CN108544134A - A kind of cement grinding roller roll surface build-up welding repair process - Google Patents
A kind of cement grinding roller roll surface build-up welding repair process Download PDFInfo
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- CN108544134A CN108544134A CN201810840872.7A CN201810840872A CN108544134A CN 108544134 A CN108544134 A CN 108544134A CN 201810840872 A CN201810840872 A CN 201810840872A CN 108544134 A CN108544134 A CN 108544134A
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- powder
- wearing layer
- grinding roller
- welding wire
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/3053—Fe as the principal constituent
- B23K35/306—Fe as the principal constituent with C as next major constituent, e.g. cast iron
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/40—Making wire or rods for soldering or welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P6/00—Restoring or reconditioning objects
- B23P6/002—Repairing turbine components, e.g. moving or stationary blades, rotors
- B23P6/007—Repairing turbine components, e.g. moving or stationary blades, rotors using only additive methods, e.g. build-up welding
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Powder Metallurgy (AREA)
- Crushing And Grinding (AREA)
Abstract
The invention discloses a kind of cement grinding roller roll surface build-up welding repair process, include the following steps：Step 1: screening ferrochrome powder, ferromanganese powder, molybdenum-iron powder, ferro-niobium powder, Al-Mg alloy powder, ferrosilicon powder, ferro-boron powder, screening graphite powder and atomized iron powder；Step 2: weighing above-mentioned raw materials powder according to quality proportioning, and it is sufficiently mixed, wearing layer welding wire medicine core is made；Step 3: selecting mild-carbon steel strip as wearing layer welding wire crust, wearing layer welding wire crust wraps up wearing layer welding wire medicine core and wearing layer welding wire is made；Step 4: welding wear-resistant layer wire bond is connected on grinding roller matrix.A kind of cement grinding roller roll surface build-up welding repair process provided by the invention makes the wear-resistant material of high rigidity be not easy to peel off from grinding roller ontology, to improve the wear-resisting property of milling roller surface, reduces the frequency of maintenance of cement raw material grinding roller wearing layer.
Description
Technical field
The present invention relates to a kind of wearing layer build-up welding repair process technical field, especially a kind of cement grinding roller roll surface heap repair welding
It returns to work skill.
Background technology
Cement is the basic material of building industry, according to the composition of cement can be divided into portland cement, aluminate cement,
Sulphate aluminium cement, fluoroaluminate cement and ferrous aluminate cement etc.；The common raw material of cement has lime stone, granulated blast-furnace
Slag, volcanic ash, flyash and land plaster etc., these raw materials for being used to prepare cement are required for being processed by milling equipment
The powder of certain grain size can realize uniform mixing and fully react.
Since cement industry has the characteristics that yield is huge, cement process equipment is required in high intensity, big load
With work continuously for a long time in the state of high efficiency, the abrasion of the equipment such as grinding grinding roller is very fast, it is therefore desirable to regularly to mill
Roller roll surface carries out build-up wear-resistant material, to repair the roll surface wear-resisting layer of abrasion.Known by long-term production practices, only only
It is the hardness for improving wearing layer, the wear-resisting property of milling roller surface can not be made to be significantly improved, the wear-resistant material of high rigidity
It is easy to peel off from grinding roller ontology, has the cement raw material grinding roller of high-bond resistance to grinding roller ontology it is necessary to provide a kind of thus
Grind layer welding and restoring process.
Invention content
For overcome the deficiencies in the prior art, the present invention provides a kind of cement grinding roller roll surface build-up welding repair process, make height
The wear-resistant material of hardness is not easy to peel off from grinding roller ontology, to improve the wear-resisting property of milling roller surface, reduces cement raw material mill
The frequency of maintenance of roller wearing layer.
The technical solution adopted by the present invention to solve the technical problems is：
A kind of cement grinding roller roll surface build-up welding repair process, includes the following steps：
Step 1: screening ferrochrome powder, ferromanganese powder, molybdenum-iron powder, ferro-niobium powder, Al-Mg alloy powder, ferrosilicon powder, ferro-boron powder, screening graphite
Powder and atomized iron powder；
Step 2: weighing above-mentioned raw materials powder according to quality proportioning, and it is sufficiently mixed, wearing layer welding wire medicine core is made；
Step 3: selecting mild-carbon steel strip as wearing layer welding wire crust, wearing layer welding wire crust wraps up wearing layer welding wire medicine core system
Obtain wearing layer welding wire；
Step 4: welding wear-resistant layer wire bond is connected on grinding roller matrix.
