CN111822952A - Method for processing aluminum-based silicon carbide launching tube - Google Patents
Method for processing aluminum-based silicon carbide launching tube Download PDFInfo
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- CN111822952A CN111822952A CN202010638106.XA CN202010638106A CN111822952A CN 111822952 A CN111822952 A CN 111822952A CN 202010638106 A CN202010638106 A CN 202010638106A CN 111822952 A CN111822952 A CN 111822952A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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Abstract
The invention provides a processing method of an aluminum-based silicon carbide launch canister, which comprises the following steps: the method comprises the following steps: roughly turning, namely roughly turning the outer circle and the inner hole of the launching tube blank according to the designed size by using a special tool, and reserving a single edge with the allowance of 2 mm; step two: the artificial aging treatment comprises the steps of heating the blank of the launching tube to 490 ℃, then preserving heat for 3 hours, then carrying out water cooling, taking out the blank of the launching tube when the temperature of the blank of the launching tube is reduced to 190 ℃, and preserving heat for 8 hours; step three: and semi-finish turning, turning the outer circle and the inner hole of the thin end of the launching tube blank, and leaving a single edge with the allowance of 0.5 mm. Has the advantages that: the aluminum-based silicon carbide launching tube is processed by adopting a brand new processing technology, residual stress in the aluminum-based silicon carbide material can be eliminated in time in the processing process, the stability of the processing size of the launching tube is ensured, the surface roughness of the launching tube can be avoided by adopting a novel cutter, the accuracy of form and position tolerance is effectively ensured, the cutter abrasion is delayed, and the practicability is good.
Description
Technical Field
The invention relates to the field of aerospace processing, in particular to a processing method of an aluminum-based silicon carbide launch canister.
Background
The aluminum-based silicon carbide is a short name for the aluminum-based silicon carbide particle reinforced composite material, fully combines different advantages of silicon carbide ceramics and metallic aluminum, and has high thermal conductivity, thermal expansion coefficient matched with a chip, small density, light weight, high hardness and high bending strength. The material is outstanding in the new generation of electronic packaging materials, meets the requirements of light weight, high density and the like of packaging, is particularly suitable for the fields of aviation, aerospace, high-speed rail, microwave and the like, is a preferred material for solving the problem of thermal management, and is particularly widely applied to the field of aerospace with higher requirements on heat resistance and deformation.
At present, a transmitting tube of a telescope installed on a satellite is generally made of aluminum-based silicon carbide, the inner structure of the transmitting tube is complex, and the diameters of all parts in the tube are different, so that the processing is complex, in addition, silicon carbide hard particles are doped in an aluminum-based silicon carbide material, and the higher the content of the silicon carbide is, the harder and more brittle the material is, so that the processing difficulty is very high, the aluminum alloy matrix of the aluminum-based silicon carbide is easily melted by using the traditional processing technology, accretion is generated, then, a cutter is worn and dulled, the roughness of the inner surface and the outer surface of the transmitting tube is reduced, and the form and position tolerance is difficult to guarantee.
Disclosure of Invention
The invention aims to solve the problems, and provides a novel method for processing an aluminum-based silicon carbide launching tube, so as to solve the problems that the processing difficulty of processing the aluminum-based silicon carbide launching tube by adopting the conventional processing technology is high, a cutter is seriously abraded, the surface of the launching tube is rough, form and position tolerance cannot be guaranteed and the like. The aluminum-based silicon carbide launching tube provided by the invention is processed by adopting a brand new processing technology, the residual stress in the aluminum-based silicon carbide material can be eliminated in time in the processing process, the stability of the processing size of the launching tube is ensured, the surface roughness of the launching tube can be avoided by adopting a novel cutter, the accuracy of form and position tolerance is effectively ensured, the cutter abrasion is also delayed, the practicability is good, and details are explained in the following.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention provides a processing method of an aluminum-based silicon carbide launch canister, which comprises the following steps:
the method comprises the following steps: roughly turning, namely roughly turning the outer circle and the inner hole of the launching tube blank according to the designed size by using a special tool, and reserving a single edge with the allowance of 2 mm;
step two: the artificial aging treatment comprises the steps of heating the blank of the launching tube to 490 ℃, then preserving heat for 3 hours, then carrying out water cooling, taking out the blank of the launching tube when the temperature of the blank of the launching tube is reduced to 190 ℃, and preserving heat for 8 hours;
step three: semi-finish turning, turning the outer circle and the inner hole of the thin end of the launching tube blank, and leaving a single edge with the allowance of 0.5 mm;
step four: carrying out numerical control turning, turning the outer circle and the inner hole of the rough end of the launching tube blank, and leaving a single edge allowance of 0.5 mm;
step five: carrying out artificial aging treatment;
step six: finely turning, namely finely turning the outer circle and the inner hole of the blank of the launching tube;
step seven: electric spark, using electric spark to process the inner hole:
step eight: deburring, namely deburring by using deburring pliers to remove burrs in the inner hole;
step nine: and (5) checking, namely checking whether the size of the finished launching tube is qualified or not by contrasting with a processing drawing.
