CN106714487A - Magnesium alloy communication equipment - Google Patents
Magnesium alloy communication equipment Download PDFInfo
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- CN106714487A CN106714487A CN201510791304.9A CN201510791304A CN106714487A CN 106714487 A CN106714487 A CN 106714487A CN 201510791304 A CN201510791304 A CN 201510791304A CN 106714487 A CN106714487 A CN 106714487A
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- magnesium alloy
- communication equipment
- elastic coating
- coating
- elastic
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- 229910000861 Mg alloy Inorganic materials 0.000 title claims abstract description 240
- 238000004891 communication Methods 0.000 title claims abstract description 78
- 238000007789 sealing Methods 0.000 claims abstract description 29
- 238000000576 coating method Methods 0.000 claims description 133
- 239000011248 coating agent Substances 0.000 claims description 132
- 239000000126 substance Substances 0.000 claims description 19
- 239000000203 mixture Substances 0.000 claims description 15
- 229920000728 polyester Polymers 0.000 claims description 14
- 238000012856 packing Methods 0.000 claims description 10
- 239000004593 Epoxy Substances 0.000 claims description 7
- 229920002396 Polyurea Polymers 0.000 claims description 7
- PRPAGESBURMWTI-UHFFFAOYSA-N [C].[F] Chemical compound [C].[F] PRPAGESBURMWTI-UHFFFAOYSA-N 0.000 claims description 7
- 238000009413 insulation Methods 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 claims 1
- 229910052751 metal Inorganic materials 0.000 abstract description 41
- 239000002184 metal Substances 0.000 abstract description 38
- 239000011777 magnesium Substances 0.000 description 47
- 239000010410 layer Substances 0.000 description 44
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 43
- 229910052749 magnesium Inorganic materials 0.000 description 43
- 238000000034 method Methods 0.000 description 33
- 239000000758 substrate Substances 0.000 description 30
- 238000005260 corrosion Methods 0.000 description 29
- 230000002421 anti-septic effect Effects 0.000 description 21
- 230000007797 corrosion Effects 0.000 description 19
- 238000006243 chemical reaction Methods 0.000 description 14
- 239000000463 material Substances 0.000 description 14
- 238000004519 manufacturing process Methods 0.000 description 11
- 150000002739 metals Chemical class 0.000 description 11
- 239000000956 alloy Substances 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 8
- 239000003792 electrolyte Substances 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 6
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 6
- 229910045601 alloy Inorganic materials 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 238000006056 electrooxidation reaction Methods 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 238000003466 welding Methods 0.000 description 5
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 238000005266 casting Methods 0.000 description 4
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 4
- 239000010931 gold Substances 0.000 description 4
- 229910052737 gold Inorganic materials 0.000 description 4
- 229910052755 nonmetal Inorganic materials 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000004411 aluminium Substances 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
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- 239000000243 solution Substances 0.000 description 3
- 240000006409 Acacia auriculiformis Species 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
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- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000012948 isocyanate Substances 0.000 description 2
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- 238000002360 preparation method Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000000565 sealant Substances 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910001141 Ductile iron Inorganic materials 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- -1 aluminium Gold Chemical compound 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
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- 238000010276 construction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
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- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
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- 201000004792 malaria Diseases 0.000 description 1
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- 229910052759 nickel Inorganic materials 0.000 description 1
- 150000002843 nonmetals Chemical class 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
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- 238000005498 polishing Methods 0.000 description 1
- 229920013657 polymer matrix composite Polymers 0.000 description 1
- 239000011160 polymer matrix composite Substances 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
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- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003856 thermoforming Methods 0.000 description 1
- MEYZYGMYMLNUHJ-UHFFFAOYSA-N tunicamycin Natural products CC(C)CCCCCCCCCC=CC(=O)NC1C(O)C(O)C(CC(O)C2OC(C(O)C2O)N3C=CC(=O)NC3=O)OC1OC4OC(CO)C(O)C(O)C4NC(=O)C MEYZYGMYMLNUHJ-UHFFFAOYSA-N 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/04—Metal casings
-
- 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
- B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
-
- 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
-
- 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
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
- B32B3/08—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts
-
- 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
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
-
- 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
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/08—Interconnection of layers by mechanical means
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/0217—Mechanical details of casings
-
- 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
- B32B2250/00—Layers arrangement
- B32B2250/40—Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
-
- 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
- B32B2255/00—Coating on the layer surface
-
- 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
- B32B2255/00—Coating on the layer surface
- B32B2255/06—Coating on the layer surface on metal layer
-
- 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
- B32B2255/00—Coating on the layer surface
- B32B2255/26—Polymeric coating
-
- 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
- B32B2255/00—Coating on the layer surface
- B32B2255/28—Multiple coating on one surface
-
- 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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Mechanical Engineering (AREA)
- Laminated Bodies (AREA)
Abstract
The invention provides magnesium alloy communication equipment. A casing of the communication equipment is composed of at least two metal structural members connected with each other, at least one of the metal structural member is a magnesium alloy structural member, the surface where the magnesium alloy structural member makes contact with other metal structural members comprises an elastic sealing layer, the elastic sealing layer is insulated, and the tensile extension rate of the layer is greater than 100%. The anticorrosion performance of the magnesium alloy communication equipment is improved.
