CN113527925A - Wear-resistant gear and production process thereof - Google Patents
Wear-resistant gear and production process thereof Download PDFInfo
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- CN113527925A CN113527925A CN202110931529.5A CN202110931529A CN113527925A CN 113527925 A CN113527925 A CN 113527925A CN 202110931529 A CN202110931529 A CN 202110931529A CN 113527925 A CN113527925 A CN 113527925A
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- resistant coating
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/02—Toothed members; Worms
- F16H55/06—Use of materials; Use of treatments of toothed members or worms to affect their intrinsic material properties
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/02—Toothed members; Worms
- F16H55/17—Toothed wheels
Abstract
The application relates to the technical field of gear surface treatment, and particularly discloses a wear-resistant gear, which comprises the following components in parts by weight: 34-46 parts of aluminum phosphate backing material; the aluminum phosphate backing material is prepared from phosphoric acid, aluminum hydroxide, sulfuric acid and water in a mass ratio of (10-15) to 13 (2-3) to (20-30); 56-73 parts of ceramic powder; 5-10 parts of zirconium oxide powder; 3-7 parts of zinc oxide powder; 5-10 parts of maleated rosin ethylene glycol acrylate; 4-6 parts of other auxiliary agents. By adding the maleic rosin ethylene glycol acrylate, the wear-resistant coating is not easy to crack at low temperature, and the low-temperature wear resistance of the wear-resistant gear is improved. The nano thulium oxide is added, so that the toughness and the wear resistance of the wear-resistant gear are improved. The toughness of the wear-resistant gear is improved by adding the mercapto carboxylic ester.
Description
Technical Field
The application relates to the technical field of gear surface treatment, in particular to a wear-resistant gear and a production process thereof.
Background
Gear refers to a mechanical element on a rim with gears continuously engaged to transmit motion and power. Gears and gear products thereof are important basic parts of mechanical equipment, and the main transmission parts of most mechanical complete equipment are in gear transmission.
However, in practical use of the gear, the teeth of the gear are easily worn during operation, so that the surface of the gear is coated with an anti-wear agent to form an anti-wear coating during production of the gear, so that the surface of the gear is protected, and the service life of the gear is prolonged.
However, although the wear-resistant coating of the wear-resistant gear in the related art has good wear resistance, the toughness of the wear-resistant coating is poor, and the wear-resistant coating of the wear-resistant gear is prone to cracking in the cold working environment in the north, so that the service life of the gear is reduced at low temperature.
Disclosure of Invention
In order to improve the low-temperature toughness of the wear-resistant gear, the application provides the wear-resistant gear and the production process thereof.
The application provides a wear-resisting gear and production technology thereof adopts the following technical scheme:
in a first aspect, the present application provides a wear resistant gear, employing the following technical solution
A wear-resistant gear comprises a gear body and a wear-resistant coating, wherein the wear-resistant coating comprises the following components in parts by weight:
34-46 parts of aluminum phosphate backing material; the aluminum phosphate backing material is prepared from phosphoric acid, aluminum hydroxide, sulfuric acid and water in a mass ratio of (10-15) to 13 (2-3) to (20-30);
56-73 parts of ceramic powder;
5-10 parts of zirconium oxide powder;
3-7 parts of zinc oxide powder;
5-10 parts of maleated rosin ethylene glycol acrylate;
4-6 parts of other auxiliary agents.
Through adopting above-mentioned technical scheme, wear-resistant coating protects the gear body, improves the wearability of gear.
The aluminum phosphate backing material is prepared by reacting aqueous solution of phosphoric acid with aluminum hydroxide and adjusting the pH value with sulfuric acid, and the aluminum phosphate backing material is used as an adhesive, so that the wear-resistant coating has better bonding strength and high-temperature resistance. Ceramic powder, zirconium oxide powder and zinc oxide powder are used as wear-resistant fillers, so that the wear-resistant coating has high temperature resistance, wear resistance and corrosion resistance.
The maleated rosin ethylene glycol acrylate has the characteristics of tricyclic phenanthrene skeleton structure, large molecular skeleton, good molecular thermal stability and difficult decomposition at high temperature. Through the addition of the maleic rosin ethylene glycol acrylate, the toughness and low-temperature toughness of the wear-resistant coating can be improved under the condition of ensuring the wear resistance and high-temperature resistance of the wear-resistant coating, so that the wear-resistant coating is not easy to crack at low temperature, and the service life of the wear-resistant gear at low temperature is prolonged.