As an important design of the scheme, stress relief treatment is carried out on the blank of the launching tube before the first step.
As the optimized design of the scheme, the turning tool in the first step and the fourth step is an ultrafine particle hard alloy tool; and the turning tool in the third step and the sixth step is a diamond tool.
As the optimization design of the scheme, in the first step, the rotating speed of the main shaft is 800r/min, the tool consumption is 0.2mm, and the feeding speed is 0.1 mm/r.
As the optimization design of the scheme, the rotating speed of the main shaft in the third step is 1200r/min, the tool consumption is 0.1mm, and the feeding speed is 0.05 mm/r.
As the optimization design of the scheme, in the sixth step, the rotating speed of the main shaft is 2000r/min, the tool consumption is 0.05mm, and the feeding speed is 0.01 mm/r.
Has the advantages that: the aluminum-based silicon carbide launching tube is processed by adopting a brand new processing technology, residual stress in the aluminum-based silicon carbide material can be eliminated in time in the processing process, the stability of the processing size of the launching tube is ensured, the surface roughness of the launching tube can be avoided by adopting a novel cutter, the accuracy of form and position tolerance is effectively ensured, the cutter abrasion is delayed, and the practicability is good.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of a launch barrel blank of the present invention;
FIG. 2 is a schematic structural view of the rough-turned launch canister of the present invention;
FIG. 3 is an internal structural view of FIG. 2;
FIG. 4 is a schematic structural view of a finely turned launch canister according to the present invention;
fig. 5 is an internal structural view of fig. 4.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
Referring to fig. 1 to 5, the method for processing the aluminum-based silicon carbide emitter tube provided by the invention comprises the following steps:
the method comprises the following steps: roughly turning, wherein the outer circle and the inner hole of a launching tube blank are roughly turned according to the designed size by using an ultrafine particle hard alloy cutter with excellent wear resistance, heat resistance, hardness and toughness on a five-axis machining center, the shape of the launching tube blank is shown in figure 1, the rotating speed of a main shaft during rough turning is 800r/min, the tool consumption is 0.2mm, the feeding speed is 0.1mm/r, and the margin of a single edge is 2 mm; in addition, before the rough turning, stress relief treatment should be performed on the launching tube blank, for example, the internal stress of the launching tube blank can be relieved by adopting a heat treatment mode, wherein the heat treatment temperature is set to 600 ℃, the heat preservation time is 6 hours, then the launching tube blank is naturally cooled to room temperature, after the stress relief treatment of the launching tube blank is completed, the two end surfaces of the launching tube blank are cut and aligned by using a wire cutting machine, then the launching tube blank with the two parallel end surfaces is placed into a five-axis machining center for rough turning, and the roughly turned launching tube is shown in fig. 2 and fig. 3;
step two: artifical ageing treatment, in order to prevent because the effect of residual stress causes the launching tube to warp, can't deliver the use, after the launching tube rough turning, need carry out dimensional stability before preparing half finish turning and handle, also be artifical ageing treatment to guarantee that the stability of size can be guaranteed in the follow-up processing, because residual stress accessible heat treatment that exists among the aluminium base carborundum material eliminates, the step of specific heat treatment is: heating the temperature of the launching tube blank to 490 ℃, then preserving the heat for 3 hours, then carrying out water cooling, taking out the launching tube blank when the temperature of the launching tube blank is reduced to 190 ℃, and preserving the heat for 8 hours; the purpose is to eliminate the stress generated in the process of processing the blank of the launching tube so as to avoid influencing the processing size precision of the launching tube;
step three: semi-finish turning, namely turning the outer circle and the inner hole of the thin end of the blank of the launching tube on a five-axis machining center, wherein the rotating speed of a main shaft is 1200r/min, the cutting depth is 0.1mm, the feeding speed is 0.05mm/r, and the single-edge allowance is 0.5 mm;
step four: carrying out numerical control turning, turning an outer circle and an inner hole of the rough end of the launching barrel blank on a five-axis machining center, and reserving a single-side allowance of 0.5 mm;
step five: carrying out artificial aging treatment;
step six: finish turning, namely finish turning the outer circle and the inner hole of the launching tube blank on a five-axis machining center, wherein the rotating speed of a main shaft is 2000r/min, the cutting depth is 0.05mm, the feeding speed is 0.01mm/r, and the finish-turned launching tube is shown in figures 4 and 5;
step seven: the electric spark is processed the internal hole with the spark machine, and processing current is 8A, because some hole aperture are too little in the launching tube, and the launching tube material is harder in addition, difficult turning, therefore this type of hole can adopt the electric spark to process:
step eight: deburring, namely deburring by using deburring pliers to remove burrs in the inner hole;
step nine: and (5) checking, namely checking whether the size of the finished launching tube is qualified or not by contrasting with a processing drawing, performing secondary processing and finishing if the size of the finished launching tube is unqualified, and offline packaging and delivering if the size of the finished launching tube is qualified.