Description
Technical field
The present embodiments relate to technical field of metal anti-corrosion, more particularly to a kind of magnesium hop communication equipment.
Background technology
Magnesium is a kind of less metal of relative density, therefore, the magnesium alloy containing magnesium is a kind of extremely light conjunction
Golden material.Because magnesium alloy has specific strength and specific stiffness all very high, conduct electricity very well, magnetic shield performance
Excellent, cutting, polishing, processing characteristics are excellent, it is easy to which casting and welding, cryogenic property are good, superconduction
Good with hydrogen storage property, anti-high energy particle penetration capacity is strong, and shock resistance shock load is big and damping property is good, easily
The advantages of recovery and recovery utilization rate are high, and content of the magnesium in the earth's crust is 2.35%, therefore use magnesium
Alloy has boundless application prospect as structural material.
Due to the special nature of magnesium, magnesium is caused to be chemism highest metallic element in all industrial alloys.
Therefore magnesium alloy is also vulnerable to corrosion in an atmosphere.Magnesium alloy corrosion resistance in an atmosphere is mainly by rotten
The oxide-film for being formed is lost, but oxide-film is porous and loose, and corrosion is easily produced again.Further, since
The normal electrode of magnesium is -2.37 volts (Volt, V), and its current potential is at a fairly low in typical media, therefore,
When magnesium alloy is contacted with other metals, there is electrochemical corrosion, electricity generally as anode and other metals
The negative electrode of chemical attack can be the dissimilar metal, or magnesium conjunction for having direct external contact with magnesium alloy
The second phase or impurities phase inside gold.Expand the use scope of magnesium alloy, give full play to its superior function,
Must just solve the problems, such as that its is perishable.
With the development of the communication technology, the construction demand of communication products is more and more, especially in future
Under 5th third-generation mobile communication (5th Generation, 5G) scene, the super-intensive networking of one of key technology
It is required that the more cells of deployment, that is, need to dispose more communication equipments.These communication equipments one
As be required for being deployed in the outdoor or more hidden place in interior, in order to ensure the stabilization of network, communication sets
Anti- (mould proof, moisture proof, Defend salt fog) the performance quality of standby three will be its important indicator.Though magnesium alloy
So there is above-mentioned lot of advantages, but if being applied in a communications device, it is necessary to solve its perishable
The problem of erosion.
The antiseptic property for improving magnesium alloy mainly can be several using base material anti-corrosion, chemical conversion, face coat
The method of kind, but base material preservative treatment high cost is carried out to magnesium alloy, process anti-using chemical conversion process
Rotten performance is not good, therefore is presently mainly to be improved using the method in Mg alloy surface coating organic coating
The antiseptic property of magnesium alloy.
The structure of communication products is substantially with metal shell at present, and safety is various logical in metal shell
Letter device, is typically additionally provided with external heater outside metal shell.Wherein constitute multiple metal knots of metal shell
Need to be connected by connected modes such as screw, riveting, welding between component, in these connectors or welding
Joint, in fact it could happen that narrow gap, these gaps are enough to make electrolyte enter in gap, and the time is long
Even if rear Mg alloy surface has organic coating, electrolyte is likely to that corrosion can be produced to magnesium alloy substrates.
Once magnesium alloy materials are collided with, then the organic coating of surface coating is likely to come off, and causes magnesium
Alloy base material is in air so as to be corroded.
In sum, the antiseptic property of magnesium alloy materials how is improved, has been by magnesium alloy materials application
Bottleneck when communication products.
The content of the invention
The embodiment of the present invention provides a kind of magnesium hop communication equipment, the anti-corrosion for improving magnesium alloy communication equipment
Performance.
First aspect provides a kind of magnesium alloy communication equipment, and the shell of the communication equipment is by least two phases
The hardware composition for connecting, wherein at least one hardware is magnesium alloy structural part, described
Magnesium alloy structural part includes elastic sealing layer with the face that other hardwares contact with each other, and the elasticity is close
Sealing insulate and stretching elongation is more than 100%.
Magnesium hop communication equipment provided in an embodiment of the present invention, by magnesium alloy structural part and other metal knots
The face of component contact sets elastic sealing layer, wherein, the stretching elongation of the elastic sealing layer is more than 100%,
Because elastic sealing layer can produce deformation when being squeezed, can prevent the magnesium of magnesium hop communication equipment from closing
Golden structural member produces gap with other hardwares in junction, so as to improve magnesium alloy communication equipment
Antiseptic property.
With reference in a first aspect, in first aspect in the first possible implementation, the elastic sealing layer
Elasticity including being coated on the surface contacted with each other with other hardwares on the magnesium alloy structural part is applied
Layer；
Or the elastic sealing layer includes being coated with the packing ring of elastic coating.