Optionally, the wear-resistant coating further comprises 3-5 parts by weight of nano thulium oxide.
By adopting the technical scheme, the wear resistance and toughness of the coating can be improved by adding 3-5 parts of nano thulium oxide. The reason for this may be that, after the wear-resistant coating is formed, the zirconium oxide powder and the zinc oxide powder form a Zr — Zn donor crystal phase having a certain toughness, and thus the wear-resistant coating has a certain toughness. After nanometer thulium oxide is added, the nanometer thulium oxide has a better thermal stability effect, and on the one hand, the nanometer thulium oxide has a structure formed by influencing the wear-resistant coating, so that the nanometer thulium oxide plays a role in strengthening the toughness of the wear-resistant coating. The addition of the nano thulium oxide promotes the formation of Zr-Zn crystal, so that the toughness of the wear-resistant coating is improved, and meanwhile, nano thulium oxide nanoparticles are filled in gaps among zinc oxide powder, zirconium oxide powder and ceramic powder, so that the compactness of the wear-resistant coating is improved, and the wear resistance is further improved.
Optionally, the wear-resistant coating further comprises 8-13 parts by weight of mercaptocarboxylic acid ester.
By adopting the technical scheme, the zinc bis (mercaptocarboxylate) is generated by the reaction of the mercaptocarboxylate and the zinc oxide, and the Zr-Zn crystal supply phase is formed by the zinc bis (mercaptocarboxylate) and the zirconium oxide, so that the toughness of the Zr-Zn crystal supply phase is further improved, and the toughness of the wear-resistant coating is improved.
Optionally, the wear-resistant coating further comprises 6-12 parts by weight of brown corundum powder.
By adopting the technical scheme, the brown corundum powder has high toughness and good wear resistance, so that the wear resistance and toughness of the wear-resistant gear are further improved.
Optionally, the other auxiliary agents are a composition of phosphite ester, hydroxymethyl cellulose, sodium lignin sulfonate and paraffin wax in a mass ratio of 7 (3-5) to (7-10) to (4-6).
By adopting the technical scheme, the composition of phosphite ester, hydroxymethyl cellulose, sodium lignosulfonate and paraffin further improves the adhesion of the coating and also improves the toughness of the coating.
Optionally, the aluminum phosphate primer is prepared by the following method:
s1, preparing raw materials, namely weighing phosphoric acid, aluminum hydroxide, sulfuric acid and water according to the required mass ratio for later use;
s2, reaction: and (3) stirring and mixing the phosphoric acid obtained in the step S1 with water, adding aluminum hydroxide, heating to 100 ℃ and 140 ℃ under the stirring condition, carrying out condensation reflux reaction for 1-2h, and adding sulfuric acid to prepare the aluminum phosphate primer.
According to the technical scheme, water is used as a liquid phase, phosphoric acid and aluminum hydroxide are subjected to neutralization reaction to prepare aluminum phosphate, the pH value is adjusted by sulfuric acid to prepare an aluminum phosphate bottom material, and the aluminum phosphate bottom material can be displaced with the metal surface to form a chemical bond, so that the aluminum phosphate bottom material has high bonding strength and can uniformly adhere ceramic powder, zirconium oxide powder and zinc oxide powder to the surface of the gear.
Optionally, the maleated rosin ethylene glycol acrylate is prepared by the following method:
weighing 10-20 parts of maleated rosin by weight, heating to 135 ℃ of 120-:
s2, adding 7-10 parts by weight of acrylic acid and 0.5-1 part by weight of p-toluenesulfonic acid into the initial reactant, and reacting for 2-4h under the reaction condition of 120-150 ℃ to obtain a final product;
and S3, cooling, and washing with water to obtain the maleated rosin ethylene glycol acrylate.
By adopting the technical scheme, the maleated rosin is esterified by the glycol and then esterified by the acrylic acid, and the reaction is simple and convenient. The benzene methanesulfonic acid is organic acid, and provides acidic reaction conditions for esterification reaction.
