Sapphire insulator metal shell processing technology

Abstract

The invention belongs to the technical field of shells, and particularly relates to a sapphire insulator metal shell processing technology which comprises the following specific steps: heating metal until the metal is in a liquid state, and at the moment, casting molten metal in a shell mold so that the molten metal is solidified and formed in the shell mold to obtain a metal shell casting, drilling the obtained metal shell casting to obtain a pre-mounting hole, putting the metal shell casting into a vacuum chamber, plating a pure metal film on the outer surface of the metal shell casting by adopting a PVD (Physical Vapor Deposition) film plating mode, taking out the plated metal shell casting from the vacuum chamber, and carrying out vacuum treatment on the plated metal shell casting to obtain the pre-mounting hole. According to the invention, the sapphire insulator is arranged in the metal shell, so that the problem that the currently selected insulating medium cannot bear ultrahigh withstand voltage can be solved, and the connection performance between packaging shell structures can be greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of housings, and particularly to a processing technology for a metal housing of a sapphire insulator. Background Art

[0002] With the continuous advancement of the thinning and miniaturization of electronic components, semiconductor integrated circuits require packaging with better electrical performance, higher power density, higher reliability, and lighter weight, which poses challenges to the housings that are important components of the packaging.

[0003] Currently, when the semiconductor integrated circuit packaging housing is in use, the connection performance between its packaging housing structures is average. Because the currently selected insulating medium cannot withstand ultra-high withstand voltage, the service performance will be reduced, and there is a large room for improvement. Therefore, a processing technology for a metal housing of a sapphire insulator is invented. Summary of the Invention

[0004] In view of the above and / or problems existing in the existing processing technology for a metal housing of a sapphire insulator, the present invention is proposed.

[0005] Therefore, the purpose of the present invention is to provide a processing technology for a metal housing of a sapphire insulator, which can solve the above-mentioned existing problems.

[0006] To solve the above technical problems, according to one aspect of the present invention, the following technical solutions are provided:

[0007] A processing technology for a metal housing of a sapphire insulator, which specifically includes the following steps:

[0008] Step 1: Heat the metal until it becomes liquid. At this time, pour the metal liquid into the housing mold so that the metal liquid solidifies in the housing mold to obtain a metal housing casting.

[0009] Step 2: Perform a drilling operation on the obtained metal housing casting to obtain pre-installation holes.

[0010] Step 3: Place the metal housing casting into a vacuum chamber and deposit a pure metal film on the outer surface of the metal housing casting by means of PVD coating.

[0011] Step 4: Take out the metal housing casting coated with the film from the vacuum chamber and perform anodic oxidation on the pure metal film on the metal housing casting to form a metal oxide film layer.

[0012] Step 5: Heat the sapphire until it becomes liquid. Then heat the toughening agent and the wear-resistant agent until they become liquid. After that, mix the liquid sapphire, the liquid toughening agent, and the liquid wear-resistant agent to obtain an insulator material.

[0013] Step Six: Place the liquid insulator material in the insulator mold so that the liquid insulator material solidifies in the insulator mold to obtain a sapphire insulator.

[0014] Step Seven: Fix the sapphire insulator in the pre-installation hole. Thus, a sapphire insulator metal shell is obtained.

[0015] As a preferred embodiment of the processing technology of the sapphire insulator metal shell of the present invention, wherein: the metal in Step One is one or a mixture of aluminum, copper, iron, alloy, steel, chromium, stainless steel, tungsten, tungsten copper, molybdenum copper, etc., and the heating temperature of the metal is 3450°C - 3500°C.

[0016] As a preferred embodiment of the processing technology of the sapphire insulator metal shell of the present invention, wherein: the heating temperature of the sapphire in Step Five is 2400°C - 2500°C, the heating temperature of the toughening agent in Step Five is 500°C - 600°C, and the heating temperature of the wear-resistant agent in Step Five is 3000°C - 3100°C.

