CN112706478A - Heat dissipation material for mobile phone and processing technology thereof - Google Patents
Heat dissipation material for mobile phone and processing technology thereof Download PDFInfo
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- CN112706478A CN112706478A CN202011578314.1A CN202011578314A CN112706478A CN 112706478 A CN112706478 A CN 112706478A CN 202011578314 A CN202011578314 A CN 202011578314A CN 112706478 A CN112706478 A CN 112706478A
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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
- B32B15/00—Layered products comprising a layer of metal
- B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B47/00—Auxiliary arrangements, devices or methods in connection with rolling of multi-layer sheets of metal
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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
- B32B15/00—Layered products comprising a layer of metal
- B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
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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
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
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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
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/0012—Mechanical treatment, e.g. roughening, deforming, stretching
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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
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/0036—Heat treatment
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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
- 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
- B32B7/10—Interconnection of layers at least one layer having inter-reactive properties
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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
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/0036—Heat treatment
- B32B2038/0048—Annealing, relaxing
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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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/302—Conductive
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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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/558—Impact strength, toughness
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Abstract
The invention relates to the technical field of material rolling, and discloses a heat dissipation material for a mobile phone and a processing technology thereof, wherein the processing technology of the heat dissipation material comprises the following steps: selecting raw materials, carrying out composite treatment, polishing treatment, carrying out first diffusion annealing treatment and calendaring treatment. According to the processing technology of the heat dissipation material for the mobile phone, the copper belt and the titanium belt are compounded into a whole through certain mechanical engagement, and the heat dissipation material produced through the processing technology integrates the performance characteristics of titanium and copper, so that the heat dissipation material not only keeps good strength and toughness, but also has good heat conductivity, and the heat dissipation requirement of the mobile phone can be fully met; meanwhile, the heat dissipation and heat conduction performance of the heat dissipation material is adjusted by adjusting the thickness ratio of the copper belt to the titanium belt, the adjustment is flexible in process, and only the thickness of the metal before compounding is required to be changed.
Description
Technical Field
The invention relates to the technical field of material rolling, in particular to a heat dissipation material for a mobile phone and a processing technology thereof.
Background
With the application of the mobile phone function intellectualization, the life quality is greatly improved, the function requirements of the mobile phone also pursue more application intellectualization continuously, and the mobile phone chip is required to provide excellent computing capability. Certainly, high-speed operation and processing generate heat, the higher the operation speed is, the longer the operation time is, the higher the calorific value is, if the heat cannot be dissipated in time, the temperature of the mobile phone will gradually rise, and the safety of the battery and the damage of the chip can be endangered in serious cases, so that the heat dissipation function of the mobile phone is not negligible.
The heat dissipation material that present cell-phone adopted is mainly copper alloy, and copper alloy has that welding performance is good, better heat dissipation and certain intensity and toughness, but with the promotion of the high-speed operating ability of 5G cell-phone, needs better heat dissipation material. On the other hand, the mobile phone is also required to be thinner, so that the heat dissipation material is required to have better strength and toughness, and the mobile phone is ensured not to deform in the using process. The copper alloy cannot meet the development requirements of the smart phone in strength and heat dissipation efficiency.
Disclosure of Invention
The invention aims to provide a heat dissipation material for a mobile phone and a processing technology thereof, and aims to solve the problems that in the prior art, the heat dissipation efficiency of the heat dissipation material is insufficient, and the development requirements of a smart phone cannot be met.
The invention is realized in such a way that in a first aspect, the invention provides a processing technology of a heat dissipation material for a mobile phone, which comprises the following steps:
selecting raw materials: selecting two copper strips with the thickness of 0.5-1.0mm and the width of 100-; wherein the hardness of the copper strip is 70-80HV1.0, and the hardness of the titanium strip is 150-180HV 1.0;
performing composite treatment: performing calendering and compounding on the selected copper belt and the selected titanium belt; respectively providing certain heat energy for the copper belt and the titanium belt so as to control the temperature of the titanium belt to be 300 ℃ in 200-;
polishing treatment: polishing the surface of the composite strip obtained after the composite treatment to remove impurities generated on the surface of the composite strip in the composite process;
first diffusion annealing treatment: performing primary diffusion annealing treatment on the polished composite strip at the annealing temperature of 700-900 ℃;
rolling treatment: and rolling the composite strip subjected to diffusion annealing treatment for multiple times by using a multi-roll rolling mill until the composite strip is rolled to the thickness of 0.05-0.30 mm.