With reference to first aspect or first aspect the first possible implementation, can in second of first aspect
In the implementation of energy, at least two hardware is connected by fastener, each magnesium alloy knot
The face that component is contacted with the fastener includes dielectric resilience pad, and the surface of the dielectric resilience pad applies
Elastic coating is covered with, the stretching elongation of the elastic coating is more than 100%.
Because at least two hardwares of magnesium alloy communication equipment are connected by fastener, and it is tight
Firmware is typically also metal material, then elastomeric pad is set between fastener and magnesium alloy structural part,
Because cushion can produce deformation when being squeezed, the magnesium alloy knot of magnesium hop communication equipment can be prevented
Component produces gap with fastener in junction, so as to improve the antiseptic property of magnesium alloy communication equipment.
With reference to first aspect to any one possible realization side in second possible implementation of first aspect
Formula, in first aspect in the third possible implementation, the surface of the magnesium alloy structural part is coated with
Elastic coating, the stretching elongation of the elastic coating is more than 100%.
Because magnesium alloy communication equipment is inevitably knocked during transport, installation, use
Touch, therefore, if all coating elastic coating on the magnesium alloy structural part surface of magnesium alloy communication equipment, then
When magnesium alloy structural part is collided with, elastic coating can produce deformation and avoid breakage, so as to improve
The antiseptic property of magnesium alloy communication equipment.
The third possible implementation with reference to first aspect, in the 4th kind of possible realization side of first aspect
In formula, the surface of the magnesium alloy structural part also includes surface pretreatment layer, and the surface pretreatment layer is
Chemical composition coating, the surface pretreatment layer is located at the surface of the magnesium alloy structural part and the elasticity is applied
Between layer.
With reference to first aspect the first to any one possible realization side in the 4th kind of possible implementation
Formula, in the 5th kind of possible implementation of first aspect, the thickness of the elastic coating is more than 50 microns.
With reference to first aspect the first to any one possible realization side in the 5th kind of possible implementation
Formula, in the 6th kind of possible implementation of first aspect, the main component of the elastic coating includes gathering
At least one in urethane, pure polyester, epoxy polyester, polyureas, fluorine carbon, acrylic acid.
Second aspect provides a kind of magnesium alloy parts including elastic coating, including：
Magnesium alloy substrates and the elastic coating for being coated on the magnesium alloy substrates surface, the elastic coating are exhausted
Edge and stretching elongation be more than 100%.
With reference to second aspect, in second aspect in the first possible implementation, the magnesium alloy substrates
Surface also includes surface pretreatment layer, and the surface pretreatment layer is chemical composition coating, and the surface is located in advance
Reason layer is located between the substrate surface and the elastic coating.
With reference to second aspect or second aspect the first possible implementation, can in second of second aspect
In the implementation of energy, the thickness of the elastic coating is more than 50 microns.
With reference to second aspect to any one possible realization side in second possible implementation of second aspect
Formula, in second aspect in the third possible implementation, the main component of the elastic coating includes gathering
At least one in urethane, pure polyester, epoxy polyester, polyureas, fluorine carbon, acrylic acid.
The third aspect provides a kind of manufacture method of the magnesium alloy parts including elastic coating, including：
Shaping is processed to raw material magnesium alloy, the magnesium alloy substrates of required shape are obtained；
Elastic coating is coated on the magnesium alloy substrates, the elastic coating stretching elongation is more than
100%.
It is described to be closed in the magnesium in the third aspect in the first possible implementation with reference to the third aspect
Before coating elastic coating on auri material, also include：
Chemical conversion treatment is carried out to the magnesium alloy substrates, on the magnesium alloy substrates Surface Creation surface
Pretreatment layer, the surface pretreatment layer is chemical composition coating, and the surface pretreatment layer is located at the base
Between material surface and the elastic coating.
With reference to the third aspect or the third aspect the first possible implementation, can in second of the third aspect
In the implementation of energy, the thickness of the elastic coating is more than 50 microns.
With reference to the third aspect to any one possible realization side in second possible implementation of the third aspect
Formula, in the third aspect in the third possible implementation, the main component of the elastic coating includes gathering
At least one in urethane, pure polyester, epoxy polyester, polyureas, fluorine carbon, acrylic acid.
Magnesium alloy parts provided in an embodiment of the present invention, by coating elastic coating on magnesium alloy substrates,
Wherein, the stretching elongation of the elastic coating is more than 100%, because elastic coating is being squeezed or is colliding with
When can produce deformation, can both prevent magnesium alloy parts junction produce gap, can be closed in magnesium again
Elastic coating is prevented from or mitigated when metal parts are collided with to come off or damaged, so as to improve the anti-of magnesium alloy
Rotten performance.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to reality
The accompanying drawing to be used needed for example or description of the prior art is applied to be briefly described, it should be apparent that, under
Accompanying drawing in the description of face is some embodiments of the present invention, for those of ordinary skill in the art,
On the premise of not paying creative labor, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the content ratio figure of essential element in the earth's crust；
Fig. 2 is the schematic diagram of the electrochemical corrosion of magnesium alloy；
Fig. 3 is the structural representation of magnesium alloy communications device embodiments one provided in an embodiment of the present invention；
Fig. 4 is the structural representation of magnesium alloy communications device embodiments two provided in an embodiment of the present invention；
The manufacture method of the magnesium alloy parts including elastic coating that Fig. 5 is provided for present example；
Fig. 6 is the structure of the magnesium alloy parts embodiment one including elastic coating provided in an embodiment of the present invention
Schematic diagram；
Fig. 7 is the structure of the magnesium alloy parts embodiment two including elastic coating provided in an embodiment of the present invention
Schematic diagram.
