CN110170436A - A kind of wear-resistant coating and preparation method thereof for stone roll roll surface - Google Patents
A kind of wear-resistant coating and preparation method thereof for stone roll roll surface Download PDFInfo
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- CN110170436A CN110170436A CN201910521141.0A CN201910521141A CN110170436A CN 110170436 A CN110170436 A CN 110170436A CN 201910521141 A CN201910521141 A CN 201910521141A CN 110170436 A CN110170436 A CN 110170436A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
- B05D5/08—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface
- B05D5/083—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface involving the use of fluoropolymers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/50—Multilayers
- B05D7/52—Two layers
- B05D7/54—No clear coat specified
- B05D7/542—No clear coat specified the two layers being cured or baked together
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2203/00—Other substrates
- B05D2203/30—Other inorganic substrates, e.g. ceramics, silicon
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2451/00—Type of carrier, type of coating (Multilayers)
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2518/00—Other type of polymers
- B05D2518/10—Silicon-containing polymers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2601/00—Inorganic fillers
- B05D2601/20—Inorganic fillers used for non-pigmentation effect
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2601/00—Inorganic fillers
- B05D2601/20—Inorganic fillers used for non-pigmentation effect
- B05D2601/22—Silica
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2601/00—Inorganic fillers
- B05D2601/20—Inorganic fillers used for non-pigmentation effect
- B05D2601/24—Titanium dioxide, e.g. rutile
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2601/00—Inorganic fillers
- B05D2601/20—Inorganic fillers used for non-pigmentation effect
- B05D2601/28—Metals
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2602/00—Organic fillers
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Abstract
The present invention relates to coating technology fields, provide a kind of wear-resistant coating and preparation method thereof for stone roll roll surface, solve the problems, such as that existing stone roll service life is short, dewatered paper surface is coarse, dehydration efficiency is insufficient.The wear-resistant coating includes the first coating for being covered on roll surface and the second coating being arranged in first coating, the first coating includes the raw material of following parts by weight: 65~72 parts of aluminium oxide, 10~15 parts of titanium dioxide, 6~8 parts of yttrium oxide, 3~7 parts of cobalt, 4~6 parts of nickel, 2~4 parts of manganese, 2.4~3.2 parts of glass powder, 1.2~1.8 parts of diamond, 1.5~2 parts of molybdenum disulfide, the second coating includes the raw material of following parts by weight: 48~60 parts of organic siliconresin, 1~3 part of coupling agent, 1.8~2.5 parts of toughener, 3~5 parts of silicone oil, 4~8 parts of polytetrafluoroethylene (PTFE), 2.5~3.5 parts of polyvinyl butyral, 2~7 parts of talcum powder, 0.9~1.6 part of antioxidant, 8~12 parts of filler, trimethylhexamethylenediamine 15 ~20 parts.
Description
Technical field
The present invention relates to coating technology field more particularly to a kind of wear-resistant coatings and its preparation side for stone roll roll surface
Method.
Background technique
Press section is the important watering area of paper machine, is further dehydrated in a manner of pressurizeing to the l Water Paper page after forming.
, by roll surface firmly with two soft rollers, such as common stone roll and rubber roller, which match, forms one group of squeezing for it.Stone roll is usually used to be easy to
It is made with the material of paper removing, uses granite in the past.Granite has surface smooth, and hardness is big, and intensity is high and acidproof, resistance to
Alkali obtains feature, and granite roll surface is smooth, but has many tiny micropores, and permeability is good, therefore l Water Paper is easily peeled off, especially
Be conducive to splicing operation, be widely used in various paper machines.In operation, as revolving speed is too fast or load excessive there may be spindle noses
Overheat makes stone roll surface generate axial direction or circumferential crack, will cause axle center when high-temperature expansion is serious and fall off.With paper machine speed
It improves, the limitation of granite roller is increasingly apparent.Now most of artificial stones being mixed using rubber and quartz sand are replaced
Natural granite, as upper pressure stone roll.The shortcomings that this kind of roller is too strong, the mechanical strength of roller of the l Water Paper to the adhesiveness of roll surface
Difference.Fiber fines, impurity of l Water Paper page frame table etc. are easy to be attached to roller surface, form dirt, this just becomes paper surface
It is coarse, paper quality is influenced, disconnected paper phenomenon occurs when serious, dehydration efficiency is low, but also can corrode roller surface layer, shortens roller
Service life.Therefore how improving the quality of paper, dehydration efficiency and increasing the service life of roller is paper-making industry research
Emphasis direction.