Further, before the step of the composite treatment, the processing technology further comprises the following steps:
cleaning treatment: and respectively cleaning the surfaces of the selected copper belt and the selected titanium belt.
Further, the cleaning process specifically includes the steps of:
carrying out surface polishing, impurity removal and oxidation removal on the selected copper belt and titanium belt through polishing equipment;
and carrying out surface drying treatment on the copper belt and the titanium belt which are subjected to polishing, impurity removal and deoxidization by drying equipment.
Further, in the step of the composite processing:
and (2) calendering and compounding the titanium belt and the copper belt through a pressure compounding machine, wherein an inert gas or an ammonia decomposition gas (N2, H2) is introduced into the pressure compounding machine so that the titanium belt and the copper belt are calendered and compounded in an inert atmosphere or a reducing atmosphere.
Further, in the step of the rolling treatment,
performing one or more times of softening annealing treatment on the composite strip between any two times of rolling the composite strip, wherein the annealing temperature is 800-; the multi-roll rolling mill produces work hardening when the composite strip is rolled for multiple times, and the softening annealing treatment is used for eliminating the work hardening produced in the rolling treatment process of the composite strip.
Further, after the step of calendering, the method further comprises the following steps:
and (3) second diffusion annealing treatment: and performing secondary diffusion annealing treatment on the finished product strip subjected to the rolling treatment, wherein the annealing temperature is 700-900 ℃, so that the hardness of the finished product strip meets the required hardness requirement.
Further, after the step of calendering, the method further comprises the following steps:
surface treatment: removing rolling oil on the surface of the finished product strip and drying;
punching and etching: and (4) stamping and etching the finished strip according to requirements, and cutting the finished strip into required sizes.
In a second aspect, the invention further provides a heat dissipation material for a mobile phone, wherein the heat dissipation material is processed by the processing technology.
Compared with the prior art, the processing technology of the heat dissipation material for the mobile phone provided by the invention fully utilizes the plastic deformation of metal and the atomic diffusion principle between metals, combines the copper strip and the titanium strip into a whole through certain mechanical engagement, and the heat dissipation material produced by the processing technology integrates the performance characteristics of titanium and copper, not only maintains good strength and toughness, but also has good heat conductivity, thereby being capable of fully meeting the heat dissipation requirement of the mobile phone; meanwhile, the heat dissipation and heat conduction performance of the heat dissipation material is adjusted by adjusting the thickness ratio of the copper strip to the titanium strip, the adjustment is flexible in process, only the thickness of the metal before compounding is required to be changed, the content and influence of trace elements are required to be continuously adjusted during smelting, and the method is relatively complicated and high in development cost; moreover, the titanium belt is easy to generate corrosion even in the environment with raised temperature, the heat dissipation effect is not influenced, the long-term stable heat dissipation characteristic can be kept, and the heat dissipation effect cannot be changed along with the time.
Drawings
Fig. 1 is a schematic flow chart illustrating a process for manufacturing a heat dissipating material for a mobile phone according to a first embodiment of the present invention;
fig. 2 is a schematic flow chart illustrating a process for manufacturing a heat dissipating material for a mobile phone according to a second embodiment of the present invention;
fig. 3 is a schematic flow chart illustrating a process of manufacturing a heat dissipating material for a mobile phone according to a third embodiment of the present invention;
fig. 4 is a schematic flow chart illustrating a process of manufacturing a heat dissipating material for a mobile phone according to a fourth embodiment of the present invention;
fig. 5 is a schematic structural diagram of a heat dissipation material for a mobile phone according to an embodiment of the present invention.
Reference numerals: 1-first copper tape layer, 2-titanium tape layer, 3-second copper tape layer.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms may be understood by those skilled in the art according to specific circumstances.
The following describes the implementation of the present invention in detail with reference to specific embodiments.
A processing process of a heat dissipation material for a mobile phone according to a first embodiment of the present invention is shown in fig. 1, and referring to fig. 2, the processing process of the heat dissipation material for a mobile phone includes the following steps:
step S10, selecting raw materials: selecting two copper strips with the thickness of 0.5-1.0mm (such as 0.5mm, 0.8mm or 1.0mm) and the width of 100-150mm (such as 100mm, 125mm or 150mm), and selecting a titanium strip with the thickness of 1.5-3.0mm (such as 1.5mm, 2.0mm or 3.0mm) and the width of 100-150mm (such as 100mm, 125mm or 150 mm); wherein the hardness of the titanium strip is 150-180HV1.0 (such as 150HV1.0, 160HV1.0 or 180HV1.0), and the hardness of the copper strip is 70-80HV1.0 (such as 70HV1.0, 75HV1.0 or 80HV 1.0).
