A kind of corrosion resistant metal coating of 30CrMnTi steel large-scale spiral bevel gear
Technical field
The present invention relates to the technical fields for improving mechanical part corrosion resistance and wear-resisting property, in particular to a kind of
The corrosion resistant metal coating of 30CrMnTi steel large-scale spiral bevel gear.
Background technique
Corrosion is a kind of slow chemical or electrochemical process, it refers to that metal material causes with the effects of oxygen gas and water
The natural phenomena of itself fail and destruction.Because driving member needs longtime running, the temperature of operation is high, and there was dampness in the air, to transmission
The components such as axis and transmission gear cause to corrode, and bring huge loss to production so as to cause the problem of equipment damage.Therefore,
It needs to spray one layer of etch-proof metal coating on transmission parts to extend driving section to improve the corrosion resistance of transmission parts
The service life of part.However, different spraying process will affect the size of the porosity of metal coating, and porosity is to metal coating
The influence of performance is then most important, and the spraying process of general corrosion-resistant metal coating only sprays transmission parts surface,
And the forging technology of unbonded transmission parts improves, the porosity of anticorrosion with painting erosion resisting coating is big, and then metal coating
Compactness is poor, and the corrosion resistance of metal coating is not strong, cannot reach the requirement of transmission parts corrosion resistance.Therefore, it is necessary to
Develop a kind of corrosion resistant metal coating of Novel transmission component.
Summary of the invention
The purpose of the present invention is to provide a kind of corrosion resistant metal coatings of 30CrMnTi steel large-scale spiral bevel gear, it is intended to
The Corrosion Protection and wear-resisting property of spiral bevel gear are improved, and then increases the service life of spiral bevel gear.
The present invention provides a kind of corrosion resistant metal coating of 30CrMnTi steel large-scale spiral bevel gear, the 20CrMnTi steel
Spiral bevel gear chemical element component and its mass percentage are as follows: C:0.24%-0.32%, Si:0.17%-0.37%, Mn:
0.8%-1.3%, Cr:1.0%-1.3%, Ti:0.04%-0.12%, P < 0.035%, S < 0.035%, the surplus are iron;
The chemical element component and its mass percentage of the corrosion resistant metal coating are as follows: C:0.10-0.12%, Cr:20-30%,
Ni:12.25-15.43%, Al:1.5-3%, Ti:0.1-0.2%, Cu:0.3-0.5%, Mg:0.13-0.15%, Re:0.3-
0.5%, La:0.32-0.38%, Ce:0.2-0.52%, the surplus are iron;The treatment process of the corrosion resistant metal coating
It sequentially includes the following steps:
Step S1: it prepares powder cored filament material: by C, Cr, Ni, Al, Ti, Cu, Mg, Re, La by mixing powder, molding, drawing, obtaining
To powder cored filament material;
Step S2: surface treatment: 30CrMnTi steel large-scale spiral bevel gear is put into the box electricity of RX3 after two-stage quenches
First time tempering is carried out in furnace;
Step S3: spraying process: the 30CrMnTi steel large-scale spiral bevel gear after first time is tempered is immediately by powder core
Line-material coating to gear surface forms corrosion resistant metal coating;
S4: second tempering of step: and then second is carried out to the 30CrMnTi steel large-scale spiral bevel gear after spraying
Secondary tempering.
As a further improvement of the present invention, the technique of the first time tempering in step S2 are as follows: tempering temperature is
500-650 DEG C, 2h is kept the temperature, oil is cooled to room temperature.
As a further improvement of the present invention, the technique of second of tempering of step S4 are as follows: tempering temperature 650-700
DEG C, 1.5h is kept the temperature, air blast is air-cooled to room temperature.
As a further improvement of the present invention, spraying parameter in step S3 are as follows: voltage 28-30V, electric current 160-
240A, spray distance 80-100mm, compressed air pressure 0.4-0.6MPa.
As a further improvement of the present invention, spraying parameter in step S3 are as follows: voltage 30V, electric current 220A, spraying away from
From for 80mm, compressed air pressure 0.4MPa.
As a further improvement of the present invention, the ingredient of corrosion resistant metal coating is by mass percentage are as follows: C:0.11-
0.12%, Cr:25-30%, Ni:14.25-15.43%, Al:2.0-3%, Ti:0.15-0.2%, Cu:0.4-0.5%, Mg:
0.14-0.15%, Re:0.4-0.5%, La:0.35-0.38%, Ce:0.35-0.52%, the surplus are iron.
As a further improvement of the present invention, the thickness of the corrosion resistant metal coating are as follows: 0.3-0.5mm.