Summary of the invention
Therefore, for the above content, the present invention provides a kind of wear-resistant coating and preparation method thereof for stone roll roll surface, solution
The problem that certainly prior art stone roll service life is short, dewatered paper surface is coarse, dehydration efficiency is insufficient.
In order to achieve the above objectives, the present invention is achieved by the following technical solutions: a kind of for the wear-resisting of stone roll roll surface
Coating, the wear-resistant coating include the first coating for being covered on stone roll roll surface and the second coating being arranged in first coating, institute
First coating is stated using ceramic composite, the raw material including following parts by weight: 65~72 parts of aluminium oxide, titanium dioxide 10~15
Part, 6~8 parts of yttrium oxide, 3~7 parts of cobalt, 4~6 parts of nickel, 2~4 parts of manganese, 2.4~3.2 parts of glass powder, diamond 1.2~
1.8 parts, 1.5~2 parts of molybdenum disulfide, the second coating includes the raw material of following parts by weight: 48~60 parts of organic siliconresin, idol
Join 1~3 part of agent, 1.8~2.5 parts of toughener, 3~5 parts of silicone oil, 4~8 parts of polytetrafluoroethylene (PTFE), polyvinyl butyral 2.5~
3.5 parts, 2~7 parts of talcum powder, 0.9~1.6 part of antioxidant, 8~12 parts of filler, 15~20 parts of trimethylhexamethylenediamine.
A further improvement is that: the first coating includes the raw material of following parts by weight: 68 parts of aluminium oxide, titanium dioxide 12
Part, 7 parts of yttrium oxide, 5 parts of cobalt, 5 parts of nickel, 3 parts of manganese, 2.8 parts of glass powder, 1.5 parts of diamond, 1.8 parts of molybdenum disulfide are described
Second coating includes the raw material of following parts by weight: 53 parts of organic siliconresin, 2 parts of coupling agent, 2 parts of toughener, 4 parts of silicone oil, poly- four
6 parts of vinyl fluoride, 3 parts of polyvinyl butyral, 4 parts of talcum powder, 1.2 parts of antioxidant, 10 parts of filler, tri-methyl hexamethylene two
18 parts of amine.
A further improvement is that: the toughener is one of EP rubbers, ethylene-vinyl acetate copolymer or two
Kind is with any than mixing.
A further improvement is that: the antioxidant is N, bis- (2, the 4- diaminodiphenyl ether) imines of N-, 2- sulfydryl benzo
Any one in thiazole, zinc dialkyl dithiophosphate.
A further improvement is that: the filler is one or both of carbon black, nano silica with any ratio mixing.
The preparation method of wear-resistant coating for stone roll roll surface the following steps are included:
(1) workpiece surface pre-processes:
Stone roll roll surface is cleaned first, degreasing degreasing, be then roughened stone roll roll surface with steel sand, obtains stone roll roll surface
Certain roughness improves coating in the adhesive force of workpiece surface；
(2) first coating is sprayed:
S1: each raw material is weighed by weight and is added in ball grinder, 8~12h of wet ball grinding, wherein aluminium oxide is using equivalent point
The mode being added is criticized, is added before ball mill grinding starts and after 3~4h of ball mill grinding, dry after ball milling, sieving is mixed
Close uniform ceramic composite powder；
S2: doing the pre-heat treatment for entire stone roll, then with plasma spraying equipment that obtained ceramic composite powder is uniform
Ground is sprayed on stone roll roll surface, forms precoated shet；
S3: the stone roll for being coated with precoated shet is sintered, and the first coating is obtained, by the rate of 4~6 DEG C/min
1350~1450 DEG C are warming up to, keeps the temperature 3~5h, then be cooled to room temperature with the rate of 8~12 DEG C/min；
(3) second coating is sprayed:
Weigh by weight organic siliconresin, coupling agent, toughener, silicone oil, polytetrafluoroethylene (PTFE), polyvinyl butyral,
Talcum powder, antioxidant, filler, ultrasonic agitation 50~80min of mixing, are then added trimethylhexamethylenediamine, continue to stir
20~30min is mixed, silicone resin coating is obtained；
Polishing processing is carried out to the first coating surface of above-mentioned steps (2), silicone resin coating is then coated in the
One coating surface solidifies 1~2h at 80~90 DEG C, obtains second coating.
A further improvement is that: the first coating with a thickness of 500~700 μm.
