CN104400360A - Optimized I beam profile processing method - Google Patents
Optimized I beam profile processing method Download PDFInfo
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- CN104400360A CN104400360A CN201410762603.5A CN201410762603A CN104400360A CN 104400360 A CN104400360 A CN 104400360A CN 201410762603 A CN201410762603 A CN 201410762603A CN 104400360 A CN104400360 A CN 104400360A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/02—Making uncoated products
- B21C23/04—Making uncoated products by direct extrusion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C25/00—Profiling tools for metal extruding
- B21C25/02—Dies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
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Abstract
The invention provides an optimized I beam profile processing method. The optimized I beam profile processing method includes: pouring aluminum alloy into a mold, casting an ingot, and obtaining an I beam profile after heating, extruding, stretching and roller flattening, wherein keeping extrusion temperature at 420-460 degree centigrade, keeping extrusion speed at 0.25-0.6m/min, and keeping mold temperature at 470-490 degree centigrade. The optimized I beam profile processing method is obtained by improving an I beam profile processing method through the specific extrusion temperature, the specific extrusion speed and the specific mold temperature, and therefore a jamming phenomenon can not occur during the processing process of the I beam profile obtained through the optimized I beam profile processing method, and rate of finished products is high.
Description
Technical field
The present invention relates to alloy technology field, especially relate to a kind of I-shape beam shape material processing method.
Background technology
The main alloy element of 5 line aluminium alloys is magnesium, and aluminum-magnesium series alloy favorable rust preventing effect, belongs to not heat-treatable strengthened aluminum alloy.This is that alloy density is little, belongs to middle high-strength aluminum alloy, and well, resistance to sea atmosphere corrosion is good for fatigue behaviour and welding performance.In 5 line aluminium alloys, 5083 is the exemplary alloy in aluminum-magnesium series rustproof aluminum alloy.It has excellent welding and good etch resistant properties.Its tensile strength is only second to 5056 in aluminum-magnesium series alloy, its strength of welded joint can be equal with the fundamental strength of annealed condition, and it is reliably anti-corrosion, along with the reduction of temperature, tensile strength, the percentage elongation of base metal and plumb joint increase, low-temperature flexibility is also very good, and therefore 5083 become welding construction material the most basic in aluminium alloy.Be widely used in the field that the high corrosion stability of needs, good solderability and moderate strength are harmonious, as naval vessels, automobile and aircraft plate weldment, the pressure vessel needing rigorous fire, refrigerating plant, television tower, drilling equipment, facilities for transport and communication etc.
This is that the intensity of alloy improves along with the increase of Mg content, plasticity decreases, its process industrial art performance also can be deteriorated thereupon, especially for extrusion process, when there will be extruding, alloy deformation drag is greatly and very easily " peeling " and occur " vexed car " phenomenon, the percent thermal shrinkage of alloy is larger, shaping poor, to there will be the defects such as angle becomes large, plane clearance overproof, irregular appearance " wave " when great cantilever and little wall thickness profile extrusion.And these defects seriously hamper the normal operation of production.
Summary of the invention
In view of this, the invention provides a kind of I-shape beam shape material processing method, I-shape beam shape material processing method provided by the invention can improve the vexed car phenomenon in section bar process.
The invention provides a kind of I-shape beam shape material processing method, comprising:
Aluminium alloy ingot casting heating in a mold, extruding, stretching, roller are rectified and obtained I-beam;
Described extrusion temperature is 420 ~ 460 DEG C; Described extrusion speed is 0.25 ~ 0.6m/min;
Described mold temperature is 470 ~ 490 DEG C.
Preferably, described extrusion temperature is 430 ~ 450 DEG C.
Preferably, described extrusion speed is specially: initial velocity 0.3 ~ 0.4m/min, 1 ~ 2h speed rises to 0.4 ~ 0.6m/min.
Preferably, described mold temperature is 475 ~ 485 DEG C.
Preferably, in described mould, flow-guilding mold (3) is provided with secondary diversion cavity (5), described secondary diversion cavity (5) is arranged on two ends, major flow chamber, and be communicated with described major flow chamber, described major flow chamber is all communicated with nib (4) with described secondary diversion cavity (5).Preferably, described in be stretched as and use cushion block assisting tension, described cushion block is placed on I-beam web.
Preferably, described cushion block material is hard aluminium alloy.
Preferably, described cushion block height is lower than I-beam broadside height 5 ~ 10mm.
Preferably, described extensibility≤3%.
Preferably, described roller is rectified and is rectified for using plastic cement nylon roller to carry out roller.
