CN103753101A - Immersion hot correction method and device of die-cast blanks - Google Patents
Immersion hot correction method and device of die-cast blanks Download PDFInfo
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- CN103753101A CN103753101A CN201410020164.0A CN201410020164A CN103753101A CN 103753101 A CN103753101 A CN 103753101A CN 201410020164 A CN201410020164 A CN 201410020164A CN 103753101 A CN103753101 A CN 103753101A
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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
- B23P6/00—Restoring or reconditioning objects
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D30/00—Cooling castings, not restricted to casting processes covered by a single main group
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Abstract
The invention relates to the technical field of casting and discloses an immersion hot correction method of die-cast blanks. The method includes the steps: 1, correcting a casting which is 200 DEG C to 300 DEG C hot, with a correcting fixture; 2, immersing the correcting fixture and the casting in cooling water for fast cooling and forming. The invention further discloses an immersion hot correction method of die-cast blanks. The immersion hot correction method and device of die-cast blanks has the advantages that according to the fact that the aluminum alloy die casting features low strength and high ductility under the hot state, cooling is performed by applying correcting force and soaking with cold water, and fast forming is achieved; after hot correcting, the die-cast blank has low internal tress and never rebounds; human factors are eliminated from correcting parameters, the correcting parameters can be controlled and adjusted, and uniformity of correcting effect is guaranteed; labor intensity is reduced for workers and production efficiency is improved.
Description
Technical field
The present invention relates to casting technology field, specifically the hot straightening method of a kind of die-casting blank of immersion type and device.
Background technology
The environmental protection pressure of energy-saving and emission-reduction has in recent years promoted automobile to light-weighted trend development, makes that automobile aluminum die casting parts are integrated to function, structure complicated and the light-weighted direction of weight draw close.Many pressure casting aluminium alloy parts seldom consider that when initial design casting manufacturability causes its complex structure, wall thickness variation is large, required precision is high, to die-casting technique exploitation and production, have brought very large challenge.There is the serious defect of distortion in wall unevenness product even, irregular structure particularly.In actual production, by the methods such as adjustment of Design of Dies and extrusion process, can not solve the problem of casting deformation completely, need to correct by follow-up orthopedic technology.
The orthopedic of foundry goods is at present mainly by manually having beaten.This technique after taking out in die casting machine at foundry goods, remove after overflow launder and running channel naturally cool to room temperature, carry out orthopedic.The advantage of this technique is flexible operation, not limited by place, and fund input is low.But exactly because the factor of artificial orthopedic existence " people " causes optical force unstable, orthopedic rear product plane degree uniformity is poor, product easily struck split scrap, the production cycle is long.In orthopedic process, external force is constantly beaten foundry goods, makes foundry goods internal stress distribution inhomogeneous, and the flatness that detects at short notice foundry goods after orthopedic is qualified, places a period of time, and internal stress discharges and causes distortion that resilience occurs.
Summary of the invention
The present invention is directed to the problem of above-mentioned existence, a kind of hot straightening method of die-casting blank of immersion type is provided, utilize pack alloy part (200 ℃～300 ℃) feature that intensity is low, toughness is high under hot to carry out hot orthopedic, in orthopedic process, with cooling water, soak foundry goods, make foundry goods quick cooling and shaping when correcting simultaneously.
The present invention for achieving the above object, takes following technical scheme to be achieved:
The hot straightening method of die-casting blank of immersion type, comprises the following steps:
(1) by temperature, be that the foundry goods of 200 ℃～300 ℃ is put into orthopedic brace and carried out orthopedic;
(2) orthopedic brace is dipped into quick cooling and shaping in cooling water together with foundry goods.
The temperature that general foundry goods has just processed can meet orthopedic requirement, without extra heating.
Preferably, when orthopedic, the dwell time is 15s, and dwell pressure is 5Mpa.
Preferably, the temperature of described cooling water is no more than 45 ℃.General cooling water temperature is selected 25～45 ℃, without extra consumed energy, lowers the temperature, and also can not affect orthopedic effect.