In a second aspect, the present application provides a production process of a wear-resistant gear, which adopts the following technical scheme:
a production process of a wear-resistant gear comprises the following steps:
s1, preparing an aluminum phosphate primer, and keeping the temperature of the prepared aluminum phosphate primer at 100-140 ℃;
s2, weighing the aluminum phosphate primer, the ceramic powder, the zirconia powder, the cerium dioxide and the brown corundum powder according to the required parts by weight, and stirring and mixing uniformly at the temperature of 100-;
s3, stirring and mixing zinc oxide powder and mercaptocarboxylic ester uniformly at 80-100 ℃ according to the required weight parts, reacting for 1-2h under the condition of ultrasonic induction to obtain a mixture, adding the mixture into the mixed material obtained in the step S2, heating to 100-120 ℃, adding other auxiliary agents, and reacting for 2-4h at constant temperature to obtain a premix;
s4, dissolving the maleated rosin ethylene glycol acrylate in ethanol according to the required weight part, adding the maleated rosin ethylene glycol acrylate into the premix obtained in the step S3, and stirring and reacting for 1-2h at the temperature of 100-120 ℃ to prepare the wear-resistant coating;
s5, coating the wear-resistant coating obtained in the step S4 on the gear body at the temperature of 100-.
By adopting the technical scheme, the zinc bis (mercaptocarboxylate) is prepared by adopting the ultrasonic-induced catalytic reaction of zinc oxide powder and mercaptocarboxylate, the zinc bis (mercaptocarboxylate) is added into the mixed material, and then other auxiliary agents and maleated rosin ethylene glycol acrylate are added to prepare the wear-resistant coating, and the wear-resistant coating is coated on the gear body to form the wear-resistant coating, so that the wear-resistant gear is prepared in a simple and convenient preparation mode.
In summary, the present application has the following beneficial effects:
1. by adding the maleic rosin ethylene glycol acrylate, the wear-resistant coating is not easy to crack at low temperature, and the low-temperature wear resistance of the wear-resistant gear is improved.
2. The nano thulium oxide is added, so that the toughness and the wear resistance of the wear-resistant gear are improved.
3. The toughness of the wear-resistant gear is improved by adding the mercapto carboxylic ester.
Detailed Description
The present application will be described in further detail with reference to examples.
| Name of raw materials | Species or origin |
| Ceramic powder | 400-600 mesh |
| Zirconium oxide powder | 45-105um |
| Zinc oxide powder | 325 mesh screen |
| Maleine | Jitian chemical brand, model AJ12 |
| Nano thulium oxide | 50nm |
| Mercapto carboxylic acid ester | Isooctyl thioglycolate or mercaptopropionate |
| Brown corundum powder | 500 mesh |
| Phosphite esters | Triphenyl phosphite or diisooctyl monobenzene phosphite |
| Paraffin wax | Japanese Coli brand, Paraffin powder 7125 |
Preparation example
Preparation example 1
Preparation of the aluminum phosphate backing material:
s1, preparing raw materials, namely weighing 10kg of phosphoric acid, 13kg of aluminum hydroxide, 2kg of sulfuric acid and 20kg of water for later use;
s2, reaction: and (3) stirring and mixing the phosphoric acid obtained in the step S1 with water, adding aluminum hydroxide, heating to 100 ℃ under the stirring condition, carrying out condensation reflux reaction for 2 hours, and adding sulfuric acid to prepare the aluminum phosphate substrate with the ph of 5.4.
Preparation example 2
Preparation of the aluminum phosphate backing material:
s1, preparing raw materials, namely weighing 15kg of phosphoric acid, 13kg of aluminum hydroxide, 3kg of sulfuric acid and 30kg of water for later use;
s2, reaction: and (3) stirring and mixing the phosphoric acid obtained in the step S1 with water, adding aluminum hydroxide, heating to 140 ℃ under the stirring condition, carrying out condensation reflux reaction for 1h, and adding sulfuric acid to prepare the aluminum phosphate substrate with the ph of 5.4.