Step S20, composite processing: calendering and compounding the selected copper belt and the selected titanium belt, respectively providing certain heat energy for the copper belt and the titanium belt, so that the temperature of the titanium belt is controlled to be 200-plus-300 ℃ (for example, 200 ℃, 250 ℃ or 300 ℃), the temperature of the copper belt is controlled to be 150-plus-200 ℃ (for example, 150 ℃, 175 ℃ or 200 ℃), and one copper belt, the other copper belt and the titanium belt are compounded into a whole in sequence according to an arrangement mode from top to bottom to obtain a composite belt material; the composite strip obtained after compounding is broken back and forth at 90 degrees, and the end face is not separated to serve as the qualified standard of compounding.
Preferably, the copper strip and the titanium strip are subjected to calendering and compounding through a pressure compounding machine, and in order to ensure the cleanliness between the selected titanium strip and the copper strip, an inert gas or an ammonia decomposition gas (N2, H2) is introduced into the pressure compounding machine, so that the titanium strip and the copper strip are subjected to calendering and compounding in an inert atmosphere or a reducing atmosphere; therefore, impurities (such as oxides) between the two materials can be prevented, the cleanliness between the materials is ensured, and substances with poor plasticity are not generated, so that the bonding strength between different materials is influenced.
Step S30, polishing: and polishing the surface of the composite strip obtained after the composite treatment by using a polishing machine, and removing impurities generated on the surface of the composite strip in the composite process so as to eliminate defects (such as scratches, indentations, pits and the like) generated on the surface of a product in the processing process.
Step S40, first diffusion annealing: performing first diffusion annealing treatment on the polished composite strip, wherein the annealing temperature is 700-900 ℃ (for example, 700 ℃, 800 ℃ or 900 ℃); different annealing temperatures can be selected through different deformation amounts, and the annealing mainly aims to enable the composite interface of the composite strip to be bonded more tightly through diffusion of atoms between materials, so that the composite strength of a product is enhanced.
Step S50, rolling: and rolling the composite strip subjected to diffusion annealing treatment for multiple times by using a multi-roll rolling mill until the composite strip is rolled to the thickness of 0.05-0.30 mm.
Preferably, the composite strip is subjected to one or more softening annealing treatments between any two rolling of the composite strip, the annealing temperature being 800-; the multi-roll rolling mill produces work hardening when the composite strip is rolled for multiple times, and the softening annealing treatment is used for eliminating the work hardening produced in the rolling treatment process of the composite strip.
According to the processing technology of the heat dissipation material for the mobile phone, the plastic deformation of metal and the atomic diffusion principle between metals are fully utilized, the copper belt and the titanium belt are compounded into a whole through certain mechanical occlusion, and the heat dissipation material produced through the processing technology integrates the performance characteristics of titanium and copper, so that the heat dissipation material not only keeps good strength and toughness, but also has good heat conductivity, and the heat dissipation requirement of the mobile phone can be fully met; meanwhile, the heat dissipation and heat conduction performance of the heat dissipation material is adjusted by adjusting the thickness ratio of the copper strip to the titanium strip, the adjustment is flexible in process, only the thickness of the metal before compounding is required to be changed, the content and influence of trace elements are required to be continuously adjusted during smelting, and the method is relatively complicated and high in development cost; moreover, the titanium belt is easy to generate corrosion even in the environment with raised temperature, the heat dissipation effect is not influenced, the long-term stable heat dissipation characteristic can be kept, and the heat dissipation effect cannot be changed along with the time.
Based on the first embodiment of the present invention, a second embodiment of the present invention is provided, fig. 2 is a schematic flow chart of a processing process of a heat dissipation material for a mobile phone according to the second embodiment of the present invention, please refer to fig. 2, before the step S20, the processing process further includes the following steps:
step S101, cleaning: and respectively cleaning the surfaces of the selected copper belt and the selected titanium belt.
After the cleaning treatment in the step S101, and then the step S2 is performed, the composite strength between the copper strip and the titanium strip can be greatly improved, and the composite effect of the composite strip can be improved.
It should be noted that step S101 specifically includes the following steps:
step S1011: polishing the surfaces of the selected copper belt and the titanium belt by using polishing equipment to remove impurities and oxidation; therefore, impurities and metal oxides on the surfaces of the copper belt and the titanium belt can be removed, and the composite effect between the copper belt and the titanium belt is improved.