Compared with prior art, the invention has the following advantages:
1. the present invention is different from the general spraying for only carrying out anticorrosion with painting erosion metal coating to finished product transmission parts surface
Technique, production heat treatment process when finished product not formed in conjunction with spiral bevel gear improve, the hole of anticorrosion with painting erosion resisting coating
Rate is small, and then the compactness of metal coating is high, and the anti-peel strength of metal coating is big, the corrosion-resistant metal coating obtained from
Corrosion Protection it is high.
2. the process conditions of present invention control applying coating are in high temperature shape in first time tempering rear screw umbrella tooth wheel surface
Upper erosion shield is just sprayed under state, and the particle in corrosion-resistant metal dope layer on the one hand can be made to carry out " re-melting ", so that
Resolidification after uniform particle distribution in corrosion-resistant metal dope layer, can greatly reduce the hole of corrosion-resistant metal dope layer
Rate increases compactness, the uniformity of coating, on the other hand the state that spiral bevel gear is in high temperature carry out spraying can increase it is anti-
Corrode metal coating and spiral bevel gear bond strength, this two aspect carry out collaboration increase metal coating corrosion resistance and
Wear-resisting property.
3. the present invention sprays spiral bevel gear after first time is tempered, after corrosion-resistant metal coating with spiral umbrella
The residence time is long at high temperature for gear, and the element transitions such as Cr, C, Ni, Ce in corrosion-resistant metal coating have arrived spiral bevel gear
In, it is tempered using second, the element being transitioned into spiral bevel gear plays a role, and Ce element refines inside spiral bevel gear
Tissue, internal stress, which is eliminated, repairs quenched crackle, and the content of spiral bevel gear Cr, C, Ce element in forging has also been enlarged
Boundary improves the constituent contents such as spiral bevel gear Cr, C, Ni in a manner of coating, improves the hardness, strong of spiral bevel gear
Degree and toughness.
4. the present invention uses rare earth element ce, materials microstructure performance can obviously improve, improve degree of grain refinement, increase
The compactness of powder cored filament material, and then the hole of coating surface is reduced, high temperature surface, which is sprayed on, after first time is tempered forms coating,
The time of coating layer touch high-temperature substrate is long, and Ce element penetrates into spiral bevel gear, can make spiral bevel gear crystal grain more refinement
It is small, in a jumble, effectively divide original austenite grain, the long large space of second of tempering phase-change organization of limitation reaches thinning microstructure
And make substructure diversification in original austenite grain, to increase the impact flexibility of spiral bevel gear.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with specific embodiment.Obviously, described
Embodiment be only a part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiment of the present invention, ability
Domain those of ordinary skill every other embodiment obtained without creative efforts, belongs to guarantor of the present invention
The range of shield.
The present invention discloses a kind of corrosion resistant metal coating of 30CrMnTi steel large-scale spiral bevel gear, specific embodiments
It is as follows.
Embodiment 1
The present invention provides a kind of corrosion resistant metal coating of 30CrMnTi steel large-scale spiral bevel gear, the 20CrMnTi steel
Spiral bevel gear chemical element component and its mass percentage are as follows: C:0.24%-0.32%, Si:0.17%-0.37%, Mn:
0.8%-1.3%, Cr:1.0%-1.3%, Ti:0.04%-0.12%, P < 0.035%, S < 0.035%, the surplus are iron;
The chemical element component and its mass percentage of the corrosion resistant metal coating are as follows: C:0.10%, Cr:20%, Ni:
12.25%, Al:1.5%, Ti:0.1%, Cu:0.3%, Mg:0.13%, Re:0.3%, La:0.32%, Ce:0.2%, it is described
Surplus is iron;The treatment process of the corrosion resistant metal coating sequentially includes the following steps:
Step S1: it prepares powder cored filament material: by C, Cr, Ni, Al, Ti, Cu, Mg, Re, La by mixing powder, molding, drawing, obtaining
To powder cored filament material;
Step S2: surface treatment: 30CrMnTi steel large-scale spiral bevel gear is put into the box electricity of RX3 after two-stage quenches
It is 500 DEG C that tempering temperature is carried out in furnace, keeps the temperature 2h, and oil is cooled to the first time tempering of room temperature;
Step S3: spraying process: the 30CrMnTi steel large-scale spiral bevel gear after first time is tempered is immediately by powder core
Silk material is voltage 28-30V, electric current 160-240A, spray distance 80-100mm, compressed air pressure 0.4- in parameter
Be sprayed under conditions of 0.6MPa gear surface formed corrosion resistant metal coating, corrosion-resistant finishes with a thickness of 0.3mm;
S4: second tempering of step: and then second is carried out to the 30CrMnTi steel large-scale spiral bevel gear after spraying
Secondary tempering, keeps the temperature 1.5h by 650 DEG C of tempering temperature, and air blast is air-cooled to room temperature.
