CN117282939A - Aluminum alloy folding seat and processing method thereof and riding vehicle - Google Patents
Aluminum alloy folding seat and processing method thereof and riding vehicle Download PDFInfo
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- CN117282939A CN117282939A CN202210686559.9A CN202210686559A CN117282939A CN 117282939 A CN117282939 A CN 117282939A CN 202210686559 A CN202210686559 A CN 202210686559A CN 117282939 A CN117282939 A CN 117282939A
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- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 65
- 238000003672 processing method Methods 0.000 title claims abstract description 18
- 238000001125 extrusion Methods 0.000 claims abstract description 86
- 238000005266 casting Methods 0.000 claims abstract description 80
- 229910000676 Si alloy Inorganic materials 0.000 claims abstract description 71
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 claims abstract description 71
- 239000007788 liquid Substances 0.000 claims abstract description 58
- 238000000034 method Methods 0.000 claims abstract description 36
- 239000000956 alloy Substances 0.000 claims description 21
- 229910052782 aluminium Inorganic materials 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 11
- 229910045601 alloy Inorganic materials 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 8
- 238000003754 machining Methods 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 230000032683 aging Effects 0.000 claims description 6
- 238000007670 refining Methods 0.000 claims description 5
- 239000006104 solid solution Substances 0.000 claims description 5
- 238000003723 Smelting Methods 0.000 claims description 4
- 238000007872 degassing Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 229910052748 manganese Inorganic materials 0.000 claims description 3
- 238000005498 polishing Methods 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 229910052725 zinc Inorganic materials 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 abstract description 6
- 239000010959 steel Substances 0.000 abstract description 6
- 229910001095 light aluminium alloy Inorganic materials 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000005242 forging Methods 0.000 description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 9
- 239000007787 solid Substances 0.000 description 7
- 238000004512 die casting Methods 0.000 description 5
- 239000011343 solid material Substances 0.000 description 5
- 239000011344 liquid material Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 2
- 238000011534 incubation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
Classifications
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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
- B22D18/00—Pressure casting; Vacuum casting
- B22D18/02—Pressure casting making use of mechanical pressure devices, e.g. cast-forging
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
- B62J1/00—Saddles or other seats for cycles; Arrangement thereof; Component parts
- B62J1/08—Frames for saddles; Connections between saddle frames and seat pillars; Seat pillars
-
- 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
-
- 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
- C22F1/002—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working by rapid cooling or quenching; cooling agents used therefor
-
- 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
- C22F1/043—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 with silicon as the next major constituent
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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)
- Forging (AREA)
Abstract
The invention relates to an aluminum alloy folding seat, a processing method thereof and a riding vehicle. The processing method of the aluminum alloy folding seat comprises the following steps: pouring a liquid aluminum-silicon alloy prepared in advance into an extrusion charging barrel; extruding and injecting the liquid aluminum-silicon alloy in the extrusion charging barrel into a die cavity of a seat die by utilizing an extrusion punch to form a casting of the aluminum alloy folding seat; and taking out the casting from the seat mold after the casting of the aluminum alloy folding seat is solidified. The invention can solve the problems that the folding seat in the traditional technology is welded by steel or forged by light aluminum alloy, but the forming process of the processing modes is longer and the cost is higher.
Description
Technical Field
The invention relates to the technical field of riding vehicles, in particular to an aluminum alloy folding seat, a processing method thereof and a riding vehicle.
Background
Along with the development progress of urban roads and traffic, riding vehicles such as electric scooters and the like gradually become the mainstream choice of people for short-distance light travel. Also, seats for ride-on vehicles are often provided in a folded configuration for ease of assembly and portability. In the prior art, some folding seats of the riding vehicle are welded by steel, and some folding seats are forged by light aluminum alloy, but the two processing modes have longer forming procedures and higher cost.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is that the folding seat in the traditional technology is welded by steel or forged by light aluminum alloy, but the forming process of the processing modes is longer and the cost is higher.
