CN112157860A - Method for manufacturing metal product coated by high polymer material - Google Patents
Method for manufacturing metal product coated by high polymer material Download PDFInfo
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- CN112157860A CN112157860A CN202010858678.9A CN202010858678A CN112157860A CN 112157860 A CN112157860 A CN 112157860A CN 202010858678 A CN202010858678 A CN 202010858678A CN 112157860 A CN112157860 A CN 112157860A
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- metal
- polymer material
- coated
- high polymer
- metal section
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
- B29C41/20—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. moulding inserts or for coating articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/02—Making uncoated products
- B21C23/04—Making uncoated products by direct extrusion
- B21C23/14—Making other products
- B21C23/142—Making profiles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/34—Component parts, details or accessories; Auxiliary operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/34—Component parts, details or accessories; Auxiliary operations
- B29C41/46—Heating or cooling
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/04—Measuring adhesive force between materials, e.g. of sealing tape, of coating
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a manufacturing method of a metal product coated by a high polymer material, which comprises the following steps: preparing a metal section material which meets the conductor tolerance specification by processing and forming the metal base material; coating a layer of high polymer material on the surface of the metal section; placing the metal section in a die, and controlling the thickness of the polymer material coated on the surface of the metal by controlling the size of the die; placing the metal section coated with the high polymer material obtained in the step into a cooling device for quenching, and taking out the metal section when the metal section coated with the high polymer material is cooled to the temperature of not higher than 40 ℃; and rolling the metal section covered with the high polymer material. The manufacturing method can effectively reduce the construction coating times and greatly reduce the production and manufacturing cost; the macromolecular material prepared by the preparation method has strong adhesive force between the macromolecular material and the metal base material in the metal product coated by the macromolecular material, and the performance of the finished product is better.
Description
Technical Field
The invention relates to the technical field of high-performance special polymer processing, in particular to a manufacturing method of a high-molecular material coated metal product.
Background
The special functional polymer includes, but is not limited to, polyetherimide PEI, high temperature nylon PA, polyphenylene sulfide PPS, polyimide PI, polyamideimide PAI, polytetrafluoroethylene PTFE, polyetheretherketone PEEK and other high polymer materials, and can be widely applied to aerospace, high-speed rail, automobiles, high-end electromechanics and other places requiring work in harsh environments due to the excellent performance of the polymer.
However, when the special functional polymer is coated on a metal product due to its own special chemical structure, the construction operability is poor, the construction process is complicated and the cost is high, or the material performance at the later stage is not satisfactory.
The common construction method of the special functional polymer comprises the following steps:
the polyimide PI construction scheme is a polyimide film winding method, namely, a layer of hot melt adhesive is coated on a polyimide film, and then the polyimide film composition is attached to a metal substrate in a winding-sintering mode. However, this method cannot be applied to a metal substrate having a complicated structure. Moreover, the polyimide film coated metal product prepared by the method has poor adhesion with a metal substrate, and cannot meet the application occasions that the finished product needs to be bent for use.
The polyimide PI construction scheme is a polyimide precursor coating method, namely, a polyimide precursor polyamic acid composition is coated on a metal base material, and then the metal base material is heated and cured. Polyimide is formed by curing a polyamic acid composition on a metal substrate, and the polyamic acid composition is prone to cause surface defects such as bubbles when the wet film thickness and the construction temperature curve are improperly controlled, thereby affecting the performance of a finished product.
Disclosure of Invention
The present invention is directed to a method for manufacturing a metal product coated with a polymer material, which solves one or more of the above-mentioned problems of the prior art.
The invention provides a manufacturing method of a metal product coated by a high polymer material, which comprises the following steps:
s1: preparing a metal section material which meets the conductor tolerance specification by processing and forming the metal base material;
s2: passing the metal section through a material tank filled with a polymer material in a molten state, so that the surface of the metal section is coated with a layer of polymer material;
s3: placing the metal section coated with the high polymer material in a mould, and controlling the thickness of the high polymer material coated on the surface of the metal by controlling the size of the mould;
s4: placing the metal section coated with the high polymer material obtained in the step S3 in a cooling device for quenching, and taking out the metal section when the metal section coated with the high polymer material is cooled to the temperature not higher than 40 ℃;
s5: and rolling the metal section covered with the high polymer material.
In some embodiments, the machining process in step S1 is selected from a metal melt hot extrusion process, a metal wire rod die extrusion process, or a wire cutting machine machining process.