By using preceding solution, the beneficial effects of the present invention are:
Wear-resistant coating prepared by the present invention for stone roll roll surface, surface hardness reach 60HRC or more, prevent with excellent
Viscosity, wearability, coated in the dehydration efficiency for improving l Water Paper page on stone roll roll surface, reduce wet paper surface fiber fines,
Impurity etc. is easy to be attached to roller surface and forms dirt, improves paper quality, and the wearability of stone roll roll surface gets a promotion, extends
The service life of stone roll.
By the reasonable disposition and interaction of each raw material, the wear-resisting shock resistance that undermines of first coating is significantly improved,
The sintering temperature that ceramics can be greatly reduced in metal is wherein added, improves its brittleness；Metal mutually forms ceramic metal as bonding
Belong to, can be in high temperature sintering, and consistency and mechanical performance are improved, than conventional ceramic have higher thermohardening, wearability and
Toughness.Glass powder is added in first coating can reduce sintering temperature, occur liquid phase phenomenon in sintering process, promote each substance
Between it is mutual wetting and densification process, improve the compactness of first coating.The wearability of first coating, shock resistance simultaneously
The mechanical performance of property etc. is also enhanced.The wearability of first coating can be improved in diamond, is further added two
Molybdenum sulfide can reduce the coefficient of friction of coating, play the role of lubrication, reach enhancing first with diamond mutual cooperation
The purpose of coating abrasion performance.
Addition filler can improve the performance of coating, and suitable carbon black, the specific surface of carbon black is added in the present invention in formula
Product is big, improves the abrasion performance of second coating, but frictional property is also promoted therewith；Talcum powder and poly- four is added in second coating
Vinyl fluoride can reduce frictional property.Wherein talcum powder and resin have good binding ability, can adsorb resin well
On, the intensity and hardness of second coating can be improved, and there is good anti-attrition effect.Polytetrafluoroethylene (PTFE) not only has anti-sticking
Property, so that stone roll roll surface is not adhered to any impurity, and its friction factor is small, forms protective film to reduce fretting wear.Further
Selection nano silica as filler, can use the small-size effect of nano particle, promote the cross-linking reaction of resin, mention
The wearability and densification of high coating, while reinforcing the bonding force between two coatings, make to play power when second coating stress
Disperse the effect of transmitting.With the silicon oxygen bond of low-surface-energy in organic siliconresin molecular structure, there is certain hydrophobic ability,
Nano silica is added in second coating, the surface of coating can be enable to further decrease, increases the thick of second coating surface
Rugosity has good antistick characteristic to increase the contact angle of second coating and water.Coupling agent is modified place to filler surface
Reason improves compatibility, wellability, the dispersibility of filler and resin.Polyvinyl butyral can improve the adherency of second coating
Property, flexibility and mobility, are preferably bonded together with first coating.
Specific embodiment
Carry out the embodiment that the present invention will be described in detail below with reference to specific embodiment, how skill is applied to the present invention whereby
Art means solve technical problem, and the realization process for reaching technical effect can fully understand and implement.
Unless otherwise specified, the conventional hand that technological means employed in embodiment is well known to those skilled in the art
Section, used reagent and product are also available commercial.The source of agents useful for same, trade name and it is necessary to list it
Constituent person is indicated on the first occurrence.
Embodiment one
A kind of wear-resistant coating for stone roll roll surface, the wear-resistant coating include be covered on stone roll roll surface first coating and
Second coating in first coating is set, and the first coating uses ceramic composite, the raw material including following parts by weight:
65 parts of aluminium oxide, 10 parts of titanium dioxide, 6 parts of yttrium oxide, 3 parts of cobalt, 4 parts of nickel, 2 parts of manganese, 2.4 parts of glass powder, diamond 1.2
Part, 1.5 parts of molybdenum disulfide, the second coating includes the raw material of following parts by weight: 48 parts of organic siliconresin, silane coupling agent 1
Part, 1.8 parts of EP rubbers, 3 parts of silicone oil, 4 parts of polytetrafluoroethylene (PTFE), 2.5 parts of polyvinyl butyral, 2 parts of talcum powder, N, N- are bis-
0.9 part of (2,4- diaminodiphenyl ether) imines, 8 parts of carbon black, 15 parts of trimethylhexamethylenediamine.
