CN110983327A - Manufacturing process of novel semi-autogenous grinding lining plate with laser cladding WC wear-resistant coating - Google Patents
Manufacturing process of novel semi-autogenous grinding lining plate with laser cladding WC wear-resistant coating Download PDFInfo
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- CN110983327A CN110983327A CN201911377385.2A CN201911377385A CN110983327A CN 110983327 A CN110983327 A CN 110983327A CN 201911377385 A CN201911377385 A CN 201911377385A CN 110983327 A CN110983327 A CN 110983327A
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- lining plate
- wear
- autogenous grinding
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- grinding lining
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C24/00—Coating starting from inorganic powder
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
- C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
- C23C24/103—Coating with metallic material, i.e. metals or metal alloys, optionally comprising hard particles, e.g. oxides, carbides or nitrides
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/007—Alloys based on nickel or cobalt with a light metal (alkali metal Li, Na, K, Rb, Cs; earth alkali metal Be, Mg, Ca, Sr, Ba, Al Ga, Ge, Ti) or B, Si, Zr, Hf, Sc, Y, lanthanides, actinides, as the next major constituent
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/058—Alloys based on nickel or cobalt based on nickel with chromium without Mo and W
Abstract
The invention discloses a manufacturing process of a novel semi-autogenous grinding lining plate for laser cladding of a WC wear-resistant coating, which specifically comprises the following steps: s1, manufacturing a semi-autogenous grinding lining plate by a casting method, wherein the semi-autogenous grinding lining plate is made of CrMo alloy steel; s2, wearing the lining plate to perform peeling and cleaning treatment; s3, using a transverse flow C02 laser and taking a numerical control machine tool as a workbench to carry out cladding wear-resistant strengthening treatment on the wear-resistant lining plate; s4, carrying out performance detection on the composite coating, and the invention relates to the technical field of manufacturing of semi-autogenous grinding lining plates. The invention relates to a manufacturing process of a novel semi-autogenous grinding lining plate with a laser cladding WC wear-resistant coating, which adopts a laser surface cladding process, wherein a cladding coating structure mainly comprises carbide and a supersaturated solid solution superfine as-cast structure, and spherical carbide jun ceramic has ultrahigh hardness and is uniformly distributed on a bonding phase with better toughness, so that the wear resistance of the semi-autogenous grinding lining plate is improved effectively.
Description
Technical Field
The invention relates to the technical field of manufacturing of semi-autogenous grinding lining plates, in particular to a manufacturing process of a novel semi-autogenous grinding lining plate with a WC (wolfram carbide) wear-resistant coating through laser cladding.
Background
The lining plate is used for protecting the barrel body, so that the barrel body is prevented from being directly impacted and abraded by a grinding body and materials, meanwhile, the movement state of the grinding body can be adjusted by utilizing the lining plates in different forms, so that the grinding effect of the grinding body on the materials is enhanced, the grinding efficiency of a grinding machine is improved, the yield is increased, and the metal consumption is reduced. One of the key operations of the mineral processing flow is ore grinding, the traditional ore grinding flow is verified by production practice for many years and shows the characteristics of long process flow, multiple used equipment quantity and types, large metal consumption, high capital investment and production cost, the flow of a semi-autogenous grinding loop is simple, two-section crushing and screening equipment is simplified, the configuration is simple, the investment is saved, the grinding mill is adopted by more and more mines at home and abroad, a lining plate of the ball mill is a key part for grinding ores by the ball mill, the lining plate is seriously worn by the ores and steel balls when the ball mill works and is also strongly impacted and impacted by the ores, so that the working conditions of the lining plate, particularly the semi-autogenous grinding lining plate, are quite severe, the abrasion consumption is very fast, the lining plate needs to be replaced after the large-scale grinding mill works for 2.5-3 months, the lining plate needs to be replaced once for 10-15 days, the production of the, therefore, the wear resistance and the service life of the lining plate are not only related to the purchasing cost and the blade consumption of the lining plate, but also seriously affect the yield and the production efficiency of mine production.
