CN112410629A - Material for set top box shell and manufacturing method - Google Patents
Material for set top box shell and manufacturing method Download PDFInfo
- Publication number
- CN112410629A CN112410629A CN202011090018.7A CN202011090018A CN112410629A CN 112410629 A CN112410629 A CN 112410629A CN 202011090018 A CN202011090018 A CN 202011090018A CN 112410629 A CN112410629 A CN 112410629A
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- China
- Prior art keywords
- parts
- top box
- weight
- set top
- aluminum alloy
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/12—Alloys based on aluminium with copper as the next major constituent
- C22C21/16—Alloys based on aluminium with copper as the next major constituent with magnesium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/12—Alloys based on aluminium with copper as the next major constituent
- C22C21/14—Alloys based on aluminium with copper as the next major constituent with silicon
Abstract
The invention provides a material for a set top box shell and a manufacturing method thereof. The material for the set top box shell comprises 1.2 to 2.5 parts by weight of silicon; 6.3-7.9 parts of copper; 0.3-0.8 part of titanium; 2.1-3.4 parts of magnesium; 0.6-0.9 parts of nickel; 83-92 parts of aluminum. The set-top box of the invention can radiate heat rapidly in a thermal convection mode, thereby fundamentally avoiding the conditions of crash and system breakdown of the set-top box and prolonging the service life of the set-top box.
Description
The technical field is as follows:
the invention relates to a material for a set top box shell and a manufacturing method thereof, belonging to the technical field of electronic components.
Background art:
the appearance competitiveness of the set-top box is realized by the shell, the material of the shell directly determines the hand feeling and the heat dissipation performance, and the overall competitiveness of the product can be improved. The temperature of the set top box body is related to the conversion rate, if the efficiency is higher in the conversion process, the electric energy loss is lower, the heat is also lower, when the interior is overheated, the aging of the components is accelerated if the temperature is continuously too high, and finally the set top box has too short service life, and the system components are overloaded to crash and crash. The outer reason that influences STB fuselage temperature is its shell, and the fuselage high temperature can accelerate inside electronic component ageing, optimizes the inner structure of STB and can promote the thermal diffusivity, and the shell material is also very big to radiating influence, and the shell of current STB generally adopts the plastics material, and under the heated condition, the plastics material is because its inside free electron is few, and the flow of energy in the object is slower. Therefore, heat is sealed in the shell, so that a set top box is blocked, the set top box is halted, the system is crashed, and the user experience is influenced.
Disclosure of Invention
The invention aims to solve the existing problems and provides a material for a set top box shell and a manufacturing method thereof, which can quickly dissipate heat in a heat convection mode, fundamentally avoid the conditions of crash and system breakdown of the set top box and prolong the service life of the set top box.
The above purpose is realized by the following technical scheme:
the material for the case of the set top box comprises 1.2 to 2.5 parts by weight of silicon; 6.3-7.9 parts of copper; 0.3-0.8 part of titanium; 2.1-3.4 parts of magnesium; 0.6-0.9 parts of nickel; 83-92 parts of aluminum.
The material for the set top box comprises 1.9 parts of silicon by weight; 7.1 parts of copper; 0.6 part of titanium; 2.7 parts of magnesium; 0.6-0.9 parts of nickel; 89 parts of aluminum.
The preparation method of the material for the set top box comprises the following steps:
(1) smelting: adding 1.2-2.5 parts of silicon, 6.3-7.9 parts of copper, 0.3-0.8 part of titanium, 2.1-3.4 parts of magnesium, 0.6-0.9 part of nickel and 83-92 parts of aluminum into an intermediate frequency furnace according to parts by weight, and heating and melting the aluminum alloy;
(2) refining: dehydrogenating the molten aluminum alloy, adding a covering agent accounting for 0.3-0.5% of the total mass of the aluminum alloy, and preserving the temperature at 820-835 ℃ for 25-35 minutes;
(3) and carrying out slagging-off, casting and rolling on the refined aluminum alloy solution, and finally carrying out cold press molding.
In the preparation method of the material for the set top box, the temperature range of the heating and dissolving in the step (1) is 780-860 ℃.
The preparation method of the material for the set top box further comprises the step of electromagnetic stirring in the heating and dissolving process in the step (1), wherein the electromagnetic stirring time is 25-30 minutes.
In the preparation method of the material for the set-top box, the dehydrogenation in the step (2) is a process of introducing argon into the aluminum alloy in the dissolving process and stirring.
According to the preparation method of the material for the set top box, the covering agent in the step (2) comprises 22-38 parts by weight of potassium chloride, 10-15 parts by weight of sodium chloride, 3-5 parts by weight of potassium fluoride, 3-5 parts by weight of sodium bisulfate and 3-5 parts by weight of sodium fluosilicate.
