CN110815994A - Three-layer composite self-lubricating material and continuous production process thereof - Google Patents
Three-layer composite self-lubricating material and continuous production process thereof Download PDFInfo
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- CN110815994A CN110815994A CN201911012265.2A CN201911012265A CN110815994A CN 110815994 A CN110815994 A CN 110815994A CN 201911012265 A CN201911012265 A CN 201911012265A CN 110815994 A CN110815994 A CN 110815994A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/02—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers
- B22F7/04—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers with one or more layers not made from powder, e.g. made from solid metal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D7/00—Producing flat articles, e.g. films or sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/18—Layered products comprising a layer of metal comprising iron or steel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
- B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/28—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42
- B32B27/288—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42 comprising polyketones
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2071/00—Use of polyethers, e.g. PEEK, i.e. polyether-etherketone or PEK, i.e. polyetherketone or derivatives thereof, as moulding material
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Laminated Bodies (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
Abstract
The invention discloses a three-layer composite self-lubricating material and a continuous production process thereof, wherein the three-layer composite self-lubricating material comprises a metal substrate layer, a ball powder layer and a PEEK modified material layer positioned on the ball powder layer; the PEEK modified material layer is compounded on the surface of the spherical powder layer through hot rolling; according to the invention, plastic particles are softened and melted by the extruder, the extruded membrane is combined with the heated ball powder winding belt, and then the extruded membrane is synchronously compounded by the hot rolling mill, so that the problem that the heating plate is polluted in the plastic melting process can be effectively solved, meanwhile, the material hot rolling roll is directly compounded, so that a release agent can be avoided, and the problem of the surface smoothness of the plastic can be effectively solved.
Description
Technical Field
The invention relates to a processing technology of a composite material, in particular to a three-layer composite self-lubricating material and a continuous production technology thereof.
Background
The production process of the traditional three-layer composite self-lubricating material is generally three, one is that a low-carbon steel plate and spherical bronze powder are sintered into a spherical powder plate, PEEK modified powder is placed on the spherical bronze powder layer, plastics are melted by heating, and finally the three-layer composite plate is rolled by a rolling mill; secondly, sintering a spherical powder plate, coating a layer of modified polyether-ether-ketone film on the surface of the spherical bronze powder layer, and infiltrating, embedding and combining contact surfaces in a molten state through hot pressing to prepare a three-layer composite plate; and thirdly, covering modified PEEK plastic particles on the spherical bronze powder layer of the spherical powder plate, heating and softening the spherical bronze powder layer by a tunnel furnace, and rolling the spherical bronze powder layer into a three-layer composite plate. The biggest problem in the three production processes is that the sizes of two ends are not uniform, and the size precision of the plate is poor. And secondly, the utilization rate of the material for producing and processing the lining of the short plate is low.
Disclosure of Invention
The invention aims to provide a three-layer composite self-lubricating material and a continuous production process thereof, which aim to solve the problems in the background technology; meanwhile, the problem that the heating plate is polluted in the plastic melting process can be effectively solved, the hot roll is directly compounded, the release agent can be avoided, and the problem of the surface smoothness of the plastic can be effectively solved.
In order to achieve the purpose, the invention provides the following technical scheme:
a three-layer composite self-lubricating material comprises a metal substrate layer, a ball powder layer and a PEEK modified material layer positioned on the ball powder layer; the PEEK modified material layer is compounded on the surface of the spherical powder layer through hot rolling; the PEEK modified material layer is composed of the following raw materials in parts by weight:
MoS2：0.5-15％；
fiber: 1 to 20 percent;
ZnS：0-12％；
TiO2：0.2-12％；
graphite: 0.5-10%;
zirconium phosphate: 0 to 10 percent;
alumina: 0 to 10 percent;
PEEK resin: and (4) the balance.
A production process of a three-layer composite self-lubricating material specifically comprises the following steps:
s1, preparing a PEEK modified material membrane, namely mixing the PEEK modified material according to a ratio, heating the mixture by an extruder to form a soft belt, and extruding the soft belt;
s1.1, preparation of a mixture: weighing the components according to the component proportion of the PEEK modified material layer; all the raw materials are put into a double-cone stirring barrel and stirred for 10-50 minutes at the speed of 10-100 revolutions per minute;
s1.2, extruding a PEEK modified material soft belt: drying the mixture obtained in the step S1.1 at the temperature of 100-200 ℃ for 4-5 hours, and preparing a soft belt by adopting a double-screw extruder;
s2, heating the PEEK modified material soft belt: the soft belt prepared in the step S1 is heated and kept at the temperature of 300-380 ℃ by keeping the temperature of the PEEK modified material soft belt, and the heating is to prevent the plastic soft belt from being cooled and hardened at the highest speed.
