CN109280819A - A kind of big wide cut thin-walled skirtboard profile of track vehicle body and its extrusion process - Google Patents
A kind of big wide cut thin-walled skirtboard profile of track vehicle body and its extrusion process Download PDFInfo
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- CN109280819A CN109280819A CN201811204151.3A CN201811204151A CN109280819A CN 109280819 A CN109280819 A CN 109280819A CN 201811204151 A CN201811204151 A CN 201811204151A CN 109280819 A CN109280819 A CN 109280819A
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- Prior art keywords
- profile
- skirtboard
- walled
- vehicle body
- wide cut
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Classifications
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
-
- 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
- B21C23/06—Making sheets
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
- C22C21/08—Alloys based on aluminium with magnesium as the next major constituent with silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
- C22F1/05—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys of the Al-Si-Mg type, i.e. containing silicon and magnesium in approximately equal proportions
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Extrusion Of Metal (AREA)
- Forging (AREA)
Abstract
The invention belongs to aluminium alloy processing technology fields, it is related to a kind of big wide cut thin-walled skirtboard profile of track vehicle body and its extrusion process, by adjusting the ingredient of alloy on the basis of original technology, it joined micro rare earth element, and pass through the improvement of technology and mold, the profile that can only be produced respectively in the prior art is combined together, realizes the one-pass molding of profile, without welding；Pass through the adjustment of technology again, realize high-precision, the production of large-duty car body track skirtboard, provide effective molding scheme suitable for thin, wide profile, it solves and relies only on the technical issues of later period welding is just able to achieve this kind of shape extrusion in the prior art, provide good process data and advanced extrusion technique for later industrial production.
Description
Technical field
The invention belongs to aluminium alloy processing technology field, it is related to a kind of big wide cut thin-walled skirtboard profile of track vehicle body and its squeezes
Pressure technique.
Background technique
Existing track vehicle body skirtboard is processed using the technology that upper and lower skirtboard independently squeezes, this kind of technique
Maturation has been carried out batch production, but in the actual production process, be easy to cause contracting tail, and the coarse grain in product is also easy
Lead to the decline of yield rate；Upper and lower skirtboard carries out soldering after needing to squeeze production respectively, and the process of welding needs biggish precision,
Yield rate is lower, and the processing used time is longer.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of big wide cut thin-walled skirtboard profile of track vehicle body and its squeezing work
Skill realizes track vehicle body skirtboard by the production of high temperature low speed by the adjusting of adjustment and extrusion process to profile component
One-pass molding, and improve the surface quality, dimensional accuracy and physicochemical property of product.
In order to achieve the above objectives, the invention provides the following technical scheme:
A kind of big wide cut thin-walled skirtboard profile of track vehicle body, contains following each component by weight percentage, Si:0.60
~0.80%, Fe:0.15~0.30%, Cu:0.2~0.25%, Mn:0.20~0.35%, Mg:0.60~0.75%, Cr:
0.12~0.25%, Zn :≤0.15%, Ti :≤0.05%, V:0.046~0.09%, Er:0.05~0.10%, surplus are
Aluminium.
Optionally, the impurity of every kind of component is less than the 0.05 of the component weight, and total impurities are less than 0.15.
Optionally, the form of the profile is sheet material, plate, forging or extrusion.
A kind of extrusion process of the big wide cut thin-walled skirtboard profile of track vehicle body, comprising the following steps:
S1 is produced on extruder, sets mold temperature as T1, and extrusion cylinder temperature is T2, extrusion ratio λ, squeezes speed
Degree is v；
It is quenched after S2 extrusion forming, hardening heat both ends are T3, middle part T4；
Ageing treatment is carried out after S3 quenching, the processing time is t, treatment temperature T8；
S4 examines profile intensity, and test stone includes the group that one or more combinations of following standard are formed, surrender
Intensity, tensile strength, elongation percentage.
Optionally, in step sl, ingot casting using staged heat, the temperature from head to tail portion be followed successively by T5, T6,
T7。
Optionally, in step sl, 490 DEG C≤T1≤510 DEG C；440℃≤T2≤460℃；50≤λ≤90；1.5m/
min≤v≤2.5m/min。
Optionally, 520 DEG C≤T5≤530 DEG C, 510 DEG C≤T6≤520 DEG C, 490 DEG C≤T6≤500 DEG C.
Optionally, 380 DEG C≤T3≤420 DEG C, 340 DEG C≤T4≤380 DEG C.
Optionally, 7h≤t≤9h；170℃≤T8≤180℃.