In some embodiments, a metal melt hot extrusion process comprises: heating a metal ingot to a molten state, and forming the metal through hot extrusion equipment to enable the size of the metal to be consistent with the design size specification of a die; the metal wire rod die extrusion forming process comprises the following steps: a metal wire rod with a general specification sold in the market is trimmed by cold extrusion equipment and a die, and the size of the metal wire rod can be in accordance with the design size specification of the die; the machining and forming process of the wire cutting machine comprises the following steps: the metal section bar with the general specification sold in the market is processed into the size specification meeting the design and use requirements through the wire cutting and machining process.
In some embodiments, the method further comprises a surface degreasing-degreasing process after the machining and forming process step, specifically:
thermal degreasing: placing the metal section bar subjected to the machining and forming process in a hot degreasing tank for degreasing;
washing with water: washing the alkali liquor on the surface of the metal section with clear water;
acid washing: and (3) putting the material after water washing into a nitric acid and phosphoric acid solution, controlling the temperature to be 50-60 ℃, and soaking for 20-30 min.
In some embodiments, the metal substrate is selected from the group consisting of elemental metals or metal alloys.
In some embodiments, the elemental metal is selected from iron, aluminum, or copper.
In some embodiments, the metal alloy is selected from stainless steel.
In some embodiments, the polymeric material is selected from thermoplastic polymers.
In some embodiments, the thermoplastic polymer is selected from the group consisting of high temperature nylon PA, polyetherimide PEI, polyphenylene sulfide PPS, polyimide PI, polyamideimide PAI, polytetrafluoroethylene PTFE, polyetheretherketone PEEK, or mixtures thereof.
Wherein: the variety of the high polymer material is selected more, and the processing problem of the special functional polymer can be effectively solved.
In some embodiments, polyetherimide PEI-1000 is selected from SABIC corporation, model ULTEM 1000.
In some embodiments, polyimide PI-100 is selected from Nantong Bo-Union materials technology, Inc. model number BOIMID 100.
In some embodiments, polyetheretherketone KT-880P is selected from SOLVAY, model KT-880P.
In some embodiments, step S2 is specifically:
and (4) immersing the metal section bar prepared in the step (S1) in a trough containing the polymer material in a molten state, lifting, and repeating the operation until the polymer material in the molten state is dried, wherein the operation is repeated until the polymer material coated on the metal section bar reaches the required thickness.
In some embodiments, one or more polymer materials may be coated on the surface of the metal profile according to actual needs.
In some embodiments, the mold temperature in step S3 is 100 ℃ or higher.
In some embodiments, the metal structure surface of the metal profile prepared in step S1 is coated with a layer of high molecular polymer, and the shape of the metal structure surface is circular, square, rectangular or elliptical.
Wherein: a layer of high molecular polymer can be coated on various simple or complex metal structure surfaces, and the coating effect cannot be influenced by the shape of the metal structure surface.
In some embodiments, the thickness of the polymer material coated on the metal surface in step S3 can be flexibly adjusted according to the actual application, so as to control the thickness.
In some embodiments, the refrigeration device in step S4 is selected from a liquid coolant cooling device, a water cooled cooling device, or an air cooling device.
In some embodiments, the coolant consists of water, antifreeze selected from the group consisting of alcohol antifreeze, glycerol antifreeze, or glycol antifreeze, and additives.
Has the advantages that: according to the manufacturing method of the metal product coated with the high polymer material, disclosed by the embodiment of the invention, by adopting the technical scheme of the invention, metal product coatings of different high polymer materials can be prepared, and when the high polymer material coating layer is prepared, the construction coating times can be effectively reduced, and the production and manufacturing cost can be greatly reduced; the polymer material can be coated on the metal section with a complex structural surface, and the coating effect is not influenced by the structural form of the metal section; the polymer material prepared by the manufacturing method of the embodiment of the application has strong adhesive force between the polymer material and the metal base material in the metal product coated by the polymer material, and the performance of the finished product is better.
Detailed Description
The present invention will be further described with reference to the following examples. The following examples are only for illustrating the performance of the present invention more clearly and are not limited to the following examples.