Specific embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with this hair
Accompanying drawing in bright embodiment, is clearly and completely described to the technical scheme in the embodiment of the present invention,
Obviously, described embodiment is a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained under the premise of creative work is not made
The all other embodiment for obtaining, belongs to the scope of protection of the invention.
Magnesium is a kind of metallic element, and it is rich in the earth's crust, and Fig. 1 is the content ratio of essential element in the earth's crust
Illustration, it can be seen that magnesium is the element containing flow control eight in the earth's crust, its content in the earth's crust is about
Account for 2.35%.Magnesium alloy is the alloy for adding other elements composition as base with magnesium, the relative density of magnesium alloy
About 1.8g/cm3, it is the 2/3 of aluminium, the 1/4 of zinc, the 1/4 of iron.And the specific strength of magnesium alloy is closed than aluminium
Gold and the steel capital are high, and specific stiffness has no significant difference with aluminium alloy and steel.Therefore magnesium alloy is most light at present
Structural metallic materials.
The density of magnesium alloy is small, and relative mechanical intensity is high, is primarily used for aviation and rocketry field.
Further, since its fusing point is low, thermoforming is easily carried out, energy consumption is again low, as structural member light weight, subtracts
Shock resistance is good again for shake, and Cutting free processing, thermal conductivity is good.Electromagnetic shielding capability is strong, and oxidizable
Coloring, can good decorative property.Therefore automobile making, Aeronautics and Astronautics, communication, the vehicles, electrical equipment,
The fields such as weaving, printing, machine-building, optical-mechanical, electrochemical protection obtain more and more widely should
With.Because its reproducibility is additionally operable to by force deoxidation, refinement of titanium of steel etc..The middle warm nature of magnesium alloy can be good, can
For the engineering plastics and polymer matrix composites that are used in substitution aircraft and guided missile.Magnesium alloy is used for a long time
In manufacture military equipment, such as tent frames, mortar seat and tub.Pyrotechnics industry is magnesium alloy
The first industrial application.For manufacturing illuminating flare, high-energy fuel, firebomb in the night sky
Deng firearm.In recent years, magnesium alloy is received in the aspect development and application such as auto industry, motorcycle, electronic product
Greatly paid close attention to countries in the world.According to statistics, the world have 52% magnesium be used for aluminium alloying, 14% magnesium use
The deoxidization desulfuration in steel industry, has 13% magnesium for manufacturing diecast magnesium alloy, and 7% is used for chemistry and electrification
Industrial department is learned, 5% is used to produce spheroidal graphite cast-iron, and 3%, other application are accounted for for reduce the metals such as titanium
Account for 6%.
But because magnesium is chemism highest metallic element in all industrial alloys, therefore magnesium alloy is very
Easily it is corroded.Expand the range of application of magnesium alloy, give full play to the superior function of magnesium alloy, magnesium is closed
The anti-corrosion of gold is one of very important technology in magnesium alloy application.
The corrosion of magnesium alloy is mainly electrochemical corrosion and galvanic corrosion, and wherein electrochemical corrosion is due to magnesium
Contacted with water or aqueous vapor, form micro cell environment and produce.Due to the difference of corrosion potential, cause same
The local corrosion of dissimilar metal contact, is exactly galvanic corrosion in one medium.Two kinds of metals constitute macro cell,
Galvanic Current is produced, increases current potential relatively low metal (anode) dissolution velocity, current potential metal higher
(negative electrode) dissolution velocity is reduced.Because the electrode potential of magnesium is very low, and usually contained in magnesium alloy more
Electrode potential heavy metal (such as Fe, Ni, Cu etc.) higher, and magnesium alloy is in actual use
Often contacted with other high potential metals (such as steel, aluminium etc.), so as to be easy to galvanic corrosion,
Therefore, galvanic corrosion is one of topmost Corrosion Types of magnesium alloy.
Mainly there are base material anti-corrosion, chemical conversion, several means of face coat for the anti-corrosion of magnesium alloy at present.
Wherein base material anti-corrosion is the magnesium alloy by improving the purity of magnesium alloy and exploitation new component, or by fast
Fast solidifying process improves the antiseptic property of magnesium alloy.But due to the self-characteristic of magnesium, using base material anti-corrosion
Raising to magnesium alloy antiseptic property is little.