Optionally, in step s 4, it is 290-320MPA, tensile strength 320- that test stone, which is yield strength,
340MPA, elongation percentage 15-18% include both ends extreme value in above-mentioned test stone.
The beneficial effects of the present invention are:
The present invention, by adjusting the ingredient of alloy, joined micro rare earth element on the basis of original technology, and pass through
The profile that can only be produced respectively in the prior art is combined together by the improvement of technology and mold, realizes the one of profile
Secondary molding, without welding；Again by the adjustment of technology, high-precision, the life of large-duty car body track skirtboard are realized
It produces, provides effective molding scheme suitable for thin, wide profile, solve and rely only on later period welding ability in the prior art in fact
Now the technical issues of this kind of shape extrusion, good process data and advanced extruding skill are provided for later industrial production
Art.
Other advantages, target and feature of the invention will be illustrated in the following description to a certain extent, and
And to a certain extent, based on will be apparent to those skilled in the art to investigating hereafter, Huo Zheke
To be instructed from the practice of the present invention.Target of the invention and other advantages can be realized by following specification and
It obtains.
Detailed description of the invention
To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention is made below in conjunction with attached drawing excellent
The detailed description of choosing, in which:
Fig. 1 is the section view of the big wide cut thin-walled skirtboard profile of track vehicle body in the present invention；
Fig. 2 is the schematic shapes of upper skirtboard in the prior art；
Fig. 3 is the schematic shapes for descending skirtboard in the prior art.
Specific embodiment
Illustrate embodiments of the present invention below by way of specific specific example, those skilled in the art can be by this specification
Other advantages and efficacy of the present invention can be easily understood for disclosed content.The present invention can also pass through in addition different specific realities
The mode of applying is embodied or practiced, the various details in this specification can also based on different viewpoints and application, without departing from
Various modifications or alterations are carried out under spirit of the invention.It should be noted that diagram provided in following embodiment is only to show
Meaning mode illustrates basic conception of the invention, and in the absence of conflict, the feature in following embodiment and embodiment can phase
Mutually combination.
Wherein, the drawings are for illustrative purposes only and are merely schematic diagrams, rather than pictorial diagram, should not be understood as to this
The limitation of invention；Embodiment in order to better illustrate the present invention, the certain components of attached drawing have omission, zoom in or out, not
Represent the size of actual product；It will be understood by those skilled in the art that certain known features and its explanation may be omitted and be in attached drawing
It is understood that.
The same or similar label correspond to the same or similar components in the attached drawing of the embodiment of the present invention；It is retouched in of the invention
In stating, it is to be understood that if there is the orientation or positional relationship of the instructions such as term " on ", "lower", "left", "right", "front", "rear"
To be based on the orientation or positional relationship shown in the drawings, be merely for convenience of description of the present invention and simplification of the description, rather than indicate or
It implies that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore is described in attached drawing
The term of positional relationship only for illustration, is not considered as limiting the invention, for the ordinary skill of this field
For personnel, the concrete meaning of above-mentioned term can be understood as the case may be.
The present invention relates to a kind of big wide cut thin-walled skirtboard profiles of track vehicle body, contain following each group by weight percentage
Point, Si:0.60~0.80%, Fe:0.15~0.30%, Cu:0.2~0.25%, Mn:0.20~0.35%, Mg:0.60~
0.75%, Cr:0.12~0.25%, Zn :≤0.15%, Ti :≤0.05%, V:0.046~0.09%, Er:0.05~
0.10%, surplus is aluminium.
Preferably, the impurity of every kind of component is less than the 0.05 of the component weight, and total impurities are less than 0.15；The shape of the profile
Formula is sheet material, plate, forging or extrusion.
The invention further relates to a kind of extrusion process of the big wide cut thin-walled skirtboard profile of track vehicle body, are processed to above-mentioned
Profile, comprising the following steps:
S1 is produced on extruder, sets mold temperature as T1, and extrusion cylinder temperature is T2, extrusion ratio λ, squeezes speed
Degree is v；
It is quenched after S2 extrusion forming, hardening heat both ends are T3, middle part T4；
Ageing treatment is carried out after S3 quenching, the processing time is t, treatment temperature T8；
S4 examines profile intensity, and test stone includes the group that one or more combinations of following standard are formed, surrender
Intensity, tensile strength, elongation percentage.