Preparation example 3
Preparation of the aluminum phosphate backing material:
s1, preparing raw materials, namely weighing 13.4kg of phosphoric acid, 13kg of aluminum hydroxide, 2.4kg of sulfuric acid and 27.6kg of water for later use;
s2, reaction: and (3) stirring and mixing the phosphoric acid obtained in the step S1 with water, adding aluminum hydroxide, heating to 120 ℃ under the stirring condition, carrying out condensation reflux reaction for 1.5h, and adding sulfuric acid to prepare the aluminum phosphate base material with the ph of 5.4.
Preparation example 4
Preparation of maleated rosin ethylene glycol acrylate:
s1, weighing 10kg of maleated rosin, heating to 120 ℃, adding 8kg of ethylene glycol and 1kg of p-toluenesulfonic acid, and reacting for 4 hours at constant temperature to obtain an initial reactant:
s2, adding 7kg of acrylic acid and 0.5kg of p-toluenesulfonic acid into the primary reactant, and reacting for 4 hours at the temperature of 120 ℃ to obtain a final product;
and S3, cooling, and washing with water to obtain the maleated rosin ethylene glycol acrylate.
Preparation example 5
Preparation of maleated rosin ethylene glycol acrylate:
s1, weighing 20kg of maleated rosin, heating to 135 ℃, adding 12kg of ethylene glycol and 2kg of p-toluenesulfonic acid, and reacting for 2 hours at constant temperature to obtain an initial reactant:
s2, adding 10kg of acrylic acid and 1kg of p-toluenesulfonic acid into the primary reactant, and reacting for 2h at the temperature of 150 ℃ to obtain a final product;
and S3, cooling, and washing with water to obtain the maleated rosin ethylene glycol acrylate.
Preparation example 6
Preparation of maleated rosin ethylene glycol acrylate:
s1, weighing 14.3kg of maleated rosin, heating to 129 ℃, adding 10.6kg of ethylene glycol and 1.4kg of p-toluenesulfonic acid, and reacting for 3 hours at constant temperature to obtain an initial reactant:
s2, adding 8.2kg of acrylic acid and 0.7kg of p-toluenesulfonic acid into the primary reactant, and reacting for 3 hours at 127 ℃ to obtain a final product;
and S3, cooling, and washing with water to obtain the maleated rosin ethylene glycol acrylate.
Preparation example 7
Preparation of other auxiliary agents:
weighing 7kg of triphenyl phosphite, 3kg of hydroxymethyl cellulose, 7kg of sodium lignin sulfonate and 4kg of paraffin powder.
Preparation example 8
Preparation of other auxiliary agents:
weighing 7kg of diisooctyl phenyl phosphite, 5kg of hydroxymethyl cellulose, 10kg of sodium lignosulfonate and 6kg of paraffin powder.
Preparation example 9
Preparation of other auxiliary agents:
7kg of triphenyl phosphite, 3.9kg of hydroxymethyl cellulose, 8.2kg of sodium lignosulfonate and 5.3kg of paraffin powder are weighed.
Preparation example 10
The difference from preparation example 9 is that triphenyl phosphate is not added.
Examples
Example 1
A wear resistant gear comprising a wear resistant coating and a gear body, the wear resistant coating comprising the following mass of components:
34kg of the aluminum phosphate primer obtained in production example 1;
56kg of ceramic powder;
5kg of zirconia powder;
3kg of zinc oxide powder;
5kg of the maleated rosin ethylene glycol acrylate obtained in preparation example 4;
4kg of the other auxiliary obtained in preparation example 7.
Preparing the wear-resistant gear according to the raw materials of the wear-resistant coating with the mass:
s1, keeping the temperature of the aluminum phosphate backing material at 100 ℃;
s2, stirring and mixing the aluminum phosphate backing material, the ceramic powder and the zirconia powder uniformly at 100 ℃ for 1h to obtain a stirring material;
s3, adding zinc oxide powder into the mixed material obtained in the step S2, adding other auxiliary agents, and reacting for 4 hours at constant temperature to obtain a premix;
s4, dissolving the maleated rosin ethylene glycol acrylate in 10kg of ethanol, adding the maleated rosin ethylene glycol acrylate into the premix obtained in the step S3, and stirring and reacting for 2 hours at 100 ℃ to prepare the wear-resistant coating;
and S5, coating the wear-resistant coating obtained in the step S4 on the gear body at the temperature of 100 ℃, curing for 2 hours at the temperature of 100 ℃, and cooling to obtain the wear-resistant gear.
