CN105666061A - Preparation process for radiator good in sealing performance - Google Patents
Preparation process for radiator good in sealing performance Download PDFInfo
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- CN105666061A CN105666061A CN201610164950.7A CN201610164950A CN105666061A CN 105666061 A CN105666061 A CN 105666061A CN 201610164950 A CN201610164950 A CN 201610164950A CN 105666061 A CN105666061 A CN 105666061A
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- die casting
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- inserts
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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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- 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
- B23P2700/00—Indexing scheme relating to the articles being treated, e.g. manufactured, repaired, assembled, connected or other operations covered in the subgroups
- B23P2700/10—Heat sinks
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
- Continuous Casting (AREA)
Abstract
The invention discloses a preparation process for a radiator good in sealing performance. The preparation process comprises the steps of preparing die casting aluminum alloy and an insert. A first annular groove is formed in the horizontal contact surface of the insert and the die casting aluminum alloy. A second annular groove is formed in the vertical contact surface of the insert and the die casting aluminum alloy. A first annular protrusion is arranged in the position, matched with the first annular groove, of the die casting aluminum alloy. A second annular protrusion is arranged in the position, matched with the second annular groove, of the die casting aluminum alloy. Preparation of the die casting aluminum alloy and the insert comprises the following steps of raw material smelting, die casting, machining, cleaning and packing, and cleaning and packing are conducted after machining is completed and the die casting aluminum alloy and the insert are qualified after being subjected to leakage testing. According to the preparation process for the radiator good in sealing performance, leakage testing is conducted under the condition of 0.2 MPa air pressure, and leakage is avoided, so that the leakage problem of a part inlaid with the insert in the aluminum alloy die casting industry is solved; the requirements for the sealing performance, the heat dissipation performance, the mechanical strength and other performances in the using process of the radiator can be met, the maintenance cost is reduced, the production efficiency is high, and the market competitiveness is very high.
Description
Technical field
The present invention relates to scatterer manufacturing technology field, specifically the scatterer preparation technology of a kind of good seal performance.
Background technology
Scatterer primarily of main, hydroecium, side plate, radiating pipe, the composition such as heat-radiation belt, the leakage rate of existing scatterer reaches 40%, and condemnation factor reaches 30%, greatly reduces qualification rate, and impact uses; Up to now, Die Casting Industry does not adopt aluminium alloy or red copper use the precedent in the die-cast product of seal request as inserts, as shown in Figure 1, just aluminium alloy or red copper inserts are applied in the diecast parts not having sealing requirements at most, the difficult point of this technique is that bi-material cannot merge in press casting procedure, causes die casting part out can leak when lumen loading high pressure medium; Prior art cannot solve sealing problem, can only be used for not having in the diecast parts of sealing requirements, significantly limit the range of application of product and cost cutting, and its basic reason is: the first, and the contact area of inserts and aluminium diecast alloy is less; 2nd, in press casting procedure, aluminium alloy solution, mould and inserts temperature are not high enough, cause inserts and aluminium diecast alloy stickiness poor, exist and small gap; 3rd, during die casting, product mould remaining time is short, and during die sinking, the traction force of part is caused the gap between inserts and aluminium diecast alloy bigger by mould; For these reasons, it is necessary to propose new preparation technology to improve the sealing property of scatterer, to meet user demand.
Summary of the invention
It is an object of the invention to provide the scatterer preparation technology of a kind of good seal performance, to solve the leakage problem of the part studding with aluminium alloy or red copper inserts in aluminium alloy compression casting industry, greatly reduce manufacturing cost, it is to increase production efficiency.