In order to solve the technical problems, the invention provides a processing method of an aluminum alloy folding seat, which comprises the following steps:
pouring a liquid aluminum-silicon alloy prepared in advance into an extrusion charging barrel;
extruding and injecting the liquid aluminum-silicon alloy in the extrusion charging barrel into a die cavity of a seat die by utilizing an extrusion punch to form a casting of the aluminum alloy folding seat;
and taking out the casting from the seat mold after the casting of the aluminum alloy folding seat is solidified.
Optionally, the casting of the pre-prepared liquid aluminum silicon alloy into the extrusion barrel comprises:
smelting an alloy ingot of the aluminum-silicon alloy into liquid aluminum-silicon alloy;
pouring liquid aluminum-silicon alloy into an extrusion charging barrel;
the aluminum-silicon alloy comprises the following specific components: 6.5 to 7.5 percent of Si, less than or equal to 0.05 percent of Mn, less than or equal to 0.1 percent of Cu, 0.3 to 0.45 percent of Mg, less than or equal to 0.12 percent of Fe, less than or equal to 0.05 percent of Zn, less than or equal to 0.2 percent of Ti and 91.5 to 93.2 percent of Al.
Optionally, after the alloy ingot of the aluminum-silicon alloy is smelted into the liquid aluminum-silicon alloy, the method further comprises:
and degassing, refining and detecting the element components of the aluminum-silicon alloy melted into a liquid state.
Optionally, before pouring the liquid aluminum-silicon alloy into the extrusion barrel, the method further comprises:
and preheating the extrusion punch, the extrusion charging barrel and the die cavity of the seat die.
Optionally, the extruding the liquid aluminum silicon alloy in the extrusion material cylinder into the die cavity of the seat die by using the extrusion punch comprises:
moving the extrusion punch in the extrusion material cylinder at a speed of 0.25-0.35m/s, so that the extrusion punch injects the liquid aluminum-silicon alloy in the extrusion material cylinder into a die cavity of the seat die from a sprue channel of the seat die;
and continuously injecting the liquid aluminum-silicon alloy into the die cavity of the seat die from the extrusion charging barrel by utilizing the extrusion punch until the die cavity of the seat die is filled.
Optionally, after the mold cavity of the seat mold is filled, the method further comprises:
the pressure of the extrusion punch is increased to 130-150MPa and maintained for 60-120 s.
Optionally, after the casting of the aluminum alloy folding seat is solidified, the casting is taken out from the seat mold, including:
after the casting of the aluminum alloy folding seat is solidified, ejecting the casting out of a die cavity of the seat die by using a thimble;
and processing the taken casting to obtain a finished product of the aluminum alloy folding seat.
Optionally, the processing the removed casting comprises:
water cooling is carried out on the taken casting, a pouring gate part of the casting is sawed off, and polishing treatment is carried out on the surface of the casting;
carrying out solid solution aging heat treatment on the casting;
and machining the critical dimension of the casting.
In addition, the invention also provides an aluminum alloy folding seat, which is manufactured by adopting the processing method of the aluminum alloy folding seat.
In addition, the invention also provides a riding vehicle, which comprises:
a vehicle body; the method comprises the steps of,
the aluminum alloy folding seat is arranged on the vehicle main body.
