CN104226714B - The accurate temperature controlling method of pre-extrusion aluminium bar and realize its gradient cooling equipment - Google Patents
The accurate temperature controlling method of pre-extrusion aluminium bar and realize its gradient cooling equipment Download PDFInfo
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- CN104226714B CN104226714B CN201410449809.2A CN201410449809A CN104226714B CN 104226714 B CN104226714 B CN 104226714B CN 201410449809 A CN201410449809 A CN 201410449809A CN 104226714 B CN104226714 B CN 104226714B
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Abstract
The invention discloses a kind of accurate temperature controlling method of pre-extrusion aluminium bar, aluminium bar material entirety is warming up to the upper limit higher than Aluminum extrusion preheating temperature, then to the heat absorption of aluminium bar material local so that it is the gradient temperature difference occurs vertically.And the gradient cooling equipment that the accurate temperature controlling method of above-mentioned pre-extrusion aluminium bar is applied, including temperature measuring mechanism, gradient cooling body, aluminium bar material conveyer structure.The accurate temperature controlling method of a kind of brand-new pre-extrusion aluminium bar disclosed by the invention, it uses the most overall intensification, the rear method controlling cooling, it is possible to achieve the gradient temperature difference between pre-extrusion aluminium bar two ends reaches more than 200 DEG C, and can reduce the gradient temperature difference radially.Also disclose the gradient cooling equipment of pre-extrusion aluminium bar for above-mentioned accurate temperature controlling method.The present invention can be used for processing pre-extrusion aluminium bar.
Description
Technical field
The present invention relates to extrude workpiece heat field, a kind of accurate temperature controlling method of pre-extrusion aluminium bar, and realize the gradient cooling equipment of the method.
Background technology
Aluminium is sent into extruder extruding and is obtained after being preheated by aluminium bar material, owing to aluminium bar material rubs in extrusion process, compresses, bar can be persistently overheating, and the aluminium section bar quality of Isothermal Extrusion molding is produced impact.So aluminium bar material is before entering extruder, it should first pass through gradient preheating and process so that it is in one end high temperature, the gradient temperature difference state of one end relative low temperature, this aluminium bar material heated up through gradient, referred to as pre-extrusion aluminium bar.The temperature control technique of traditional pre-extrusion aluminium bar, is realized by gradient-heated stove.It is provided with multiple burner in the burner hearth of gradient-heated stove along the line, by controlling the on off state of the most each section of burner, reaches the purpose of aluminium bar material gradient increased temperature.But, this temperature control technique depends on temperature control precision time flame is heated, and putting into practice Flame and heating is more difficult control temperature, degree of accuracy is the highest, the head and the tail section thermograde that difficulty reaches bigger is poor, the generally head and the tail temperature difference at most can only achieve 50 DEG C, and is more than more than one meter in the length of aluminium bar material, cannot meet the demand of existing extruder.
Furthermore, aluminium bar material is directly heated up by flame while reaching the gradient temperature difference axially occur, and its surface also can there are the gradient temperature difference radially with internal, and the gradient temperature difference of this radial direction is directly proportional to the diameter of aluminium bar material.The gradient temperature difference radially can make pre-extrusion aluminium bar Density inhomogeneity occur when extruding, affects extruded, it should eliminated as far as possible.
Summary of the invention
The technical problem to be solved in the present invention is: provide a kind of accurate temperature controlling method of pre-extrusion aluminium bar.
Additionally provide the gradient cooling equipment realizing said method.
The technical scheme that the present invention solves technical problem is as follows:
The accurate temperature controlling method of pre-extrusion aluminium bar, is warming up to the upper limit higher than Aluminum extrusion preheating temperature, then to the heat absorption of aluminium bar material local so that it is occur the gradient temperature difference vertically by aluminium bar material entirety.
Specifically, said method comprises the following steps:
A.
Aluminium bar material the most successively equidistant partition is become N section region, is T for each regional aim temperature realized corresponding to the pre-extrusion aluminium bar gradient temperature difference(1,2,3 ..., N), wherein T1Temperature is the highest, TNTemperature is minimum；
B.
Aluminium bar material feeding heating furnace is heated so that it is bulk temperature relatively T1Exceed 50 DEG C, then send isothermal heating stove；
C.