Has the advantages that:
compared with the prior art, the invention has the following beneficial effects:
the invention adopts reasonable proportion and manufacturing method, the manufactured set-top box shell can quickly dissipate heat in a heat convection mode, thereby fundamentally avoiding the conditions of crash and system breakdown of the set-top box and prolonging the service life of the set-top box.
Detailed Description
The present invention will be further illustrated below with reference to specific embodiments, which are to be understood as merely illustrative and not limitative of the scope of the present invention.
The material for the case of the set top box comprises 1.2 to 2.5 parts by weight of silicon; 6.3-7.9 parts of copper; 0.3-0.8 part of titanium; 2.1-3.4 parts of magnesium; 0.6-0.9 parts of nickel; 83-92 parts of aluminum.
The preparation method of the material for the set top box comprises the following steps:
(1) smelting: adding 1.2-2.5 parts of silicon, 6.3-7.9 parts of copper, 0.3-0.8 part of titanium, 2.7 parts of magnesium, 0.6-0.9 part of nickel and 83-92 parts of aluminum into an intermediate frequency furnace according to the parts by weight, and heating and melting the aluminum alloy;
(2) refining: dehydrogenating the molten aluminum alloy, adding a covering agent accounting for 0.3-0.5% of the total mass of the aluminum alloy, and preserving the temperature at 820-835 ℃ for 25-35 minutes;
(3) and carrying out slagging-off, casting and rolling on the refined aluminum alloy solution, and finally carrying out cold press molding.
In the preparation method of the material for the set top box, the temperature range of the heating and dissolving in the step (1) is 780-860 ℃.
The preparation method of the material for the set top box further comprises the step of electromagnetic stirring in the heating and dissolving process in the step (1), wherein the electromagnetic stirring time is 25-30 minutes.
In the preparation method of the material for the set-top box, the dehydrogenation in the step (2) is a process of introducing argon into the aluminum alloy in the dissolving process and stirring.
According to the preparation method of the material for the set top box, the covering agent in the step (2) comprises 22-38 parts by weight of potassium chloride, 10-15 parts by weight of sodium chloride, 3-5 parts by weight of potassium fluoride, 3-5 parts by weight of sodium bisulfate and 3-5 parts by weight of sodium fluosilicate.
The effects of the present invention are further illustrated by the following specific examples and comparative examples:
the covering agent selected in the embodiment for manufacturing the set top box shell by adopting the method is 25 parts of potassium chloride, 12 parts of sodium chloride, 4 parts of potassium fluoride, 4 parts of sodium bisulfate and 4 parts of sodium fluosilicate, and accounts for 0.5 percent of the total amount of the aluminum alloy. And the heat dissipation performance of the test device is tested, and the test method comprises the following steps:
(1) firstly, two resin rings are sleeved at two ends of a metal cylinder, heat-conducting silica gel is coated at two ends of the metal cylinder, then the metal cylinder is placed between a heating plate A and a set top box shell P manufactured in the embodiment, and three screws below the set top box shell P manufactured in the embodiment are adjusted to enable the metal cylinder to be in close contact with the heating plate A and the set top box shell P manufactured in the embodiment.
(2) Putting ice-water mixture into Dewar flask, inserting cold end of thermocouple into Dewar flask, inserting hot end into upper and lower holes on side surface of metal cylinder, and connecting the thermocouple wires to temperature measuring sensor I, II.
(3) The power supply is switched on, the heating switch is placed in a high gear, when the temperature T1 of the sensor I is about 100 ℃, the heating switch is placed in a low gear for about 40 min.
(4) When steady state was reached (the values of T1 and T2 varied by less than 3 ℃ in l0 min), the values of T1 and T2 were recorded every 2 min.
(5) The heat dissipation rate of the set-top box casing P manufactured in the example was measured around the steady state value T2: remove the hot plate A. remove the two temperature measuring hot ends and insert the temperature measuring hot end of T2 into the side of the case P of the set-top box manufactured in the exampleAnd (3) taking the metal cylinder out of the small hole, enabling the heating plate A to be in direct contact with the set top box shell P manufactured in the embodiment, and when the temperature of the set top box shell P manufactured in the embodiment rises to be about 5 ℃ higher than the value of the steady state T, moving the heating plate A away, naturally cooling the set top box shell P manufactured in the embodiment, and recording the temperature of the set top box shell P at the moment every 2 minutes. Measured four times in total and recorded as TⅠ、TⅡ、TⅢ、TⅣ
The material for the set top box comprises 1.9 parts of silicon by weight; 7.1 parts of copper; 0.6 part of titanium; 2.7 parts of magnesium; 0.6-0.9 parts of nickel; 89 parts of aluminum.
The following components are taken in kilograms.
