CN114875354B - High-strength seamless deformed steel and processing technology thereof - Google Patents
High-strength seamless deformed steel and processing technology thereof Download PDFInfo
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- C23C8/36—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases using ionised gases, e.g. ionitriding
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- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
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- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
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- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
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- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
- C23C14/0641—Nitrides
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- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/34—Sputtering
- C23C14/35—Sputtering by application of a magnetic field, e.g. magnetron sputtering
- C23C14/352—Sputtering by application of a magnetic field, e.g. magnetron sputtering using more than one target
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- 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
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/02—Pretreatment of the material to be coated
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Abstract
The application discloses a high-strength seamless deformed steel and a processing technology thereof, wherein the scheme 316 austenitic stainless steel is used as a deformed steel matrix for processing, and the deformed steel comprises the following specific components: calculated by mass fraction, C0.08%, si 1%, mn 2%, P0.35%, S0.03%, ni 10-14%, cr 16-18.5%, mo 2-3% and the balance Fe; the deformed steel has high strength and mechanical property. The scheme is used for nitriding and co-cementation on the surface of the deformed steel, the magnetron sputtering composite film layer is reasonable in overall process design and simple to operate, the prepared deformed steel has excellent surface wear resistance, and is high in strength and surface hardness, and can be widely applied to the technical fields of various building construction, equipment machining and the like, and high practicality is achieved.
Description
Technical Field
The application relates to the technical field of deformed steel, in particular to high-strength seamless deformed steel and a processing technology thereof.
Background
The deformed steel is a short for complex and deformed section steel, belongs to one type of section steel, and is different from the simple section steel in terms of terms. According to different processes, the method can be divided into hot rolling deformed steel, cold drawing (cold drawing) deformed steel, cold bending deformed steel, welding deformed steel and the like. The deformed steel is usually referred to as hot rolled deformed steel. The hot-rolled deformed steel is a hot-rolled steel that is distinguished from square steel, round steel, flat steel, and common shapes.
Along with the wider application of the deformed steel, the research and development of the production process of the deformed steel by the existing enterprises are deeper and deeper, and the performance requirements are higher and higher, while the surface hardness and the wear resistance of the deformed steel produced by the prior art obviously cannot meet the requirements of people.
Based on the situation, the application discloses a high-strength seamless deformed steel and a processing technology thereof, so as to solve the technical problem.
Disclosure of Invention
The application aims to provide high-strength seamless deformed steel and a processing technology thereof, so as to solve the problems in the background technology.
In order to solve the technical problems, the application provides the following technical scheme:
a processing technology of high-strength seamless deformed steel comprises the following steps:
(1) Placing the deformed steel into an acetone solution for ultrasonic cleaning, sequentially adopting absolute ethyl alcohol and deionized water for ultrasonic cleaning, and carrying out vacuum drying; shot blasting is carried out on the surface of the deformed steel;
(2) Taking the deformed steel subjected to shot blasting treatment, carrying out ion nitriding on the surface of the deformed steel, wherein nitriding gas is mixed gas of nitrogen and hydrogen, and nitriding for 4-5 hours at 520-530 ℃ to form a nitriding layer;
co-cementation treatment is carried out on the surface of the nitriding layer in an ammonia gas environment, sponge titanium is used for catalytic cementation, the co-cementation gas is mixed gas of ethanol and carbon disulfide, the co-cementation is carried out for 3-4 hours at the temperature of 530-540 ℃ to form a co-cementation layer, deionized water is used for cleaning, and drying is carried out to obtain pretreated deformed steel;
(3) Taking pretreated deformed steel, transferring the deformed steel into vacuum, bombarding and cleaning for 20-25 min by argon, introducing nitrogen, taking a chromium target as a sputtering source, and sputtering a chromium nitride layer on the surface of the co-permeation layer for 10-20 min; fixing a mask plate on the surface of the pretreated deformed steel, and continuously sputtering a chromium nitride layer on the surface of the pretreated deformed steel fixed with the mask plate for 20-30 min;
and then sputtering a chromium aluminum nitride layer on the surface of the chromium nitride layer by taking a chromium target and aluminum palladium as sputtering sources, wherein the sputtering time is 1-1.5 h, removing a mask after the sputtering is finished, placing the pretreated deformed steel into an acetone solution for ultrasonic cleaning, cleaning by sequentially adopting absolute ethyl alcohol and deionized water, and carrying out vacuum drying to obtain a finished product.
In the more optimized scheme, in the step (1), the technological parameters of shot blasting are as follows: the spraying pressure is 110-120 MPa, the spraying target distance is 20-30 mm, the moving speed of the nozzle is 400-450 mm/min, the shot blasting is 304 stainless steel shot with the diameter of 0.5mm, and the spraying time is 30-40 min.
In the more optimized scheme, in the step (2), nitriding process parameters are as follows: the cathode voltage is 600-700V, the nitrogen flow is 80-100 ml/min, the air pressure in the furnace is 500Pa, and the volume ratio of the nitrogen to the hydrogen is 1:4.
in the more optimized scheme, in the step (2), the co-permeation process parameters are as follows: the ammonia flow is 2L/min, and the volume ratio of ethanol to carbon disulfide is 4:1, a step of; the flow rate of the co-permeation gas is 0.2L/min.
