CN109988991A - A kind of depth Nitriding Compound alloy bushing and cylinder and preparation method thereof - Google Patents
A kind of depth Nitriding Compound alloy bushing and cylinder and preparation method thereof Download PDFInfo
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- CN109988991A CN109988991A CN201910301583.4A CN201910301583A CN109988991A CN 109988991 A CN109988991 A CN 109988991A CN 201910301583 A CN201910301583 A CN 201910301583A CN 109988991 A CN109988991 A CN 109988991A
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- cylinder
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- bushing
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- 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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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- 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
- C23C8/06—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
- C23C8/08—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 only one element being applied
- C23C8/24—Nitriding
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- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
Abstract
The present invention provides a kind of depth Nitriding Compound alloy bushing and cylinders and preparation method thereof, the preparation method is comprising steps of composite alloy bushing is pressed into cylinder and is worked into finished work-piece by (1), or composite alloy cylinder is directly worked into finished work-piece；(2) finished work-piece made from above-mentioned processing is cleaned, and dried；(3) finished work-piece after drying is sent into nitriding furnace and carries out nitrogen treatment, control nitridation furnace temperature is 480-550 DEG C of heat preservation progress nitriding in 20-100 hours, then carry out within heat preservation 1-10 hours moving back in 550-580 DEG C nitrogen to get.The depth Nitriding Compound alloy bushing and cylinder prepared using the method for the present invention, the depth Nitriding Compound alloy bushing and cylinder of the method for the present invention preparation are used in its opening, the nitration case for forming nitridation depth 0.1-0.6mm, nitrogenizing hardness HV800-1100, can effectively increase the intensity of bushing and cylinder, wear-resisting and corrosion resistance.
Description
Technical field
The present invention relates to a kind of a kind of nitridation of the depth of extruder technology field more particularly to high-strength wearproof corrosion-resistant is multiple
Close alloy bushing and cylinder and preparation method thereof.
Background technique
With plastic products use more and more extensive in people's production and living, plastic products enterprise is to plastic pellet
Dosage demand increasingly increases, while more and more abundant to the function of plastics, and these functions often by adding in the plastic
Functional aid is added to realize that the hardness that these auxiliary agents have is quite high, some has stronger corrosivity, this is just to extruder
Cylinder and bushing produce large effect, so that the abrasion of cylinder, corrosion especially severe, service life are comparable of short duration.
Existing composite alloy (alloys such as Ni-based, cobalt-based) bushing or composite alloy cylinder matrix are the ordinary carbon steels such as 45 steel,
Substrate intensity is lower, no wear-corrosion resistance.After bushing or cylinder bore service life obtain effectively being promoted, matrix is used
The wear-corrosion resistance of service life and opening becomes the another key element for restricting accessory and production line whole service life.
In addition, publication CN105235188A discloses a kind of cone double machine barrel, it is arranged on the surface of the neck bush
The nitration case for having one layer of via nitride processing and being formed, has good wearability and corrosion resistance, can guarantee plastics system for a long time
The quality of product.But the patent has the following deficiencies: that (1) its inner wall is that two panels bushing combination forms, and there are gap, cylinder makes
It can be through thus crevice corrosion to matrix, to reduce the service life of cylinder with material in the process；(2) depositing due to bushing gap
Material can gather in a little gaps, cause local temperature excessively high and imitation frosted glass, occur stain in the product, influence the quality of plastics；
(3) its used bushing is that anti-wearing liner carries out nitrogen treatment again, since its bushing does not have corrosion-resistant function, only relies on it
The nitration case of surface about 0.5mm resists corrosion, after the abrasion of this nitration case, bushing under the comprehensive function corroded and worn,
Rate of depreciation greatly increases；(4) as described in its specification can more resleeve, but so increase bushing expense and thus make
At shutdown loss.
Therefore, for the ordinary carbon steels composite alloy bushings such as current 45 steel and cylinder in matrix and aperture position abrasion-proof corrosion-proof
Corrosion can deficiency and existing patented technology present in defect, it is necessary to improve, to improve accessory and production line
Whole service performance and service life.
Summary of the invention
The present invention is to solve the above problem in the prior art, proposes that a kind of depth nitridation of high-strength wearproof corrosion-resistant is multiple
Close alloy bushing and cylinder and preparation method thereof.
