CN106435455A - Preparation method of gradient composite wear resistant coating layer - Google Patents
Preparation method of gradient composite wear resistant coating layer Download PDFInfo
- Publication number
- CN106435455A CN106435455A CN201611015412.8A CN201611015412A CN106435455A CN 106435455 A CN106435455 A CN 106435455A CN 201611015412 A CN201611015412 A CN 201611015412A CN 106435455 A CN106435455 A CN 106435455A
- Authority
- CN
- China
- Prior art keywords
- resistant coating
- composite wear
- plasma spraying
- preparation
- coating layer
- 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.)
- Pending
Links
Classifications
-
- 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
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/06—Metallic material
-
- 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
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/10—Oxides, borides, carbides, nitrides or silicides; Mixtures thereof
Abstract
The invention discloses a preparation method of a gradient composite wear resistant coating layer. The preparation method comprises the following steps: (1) the sand blasting roughening treatment is performed for the surface of a substrate; (2) the surface of the substrate is respectively washed by acetone and ethanol, and is dried at 100-160 DEG C; (3) atmospheric plasma spraying equipment is adopted to perform plasma spraying of a NiCrBSi transition layer on the surface of the substrate; and the thickness of the transition layer is 0.1-0.3 mm; and (4) the atmospheric plasma spraying of WC-Mo2FeB2-Si3N4 mixed powder is performed for the transition layer to obtain a WC-Mo2FeB2-Si3N4 gradient composite wear resistant coating layer; and the thickness of the gradient composite wear resistant coating layer is 0.2-0.6 mm. The composite coating layer can improve the wear resistance of matrix.
Description
Technical field
The present invention relates to field of material technology, more particularly to a kind of WC-Mo2FeB2-Si3N4Graded composite wear-resistant coating
Preparation method.
Background technology
Abrasion is one of three kinds of main causes (abrasion, corrosion and fatigue) of metal parts failure.Economy caused by it
Loss is very huge, the numeral that such as U.S. announces for 1981, and the loss for being caused due to abrasion every year up to 100,000,000,000 is beautiful
Unit.Wherein about 20,000,000,000 dollars of material consumption, equivalent to the 7% of material annual production.As material wear ability is poor, China is big
The Loss of Life of amount fundamental parts generally significantly less than the level of external advanced product, therefore directly and indirectly economic loss
And it is very surprising.
Only with regard to metallurgical mine, agricultural machinery, coal, electric power and the incomplete statistics of five industrial departments of building materials, annual merely due to
Abrasive wear and the spare part that requires supplementation with just reaches 1,000,000 tons of steel, equivalent to 15～2,000,000,000 RMB.And for example mechanical industry is annual
Steel used, there are about half be consume in the production of spare part, and the major part in spare part be as wear-out life is not high and
Failure, such as from about 40% agricultural machinery and implement spare part is consumed due to abrasive wear, and about 30% seamless steel tube for boiler is ground due to corrosion
Loss effect.
In metallurgical mine production, the operating mode of machinery and use environment are very severe, and wear out failure is the master of mechanical failure
Want reason.By taking slurry pump as an example, it is used to remaining CHARACTERISTICS OF TAILINGS SAND mud after the washup that extracts, in mud containing part hardness relatively
Washed ore, grit and larger stone, and wherein also containing corrosive materials such as sulfur, need when transporting mud in addition
Pressure head that will be higher, therefore in pump, the speed of fluid is very high.With larger impulsive force.These working conditions determine Pulp pump
Using when to can bear the abrasion of various ways, have very high mechanical tenacity and intensity again, thus to pump flow passage components
Material propose very high requirement.But the performance of homogenous material be difficult to meet this to have a very high mechanical strength, and
Have the capability of doing sth the requirement of mill, corrosion resistant.
Hot-spraying technique and the generation of composite, are to solve this problem to open a piece of new prospect.For example, will be resistance to
Mill ceramic material is sprayed on impact-resistant metal material, and bi-material is learnt from other's strong points to offset one's weaknesses, and is had complementary advantages, can be met machinery and set
The standby mechanical load for increasingly improving and the rigors to abrasion resistance.