In the optimized scheme, in the step (3), an external magnetic field is introduced when the chromium nitride layer and the chromium aluminum nitride layer are sputtered, the direction of the external magnetic field is perpendicular to the pretreated deformed steel, and the intensity of the external magnetic field is 30-50 mT.
In the more optimized scheme, in the step (3), the pattern of the mask plate is formed by periodically arranging a plurality of hollow regular hexagons, the side length of each hollow regular hexagon is 20-30 mu m, the hollow regular hexagons are separated by spacing bars on the mask plate, and the width of each spacing bar is 10-15 mu m.
In the more optimized scheme, in the step (3), the technological parameters of the chromium nitride layer are as follows: the flow rate of nitrogen is 6-8 sccm, the flow rate of argon is 15-20 sccm, the power of a chromium target is 100W, and the pressure of a cavity is 0.5Pa.
In the more optimized scheme, in the step (3), the technological parameters of the chromium aluminum nitride layer are as follows: the flow rate of nitrogen is 6-8 sccm, the flow rate of argon is 15-20 sccm, the power of a chromium target is 250W, the power of aluminum palladium is 200-250W, and the pressure of a cavity is 0.5Pa.
The composition of the deformed steel is as follows: calculated by mass fraction, 0.08% of C, 1% of Si, 2% of Mn, 0.35% of P, 0.03% of S, 10-14% of Ni, 16-18.5% of Cr, 2-3% of Mo and the balance of Fe.
And (3) according to an optimized scheme, the high-strength seamless deformed steel is prepared by the processing technology of the high-strength seamless deformed steel.
Compared with the prior art, the application has the following beneficial effects:
the application discloses a high-strength seamless deformed steel and a processing technology thereof, wherein the scheme 316 austenitic stainless steel is used as a deformed steel matrix for processing, and the deformed steel comprises the following specific components: calculated by mass fraction, C0.08%, si 1%, mn 2%, P0.35%, S0.03%, ni 10-14%, cr 16-18.5%, mo 2-3% and the balance Fe; the deformed steel has high strength and mechanical property.
During processing, firstly, the deformed steel is placed in an acetone solution for ultrasonic cleaning, then, absolute ethyl alcohol and deionized water are used for cleaning to remove oil stains on the surface of the deformed steel, and then, shot blasting is carried out on the deformed steel, wherein the purpose of the shot blasting is as follows: the subsequent steps can carry out ion nitriding and ion co-cementation treatment, after the surface shot blasting treatment of the deformed steel, the co-cementation layer is more continuous and compact during ion co-cementation, the thickness of the co-cementation layer is deeper, the quality of the co-cementation layer is higher, and the bonding performance of the subsequent co-cementation layer, the sputtering layer and the deformed steel is relatively more excellent.
After shot blasting treatment, ion nitriding is firstly carried out on the surface of the deformed steel, and the volume ratio of nitrogen to hydrogen is defined as 1:4", the nitriding treatment is performed on the surface of the deformed steel, and the reason is that: after nitriding treatment, ferromagnetism of the surface of the deformed steel can be enhanced, and when the ferromagnetism is matched with a subsequent externally-applied magnetic field, the magnetron sputtering effect can be improved, and a film formed by sputtering is smoother and denser; meanwhile, after the surface nitriding treatment of the deformed steel, the surface hardness and wear resistance of the deformed steel can be improved.
After surface nitriding treatment, ion co-permeation is carried out on the surface of the nitriding layer by adopting a scheme, titanium sponge is used for promoting permeation, and the co-permeation gas is defined as ethanol and carbon disulfide, and the volume ratio of the ethanol to the carbon disulfide is 4:1", wherein carbon elements provided by ethanol and carbon disulfide can promote nitrogen diffusion, and the introduction of sulfur elements can improve the wear resistance of the surface of the deformed steel; therefore, after ion co-permeation, the surface hardness and the permeation layer depth are greatly improved, and the wear resistance and the corrosion resistance of the deformed steel are further improved.
Here, it is to be explained that: according to the scheme, nitriding and ion co-cementation are firstly carried out, so that on one hand, the surface hardness of the deformed steel is improved, and on the other hand, the nitriding layer and the co-cementation layer can be used as a composite transition layer, so that the subsequent processing of the surface pattern design and the corrosion-resistant sputtering film layer of the deformed steel is facilitated.
On the basis of the scheme, firstly, a chromium nitride layer is carried out on the surface of the deformed steel, the sputtering time is controlled to be 10-20 min, then a mask is fixed on the surface of the deformed steel, the chromium nitride layer is continuously sputtered, then a chromium target and aluminum palladium are used as sputtering sources, the chromium aluminum nitride layer is sputtered on the surface of the chromium nitride layer, the sputtering time is 1-1.5 h, a plurality of regular hexagon patterns which are periodically arranged are formed on the surface of the deformed steel, grooves are formed among the regular hexagon patterns, the grooves are caused by the existence of spacing bars of the mask, and after the spacing bars are removed, the chromium nitride layer and the chromium aluminum nitride layer are sputtered in the hollow regular hexagon patterns of the mask; the mask spacing bars block sputtering, a groove is formed after the mask is removed, and the bottom of the groove is a first sputtered chromium nitride layer; in order to ensure the corrosion resistance of the surface of the deformed steel as a whole, the chromium nitride layer is divided into two times for sputtering due to the existence of the mask; meanwhile, the pattern arrangement of the surface of the deformed steel is also used for improving the surface wear resistance and reducing the surface wear.