[0017] As a preferred embodiment of the processing technology of the sapphire insulator metal shell of the present invention, wherein: the raw materials of the toughening agent include, by weight: 4 - 6 parts of polystyrene, 4 - 6 parts of polycarbonate, 4 - 6 parts of polyphenylene ether, 2 - 6 parts of glass fiber reinforced plastic, 2 - 4 parts of carbon fiber, and 2 - 4 parts of polyurethane resin.

[0018] As a preferred embodiment of the processing technology of the sapphire insulator metal shell of the present invention, wherein: the preparation process of the toughening agent is as follows:

[0019] Process One: Mix polystyrene, polycarbonate, and polyphenylene ether.

[0020] Process Two: Mix glass fiber reinforced plastic and carbon fiber.

[0021] Process Three: Mix polyurethane resin, the mixture in Process One, and the mixture in Process Two to obtain a toughening agent.

[0022] As a preferred embodiment of the processing technology of the sapphire insulator metal shell of the present invention, wherein: the mixing temperature in Process One is 300°C - 350°C, and the mixing time is 8 min - 12 min; the mixing temperature in Process Two is 300°C - 350°C, and the mixing time is 8 min - 10 min; the mixing temperature in Process Three is 300°C - 350°C, and the mixing time is 4 min - 6 min.

[0023] As a preferred embodiment of the processing technology of the metal shell of the sapphire insulator described in the present invention, wherein: the raw materials of the wear-resistant agent include, by weight: 2 parts - 6 parts of high molecular polyethylene, 4 parts - 8 parts of polyurethane resin, 2 parts - 4 parts of diatomaceous earth, 4 parts - 6 parts of ethylene propylene rubber, 4 parts - 6 parts of nitrile rubber, 2 parts - 4 parts of zirconia ceramics, and 2 parts - 4 parts of silicon nitride.

[0024] As a preferred embodiment of the processing technology of the metal shell of the sapphire insulator described in the present invention, wherein: the preparation process of the wear-resistant agent is as follows:

[0025] Process 1: Mix high molecular polyethylene, polyurethane resin and diatomaceous earth;

[0026] Process 2: Mix ethylene propylene rubber and nitrile rubber;

[0027] Process 3: Mix zirconia ceramics and silicon nitride;

[0028] Process 4: Mix the mixture in Process 1, the mixture in Process 2 and the mixture in Process 3 to obtain the wear-resistant agent.

[0029] As a preferred embodiment of the processing technology of the metal shell of the sapphire insulator described in the present invention, wherein: the mixing temperature in Process 1 is 400°C - 450°C, and the mixing time is 8 min - 12 min; the mixing temperature in Process 2 is 400°C - 450°C, and the mixing time is 6 min - 12 min.

[0030] As a preferred embodiment of the processing technology of the metal shell of the sapphire insulator described in the present invention, wherein: the mixing temperature in Process 3 is 2900°C - 3000°C, and the mixing time is 6 min - 8 min; the mixing temperature in Process 4 is 300°C - 350°C, and the mixing time is 1 min - 2 min.

[0031] Compared with the prior art:

[0032] By setting a sapphire insulator in the metal shell, it can solve the problem that the currently selected insulating medium cannot withstand ultra-high withstand voltage, and thus can greatly improve the connection performance between the packaging shell structures. In addition, by selecting sapphire, toughening agent and wear-resistant agent as raw materials and then mixing them in a certain proportion, it can improve the wear resistance and toughness of the sapphire insulator, thereby improving the service life of the sapphire insulator. Specific embodiments

[0033] To make the purpose, technical solutions and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below.