Preferably, in step sl, ingot casting using staged heat, the temperature from head to tail portion be followed successively by T5, T6,
T7；In step sl, 490 DEG C≤T1≤510 DEG C；440℃≤T2≤460℃；50≤λ≤90；1.5m/min≤v≤2.5m/
min；520℃≤T5≤530℃,510℃≤T6≤520℃,490℃≤T6≤500℃；380℃≤T3≤420℃,340℃
≤T4≤380℃；7h≤t≤9h；170℃≤T8≤180℃；In step s 4, it is 290- that test stone, which is yield strength,
320MPA, tensile strength 320-340MPA, elongation percentage 15-18% include both ends extreme value in above-mentioned test stone.
In the particular embodiment, using 12500T extruder, extrusion ratio is adjusted according to actual production conditions, increases and squeezes
Power guarantees that product can smooth extrusion forming；It is quenched by the way of air-cooled, baffle is added in outlet, at overaging
Testing product after reason.Due to being added to rare earth element er in profile ingredient, the alloying action of Er is significant, can shape in aluminium alloy
At nanoscale Al3Er hardening constituent, can obvious refining aluminum alloy tissue, improve the recrystallization temperature of aluminium alloy, inhibition is tied again
Jingjing grain is grown up, the effective generation for controlling coarse-grain, and promotes the precipitation of main hardening constituent, increases substantially the intensity of aluminium alloy
And plasticity, and by forming the equal multi-level mechanism of action of complex intensifying, obtain heat resistance, anti-fatigue performance and corrosion resistance
The comprehensive performances such as energy.
In the actual operation process, the transformation to mold has been carried out, two sections of original skirtboard up and down have been incorporated in
Together, it is designed to the mold of one big wide cut ratio, then is also easy to produce contracting tail and coarse-grain and easily for aluminium by changing both sides free end
Channelization angle is designed at insufficient position, and since extrusion ratio is big, and wall is thin, and die nose adds flow-guilding mold to be spreaded, and guarantees whole
The flow velocity of profile is consistent.Mould structure can be adjusted in such a way that examination squeezes, to reach design standard.Above and below before improvement
Skirt shape difference is as shown in Figures 2 and 3, and improved track skirt shape is as shown in Figure 1.
The present invention, by adjusting the ingredient of alloy, joined micro rare earth element on the basis of original technology, and pass through
The profile that can only be produced respectively in the prior art is combined together by the improvement of technology and mold, realizes the one of profile
Secondary molding, without welding；Again by the adjustment of technology, high-precision, the life of large-duty car body track skirtboard are realized
It produces, provides effective molding scheme suitable for thin, wide profile, solve and rely only on later period welding ability in the prior art in fact
Now the technical issues of this kind of shape extrusion, good process data and advanced extruding skill are provided for later industrial production
Art.
Finally, it is stated that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although referring to compared with
Good embodiment describes the invention in detail, those skilled in the art should understand that, it can be to skill of the invention
Art scheme is modified or replaced equivalently, and without departing from the objective and range of the technical program, should all be covered in the present invention
Scope of the claims in.
Claims (10)
1. a kind of big wide cut thin-walled skirtboard profile of track vehicle body, it is characterised in that: contain following each group by weight percentage
Point, Si:0.60~0.80%, Fe:0.15~0.30%, Cu:0.2~0.25%, Mn:0.20~0.35%, Mg:0.60~
0.75%, Cr:0.12~0.25%, Zn :≤0.15%, Ti :≤0.05%, V:0.046~0.09%, Er:0.05~
0.10%, surplus is aluminium.
2. the big wide cut thin-walled skirtboard profile of track vehicle body as described in claim 1, it is characterised in that: the impurity of every kind of component
Less than the 0.05 of the component weight, total impurities are less than 0.15.
3. the big wide cut thin-walled skirtboard profile of track vehicle body as described in claim 1, it is characterised in that: the form of the profile is
Sheet material, plate, forging or extrusion.
4. a kind of extrusion process of the big wide cut thin-walled skirtboard profile of track vehicle body, which comprises the following steps:
S1 is produced on extruder, sets mold temperature as T1, and extrusion cylinder temperature is T2, extrusion ratio λ, and extrusion speed is
v；
It is quenched after S2 extrusion forming, hardening heat both ends are T3, middle part T4；
Ageing treatment is carried out after S3 quenching, the processing time is t, treatment temperature T8；
S4 examine profile intensity, test stone include following standard one or more combinations formed group, yield strength,
Tensile strength, elongation percentage.
5. the extrusion process of the big wide cut thin-walled skirtboard profile of track vehicle body as described in claim 4, it is characterised in that；In step
In rapid S1, ingot casting is heated using staged, and the temperature from head to tail portion is followed successively by T5, T6, T7.