A kind of preparation method of the wear-resistant coating for stone roll roll surface, comprising the following steps:
(1) workpiece surface pre-processes:
Stone roll roll surface is cleaned first, degreasing degreasing, be then roughened stone roll roll surface with steel sand, obtains stone roll roll surface
Certain roughness improves coating in the adhesive force of workpiece surface；
(2) first coating is sprayed:
S1: each raw material is weighed by weight and is added in ball grinder, wet ball grinding 8h, wherein aluminium oxide is added in batches using equivalent
The mode entered is added before ball mill grinding starts and after ball mill grinding 3h, and dry after ball milling, sieving is uniformly mixed
Ceramic composite powder；
S2: doing the pre-heat treatment for entire stone roll, then with plasma spraying equipment that obtained ceramic composite powder is uniform
Ground is sprayed on stone roll roll surface, forms precoated shet；
S3: the stone roll for being coated with precoated shet is sintered, and is warming up to 1350 DEG C by the rate of 4 DEG C/min, keeps the temperature 5h, then
Be cooled to room temperature with the rate of 8 DEG C/min, sintering obtains first coating, first coating with a thickness of 500 μm；
(3) second coating is sprayed:
Organic siliconresin, silane coupling agent, EP rubbers, silicone oil, polytetrafluoroethylene (PTFE), polyvinyl alcohol contracting are weighed by weight
Then front three is added in butyraldehyde, talcum powder, N, N- bis- (2,4- diaminodiphenyl ether) imines, carbon black, ultrasonic agitation mixing 50min
Base hexamethylene diamine continues to stir 20min, obtains silicone resin coating；
Polishing processing is carried out to the first coating surface of above-mentioned steps (2), silicone resin coating is then coated in the
One coating surface solidifies 2h at 80 DEG C, obtains second coating.
Embodiment two
A kind of wear-resistant coating for stone roll roll surface, the wear-resistant coating include be covered on stone roll roll surface first coating and
Second coating in first coating is set, and the first coating uses ceramic composite, the raw material including following parts by weight:
68 parts of aluminium oxide, 12 parts of titanium dioxide, 7 parts of yttrium oxide, 5 parts of cobalt, 5 parts of nickel, 3 parts of manganese, 2.8 parts of glass powder, diamond 1.5
Part, 1.8 parts of molybdenum disulfide, the second coating includes the raw material of following parts by weight: 53 parts of organic siliconresin, silane coupling agent 2
Part, 2 parts of ethylene-vinyl acetate copolymer, 4 parts of silicone oil, 6 parts of polytetrafluoroethylene (PTFE), 3 parts of polyvinyl butyral, talcum powder 4
Part, 1.2 parts of 2-mercaptobenzothiazole, 4 parts of carbon black, 6 parts of nano silica, 18 parts of trimethylhexamethylenediamine.
A kind of preparation method of the wear-resistant coating for stone roll roll surface, comprising the following steps:
(1) workpiece surface pre-processes:
Stone roll roll surface is cleaned first, degreasing degreasing, be then roughened stone roll roll surface with steel sand, obtains stone roll roll surface
Certain roughness improves coating in the adhesive force of workpiece surface；
(2) first coating is sprayed:
S1: each raw material is weighed by weight and is added in ball grinder, wet ball grinding 10h, wherein aluminium oxide uses equivalent in batches
The mode of addition is added before ball mill grinding and after ball mill grinding 3.5h, and dry after ball milling, sieving is uniformly mixed
Ceramic composite powder；
S2: doing the pre-heat treatment for entire stone roll, then with plasma spraying equipment that obtained ceramic composite powder is uniform
Ground is sprayed on stone roll roll surface, forms precoated shet；
S3: the stone roll for being coated with precoated shet is sintered, and is warming up to 1400 DEG C by the rate of 5 DEG C/min, keeps the temperature 4h, then
Be cooled to room temperature with the rate of 10 DEG C/min, obtain first coating after sintering, first coating with a thickness of 600 μm；
(3) second coating is sprayed:
Organic siliconresin, silane coupling agent, ethylene-vinyl acetate copolymer, silicone oil, polytetrafluoroethyl-ne are weighed by weight
Alkene, polyvinyl butyral, talcum powder, 2-mercaptobenzothiazole, carbon black, nano silica, ultrasonic agitation mixing 60min,
Then trimethylhexamethylenediamine is added, continues to stir 25min, obtains silicone resin coating；
Polishing processing is carried out to the first coating surface of above-mentioned steps (2), silicone resin coating is then coated in the
One coating surface solidifies 1.5h at 85 DEG C, obtains second coating.