The application discloses a high-strength seamless deformed steel and a processing technology thereof, which are reasonable in technological design and simple to operate, and the prepared deformed steel has excellent surface wear resistance, is high in strength and surface hardness, can be widely applied to the technical fields of various building constructions, equipment processing and the like, and has high practicability.
Detailed Description
The following description of the technical solutions in the embodiments of the present application will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
In this embodiment, the deformed steel is 316 austenitic stainless steel, and the specific composition is: calculated by mass fraction, 0.08% of C, 1% of Si, 2% of Mn, 0.35% of P, 0.03% of S, 10-14% of Ni, 16-18.5% of Cr, 2-3% of Mo and the balance of Fe.
The pattern of the mask plate is formed by periodically arranging a plurality of hollow regular hexagons, the side length of each hollow regular hexagon is 25 mu m, the hollow regular hexagons are separated by spacing bars on the mask plate, and the width of each spacing bar is 10 mu m.
Example 1:
a processing technology of high-strength seamless deformed steel comprises the following steps:
(1) Placing the deformed steel into an acetone solution for ultrasonic cleaning, sequentially adopting absolute ethyl alcohol and deionized water for ultrasonic cleaning, and carrying out vacuum drying; shot blasting is carried out on the surface of the deformed steel; the technological parameters of shot blasting are as follows: the spraying pressure is 110MPa, the spraying target distance is 20mm, the moving speed of the nozzle is 400mm/min, the shot blasting is 304 stainless steel shot with the diameter of 0.5mm, and the spraying time is 30min.
(2) Taking deformed steel subjected to shot blasting treatment, carrying out ion nitriding on the surface of the deformed steel, wherein nitriding gas is mixed gas of nitrogen and hydrogen, and nitriding for 5 hours at 520 ℃ to form a nitriding layer; the nitriding process parameters are as follows: the cathode voltage is 600V, the nitrogen flow is 80ml/min, the air pressure in the furnace is 500Pa, and the volume ratio of the nitrogen to the hydrogen is 1:4.
co-cementation treatment is carried out on the surface of the nitriding layer in an ammonia gas environment, sponge titanium is used for catalytic cementation, the co-cementation gas is mixed gas of ethanol and carbon disulfide, the co-cementation is carried out for 4 hours at 530 ℃ to form a co-cementation layer, deionized water is used for cleaning, and drying is carried out to obtain pretreated deformed steel; the co-permeation process parameters are as follows: the ammonia flow is 2L/min, and the volume ratio of ethanol to carbon disulfide is 4:1, a step of; the flow rate of the co-permeation gas is 0.2L/min.
(3) Taking pretreated deformed steel, transferring the deformed steel into vacuum, bombarding and cleaning for 20min by argon, introducing nitrogen, taking a chromium target as a sputtering source, and sputtering a chromium nitride layer on the surface of the co-permeation layer for 10min; fixing a mask plate on the surface of the pretreated deformed steel, and continuously sputtering a chromium nitride layer on the surface of the pretreated deformed steel fixed with the mask plate for 30min; the technological parameters of the chromium nitride layer are as follows: the nitrogen flow is 8sccm, the argon flow is 15sccm, the chromium target power is 100W, and the cavity pressure is 0.5Pa.
Then sputtering a chromium aluminum nitride layer on the surface of the chromium nitride layer by taking a chromium target and aluminum palladium as sputtering sources, wherein the sputtering time is 1h, and the technological parameters of the chromium aluminum nitride layer are as follows: the nitrogen flow is 8sccm, the argon flow is 20sccm, the chromium target power is 250W, the aluminum palladium power is 200W, and the cavity pressure is 0.5Pa.
And removing the mask after sputtering, placing the pretreated deformed steel in an acetone solution for ultrasonic cleaning, cleaning by adopting absolute ethyl alcohol and deionized water in sequence, and carrying out vacuum drying to obtain a finished product.
Example 2:
a processing technology of high-strength seamless deformed steel comprises the following steps:
(1) Placing the deformed steel into an acetone solution for ultrasonic cleaning, sequentially adopting absolute ethyl alcohol and deionized water for ultrasonic cleaning, and carrying out vacuum drying; shot blasting is carried out on the surface of the deformed steel; the technological parameters of shot blasting are as follows: the spraying pressure is 115MPa, the spraying target distance is 20mm, the moving speed of the nozzle is 400mm/min, the shot blasting is 304 stainless steel shot with the diameter of 0.5mm, and the spraying time is 35min.
(2) Taking deformed steel subjected to shot blasting treatment, carrying out ion nitriding on the surface of the deformed steel, wherein nitriding gas is mixed gas of nitrogen and hydrogen, and nitriding for 4.5 hours at 525 ℃ to form a nitriding layer; the nitriding process parameters are as follows: the cathode voltage is 600V, the nitrogen flow is 90ml/min, the air pressure in the furnace is 500Pa, and the volume ratio of the nitrogen to the hydrogen is 1:4.
co-cementation treatment is carried out on the surface of the nitriding layer in an ammonia gas environment, sponge titanium is used for catalytic cementation, the co-cementation gas is mixed gas of ethanol and carbon disulfide, the co-cementation is carried out for 3.5 hours at the temperature of 535 ℃ to form a co-cementation layer, deionized water is used for cleaning, and drying is carried out to obtain pretreated deformed steel; the co-permeation process parameters are as follows: the ammonia flow is 2L/min, and the volume ratio of ethanol to carbon disulfide is 4:1, a step of; the flow rate of the co-permeation gas is 0.2L/min.