As the further preferred of above-mentioned technical proposal, in step 1, ferrochrome powder, ferromanganese powder, molybdenum-iron powder, ferro-niobium powder,
Grain size after Al-Mg alloy powder, ferrosilicon powder and the choosing of ferro-boron dressing sieve is less than or equal to 180 microns, after graphite powder and atomized iron powder screen
Grain size be less than or equal to 150 microns.
As the further preferred of above-mentioned technical proposal, in step 3, outside wearing layer welding wire medicine core and wearing layer welding wire
The mass ratio of skin be 2 ︰ 1, a diameter of 0.5 centimetre of wearing layer welding wire.
As the further preferred of above-mentioned technical proposal, in step 4, welding machine voltage is 33~36 V, and welding current is
500~550 A, wire feed rate are 50~60 centimetres per minute, and dry extension of electrode is 20~30 millimeters.
As the further preferred of above-mentioned technical proposal, in step 2, the quality proportioning of raw material powder is：12~14 parts
Ferrochrome powder, 3.0~3.5 parts of ferromanganese powders, 1.5~2.0 parts of molybdenum-iron powder, 0.3~0.7 part of ferro-niobium powder, 2~4 parts of Al-Mg alloy powders, 4
~6 parts of ferrosilicon powders, 6~8 parts of ferro-boron powder, 5~7 parts of graphite powders and 25~30 parts of atomized iron powders.
Compared with prior art, the beneficial effects of the invention are as follows：
A kind of cement grinding roller roll surface build-up welding repair process provided by the present invention, the grinding roller base especially suitable for special formulation composition
Body makes the wear-resistant material of high rigidity be not easy to peel off from grinding roller ontology, to improve the wear-resisting property of milling roller surface, reduces cement
The frequency of maintenance of raw material grinding roller wearing layer.
Specific implementation mode
Carry out the technology contents that present invention be described in more detail below in conjunction with specific embodiments.
Specific embodiment 1
A kind of high-bond wearing layer cement raw material grinding roller that the present embodiment is provided, including grinding roller matrix and grinding roller wearing layer,
Grinding roller matrix is that high strength easy welds steel：The mass percentage content of manganese is 1.6%, and the mass percentage content of carbon is 0.07%,
The mass percentage content of silicon is 0.22%, and the mass percentage content of nickel is 1.8%, and the mass percentage content of chromium is 3.8%,
The mass percentage content of niobium is 0.03%, and the mass percentage content of vanadium is 0.05%, and the mass percentage content of titanium is
0.015%, the mass percentage content of sulphur is less than or equal to 0.005%, and the mass percentage content of phosphorus is less than or equal to 0.010%, surplus
For iron；
The yield strength of above-mentioned high strength easy welding steel is more than 500 MPa, and has good weldability, is applied to normal welding
In technique, without being preheated, it is not in crackle to weld after natural cooling, as welding base metal after welding intensity also without bright
It is aobvious to decline.
The built-up welding raw material of grinding roller wearing layer includes the component of following mass fraction：13 parts of ferrochrome powder, 3.3 parts of ferromanganese powders, 1.8
Part molybdenum-iron powder, 0.4 part of ferro-niobium powder, 3 parts of Al-Mg alloy powders, 5 parts of ferrosilicon powders, 6 parts of ferro-boron powder, 7 parts of graphite powders and 28 parts of atomization iron
Powder；Wherein：
The mass percentage content of chromium is 43%~45% in ferrochrome powder, balance iron, remaining impurity mass percentage content is less than etc.
In 0.1%；
The mass percentage content of manganese is 78%~80% in ferromanganese powder, balance iron, remaining impurity mass percentage content is less than etc.
In 0.1%；
The mass percentage content of magnesium is 35%~37% in Al-Mg alloy powder, balance aluminum, remaining impurity mass percentage content is small
In equal to 0.1%；
The mass percentage content of molybdenum is 60%~62% in molybdenum-iron powder, balance iron, remaining impurity mass percentage content is less than etc.