Embodiment three
A kind of wear-resistant coating for stone roll roll surface, the wear-resistant coating include be covered on stone roll roll surface first coating and
Second coating in first coating is set, and the first coating uses ceramic composite, the raw material including following parts by weight:
72 parts of aluminium oxide, 15 parts of titanium dioxide, 8 parts of yttrium oxide, 7 parts of cobalt, 6 parts of nickel, 4 parts of manganese, 3.2 parts of glass powder, diamond 1.8
Part, 2 parts of molybdenum disulfide, the second coating includes the raw material of following parts by weight: 60 parts of organic siliconresin, 3 parts of silane coupling agent,
1.5 parts of EP rubbers, 1 part of ethylene-vinyl acetate copolymer toughener, 5 parts of silicone oil, 8 parts of polytetrafluoroethylene (PTFE), polyvinyl alcohol contracting
3.5 parts of butyraldehyde, 7 parts of talcum powder, 1.6 parts of zinc dialkyl dithiophosphate, 12 parts of nano silica, tri-methyl hexamethylene two
20 parts of amine.
A kind of preparation method of the wear-resistant coating for stone roll roll surface, comprising the following steps:
(1) workpiece surface pre-processes:
Stone roll roll surface is cleaned first, degreasing degreasing, be then roughened stone roll roll surface with steel sand, obtains stone roll roll surface
Certain roughness improves coating in the adhesive force of workpiece surface；
(2) first coating is sprayed:
S1: each raw material is weighed by weight and is added in ball grinder, wet ball grinding 12h, wherein aluminium oxide uses equivalent in batches
The mode of addition is added before ball mill grinding and after ball mill grinding 4h, and dry after ball milling, sieving obtains uniformly mixed
Ceramic composite powder；
S2: doing the pre-heat treatment for entire stone roll, then with plasma spraying equipment that obtained ceramic composite powder is uniform
Ground is sprayed on stone roll roll surface, forms precoated shet；
S3: the stone roll for being coated with precoated shet is sintered, and is warming up to 1450 DEG C by the rate of 6 DEG C/min, keeps the temperature 3h, then
Be cooled to room temperature with the rate of 12 DEG C/min, sintering obtains first coating, first coating with a thickness of 700 μm；
(3) second coating is sprayed:
Organic siliconresin, silane coupling agent, EP rubbers, ethylene-vinyl acetate copolymer, silicon are weighed by weight
Oil, polytetrafluoroethylene (PTFE), polyvinyl butyral, talcum powder, zinc dialkyl dithiophosphate, nano silica, ultrasonic agitation
80min is mixed, trimethylhexamethylenediamine is then added, continues to stir 30min, obtains silicone resin coating；
Polishing processing is carried out to the first coating surface of above-mentioned steps (2), silicone resin coating is then coated in the
One coating surface solidifies 1h at 90 DEG C, obtains second coating.
The wear-resistant coating that the embodiment of the present invention one to three is prepared is tested for the property, and test result is as shown in table 1.
Wearability is detected according to the measurement rotation rubber grinding wheel method of GB/T 1768-2006 paint and varnish wearability, wearability
Quality with after elastic grinding wheel circulation friction coatings 500 times the mass loss of coating number indicate, mass loss is fewer, coating
Scoring resistance it is better.Adhesive force is tested according to GB/T 9286-1998 paint and varnish cross cut test.Coating it is anti-sticking
Property measurement coating and the contact angle of water indicate.The hardness of coating is using the rockwell hardness measurement method in static load plunging.
1 coating performance test result of table
| Embodiment one | Embodiment two | Embodiment three | |
| Wearability/mg | 1.2 | 0.9 | 1.4 |
| Adhesive force/grade | 1 | 1 | 1 |
| Antistick characteristic | 118.1° | 124.9° | 120.4° |
| Hardness/HRC | 64 | 71 | 68 |
It can be seen that the antistick characteristic, wear-resisting of the wear-resistant coating prepared by the present invention for stone roll roll surface from the data of table 1
Property, adhesive force and hardness show good performance.
The foregoing descriptions are merely the embodiment using this origination techniques content, any those skilled in the art use this wound
Make done modifications and changes, all belong to the scope of the patents of this creation opinion, and is not limited to those disclosed embodiments.