(3) Taking pretreated deformed steel, transferring the deformed steel into vacuum, bombarding and cleaning for 25min by argon, introducing nitrogen, taking a chromium target as a sputtering source, and sputtering a chromium nitride layer on the surface of the co-permeation layer for 15min; fixing a mask plate on the surface of the pretreated deformed steel, and continuously sputtering a chromium nitride layer on the surface of the pretreated deformed steel fixed with the mask plate for 25min; the technological parameters of the chromium nitride layer are as follows: the nitrogen flow is 8sccm, the argon flow is 15sccm, the chromium target power is 100W, and the cavity pressure is 0.5Pa.
Then sputtering a chromium aluminum nitride layer on the surface of the chromium nitride layer by taking a chromium target and aluminum palladium as sputtering sources, wherein the sputtering time is 1.2h, and the technological parameters of the chromium aluminum nitride layer are as follows: the nitrogen flow is 8sccm, the argon flow is 20sccm, the chromium target power is 250W, the aluminum palladium power is 250W, and the cavity pressure is 0.5Pa.
And removing the mask after sputtering, placing the pretreated deformed steel in an acetone solution for ultrasonic cleaning, cleaning by adopting absolute ethyl alcohol and deionized water in sequence, and carrying out vacuum drying to obtain a finished product.
Example 3:
a processing technology of high-strength seamless deformed steel comprises the following steps:
(1) Placing the deformed steel into an acetone solution for ultrasonic cleaning, sequentially adopting absolute ethyl alcohol and deionized water for ultrasonic cleaning, and carrying out vacuum drying; shot blasting is carried out on the surface of the deformed steel; the technological parameters of shot blasting are as follows: the spraying pressure is 120MPa, the spraying target distance is 20mm, the moving speed of the nozzle is 400mm/min, the shot blasting is 304 stainless steel shot with the diameter of 0.5mm, and the spraying time is 40min.
(2) Taking deformed steel subjected to shot blasting treatment, carrying out ion nitriding on the surface of the deformed steel, wherein nitriding gas is mixed gas of nitrogen and hydrogen, and nitriding for 4 hours at 530 ℃ to form a nitriding layer; the nitriding process parameters are as follows: the cathode voltage is 600V, the nitrogen flow is 100ml/min, the air pressure in the furnace is 500Pa, and the volume ratio of the nitrogen to the hydrogen is 1:4.
co-cementation treatment is carried out on the surface of the nitriding layer in an ammonia gas environment, sponge titanium is used for catalytic cementation, the co-cementation gas is mixed gas of ethanol and carbon disulfide, the co-cementation is carried out for 3 hours at 540 ℃, a co-cementation layer is formed, deionized water is used for cleaning, and drying is carried out, so that the pretreated deformed steel is obtained; the co-permeation process parameters are as follows: the ammonia flow is 2L/min, and the volume ratio of ethanol to carbon disulfide is 4:1, a step of; the flow rate of the co-permeation gas is 0.2L/min.
(3) Taking pretreated deformed steel, transferring the deformed steel into vacuum, bombarding and cleaning for 25min by argon, introducing nitrogen, taking a chromium target as a sputtering source, and sputtering a chromium nitride layer on the surface of the co-permeation layer for 20min; fixing a mask plate on the surface of the pretreated deformed steel, and continuously sputtering a chromium nitride layer on the surface of the pretreated deformed steel fixed with the mask plate for 20min; the technological parameters of the chromium nitride layer are as follows: the nitrogen flow is 8sccm, the argon flow is 15sccm, the chromium target power is 100W, and the cavity pressure is 0.5Pa.
Then sputtering a chromium aluminum nitride layer on the surface of the chromium nitride layer by taking a chromium target and aluminum palladium as sputtering sources, wherein the sputtering time is 1.5h, and the technological parameters of the chromium aluminum nitride layer are as follows: the nitrogen flow is 8sccm, the argon flow is 20sccm, the chromium target power is 250W, the aluminum palladium power is 250W, and the cavity pressure is 0.5Pa.
And removing the mask after sputtering, placing the pretreated deformed steel in an acetone solution for ultrasonic cleaning, cleaning by adopting absolute ethyl alcohol and deionized water in sequence, and carrying out vacuum drying to obtain a finished product.
Example 4: example 4 was modified on the basis of example 3, in which example 4 an externally applied magnetic field was introduced, the externally applied magnetic field having a strength of 30mT.
A processing technology of high-strength seamless deformed steel comprises the following steps:
(1) Placing the deformed steel into an acetone solution for ultrasonic cleaning, sequentially adopting absolute ethyl alcohol and deionized water for ultrasonic cleaning, and carrying out vacuum drying; shot blasting is carried out on the surface of the deformed steel; the technological parameters of shot blasting are as follows: the spraying pressure is 120MPa, the spraying target distance is 20mm, the moving speed of the nozzle is 400mm/min, the shot blasting is 304 stainless steel shot with the diameter of 0.5mm, and the spraying time is 40min.