The improvement of the wear resistance and the service life of the lining plate are always important targets pursued in mine production, and a plurality of companies develop research on the aspect at the early stage, so that no effective way and method exist.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a manufacturing process of a novel semi-autogenous grinding lining plate of a laser cladding WC wear-resistant coating, which prepares a wear-resistant coating when the lining plate is worn so as to solve the problems in the background technology.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: a manufacturing process of a novel semi-autogenous grinding lining plate with a laser cladding WC wear-resistant coating specifically comprises the following steps:
s1, firstly, manufacturing a semi-autogenous grinding lining plate by a casting method, wherein the semi-autogenous grinding lining plate is made of CrMo alloy steel;
s2, performing descaling cleaning treatment on the surface of the lining plate to be processed, and cleaning the lining plate by using alcohol;
s3, using a cross-flow C02 laser, using a numerical control machine tool as a workbench, carrying out cladding wear-resistant strengthening treatment on the surface to be processed of the substrate, wherein the diameter of a light spot is 4-5mm, then directly sending wear-resistant alloy powder to a molten pool by using a gravity powder feeding mode, and carrying out single-pass and lap-joint scanning according to the space between cutter teeth;
and S4, detecting the performance of the composite coating prepared in the step S3.
Preferably, the wear-resistant alloy powder in step S3 is an alloy powder containing a mixture of spherical WC particles and Ni-Fe-Cr-B-Si self-soluble alloy powder, and the chemical components of the alloy powder respectively include, by weight: c: 0.32%, Cr: 3%, Fe: 3%, Si: 3.7% and the balance Ni.
Preferably, the laser power P of the cross-flow C02 laser used in the step S3 is 4000W, the scanning speed V is 300mm/min, the overlapping rate is 50%, and the coating thickness D is 2 mm.
Preferably, the casting method of the semi-autogenous grinding lining plate in the step S1 is one of sand casting, die casting and investment casting.
Preferably, the thickness of the WC cladding layer in the step S3 is 1.5-2.5 mm.
Preferably, the performance test of the prepared composite coating in step S4 includes: wear resistance detection, impact resistance detection and corrosion resistance detection.
According to the invention, a laser surface cladding process is adopted, and a cladding coating structure mainly comprises a carbide and a supersaturated solid solution superfine as-cast structure, wherein the spherical calcium carbide ceramic has ultrahigh hardness and is uniformly distributed on a binding phase with good toughness, so that the spherical calcium carbide ceramic has a barrier effect on abrasion and can effectively improve the abrasion resistance of the semi-autogenous grinding lining plate; the toughness of the bonding phase is good, the strength is high, and the impact resistance of the wear-resistant layer can be effectively improved.
(III) advantageous effects
The invention provides a manufacturing process of a novel semi-autogenous grinding lining plate with a laser cladding WC wear-resistant coating. Compared with the prior art, the method has the following beneficial effects: the manufacturing process of the novel semi-autogenous grinding lining plate with the laser cladding WC wear-resistant coating specifically comprises the following steps: s1, firstly, manufacturing a semi-autogenous grinding lining plate by a casting method, wherein the semi-autogenous grinding lining plate is made of CrMo alloy steel, S2, descaling the surface to be processed of the lining plate, cleaning the surface by using alcohol, S3, using a transverse flow C02 laser, using a numerical control machine tool as a workbench, cladding and strengthening the surface to be processed of the lining plate, wherein the diameter of a light spot is 4-5mm, then directly sending wear-resistant alloy powder into a molten pool by using a gravity powder feeding mode, carrying out single-pass and lap scanning according to the space between cutter teeth, S4, and carrying out performance detection on the composite coating prepared in the step S3, the invention adopts a laser surface cladding process, the coating tissue mainly comprises carbide and supersaturated superfine solid solution as-cast tissue, wherein spherical carbide Jun ceramics have ultrahigh hardness, are uniformly distributed on a bonding phase with better toughness, and play a role in resisting wear, the invention can effectively improve the wear resistance of the semi-autogenous grinding lining plate, the toughness of the bonding phase is good, the strength is high, the impact resistance of the wear-resistant layer can be effectively improved, the wear resistance and corrosion resistance of the semi-autogenous grinding lining plate are improved, and the service life of the semi-autogenous grinding lining plate is prolonged.