To achieve the above object, the invention adopts the following technical scheme:
The first aspect of the invention is to provide the preparation method of a kind of depth Nitriding Compound alloy bushing and cylinder, including
Following steps:
(1) composite alloy bushing is pressed into cylinder and is worked into finished work-piece, or directly process composite alloy cylinder
To finished work-piece；
(2) finished work-piece made from above-mentioned processing is cleaned, and dried；
(3) finished work-piece after drying is sent into nitriding furnace and carries out nitrogen treatment, control nitridation furnace temperature is 480-550
DEG C heat preservation progress nitriding in 20-100 hours, then move back within heat preservation 1-10 hours nitrogen in 550-580 DEG C to get depth Nitriding Compound
Alloy bushing and cylinder.
Further, the preparation method of the depth Nitriding Compound alloy bushing and cylinder, finished product described in step (2)
Workpiece is cleaned using gasoline or cleaning agent.
Further, the preparation method of the depth Nitriding Compound alloy bushing and cylinder, nitriding described in step (3)
Temperature be 500-525 DEG C heat preservation 30-60 hour, control nitrogenize resolution ratio in 80-90%.
Further, the preparation method of the depth Nitriding Compound alloy bushing and cylinder, step move back nitrogen described in (3)
Temperature is 560-570 DEG C, keeps the temperature 2-8 hours, and control nitridation resolution ratio is in 40-50%.
The second aspect of the invention is to provide a kind of depth Nitriding Compound alloy bushing of method preparation as described above
And cylinder, the composite alloy bushing and cylinder inboard wall are provided with composite alloy layer, the composite alloy bushing and cylinder are opened
It is provided with nitration case at mouthful, the nitration case is formed in the composite alloy layer surface.
Further, the depth Nitriding Compound alloy bushing and cylinder, the nitride thickness are 0.1-0.6mm,
Nitrogenize hardness HV800-1100.
Further, the depth Nitriding Compound alloy bushing and cylinder, the composite alloy layer is with a thickness of 0.3-
1.0mm。
Further, the depth Nitriding Compound alloy bushing and cylinder, the composite alloy layer are nickel-base alloy, cobalt
Based alloy or ferrous alloy.
The present invention by adopting the above technical scheme, compared with prior art, has the following technical effect that
Depth Nitriding Compound alloy bushing and cylinder provided by the invention and preparation method thereof, by composite alloy bushing
Depth nitrogen treatment is carried out with the opening of cylinder, the nitridation for forming nitridation depth 0.1-0.6mm, nitrogenizing hardness HV800-1100
Layer can effectively increase the intensity of bushing and cylinder, wear-resisting and corrosion resistance, compensate for the ordinary carbon steels composite alloy such as 45 steel
The deficiency of bushing and cylinder in matrix and aperture position wear-corrosion resistance.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of depth Nitriding Compound alloy bushing of the present invention；
Fig. 2 is a kind of structural schematic diagram of depth Nitriding Compound alloy cylinder of the present invention.
Specific embodiment
As illustrated in fig. 1 and 2, depth Nitriding Compound alloy bushing 10 and cylinder 20 based on the method for the present invention preparation.Wherein,
The inner wall of the composite alloy bushing 10 is provided with composite alloy layer 11, and the opening of the composite alloy bushing 11 is provided with nitrogen
Change layer 12, the nitration case 12 is formed in the surface of the composite alloy layer 11；And the inner wall of the composite alloy cylinder 20
It is provided with composite alloy layer 21, the opening of the composite alloy cylinder 20 is provided with nitration case 22, the formation of nitration case 22
In the surface of the composite alloy layer 21.In the present embodiment, the composite alloy layer is nickel-base alloy, cobalt-base alloys or iron-based conjunction
Gold.
The nitride thickness is 0.1-0.6mm, nitrogenizes hardness HV800-1100.The composite alloy layer is with a thickness of 0.3-
1.0mm can effectively increase the intensity of bushing and cylinder, wear-resisting and corrosion resistance, it is compound to compensate for the ordinary carbon steels such as 45 steel
The deficiency of alloy bushing and cylinder in matrix and aperture position wear-corrosion resistance.
The present invention is described in more detail below by specific embodiment, for a better understanding of the present invention,
But following embodiments are not intended to limit the scope of the invention.