(2) Taking deformed steel subjected to shot blasting treatment, carrying out ion nitriding on the surface of the deformed steel, wherein nitriding gas is mixed gas of nitrogen and hydrogen, and nitriding for 4 hours at 530 ℃ to form a nitriding layer; the nitriding process parameters are as follows: the cathode voltage is 600V, the nitrogen flow is 100ml/min, the air pressure in the furnace is 500Pa, and the volume ratio of the nitrogen to the hydrogen is 1:4.
co-cementation treatment is carried out on the surface of the nitriding layer in an ammonia gas environment, sponge titanium is used for catalytic cementation, the co-cementation gas is mixed gas of ethanol and carbon disulfide, the co-cementation is carried out for 3 hours at 540 ℃, a co-cementation layer is formed, deionized water is used for cleaning, and drying is carried out, so that the pretreated deformed steel is obtained; the co-permeation process parameters are as follows: the ammonia flow is 2L/min, and the volume ratio of ethanol to carbon disulfide is 4:1, a step of; the flow rate of the co-permeation gas is 0.2L/min.
(3) Taking pretreated deformed steel, transferring the deformed steel into vacuum, bombarding and cleaning for 25min by argon, introducing nitrogen, taking a chromium target as a sputtering source, and sputtering a chromium nitride layer on the surface of the co-permeation layer for 20min; fixing a mask plate on the surface of the pretreated deformed steel, and continuously sputtering a chromium nitride layer on the surface of the pretreated deformed steel fixed with the mask plate for 20min; the technological parameters of the chromium nitride layer are as follows: the nitrogen flow is 8sccm, the argon flow is 15sccm, the chromium target power is 100W, and the cavity pressure is 0.5Pa.
Then sputtering a chromium aluminum nitride layer on the surface of the chromium nitride layer by taking a chromium target and aluminum palladium as sputtering sources, wherein the sputtering time is 1.5h, and the technological parameters of the chromium aluminum nitride layer are as follows: the nitrogen flow is 8sccm, the argon flow is 20sccm, the chromium target power is 250W, the aluminum palladium power is 250W, and the cavity pressure is 0.5Pa.
When the chromium nitride layer and the chromium nitride aluminum layer are sputtered, an external magnetic field is introduced, the direction of the external magnetic field is vertical to the pretreated deformed steel, and the intensity of the external magnetic field is 30mT.
And removing the mask after sputtering, placing the pretreated deformed steel in an acetone solution for ultrasonic cleaning, cleaning by adopting absolute ethyl alcohol and deionized water in sequence, and carrying out vacuum drying to obtain a finished product.
Example 5: example 5 was modified on the basis of example 3, in which example 5 an externally applied magnetic field was introduced, the intensity of the externally applied magnetic field being 50mT.
A processing technology of high-strength seamless deformed steel comprises the following steps:
(1) Placing the deformed steel into an acetone solution for ultrasonic cleaning, sequentially adopting absolute ethyl alcohol and deionized water for ultrasonic cleaning, and carrying out vacuum drying; shot blasting is carried out on the surface of the deformed steel; the technological parameters of shot blasting are as follows: the spraying pressure is 120MPa, the spraying target distance is 20mm, the moving speed of the nozzle is 400mm/min, the shot blasting is 304 stainless steel shot with the diameter of 0.5mm, and the spraying time is 40min.
(2) Taking deformed steel subjected to shot blasting treatment, carrying out ion nitriding on the surface of the deformed steel, wherein nitriding gas is mixed gas of nitrogen and hydrogen, and nitriding for 4 hours at 530 ℃ to form a nitriding layer; the nitriding process parameters are as follows: the cathode voltage is 600V, the nitrogen flow is 100ml/min, the air pressure in the furnace is 500Pa, and the volume ratio of the nitrogen to the hydrogen is 1:4.
co-cementation treatment is carried out on the surface of the nitriding layer in an ammonia gas environment, sponge titanium is used for catalytic cementation, the co-cementation gas is mixed gas of ethanol and carbon disulfide, the co-cementation is carried out for 3 hours at 540 ℃, a co-cementation layer is formed, deionized water is used for cleaning, and drying is carried out, so that the pretreated deformed steel is obtained; the co-permeation process parameters are as follows: the ammonia flow is 2L/min, and the volume ratio of ethanol to carbon disulfide is 4:1, a step of; the flow rate of the co-permeation gas is 0.2L/min.
(3) Taking pretreated deformed steel, transferring the deformed steel into vacuum, bombarding and cleaning for 25min by argon, introducing nitrogen, taking a chromium target as a sputtering source, and sputtering a chromium nitride layer on the surface of the co-permeation layer for 20min; fixing a mask plate on the surface of the pretreated deformed steel, and continuously sputtering a chromium nitride layer on the surface of the pretreated deformed steel fixed with the mask plate for 20min; the technological parameters of the chromium nitride layer are as follows: the nitrogen flow is 8sccm, the argon flow is 15sccm, the chromium target power is 100W, and the cavity pressure is 0.5Pa.