Compared with prior art, the invention provides a kind of I-shape beam shape material processing method, comprising: aluminium alloy ingot casting heating in a mold, extruding, stretching, roller are rectified and obtained I-beam; Described extrusion temperature is 420 ~ 460 DEG C; Described extrusion speed is 0.25 ~ 0.6m/min; Described mold temperature is 470 ~ 490 DEG C.The present invention is improved I-shape beam shape material processing method by specific extrusion temperature, extrusion speed and specific mold temperature, thus makes can not produce vexed car phenomenon in the I-beam process adopting method of the present invention to process, and yield rate is high.
Accompanying drawing explanation
The structural representation of the extrusion die that Fig. 1 uses for the embodiment of the present invention;
The structural representation of the import step band that Fig. 2 uses for the embodiment of the present invention;
The installation site figure of the obstruction boss that Fig. 3 uses for the embodiment of the present invention;
Wherein in Fig. 1-3: the secondary diversion cavity of 1-die ontology, 2-import step band, 3-flow-guilding mold, 4-nib, 5-, 6-hinder boss
Fig. 4 is I-beam of the present invention and cushion block relative position schematic diagram.
Detailed description of the invention
The invention provides a kind of I-shape beam shape material processing method, comprising:
Aluminium alloy ingot casting heating in a mold, extruding, stretching, roller are rectified and obtained I-beam;
Described extrusion temperature is 420 ~ 460 DEG C; Described extrusion speed is 0.25 ~ 0.6m/min;
Described mold temperature is 470 ~ 490 DEG C.
In the present invention, described aluminium alloy can be 5 line aluminium alloys, includes but not limited to 5083 aluminium alloys.
The invention provides a kind of I-shape beam shape material processing method, first to aluminium alloy ingot casting heating in a mold.In the present invention, described ingot casting heating is not limited, ingot casting heating means well known to those skilled in the art and parameter.
Extrusion die of the present invention comprises die ontology and is arranged on the flow-guilding mold on described die ontology, described flow-guilding mold is provided with major flow chamber, described die ontology is provided with nib, described flow-guilding mold is also provided with secondary diversion cavity, described secondary diversion cavity is arranged on two ends, described major flow chamber, and be communicated with described major flow chamber, described major flow chamber is all communicated with described nib with described secondary diversion cavity.
Preferably, also comprise the import step band being arranged on described nib import department, described import step band is provided with and hinders angle.Preferably, described obstruction angle α is: 3 °≤α≤10 °.
Preferably, also comprise the import step band being arranged on described nib import department, described import step band is provided with obstruction boss.
Preferably, the repair welding work strip being welded in described orifice exit is also comprised.
Preferably, the width of described secondary diversion cavity is 10mm.
Concrete, please refer to Fig. 1 to Fig. 3, extrusion die of the present invention comprises die ontology 1, the flow-guilding mold 3 be arranged on die ontology 1, flow-guilding mold 3 is provided with major flow chamber and is arranged on two ends, major flow chamber, and the secondary diversion cavity 5 be communicated with major flow chamber, the size of secondary diversion cavity 5 is determined according to actual conditions.Die ontology 1 is provided with nib 4, and major flow chamber is all communicated with nib 4 with secondary diversion cavity 5.5083 aluminium alloy I-beams are in extruded process, and metallic solution enters nib 4 by major flow chamber and secondary diversion cavity 5, then enter die ontology 1 inner, export discharge finally by nib 4.
Known by foregoing description, in the extrusion die of the 5083 aluminium alloy I-beams provided in the specific embodiment of the invention, the circulation area of diversion cavity on flow-guilding mold 3 is increased by arranging secondary diversion cavity 5, and secondary diversion cavity 5 is positioned at two ends, major flow chamber, two ends, major flow chamber are flange plate shaping position import, and then increase the metal supply of the shaping position of flange plate, cladding plate position metal flow is reduced, and then reduce the situation of the larger formation ripple of cladding plate place metallic solution flow velocity, therefore, the extrusion die that the application provides can improve the Forming Quality of 5083 aluminium alloy I-beams.
Preferably, as shown in Figure 2, this extrusion die import step band 2, import step band 2 is arranged on nib 4 import department, and import step band 2 is provided with and hinders angle.Concrete, hinder angle to be less than 12 °, in order to improve the obstruction liquid flow effect hindering angle, preferably, obstruction angle α is: 3 °≤α≤10 °.