Embodiment 1
The present embodiment provides the preparations of a kind of depth Nitriding Compound alloy bushing and cylinder, include the following steps:
(1) cobalt-base alloys bushing is pressed into cylinder and is worked into finished work-piece, or directly process cobalt-base alloys cylinder
To finished work-piece；
(2) finished work-piece made from above-mentioned processing is cleaned using gasoline or cleaning agent, and is dried in 56-60 DEG C,
It is spare；
(3) finished work-piece after drying is sent into nitriding furnace and carries out nitrogen treatment, control nitridation furnace temperature is 480-500
DEG C, control nitridation resolution ratio keeps the temperature progress nitriding in 80 hours in 80-90%；Then in 550-560 DEG C, control nitridation resolution ratio exists
40-50%, heat preservation carry out moving back nitrogen for 2 hours, obtained depth Nitriding Compound alloy bushing and cylinder, nitride thickness 0.25mm,
Nitration case hardness HV1050.
Embodiment 2
The present embodiment provides the preparations of a kind of depth Nitriding Compound alloy bushing and cylinder, include the following steps:
(1) cobalt-base alloys bushing is pressed into cylinder and is worked into finished work-piece, or directly process cobalt-base alloys cylinder
To finished work-piece；
(2) finished work-piece made from above-mentioned processing is cleaned using gasoline or cleaning agent, and is dried in 56-60 DEG C,
It is spare；
(3) finished work-piece after drying is sent into nitriding furnace and carries out nitrogen treatment, control nitridation furnace temperature is 520-530
DEG C, control nitridation resolution ratio keeps the temperature progress nitriding in 50 hours in 80-90%；Then in 550-560 DEG C, control nitridation resolution ratio exists
40-50%, heat preservation carry out moving back nitrogen for 6 hours, obtained depth Nitriding Compound alloy bushing and cylinder, nitride thickness 0.42mm,
Nitration case hardness HV1050.
Embodiment 3
The present embodiment provides the preparations of a kind of depth Nitriding Compound alloy bushing and cylinder, include the following steps:
(1) ferrous alloy bushing is pressed into cylinder and is worked into finished work-piece, or directly process ferrous alloy cylinder
To finished work-piece；
(2) finished work-piece made from above-mentioned processing is cleaned using gasoline or cleaning agent, and is dried in 50-55 DEG C,
It is spare；
(3) finished work-piece after drying is sent into nitriding furnace and carries out nitrogen treatment, control nitridation furnace temperature is 550-550
DEG C, control nitridation resolution ratio keeps the temperature progress nitriding in 50 hours in 80-90%；Then in 550-560 DEG C, control nitridation resolution ratio exists
40-50%, heat preservation carry out moving back nitrogen for 3 hours, obtained depth Nitriding Compound alloy bushing and cylinder, nitride thickness 0.20mm,
Nitration case hardness HV1100.
Embodiment 4
The present embodiment provides the preparations of a kind of depth Nitriding Compound alloy bushing and cylinder, include the following steps:
(1) nickel-base alloy bushing is pressed into cylinder and is worked into finished work-piece, or directly process nickel-base alloy cylinder
To finished work-piece；
(2) finished work-piece made from above-mentioned processing is cleaned using gasoline or cleaning agent, and is dried in 50-55 DEG C,
It is spare；
(3) finished work-piece after drying is sent into nitriding furnace and carries out nitrogen treatment, control nitridation furnace temperature is 550-555
DEG C, control nitridation resolution ratio keeps the temperature progress nitriding in 45 hours in 80-90%；Then in 550-560 DEG C, control nitridation resolution ratio exists
40-50%, heat preservation carry out moving back nitrogen for 2 hours, obtained depth Nitriding Compound alloy bushing and cylinder, nitride thickness 0.15mm,
Nitration case hardness HV1100.
To sum up, the composite alloy cylinder after being nitrogenized using the method for the present invention, non-corroding damaged condition in use process, opening
Since there are high abrasion, corrosion resistant performances to nitrogenize protective layer, nitridation after-opening cylinder service life promotes 3-6 times, substantially reduces at place
Use cost and maintenance time.
In addition, the composite alloy cylinder after nitridation, alloy surface hardness are further promoted, reach HRC56-60, it is resistance to
3 times of performance boost or so of mill, corrosion resistance is significantly improved, and is used test, and service life is 3-6 times before nitridation.