For achieving the above object, the present invention provides following technical scheme:
The scatterer preparation technology of a kind of good seal performance, comprise and prepare aluminium diecast alloy and inserts, described inserts is provided with the first annular recesses with the horizontal contact face of aluminium diecast alloy, on inserts, vertical contact surface with aluminium diecast alloy is provided with second ring groove, the position of aluminium diecast alloy and the first annular recesses adaptation is provided with the first annular protrusion, and it is protruding that the position of aluminium diecast alloy and second ring groove adaptation is provided with second ring; The preparation of aluminium diecast alloy and inserts comprises the following steps:
(1) starting material melting: starting material are AlSi12Fe, aluminium ingot adopts 100% virgin material, after throwing material, igniting is stirred, and adds slagging agent and smelting agent, aluminium water temp controls at 720 DEG C-760 DEG C, after inspection chemical composition is qualified, goes out aluminium water, it is transported to air-removal equipment and carries out degassing processing, sampling hydrogen meter checks degassing effect, is transported to pressure die-casting machine holding furnace and is incubated after qualified;
(2) die casting: select 340T cloth to strangle pressure die-casting machine and carry out die casting, die heater is adopted to heat active and inactive mold, control die temperature is 300 ± 5 DEG C, aluminium water temp controls at 705 ± 5 DEG C, the drift of φ 70 is selected to carry out die casting, inserts carries out 100 DEG C of thermal pretreatment simultaneously, and die casting step comprises: low speed die casting, high speed die casting and supercharging die casting;
(3) machining: selecting four axle campstool gram processing centers, cutting fluid concentration controls to carry out machining at 6%-10%, comprises following procedure of processing:
3.1) the big plane A reference plane in milling upper end: rough mill employingFacing cut cutter, rotating speed S7000, boring feeding F4000; Essence milling adoptsFacing cut cutter, rotating speed S7000, boring feeding F1000;
3.2) milling upper end M4 threaded hole: bore bottom outlet and adoptBore angle cutter, rotating speed S360, boring feeding F150; Attack screw thread and adopt M4 screw tap, rotating speed S1000, boring feeding F0.7;
3.3) milling side NPT screw thread: thread milling end face adoptsMilling cutter, rotating speed S6000, boring feeding F800; Attack NPT screw thread and adopt NPT milling cutter, rotating speed S3500, boring feeding F500;
3.4) milling B reference plane: adoptMilling cutter, rotating speed S2000, boring feeding F600;
3.5) milling C reference plane: adoptMilling cutter, rotating speed S2000, boring feeding F600;
3.6) milling bottom surface cruciform protuberance: adoptMilling cutter, rotating speed S6000, boring feeding F600;
3.7) milling bottom surface M4 threaded hole: bore bottom outlet and adoptBore angle cutter, rotating speed S360, boring feeding F150; Attack screw thread and adopt M4 screw tap, rotating speed S1000, boring feeding F0.7;
3.8) milling bottom surface boss: boss is provided with 8, rough mills employingMilling cutter, rotating speed S8000, boring feeding F1800; Essence milling adoptsMilling cutter, rotating speed S8000, boring feeding F450;
(4) leak-testing: by the first annular recesses on inserts and the first convex annular card lifting conjunction on aluminium diecast alloy, second ring groove and second ring projection card close the sealing realizing inserts and aluminium diecast alloy and fix, in 0.2MPa air pressure conditions, dwell time >=1min when, carrying out water pressure testing leak-testing, bubble-free is qualified;
(5) clean: adopting Ultrasonic Cleaners to be cleaned by qualified product, temperature is drenched in spray and cleaning temperature controls at 50 ± 15 DEG C, and drying tunnel temperature controls at 75 ± 15 DEG C, and scavenging solution adopts PWC-001, and concentration is controlled to 0.5%-2%, and pH value is controlled to 7-9;
(6) pack: the product after cleaning carries out outward appearance detection under incandescent light irradiates, detect qualified rear employing bubble bags and pack.
As the scheme that the present invention is further: in described step 2, casting pressure is 850bar, barrel useful length is 441mm, and material handle thickness is 20 ± 5mm, and mould remaining time is 6s.
As the present invention's further scheme: in described step 2, low speed die casting comprises the following steps:
A. punch stroke is to 100mm, speed 0.1m/s;
B. punch stroke is to 190mm, speed 0.25m/s;
C. punch stroke is to 320mm, speed 0.3m/s.
As the present invention's further scheme: in described step 2, high speed combined stroke are 65mm, and high speed die casting comprises the following steps:
A. punch stroke is to 355mm, speed 3.5m/s;
B. punch stroke is to 400mm brake, and speed reduces to 2.0m/s.
As the present invention's further scheme: in described step 2, supercharging is die cast as when punch stroke starts boost control switching to 401mm, and supercharging 180bar, supercharging time of lag is 0.02s.