Then sputtering a chromium aluminum nitride layer on the surface of the chromium nitride layer by taking a chromium target and aluminum palladium as sputtering sources, wherein the sputtering time is 1.5h, and the technological parameters of the chromium aluminum nitride layer are as follows: the nitrogen flow is 8sccm, the argon flow is 20sccm, the chromium target power is 250W, the aluminum palladium power is 250W, and the cavity pressure is 0.5Pa.
When the chromium nitride layer and the chromium nitride aluminum layer are sputtered, an external magnetic field is introduced, the direction of the external magnetic field is perpendicular to the pretreated deformed steel, and the intensity of the external magnetic field is 50mT.
And removing the mask after sputtering, placing the pretreated deformed steel in an acetone solution for ultrasonic cleaning, cleaning by adopting absolute ethyl alcohol and deionized water in sequence, and carrying out vacuum drying to obtain a finished product.
Comparative example 1: comparative example 1 control experiments on the basis of example 4, no reticle was introduced in comparative example 1.
A processing technology of high-strength seamless deformed steel comprises the following steps:
(1) Placing the deformed steel into an acetone solution for ultrasonic cleaning, sequentially adopting absolute ethyl alcohol and deionized water for ultrasonic cleaning, and carrying out vacuum drying; shot blasting is carried out on the surface of the deformed steel; the technological parameters of shot blasting are as follows: the spraying pressure is 120MPa, the spraying target distance is 20mm, the moving speed of the nozzle is 400mm/min, the shot blasting is 304 stainless steel shot with the diameter of 0.5mm, and the spraying time is 40min.
(2) Taking deformed steel subjected to shot blasting treatment, carrying out ion nitriding on the surface of the deformed steel, wherein nitriding gas is mixed gas of nitrogen and hydrogen, and nitriding for 4 hours at 530 ℃ to form a nitriding layer; the nitriding process parameters are as follows: the cathode voltage is 600V, the nitrogen flow is 100ml/min, the air pressure in the furnace is 500Pa, and the volume ratio of the nitrogen to the hydrogen is 1:4.
co-cementation treatment is carried out on the surface of the nitriding layer in an ammonia gas environment, sponge titanium is used for catalytic cementation, the co-cementation gas is mixed gas of ethanol and carbon disulfide, the co-cementation is carried out for 3 hours at 540 ℃, a co-cementation layer is formed, deionized water is used for cleaning, and drying is carried out, so that the pretreated deformed steel is obtained; the co-permeation process parameters are as follows: the ammonia flow is 2L/min, and the volume ratio of ethanol to carbon disulfide is 4:1, a step of; the flow rate of the co-permeation gas is 0.2L/min.
(3) Taking pretreated deformed steel, transferring the deformed steel into vacuum, bombarding and cleaning for 25min by argon, introducing nitrogen, taking a chromium target as a sputtering source, and sputtering a chromium nitride layer on the surface of the co-permeation layer for 40min; the technological parameters of the chromium nitride layer are as follows: the nitrogen flow is 8sccm, the argon flow is 15sccm, the chromium target power is 100W, and the cavity pressure is 0.5Pa.
Then sputtering a chromium aluminum nitride layer on the surface of the chromium nitride layer by taking a chromium target and aluminum palladium as sputtering sources, wherein the sputtering time is 1.5h, and the technological parameters of the chromium aluminum nitride layer are as follows: the nitrogen flow is 8sccm, the argon flow is 20sccm, the chromium target power is 250W, the aluminum palladium power is 250W, and the cavity pressure is 0.5Pa.
When the chromium nitride layer and the chromium nitride aluminum layer are sputtered, an external magnetic field is introduced, the direction of the external magnetic field is vertical to the pretreated deformed steel, and the intensity of the external magnetic field is 30mT.
And after sputtering, placing the pretreated deformed steel in an acetone solution for ultrasonic cleaning, and then sequentially adopting absolute ethyl alcohol and deionized water for cleaning, and carrying out vacuum drying to obtain a finished product.
Comparative example 2: comparative example 2 a control test was carried out on the basis of example 4, and nitriding treatment was not carried out in comparative example 2.
A processing technology of high-strength seamless deformed steel comprises the following steps:
(1) Placing the deformed steel into an acetone solution for ultrasonic cleaning, sequentially adopting absolute ethyl alcohol and deionized water for ultrasonic cleaning, and carrying out vacuum drying; shot blasting is carried out on the surface of the deformed steel; the technological parameters of shot blasting are as follows: the spraying pressure is 120MPa, the spraying target distance is 20mm, the moving speed of the nozzle is 400mm/min, the shot blasting is 304 stainless steel shot with the diameter of 0.5mm, and the spraying time is 40min.
(2) Taking deformed steel subjected to shot blasting treatment, performing co-permeation treatment on the surface of the deformed steel in an ammonia environment, wherein sponge titanium is used for promoting permeation, co-permeation gas is mixed gas of ethanol and carbon disulfide, co-permeation is performed for 3 hours at 540 ℃ to form a co-permeation layer, and the deformed steel is obtained by washing with deionized water and drying; the co-permeation process parameters are as follows: the ammonia flow is 2L/min, and the volume ratio of ethanol to carbon disulfide is 4:1, a step of; the flow rate of the co-permeation gas is 0.2L/min.