Chemical conversion process is itself chemical characteristic for using magnesium, when magnesium alloy is exposed in dry air,
Its surface can form one layer of natural oxide film, and this tunic is very stable when no water is contacted, but once aoxidizes
Film is contacted with the aqueous vapor in water or air, will form micro cell environment, produces more serious electrochemistry rotten
Erosion.In electrochemical corrosion, following reaction can be produced：Mg+2H2O=Mg (OH)2+H2.Due in reality
In the use environment of border, magnesium alloy parts or the magnesium alloy product being made of magnesium alloy parts are likely to connect
Water or malaria are contacted, therefore, the corrosion of magnesium alloy can not be avoided using chemical conversion process.
Fig. 2 is the schematic diagram of the electrochemical corrosion of magnesium alloy.It can be seen that there is it in working as magnesium alloy
His metal (in figure by taking iron (Fe) as an example), and magnesium alloy contact electrolyte, then magnesium will as anode,
Other metals form micro cell environment as negative electrode.Produce above-mentioned chemical reaction.
Current more effective magnesium alloy anti-corrosion method is to coat organic coating, organic painting on the surface of magnesium alloy
Layer has various advantages such as insulation, anti-corrosion, heat-resisting, moistureproof.
But magnesium alloy parts are typically all to be linked together using modes such as screw, riveting, welding,
When being attached to magnesium alloy parts using aforesaid way, organic coating is easy to come off, in addition, magnesium is closed
When being collided with, the organic coating on surface is also easy to come off metal parts, so as to cause magnesium alloy to be subject to
Corrosion.
In the communications field, in view of magnesium alloy is at aspects such as weight, intensity, electric property, processing characteristicies
Premium properties, therefore can be by magnesium alloy application in a communications device, as the structural member of communication equipment.
Usually, the structural member of communication equipment is exactly its shell.
With the development of the communication technology, mobile communication has stepped into forth generation mobile communication (4th
Generation, 4G) epoch, and progressively to 5G evolution.In order to improve network capacity, in 5G technologies
In, one of ultra dense concentrated-distributed key technology of cell.And the super-intensive distribution of cell needs deployment more
Communication equipment, particularly micro-base station, femto base station, Remote Radio Unit (Radio Remote Unit,
The small communication devices such as RRU).These small communication devices are typically deployed in kerbside, building interlayer
Etc., environment may be relatively severe, is vulnerable to corrosion.And if using magnesium alloy as communication equipment structure
Part, then how to improve the antiseptic property of magnesium alloy, is exactly improved the communication equipment life-span, and saving is safeguarded into
This key technology.
The embodiment of the present invention provides a kind of magnesium hop communication equipment, and at least a portion of its shell uses magnesium alloy
It is made, elastic sealing layer is set on the face that magnesium alloy is contacted with other metals, because elastic sealing layer exists
Deformation can be produced after receiving extruding, so that the face that magnesium alloy is contacted with other metals does not have gap, so that
Improve the antiseptic property of magnesium alloy communication equipment.
Fig. 3 is the structural representation of magnesium alloy communications device embodiments one provided in an embodiment of the present invention, such as
Shown in Fig. 3, the magnesium alloy communication equipment that the present embodiment is provided includes two Structure of magnesium alloy of interconnection
Part 31 and hardware 32.Hardware 32 can be made up of magnesium alloy, it is also possible to be closed by demagging
Other metals beyond gold are made.
Magnesium alloy structural part 31 and hardware 32 are linked together by fastener 33.Magnesium alloy knot
The face that component 31 and hardware 32 contact with each other includes elastic sealing layer 34, elastic sealing layer 34
Insulate and stretching elongation is more than 100%.
Due to the flexible sealant 34 of mask that magnesium alloy structural part 31 and hardware 32 contact with each other,
And the stretching elongation of elastic sealing layer 34 is more than 100%, then when magnesium alloy structural part 31 and metal knot
After component 32 is connected firmly, elastic sealing layer 34 will be squeezed and produce deformation.Elastic sealing layer 34
The gap in the face that magnesium alloy structural part 31 and hardware 32 will be contacted with each other after deformation is produced to fill out
It is full of so that cannot be introduced into magnesium alloy structural part 31 and hardware 32 comprising electrolyte solution
The face for contacting with each other, is closed due to the gap that electrolyte enters between hardware so as to avoid to magnesium
The corrosion that metal parts 31 are produced.
Elastic sealing layer 34 can be the elastic coating for being coated on the surface of magnesium alloy structural part 31.Closed in magnesium
The method of golden structural member surface coating elastic coating will be described in detail in embodiment below.If in Structure of magnesium alloy
The table of part 31 all coats elastic coating, then when magnesium alloy parts 31 are connected with other hardwares 32
When, the elastic coating on face contacted with hardware 32 on magnesium alloy structural part 31 will form elasticity
Sealant 34.If in fact, the face for only being contacted with each other in magnesium alloy structural part 31 and hardware 32
Upper coating elastic coating, it is also possible to form elastic sealing layer 34, and without the table in magnesium alloy parts 31
Face all coats elastic coating.If but all coat elastic coating on the surface of magnesium alloy 31, then except can
Formed outside elastic sealing layer 34 between magnesium alloy structural part 31 and hardware 32, additionally it is possible to make
Whole magnesium alloy structural part 31 all has more preferable antiseptic property.In order to ensure the anti-of magnesium alloy communication equipment
Rotten performance, the thickness of the elastic coating on magnesium alloy structural part 31 can be more than 50 microns.