Step S1012: carrying out surface drying treatment on the copper strips and the titanium strips which are subjected to polishing, impurity removal and deoxidization by drying equipment; therefore, the surfaces of the copper belt and the titanium belt can be kept dry, and potential quality hazards such as water stains/water spots are avoided.
Based on the first embodiment of the present invention, a third embodiment of the present invention is provided, fig. 3 is a schematic flow chart of a processing process of a heat dissipation material for a mobile phone according to the third embodiment of the present invention, please refer to fig. 3, after the step S50, the processing process further includes the following steps:
step S501, second diffusion annealing: and carrying out secondary diffusion annealing treatment on the finished strip subjected to the rolling treatment, wherein the annealing temperature is 700-900 ℃ (such as 700 ℃, 800 ℃ or 900 ℃) so as to enable the hardness of the finished strip to reach the required hardness requirement, and the hardness of the finished strip is the same at different annealing temperatures.
Based on the first embodiment of the present invention, a fourth embodiment of the present invention is provided, fig. 4 is a schematic flow chart of a processing process of a heat dissipation material for a mobile phone according to the fourth embodiment of the present invention, please refer to fig. 4, after the step S50, the processing process further includes the following steps:
step S502, surface treatment: and removing the rolling oil on the surface of the finished product strip and drying the rolling oil, thereby ensuring the smoothness of the surface of the finished product strip.
Step S503, press etching: stamping and etching the finished product strip according to requirements, and cutting into required sizes; specifically, the finished product strips are cut according to sizes of different specifications, and the cut finished product strips are subjected to vacuum packaging.
In one embodiment, the process for manufacturing the heat dissipating material includes the steps of,
step S10, selecting raw materials:
titanium strip: 3.0X 115mm, HV1.0:160,
two copper strips: 0.9X 115mm, HV1.0: 80;
step S101, cleaning: polishing the surfaces of the three strips by using a polishing machine, washing the surfaces by using hot water after polishing, and drying the surfaces by using hot air to ensure that the surfaces have no impurities, water spots and the like;
step S20, composite processing: compounding on a two-roller rolling compounding machine, wherein the middle layer is a titanium belt, the upper layer and the lower layer are respectively copper belts, and the three belts are compounded together; the temperature of the titanium strip at the roll mouth is controlled at 210 ℃, the temperature deviation is +/-5 ℃, the temperature of the copper strip at the roll mouth is controlled at 180 ℃, the temperature deviation is +/-5 ℃, ammonia decomposition gas (N2, H2) is introduced into a rolling mill for protecting the strip before the strip enters a roll, the gas flow is controlled at 7Nm3/H, the thickness of a rolling outlet of a compound machine is 1.6mm, so that the thickness of the compound strip after compounding is 1.6mm, the compound strip is broken at 90 degrees after compounding, the section has no separation phenomenon, and the compound strength is qualified;
step S30, polishing: cleaning black impurities, scraps, lines and the like on the surface of the compounded strip by using a polishing machine, and simultaneously drying by using hot water and a drying facility;
step S40, first diffusion annealing: after cleaning, carrying out heat treatment in a bright annealing furnace at 850 ℃ and 1m/min, after annealing, enabling the composite interface of the composite strip to be more tightly combined, enhancing the composite strength of the product, eliminating the processing hardness of the strip and facilitating the later cold processing;
step S50, rolling: carrying out back and forth rolling on a four-roller rolling machine after annealing for 15 passes, and carrying out softening annealing on the semi-finished product and then rolling until the thickness of the product is 0.08mm in the rolling process;
step S501, second diffusion annealing: annealing the rolled finished strip at 830 ℃, and keeping the hardness of the titanium strip controlled at HV1.0: 120;
step S502, surface treatment: carrying out surface degreasing and drying on the finished product strip on a cleaning machine to ensure that the surface of the finished product strip has no quality defect;
step S503, press etching: and (4) stamping and etching the finished strip according to requirements, and cutting the finished strip into required sizes.
Referring to fig. 5, the invention further provides a heat dissipation material for a mobile phone, the heat dissipation material is obtained by processing through the processing technology, and of course, the heat dissipation material can also be used in other products, and the heat dissipation material includes a first copper tape layer 1, a titanium tape layer 2 and a second copper tape layer 3 which are sequentially stacked from top to bottom.