Compared with prior art, be the invention has the beneficial effects as follows: the present invention is embedded in aluminium diecast alloy aluminium alloy or red copper inserts in press casting procedure, in order to increase the contact area of inserts and aluminium diecast alloy, also it is the distance in order to extend leak-testing medium flowing simultaneously, reduce the possibility leaked, inserts adds 2 annular recessess, it is respectively the first annular recesses and second ring groove, first annular recesses is arranged on the horizontal contact face of inserts and aluminium diecast alloy, and second ring groove is arranged on the vertical contact surface of inserts and aluminium diecast alloy;In order to improve the amalgamation of inserts and aluminium diecast alloy, taking following measure: heated by die casting with die heater, temperature controls at 300 ± 5 DEG C; Control die casting aluminium liquid temp is between 700-710 DEG C; Mould remaining time was extended to 6 seconds from 3 seconds; Inserts is carried out 100 DEG C of thermal pretreatment, then inserts is put in aluminium diecast alloy; Product prepared by the present invention carries out leak-testing No leakage under 0.2MPa air pressure conditions, solves the leakage problem of the part studding with inserts in aluminium alloy compression casting industry; The performance requriementss such as the sealing in scatterer use procedure, heat radiation, physical strength can be met; Greatly reducing scatterer condemnation factor, the manufacturing cost of reduction scatterer, and production efficiency height, the market competitiveness is extremely strong.
Accompanying drawing explanation
Fig. 1 is the installation structure sectional view of inserts and aluminium diecast alloy in prior art.
Fig. 2 is the installation structure sectional view of inserts and aluminium diecast alloy in the present invention.
Fig. 3 is the structure for amplifying schematic diagram of part A in Fig. 2.
Fig. 4 is the perspective view of inserts in the present invention.
Fig. 5 is the front perspective view of the present invention.
Fig. 6 is the back side perspective view of the present invention.
Wherein, the big plane A reference plane in 1-upper end; 2-upper end M4 threaded hole; 3-side NPT screw thread; 4-B reference plane; 5-C reference plane; 6-bottom surface cruciform protuberance; 7-bottom surface M4 threaded hole; Recessed of 8-bottom surface; 11-aluminium diecast alloy; 22-inserts; 33-first annular recesses; 44-second ring groove; 55-first annular protrusion; 66-second ring is protruding.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only the present invention's part embodiment, instead of whole embodiments. Based on the embodiment in the present invention, those of ordinary skill in the art, not making other embodiments all obtained under creative work prerequisite, belong to the scope of protection of the invention.
Refer to Fig. 1～6, in the embodiment of the present invention, the scatterer preparation technology of a kind of good seal performance, comprise and prepare aluminium diecast alloy 11 and inserts 22, inserts 22 is provided with the first annular recesses 33 with the horizontal contact face of aluminium diecast alloy 11, vertical contact surface is provided with second ring groove 44, and the position of aluminium diecast alloy 11 and the first annular recesses 33 adaptation is provided with the first annular protrusion 55, and the position of aluminium diecast alloy 11 and second ring groove 44 adaptation is provided with second ring projection 66; The preparation of aluminium diecast alloy 11 and inserts 22 comprises the following steps:
(1) starting material melting: described starting material are AlSi12Fe, aluminium ingot adopts 100% virgin material, after throwing material, igniting is stirred, and adds slagging agent and smelting agent, aluminium water temp controls at 720 DEG C-760 DEG C, after inspection chemical composition is qualified, goes out aluminium water, it is transported to air-removal equipment and carries out degassing processing, sampling hydrogen meter checks degassing effect, is transported to pressure die-casting machine holding furnace and is incubated after qualified;
(2) die casting: select 340T cloth to strangle pressure die-casting machine and carry out die casting, die heater is adopted to heat active and inactive mold, control die temperature is 300 ± 5 DEG C, and aluminium water temp controls at 705 ± 5 DEG C, selects the drift of φ 70 to carry out die casting, inserts is carried out 100 DEG C of thermal pretreatment simultaneously, casting pressure is 850bar, and barrel useful length is 441mm, and material handle thickness is 20 ± 5mm, mould remaining time is 6s, and die casting step comprises:
2.1) low speed die casting:
A. punch stroke is to 100mm, speed 0.1m/s;
B. punch stroke is to 190mm, speed 0.25m/s;
C. punch stroke is to 320mm, speed 0.3m/s;
2.2) high speed die casting:
A. punch stroke is to 355mm, speed 3.5m/s;
B. punch stroke is to 400mm brake, and speed reduces to 2.0m/s;
C. high speed combined stroke: 65mm;
2.3) supercharging die casting: when punch stroke starts boost control switching to 401mm, supercharging 180bar, supercharging time of lag is 0.02s;
(3) machining: selecting four axle campstool gram processing centers, cutting fluid concentration controls to carry out machining at 6%-10%, comprises following procedure of processing:
3.1) the big plane A reference plane 1 in milling upper end: rough mill employingFacing cut cutter, rotating speed S7000, boring feeding F4000; Essence milling adoptsFacing cut cutter, rotating speed S7000, boring feeding F1000;
3.2) milling upper end M4 threaded hole 2: bore bottom outlet and adoptBore angle cutter, rotating speed S360, boring feeding F150; Attack screw thread and adopt M4 screw tap, rotating speed S1000, boring feeding F0.7;
3.3) milling side NPT screw thread 3: thread milling end face adoptsMilling cutter, rotating speed S6000, boring feeding F800; Attack NPT screw thread and adopt NPT milling cutter, rotating speed S3500, boring feeding F500;
3.4) milling B reference plane 4: adoptMilling cutter, rotating speed S2000, boring feeding F600;
3.5) milling C reference plane 5: adoptMilling cutter, rotating speed S2000, boring feeding F600;
3.6) milling bottom surface cruciform protuberance 6: adoptMilling cutter, rotating speed S6000, boring feeding F600;
3.7) milling bottom surface M4 threaded hole 7: bore bottom outlet and adoptBore angle cutter, rotating speed S360, boring feeding F150; Attack screw thread and adopt M4 screw tap, rotating speed S1000, boring feeding F0.7;
3.8) milling bottom surface boss 8: boss 8 is provided with 8, rough mills employingMilling cutter, rotating speed S8000, boring feeding F1800; Essence milling adoptsMilling cutter, rotating speed S8000, boring feeding F450;
(4) leak-testing: the first annular recesses 33 on inserts 22 is blocked conjunction with the first annular protrusion 55 on aluminium diecast alloy 11, second ring groove 44 and protruding 66 cards of second ring close the sealing realizing inserts 22 and aluminium diecast alloy 11 and fix, in 0.2MPa air pressure conditions, dwell time >=1min when, carrying out water pressure testing leak-testing, bubble-free is qualified;
(5) clean: adopting Ultrasonic Cleaners to be cleaned by qualified product, temperature is drenched in spray and cleaning temperature controls at 50 ± 15 DEG C, and drying tunnel temperature controls at 75 ± 15 DEG C, and scavenging solution adopts PWC-001, and concentration is controlled to 0.5%-2%, and pH value is controlled to 7-9;
(6) pack: the product after cleaning carries out outward appearance detection under incandescent light irradiates, detect qualified rear employing bubble bags and pack.
The present invention sets about from following two aspects, in press casting procedure, aluminium alloy or red copper inserts 22 is embedded in aluminium diecast alloy 11, it is possible to meet the object that product does not leak under 0.2MPa air pressure conditions:
1. in order to increase the contact area of inserts 22 with aluminium diecast alloy 11, also it is the distance in order to extend leak-testing medium flowing simultaneously, reduce the possibility leaked, inserts 11 adds 2 annular recessess, it is respectively the first annular recesses 33 and second ring groove 44, first annular recesses 33 is arranged on inserts 22 with, on the horizontal contact face of aluminium diecast alloy 11, second ring groove 44 is arranged on inserts 22 with on the vertical contact surface of aluminium diecast alloy 11;
2., in order to improve the amalgamation of inserts 22 with aluminium diecast alloy 11, take following measure:
Die casting is heated by 2.1 with die heater, and temperature controls at 300 ± 5 DEG C;
2.2 control die casting aluminium liquid temps are between 700-710 DEG C;
Mould remaining time was extended to 6 seconds from 3 seconds by 2.3;
2.4 pairs of inserts 22 carry out 100 DEG C of thermal pretreatment, then inserts 22 is put in aluminium diecast alloy 11.