[0034] Example 1:

[0035] The present invention provides a processing technology for the metal shell of a sapphire insulator, and the specific steps are as follows:

[0036] Step 1: Heat the metal until it becomes liquid. At this time, pour the molten metal into the shell mold so that the molten metal solidifies in the shell mold to obtain a metal shell casting. Among them, the metal is one or a mixture of aluminum, copper, iron, alloy, steel, chromium, stainless steel, tungsten, tungsten copper, molybdenum copper, etc., and the heating temperature of the metal is 3450 °C;

[0037] Step 2: Perform drilling operations on the obtained metal shell casting to obtain pre-installation holes;

[0038] Step 3: Place the metal shell casting into a vacuum chamber and deposit a pure metal film on the outer surface of the metal shell casting by means of PVD coating;

[0039] Step 4: Take out the coated metal shell casting from the vacuum chamber and perform anodic oxidation on the pure metal film on the metal shell casting to form a metal oxide film layer;

[0040] Step 5: Heat the sapphire until it becomes liquid. Then heat the toughening agent and the wear-resistant agent until they become liquid. After that, mix the liquid sapphire, the liquid toughening agent, and the liquid wear-resistant agent to obtain the insulator material. Among them, the heating temperature of the sapphire is 2400 °C, the heating temperature of the toughening agent is 500 °C, and the heating temperature of the wear-resistant agent is 3000 °C;

[0041] The raw materials of the toughening agent include, by weight: 4 parts of polystyrene, 4 parts of polycarbonate, 4 parts of polyphenylene ether, 2 parts of glass fiber reinforced plastic, 2 parts of carbon fiber, and 2 parts of polyurethane resin;

[0042] The preparation process of the toughening agent is as follows:

[0043] Process 1: Mix polystyrene, polycarbonate, and polyphenylene ether. Among them, the mixing temperature is 300 °C and the mixing time is 8 min;

[0044] Process 2: Mix glass fiber reinforced plastic and carbon fiber. Among them, the mixing temperature is 300 °C and the mixing time is 8 min;

[0045] Process 3: Mix polyurethane resin, the mixture in Process 1, and the mixture in Process 2 to obtain the toughening agent. Among them, the mixing temperature is 300 °C and the mixing time is 4 min;

[0046] The raw materials of the wear-resistant agent include, by weight: 2 parts of high molecular polyethylene, 4 parts of polyurethane resin, 2 parts of diatomite, 4 parts of ethylene-propylene rubber, 4 parts of nitrile rubber, 2 parts of zirconia ceramics, and 2 parts of silicon nitride;

[0047] The preparation process of the wear-resistant agent is as follows:

[0048] Process 1: Mix high molecular polyethylene, polyurethane resin, and diatomite. Among them, the mixing temperature is 400 °C and the mixing time is 8 min;

[0049] Process 2: Mix ethylene-propylene rubber and nitrile rubber. Among them, the mixing temperature is 400 °C and the mixing time is 6 min;

[0050] Process 3: Mix zirconia ceramics and silicon nitride. Among them, the mixing temperature is 2900 °C and the mixing time is 6 min;

[0051] Process 4: Mix the mixture in Process 1, the mixture in Process 2, and the mixture in Process 3 to obtain the wear-resistant agent. Among them, the mixing temperature is 300 °C and the mixing time is 1 min;

[0052] Step 6: Place the liquid insulator material in the insulator mold so that the liquid insulator material solidifies in the insulator mold to obtain the sapphire insulator;

[0053] Step 7: Fix the sapphire insulator in the pre-installation hole. Thus, the sapphire insulator metal shell is obtained.

[0054] Example 2:

[0055] The present invention provides a processing technology for a sapphire insulator metal shell, including the following specific steps:

[0056] Step 1: Heat the metal until it becomes liquid. At this time, pour the molten metal into the shell mold so that the molten metal solidifies and forms a metal shell casting in the shell mold. Among them, the metal is one or a mixture of aluminum, copper, iron, alloy, steel, chromium, stainless steel, tungsten, tungsten copper, molybdenum copper, etc., and the heating temperature of the metal is 3475 °C;

[0057] Step 2: Perform a drilling operation on the obtained metal shell casting to obtain a pre-installation hole;