Thermal spraying composite anti-wear coating success it is critical only that wearability, but sprayed on material is had with the property of coating
Very big difference, so, selection can only be carried out according to the existing property of sprayed on material, the wearability as wear-resistant coating needs in a large number
Performance test checking.Wear-resistant coating quality is also affected with coating structure by spraying coating process except relevant with sprayed on material,
This is related to the bond strength of coating and residual thermal stress, high bond strength and the final mesh that low residual thermal stress is hot-spraying technique
's.
Content of the invention
It is an object of the invention to proposing a kind of preparation method of graded composite wear-resistant coating, the composite coating can be carried
The anti-wear performance of high matrix.
For reaching this purpose, the present invention is employed the following technical solutions：
A kind of preparation method of graded composite wear-resistant coating, which includes：
(1) substrate surface is carried out sandblasting roughening treatment；
(2) acetone and washing with alcohol substrate surface are used respectively, and dries at 100-160 DEG C；
(3) air plasma spraying equipment is adopted, plasma spraying NiCrBSi transition zone is carried out to the substrate surface,
The transition region thickness is 0.1-0.3mm；
(4) air plasma spraying WC-Mo is adopted on transition zone2FeB2-Si3N4Mixed-powder, obtains WC-Mo2FeB2-
Si3N4Graded composite wear-resistant coating, the graded composite wear-resistant coating thickness is 0.2-0.6mm.
WC-Mo of the present invention2FeB2-Si3N4Mixed-powder, which is nanoscale, with 10-3:0.5-2:1 weight ratio
Mixing.
The air plasma spraying equipment of the present invention, is the known technology of this area, and the determination of its process conditions can
With according to the state of the art, or limited number of time test is determined, and the present invention is no longer defined with regard to which.
Air plasma spraying is that in all of hot-spraying technique, motility is most strong, and it can produce enough energy
Amount fusing any material.Spraying method can be divided into atmospheric plasma, atmosphere protection plasma, vacuum plasma and the steady plasma of water
Spraying etc..Spraying equipment is mainly made up of spray gun, powder feeder, DC source, control system, heat exchanger and pipe-line system.By
Use powder as coating material in plasma spraying, the quantity of the coating material that can use in plasma spray coating process is several
It is unlimited.Hf electric arc is lighted between anode (nozzle) and negative electrode (electrode), the process gas for flowing therebetween is (generally
Mixture for argon, nitrogen, hydrogen and helium) plume that is ionized as thermal plasma gas, so as to exceed sun surface
6,600 DEG C to 16,600 DEG C of temperature.After coating material is injected into gas plume, material is melted and is fired to target base
Body.
The energy that the electric current co- controlling technique for applying on the process gas for using and electrode is produced.Due to can be to every kind of
Gas and electric current used are accurately adjusted, so coating result can repeat and predict.Meanwhile, material is launched into plume
Place and angle and spray gun can also be controlled to the distance of target, produce appropriate material spraying ginseng so as to high flexible
Number, expands the temperature range of fusing.
The distance of plasma gun and target part, the relative velocity of spray gun and part and part are cooled down (generally by collection
In target matrix the help sprayed of air), typically the spraying temperature of part is controlled at 38 DEG C to 260 DEG C.
Preferably, base material of the present invention is impeller or the housing of Pulp pump.I.e.：
Compared to other bond coatings, the present invention is using NiCrBSi as bond coating, and which serves reduction heat treatment
Temperature, improve the effect that matrix is connected property with working lining, realize good combination.
NiCrBSi of the present invention, between its each composition, ratio does not do specific restriction, as long as each composition reaches effectively
Amount.For example, its content is Cr 14-18wt%, B 3-4.5wt%, Si 3.5-5.5wt%, Ni surplus.
The present invention adopts WC-Mo2FeB2-Si3N4Combination, and arrange between substrate surface and the gradient composite coating
NiCrBSi inter coat so that coating wear resistant corrosion resistant, and strong with adhesion.