S3, sintering the spherical powder layer: uniformly paving ball powder on a metal substrate layer, and sintering the ball powder and the metal substrate layer together to form a composite plate according to the prior art;
s4, hot rolling and compounding of three layers of self-lubricating materials:
s4.1, synchronously compounding the soft belt in the step S2 and the ball powder in the step S3 through a hot rolling mill to obtain a three-layer composite self-lubricating material plate; each rolling reduction is 10-30%, the rolling passes are 1-6 times, and the total rolling reduction is 40-90%;
s4.2, performing finish rolling on the plate, and finally rolling the plate obtained in the step S4.1 to meet the requirement of a finished plate, wherein the rolling reduction is 1-5%, the rolling passes are 1-5 times, and the total rolling reduction is 1-25%.
Further, the metal substrate layer is one of an iron base, an iron-copper sintered base and a copper base.
Further, the average particle size of the spherical SiO2 is 50-100 nm;
further, the particle size of the graphite is larger than 400 meshes;
further, the mesh number of the PEEK resin powder is 50 meshes.
Further, all the raw materials should be dried before step S1.1, specifically, the raw materials are dried at a temperature of 130-150 ℃ for 2-4 hours.
Further, the mixture can be granulated for multiple times before the step S1.2, so that the raw materials can be mixed more sufficiently, the extruded soft belt is more uniform, and the stirring time in the step S1.1 can be reduced to 0-10 minutes.
Further, in step S1.2, the temperature of the sleeve of the extruder is set within the range of 250-350 ℃, the temperature of the die is controlled within the range of 300-400 ℃, the die pressing of the die head is 1-5MPa, and the length-diameter ratio of the twin-screw is (25-40): 1, the residence time of the mixture in the extruder is between 1 and 3 minutes.
Further, the composite board sintered in the step S3 is subjected to heat preservation under the micro-positive pressure and reducing atmosphere, the heat preservation temperature is 900-930 ℃, and the heat preservation time is 1.0-3.0 hours.
Further, the fibers are carbon fibers (i.e., C-fibers) or glass fibers.
Compared with the prior art, the invention has the beneficial effects that: according to the invention, plastic particles are softened and melted by the extruder, the extruded membrane is combined with the heated ball powder winding belt, and then the extruded membrane and the heated ball powder winding belt are synchronously compounded by the hot rolling mill, so that the defects of uneven sizes of two ends and poor plate size precision during short plate manufacturing are solved, the problem of pollution to a heating plate in the plastic melting process can be effectively solved, the material hot rolling roll is directly compounded, the use of a release agent can be avoided, and the problem of surface smoothness of the plastic can be effectively solved.
Detailed Description
The technical solution of the present patent will be described in further detail with reference to the following embodiments.
A three-layer composite self-lubricating material comprises a metal substrate layer, a ball powder layer and a PEEK modified material layer positioned on the ball powder layer; the metal substrate layer is one of an iron base, an iron-copper sintered base and a copper base, the ball powder layer is sintered on the substrate, and the PEEK modified material layer is compounded on the surface of the ball powder layer through hot rolling; the PEEK modified material layer is composed of the following raw materials in parts by weight:
MoS2：0.5-15％；
fiber: 1 to 20 percent;
ZnS：0-12％；
TiO2：0.2-12％；
graphite: 0.5-10%;
zirconium phosphate: 0 to 10 percent;
alumina: 0 to 10 percent;
PEEK resin: and (4) the balance.