[0058] Step 3: Place the metal shell casting in a vacuum chamber and deposit a pure metal film on the outer surface of the metal shell casting by PVD coating;

[0059] Step 4: Take out the metal shell casting coated with the film from the vacuum chamber and perform anodic oxidation on the pure metal film on the metal shell casting to form a metal oxide film layer;

[0060] Step 5: Heat the sapphire until it becomes liquid, then heat the toughening agent and wear-resistant agent until they become liquid. After that, mix the liquid sapphire, liquid toughening agent, and liquid wear-resistant agent to obtain the insulator material. Among them, the heating temperature of the sapphire is 2450 °C, the heating temperature of the toughening agent is 550 °C, and the heating temperature of the wear-resistant agent is 3050 °C;

[0061] The raw materials of the toughening agent include, by weight: 5 parts of polystyrene, 5 parts of polycarbonate, 5 parts of polyphenylene ether, 4 parts of glass fiber reinforced plastic, 3 parts of carbon fiber, and 3 parts of polyurethane resin;

[0062] The preparation process of the toughening agent is as follows:

[0063] Process 1: Mix polystyrene, polycarbonate, and polyphenylene ether. Among them, the mixing temperature is 325 °C and the mixing time is 10 min;

[0064] Process 2: Mix glass fiber reinforced plastic and carbon fiber. Among them, the mixing temperature is 320 °C and the mixing time is 9 min;

[0065] Process 3: Mix polyurethane resin, the mixture in Process 1, and the mixture in Process 2 to obtain the toughening agent. Among them, the mixing temperature is 325 °C and the mixing time is 5 min;

[0066] The raw materials of the wear-resistant agent include, by weight: 4 parts of high molecular polyethylene, 6 parts of polyurethane resin, 3 parts of diatomaceous earth, 5 parts of ethylene-propylene rubber, 5 parts of nitrile rubber, 3 parts of zirconia ceramics, and 3 parts of silicon nitride;

[0067] The preparation process of the wear-resistant agent is as follows:

[0068] Process 1: Mix high molecular polyethylene, polyurethane resin, and diatomaceous earth. Among them, the mixing temperature is 425 °C and the mixing time is 10 min;

[0069] Process 2: Mix ethylene-propylene rubber and nitrile rubber. Among them, the mixing temperature is 425 °C and the mixing time is 9 min;

[0070] Process 3: Mix zirconia ceramics and silicon nitride. Among them, the mixing temperature is 2950 °C and the mixing time is 7 min;

[0071] Process 4: Mix the mixture in Process 1, the mixture in Process 2, and the mixture in Process 3 to obtain the wear-resistant agent. Among them, the mixing temperature is 325 °C and the mixing time is 1.5 min;

[0072] Step 6: Place the liquid insulator material in the insulator mold so that the liquid insulator material solidifies in the insulator mold to obtain a sapphire insulator;

[0073] Step 7: Fix the sapphire insulator in the pre-installation hole. Thus, a sapphire insulator metal shell is obtained.

[0074] Example 3:

[0075] The present invention provides a processing technology for a sapphire insulator metal shell, including the following specific steps:

[0076] Step 1: Heat the metal until it becomes liquid. At this time, pour the molten metal into the shell mold so that the molten metal solidifies in the shell mold to obtain a metal shell casting. Among them, the metal is one or a mixture of aluminum, copper, iron, alloy, steel, chromium, stainless steel, tungsten, tungsten copper, molybdenum copper, and the heating temperature of the metal is 3500 °C;

[0077] Step 2: Perform drilling operations on the obtained metal shell casting to obtain pre-installation holes;

[0078] Step 3: Place the metal shell casting in a vacuum chamber and deposit a pure metal film on the outer surface of the metal shell casting by PVD coating;

[0079] Step 4: Take out the coated metal shell casting from the vacuum chamber and perform anodic oxidation on the pure metal film on the metal shell casting to form a metal oxide film layer;