According to the heat dissipation material for the mobile phone, the copper belt and the titanium belt are compounded into a whole through certain mechanical occlusion, so that the heat dissipation material integrates the performance characteristics of titanium and copper, not only maintains good strength and toughness, but also has good heat conductivity, and the heat dissipation requirement of the mobile phone can be fully met; meanwhile, the heat dissipation and heat conduction performance of the heat dissipation material is adjusted by adjusting the thickness ratio of the copper belt to the titanium belt, the adjustment is flexible in process, and only the thickness of the metal before compounding is required to be changed, so that the production cost is greatly reduced.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. A processing technology of a heat dissipation material for a mobile phone is characterized by comprising the following steps:
selecting raw materials: selecting two copper strips with the thickness of 0.5-1.0mm and the width of 100-; wherein the hardness of the copper strip is 70-80HV1.0, and the hardness of the titanium strip is 150-180HV 1.0;
performing composite treatment: performing calendering and compounding on the selected copper belt and the selected titanium belt; respectively providing certain heat energy for the copper belt and the titanium belt so as to control the temperature of the titanium belt to be 300 ℃ in 200-;
polishing treatment: polishing the surface of the composite strip obtained after the composite treatment to remove impurities generated on the surface of the composite strip in the composite process;
first diffusion annealing treatment: performing primary diffusion annealing treatment on the polished composite strip at the annealing temperature of 700-900 ℃;
rolling treatment: and rolling the composite strip subjected to diffusion annealing treatment for multiple times by using a multi-roll rolling mill until the composite strip is rolled to the thickness of 0.05-0.30 mm.
2. The process for manufacturing a heat dissipating material for cellular phones according to claim 1, wherein the process further comprises, before the step of the composite treatment, the steps of:
cleaning treatment: and respectively cleaning the surfaces of the selected copper belt and the selected titanium belt.
3. The processing technology of the heat dissipation material for the mobile phone as claimed in claim 2, wherein the cleaning process specifically comprises the following steps:
carrying out surface polishing, impurity removal and oxidation removal on the selected copper belt and titanium belt through polishing equipment;
and carrying out surface drying treatment on the copper belt and the titanium belt which are subjected to polishing, impurity removal and deoxidization by drying equipment.
4. The process for manufacturing a heat dissipating material for cellular phones according to claim 1, wherein in the step of composite processing:
and (2) rolling and compounding the copper strip and the titanium strip by a pressure compounding machine, wherein an inert gas or an ammonia decomposition gas (N2, H2) is introduced into the pressure compounding machine so that the copper strip and the titanium strip are rolled and compounded in an inert atmosphere or a reducing atmosphere.
5. The process for producing a heat dissipating material for cellular phones according to claim 1, wherein in the step of rolling,
performing one or more times of softening annealing treatment on the composite strip between any two times of rolling the composite strip, wherein the annealing temperature is 800-; the multi-roll rolling mill produces work hardening when the composite strip is rolled for multiple times, and the softening annealing treatment is used for eliminating the work hardening produced in the rolling treatment process of the composite strip.
6. The process for manufacturing a heat dissipating material for cellular phones according to claim 1, further comprising the steps of, after the step of rolling:
and (3) second diffusion annealing treatment: and performing second diffusion annealing treatment on the finished product strip subjected to the rolling treatment, wherein the annealing temperature is 700-900 ℃, so that the hardness of the finished product strip meets the required hardness requirement.
7. The process for manufacturing a heat dissipating material for cellular phones according to claim 1, further comprising the steps of, after the step of rolling:
surface treatment: removing rolling oil on the surface of the finished product strip and drying;
punching and etching: and (4) stamping and etching the finished strip according to requirements, and cutting the finished strip into required sizes.
8. A heat dissipating material for a cellular phone, wherein the heat dissipating material is processed by the process of any one of claims 1 to 7.
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| CN113500096A (en) * | 2021-07-05 | 2021-10-15 | 湖南湘投金天钛金属股份有限公司 | Titanium-copper precise composite strip coil containing niobium transition layer and preparation method thereof |
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| US20180369971A1 (en) * | 2017-06-22 | 2018-12-27 | Asia Vital Components Co., Ltd. | Method of manufacturing a heat dissipation device |
| CN111128929A (en) * | 2019-12-30 | 2020-05-08 | 深圳市鑫越新材料科技有限公司 | Heat dissipation material and processing technology thereof |
Cited By (2)
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| CN113477740A (en) * | 2021-07-05 | 2021-10-08 | 湖南湘投金天钛金属股份有限公司 | Titanium-copper precise composite strip coil and preparation method thereof |
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Application publication date: 20210427 |