Meanwhile, all coat elastic coating on the surface of magnesium alloy structural part 31, then set in magnesium alloy communication
When standby magnesium alloy structural part 31 is collided with, elastic coating can equally produce deformation, and difficult for drop-off,
So as to be also the antiseptic property that improve magnesium alloy communication equipment.In magnesium alloy communication equipment, Hen Duodou
Need to set jagged fin on surface, these fin are made of magnesium alloy and can reduce communication
The weight of equipment, while heat dispersion is improved, but fin can influence magnesium alloy to communicate if corrosion is received
The heat dispersion of equipment, therefore can all coat elastic painting on the surface of the fin being made of magnesium alloy
Layer.
Elastic sealing layer 34 can also be the packing ring for being coated with elastic coating, that is, in magnesium alloy structural part
One packing ring is additionally set between 31 and hardware 32, elastic coating is coated with the packing ring.
The method that elastic coating is coated on packing ring will be described in detail in embodiment below, and the stretching of the elastic coating is extended
Rate is more than 100%.In order to ensure the antiseptic property of magnesium alloy communication equipment, the thickness of the elastic coating on packing ring
Degree can be more than 50 microns.
It should be noted that the magnesium alloy communication equipment that the present embodiment is provided is only with two gold of interconnection
Illustrated as a example by category structural member, but magnesium alloy communication equipment provided in an embodiment of the present invention is not limited,
When more than two hardwares are connected with each other, as long as in each magnesium alloy structural part and other metal knots
Elastic sealing layer is set on the face that component contacts with each other.
Magnesium hop communication equipment provided in an embodiment of the present invention, by magnesium alloy structural part and other metal knots
The face of component contact sets elastic sealing layer, wherein, the stretching elongation of the elastic sealing layer is more than 100%,
Because elastic sealing layer can produce deformation when being squeezed, can prevent the magnesium of magnesium hop communication equipment from closing
Golden structural member produces gap with other hardwares in junction, so as to improve magnesium alloy communication equipment
Antiseptic property.
Fig. 4 is the structural representation of magnesium alloy communications device embodiments two provided in an embodiment of the present invention, such as
Shown in Fig. 4, the magnesium alloy communication equipment that the present embodiment is provided is gone back on the basis of embodiment illustrated in fig. 3
Including elastomeric pad 35, elastomeric pad 35 is arranged at what fastener 33 was contacted with magnesium alloy structural part 31
Face.
The surface of elastomeric pad 35 is coated with elastic coating, and the stretching elongation of the elastic coating is more than
100%.The method that elastic coating is coated on elastomeric pad 35 will be described in detail in embodiment below.Due to
When fixing magnesium alloy structural part 31 and hardware 32 using fastener 33, fastener 33 is closed with magnesium
Gap is there may be between golden structural member 31, causes electrolyte to pass through fastener 33 and magnesium alloy structural part
Gap between 31 enters in magnesium alloy communication equipment, and corrosion is caused to magnesium alloy communication equipment.
In conventional metals equipment, non-metal base pad or Metal Substrate pad are used on fastener, wherein non-
There is degradation risk in Metal Substrate pad, and non-metal base pad mechanical property cannot meet fastening high in outdoor
The use requirement of torque, the risk that there is cracking.Conventional metals base wad piece, poor sealing performance, extraneous electricity
Solution matter is accessible to the position that fastener is contacted with hardware, cause metal erosion.In application magnesium
In the magnesium alloy communication equipment of alloy structure part, if using tradition between fastener and magnesium alloy structural part
Non-metal base pad or Metal Substrate pad, then can equally influence Structure of magnesium alloy in magnesium alloy communication equipment
The antiseptic property of part.
And after being provided with the elastomeric pad 35 that the present embodiment is provided, magnesium alloy is fixed when fastener 33 is used
When structural member 31 and hardware 32, by the elastic coating on elasticity of compression pad 35 so that elasticity
Coating is deformed upon, and gap occurs so as to avoid between fastener 33 and magnesium alloy structural part 31,
It is prevented that electrolyte enters magnesium alloy communication equipment, the antiseptic property of magnesium alloy communication equipment is improve,
Solve the problems, such as that non-metal base pad is not ageing-resistant.Fastener 33 after tightening elastic coating elasticity delay
The ability of punching can solve the problems, such as that mechanical property is not enough, elastomeric pad 35 is not ftractureed.While fastener
33 after tightening elastic coating deform, fastener 33 and magnesium alloy structural part 31 are sealed well
Between gap, solve the problems, such as the poor sealing performance of Metal Substrate pad.