Drawings
FIG. 1 is a process flow diagram of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the embodiment of the present invention provides two technical solutions: a manufacturing process of a novel semi-autogenous grinding lining plate with a laser cladding WC wear-resistant coating specifically comprises the following embodiments:
example 1
S1, firstly, manufacturing a semi-autogenous grinding lining plate by a casting method, wherein the semi-autogenous grinding lining plate is made of CrMo alloy steel, and the casting method of the semi-autogenous grinding lining plate is sand casting;
s2, performing descaling cleaning treatment on the surface of the lining plate to be processed, and cleaning the lining plate by using alcohol;
s3, using a cross-flow C02 laser, using a numerical control machine tool as a workbench, cladding and wear-resistant strengthening treatment is carried out on the surface to be processed of the substrate, the diameter of a light spot is 4mm, then using a gravity powder feeding mode to directly feed wear-resistant alloy powder into a molten pool, and carrying out single-pass and lap-joint scanning according to the distance between cutter teeth, wherein the wear-resistant alloy powder is alloy powder mixed by spherical WC particles and Ni-Fe-Cr-B-Si autolytic alloy powder, and the chemical components of the alloy powder respectively comprise the following components in percentage by weight: c: 0.32%, Cr: 3%, Fe: 3%, Si: 3.7 percent and the balance of Ni, the laser power P of a transverse flow C02 laser is 4000W, the scanning speed V is 300mm/min, the lap joint rate is 50 percent, the coating thickness D is 2mm, and the thickness of a WC cladding layer is 1.5 mm;
s4, performing performance detection on the composite coating prepared in the step S3, wherein the performance detection on the prepared composite coating comprises the following steps: wear resistance detection, impact resistance detection and corrosion resistance detection.
Example 2
S1, firstly, manufacturing a semi-autogenous grinding lining plate by a casting method, wherein the semi-autogenous grinding lining plate is made of CrMo alloy steel, and the casting method of the semi-autogenous grinding lining plate is investment casting;
s2, performing descaling cleaning treatment on the surface of the lining plate to be processed, and cleaning the lining plate by using alcohol;
s3, using a cross-flow C02 laser, using a numerical control machine tool as a workbench, cladding and wear-resistant strengthening treatment is carried out on the surface to be processed of the substrate, the diameter of a light spot is 5mm, then using a gravity powder feeding mode to directly feed wear-resistant alloy powder into a molten pool, and carrying out single-pass and lap-joint scanning according to the distance between cutter teeth, wherein the wear-resistant alloy powder is alloy powder mixed by spherical WC particles and Ni-Fe-Cr-B-Si autolytic alloy powder, and the chemical components of the alloy powder respectively comprise the following components in percentage by weight: c: 0.32%, Cr: 3%, Fe: 3%, Si: 3.7 percent and the balance of Ni, the laser power P of a transverse flow C02 laser is 4000W, the scanning speed V is 300mm/min, the lap joint rate is 50 percent, the coating thickness D is 2mm, and the thickness of a WC cladding layer is 2.5 mm;
s4, performing performance detection on the composite coating prepared in the step S3, wherein the performance detection on the prepared composite coating comprises the following steps: wear resistance detection, impact resistance detection and corrosion resistance detection.
Performance detection
A certain semi-autogenous grinding lining plate production enterprise produces two groups of semi-autogenous grinding lining plates by adopting the manufacturing process of the embodiment 1-2 of the invention, selects the semi-autogenous grinding lining plates of the same type from the market as a comparison group, then respectively carries out wear resistance detection, impact resistance detection and corrosion resistance detection on the three groups of semi-autogenous grinding lining plates, and carries out the wear resistance detection, the impact resistance detection and the corrosion resistance detection on the three groups of materials by sequentially passing through wear resistance testing equipment, impact resistance equipment and corrosion resistance detection equipment, and the detection results are shown in table 1.