6. the extrusion process of the big wide cut thin-walled skirtboard profile of track vehicle body as described in claim 4, it is characterised in that；In step
In rapid S1,490 DEG C≤T1≤510 DEG C；440℃≤T2≤460℃；50≤λ≤90；1.5m/min≤v≤2.5m/min.
7. the extrusion process of the big wide cut thin-walled skirtboard profile of track vehicle body as described in claim 5, it is characterised in that；520
℃≤T5≤530℃、510℃≤T6≤520℃、490℃≤T6≤500℃。
8. the extrusion process of the big wide cut thin-walled skirtboard profile of track vehicle body as described in claim 4, it is characterised in that；380
℃≤T3≤420℃、340℃≤T4≤380℃。
9. the extrusion process of the big wide cut thin-walled skirtboard profile of track vehicle body as described in claim 4, it is characterised in that: 7h≤
t≤9h；170℃≤T8≤180℃.
10. the extrusion process of the big wide cut thin-walled skirtboard profile of track vehicle body as described in claim 4, it is characterised in that:
In step S4, it is 290-320MPA, tensile strength 320-340MPA, elongation percentage 15-18% that test stone, which is yield strength,
It include both ends extreme value in above-mentioned test stone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811204151.3A CN109280819A (en) | 2018-10-16 | 2018-10-16 | A kind of big wide cut thin-walled skirtboard profile of track vehicle body and its extrusion process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811204151.3A CN109280819A (en) | 2018-10-16 | 2018-10-16 | A kind of big wide cut thin-walled skirtboard profile of track vehicle body and its extrusion process |
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| CN109280819A true CN109280819A (en) | 2019-01-29 |
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| CN201811204151.3A Pending CN109280819A (en) | 2018-10-16 | 2018-10-16 | A kind of big wide cut thin-walled skirtboard profile of track vehicle body and its extrusion process |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109680189A (en) * | 2019-01-31 | 2019-04-26 | 东莞市润华铝业有限公司 | A kind of high-ductility measuring body aluminum profile and its preparation process by force |
| CN110592436A (en) * | 2019-09-30 | 2019-12-20 | 广东和胜新能源汽车配件有限公司 | Aluminum alloy and preparation method thereof |
| CN110904365A (en) * | 2019-11-27 | 2020-03-24 | 亚太轻合金(南通)科技有限公司 | Novel 3-series aluminum alloy and preparation method thereof |
| CN115301946A (en) * | 2022-08-18 | 2022-11-08 | 杨俊林 | Method for improving waist drum shape of neodymium iron boron sintered blank magnet and die pressure head thereof |
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| CN107267823A (en) * | 2017-07-07 | 2017-10-20 | 江西创迪科技有限公司 | A kind of aviation alloyed aluminium |
| CN107326227A (en) * | 2017-08-14 | 2017-11-07 | 山东南山铝业股份有限公司 | Rail transit vehicle body skirtboard aluminium alloy extrusions and its manufacture method |
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2018
- 2018-10-16 CN CN201811204151.3A patent/CN109280819A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107267823A (en) * | 2017-07-07 | 2017-10-20 | 江西创迪科技有限公司 | A kind of aviation alloyed aluminium |
| CN107326227A (en) * | 2017-08-14 | 2017-11-07 | 山东南山铝业股份有限公司 | Rail transit vehicle body skirtboard aluminium alloy extrusions and its manufacture method |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109680189A (en) * | 2019-01-31 | 2019-04-26 | 东莞市润华铝业有限公司 | A kind of high-ductility measuring body aluminum profile and its preparation process by force |
| CN109680189B (en) * | 2019-01-31 | 2021-03-02 | 东莞市润华铝业有限公司 | High-plasticity strong-compression-resistance aluminum profile and preparation process thereof |
| CN110592436A (en) * | 2019-09-30 | 2019-12-20 | 广东和胜新能源汽车配件有限公司 | Aluminum alloy and preparation method thereof |
| CN110904365A (en) * | 2019-11-27 | 2020-03-24 | 亚太轻合金(南通)科技有限公司 | Novel 3-series aluminum alloy and preparation method thereof |
| CN115301946A (en) * | 2022-08-18 | 2022-11-08 | 杨俊林 | Method for improving waist drum shape of neodymium iron boron sintered blank magnet and die pressure head thereof |
| CN115301946B (en) * | 2022-08-18 | 2024-05-14 | 杨俊林 | Method for improving waist drum shape of NdFeB sintered blank magnet |
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Application publication date: 20190129 |