Claims (7)
1. a kind of wear-resistant coating for stone roll roll surface, it is characterised in that: the wear-resistant coating includes being covered on stone roll roll surface
First coating and the second coating being arranged in first coating, the first coating use ceramic composite, including following heavy
Measure the raw material of part: 65~72 parts of aluminium oxide, 10~15 parts of titanium dioxide, 6~8 parts of yttrium oxide, 3~7 parts of cobalt, 4~6 parts of nickel, manganese 2
~4 parts, 2.4~3.2 parts of glass powder, 1.2~1.8 parts of diamond, 1.5~2 parts of molybdenum disulfide, the second coating include
The raw material of following parts by weight: 48~60 parts of organic siliconresin, 1~3 part of coupling agent, 1.8~2.5 parts of toughener, 3~5 parts of silicone oil,
4~8 parts of polytetrafluoroethylene (PTFE), 2~7 parts of talcum powder, 0.9~1.6 part of antioxidant, is filled out 2.5~3.5 parts of polyvinyl butyral
8~12 parts, 15~20 parts of trimethylhexamethylenediamine of material.
2. a kind of wear-resistant coating for stone roll roll surface according to claim 1, it is characterised in that: the first coating packet
Include the raw material of following parts by weight: 68 parts of aluminium oxide, 12 parts of titanium dioxide, 7 parts of yttrium oxide, 5 parts of cobalt, 5 parts of nickel, 3 parts of manganese, glass powder
2.8 parts, 1.5 parts of diamond, 1.8 parts of molybdenum disulfide, the second coating includes the raw material of following parts by weight: organosilicon tree
53 parts of rouge, 2 parts of coupling agent, 2 parts of toughener, 4 parts of silicone oil, 6 parts of polytetrafluoroethylene (PTFE), 3 parts of polyvinyl butyral, 4 parts of talcum powder,
1.2 parts of antioxidant, 10 parts of filler, 18 parts of trimethylhexamethylenediamine.
3. a kind of wear-resistant coating for stone roll roll surface according to claim 1, it is characterised in that: the toughener is second
One or both of third rubber, ethylene-vinyl acetate copolymer are with any than mixing.
4. a kind of wear-resistant coating for stone roll roll surface according to claim 1, it is characterised in that: the antioxidant is
Bis- (2, the 4- diaminodiphenyl ether) imines of N, N-, 2-mercaptobenzothiazole, any one in zinc dialkyl dithiophosphate.
5. a kind of wear-resistant coating for stone roll roll surface according to claim 1, it is characterised in that: the filler is charcoal
One or both of black, nano silica is with any than mixing.
6. a kind of preparation method of the wear-resistant coating for stone roll roll surface described in -5 any claims according to claim 1,
It is characterized by comprising following steps:
(1) workpiece surface pre-processes:
Stone roll roll surface is cleaned first, degreasing degreasing, be then roughened stone roll roll surface with steel sand, obtains stone roll roll surface certain
Roughness, improve coating workpiece surface adhesive force；
(2) first coating is sprayed:
S1: each raw material is weighed by weight and is added in ball grinder, 8~12h of wet ball grinding, wherein aluminium oxide is added in batches using equivalent
The mode entered is added before ball mill grinding starts and after 3~4h of ball mill grinding, and it is equal to obtain mixing for dry after ball milling, sieving
Even ceramic composite powder；
S2: doing the pre-heat treatment for entire stone roll, is then equably sprayed obtained ceramic composite powder with plasma spraying equipment
It is coated in stone roll roll surface, forms precoated shet；
S3: the stone roll for being coated with precoated shet is sintered, and obtains the first coating, is heated up by the rate of 4~6 DEG C/min
To 1350~1450 DEG C, 3~5h is kept the temperature, then be cooled to room temperature with the rate of 8~12 DEG C/min；
(3) second coating is sprayed:
Organic siliconresin, coupling agent, toughener, silicone oil, polytetrafluoroethylene (PTFE), polyvinyl butyral, talcum are weighed by weight
Powder, antioxidant, filler, ultrasonic agitation 50~80min of mixing, are then added trimethylhexamethylenediamine, continue stirring 20
~30min, obtains silicone resin coating；
Polishing processing is carried out to the first coating surface of above-mentioned steps (2), silicone resin coating is then coated in first and is applied
Layer surface solidifies 1~2h at 80~90 DEG C, obtains second coating.
7. a kind of preparation method of wear-resistant coating for stone roll roll surface according to claim 6, it is characterised in that: described
First coating with a thickness of 500~700 μm.
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Application publication date: 20190827 |