Aluminium bar material temperature degree T after detection heating, calculates each region and from T, temperature is dropped to T(1,2,3 ..., N)Required coolant, and the cool time needed for every district is set according to amount of cooling water；
D.
Aluminium bar material after detection is sent into gradient cooling equipment, makes it lower the temperature each section of area spray coolant with N group nozzle；
E.
The aluminium bar material that segmentation is lowered the temperature is sent gradient cooling equipment, obtains pre-extrusion aluminium bar.
The gradient cooling equipment that the accurate temperature controlling method of above-mentioned pre-extrusion aluminium bar is applied includes:
Temperature measuring mechanism, for detecting the temperature of the zones of different of aluminium bar material；
Gradient cooling body, including casing, has cooling chamber, described casing to be provided with aluminium bar material and imports and exports in described casing, being provided with many groups in described casing can be to the nozzle of aluminium bar material injection coolant, and described nozzle is connected by pipeline with the liquid coolant sources of peripheral hardware；
Aluminium bar material conveyer structure, for sending aluminium bar material into gradient cooling body.
Aluminium bar material conveyer structure of the present invention includes frame and aluminium bar material stand, described frame be provided with front push rod, rear push rod, drive before push rod move axially front hydraulic cylinder, drive after the rear hydraulic motor that moves axially of push rod, described aluminium bar material stand is positioned at casing front, the antetheca being positioned at casing imported and exported by described aluminium bar material, and described front push rod includes the front seal closure can imported and exported with sealed aluminum bar.
Aluminium bar material conveyer structure of the present invention also includes that guide rail, described frame are connected with slide.
The rear wall of casing of the present invention is provided with frame and imports and exports, and described rear push rod includes the rear seal closure can imported and exported with sealed frame.
Temperature measuring mechanism of the present invention includes temperature probe and probe rotating mechanism, and described temperature probe is positioned at above aluminium bar material stand and is coupled with aluminium bar material stand by probe rotating mechanism.
Thermometric platform of the present invention is provided with 9 temperature probes, and described casing is provided with 9 groups of nozzles.
The sidewall of casing of the present invention is additionally provided with observation window.
The bottom of casing of the present invention is provided with coolant outlet.
The accurate temperature controlling method of a kind of brand-new pre-extrusion aluminium bar disclosed by the invention, it uses the most overall intensification, the rear method controlling cooling, it is possible to achieve the gradient temperature difference between pre-extrusion aluminium bar two ends reaches more than 200 DEG C, and can reduce the gradient temperature difference radially.Also disclose the gradient cooling equipment of pre-extrusion aluminium bar for above-mentioned accurate temperature controlling method.The present invention can be used for processing pre-extrusion aluminium bar.
Accompanying drawing explanation
For the technical scheme being illustrated more clearly that in the embodiment of the present invention, in describing embodiment below, the required accompanying drawing used is briefly described.Obviously, described accompanying drawing is a part of embodiment of the present invention rather than whole embodiment, and those skilled in the art is not on the premise of paying creative work, it is also possible to obtain other designs and accompanying drawing according to these accompanying drawings.
Fig. 1 is the front view of gradient cooling body of the present invention；
Fig. 2 is the top view of gradient cooling body of the present invention；
Fig. 3 is the left view of gradient cooling body of the present invention.
Detailed description of the invention
Below with reference to embodiment and accompanying drawing, the technique effect of design, concrete structure and the generation of the present invention is clearly and completely described, to be completely understood by the purpose of the present invention, feature and effect.Obviously; described embodiment is a part of embodiment of the present invention rather than whole embodiment, based on embodiments of the invention; other embodiments that those skilled in the art is obtained on the premise of not paying creative work, belong to the scope of protection of the invention.It addition, all connection/annexations being previously mentioned in literary composition, the most singly refer to that component directly connects, and refer to couple auxiliary according to being embodied as situation by adding or reducing, form more excellent draw bail.Each technical characteristic in the invention, can be with combination of interactions on the premise of the most conflicting conflict.
A kind of accurate temperature controlling method of pre-extrusion aluminium bar, is warming up to the upper limit higher than Aluminum extrusion preheating temperature, then to the heat absorption of aluminium bar material local so that it is occur the gradient temperature difference vertically by aluminium bar material entirety.Although tradition burner flame is heated and is realized the method for the gradient temperature difference and can control flame temperature by regulation fuel and the flow of oxygen, but actually the heat that aluminium bar material transmits is also needed to consider factor in many ways by flame, so the temperature-controlled precision of pre-extrusion aluminium bar cannot be improved.And the scheme cooling down heat absorption can easily calculate heat absorption medium and take away aluminium bar how many heats, therefore, it is possible to accurately control the gradient temperature difference that pre-extrusion aluminium bar is axial, it is achieved pre-extrusion aluminium bar two ends thermograde difference reaches more than 200 DEG C.