(3) Taking pretreated deformed steel, transferring the deformed steel into vacuum, bombarding and cleaning for 25min by argon, introducing nitrogen, taking a chromium target as a sputtering source, and sputtering a chromium nitride layer on the surface of the co-permeation layer for 20min; fixing a mask plate on the surface of the pretreated deformed steel, and continuously sputtering a chromium nitride layer on the surface of the pretreated deformed steel fixed with the mask plate for 20min; the technological parameters of the chromium nitride layer are as follows: the nitrogen flow is 8sccm, the argon flow is 15sccm, the chromium target power is 100W, and the cavity pressure is 0.5Pa.
Then sputtering a chromium aluminum nitride layer on the surface of the chromium nitride layer by taking a chromium target and aluminum palladium as sputtering sources, wherein the sputtering time is 1.5h, and the technological parameters of the chromium aluminum nitride layer are as follows: the nitrogen flow is 8sccm, the argon flow is 20sccm, the chromium target power is 250W, the aluminum palladium power is 250W, and the cavity pressure is 0.5Pa.
When the chromium nitride layer and the chromium nitride aluminum layer are sputtered, an external magnetic field is introduced, the direction of the external magnetic field is vertical to the pretreated deformed steel, and the intensity of the external magnetic field is 30mT.
And removing the mask after sputtering, placing the pretreated deformed steel in an acetone solution for ultrasonic cleaning, cleaning by adopting absolute ethyl alcohol and deionized water in sequence, and carrying out vacuum drying to obtain a finished product.
Comparative example 3: comparative example 3 a control experiment was carried out on the basis of example 4, in which comparative example 3 the chromium aluminium nitride layer was replaced by a titanium aluminium nitride layer.
A processing technology of high-strength seamless deformed steel comprises the following steps:
(1) Placing the deformed steel into an acetone solution for ultrasonic cleaning, sequentially adopting absolute ethyl alcohol and deionized water for ultrasonic cleaning, and carrying out vacuum drying; shot blasting is carried out on the surface of the deformed steel; the technological parameters of shot blasting are as follows: the spraying pressure is 120MPa, the spraying target distance is 20mm, the moving speed of the nozzle is 400mm/min, the shot blasting is 304 stainless steel shot with the diameter of 0.5mm, and the spraying time is 40min.
(2) Taking deformed steel subjected to shot blasting treatment, carrying out ion nitriding on the surface of the deformed steel, wherein nitriding gas is mixed gas of nitrogen and hydrogen, and nitriding for 4 hours at 530 ℃ to form a nitriding layer; the nitriding process parameters are as follows: the cathode voltage is 600V, the nitrogen flow is 100ml/min, the air pressure in the furnace is 500Pa, and the volume ratio of the nitrogen to the hydrogen is 1:4.
co-cementation treatment is carried out on the surface of the nitriding layer in an ammonia gas environment, sponge titanium is used for catalytic cementation, the co-cementation gas is mixed gas of ethanol and carbon disulfide, the co-cementation is carried out for 3 hours at 540 ℃, a co-cementation layer is formed, deionized water is used for cleaning, and drying is carried out, so that the pretreated deformed steel is obtained; the co-permeation process parameters are as follows: the ammonia flow is 2L/min, and the volume ratio of ethanol to carbon disulfide is 4:1, a step of; the flow rate of the co-permeation gas is 0.2L/min.
(3) Taking pretreated deformed steel, transferring the deformed steel into vacuum, bombarding and cleaning for 25min by argon, introducing nitrogen, taking a chromium target as a sputtering source, and sputtering a chromium nitride layer on the surface of the co-permeation layer for 20min; fixing a mask plate on the surface of the pretreated deformed steel, and continuously sputtering a chromium nitride layer on the surface of the pretreated deformed steel fixed with the mask plate for 20min; the technological parameters of the chromium nitride layer are as follows: the nitrogen flow is 8sccm, the argon flow is 15sccm, the chromium target power is 100W, and the cavity pressure is 0.5Pa.
Then sputtering a titanium aluminum nitride layer on the surface of the chromium nitride layer by taking a chromium target and aluminum palladium as sputtering sources, wherein the sputtering time is 1.5h, and the technological parameters of the titanium aluminum nitride layer are as follows: the nitrogen flow is 8sccm, the argon flow is 20sccm, the power of the titanium target is 250W, the power of the aluminum palladium is 250W, and the pressure of the cavity is 0.5Pa.
When the chromium nitride layer and the titanium aluminum nitride layer are sputtered, an external magnetic field is introduced, the direction of the external magnetic field is vertical to the pretreated deformed steel, and the intensity of the external magnetic field is 30mT.
And removing the mask after sputtering, placing the pretreated deformed steel in an acetone solution for ultrasonic cleaning, cleaning by adopting absolute ethyl alcohol and deionized water in sequence, and carrying out vacuum drying to obtain a finished product.
Detection experiment:
1. the surface hardness of the deformed steel samples prepared in examples 1 to 5 and comparative examples 1 to 3 was measured by a HV-1000 Vickers hardness tester, and 3 to 5 positions were measured at the time of measurement, averaged and recorded.