It should be noted that the present embodiment only enters so that fastener 33 is contacted with magnesium alloy structural part 31 as an example
Explanation is gone, in order to ensure the antiseptic property of magnesium alloy communication, has been closed in each magnesium of magnesium alloy communication equipment
The face that golden structural member is contacted with fastener, should all set elastomeric pad.
Because at least two hardwares of magnesium alloy communication equipment are connected by fastener, and it is tight
Firmware is typically also metal material, then elastomeric pad is set between fastener and magnesium alloy structural part,
Because cushion can produce deformation when being squeezed, the magnesium alloy knot of magnesium hop communication equipment can be prevented
Component produces gap with fastener in junction, so as to improve the antiseptic property of magnesium alloy communication equipment.
In Fig. 3 or embodiment illustrated in fig. 4, on magnesium alloy structural part 31, packing ring, elastomeric pad 35
Elastic coating, can be any one stretching elongation more than 100% material, and be not limited to it is organic,
Inorganic, plastic coating.Optionally, the main component of elastic coating includes polyurethane, pure polyester, epoxy
At least one in polyester, polyureas, fluorine carbon, acrylic acid.For example, coating main component is isocyanates
Prepolymer and the polymer of amine reaction.
Further, in Fig. 3 or embodiment illustrated in fig. 4, the surface of magnesium alloy structural part 31 also includes
Surface pretreatment layer, surface pretreatment layer is chemical composition coating, and surface pretreatment layer is located at Structure of magnesium alloy
Between elastic coating on the surface and magnesium alloy structural part of part 31.Chemistry is set on magnesium alloy structural part
The method of conversion film can use existing any one method, no longer describe in detail herein.
The embodiment of the present invention also provides a kind of manufacture method of the magnesium alloy parts including elastic coating, uses
The magnesium alloy parts of the method manufacture can be as in magnesium alloy communication equipment provided in an embodiment of the present invention
Magnesium alloy structural part.
The manufacture method of the magnesium alloy parts including elastic coating that Fig. 5 is provided for present example, such as schemes
Shown in 5, the method for the present embodiment includes：
Step S501, shaping is processed to raw material magnesium alloy, obtains the magnesium alloy substrates of required shape.
Specifically, magnesium alloy is the alloy for adding other elements composition as base with magnesium elements, and magnesium is being determined
After the composition of alloy, be first fused together various elements as raw material magnesium alloy, then using casting,
The raw material magnesium alloy that the method that machine adds will be fused together is processed into magnesium alloy substrates.Wherein, casting can be with
Using the method for die casting, the raw material that will be fused together are cast into specific shape.Then logical
Past the mouth of a river, deburring, repair welding, mend the operation such as ash and obtain magnesium alloy blank.Then by magnesium alloy blank
Machine tool structure machine is carried out according to structural drawings to add, including the internal Cavity surface of processing, capillary groove etc..Wherein, lead to
Cross casting, the method that machine adds the shape of magnesium alloy substrates can be processed into magnesium alloy parts needed for shape.
Step S502, coats elastic coating on magnesium alloy substrates, and the elastic coating is insulated and stretching is extended
Rate is more than 100%.
Specifically, after magnesium alloy substrates are obtained, elastic coating is coated on the magnesium alloy substrates, the bullet
Property coating can be made up more than 100% material of any one stretching elongation, and the elastic coating is exhausted
Edge, you can obtain including the magnesium alloy parts of elastic coating.When magnesium alloy substrates surface is coated with elastic painting
After layer, elastic coating can play a part of insulation first.Secondly as the stretching of elastic coating is extended
Rate is more than 100%, then when the magnesium alloy parts including elastic coating are connected with each other, each magnesium alloy parts
The elastic coating of junction will be produced deformation by compression, produce the elastic coating of deformation will be magnesium alloy
Junction filling between part is full, therefore the junction of each magnesium alloy parts there will not be gap.This
Sample is just prevented from electrolyte and produces corrosion to Mg alloy surface into the junction of magnesium alloy parts.Separately
Outward, when the magnesium alloy parts including elastic coating are collided with, elastic coating can also produce deformation, support
Disappear the power collided with and be subject to, and without cracky or comes off, so as to avoid closing magnesium because elastic coating comes off
Metal parts are corroded.
The process that elastic coating is coated on magnesium alloy substrates can be the method using spraying or brushing,
One or more layers elastic coating is coated on magnesium alloy substrates.On magnesium alloy parts including elastic coating
The thickness of elastic coating is thicker, and its decay resistance is stronger, for example, elastic coating could be arranged to be more than
50 microns.The main component of elastic coating can include polyurethane, pure polyester, epoxy polyester, polyureas,
At least one in fluorine carbon, acrylic acid.For example, coating main component is isocyanate prepolymer and amine
The polymer of reaction.
The manufacture method of the magnesium alloy parts including elastic coating that the present embodiment is provided, by magnesium alloy
Elastic coating is coated on base material, wherein, the stretching elongation of the elastic coating is more than 100%, due to elasticity
Coating can produce deformation when being squeezed or colliding with, and can both prevent magnesium alloy parts from being produced in junction
Raw gap, can prevent from or mitigate elastic coating to come off or damaged when magnesium alloy parts are collided with again,
So as to improve the antiseptic property of magnesium alloy.