To those skilled in the art, it is clear that the invention is not restricted to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit or the essential characteristic of the present invention, it is possible to realize the present invention in other specific forms. Therefore, no matter from which point, embodiment all should be regarded as exemplary, and right and wrong are restrictive, the scope of the present invention is limited by claims instead of above-mentioned explanation, it is intended that all changes in the implication of the equivalent important document dropping on claim and scope included in the present invention. Any Reference numeral in claim should be considered as the claim involved by limiting.
In addition, it is to be understood that, although this specification sheets is described according to enforcement mode, but not each enforcement mode only comprises an independent technical scheme, this kind of narrating mode of specification sheets is only for clarity sake, those skilled in the art should by specification sheets integrally, and the technical scheme in each embodiment through appropriately combined, can also form other enforcement modes that it will be appreciated by those skilled in the art that.
Claims (5)
1. the scatterer preparation technology of a good seal performance, comprise and prepare aluminium diecast alloy (11) and inserts (22), it is characterized in that: described inserts (22) horizontal contact face that is upper and aluminium diecast alloy (11) is provided with the first annular recesses (33), inserts (22) vertical contact surface that is upper and aluminium diecast alloy (11) is provided with second ring groove (44), aluminium diecast alloy (11) is provided with the first annular protrusion (55) with the position of the first annular recesses (33) adaptation, aluminium diecast alloy (11) is provided with second ring projection (66) with the position of second ring groove (44) adaptation, the preparation of aluminium diecast alloy (11) and inserts (22) comprises the following steps:
(1) starting material melting: starting material are AlSi12Fe, aluminium ingot adopts 100% virgin material, after throwing material, igniting is stirred, and adds slagging agent and smelting agent, aluminium water temp controls at 720 DEG C-760 DEG C, after inspection chemical composition is qualified, goes out aluminium water, it is transported to air-removal equipment and carries out degassing processing, sampling hydrogen meter checks degassing effect, is transported to pressure die-casting machine holding furnace and is incubated after qualified;
(2) die casting: select 340T cloth to strangle pressure die-casting machine and carry out die casting, die heater is adopted to heat active and inactive mold, control die temperature is 300 ± 5 DEG C, aluminium water temp controls at 705 ± 5 DEG C, the drift of φ 70 is selected to carry out die casting, inserts carries out 100 DEG C of thermal pretreatment simultaneously, and die casting step comprises: low speed die casting, high speed die casting and supercharging die casting;
(3) machining: selecting four axle campstool gram processing centers, cutting fluid concentration controls to carry out machining at 6%-10%, comprises following procedure of processing:
3.1) the big plane A reference plane (1) in milling upper end: rough mill employingFacing cut cutter, rotating speed S7000, boring feeding F4000; Essence milling adoptsFacing cut cutter, rotating speed S7000, boring feeding F1000;
3.2) milling upper end M4 threaded hole (2): bore bottom outlet and adoptBore angle cutter, rotating speed S360, boring feeding F150; Attack screw thread and adopt M4 screw tap, rotating speed S1000, boring feeding F0.7;
3.3) milling side NPT screw thread (3): thread milling end face adoptsMilling cutter, rotating speed S6000, boring feeding F800; Attack NPT screw thread and adopt NPT milling cutter, rotating speed S3500, boring feeding F500;
3.4) milling B reference plane (4): adoptMilling cutter, rotating speed S2000, boring feeding F600;
3.5) milling C reference plane (5): adoptMilling cutter, rotating speed S2000, boring feeding F600;
3.6) milling bottom surface cruciform protuberance (6): adoptMilling cutter, rotating speed S6000, boring feeding F600;
3.7) milling bottom surface M4 threaded hole (7): bore bottom outlet and adoptBore angle cutter, rotating speed S360, boring feeding F150; Attack screw thread and adopt M4 screw tap, rotating speed S1000, boring feeding F0.7;
3.8) milling bottom surface boss (8): boss (8) is provided with 8, rough mills employingMilling cutter, rotating speed S8000, boring feeding F1800; Essence milling adoptsMilling cutter, rotating speed S8000, boring feeding F450;
(4) leak-testing: upper to upper for inserts (22) the first annular recesses (33) and aluminium diecast alloy (11) the first annular protrusion (55) card is closed, the sealing that second ring groove (44) and second ring projection (66) card conjunction realize inserts (22) and aluminium diecast alloy (11) is fixed, in 0.2MPa air pressure conditions, dwell time >=1min when, carrying out water pressure testing leak-testing, bubble-free is qualified;
(5) clean: adopting Ultrasonic Cleaners to be cleaned by qualified product, temperature is drenched in spray and cleaning temperature controls at 50 ± 15 DEG C, and drying tunnel temperature controls at 75 ± 15 DEG C, and scavenging solution adopts PWC-001, and concentration is controlled to 0.5%-2%, and pH value is controlled to 7-9;
(6) pack: the product after cleaning carries out outward appearance detection under incandescent light irradiates, detect qualified rear employing bubble bags and pack.