Example 1
S1: a copper base material with the diameter specification of 3mm is extruded into a copper section with the diameter of 1mm through a mould with the size specification of 1mm after a surface degreasing-degreasing procedure by a metal melting hot extrusion molding process;
s2: enabling the copper section prepared in the step S1 to pass through a seal groove filled with polyetherimide PEI-1000 in a molten state, and coating a layer of polyetherimide PEI-1000 on the surface of the copper section, wherein the method specifically comprises the following steps:
immersing the copper section bar prepared in the step S1 in a sealing groove filled with polyetherimide PEI-1000 in a molten state, then lifting, and repeating the operation after the polyetherimide PEI-1000 in the molten state is dried until the polyetherimide PEI-1000 coated on the copper section bar in batch reaches the required thickness;
s3: placing the copper section coated with the polyetherimide PEI-1000 in a mould with the size specification of 1.01mm, controlling the temperature of the mould to be more than 100 ℃ to control the thickness of the polyetherimide PEI-1000 coated on the surface of the copper section to be 5 mu m, and obtaining the copper section with the diameter of 1.01 mm;
s4: placing the copper section coated with polyetherimide PEI-1000 obtained in S3 in cooling liquid for quenching, and taking out the metal section when the metal section coated with the high polymer material is cooled to the temperature not higher than 40 ℃;
s5: and (3) winding a copper section coated with polyetherimide PEI-1000.
Example 2
S1: an aluminum substrate with the diameter specification of 9.5mm is extruded into an aluminum profile with the specification of 22 x 2.5mm through a die with the dimension specification of 22 x 2.5mm after a surface degreasing-degreasing procedure by a metal melting hot extrusion molding process;
s2: enabling the aluminum profile prepared in the step S1 to pass through a sealing groove filled with polyimide PI-100 in a molten state, and coating a layer of polyimide PI-100 on the surface of the aluminum profile in a batch mode, wherein the specific steps are as follows:
immersing the aluminum profile prepared in the step S1 in a sealing groove filled with polyimide PI-100 in a molten state, then lifting, repeating the operation after the polyimide PI-100 in the molten state is dried, and circulating the operation until the polyimide PI-100 coated on the aluminum profile reaches the required thickness;
s3: placing the aluminum profile coated with the polyimide PI-100 in a die with the dimension specification of 22.05 multiplied by 2.55mm, and controlling the temperature of the die to be more than 100 ℃ to obtain the aluminum profile with the dimension specification of 22.05 multiplied by 2.55 mm; passing the aluminum profile after passing through the die into a sealing groove filled with molten polyetheretherketone KT-880P, so that a layer of polyetheretherketone KT-880P is coated on the surface of the aluminum profile, then placing the aluminum profile into a die with the dimension specification of 22.10 multiplied by 2.60mm, and controlling the temperature of the die to be more than 100 ℃ to obtain the aluminum profile with the extrusion specification of 22.10 multiplied by 2.60 mm;
s4: placing the aluminum profile coated with polyimide PI-100 and polyetheretherketone KT-880P obtained in S3 in an air cooling device for quenching, and taking out the aluminum profile when the metal profile coated with the high polymer material is cooled to a temperature not higher than 40 ℃;
s5: and rolling aluminum profiles coated with polyimide PI-100 and poly (ether-ketone) KT-880P in batches.
Performance testing
1. Method for testing thickness of coated high polymer material
Using a micrometer, the substrate was tested for dimensional specification L0 prior to coating. After the construction, the dimensional specification at the same position is tested again and is marked as L1, and the thickness of the polymer material coating layer is marked as (L1-L0)/2.
2. Method for testing adhesive force between high polymer material and metal base material
Bending and deforming the metal section coated with the high polymer material, wherein the deformation angle is not less than 60 ℃. The polymer material was evaluated as "good" without cracks and expansion, and as "poor" otherwise.
The metal profiles coated with the polymer material of examples 1 and 2 were subjected to performance tests, and the test results are shown in table 1.
TABLE 1
As can be seen from table 1, the thickness of the polymer material coated on the surface of the metal substrate in the metal profiles coated with the polymer material prepared in the embodiments 1 and 2 of the present invention can reach the precision of micron level; meanwhile, the adhesive force between the polymer material and the metal base material is good, namely when the metal section coated with the polymer material is subjected to bending deformation (the deformation angle is not less than 60 degrees), the polymer material is free from cracks and expansion.