The present invention adopts air plasma spraying technique, compared to other hot-spraying techniques, is particularly suitable for the present invention
Slurry pump impeller and the irregular component such as housing, and the technique coordinated with the certain material of the present invention, the coating heavily fortified point for obtaining
Reinforce and lean on, anticorrosive wear-resistant.
The graded composite wear-resistant coating matrix that the present invention is obtained is placed in water sand mixture, carries out rotation wear test,
After 24 hours, weigh, and be compared with weight before abrasion, abrasion loss rate is less than 0.001%, and system of the present invention is described
The standby composite coating for obtaining is wear-resisting and is tightly combined firmly with matrix.
Specific embodiment
Technical scheme is further illustrated below by specific embodiment.
Embodiment 1
A kind of impeller of Pulp pump or housing WC-Mo2FeB2-Si3N4The preparation method of graded composite wear-resistant coating, its bag
Include：
(1) substrate surface is carried out sandblasting roughening treatment；
(2) acetone and washing with alcohol substrate surface are used respectively, and dries at 100-160 DEG C；
(3) air plasma spraying equipment is adopted, plasma spraying NiCrBSi transition zone is carried out to the substrate surface,
The transition region thickness is 0.1mm；
(4) air plasma spraying WC-Mo is adopted on transition zone2FeB2-Si3N4Mixed-powder, ratio is 10:0.5:
1, obtain WC-Mo2FeB2-Si3N4Graded composite wear-resistant coating, the graded composite wear-resistant coating thickness is 0.2mm.
Embodiment 2
A kind of impeller of Pulp pump or housing WC-Mo2FeB2-Si3N4The preparation method of graded composite wear-resistant coating, its bag
Include：
(1) substrate surface is carried out sandblasting roughening treatment；
(2) acetone and washing with alcohol substrate surface are used respectively, and dries at 100-160 DEG C；
(3) air plasma spraying equipment is adopted, plasma spraying NiCrBSi transition zone is carried out to the substrate surface,
The transition region thickness is 0.3mm；
(4) air plasma spraying WC-Mo is adopted on transition zone2FeB2-Si3N4Mixed-powder, the two ratio is 10:
2:1, obtain WC-Mo2FeB2-Si3N4Graded composite wear-resistant coating, the graded composite wear-resistant coating thickness is 0.6mm.
Embodiment 3
A kind of impeller of Pulp pump or housing WC-Mo2FeB2-Si3N4The preparation method of graded composite wear-resistant coating, its bag
Include：
(1) substrate surface is carried out sandblasting roughening treatment；
(2) acetone and washing with alcohol substrate surface are used respectively, and dries at 100-160 DEG C；
(3) air plasma spraying equipment is adopted, plasma spraying NiCrBSi transition zone is carried out to the substrate surface,
The transition region thickness is 0.2mm；
(4) air plasma spraying WC-Mo is adopted on transition zone2FeB2-Si3N4Mixed-powder, ratio is 5:1:1, obtain
To WC-Mo2FeB2-Si3N4Graded composite wear-resistant coating, the graded composite wear-resistant coating thickness is 0.4mm.
The graded composite wear-resistant coating matrix that embodiment 1-3 is obtained is placed in water sand mixture, carries out rotation abrasion examination
Test, after 24 hours, weigh, and be compared with weight before abrasion, abrasion loss rate is less than 0.01%, and embodiment is described
Composite coating that 1-3 is prepared is wear-resisting and is tightly combined firmly with matrix.
Claims (2)
1. a kind of preparation method of graded composite wear-resistant coating, which includes：
(1) substrate surface is carried out sandblasting roughening treatment；
(2) acetone and washing with alcohol substrate surface are used respectively, and dries at 100-160 DEG C；
(3) air plasma spraying equipment is adopted, plasma spraying NiCrBSi transition zone is carried out to the substrate surface, described
Transition region thickness is 0.1-0.3mm；
(4) air plasma spraying WC-Mo is adopted on transition zone2FeB2-Si3N4Mixed-powder, obtains WC-Mo2FeB2-Si3N4
Graded composite wear-resistant coating, the graded composite wear-resistant coating thickness is 0.2-0.6mm；
Described WC-Mo2FeB2-Si3N4Mixed-powder, which is nanoscale, with 10-3:0.5-2:1 weight is than mixing.