Specifically, said method comprises the following steps:
A.
Aluminium bar material the most successively equidistant partition is become N section region, is T for each regional aim temperature realized corresponding to the pre-extrusion aluminium bar gradient temperature difference(1,2,3 ..., N), wherein T1Temperature is the highest, TNTemperature is minimum；
B.
Aluminium bar material feeding heating furnace is heated so that it is bulk temperature relatively T1Exceed 50 DEG C, then send isothermal heating stove；
C.
Aluminium bar material temperature degree T after detection heating, calculates each region and from T, temperature is dropped to T(1,2,3 ..., N)Required coolant, and the cool time needed for every district is set according to amount of cooling water；
D.
Aluminium bar material after detection is sent into gradient cooling equipment, makes it lower the temperature each section of area spray coolant with N group nozzle；
E.
The aluminium bar material that segmentation is lowered the temperature is sent gradient cooling equipment, obtains pre-extrusion aluminium bar.
The gradient cooling equipment that the accurate temperature controlling method of above-mentioned pre-extrusion aluminium bar is applied includes:
Temperature measuring mechanism, for detecting the temperature of the zones of different of aluminium bar material；
As shown in Figures 1 to 3, gradient cooling body, including casing 1, cooling chamber 11 is had in described casing 1, described casing 1 is provided with aluminium bar material and imports and exports, and being provided with many groups in described casing 1 can be to the nozzle 2 of aluminium bar material injection coolant, and described nozzle 2 is connected by pipeline with the liquid coolant sources of peripheral hardware；
Aluminium bar material conveyer structure, for sending aluminium bar material into gradient cooling body.
It is further used as preferred embodiment, described aluminium bar material conveyer structure includes frame 3 and aluminium bar material stand 4, described frame be provided with front push rod 31, rear push rod 32, drive before push rod 31 move axially front hydraulic cylinder, drive after the rear hydraulic motor that moves axially of push rod 32, described aluminium bar material stand 4 is positioned at casing 1 front, the antetheca being positioned at casing 1 imported and exported by described aluminium bar material, and described front push rod 31 includes the front seal closure can imported and exported with sealed aluminum bar.By front push rod 31, rear push rod 32, aluminium bar material is carried out the pressure clamping of top, front and back end, send in casing 1 the most together, aluminium bar material can be made to be exposed to as far as possible in the spray regime of nozzle 2, it is to avoid inhomogeneous cooling is even.
Being further used as preferred embodiment, described aluminium bar material conveyer structure also includes that guide rail 5, described frame 3 are slidably connected with guide rail 5.Current push rod 31, rear push rod 32 push up pressure and clamp after aluminium bar material with regard to latched position, frame 3 entirety slip in casing 1 along guide rail 5, it is to avoid aluminium bar material gets loose and drops.
Being further used as preferred embodiment, the rear wall of described casing 1 is provided with frame and imports and exports, and described rear push rod 32 includes the rear seal closure that can import and export 13 with sealed frame.
Being further used as preferred embodiment, described temperature measuring mechanism includes temperature probe 6 and probe rotating mechanism 7, and described temperature probe 6 is positioned at above aluminium bar material stand 4 and is coupled with aluminium bar material stand 4 by probe rotating mechanism 7.Aluminium bar material first detects temperature before entering gradient cooling body, calculating needs to spray how many coolants and could be dropped to target temperature.
Being further used as preferred embodiment, described thermometric platform is provided with 9 temperature probes 6, and described casing 1 is provided with 9 groups of nozzles 2.
Being further used as preferred embodiment, the sidewall of described casing 1 is additionally provided with observation window 12.
Being further used as preferred embodiment, the bottom of described casing 1 is provided with coolant outlet.
Above the better embodiment of the present invention is illustrated, but the invention is not limited to described embodiment, those of ordinary skill in the art also can make all equivalent modifications or replacement on the premise of spirit of the present invention, and modification or the replacement of these equivalents are all contained in the application claim limited range.
