layers of circular steel plates at the top is the machining allowance of the upper end face of the roller sleeve.
11. The roll cover of a roll press for full face studs according to claim 1, wherein: the brazing alloy plate with the fixed thickness of 0.2mm to 1mm and the melting point of the brazing alloy lower than that of the brazing alloy used for brazing the circumferential surface of the abrasion-resistant body of the stud is paved on the inner surface of the cylinder body made of the thin-wall steel plate for installing the stud and preventing the brazing alloy liquid from losing and is used for solidifying and feeding the brazing alloy with the higher melting point of the circumferential surface of the abrasion-resistant body of the stud, so that the abrasion-resistant bodies of the stud are less free of brazing defects.
12. The roll cover of a roll press for full face studs according to claim 1, wherein: the roller sleeve is suitable for a roller sleeve of a sand making machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210352277.5A CN114669362B (en) | 2022-04-05 | 2022-04-05 | Roller sleeve of roller press with full-face column nails on roller surface and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210352277.5A CN114669362B (en) | 2022-04-05 | 2022-04-05 | Roller sleeve of roller press with full-face column nails on roller surface and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114669362A CN114669362A (en) | 2022-06-28 |
| CN114669362B true CN114669362B (en) | 2023-09-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210352277.5A Active CN114669362B (en) | 2022-04-05 | 2022-04-05 | Roller sleeve of roller press with full-face column nails on roller surface and manufacturing method thereof |
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| CN (1) | CN114669362B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0699479A1 (en) * | 1994-09-05 | 1996-03-06 | Klöckner-Humboldt-Deutz Aktiengesellschaft | Wear resistant surface coating for rollers of high pressure roller mills for pressure milling of granular material |
| JP2001332254A (en) * | 2000-03-13 | 2001-11-30 | Canon Inc | Manufacturing method for electrode material of lithium secondary battery, electrode structure of the lithium secondary battery and the lithium secondary battery and manufacturing method therefor |
| DE102011054191A1 (en) * | 2011-10-05 | 2013-04-11 | Betek Gmbh & Co. Kg | Crusher roller for roll crusher, has roller body which comprises receptacle at its outer circumference, where tool carrier is received in receptacle in replaceable manner |
| CL2017002270A1 (en) * | 2016-11-04 | 2018-03-09 | Takraf Gmbh | Crushing plant in which the wall of the housing has at least one recess configured for the housing of the displacement device, so that the displacement device is integrated into the wall of the housing within its width, so that it is at less partially arranged in the recess. |
| CN113578456A (en) * | 2021-08-04 | 2021-11-02 | 武汉华材表面科技有限公司 | High-density stud roller sleeve of brazed stud row of cast-in sheath and manufacturing method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008013232A1 (en) * | 2008-03-07 | 2009-09-17 | Pallmann Maschinenfabrik Gmbh & Co Kg | Apparatus for comminuting feed with a rotor |
-
2022
- 2022-04-05 CN CN202210352277.5A patent/CN114669362B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0699479A1 (en) * | 1994-09-05 | 1996-03-06 | Klöckner-Humboldt-Deutz Aktiengesellschaft | Wear resistant surface coating for rollers of high pressure roller mills for pressure milling of granular material |
| JP2001332254A (en) * | 2000-03-13 | 2001-11-30 | Canon Inc | Manufacturing method for electrode material of lithium secondary battery, electrode structure of the lithium secondary battery and the lithium secondary battery and manufacturing method therefor |
| DE102011054191A1 (en) * | 2011-10-05 | 2013-04-11 | Betek Gmbh & Co. Kg | Crusher roller for roll crusher, has roller body which comprises receptacle at its outer circumference, where tool carrier is received in receptacle in replaceable manner |
| CL2017002270A1 (en) * | 2016-11-04 | 2018-03-09 | Takraf Gmbh | Crushing plant in which the wall of the housing has at least one recess configured for the housing of the displacement device, so that the displacement device is integrated into the wall of the housing within its width, so that it is at less partially arranged in the recess. |
| CN113578456A (en) * | 2021-08-04 | 2021-11-02 | 武汉华材表面科技有限公司 | High-density stud roller sleeve of brazed stud row of cast-in sheath and manufacturing method thereof |
Non-Patent Citations (1)
| Title |
|---|
| TRP180-140辊压机生料终粉磨***的优化;高少辉;侯国锋;王烨;回胜科;石国平;;水泥技术(02);第60-63页 * |
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| CN114669362A (en) | 2022-06-28 |
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