In summary, according to the manufacturing method of the metal product coated with the polymer material provided by the embodiment of the invention, by adopting the technical scheme of the invention, metal product coatings of different polymer materials can be prepared, and when the polymer material coating layer is prepared, the construction coating times can be effectively reduced, and the production and manufacturing cost can be greatly reduced; the polymer material can be coated on the metal section with a complex structural surface, and the coating effect is not influenced by the structural form of the metal section; the polymer material prepared by the manufacturing method of the embodiment of the application has strong adhesive force between the polymer material and the metal base material in the metal product coated by the polymer material, and the performance of the finished product is better.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the inventive concept of the present invention, and these should also be construed as being within the scope of the present invention.
Claims (10)
1. A manufacturing method of a metal product coated by a high polymer material is characterized by comprising the following steps:
s1: preparing a metal section material which meets the conductor tolerance specification by processing and forming the metal base material;
s2: passing the metal section through a material tank filled with a polymer material in a molten state, so that the surface of the metal section is coated with a layer of polymer material;
s3: placing the metal section coated with the high polymer material in a mould, and controlling the thickness of the high polymer material coated on the surface of the metal by controlling the size of the mould;
s4: placing the metal section coated with the high polymer material obtained in the step S3 in a cooling device for quenching, and taking out the metal section when the metal section coated with the high polymer material is cooled to the temperature not higher than 40 ℃;
s5: and rolling the metal section covered with the high polymer material.
2. The method as claimed in claim 1, wherein the step S1 is performed by a process selected from a group consisting of a metal melt extrusion process, a metal wire mold extrusion process, and a wire cutting machine process.
3. The method as claimed in claim 2, wherein the metal melt hot extrusion molding process comprises: heating a metal ingot to a molten state, and forming the metal through hot extrusion equipment to enable the size of the metal to be consistent with the design size specification of a die; the metal wire rod die extrusion forming process comprises the following steps: a metal wire rod with a general specification sold in the market is trimmed by cold extrusion equipment and a die, and the size of the metal wire rod can be in accordance with the design size specification of the die; the machining and forming process of the wire cutting machine comprises the following steps: the metal section bar with the general specification sold in the market is processed into the size specification meeting the design and use requirements through the wire cutting and machining process.
4. The method according to claim 2, wherein the metal substrate is selected from a group consisting of elemental metals and metal alloys, preferably the elemental metals are selected from iron, aluminum and copper, and preferably the metal alloys are selected from stainless steel.
5. The method of claim 1, wherein the polymeric material is selected from thermoplastic polymers selected from the group consisting of high temperature nylon (PA), Polyetherimide (PEI), polyphenylene sulfide (PPS), Polyimide (PI), polyamide imide (PAI), Polytetrafluoroethylene (PTFE), Polyetheretherketone (PEEK), and combinations thereof.
6. The method according to claim 1, wherein step S2 is specifically as follows:
and (4) immersing the metal section bar prepared in the step (S1) in a trough containing the polymer material in a molten state, lifting, and repeating the operation until the polymer material in the molten state is dried, wherein the operation is repeated until the polymer material coated on the metal section bar reaches the required thickness.
7. The method as claimed in claim 6, wherein one or more polymeric materials are coated on the surface of the metal profile according to actual requirements.
8. The method for manufacturing a high polymer material-coated metal product according to claim 6 or 7, wherein the metal structure surface of the metal profile prepared in step S1 is coated with a layer of high polymer, and the shape of the metal structure surface is circular, square, rectangular or elliptical, without any particular limitation.
9. The method as claimed in claim 1, wherein the cooling device in step S4 is selected from a liquid cooling device, a water cooling device or an air cooling device.
10. The method according to claim 9, wherein the coolant comprises water, an antifreeze and an additive, and the antifreeze is selected from an alcohol antifreeze, a glycerin antifreeze and a glycol antifreeze.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010858678.9A CN112157860A (en) | 2020-08-24 | 2020-08-24 | Method for manufacturing metal product coated by high polymer material |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010858678.9A CN112157860A (en) | 2020-08-24 | 2020-08-24 | Method for manufacturing metal product coated by high polymer material |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113043612A (en) * | 2021-04-12 | 2021-06-29 | 衢州捷鑫化工设备有限公司 | Polymer-coated metal stud and processing technology thereof |
| CN114985701A (en) * | 2022-06-15 | 2022-09-02 | 安徽金铂新材料科技有限公司 | Preparation method of new energy automobile battery box end plate aluminum profile |
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| Publication number | Priority date | Publication date | Assignee | Title |
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