In Fig. 3 or embodiment illustrated in fig. 4, magnesium alloy structural part surface coating elastic coating method,
The method of elastic coating is coated on packing ring, the method for coating elastic coating can be adopted on elastomeric pad
Processed with the method shown in the present embodiment.
Further, embodiment illustrated in fig. 5 the magnesium alloy parts including elastic coating manufacture method
On the basis of, before step S502, surface preparation can also be carried out to magnesium alloy substrates surface, should
Surface preparation can be chemical conversion treatment so that magnesium alloy substrates Surface Creation chemical composition coating,
Just it is so that the surface of magnesium alloy substrates occurs Mg+2H2O=Mg (OH)2+H2This reaction.In magnesium alloy
Substrate surface is generated after chemical composition coating, further according to the method for step S502, including chemical conversion
The magnesium alloy substrates surface coating elastic coating of film.The magnesium alloy parts including elastic coating for so obtaining
Including chemical composition coating and elastic coating two-layer anticorrosive coat so that the antiseptic property of magnesium alloy parts is more preferably.
Fig. 6 is the structure of the magnesium alloy parts embodiment one including elastic coating provided in an embodiment of the present invention
Schematic diagram, as shown in fig. 6, the magnesium alloy parts including elastic coating that the present embodiment is provided are closed including magnesium
Auri material 61 and be coated on the elastic coating 62 on the surface of magnesium alloy substrates 61, elastic coating 62 insulate and
Stretching elongation is more than 100%.
The magnesium alloy parts including elastic coating shown in Fig. 6 can be according to Fig. 5 including elasticity apply
The manufacture method of the magnesium alloy parts of layer is made, and here is omitted for its specific method, composition and performance.
Fig. 7 is the structure of the magnesium alloy parts embodiment two including elastic coating provided in an embodiment of the present invention
Schematic diagram, as shown in fig. 7, the magnesium alloy parts including elastic coating of the present embodiment are on the basis of Fig. 6
On, between magnesium alloy substrates 61 and elastic coating 62, also including surface pretreatment layer 63, surface is pre-
Process layer 63 is chemical composition coating so that the antiseptic property of magnesium alloy parts is more preferably.
Further, in Fig. 6 or embodiment illustrated in fig. 7, the thickness of elastic coating 62 is micro- more than 50
Rice.
Further, in Fig. 6 or embodiment illustrated in fig. 7, the main component of elastic coating 62 includes gathering
At least one in urethane, pure polyester, epoxy polyester, polyureas, fluorine carbon, acrylic acid.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than right
Its limitation；Although being described in detail to the present invention with reference to foregoing embodiments, this area it is common
Technical staff should be understood：It can still modify to the technical scheme described in foregoing embodiments,
Or equivalent is carried out to which part or all technical characteristic；And these modifications or replacement, and
The scope of the essence disengaging various embodiments of the present invention technical scheme of appropriate technical solution is not made.
Claims (7)
1. a kind of magnesium alloy communication equipment, including shell and the electronic component being arranged in the shell, institute
Electronic component is stated for realizing the communication function of the communication equipment, the shell is mutually interconnected by least two
The hardware composition for connecing, wherein at least one hardware is magnesium alloy structural part, and its feature exists
In the magnesium alloy structural part includes elastic sealing layer, institute with the face that other hardwares contact with each other
State elastic sealing layer insulation and stretching elongation is more than 100%.
2. magnesium alloy communication equipment according to claim 1, it is characterised in that the elastic packing
Layer includes being coated on the elasticity on the surface contacted with each other with other hardwares on the magnesium alloy structural part
Coating；
Or the elastic sealing layer includes being coated with the packing ring of elastic coating.
3. magnesium alloy communication equipment according to claim 1 and 2, it is characterised in that it is described at least
Two hardwares are connected by fastener, the face that each magnesium alloy structural part is contacted with the fastener
Including dielectric resilience pad, the surface of the dielectric resilience pad is coated with elastic coating, and the elasticity is applied
The stretching elongation of layer is more than 100%.
4. the magnesium alloy communication equipment according to any one of claims 1 to 3, it is characterised in that institute
The surface for stating magnesium alloy structural part is coated with elastic coating, and the stretching elongation of the elastic coating is more than
100%.
5. magnesium alloy communication equipment according to claim 4, it is characterised in that the magnesium alloy knot
The surface of component also includes surface pretreatment layer, and the surface pretreatment layer is chemical composition coating, the table
Face pretreatment layer is located between the surface of the magnesium alloy structural part and the elastic coating.
6. the magnesium alloy communication equipment according to any one of claim 2~5, it is characterised in that institute
The thickness for stating elastic coating is more than 50 microns.
7. the magnesium alloy communication equipment according to any one of claim 2~6, it is characterised in that institute
The main component for stating elastic coating includes polyurethane, pure polyester, epoxy polyester, polyureas, fluorine carbon, propylene
At least one in acid.
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