Example 2
The difference from embodiment 1 is that a wear-resistant gear comprises a wear-resistant coating and a gear body, wherein the wear-resistant coating comprises the following components in mass:
46kg of the aluminum phosphate primer obtained in production example 2;
73kg of ceramic powder;
10kg of zirconia powder;
7kg of zinc oxide powder;
10kg of the maleated rosin ethylene glycol acrylate obtained in preparation example 5;
6kg of the other auxiliary obtained in preparation example 8.
Example 3
The difference from embodiment 1 is that a wear-resistant gear comprises a wear-resistant coating and a gear body, wherein the wear-resistant coating comprises the following components in mass:
41.3kg of the aluminum phosphate primer obtained in production example 3;
62.7kg of ceramic powder;
7.8kg of zirconia powder;
4.9kg of zinc oxide powder;
6.1kg of the maleated rosin ethylene glycol acrylate obtained in preparation example 6;
4.8kg of other auxiliary obtained in preparation example 9.
Example 4
The difference from the embodiment 3 is that the wear-resistant gear is prepared by the following method:
s1, keeping the temperature of the aluminum phosphate backing material at 140 ℃;
s2, stirring and mixing the aluminum phosphate backing material, the ceramic powder and the zirconia powder uniformly at 140 ℃ for 0.5h to obtain a stirring material;
s3, adding zinc oxide powder into the mixed material obtained in the step S2, adding other auxiliary agents, and reacting for 2 hours at constant temperature to obtain a premix;
s4, dissolving the maleated rosin ethylene glycol acrylate in 10kg of ethanol, adding the maleated rosin ethylene glycol acrylate into the premix obtained in the step S3, and stirring and reacting for 1h at 120 ℃ to prepare the wear-resistant coating;
and S5, coating the wear-resistant coating obtained in the step S4 on the gear body at 120 ℃, curing at 120 ℃ for 0.5 hour, and cooling to obtain the wear-resistant gear.
Example 5
The difference from the embodiment 3 is that the wear-resistant gear is prepared by the following method:
s1, keeping the temperature of the aluminum phosphate backing material at 120 ℃;
s2, stirring and mixing the aluminum phosphate backing material, the ceramic powder and the zirconia powder uniformly at 120 ℃ for 0.8h to obtain a stirring material;
s3, adding zinc oxide powder into the mixed material obtained in the step S2, adding other auxiliary agents, and reacting for 3 hours at constant temperature to obtain a premix;
s4, dissolving the maleated rosin ethylene glycol acrylate in 10kg of ethanol, adding the maleated rosin ethylene glycol acrylate into the premix obtained in the step S3, and stirring and reacting for 1.5 hours at the temperature of 110 ℃ to prepare the wear-resistant paint;
and S5, coating the wear-resistant coating obtained in the step S4 on the gear body at the temperature of 110 ℃, curing for 1 hour at the temperature of 110 ℃, and cooling to obtain the wear-resistant gear.
Example 6
The difference from example 5 is that the other auxiliaries are obtained from preparation example 10.
Example 7
The difference from the embodiment 5 is that in the step of S1 in the preparation of the wear-resistant gear, 3kg of nano thulium oxide is added.
Example 8
The difference from the embodiment 5 is that 5kg of nano thulium oxide is also added in the step of S1 in the preparation of the wear-resistant gear.
Example 9
The difference from the embodiment 5 is that 4.5kg of nano thulium oxide is also added in the step of S2 in the preparation of the wear-resistant gear.
Example 10
The difference from example 9 is that the nano-cerium oxide of 50nm is available in equal amount instead of the nano-thulium oxide.
Example 11
The difference from the example 9 is that the nano-lanthanum oxide with 50nm is equally replaced by the nano-thulium oxide.
Example 12
The difference from example 11 is that 8kg of isooctyl thioglycolate was added in the step of S3 in the preparation of the wear resistant gear, and the following modifications were made in the step of S3:
s3, stirring and mixing the zinc oxide powder and isooctyl thioglycolate uniformly at 80 ℃, reacting for 2 hours under the condition of ultrasonic induction to obtain a mixture, adding the mixture into the mixture obtained in the step S2, heating to 110 ℃, adding other auxiliary agents, and reacting for 3 hours at constant temperature to obtain a premix.