1.2-2.5 parts of silicon; 6.3-7.9 parts of copper; 0.3-0.8 part of titanium; 2.1-3.4 parts of magnesium; 0.6-0.9 parts of nickel; 83 to 92 portions of aluminum
| Silicon | Copper (Cu) | Titanium (IV) | Magnesium alloy | Nickel (II) | Aluminium | TⅠ | TⅡ | TⅢ | TⅣ | |
| Example 1 | 1.2 | 7.9 | 0.3 | 3.4 | 0.6 | 92 | 69 | 47 | 32 | 25 |
| Example 2 | 1.3 | 7.7 | 0.4 | 3.3 | 0.7 | 91 | 71 | 46 | 31 | 25 |
| Example 3 | 1.5 | 7.5 | 0.5 | 3.1 | 0.8 | 90 | 70 | 45 | 33 | 25 |
| Example 4 | 1.7 | 7.4 | 0.6 | 3.0 | 0.9 | 89 | 68 | 49 | 30 | 25 |
| Example 5 | 1.8 | 7.3 | 0.7 | 2.9 | 0.8 | 88 | 70 | 48 | 32 | 25 |
| Example 6 | 1.9 | 7.1 | 0.8 | 2.7 | 0.7 | 87 | 75 | 46 | 31 | 25 |
| Example 7 | 2.1 | 7.0 | 0.7 | 2.5 | 0.6 | 86 | 68 | 47 | 33 | 25 |
| Example 8 | 2.2 | 6.9 | 0.6 | 2.3 | 0.7 | 85 | 69 | 45 | 30 | 25 |
| Example 9 | 2.3 | 7.8 | 0.5 | 2.2 | 0.8 | 84 | 70 | 48 | 34 | 25 |
| Example 10 | 2.5 | 7.6 | 0.4 | 2.1 | 0.9 | 83 | 71 | 47 | 31 | 25 |
The set top box shell is processed into the set top box shell according to the method of the invention by adopting the proportion of the invention as an embodiment, and the heat dissipation test evaluation shows that the set top box shell can dissipate heat rapidly in a heat convection mode, thereby fundamentally avoiding the conditions of crash and system breakdown of the set top box and prolonging the service life of the set top box.
Claims (7)
1. A material for a set top box shell is characterized in that: 1.2-2.5 parts of silicon; 6.3-7.9 parts of copper; 0.3-0.8 part of titanium; 2.1-3.4 parts of magnesium; 0.6-0.9 parts of nickel; 83-92 parts of aluminum.
2. The material for set-top boxes according to claim 1, wherein: 1.9 parts of silicon; 7.1 parts of copper; 0.6 part of titanium; 2.7 parts of magnesium; 0.6-0.9 parts of nickel; 89 parts of aluminum.
3. A preparation method of the material for the set top box is characterized by comprising the following steps: the method comprises the following steps:
(1) smelting: adding 1.2-2.5 parts of silicon, 6.3-7.9 parts of copper, 0.3-0.8 part of titanium, 2.1-3.4 parts of magnesium, 0.6-0.9 part of nickel and 83-92 parts of aluminum into an intermediate frequency furnace according to parts by weight, and heating and melting the aluminum alloy;
(2) refining: dehydrogenating the molten aluminum alloy, adding a covering agent accounting for 0.3-0.5% of the total mass of the aluminum alloy, and preserving the temperature at 820-835 ℃ for 25-35 minutes;
(3) and carrying out slagging-off, casting and rolling on the refined aluminum alloy solution, and finally carrying out cold press molding.
4. The method for preparing a material for a set-top box according to claim 1, wherein: the temperature range of the heating dissolution in the step (1) is 780-860 ℃.
5. The method for preparing a material for a set-top box according to claim 1, wherein: in the heating and dissolving process in the step (1), the method also comprises a step of electromagnetic stirring, wherein the electromagnetic stirring time is 25-30 minutes.
6. The method for preparing a material for a set-top box according to claim 1, wherein: and (3) the dehydrogenation in the step (2) is a process of introducing argon into the aluminum alloy in the dissolving process and stirring.
7. The method for preparing a material for a set-top box according to claim 1, wherein: the covering agent in the step (2) comprises 22-38 parts by weight of potassium chloride, 10-15 parts by weight of sodium chloride, 3-5 parts by weight of potassium fluoride, 3-5 parts by weight of sodium bisulfate and 3-5 parts by weight of sodium fluosilicate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011090018.7A CN112410629A (en) | 2020-10-13 | 2020-10-13 | Material for set top box shell and manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011090018.7A CN112410629A (en) | 2020-10-13 | 2020-10-13 | Material for set top box shell and manufacturing method |
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| Publication Number | Publication Date |
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| CN112410629A true CN112410629A (en) | 2021-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011090018.7A Pending CN112410629A (en) | 2020-10-13 | 2020-10-13 | Material for set top box shell and manufacturing method |
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Application publication date: 20210226 |