Claims (6)
1. the gradient cooling equipment of pre-extrusion aluminium bar, it is characterised in that including:
Temperature measuring mechanism, for detecting the temperature of the zones of different of aluminium bar material；
Gradient cooling body, including casing, has cooling chamber, described casing to be provided with aluminium bar material and imports and exports in described casing, being provided with many groups in described casing can be to the nozzle of aluminium bar material injection coolant, and described nozzle is connected by pipeline with the liquid coolant sources of peripheral hardware；
Aluminium bar material conveyer structure, for aluminium bar material is sent into gradient cooling body, described aluminium bar material conveyer structure includes frame and aluminium bar material stand, described frame is provided with front push rod, rear push rod, the front hydraulic cylinder that before driving, push rod moves axially, the hydraulic motor that after driving, push rod moves axially, described aluminium bar material stand is positioned at casing front, the antetheca being positioned at casing imported and exported by described aluminium bar material, described front push rod includes the front seal closure can imported and exported with sealed aluminum bar, the rear wall of described casing is provided with frame and imports and exports, described rear push rod includes the rear seal closure can imported and exported with sealed frame.
The gradient cooling equipment of pre-extrusion aluminium bar the most according to claim 1, it is characterised in that: described aluminium bar material conveyer structure also includes that guide rail, described frame are connected with slide.
The gradient cooling equipment of pre-extrusion aluminium bar the most according to claim 1, it is characterized in that: described temperature measuring mechanism includes temperature probe and probe rotating mechanism, described temperature probe is positioned at above aluminium bar material stand and is coupled with aluminium bar material stand by probe rotating mechanism.
The gradient cooling equipment of pre-extrusion aluminium bar the most according to claim 1, it is characterised in that: thermometric platform is provided with 9 temperature probes, and described casing is provided with 9 groups of nozzles.
5. according to the gradient cooling equipment of the arbitrary described pre-extrusion aluminium bar of Claims 1 to 4, it is characterised in that: the sidewall of described casing is additionally provided with observation window.
6. according to the gradient cooling equipment of the arbitrary described pre-extrusion aluminium bar of Claims 1 to 4, it is characterised in that: the bottom of described casing is provided with coolant outlet.
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Citations (6)
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| US4790167A (en) * | 1987-06-23 | 1988-12-13 | Granco-Clark, Inc. | Extrusion run-out table |
| US5027634A (en) * | 1990-02-28 | 1991-07-02 | Granco-Clark, Inc. | Solutionizing taper quench |
| CN101722206A (en) * | 2009-11-17 | 2010-06-09 | 北京科技大学 | Device and control system for realizing temperature gradient distribution of extrusion billet |
| CN101817030A (en) * | 2009-11-23 | 2010-09-01 | 中色科技股份有限公司 | Technical configuration method for major-diameter aluminum-alloy round cast ingot heating facility |
| CN102492877A (en) * | 2011-12-31 | 2012-06-13 | 辽宁忠旺集团有限公司 | Extruding processing technology of aluminium alloy tubing with large diameter |
| CN204182708U (en) * | 2014-09-04 | 2015-03-04 | 考迈托（佛山）挤压科技股份有限公司 | The gradient cooling equipment of pre-extrusion aluminium bar |
-
2014
- 2014-09-04 CN CN201410449809.2A patent/CN104226714B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4790167A (en) * | 1987-06-23 | 1988-12-13 | Granco-Clark, Inc. | Extrusion run-out table |
| US5027634A (en) * | 1990-02-28 | 1991-07-02 | Granco-Clark, Inc. | Solutionizing taper quench |
| CN101722206A (en) * | 2009-11-17 | 2010-06-09 | 北京科技大学 | Device and control system for realizing temperature gradient distribution of extrusion billet |
| CN101817030A (en) * | 2009-11-23 | 2010-09-01 | 中色科技股份有限公司 | Technical configuration method for major-diameter aluminum-alloy round cast ingot heating facility |
| CN102492877A (en) * | 2011-12-31 | 2012-06-13 | 辽宁忠旺集团有限公司 | Extruding processing technology of aluminium alloy tubing with large diameter |
| CN204182708U (en) * | 2014-09-04 | 2015-03-04 | 考迈托（佛山）挤压科技股份有限公司 | The gradient cooling equipment of pre-extrusion aluminium bar |
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