Embodiment 2
The present invention provides a kind of corrosion resistant metal coating of 30CrMnTi steel large-scale spiral bevel gear, the 20CrMnTi steel
Spiral bevel gear chemical element component and its mass percentage are as follows: C:0.24%-0.32%, Si:0.17%-0.37%, Mn:
0.8%-1.3%, Cr:1.0%-1.3%, Ti:0.04%-0.12%, P < 0.035%, S < 0.035%, the surplus are iron;
The chemical element component and its mass percentage of the corrosion resistant metal coating are as follows: C:0.12%, Cr:30%, Ni:
15.43%, Al:3%, Ti:0.2%, Cu:0.5%, Mg:0.15%, Re:0.5%, La:0.38%, Ce:0.52%, it is described
Surplus is iron;The treatment process of the corrosion resistant metal coating sequentially includes the following steps:
Step S1: it prepares powder cored filament material: by C, Cr, Ni, Al, Ti, Cu, Mg, Re, La by mixing powder, molding, drawing, obtaining
To powder cored filament material;
Step S2: surface treatment: 30CrMnTi steel large-scale spiral bevel gear is put into the box electricity of RX3 after two-stage quenches
It is 650 DEG C that tempering temperature is carried out in furnace, keeps the temperature 2h, and oil is cooled to the first time tempering of room temperature;
Step S3: spraying process: the 30CrMnTi steel large-scale spiral bevel gear after first time is tempered is immediately by powder core
Silk material is voltage 28-30V, electric current 160-240A, spray distance 80-100mm, compressed air pressure 0.4- in parameter
Be sprayed under conditions of 0.6MPa gear surface formed corrosion resistant metal coating, corrosion-resistant finishes with a thickness of 0.5mm;
S4: second tempering of step: and then second is carried out to the 30CrMnTi steel large-scale spiral bevel gear after spraying
Secondary tempering, keeps the temperature 1.5h by 700 DEG C of tempering temperature, and air blast is air-cooled to room temperature.
Embodiment 3
The present invention provides a kind of corrosion resistant metal coating of 30CrMnTi steel large-scale spiral bevel gear, the 20CrMnTi steel
Spiral bevel gear chemical element component and its mass percentage are as follows: C:0.24%-0.32%, Si:0.17%-0.37%, Mn:
0.8%-1.3%, Cr:1.0%-1.3%, Ti:0.04%-0.12%, P < 0.035%, S < 0.035%, the surplus are iron;
The chemical element component and its mass percentage of the corrosion resistant metal coating are as follows: C:0.11%, Cr:25%, Ni:
14.25%, Al:2%, Ti:0.15%, Cu:0.4%, Mg:0.14%, Re:0.4%, La:0.35%, Ce:0.35%, it is described
Surplus is iron;The treatment process of the corrosion resistant metal coating sequentially includes the following steps:
Step S1: it prepares powder cored filament material: by C, Cr, Ni, Al, Ti, Cu, Mg, Re, La by mixing powder, molding, drawing, obtaining
To powder cored filament material;
Step S2: surface treatment: 30CrMnTi steel large-scale spiral bevel gear is put into the box electricity of RX3 after two-stage quenches
It is 600 DEG C that tempering temperature is carried out in furnace, keeps the temperature 2h, and oil is cooled to the first time tempering of room temperature;
Step S3: spraying process: the 30CrMnTi steel large-scale spiral bevel gear after first time is tempered is immediately by powder core
Silk material is voltage 28-30V, electric current 160-240A, spray distance 80-100mm, compressed air pressure 0.4- in parameter
Be sprayed under conditions of 0.6MPa gear surface formed corrosion resistant metal coating, corrosion-resistant finishes with a thickness of 0.4mm;
S4: second tempering of step: and then second is carried out to the 30CrMnTi steel large-scale spiral bevel gear after spraying
Secondary tempering, keeps the temperature 1.5h by 680 DEG C of tempering temperature, and air blast is air-cooled to room temperature.
Choose the spiral bevel gear for preparing as sample according to GB/T9286-1998 progress adhesion property test, by
Salt water resistance test is carried out according to GB1763-1989 standard room temperature salt tolerant water law, carries out salt tolerant according to GB/T1771-1991 standard
Test result is as follows for mist performance: table 1 is the corrosion resistance test result of spiral bevel gear.
The performance indicator of 1 spiral bevel gear of table
Embodiment 1-3's the result shows that, the adhesion property of corrosion-resistant metal coating provided by the invention is good, salt water resistance and resistance to
Salt fog performance is high.
Above to a kind of corrosion resistant metal coating of 30CrMnTi steel large-scale spiral bevel gear provided by the present invention.Herein
In apply specific embodiment principle and implementation of the present invention are described, the explanation of above example is only intended to
It facilitates the understanding of the method and its core concept of the invention.It should be pointed out that for those skilled in the art,
Without departing from the principles of the invention, can be with several improvements and modifications are made to the present invention, these improvement and modification are also fallen
Enter in the protection scope of the claims in the present invention.