In 0.5%；
The mass percentage content of niobium is 71%~73% in ferro-niobium powder, balance iron, remaining impurity mass percentage content is less than etc.
In 0.5%；
The mass percentage content of silicon is 70%~72% in ferrosilicon powder, balance iron, remaining impurity mass percentage content is less than etc.
In 0.3%；
The mass percentage content of boron is 15%~17% in ferro-boron powder, balance iron, remaining impurity mass percentage content is less than etc.
In 0.3%；
Graphite powder, impurity mass percentage content are less than or equal to 0.1%；
Atomized iron powder, impurity mass percentage content are less than or equal to 0.1%.
The preparation method of above-mentioned high-bond wearing layer cement raw material grinding roller includes the following steps：
Step 1: screening ferrochrome powder, ferromanganese powder, molybdenum-iron powder, ferro-niobium powder, Al-Mg alloy powder, ferrosilicon powder and ferro-boron powder, make above-mentioned
The grain size of raw material powder is less than or equal to 180 microns；Graphite powder and atomized iron powder are screened, the grain size of above-mentioned raw materials powder is made to be less than etc.
In 150 microns；
Step 2: weighing above-mentioned raw materials powder according to quality proportioning, and it is sufficiently mixed, wearing layer welding wire medicine core is made；
Step 3: selecting mild-carbon steel strip as wearing layer welding wire crust, wearing layer welding wire crust wraps up wearing layer welding wire medicine core system
Wearing layer welding wire, the mass ratio of wearing layer welding wire medicine core and wearing layer welding wire crust are 2 ︰ 1, wearing layer welding wire it is a diameter of
0.5 centimetre；
Step 4: welding wear-resistant layer wire bond is connected on grinding roller matrix, welding machine voltage is 33~36 V, and welding current is 500~550
A, wire feed rate are 50~60 centimetres per minute, and dry extension of electrode is 20~30 millimeters.
It is wear-resisting according to the wearing layer for the cement raw material grinding roller that the thickness that above-mentioned preparation method prepares is 0.5 centimetre
Performance is as follows：
By the load of cement raw material grinding roller in high pressure double-roller extrusion mill, pressure between two rollers is 250 MPa, to blast-furnace cinder into
Row squeezes milling operation, and after working continuously 400 hours, wearing layer weight-loss ratio is less than or equal to 8%.
Specific embodiment 2
A kind of high-bond wearing layer cement raw material grinding roller that the present embodiment is provided, including grinding roller matrix and grinding roller wearing layer,
Grinding roller matrix is that high strength easy welds steel：The mass percentage content of manganese is 1.5%, and the mass percentage content of carbon is 0.05%,
The mass percentage content of silicon is 0.10%, and the mass percentage content of nickel is 2.5%, and the mass percentage content of chromium is 4.0%,
The mass percentage content of niobium is 0.02%, and the mass percentage content of vanadium is 0.06%, and the mass percentage content of titanium is
0.010%, the mass percentage content of sulphur is less than or equal to 0.005%, and the mass percentage content of phosphorus is less than or equal to 0.010%, surplus
For iron；
The yield strength of above-mentioned high strength easy welding steel is more than 500 MPa, and has good weldability, is applied to normal welding
In technique, without being preheated, it is not in crackle to weld after natural cooling, as welding base metal after welding intensity also without bright
It is aobvious to decline.
The built-up welding raw material of grinding roller wearing layer includes the component of following mass fraction：12 parts of ferrochrome powder, 3.0 parts of ferromanganese powders, 2.0
Part molybdenum-iron powder, 0.7 part of ferro-niobium powder, 2 parts of Al-Mg alloy powders, 6 parts of ferrosilicon powders, 7 parts of ferro-boron powder, 5 parts of graphite powders and 25 parts of atomization iron
Powder；Wherein：Ferrochrome powder, ferromanganese powder, Al-Mg alloy powder, molybdenum-iron powder, ferro-niobium powder, ferrosilicon powder, ferro-boron powder, graphite powder and atomization iron
The element composition of powder is identical as specific embodiment 1.
The preparation method of above-mentioned high-bond wearing layer cement raw material grinding roller is also identical as specific embodiment 1.