The hot orthopedic appliance of die-casting blank that another object of the present invention is to provide a kind of immersion type, comprises frame, and described frame is provided with the orthopedic brace and the water tank that is arranged on orthopedic brace below by upper clamp assembly and lower clamp module composition; Described lower clamp assembly hangs and is fixed on frame, and described upper clamp assembly is liftably arranged on lower clamp assembly top; Described tank top is uncovered and be liftable structure.When water tank rises, orthopedic brace is immersed in below water tank level.
Preferably, described lower clamp assembly comprises base plate, be arranged on the clamp base at base plate top and be arranged on the support column of several height-adjustable in clamp base, and described base plate is hung and is connected with frame top by connecting rod.The effect of lower clamp assembly is fixedly to treat orthopedic foundry goods, and locate mode can adopt profile location or location, hole according to the structure of different foundry goods.Support column is to need orthopedic plane to arrange according to foundry goods, its role is to support relevant position, foundry goods bottom surface, and default bearing height, the flatness when each position of the large plane of foundry goods surpasses in claimed range, only need to adjust the support column height of corresponding site, its flatness is met the requirements.Support column lower end can be connected with clamp base by screw thread, the convenient height of adjusting.
Preferably, described upper clamp assembly comprises top board and several compression pressure heads that are arranged on top board bottom, and described compression pressure head is corresponding one by one with support column, and every a pair of compression pressure head and support column are on same vertical line; Described frame top is provided with cylinder, and cylinder push-rod is connected with top board, is also provided with guide frame between top board and frame.Cylinder presses down, and upper clamp assembly can produce optical force to the foundry goods being fixed on support column.
In order to guarantee that each compresses pressure head and can the relevant position of foundry goods be compressed and be conformed on support column simultaneously, compress pressure head and be designed to elastic compression pressure head, comprise guide pin bushing, the pressure head being connected with top board and be arranged on pressure head and guide pin bushing between spring.
Preferably, described water tank is connected with frame bottom by cylinder, between described water tank and frame bottom, is also provided with guiding mechanism.
Preferably, described water tank is provided with cooling water temperature automatic control system, and this system comprises temperature sensor, source of the gas, for supplying with the cooling water inlet of cooling water, for discharging coolant outlet and the controller of cooling water; Described temperature sensor is a plurality of, is arranged on diverse location in water tank; Described source of the gas is communicated with water tank bottom by tracheae, is provided with several bronchuses between water tank and tracheae, is provided with magnetic valve one between water tank and source of the gas; Described cooling water inlet and coolant outlet are separately positioned on water tank both sides, and cooling water inlet height is lower than coolant outlet height, and cooling water inlet and coolant outlet are respectively arranged with magnetic valve two and magnetic valve three; Described temperature sensor, magnetic valve one, magnetic valve two and magnetic valve three are all connected with controller.
Preferably, between described coolant outlet and cooling water inlet, be communicated with and be linked to be a loop, on this loop, be provided with cooling device.The water that coolant outlet can be flowed out is supplied in water tank by cooling water inlet after apparatus for supercooling cooling is processed, and recycles water resource.
Beneficial effect of the present invention is as follows:
The present invention utilize that aluminum alloy die casting is low in hot lower intensity, toughness is high characteristic, when optical force applies, adopt the mode of cold water soak to carry out cooling, reach the object of fast shaping.Die-casting blank through hot orthopedic after, internal stress is little, resilience can not occur.In orthopedic parameter, eliminate the factor of " people ", can realize control and the adjustment of orthopedic parameter, guaranteed the uniformity of orthopedic effect.Can alleviate workman's labour intensity, enhance productivity simultaneously.
Accompanying drawing explanation
Fig. 1 is the structural representation of the hot device of straightening of die-casting blank of immersion type of the present invention;
Fig. 2 is the structural representation that Elastic of the present invention compresses pressure head;
Fig. 3 is the structural representation of water tank cooling water temperature automatic control system in the present invention.
The specific embodiment
Below in conjunction with specific embodiment, the present invention is further illustrated.
Referring to Fig. 1～3: a kind of hot orthopedic appliance of die-casting blank of immersion type, comprise frame 1, frame 1 is provided with by the orthopedic brace of upper clamp assembly and lower clamp module composition and is arranged on the water tank 3 of orthopedic brace below; Lower clamp assembly hangs and is fixed on frame 1, and upper clamp assembly is liftably arranged on lower clamp assembly top; Water tank 3 open tops and be liftable structure.Orthopedic brace clamps foundry goods 10 and provides optical force for foundry goods 10; When water tank 3 rises, orthopedic brace is immersed in below water tank 3 liquid levels, thereby makes to be clamped in the quick cooling and shaping of foundry goods 10 in orthopedic brace.