The fiber is one of carbon fiber (namely C-fiber) or glass fiber; the spherical SiO2Has an average particle diameter of 50 to 100 nm; the particle size of the graphite is less than 400 meshes; the mesh number of the PEEK resin powder is 50 meshes;
a production process of a three-layer composite self-lubricating material specifically comprises the following steps:
s1, preparing a PEEK modified material membrane, namely mixing the PEEK modified material according to a ratio, heating the mixture by an extruder to form a soft belt, and extruding the soft belt;
s1.1, preparation of a mixture: weighing the components according to the component proportion of the PEEK modified material layer; all the raw materials are put into a double-cone stirring barrel and stirred for 10-50 minutes at the speed of 10-100 revolutions per minute;
s1.2, extruding a PEEK modified material soft belt: drying the mixture obtained in the step S1.1 at the temperature of 100-200 ℃ for 4-5 hours, and preparing a soft belt by adopting a double-screw extruder;
specifically, all raw materials should be dried before step S1.1, specifically, the raw materials are dried at the temperature of 130-150 ℃ for 2-4 hours;
before the step S1.2, the mixture can be subjected to granulation for multiple times, so that the raw materials can be mixed more sufficiently, the extruded soft belt is more uniform, and meanwhile, the stirring time in the step S1.1 can be shortened to 0-10 minutes;
in step S1.2, the temperature of the sleeve of the extruder is set within the range of 250-350 ℃, the temperature of the die is controlled within the range of 300-400 ℃, the die pressing of the machine head is 1-5MPa, and the length-diameter ratio of the twin screw is (25-40): 1, the retention time of the mixture in an extruder is 1-3 minutes;
s2, heating the PEEK modified material soft belt: the soft belt prepared in the step S1 is heated and kept at the temperature of 300-380 ℃ by keeping the temperature of the PEEK modified material soft belt, and the heating is to prevent the plastic soft belt from being cooled and hardened at the highest speed.
S3, sintering the spherical powder layer: uniformly paving ball powder on a metal substrate layer, and sintering the ball powder and the metal substrate layer together to form a composite plate according to the prior art;
specifically, the composite board sintered in the step S3 is subjected to heat preservation under the micro-positive pressure and reducing atmosphere, the heat preservation temperature is 900-930 ℃, and the heat preservation time is 1.0-3.0 hours;
s4, hot rolling and compounding of three layers of self-lubricating materials:
s4.1, synchronously compounding the soft belt in the step S2 and the ball powder in the step S3 through a hot rolling mill to obtain a three-layer composite self-lubricating material plate; each rolling reduction is 10-30%, the rolling passes are 1-6 times, and the total rolling reduction is 40-90%;
s4.2, performing finish rolling on the plate, and finally rolling the plate obtained in the step S4.1 to meet the requirement of a finished plate, wherein the rolling reduction is 1-5%, the rolling passes are 1-5 times, and the total rolling reduction is 1-25%.
Friction performance test of the present example:
dry friction test
Experimental equipment: friction wear testing machine
Test piece size: 37X 2.0mm
And (3) testing conditions are as follows: dry friction;
and (3) grinding the shaft oppositely: 45# steel with the hardness of HRC 42-47;
testing the environmental temperature: 23 ℃;
speed V: 0.5 m/s;
and (3) loading P: starting from the initial 1MPa, and then loading 0.8MPa every 10 min;
limiting temperature rise: 150 ℃;
test time: 100 min;
the test structure is shown in table 1 below:
TABLE 1 Dry Friction test data sheet for three-layer composite self-lubricating material
The three-layer composite self-lubricating material disclosed by the invention has excellent performance and accords with the use index.
Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.
Claims (8)
1. A three-layer composite self-lubricating material comprises a metal substrate layer, a ball powder layer and a PEEK modified material layer positioned on the ball powder layer; the PEEK modified material layer is compounded on the surface of the spherical powder layer by hot rolling; the PEEK modified material layer is composed of the following raw materials in parts by weight:
MoS2：0.5-15％；
fiber: 1 to 20 percent;
ZnS：0-12％；
TiO2：0.2-12％；
graphite: 0.5-10%;
zirconium phosphate: 0 to 10 percent;
alumina: 0 to 10 percent;
PEEK resin: and (4) the balance.
2. A production process of a three-layer composite self-lubricating material is characterized by comprising the following steps:
s1, preparing a PEEK modified material membrane, namely mixing the PEEK modified material according to a ratio, heating the mixture by an extruder to form a soft belt, and extruding the soft belt;
s1.1, preparation of a mixture: weighing the components according to the component proportion of the PEEK modified material layer; all the raw materials are put into a double-cone stirring barrel and stirred for 10-50 minutes at the speed of 10-100 revolutions per minute;
s1.2, extruding a PEEK modified material soft belt: drying the mixture obtained in the step S1.1 at the temperature of 100-200 ℃ for 4-5 hours, and preparing a soft belt by adopting a double-screw extruder;
s2, heating the PEEK modified material soft belt: the soft belt prepared in the step S1 is heated and kept at the temperature of 300-380 ℃ by keeping the temperature of the PEEK modified material soft belt, and the heating is to prevent the plastic soft belt from being cooled and hardened at the highest speed.