2. the preparation method of graded composite wear-resistant coating as claimed in claim 1, it is characterised in that described base material be
The impeller of pump or housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611015412.8A CN106435455A (en) | 2016-11-18 | 2016-11-18 | Preparation method of gradient composite wear resistant coating layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611015412.8A CN106435455A (en) | 2016-11-18 | 2016-11-18 | Preparation method of gradient composite wear resistant coating layer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106435455A true CN106435455A (en) | 2017-02-22 |
Family
ID=58220168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611015412.8A Pending CN106435455A (en) | 2016-11-18 | 2016-11-18 | Preparation method of gradient composite wear resistant coating layer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106435455A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104213067A (en) * | 2014-09-25 | 2014-12-17 | 上海交通大学 | Method for coating high-temperature corrosion and wear resistant coating layer on surface of steel material |
-
2016
- 2016-11-18 CN CN201611015412.8A patent/CN106435455A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104213067A (en) * | 2014-09-25 | 2014-12-17 | 上海交通大学 | Method for coating high-temperature corrosion and wear resistant coating layer on surface of steel material |
Non-Patent Citations (2)
| Title |
|---|
| 张本等: "陶瓷/金属复合耐磨涂层的性能评价", 《武汉理工大学学报》 * |
| 李文虎: "Mo2FeB2金属陶瓷覆层材料组织与性能的研究", 《陶瓷》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102418065B (en) | Composite metal carbide wear-resistant coating and preparation process thereof | |
| CN110699629A (en) | High-entropy amorphous powder with high-temperature erosion resistance and plasma spraying function, coating of high-entropy amorphous powder, preparation method of coating and application of coating | |
| CN106893961A (en) | A kind of supersonic flame spraying method for strengthening turbine blade surface | |
| CN105861974A (en) | Composite coating with impact erosion and cavitation erosion abrasion resistances | |
| CN104213064B (en) | Preparation method of tungsten carbide coating layer sprayed on surface of aluminum base material through explosion | |
| CN108866470A (en) | A kind of preparation method of air plasma spraying alloy-ceramic laminar coating | |
| CN106399894A (en) | Preparation method of WC-NiCrBSi gradient composite wear-resisting coating | |
| CN107201491A (en) | A kind of preparation method of drilling riser sleeve pipe electric arc spraying protective coating | |
| CN106756727A (en) | A kind of robot automation's spraying coating process of grinding roller wear-resistant coating | |
| CN105385978A (en) | Electric arc spraying method | |
| CN106435452A (en) | Preparation method of gradient composite anti-wear coating layer | |
| CN106435456A (en) | Preparation method of gradient composite wear-resistant coating | |
| CN106282900A (en) | A kind of preparation method of graded composite wear-resistant coating | |
| CN106756737A (en) | A kind of preparation method of graded composite wear-resistant coating | |
| CN106435451A (en) | Preparation method of WC-NiCrAl gradient composite wear-resistant coating | |
| CN106435455A (en) | Preparation method of gradient composite wear resistant coating layer | |
| CN106756734A (en) | A kind of preparation method of TiN NiCrAl graded composite wear-resistant coatings | |
| CN106544622A (en) | A kind of preparation method of graded composite wear-resistant coating | |
| CN106435453A (en) | Preparation method of gradient composite abrasion-resistant coating | |
| CN106350760A (en) | Preparation method of gradient composite abrasion-resistant coating | |
| CN106399907A (en) | Preparation method of WC-NiB gradient composite wear-resisting coating | |
| CN106399911A (en) | Preparation method for gradient composite abrasion-resistant coating | |
| CN106498334A (en) | A kind of preparation method of WC NiB graded composite wear-resistant coatings | |
| CN106399909A (en) | Preparation method of gradient composite wear-resisting coating | |
| CN106756735A (en) | A kind of preparation method of graded composite wear-resistant coating |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170222 |