It is wear-resisting according to the wearing layer for the cement raw material grinding roller that the thickness that above-mentioned preparation method prepares is 0.5 centimetre
Performance is as follows：
By the load of cement raw material grinding roller in high pressure double-roller extrusion mill, pressure between two rollers is 250 MPa, to blast-furnace cinder into
Row squeezes milling operation, and after working continuously 400 hours, wearing layer weight-loss ratio is less than or equal to 12%.
Specific embodiment 3
A kind of high-bond wearing layer cement raw material grinding roller that the present embodiment is provided, including grinding roller matrix and grinding roller wearing layer,
Grinding roller matrix is that high strength easy welds steel：The mass percentage content of manganese is 1.8%, and the mass percentage content of carbon is 0.08%,
The mass percentage content of silicon is 0.30%, and the mass percentage content of nickel is 1.0%, and the mass percentage content of chromium is 3.5%,
The mass percentage content of niobium is 0.04%, and the mass percentage content of vanadium is 0.04%, and the mass percentage content of titanium is
0.020%, the mass percentage content of sulphur is less than or equal to 0.005%, and the mass percentage content of phosphorus is less than or equal to 0.010%, surplus
For iron；
The yield strength of above-mentioned high strength easy welding steel is more than 500 MPa, and has good weldability, is applied to normal welding
In technique, without being preheated, it is not in crackle to weld after natural cooling, as welding base metal after welding intensity also without bright
It is aobvious to decline.
The built-up welding raw material of grinding roller wearing layer includes the component of following mass fraction：14 parts of ferrochrome powder, 3.5 parts of ferromanganese powders, 1.5
Part molybdenum-iron powder, 0.3 part of ferro-niobium powder, 4 parts of Al-Mg alloy powders, 4 parts of ferrosilicon powders, 8 parts of ferro-boron powder, 6 parts of graphite powders and 30 parts of atomization iron
Powder；Wherein：Ferrochrome powder, ferromanganese powder, Al-Mg alloy powder, molybdenum-iron powder, ferro-niobium powder, ferrosilicon powder, ferro-boron powder, graphite powder and atomization iron
The element composition of powder is identical as specific embodiment 1.
The preparation method of above-mentioned high-bond wearing layer cement raw material grinding roller is also identical as specific embodiment 1.
It is wear-resisting according to the wearing layer for the cement raw material grinding roller that the thickness that above-mentioned preparation method prepares is 0.5 centimetre
Performance is as follows：
By the load of cement raw material grinding roller in high pressure double-roller extrusion mill, pressure between two rollers is 250 MPa, to blast-furnace cinder into
Row squeezes milling operation, and after working continuously 400 hours, wearing layer weight-loss ratio is less than or equal to 14%.
Above to the present invention better embodiment illustrated, certainly, the present invention can also use with it is above-mentioned
The different form of embodiment, those skilled in the art under the premise of without prejudice to spirit of that invention made by it is equivalent
Transformation or corresponding change, should all belong to the scope of protection of the present invention interior.
Claims (5)
1. a kind of cement grinding roller roll surface build-up welding repair process, which is characterized in that include the following steps：
Step 1: screening ferrochrome powder, ferromanganese powder, molybdenum-iron powder, ferro-niobium powder, Al-Mg alloy powder, ferrosilicon powder, ferro-boron powder, screening graphite
Powder and atomized iron powder；
Step 2: weighing above-mentioned raw materials powder according to quality proportioning, and it is sufficiently mixed, wearing layer welding wire medicine core is made；
Step 3: selecting mild-carbon steel strip as wearing layer welding wire crust, wearing layer welding wire crust wraps up wearing layer welding wire medicine core system
Obtain wearing layer welding wire；
Step 4: welding wear-resistant layer wire bond is connected on grinding roller matrix.
2. a kind of cement grinding roller roll surface build-up welding repair process according to claim 1, it is characterised in that：In step 1,
Grain size after ferrochrome powder, ferromanganese powder, molybdenum-iron powder, ferro-niobium powder, Al-Mg alloy powder, ferrosilicon powder and the choosing of ferro-boron dressing sieve is less than or equal to
180 microns, graphite powder and atomized iron powder screening after grain size be less than or equal to 150 microns.