Specific embodiments of the present invention are described in detail above, but it is merely an example, the present invention is simultaneously unlimited
It is formed on particular embodiments described above.To those skilled in the art, any couple of present invention carries out equivalent modifications and
Substitution is also all among scope of the invention.Therefore, without departing from the spirit and scope of the invention made by equal transformation and
Modification, all should be contained within the scope of the invention.
Claims (8)
1. a kind of preparation method of depth Nitriding Compound alloy bushing and cylinder, which comprises the steps of:
(1) composite alloy bushing is pressed into cylinder and is worked into finished work-piece, or be directly worked into composite alloy cylinder
Product workpiece；
(2) finished work-piece made from above-mentioned processing is cleaned, and dried；
(3) finished work-piece after drying is sent into nitriding furnace and carries out nitrogen treatment, control nitridation furnace temperature is 480-550 DEG C of guarantor
Then warm 20-100 hours progress nitriding carries out moving back nitrogen for heat preservation 1-10 hours to get depth Nitriding Compound alloy in 550-580 DEG C
Bushing and cylinder.
2. the preparation method of depth Nitriding Compound alloy bushing and cylinder according to claim 1, which is characterized in that step
(2) finished work-piece described in is cleaned using gasoline or cleaning agent.
3. the preparation method of depth Nitriding Compound alloy bushing and cylinder according to claim 1, which is characterized in that step
(3) nitriding temperature described in be 500-525 DEG C heat preservation 30-60 hour, control nitrogenize resolution ratio in 80-90%.
4. the preparation method of depth Nitriding Compound alloy bushing and cylinder according to claim 1, which is characterized in that step
(3) it is 560-570 DEG C that nitrogen temperature is moved back described in, keeps the temperature 2-8 hours, and control nitridation resolution ratio is in 40-50%.
5. a kind of depth Nitriding Compound alloy bushing and cylinder prepared such as any one of claim 1-4 the method, feature
It is, the composite alloy bushing and cylinder inboard wall are provided with composite alloy layer, the opening of the composite alloy bushing and cylinder
Place is provided with nitration case, and the nitration case is formed in the composite alloy layer surface.
6. depth Nitriding Compound alloy bushing according to claim 5 and cylinder, which is characterized in that the nitride thickness
For 0.1-0.6mm, hardness HV800-1100 is nitrogenized.
7. depth Nitriding Compound alloy bushing according to claim 5 and cylinder, which is characterized in that the composite alloy layer
With a thickness of 0.3-1.0mm.
8. depth Nitriding Compound alloy bushing according to claim 5 and cylinder, which is characterized in that the composite alloy layer
For nickel-base alloy, cobalt-base alloys or ferrous alloy.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910301583.4A CN109988991A (en) | 2019-04-16 | 2019-04-16 | A kind of depth Nitriding Compound alloy bushing and cylinder and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910301583.4A CN109988991A (en) | 2019-04-16 | 2019-04-16 | A kind of depth Nitriding Compound alloy bushing and cylinder and preparation method thereof |
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| CN109988991A true CN109988991A (en) | 2019-07-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114875353A (en) * | 2022-04-27 | 2022-08-09 | 宁波同创强磁材料有限公司 | Preparation method of high-corrosion-resistance sintered neodymium-iron-boron magnet |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104480424A (en) * | 2014-12-02 | 2015-04-01 | 贵州红林机械有限公司 | Method for nitriding nitrided steel 135 material |
| CN109136829A (en) * | 2018-10-23 | 2019-01-04 | 中国石油大学(华东) | A kind of steel substrate surface alloying-glow discharge nitriding wear-and corrosion-resistant composite modified layer and preparation method thereof |
-
2019
- 2019-04-16 CN CN201910301583.4A patent/CN109988991A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104480424A (en) * | 2014-12-02 | 2015-04-01 | 贵州红林机械有限公司 | Method for nitriding nitrided steel 135 material |
| CN109136829A (en) * | 2018-10-23 | 2019-01-04 | 中国石油大学(华东) | A kind of steel substrate surface alloying-glow discharge nitriding wear-and corrosion-resistant composite modified layer and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114875353A (en) * | 2022-04-27 | 2022-08-09 | 宁波同创强磁材料有限公司 | Preparation method of high-corrosion-resistance sintered neodymium-iron-boron magnet |
| CN114875353B (en) * | 2022-04-27 | 2024-03-19 | 宁波同创强磁材料有限公司 | Preparation method of high-corrosion-resistance sintered NdFeB magnet |
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Application publication date: 20190709 |