Table 1 table of performance testing data
As can be seen from table 1, the semi-autogenous grinding lining plate manufactured in example 1 of the present invention has the best rockwell hardness, the highest impact load and the corrosion resistance, so example 1 is the best scheme, while the semi-autogenous grinding lining plate manufactured in example 2 of the present invention has the rockwell hardness, the highest impact load and the corrosion resistance better than those of the control group, therefore, the present invention adopts the laser surface cladding process, the cladding coating structure mainly comprises the carbide and the supersaturated solid solution ultrafine as-cast structure, wherein the spherical carbide jun ceramic has the ultrahigh hardness and is uniformly distributed on the binding phase with the good toughness, which has the effect of hindering the abrasion, effectively improves the wear resistance of the semi-autogenous grinding lining plate, the toughness and the high strength of the binding phase, effectively improves the impact resistance of the wear-resistant layer, improves the wear resistance and the corrosion resistance of the semi-autogenous grinding lining plate, and prolongs the service life, the invention greatly improves the wear resistance of the wear-resistant material of the lining plate, prolongs the service cycle of the cutter ring of the semi-autogenous grinding lining plate, improves the operating efficiency, reduces the production cost, and has the characteristics of no environmental pollution, no radiation, low noise, high yield, low comprehensive cost and the like in the laser cladding process, so that the wear-resistant treatment of the semi-autogenous grinding lining plate by adopting the laser cladding technology can generate obvious economic benefit and social benefit.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A manufacturing process of a novel semi-autogenous grinding lining plate with a laser cladding WC wear-resistant coating is characterized in that: the method specifically comprises the following steps:
s1, firstly, manufacturing a semi-autogenous grinding lining plate by a casting method, wherein the semi-autogenous grinding lining plate is made of CrMo alloy steel;
s2, performing descaling cleaning treatment on the surface of the lining plate to be processed, and cleaning the lining plate by using alcohol;
s3, using a cross-flow C02 laser, using a numerical control machine tool as a workbench, carrying out cladding wear-resistant strengthening treatment on the surface to be processed of the substrate, wherein the diameter of a light spot is 4-5mm, then directly sending wear-resistant alloy powder to a molten pool by using a gravity powder feeding mode, and carrying out single-pass and lap-joint scanning according to the space between cutter teeth;
and S4, detecting the performance of the composite coating prepared in the step S3.
2. The manufacturing process of the novel semi-autogenous grinding lining plate with the laser cladding WC wear-resistant coating as claimed in claim 1, is characterized in that: the wear-resistant alloy powder in the step S3 is an alloy powder mixed by spherical WC particles and Ni-Fe-Cr-B-Si autolyzed alloy powder, and the wear-resistant alloy powder comprises the following chemical components in percentage by weight: c: 0.32%, Cr: 3%, Fe: 3%, Si: 3.7% and the balance Ni.
3. The manufacturing process of the novel semi-autogenous grinding lining plate with the laser cladding WC wear-resistant coating as claimed in claim 1, is characterized in that: the laser power P of the cross-flow C02 laser used in the step S3 is 4000W, the scanning speed V is 300mm/min, the lap joint rate is 50%, and the coating thickness D is 2 mm.
4. The manufacturing process of the novel semi-autogenous grinding lining plate with the laser cladding WC wear-resistant coating as claimed in claim 1, is characterized in that: the casting method of the semi-autogenous grinding lining plate in the step S1 is one of sand casting, die casting or investment casting.
5. The manufacturing process of the novel semi-autogenous grinding lining plate with the laser cladding WC wear-resistant coating as claimed in claim 1, is characterized in that: the thickness of the WC cladding layer in the step S3 is 1.5-2.5 mm.
6. The manufacturing process of the novel semi-autogenous grinding lining plate with the laser cladding WC wear-resistant coating as claimed in claim 1, is characterized in that: the performance detection of the prepared composite coating in the step S4 includes: wear resistance detection, impact resistance detection and corrosion resistance detection.
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| CN201911377385.2A CN110983327A (en) | 2019-12-27 | 2019-12-27 | Manufacturing process of novel semi-autogenous grinding lining plate with laser cladding WC wear-resistant coating |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103737273A (en) * | 2013-12-31 | 2014-04-23 | 武汉团结点金激光科技有限公司 | Manufacturing technology of novel hobbing cutter with laser cladding WC wear-resistant coating |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103737273A (en) * | 2013-12-31 | 2014-04-23 | 武汉团结点金激光科技有限公司 | Manufacturing technology of novel hobbing cutter with laser cladding WC wear-resistant coating |
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Application publication date: 20200410 |