Example 13
The difference from example 12 is that 13kg of isooctyl thioglycolate was added in the step of S3 in the preparation of the wear resistant gear, and the following modifications were made in the step of S3:
s3, stirring and mixing the zinc oxide powder and isooctyl thioglycolate uniformly at 100 ℃, reacting for 1h under the condition of ultrasonic induction to obtain a mixture, adding the mixture into the mixture obtained in the step S2, heating to 110 ℃, adding other auxiliary agents, and reacting for 3h at constant temperature to obtain a premix.
Example 14
The difference from example 12 is that 10.9kg of isooctyl thioglycolate was added in the step of S3 in the preparation of the wear resistant gear, and the following modifications were made in the step of S3:
s3, stirring and mixing the zinc oxide powder and isooctyl thioglycolate uniformly at 90 ℃, reacting for 1.5h under the condition of ultrasonic induction to obtain a mixture, adding the mixture into the mixture obtained in the step S2, heating to 110 ℃, adding other auxiliary agents, and reacting for 3h at constant temperature to obtain the premix.
Example 15
The difference from example 14 is that isooctyl thioglycolate is replaced by isooctyl mercaptopropionate in equal amounts.
Example 16
The difference from example 14 is that the conditions for ultrasonic induction are not provided in step S3.
Example 17
The difference from example 14 is that 6kg of brown corundum powder was added in the S2 step of the preparation of the wear-resistant gear.
Example 18
The difference from example 14 is that 12kg of brown corundum powder was added in the S2 step of the preparation of the wear-resistant gear.
Example 19
The difference from example 14 is that 9.2kg of brown corundum powder was added in the step S2 in the preparation of the wear-resistant gear.
Example 20
The difference from example 19 is that white corundum powder is substituted for brown corundum powder in equal amounts.
Comparative example
Comparative example 1
The difference from example 3 is that no maleated rosin ethylene glycol acrylate is added.
Comparative example 2
The difference from example 3 is that the amount of the maleated rosin ethylene glycol acrylate added is 3 kg.
Comparative example 3
The difference from example 3 is that the amount of the maleated rosin ethylene glycol acrylate added is 15 kg.
Comparative example 4
The difference from example 3 is that maleated rosin is substituted in equal amounts for maleated rosin ethylene glycol acrylate.
Comparative example 5
The difference from example 3 is that the rosin is substituted in equal amounts for the maleated rosin ethylene glycol acrylate.
Performance test
When the wear-resistant coating is coated, the coating is carried out at the temperature of 110 ℃, then the coating is cured for 1 hour at the temperature of 110 ℃, and then the wear-resistant coating is formed after cooling. The abrasion resistant coatings obtained in examples 1 to 20 and comparative examples 1 to 5 were tested in the following manner.
And (3) wear resistance test: and (3) performing a sliding abrasion test by using an MMU-10G high-temperature end face friction abrasion tester, wherein the rotating speed of the tester is 200r/min, the load is 200N, and the abrasion time is 90 min. And (3) weighing by using an analytical balance, and representing the wear resistance by using the weight loss of the test piece under the sliding wear condition, wherein the larger the weight loss is, the worse the wear resistance is. Normal temperature abrasion at 20 ℃ and high temperature abrasion at 100 ℃ were respectively performed, and the abrasion difference was calculated by the following equation, and the test results are shown in table 1 below.
Abrasion difference =100 ℃ abrasion loss-20 ℃ abrasion loss
And (3) toughness test: the impact resistance of the wear-resistant coating is tested by referring to GB-T1732-1993 paint film impact resistance testing method, the normal temperature impact resistance strength at 20 ℃ and the low temperature impact resistance strength at-20 ℃ are tested, and the test results are detailed in Table 1.