[0080] Step 5: Heat the sapphire until it becomes liquid. Then heat the toughening agent and the wear-resistant agent until they become liquid. After that, mix the liquid sapphire, the liquid toughening agent, and the liquid wear-resistant agent to obtain an insulator material. Among them, the heating temperature of the sapphire is 2500 °C, the heating temperature of the toughening agent is 600 °C, and the heating temperature of the wear-resistant agent is 3100 °C;

[0081] The raw materials of the toughening agent include, by weight: 6 parts of polystyrene, 6 parts of polycarbonate, 6 parts of polyphenylene ether, 6 parts of glass fiber reinforced plastic, 4 parts of carbon fiber, and 4 parts of polyurethane resin;

[0082] The preparation process of the toughening agent is as follows:

[0083] Process 1: Mix polystyrene, polycarbonate, and polyphenylene ether. Among them, the mixing temperature is 350 °C and the mixing time is 12 min;

[0084] Process 2: Mix glass fiber reinforced plastic and carbon fiber. Among them, the mixing temperature is 350 °C and the mixing time is 10 min;

[0085] Process 3: Mix the polyurethane resin, the mixture in Process 1, and the mixture in Process 2 to obtain a toughening agent, where the mixing temperature is 350 °C and the mixing time is 6 min;

[0086] The raw materials of the wear-resistant agent include, by weight: 6 parts of high molecular polyethylene, 8 parts of polyurethane resin, 4 parts of diatomaceous earth, 6 parts of ethylene-propylene rubber, 6 parts of nitrile rubber, 4 parts of zirconia ceramics, and 4 parts of silicon nitride;

[0087] The preparation process of the wear-resistant agent is as follows:

[0088] Process 1: Mix the high molecular polyethylene, polyurethane resin, and diatomaceous earth, where the mixing temperature is 450 °C and the mixing time is 12 min;

[0089] Process 2: Mix the ethylene-propylene rubber and nitrile rubber, where the mixing temperature is 450 °C and the mixing time is 12 min;

[0090] Process 3: Mix the zirconia ceramics and silicon nitride, where the mixing temperature is 3000 °C and the mixing time is 8 min;

[0091] Process 4: Mix the mixture in Process 1, the mixture in Process 2, and the mixture in Process 3 to obtain a wear-resistant agent, where the mixing temperature is 350 °C and the mixing time is 2 min;

[0092] Step 6: Place the liquid insulator material in an insulator mold so that the liquid insulator material solidifies in the insulator mold to obtain a sapphire insulator;

[0093] Step 7: Fix the sapphire insulator in the pre-installation hole. Thus, a sapphire insulator metal shell is obtained.

[0094] Compare the insulators prepared in the above Examples 1-3 to obtain the following data:

[0095] Example 1 Example 2 Example 3 Wear resistance coefficient 84 g / cm 90 g / cm 86 g / cm Toughness <![CDATA[150J / cm 2 > <![CDATA[230 J / cm 2 > <![CDATA[200 J / cm 2 >

[0096] As can be seen from the above table, the insulators prepared in Examples 1-3 have good performance in terms of wear resistance coefficient and toughness. After use, the effect of Example 2 is the best.