2. The surface abrasion resistance of the deformed steel samples prepared in examples 1 to 5 and comparative examples 1 to 3 was measured, the friction pair was alumina ceramic balls (diameter: 9.38 mm), the friction mode was circumference, the circumference radius was 5mm, the normal load was 4N, and the abrasion rate was measured and calculated by grinding at a rotation speed of 60r/min for 30min. The test temperatures were 25℃and 500℃respectively.
3. Salt spray corrosion tests are carried out on the deformed steel samples prepared in the examples 1-5 and the comparative examples 1-3, the test method is carried out according to the standard of ASTMB117-97, the test temperature is 35 ℃, the pH is 6.5-7.2, and the neutral NaCl solution is 5%; after 360h of testing, the surface corrosion was observed.
List one
Watch II
Conclusion: the application discloses a high-strength seamless deformed steel and a processing technology thereof, which are reasonable in technological design and simple to operate, and the prepared deformed steel has excellent surface wear resistance, is high in strength and surface hardness, can be widely applied to the technical fields of various building constructions, equipment processing and the like, and has high practicability.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present application, and the present application is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present application has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (6)
1. A processing technology of high-strength seamless deformed steel is characterized in that: the method comprises the following steps:
(1) Placing the deformed steel into an acetone solution for ultrasonic cleaning, sequentially adopting absolute ethyl alcohol and deionized water for ultrasonic cleaning, and carrying out vacuum drying; shot blasting is carried out on the surface of the deformed steel;
(2) Taking the deformed steel subjected to shot blasting treatment, carrying out ion nitriding on the surface of the deformed steel, wherein nitriding gas is mixed gas of nitrogen and hydrogen, and nitriding for 4-5 hours at 520-530 ℃ to form a nitriding layer;
co-cementation treatment is carried out on the surface of the nitriding layer in an ammonia gas environment, sponge titanium is used for catalytic cementation, the co-cementation gas is mixed gas of ethanol and carbon disulfide, the co-cementation is carried out for 3-4 hours at the temperature of 530-540 ℃ to form a co-cementation layer, deionized water is used for cleaning, and drying is carried out to obtain pretreated deformed steel;
(3) Taking pretreated deformed steel, transferring the deformed steel into vacuum, bombarding and cleaning for 20-25 min by argon, introducing nitrogen, taking a chromium target as a sputtering source, and sputtering a chromium nitride layer on the surface of the co-permeation layer for 10-20 min; fixing a mask plate on the surface of the pretreated deformed steel, and continuously sputtering a chromium nitride layer on the surface of the pretreated deformed steel fixed with the mask plate for 20-30 min;
then sputtering a chromium aluminum nitride layer on the surface of the chromium nitride layer by taking a chromium target and aluminum palladium as sputtering sources for 1-1.5 h, removing a mask after sputtering, placing the pretreated deformed steel in an acetone solution for ultrasonic cleaning, cleaning by adopting absolute ethyl alcohol and deionized water in sequence, and carrying out vacuum drying to obtain a finished product;
in the step (3), when sputtering the chromium nitride layer and the chromium nitride aluminum layer, an external magnetic field is introduced, the direction of the external magnetic field is vertical to the pretreated deformed steel, and the intensity of the external magnetic field is 30-50 mT; in the step (3), the pattern of the mask plate is formed by periodically arranging a plurality of hollow regular hexagons, the side length of each hollow regular hexagon is 20-30 mu m, the hollow regular hexagons are separated by spacing bars on the mask plate, and the width of each spacing bar is 10-15 mu m;
in the step (3), the technological parameters of the chromium nitride layer are as follows: the flow rate of nitrogen is 6-8 sccm, the flow rate of argon is 15-20 sccm, the power of a chromium target is 100W, and the pressure of a cavity is 0.5Pa; the technological parameters of the chromium nitride aluminum layer are as follows: the flow rate of nitrogen is 6-8 sccm, the flow rate of argon is 15-20 sccm, the power of a chromium target is 250W, the power of aluminum palladium is 200-250W, and the pressure of a cavity is 0.5Pa.
2. The process for processing high-strength seamless deformed steel according to claim 1, wherein: in the step (1), the technological parameters of shot blasting are as follows: the spraying pressure is 110-120 MPa, the spraying target distance is 20-30 mm, the moving speed of the nozzle is 400-450 mm/min, and the spraying time is 30-40 min.
3. The process for processing high-strength seamless deformed steel according to claim 1, wherein: in the step (2), nitriding process parameters are as follows: the cathode voltage is 600-700V, the nitrogen flow is 80-100 ml/min, the air pressure in the furnace is 500Pa, and the volume ratio of the nitrogen to the hydrogen is 1:4.
4. the process for processing high-strength seamless deformed steel according to claim 1, wherein: in the step (2), the co-permeation process parameters are as follows: the ammonia flow is 2L/min, and the volume ratio of ethanol to carbon disulfide is 4:1, a step of; the flow rate of the co-permeation gas is 0.2L/min.
5. The process for processing high-strength seamless deformed steel according to claim 1, wherein: the composition of the deformed steel is as follows: calculated by mass fraction, C0.08%, si 1%, mn 2%, P
0.35 percent, 0.03 percent of S, 10 to 14 percent of Ni, 16 to 18.5 percent of Cr, 2 to 3 percent of Mo and the balance of Fe.
6. A high-strength seamless deformed steel produced by the process of any one of claims 1 to 5.
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