In order to ensure that the aluminum-based silicon carbide launching tube can be rapidly and efficiently processed and simultaneously avoid the abrasion of a processing cutter, diamond cutters including a natural single crystal diamond cutter and an artificial polycrystalline diamond cutter are selected for the turning tools in the third step and the sixth step, when the diamond cutters are adopted, the radial runout, the end face circular runout and the axial runout of a main shaft of a five-axis processing center are all smaller than 0.02, otherwise, the diamond cutters are easily damaged.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (6)
1. The processing method of the aluminum-based silicon carbide launch canister is characterized by comprising the following steps:
the method comprises the following steps: roughly turning, namely roughly turning the outer circle and the inner hole of the launching tube blank according to the designed size by using a special tool, and reserving a single edge with the allowance of 2 mm;
step two: the artificial aging treatment comprises the steps of heating the blank of the launching tube to 490 ℃, then preserving heat for 3 hours, then carrying out water cooling, taking out the blank of the launching tube when the temperature of the blank of the launching tube is reduced to 190 ℃, and preserving heat for 8 hours;
step three: semi-finish turning, turning the outer circle and the inner hole of the thin end of the launching tube blank, and leaving a single edge with the allowance of 0.5 mm;
step four: carrying out numerical control turning, turning the outer circle and the inner hole of the rough end of the launching tube blank, and leaving a single edge allowance of 0.5 mm;
step five: carrying out artificial aging treatment;
step six: finely turning, namely finely turning the outer circle and the inner hole of the blank of the launching tube;
step seven: electric spark, using electric spark to process the inner hole:
step eight: deburring, namely deburring by using deburring pliers to remove burrs in the inner hole;
step nine: and (5) checking, namely checking whether the size of the finished launching tube is qualified or not by contrasting with a processing drawing.
2. The method for processing the aluminum-based silicon carbide emitter tube according to claim 1, wherein: firstly, stress relief treatment is carried out on a blank of the launching tube before the blank is processed.
3. The method for processing the aluminum-based silicon carbide emitter tube according to claim 1, wherein: the turning tool in the first step and the fourth step is an ultrafine particle hard alloy tool; and the turning tool in the third step and the sixth step is a diamond tool.
4. The method for processing the aluminum-based silicon carbide emitter tube according to claim 1, wherein: in the first step, the rotating speed of the main shaft is 800r/min, the cutting feed is 0.2mm, and the feeding speed is 0.1 mm/r.
5. The method for processing the aluminum-based silicon carbide emitter tube according to claim 1, wherein: in the third step, the rotating speed of the main shaft is 1200r/min, the feed quantity is 0.1mm, and the feed speed is 0.05 mm/r.
6. The method for processing the aluminum-based silicon carbide emitter tube according to claim 1, wherein: in the sixth step, the rotating speed of the main shaft is 2000r/min, the cutting feed is 0.05mm, and the feeding speed is 0.01 mm/r.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010638106.XA CN111822952A (en) | 2020-07-06 | 2020-07-06 | Method for processing aluminum-based silicon carbide launching tube |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115555814A (en) * | 2022-12-08 | 2023-01-03 | 西安聚能超导磁体科技有限公司 | Superconducting magnet framework processing method and superconducting magnet framework |
| CN115647732A (en) * | 2022-09-30 | 2023-01-31 | 中国科学院光电技术研究所 | Precision machining method for high-precision aluminum-based silicon carbide thin-wall shell type part |
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| JPH07115099B2 (en) * | 1987-12-18 | 1995-12-13 | 株式会社日立製作所 | Hardened ball cutting method |
| CN106271456A (en) * | 2016-09-05 | 2017-01-04 | 重庆江增船舶重工有限公司 | A kind of axle sleeve processing technique |
| CN107538622B (en) * | 2017-09-30 | 2019-01-25 | 泊头市瑞恒机械有限责任公司 | The processing method of instrument grade aluminum-base silicon carbide structural member |
| CN110788569A (en) * | 2019-10-25 | 2020-02-14 | 湖北中油科昊机械制造有限公司 | Crosshead guide sliding sleeve and machining method thereof |
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2020
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| JPH07115099B2 (en) * | 1987-12-18 | 1995-12-13 | 株式会社日立製作所 | Hardened ball cutting method |
| CN106271456A (en) * | 2016-09-05 | 2017-01-04 | 重庆江增船舶重工有限公司 | A kind of axle sleeve processing technique |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115647732A (en) * | 2022-09-30 | 2023-01-31 | 中国科学院光电技术研究所 | Precision machining method for high-precision aluminum-based silicon carbide thin-wall shell type part |
| CN115647732B (en) * | 2022-09-30 | 2024-04-19 | 中国科学院光电技术研究所 | Precision machining method for high-precision aluminum-based silicon carbide thin-wall shell parts |
| CN115555814A (en) * | 2022-12-08 | 2023-01-03 | 西安聚能超导磁体科技有限公司 | Superconducting magnet framework processing method and superconducting magnet framework |
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Application publication date: 20201027 |