TABLE 1
| 20 ℃ abrasion loss mg | Abrasion loss mg at 100 ℃ | Difference in abrasion mg | 20 ℃ impact strength cm | -20 ℃ impact strength cm | |
| Example 1 | 5.7 | 8.4 | 2.7 | 60 | 40 |
| Example 2 | 5.8 | 8.3 | 2.5 | 60 | 40 |
| Example 3 | 5.6 | 8.2 | 2.6 | 60 | 40 |
| Example 4 | 5.7 | 8.3 | 2.6 | 60 | 40 |
| Example 5 | 5.8 | 8.4 | 2.6 | 60 | 40 |
| Example 6 | 5.9 | 8.8 | 2.7 | 50 | 30 |
| Example 7 | 5.1 | 7.7 | 2.6 | 60 | 50 |
| Example 8 | 5.2 | 7.9 | 2.7 | 60 | 50 |
| Example 9 | 5.0 | 7.6 | 2.6 | 60 | 50 |
| Example 10 | 6.5 | 9.4 | 2.9 | 50 | 20 |
| Example 11 | 6.2 | 9.2 | 3.0 | 50 | 20 |
| Example 12 | 5.1 | 8.1 | 3.0 | 70 | 60 |
| Example 13 | 5.3 | 8.2 | 2.9 | 70 | 60 |
| Example 14 | 5.1 | 7.9 | 2.8 | 70 | 60 |
| Example 15 | 5.1 | 7.9 | 2.8 | 70 | 60 |
| Example 16 | 5.2 | 8.4 | 3.2 | 70 | 50 |
| Example 17 | 4.7 | 7.3 | 2.6 | 70 | 70 |
| Example 18 | 4.7 | 7.4 | 2.7 | 70 | 70 |
| Example 19 | 4.6 | 7.2 | 2.6 | 70 | 70 |
| Example 20 | 4.1 | 6.7 | 2.6 | 50 | 40 |
| Comparative example 1 | 5.4 | 7.8 | 2.5 | 40 | 10 |
| Comparative example 2 | 5.5 | 8.0 | 2.5 | 50 | 10 |
| Comparative example 3 | 5.8 | 8.7 | 2.8 | 70 | 50 |
| Comparative example 4 | 7.2 | 13.4 | 6.2 | 50 | 10 |
| Comparative example 5 | 7.5 | 12.8 | 5.3 | 50 | 20 |
It can be seen by combining example 3 and comparative examples 1 to 3 with table 1 that the addition of maleated rosin ethylene glycol acrylate can significantly improve the low temperature toughness of the wear-resistant coating under the condition that the changes of the normal temperature wear resistance and the high temperature wear resistance of the wear-resistant coating are small. The addition amount of the maleated rosin ethylene glycol acrylate is less, so that the toughness of the wear-resistant coating is improved a little; the addition amount of the maleated rosin ethylene glycol acrylate is too much, so that the wear resistance of the wear-resistant coating at 100 ℃ is obviously increased.
Combining example 3 and comparative examples 4-5 and combining table 1, it can be seen that by replacing the maleated rosin ethylene glycol acrylate with maleated rosin and rosin, the abrasion resistance of the abrasion resistant coating is significantly reduced.
Combining examples 5 and 6 with table 1, it can be seen that the addition of phosphite can further improve the room temperature toughness and the low temperature toughness of the wear resistant coating.
Combining example 5 and examples 7-9 with table 1, it can be seen that the addition of the nano thulium oxide powder can significantly improve the low temperature toughness of the wear-resistant coating, so that the low temperature toughness is significantly improved without changing the room temperature toughness. Meanwhile, the wear resistance of the wear-resistant coating can be further improved by adding the nano thulium oxide powder.
Combining examples 9 and 10-11 with table 1, it can be seen that the use of cerium oxide and lanthanum oxide in place of thulium oxide in equal amounts results in a wear resistant coating with reduced wear resistance and low temperature toughness.
By combining the examples 9 and 12 to 14 and combining the table 1, it can be seen that the normal temperature toughness of the wear-resistant coating can be obviously improved by the mercaptocarboxylic ester, so that the wear-resistant coating has better toughness at low temperature.
Combining example 14 and example 16 with table 1, it can be seen that the absence of providing conditions induced by ultrasound results in a decrease in the high temperature wear resistance and a decrease in the low temperature toughness of the wear resistant coating.
Combining example 14 with examples 17-19 and table 1, it can be seen that the brown corundum powder results in an improved wear resistance and improved low temperature toughness of the wear resistant coating.