S3, sintering the spherical powder layer: uniformly paving ball powder on a metal substrate layer, and sintering the ball powder and the metal substrate layer together to form a composite plate according to the prior art;
s4, hot rolling and compounding of three layers of self-lubricating materials:
s4.1, synchronously compounding the soft belt in the step S2 and the ball powder in the step S3 through a hot rolling mill to obtain a three-layer composite self-lubricating material plate; each rolling reduction is 10-30%, the rolling passes are 1-6 times, and the total rolling reduction is 40-90%;
s4.2, performing finish rolling on the plate, and finally rolling the plate obtained in the step S4.1 to meet the requirement of a finished plate, wherein the rolling reduction is 1-5%, the rolling passes are 1-5 times, and the total rolling reduction is 1-25%.
3. The three-layer composite self-lubricating material of claim 1, wherein the metal substrate layer is one of iron-based, iron-copper sintered-based and copper-based.
4. The process for producing a three-layer composite self-lubricating material as claimed in claim 2, wherein all the raw materials are dried before step S1.1, specifically at a temperature of 130-150 ℃ for 2-4 hours.
5. The process for producing a three-layer composite self-lubricating material according to claim 2, wherein the mixture is granulated for a plurality of times before step S1.2, so that the raw materials are mixed more thoroughly and the extruded soft belt is more uniform, and the stirring time in step S1.1 is reduced to 0-10 minutes.
6. The process for producing a three-layer composite self-lubricating material as claimed in claim 2, wherein in step S1.2, the temperature of the extruder sleeve is set within the range of 250 ℃ to 350 ℃, the temperature of the die is controlled within the range of 300 ℃ to 400 ℃, the die pressing at the die head is 1 to 5MPa, and the length-diameter ratio of the twin screw is (25 to 40): 1, the residence time of the mixture in the extruder is between 1 and 3 minutes.
7. The process for producing a three-layer composite self-lubricating material according to claim 2, wherein the composite board sintered in step S3 is subjected to heat preservation under a slight positive pressure and a reducing atmosphere, wherein the heat preservation temperature is 900 ℃ to 930 ℃, and the heat preservation time is 1.0 to 3.0 hours.
8. Three-layer composite self-lubricating material and continuous production process thereof according to claim 1, characterized in that the fibers are carbon fibers (i.e. C-fibers) or glass fibers.
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Cited By (4)
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| CN111570790A (en) * | 2020-04-23 | 2020-08-25 | 嘉善双飞润滑材料有限公司 | POK three-layer composite self-lubricating material and preparation process thereof |
| CN113978059A (en) * | 2021-11-11 | 2022-01-28 | 合肥波林新材料股份有限公司 | Modified PEEK-based self-lubricating three-layer composite material and forming method thereof |
| CN115339171A (en) * | 2022-07-22 | 2022-11-15 | 嘉善双飞润滑材料有限公司 | Three-layer composite material of shaft sleeve for oil pump and preparation method thereof |
| CN117447799A (en) * | 2023-12-26 | 2024-01-26 | 江西理工大学 | Self-lubricating layer and preparation method and application thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN113978059A (en) * | 2021-11-11 | 2022-01-28 | 合肥波林新材料股份有限公司 | Modified PEEK-based self-lubricating three-layer composite material and forming method thereof |
| CN115339171A (en) * | 2022-07-22 | 2022-11-15 | 嘉善双飞润滑材料有限公司 | Three-layer composite material of shaft sleeve for oil pump and preparation method thereof |
| CN115339171B (en) * | 2022-07-22 | 2024-06-11 | 嘉善双飞润滑材料有限公司 | Three-layer composite material of shaft sleeve for oil pump and preparation method thereof |
| CN117447799A (en) * | 2023-12-26 | 2024-01-26 | 江西理工大学 | Self-lubricating layer and preparation method and application thereof |
| CN117447799B (en) * | 2023-12-26 | 2024-03-15 | 江西理工大学 | Self-lubricating layer and preparation method and application thereof |
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Application publication date: 20200221 |