Preferably, as shown in Figure 3, import step band 2 is provided with and hinders boss 6.Concrete, hinder boss 6 can be integral type structure with import step band 2, also can be formed by repair welding.Hinder angle by arranging or hinder boss 6, reducing the speed that metal enters die ontology 1, and then reduce cladding plate shaping place flow rate of metal, further increase the Forming Quality of 5083 aluminium alloy I-beams.
Further, this extrusion die also comprises repair welding work strip, and repair welding work strip is welded in nib 4 and exports.By arranging repair welding work strip, increasing the length of cladding plate position work strip, to strengthen the resistance of this part metals flowing, reducing the metal flow rates of cladding plate position, and then improving the Forming Quality of 5083 aluminium alloy I-beams.
On the basis of above-mentioned each scheme, preferably, the width of secondary diversion cavity 5 is 10mm, and namely the diversion cavity of flow-guilding mold 3 extends out 10mm on traditional infrastructure.
Web place flow rate of metal can be made fast by particular mold of the present invention, metal is in large supply, expand diversion cavity size simultaneously, metal supply can be strengthened, make this place's metal supply reach balance, thus the I-beam that I-shape beam shape material processing method of the present invention is processed does not produce web not easily produces wave phenomenon.
Extrusion process is carried out after ingot casting.The present invention does not limit for described pressurizing unit, pressurizing unit well known to those skilled in the art.
In the present invention, described mold temperature is preferably 470 ~ 490 DEG C, is more preferably 475 ~ 485 DEG C, most preferably is 477 ~ 483 DEG C, is the most preferably 480 DEG C.In the present invention, described extrusion temperature is preferably 430 ~ 450 DEG C, is more preferably 433 ~ 458 DEG C, most preferably is 435 ~ 455 DEG C, is the most preferably 437 ~ 452 DEG C.
In the present invention, described extruding is speed change extruding, and described extrusion speed is preferably specially: initial velocity 0.3 ~ 0.4m/min, and after 1 ~ 2h, speed rises to 0.4 ~ 0.6m/min, be more preferably initial velocity 0.32 ~ 0.38m/min, after 1.1 ~ 1.9h, speed rises to 0.42 ~ 0.58m/min.
The present invention is improved I-shape beam shape material processing method by specific extrusion temperature, extrusion speed and specific mold temperature, thus makes can not produce vexed car phenomenon in the I-beam process adopting method of the present invention to process,
The present invention does not limit for described stretching device and technique, can carry out in stretching-machine well known to those skilled in the art.
Stretching of the present invention is preferably and uses cushion block assisting tension, and as shown in Figure 4, Fig. 4 is I-beam of the present invention and cushion block relative position schematic diagram.Described cushion block is placed on I-beam web.Described cushion block material includes but not limited to as hard aluminium alloy.Described cushion block height is preferably lower than I-beam broadside height 5 ~ 10mm, is more preferably 6 ~ 9mm.Described extensibility is preferably less than or equal to 3%, is more preferably and is less than or equal to 2.5%.
The present invention uses specific materials to obtain cushion block assisting tension to described stretching, and sets highly specific, can help to eliminate Article Tensile twisted phenomena, better shaping.And control specific extensibility and can prevent distortion.
After stretching, roller is rectified and is obtained I-beam.The present invention does not limit for described roller device of straightening and technique, can carry out in roller device of straightening well known to those skilled in the art.
Roller of the present invention strong preferably use plastic cement nylon roller is carried out roller and is rectified.The present invention adopt above-mentioned nylon roller carry out roller rectify product surface can be protected injury-free.
The invention provides a kind of I-shape beam shape material processing method, comprising: aluminium alloy ingot casting heating in a mold, extruding, stretching, roller are rectified and obtained I-beam; Described extrusion temperature is 420 ~ 460 DEG C; Described extrusion speed is 0.25 ~ 0.6m/min; Described mold temperature is 470 ~ 490 DEG C.The present invention is improved I-shape beam shape material processing method by specific extrusion temperature, extrusion speed and specific mold temperature, thus makes can not produce vexed car phenomenon in the I-beam process adopting method of the present invention to process, and yield rate is high.
The present invention by repairing mould, extrusion temperature, extrusion speed, mold temperature, the cushion block of stretching pad specific materials and height and roller rectify and make to adopt that the I-beam of processes of the present invention can not produce vexed car phenomenon, web not easily produces wave and bending, size are accurate.
In order to further illustrate the present invention, below in conjunction with embodiment, I-shape beam shape material processing method provided by the invention is described in detail.