2. the scatterer preparation technology of good seal performance according to claim 1, it is characterised in that, in described step 2, casting pressure is 850bar, and barrel useful length is 441mm, and material handle thickness is 20 ± 5mm, and mould remaining time is 6s.
3. the scatterer preparation technology of good seal performance according to claim 1, it is characterised in that, in described step 2, low speed die casting comprises the following steps:
A. punch stroke is to 100mm, speed 0.1m/s;
B. punch stroke is to 190mm, speed 0.25m/s;
C. punch stroke is to 320mm, speed 0.3m/s.
4. the scatterer preparation technology of good seal performance according to claim 1, it is characterised in that, in described step 2, high speed combined stroke are 65mm, and high speed die casting comprises the following steps:
A. punch stroke is to 355mm, speed 3.5m/s;
B. punch stroke is to 400mm brake, and speed reduces to 2.0m/s.
5. the scatterer preparation technology of good seal performance according to claim 1, it is characterised in that, in described step 2, supercharging is die cast as when punch stroke starts boost control switching to 401mm, and supercharging 180bar, supercharging time of lag is 0.02s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610164950.7A CN105666061B (en) | 2016-03-22 | 2016-03-22 | A kind of radiator preparation technology of good seal performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610164950.7A CN105666061B (en) | 2016-03-22 | 2016-03-22 | A kind of radiator preparation technology of good seal performance |
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| CN105666061A true CN105666061A (en) | 2016-06-15 |
| CN105666061B CN105666061B (en) | 2018-04-06 |
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| CN106181251A (en) * | 2016-08-04 | 2016-12-07 | 东莞宜安科技股份有限公司 | The screwed hole manufacture method of block terminal metal shell |
| CN109531165A (en) * | 2018-12-29 | 2019-03-29 | 苏州莱易精密机电有限公司 | A kind of dentist's chair shaped piece brill thread milling device |
| CN109696661A (en) * | 2018-12-18 | 2019-04-30 | 宁波泛德压铸有限公司 | Radar aluminium die casting shell and its production method |
| CN109877289A (en) * | 2019-01-29 | 2019-06-14 | 东莞捷荣技术股份有限公司 | Seven line aluminium alloy smallclothes of one kind and its pressure casting method |
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| CN105112736A (en) * | 2015-09-07 | 2015-12-02 | 苏州凯宥电子科技有限公司 | Die-cast aluminum alloy and preparing method thereof |
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| JP2007093025A (en) * | 2005-09-27 | 2007-04-12 | Showa Denko Kk | Heat exchanger and its manufacturing method |
| CN101538668A (en) * | 2009-04-28 | 2009-09-23 | 中铝河南铝业有限公司 | Production process of aluminum alloy hot rolling medium plate |
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| CN106181251A (en) * | 2016-08-04 | 2016-12-07 | 东莞宜安科技股份有限公司 | The screwed hole manufacture method of block terminal metal shell |
| CN109696661A (en) * | 2018-12-18 | 2019-04-30 | 宁波泛德压铸有限公司 | Radar aluminium die casting shell and its production method |
| CN109531165A (en) * | 2018-12-29 | 2019-03-29 | 苏州莱易精密机电有限公司 | A kind of dentist's chair shaped piece brill thread milling device |
| CN109877289A (en) * | 2019-01-29 | 2019-06-14 | 东莞捷荣技术股份有限公司 | Seven line aluminium alloy smallclothes of one kind and its pressure casting method |
| CN109877289B (en) * | 2019-01-29 | 2021-08-24 | 东莞捷荣技术股份有限公司 | Seven-series aluminum alloy small part and die casting method thereof |
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| Publication number | Publication date |
|---|---|
| CN105666061B (en) | 2018-04-06 |
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