Lower clamp assembly comprises base plate 4, be arranged on the clamp base 5 at base plate 4 tops and be arranged on the support column 11 of several height-adjustable in clamp base 5, and base plate 4 is connected with frame 1 top suspension by connecting rod 12.The effect of lower clamp assembly is fixedly to treat orthopedic foundry goods 10, and locate mode can adopt profile location or location, hole according to the structure of different foundry goods.Support column 11 is to need orthopedic plane to arrange according to foundry goods 10, its role is to support foundry goods 10 relevant positions, bottom surface, and default bearing height, flatness when foundry goods 10 each positions of large plane surpasses in claimed range, support column 11 height that only need to adjust corresponding site, meet the requirements its flatness.Support column 11 lower ends can be connected with clamp base 5 by screw thread, the convenient height of adjusting.
Upper clamp assembly comprises top board 6 and several compression pressure heads 9 that are arranged on top board 6 bottoms, compresses pressure head 9 corresponding one by one with support column 11, and every a pair of compression pressure head 9 and support column 11 are on same vertical line; Frame 1 top is provided with cylinder 7, and the push rod of cylinder 7 is connected with top board 6, between top board 6 and frame 1, is also provided with guide frame 8.Cylinder 7 presses down, and upper clamp assembly can produce optical force to the foundry goods 10 being fixed on support column 11.
Referring to Fig. 2, in order to guarantee that each compresses pressure head 9 and can the relevant position of foundry goods 10 be compressed and be conformed on support column 11 simultaneously, compress pressure head 9 and be designed to elastic compression pressure head, comprise guide pin bushing 16, the pressure head 14 being connected with top board 6 and be arranged on pressure head 14 and guide pin bushing 16 between spring 15, guide pin bushing 16 presses down in process has spring 15 to cushion, and guide pin bushing 16 is delivered to pressure head 14 by pressure by spring 15, the bottom surface that drive ram 14 compresses product 10 conforms on each support column 11.
After single-piece is orthopedic, due to casting thickness skewness, heat that the cooling water of diverse location absorbs is different and cause the interior cooling water temperature of water tank 3 field inhomogeneous, affects orthopedic effect.Water tank 3 is provided with cooling water temperature automatic control system.Referring to Fig. 3, cooling water temperature automatic control system comprises temperature sensor 31, source of the gas 32, for supplying with the cooling water inlet 33 of cooling water, for discharging coolant outlet 34 and the controller (not indicating) of cooling water; Temperature sensor 31 is a plurality of, is arranged on the interior diverse location of water tank 3; Source of the gas 32 is communicated with water tank 3 bottoms by tracheae 35, is provided with several bronchuses 36 between water tank 3 and tracheae 35, between water tank 3 and source of the gas 32, is provided with magnetic valve 1; Cooling water inlet 33 is separately positioned on water tank 3 both sides with coolant outlet 34, and cooling water inlet 33 height are lower than coolant outlet 34 height, and cooling water inlet 33 is respectively arranged with magnetic valve 2 38 and magnetic valve 3 39 with coolant outlet 34; Temperature sensor 31, magnetic valve 1, magnetic valve 2 38 and magnetic valve 3 39 are all connected with controller.When the temperature gap recording when temperature sensor 31 exceeds setting value, magnetic valve 1 is opened, and source of the gas 32 passes into compressed air to water tank 3, from water tank 3 bottom blowing bubblings, makes cooling water temperature even.After continuously orthopedic, due to the transmission of heat, cause water temperature in water tank 3 to raise, cause that foundry goods cooldown rate there are differences, the effect that remote-effects are orthopedic.When the water temperature of cooling water higher than set temperature upper limit time, magnetic valve 2 38 is opened with magnetic valve 3 39, cooling water 33 flows to water tank 3 from cooling water inlet, unnecessary cooling water flows out from coolant outlet 34, guarantees that water tank 3 liquid levels are constant.Meanwhile, magnetic valve 1 is opened, and source of the gas 32 passes into compressed air to water tank 3, from water tank 3 bottom blowing bubblings, makes cooling water temperature even.So iterative cycles, maintains coolant water temperature within rational scope.