Combining examples 19 and 20 with table 1, it can be seen that the white corundum powder, although improving the wear resistance of the wear resistant coating, significantly reduces the toughness of the wear resistant coating.
The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.
Claims (8)
1. The wear-resistant gear is characterized by comprising a gear body and a wear-resistant coating, wherein the wear-resistant coating comprises the following components in parts by weight:
34-46 parts of aluminum phosphate backing material; the aluminum phosphate backing material is prepared from phosphoric acid, aluminum hydroxide, sulfuric acid and water in a mass ratio of (10-15) to 13 (2-3) to (20-30);
56-73 parts of ceramic powder;
5-10 parts of zirconium oxide powder;
3-7 parts of zinc oxide powder;
5-10 parts of maleated rosin ethylene glycol acrylate;
4-6 parts of other auxiliary agents.
2. A wear resistant gear in accordance with claim 1, wherein: the wear-resistant coating also comprises 3-5 parts by weight of nano thulium oxide.
3. A wear resistant gear in accordance with claim 2, wherein: the wear-resistant coating also comprises 8-13 parts by weight of mercaptocarboxylic ester.
4. A wear resistant gear in accordance with claim 1, wherein: the wear-resistant coating also comprises 6-12 parts of brown corundum powder by weight.
5. A wear resistant gear in accordance with claim 1, wherein: the other auxiliary agents are a composition of phosphite ester, hydroxymethyl cellulose, sodium lignin sulfonate and paraffin according to the mass ratio of 7 (3-5) to (7-10) to (4-6).
6. A wear resistant gear in accordance with claim 1, wherein: the aluminum phosphate backing material is prepared by the following method:
s1, preparing raw materials, namely weighing phosphoric acid, aluminum hydroxide, sulfuric acid and water according to the required mass ratio for later use;
s2, reaction: and (3) stirring and mixing the phosphoric acid obtained in the step S1 with water, adding aluminum hydroxide, heating to 100 ℃ and 140 ℃ under the stirring condition, carrying out condensation reflux reaction for 1-2h, and adding sulfuric acid to prepare the aluminum phosphate primer.
7. A wear resistant gear in accordance with claim 1, wherein: the maleated rosin ethylene glycol acrylate is prepared by the following method:
s1, weighing 10-20 parts of maleated rosin by weight, heating to 135 ℃ of 120-:
s2, adding 7-10 parts by weight of acrylic acid and 0.5-1 part by weight of p-toluenesulfonic acid into the initial reactant, and reacting for 2-4h under the reaction condition of 120-150 ℃ to obtain a final product;
and S3, cooling, and washing with water to obtain the maleated rosin ethylene glycol acrylate.
8. A process for producing a wear-resistant gear according to any one of claims 1 to 7, comprising the steps of:
s1, preparing an aluminum phosphate primer, and keeping the temperature of the prepared aluminum phosphate primer at 100-140 ℃;
s2, weighing the aluminum phosphate primer, the ceramic powder, the zirconia powder, the cerium dioxide and the brown corundum powder according to the required parts by weight, and stirring and mixing uniformly at the temperature of 100-;
s3, stirring and mixing zinc oxide powder and mercaptocarboxylic ester uniformly at 80-100 ℃ according to the required weight parts, reacting for 1-2h under the condition of ultrasonic induction to obtain a mixture, adding the mixture into the mixed material obtained in the step S2, heating to 100-120 ℃, adding other auxiliary agents, and reacting for 2-4h at constant temperature to obtain a premix;
s4, dissolving the maleated rosin ethylene glycol acrylate in ethanol according to the required weight part, adding the maleated rosin ethylene glycol acrylate into the premix obtained in the step S3, and stirring and reacting for 1-2h at the temperature of 100-120 ℃ to prepare the wear-resistant coating;
s5, coating the wear-resistant coating obtained in the step S4 on the gear body at the temperature of 100-.
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Denomination of invention: A wear-resistant gear and its production process Effective date of registration: 20230711 Granted publication date: 20221125 Pledgee: Taizhou Yuhuan sub branch of Zhejiang Tailong Commercial Bank Co.,Ltd. Pledgor: Taizhou Geling Machinery Co.,Ltd. Registration number: Y2023980048033 |
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