3. a kind of cement grinding roller roll surface build-up welding repair process according to claim 1, it is characterised in that：In step 3,
The mass ratio of wearing layer welding wire medicine core and wearing layer welding wire crust is 2 ︰ 1, a diameter of 0.5 centimetre of wearing layer welding wire.
4. a kind of cement grinding roller roll surface build-up welding repair process according to claim 1, it is characterised in that：In step 4,
Welding machine voltage is 33~36 V, and welding current is 500~550 A, and wire feed rate is 50~60 centimetres per minute, dry extension of electrode
It is 20~30 millimeters.
5. a kind of cement grinding roller roll surface build-up welding repair process according to claim 1, it is characterised in that：In step 2,
The quality proportioning of raw material powder is：12~14 parts of ferrochrome powder, 3.0~3.5 parts of ferromanganese powders, 1.5~2.0 parts of molybdenum-iron powder, 0.3~
0.7 part of ferro-niobium powder, 2~4 parts of Al-Mg alloy powders, 4~6 parts of ferrosilicon powders, 6~8 parts of ferro-boron powder, 5~7 parts of graphite powders and 25~30 parts
Atomized iron powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810840872.7A CN108544134A (en) | 2018-07-27 | 2018-07-27 | A kind of cement grinding roller roll surface build-up welding repair process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810840872.7A CN108544134A (en) | 2018-07-27 | 2018-07-27 | A kind of cement grinding roller roll surface build-up welding repair process |
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| Publication Number | Publication Date |
|---|---|
| CN108544134A true CN108544134A (en) | 2018-09-18 |
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| CN201810840872.7A Withdrawn CN108544134A (en) | 2018-07-27 | 2018-07-27 | A kind of cement grinding roller roll surface build-up welding repair process |
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|---|---|---|---|---|
| CN101497152A (en) * | 2009-02-26 | 2009-08-05 | 山东大学 | Large-diameter flux-cored wire for revolving body or wear-resistant composite board overlaying welding |
| CN103240547A (en) * | 2013-05-09 | 2013-08-14 | 太原理工大学 | Method for manufacturing TiB<2> ceramic-reinforced wear-resistant surfacing flux-cored welding wire |
| CN103418941A (en) * | 2013-07-30 | 2013-12-04 | 北京工业大学 | Welding wire for repairing worn positions of wear-resistant components and manufacturing method thereof |
| CN105817787A (en) * | 2015-12-24 | 2016-08-03 | 吉林大学 | Abrasion-resistant surfacing anti-fatigue welding material on surface of cement extrusion roller and application |
| CN106141503A (en) * | 2015-04-02 | 2016-11-23 | 中冶建筑研究总院有限公司 | Grinding roller of vertical mill composite manufacturing by hard surfacing gas-shielded flux-cored wire and preparation method thereof |
| CN107186390A (en) * | 2017-05-11 | 2017-09-22 | 安徽飞弧焊业股份有限公司 | A kind of preparation method of grain roll flux-cored welding wire for overlaying welding |
-
2018
- 2018-07-27 CN CN201810840872.7A patent/CN108544134A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101497152A (en) * | 2009-02-26 | 2009-08-05 | 山东大学 | Large-diameter flux-cored wire for revolving body or wear-resistant composite board overlaying welding |
| CN103240547A (en) * | 2013-05-09 | 2013-08-14 | 太原理工大学 | Method for manufacturing TiB<2> ceramic-reinforced wear-resistant surfacing flux-cored welding wire |
| CN103418941A (en) * | 2013-07-30 | 2013-12-04 | 北京工业大学 | Welding wire for repairing worn positions of wear-resistant components and manufacturing method thereof |
| CN106141503A (en) * | 2015-04-02 | 2016-11-23 | 中冶建筑研究总院有限公司 | Grinding roller of vertical mill composite manufacturing by hard surfacing gas-shielded flux-cored wire and preparation method thereof |
| CN105817787A (en) * | 2015-12-24 | 2016-08-03 | 吉林大学 | Abrasion-resistant surfacing anti-fatigue welding material on surface of cement extrusion roller and application |
| CN107186390A (en) * | 2017-05-11 | 2017-09-22 | 安徽飞弧焊业股份有限公司 | A kind of preparation method of grain roll flux-cored welding wire for overlaying welding |
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Application publication date: 20180918 |