[0097] Although the present invention has been described above with reference to the embodiments, various modifications can be made thereto and components thereof can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed by the present invention can be combined with each other in any way, and the exhaustive description of these combinations is not given in this specification only for the consideration of saving space and resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A sapphire insulator metal shell processing technology, characterized in that: The specific steps are as follows: Step 1: heating the metal until it is liquid, then pouring the molten metal into the shell mold so that the molten metal solidifies in the shell mold to obtain a metal shell casting; Step 2: drilling the obtained metal housing casting to obtain pre-installation holes; Step 3: placing the metal shell casting into a vacuum chamber, and coating the outer surface of the metal shell casting with a pure metal film by PVD coating; Step 4: taking out the coated metal shell casting from the vacuum chamber, and anodizing the pure metal film on the metal shell casting to form a metal oxide film layer; Step 5: heating the sapphire until the sapphire is in liquid form, then heating the toughening agent and the wear-resistant agent until the toughening agent and the wear-resistant agent are in liquid form, and then mixing the liquid sapphire, the liquid toughening agent and the liquid wear-resistant agent to obtain an insulator material; Step 6: placing the liquid insulator material in the insulator mold, so that the liquid insulator material solidifies in the insulator mold to obtain a sapphire insulator; Step 7: Fix the sapphire insulator in the pre-installed hole. At this point, the metal shell of the sapphire insulator is obtained.

2. The sapphire insulator metal shell processing process according to claim 1 is characterized in that: In the step 1, the metal is one or more mixtures of aluminum, copper, iron, alloy, steel, chromium, stainless steel, tungsten, tungsten-copper, molybdenum-copper, and the heating temperature of the metal is 3450°C-3500°C.

3. The sapphire insulator metal shell processing process according to claim 1 is characterized in that: The heating temperature of the sapphire in the step five is 2400°C-2500°C, the heating temperature of the toughening agent in the step five is 500°C-600°C, and the heating temperature of the wear-resistant agent in the step five is 3000°C-3100°C.

4. The sapphire insulator metal shell processing process according to claim 1, characterized in that: The raw materials of the toughening agent include, by weight: 4-6 parts of polystyrene, 4-6 parts of polycarbonate, 4-6 parts of polyphenylene ether, 2-6 parts of glass fiber reinforced plastic, 2-4 parts of carbon fiber, and 2-4 parts of polyurethane resin.

5. The sapphire insulator metal shell processing process according to claim 4 is characterized in that: The preparation process of the toughening agent is as follows: Process 1: Mixing polystyrene, polycarbonate and polyphenylene ether; Process 2: Mixing glass fiber reinforced plastic and carbon fiber; Process 3: The polyurethane resin, the mixture in process 1 and the mixture in process 2 are mixed to obtain a toughening agent.

6. The sapphire insulator metal shell processing process according to claim 5, characterized in that: The mixing temperature in the process one is 300°C-350°C, and the mixing time is 8min-12min; the mixing temperature in the process two is 300°C-350°C, and the mixing time is 8min-10min; the mixing temperature in the process three is 300°C-350°C, and the mixing time is 4min-6min.

7. The sapphire insulator metal shell processing process according to claim 1, characterized in that: The raw materials of the wear-resistant agent include, by weight: 2-6 parts of high molecular polyethylene, 4-8 parts of polyurethane resin, 2-4 parts of diatomaceous earth, 4-6 parts of ethylene-propylene rubber, 4-6 parts of nitrile rubber, 2-4 parts of zirconia ceramics, and 2-4 parts of silicon nitride.

8. The sapphire insulator metal shell processing process according to claim 7 is characterized in that: The preparation process of the wear-resistant agent is as follows: Process 1: Mixing high molecular weight polyethylene, polyurethane resin and diatomaceous earth; Process 2: Mixing EPDM rubber and nitrile rubber; Process 3: Mixing zirconium oxide ceramic and silicon nitride; Process 4: Mix the mixture in process 1, the mixture in process 2 and the mixture in process 3 to obtain an anti-wear agent.

9. The sapphire insulator metal shell processing process according to claim 8, characterized in that: The mixing temperature in the process one is 400° C.-450° C., and the mixing time is 8 min-12 min; the mixing temperature in the process two is 400° C.-450° C., and the mixing time is 6 min-12 min.

10. The sapphire insulator metal shell processing process according to claim 8, characterized in that: The mixing temperature in the process three is 2900° C.-3000° C., and the mixing time is 6 min-8 min; the mixing temperature in the process four is 300° C.-350° C., and the mixing time is 1 min-2 min.