Between coolant outlet 34 and cooling water inlet 33, be communicated with and be linked to be a loop, on this loop, be provided with cooling device 40.The water that coolant outlet 34 can be flowed out is supplied in water tank 3 by cooling water inlet 34 after apparatus for supercooling 40 coolings are processed, and recycles water resource.
The present invention utilize that aluminum alloy die casting is low in hot lower intensity, toughness is high characteristic, when optical force applies, adopt the mode of cold water soak to carry out cooling, reach the object of fast shaping.Die-casting blank through hot orthopedic after, internal stress is little, resilience can not occur.In orthopedic parameter, eliminate the factor of " people ", can realize control and the adjustment of orthopedic parameter, guaranteed the uniformity of orthopedic effect.Can alleviate workman's labour intensity, enhance productivity simultaneously.
The hot straightening method of die-casting blank of immersion type, adopts device described in embodiment 1, comprises the following steps:
(1) by temperature, be that the foundry goods of 200 ℃～300 ℃ is put into orthopedic brace and carried out orthopedic;
(2) orthopedic brace is dipped into quick cooling and shaping in cooling water together with foundry goods.
The temperature that general foundry goods has just processed can meet orthopedic requirement, without extra heating.
When orthopedic, the dwell time is 15s, and dwell pressure is 5Mpa.
The temperature of described cooling water is no more than 45 ℃.General cooling water temperature is selected 25～45 ℃, without extra consumed energy, lowers the temperature, and also can not affect orthopedic effect.
The hot straightening method of immersion type according to the present invention and relevant apparatus, the front cover shell that is ADC12 to the aluminium material trade mark of producing on 9000KN horizontal type cold-chamber die casting has carried out orthopedic.Before orthopedic beginning, detect relevant orthopedic parameter, wherein coolant water temperature is 25 ℃, dwell time 15s, dwell pressure 5Mpa.Under above process conditions, to front cover shell part, carry out orthopedic.After continuous orthopedic 10, the flatness of die-casting blank is less than 0.5mm, has reached design object value, and the fluctuation of the flatness between blank is less, and flatness is more stable.Now water temperature rises to 30 ℃, through continuous production, finds that water temperature surpasses 50 ℃ below, is not changing under the condition of other parameters, and fluctuation has appearred in the flatness of die-casting blank, so according to actual effect, be limited to 45 ℃ on setting coolant water temperature.An operation cycle of measuring in continuous orthopedic process is 35s, the 98s that the artificial section straightening manual detection flatness comparing in the past needs, and production efficiency has improved nearly 2 times.
Only as described above, only for the present invention's preferred embodiment, when not limiting with this scope of the present invention, the content of generally recording according to the claims in the present invention and description has been done simple equivalence and has been changed and modify, and is all still covered by the claims of the invention.In addition, summary part and title are only the use for auxiliary patent document search, are not used for limiting the present invention's interest field.
Claims (10)
1. the hot straightening method of the die-casting blank of immersion type, is characterized in that, comprises the following steps:
(1) by temperature, be that the foundry goods of 200 ℃～300 ℃ is put into orthopedic brace and carried out orthopedic;
(2) orthopedic brace is dipped into quick cooling and shaping in cooling water together with foundry goods.
2. the hot straightening method of the die-casting blank of a kind of immersion type according to claim 1, is characterized in that, when orthopedic, the dwell time is 15s, and dwell pressure is 5Mpa.
3. the hot straightening method of the die-casting blank of a kind of immersion type according to claim 1 and 2, is characterized in that, the temperature of described cooling water is no more than 45 ℃.
4. the hot orthopedic appliance of the die-casting blank of immersion type, comprises frame, it is characterized in that, described frame is provided with the orthopedic brace and the water tank that is arranged on orthopedic brace below by upper clamp assembly and lower clamp module composition; Described lower clamp assembly hangs and is fixed on frame, and described upper clamp assembly is liftably arranged on lower clamp assembly top; Described tank top is uncovered and be liftable structure.