Embodiment 1
To the ingot casting heating in casting machine of 5 line aluminium alloys, mould mould of the present invention, heating-up temperature is 470 DEG C, extrudes after ingot casting in extruder at the temperature of 420 DEG C, extruding is regulated the speed and is specially: initial velocity 0.3m/min, after 1h, speed rises to 0.4m/min, then in seven-roll Abramsen machine, and pad hard aluminium alloy cushion block, cushion block is lower than I-beam broadside height 6mm, restrained stretching rate 3%, then carries out roller by plastic cement nylon roller and rectifys, obtain 5083 I-beam.Do not occur vexed car phenomenon in processing, finished product is good, does not have wave and buckling phenomenon.
Embodiment 2
To the ingot casting heating in casting machine of 5 line aluminium alloys, heating-up temperature is 480 DEG C, extrude at the temperature of 430 DEG C in extruder after ingot casting, extruding is regulated the speed and is specially: initial velocity 0.4m/min, and after 1h, speed rises to 0.5m/min, then in seven-roll Abramsen machine, pad hard aluminium alloy cushion block, cushion block lower than I-beam broadside height 9mm, restrained stretching rate 2%, then carry out roller by plastic cement nylon roller to rectify, obtain 5083 I-beam.Do not occur vexed car phenomenon in processing, finished product is good, does not have wave and buckling phenomenon.
Embodiment 3
To the ingot casting heating in casting machine of 5 line aluminium alloys, heating-up temperature is 490 DEG C, extrude at the temperature of 450 DEG C in extruder after ingot casting, extruding is regulated the speed and is specially: initial velocity 0.4m/min, and after 1h, speed rises to 0.6m/min, then in seven-roll Abramsen machine, pad hard aluminium alloy cushion block, cushion block lower than I-beam broadside height 8mm, restrained stretching rate 2%, then carry out roller by plastic cement nylon roller to rectify, obtain 5083 I-beam.Do not occur vexed car phenomenon in processing, finished product is good, does not have wave and buckling phenomenon.
Embodiment 4
Adopt the scheme industrially prolonged application described in the embodiment of the present invention 2, do not occur vexed car phenomenon in processing, finished product is good, does not have wave and buckling phenomenon, and yield rate is more than 99%.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. an I-shape beam shape material processing method, comprising:
Aluminium alloy ingot casting heating in a mold, extruding, stretching, roller are rectified and obtained I-beam;
Described extrusion temperature is 420 ~ 460 DEG C; Described extrusion speed is 0.25 ~ 0.6m/min;
Described mold temperature is 470 ~ 490 DEG C.
2. I-shape beam shape material processing method according to claim 1, is characterized in that, described extrusion temperature is 430 ~ 450 DEG C.
3. I-shape beam shape material processing method according to claim 1, is characterized in that, described extrusion speed is specially: initial velocity 0.3 ~ 0.4m/min, 1 ~ 2h speed rises to 0.4 ~ 0.6m/min.
4. I-shape beam shape material processing method according to claim 1, is characterized in that, described mold temperature is 475 ~ 485 DEG C.
5. I-shape beam shape material processing method according to claim 1, it is characterized in that, in described mould, flow-guilding mold (3) is provided with secondary diversion cavity (5), described secondary diversion cavity (5) is arranged on two ends, major flow chamber, and be communicated with described major flow chamber, described major flow chamber is all communicated with nib (4) with described secondary diversion cavity (5).
6. I-shape beam shape material processing method according to claim 1, is characterized in that, described in be stretched as and use cushion block assisting tension, described cushion block is placed on I-beam web.
7. I-shape beam shape material processing method according to claim 1, is characterized in that, described cushion block material is hard aluminium alloy.
8. I-shape beam shape material processing method according to claim 1, is characterized in that, described cushion block height is lower than I-beam broadside height 5 ~ 10mm.
9. I-shape beam shape material processing method according to claim 1, is characterized in that, described extensibility≤3%.
10. I-shape beam shape material processing method according to claim 1, is characterized in that, described roller is rectified and rectified for using plastic cement nylon roller to carry out roller.
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| CN201410762603.5A CN104400360A (en) | 2014-12-12 | 2014-12-12 | Optimized I beam profile processing method |
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Cited By (2)
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| CN104759762A (en) * | 2015-03-31 | 2015-07-08 | 苏州汇能激光科技有限公司 | Extruding aluminum cross beam for laser cutting machine and production process |
| CN109332414A (en) * | 2018-09-29 | 2019-02-15 | 山东大学 | A kind of butterfly extrusion die for flat wide thin-walled multi-cavity aluminum profile production |
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