5. the hot orthopedic appliance of the die-casting blank of a kind of immersion type according to claim 4, it is characterized in that, described lower clamp assembly comprises base plate, be arranged on the clamp base at base plate top and be arranged on the support column of several height-adjustable in clamp base, and described base plate is hung and is connected with frame top by connecting rod.
6. the hot orthopedic appliance of the die-casting blank of a kind of immersion type according to claim 5, it is characterized in that, described upper clamp assembly comprises top board and is arranged on several compression pressure heads of top board bottom, described compression pressure head is corresponding one by one with support column, and every a pair of compression pressure head and support column are on same vertical line; Described frame top is provided with cylinder, and cylinder push-rod is connected with top board, is also provided with guide frame between top board and frame.
7. the hot orthopedic appliance of the die-casting blank of a kind of immersion type according to claim 6, is characterized in that, described compression pressure head is elastic compression pressure head, comprise guide pin bushing, the pressure head being connected with top board and be arranged on pressure head and guide pin bushing between spring.
8. according to the hot orthopedic appliance of the die-casting blank of a kind of immersion type described in claim 4 or 6, it is characterized in that, described water tank is connected with frame bottom by cylinder, between described water tank and frame bottom, is also provided with guiding mechanism.
9. the hot orthopedic appliance of the die-casting blank of a kind of immersion type according to claim 4, it is characterized in that, described water tank is provided with cooling water temperature automatic control system, and this system comprises temperature sensor, source of the gas, for supplying with the cooling water inlet of cooling water, for discharging coolant outlet and the controller of cooling water; Described temperature sensor is a plurality of, is arranged on diverse location in water tank; Described source of the gas is communicated with water tank bottom by tracheae, is provided with several bronchuses between water tank and tracheae, is provided with magnetic valve one between water tank and source of the gas; Described cooling water inlet and coolant outlet are separately positioned on water tank both sides, and cooling water inlet height is lower than coolant outlet height, and cooling water inlet and coolant outlet are respectively arranged with magnetic valve two and magnetic valve three; Described temperature sensor, magnetic valve one, magnetic valve two and magnetic valve three are all connected with controller.
10. the hot orthopedic appliance of the die-casting blank of a kind of immersion type according to claim 9, is characterized in that, between described coolant outlet and cooling water inlet, is communicated with and is linked to be a loop, on this loop, is provided with cooling device.
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| CN201410020164.0A CN103753101B (en) | 2014-01-16 | 2014-01-16 | The hot straightening method of die-casting blank of a kind of immersion type and device |
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| CN108620565A (en) * | 2018-07-06 | 2018-10-09 | 湖州吉弘机械有限公司 | A kind of cooling device for the mating casting of fork truck |
| CN110918685A (en) * | 2019-11-20 | 2020-03-27 | 嘉丰工业科技（惠州）有限公司 | Die pressing shape-righting method for magnesium alloy ultrathin notebook computer shell die casting |
| CN115229507A (en) * | 2022-06-27 | 2022-10-25 | 浙江万鼎精密科技股份有限公司 | High-load low-loss driven wheel machining equipment and machining method thereof |
| CN116638061A (en) * | 2023-06-14 | 2023-08-25 | 广州市型腔模具制造有限公司 | Die casting size deformation control method for new energy automobile |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106040786A (en) * | 2015-04-14 | 2016-10-26 | 丰田自动车株式会社 | Method for processing metal-cast article |
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| CN110918685A (en) * | 2019-11-20 | 2020-03-27 | 嘉丰工业科技（惠州）有限公司 | Die pressing shape-righting method for magnesium alloy ultrathin notebook computer shell die casting |
| CN115229507A (en) * | 2022-06-27 | 2022-10-25 | 浙江万鼎精密科技股份有限公司 | High-load low-loss driven wheel machining equipment and machining method thereof |
| CN115229507B (en) * | 2022-06-27 | 2024-08-02 | 浙江万鼎精密科技股份有限公司 | High-load low-loss driven wheel machining equipment and machining method thereof |
| CN116638061A (en) * | 2023-06-14 | 2023-08-25 | 广州市型腔模具制造有限公司 | Die casting size deformation control method for new energy automobile |
| CN116638061B (en) * | 2023-06-14 | 2023-11-21 | 广州市型腔模具制造有限公司 | Die casting size deformation control method for new energy automobile |
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| CN103753101B (en) | 2016-08-24 |
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