The technical scheme provided by the invention has the following advantages:
according to the processing method of the aluminum alloy folding seat, the liquid aluminum-silicon alloy is extruded and injected into the seat mold, so that the aluminum alloy folding seat is formed by casting. Compared with the prior art that a folding seat is manufactured by a steel welding process or an aluminum alloy forging process, the folding seat is manufactured by an aluminum alloy extrusion casting process, so that the manufacturing process and time can be greatly shortened, the blank precision can be improved, the machining allowance can be reduced, the cost can be reduced, and meanwhile, parts stronger than the forging process and better in toughness can be obtained.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic flow chart of the overall steps of a method for manufacturing an aluminum alloy folding seat according to an embodiment of the present invention;
fig. 2 is a detailed step flow diagram of step S100 of the processing method of the aluminum alloy folding seat according to the embodiment of the invention;
fig. 3 is a detailed step flow diagram of step S200 of the processing method of the aluminum alloy folding seat according to the embodiment of the invention;
fig. 4 is a detailed step flow diagram of step S300 of the processing method of the aluminum alloy folding seat according to the embodiment of the invention.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. The invention will be described in detail hereinafter with reference to the drawings in conjunction with embodiments. It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.
In the present invention, unless otherwise indicated, terms of orientation such as "upper, lower, top, bottom" are used generally with respect to the orientation shown in the drawings or with respect to the component itself in the vertical, upright or gravitational direction; also, for ease of understanding and description, "inner and outer" refers to inner and outer relative to the profile of each component itself, but the above-mentioned orientation terms are not intended to limit the present invention.
In the prior art, some folding seats of riding vehicles such as scooter are welded by steel, and some folding seats are forged by light aluminum alloy, but the forming procedures of the two processing modes are longer, and the cost is higher. In order to solve the technical problems, the invention provides an aluminum alloy folding seat and a processing method thereof, which can shorten the manufacturing process and the time, reduce the cost and improve the product quality.
Example 1
The embodiment provides a processing method of an aluminum alloy folding seat, as shown in fig. 1, which specifically comprises the following steps:
s100, pouring a liquid aluminum-silicon alloy prepared in advance into an extrusion charging barrel;
s200, extruding and injecting the liquid aluminum-silicon alloy in the extrusion material cylinder into a die cavity of a seat die by utilizing an extrusion punch to form a casting of the aluminum alloy folding seat;
s300, taking out the casting from the seat mold after the casting of the aluminum alloy folding seat is solidified.
The aluminum alloy folding seat is formed by casting by extruding liquid aluminum-silicon alloy into a seat mold. Compared with the prior art that a folding seat is manufactured by a steel welding process or an aluminum alloy forging process, the folding seat is manufactured by an aluminum alloy extrusion casting process, so that the manufacturing process and time can be greatly shortened, the blank precision can be improved, the machining allowance can be reduced, the cost can be reduced, and meanwhile, parts stronger than the forging process and better in toughness can be obtained.
Further, as shown in fig. 2, in step S100, the liquid aluminum-silicon alloy prepared in advance is poured into the extrusion barrel, which may specifically include the following steps:
s110, smelting the alloy ingot of the aluminum-silicon alloy into liquid aluminum-silicon alloy.
Namely, the solid aluminum-silicon alloy material is smelted into the liquid aluminum-silicon alloy material, which is convenient for the subsequent extrusion casting. In addition, the solid aluminum-silicon alloy material, namely the aluminum-silicon alloy ingot, can be a356.2 cast aluminum alloy ingot, and can also be selected according to the requirement.
Furthermore, the component content of the alloy ingot of the aluminum-silicon alloy has certain requirements. Specifically, the liquid materials of the aluminum-silicon alloy can have the following specific components: 6.5 to 7.5 percent of Si, less than or equal to 0.05 percent of Mn, less than or equal to 0.1 percent of Cu, 0.3 to 0.45 percent of Mg, less than or equal to 0.12 percent of Fe, less than or equal to 0.05 percent of Zn, less than or equal to 0.2 percent of Ti and 91.5 to 93.2 percent of Al.
In the embodiment, the aluminum-silicon alloy with high purity is obtained by reasonably setting the content of the metal Al, si, mn, cu, mg, fe, zn, ti and the like, and the aluminum-silicon alloy folding seat is more suitable for extrusion casting of high-strength and high-toughness aluminum alloy folding seats.
And the alloy ingot of the aluminum-silicon alloy can be smelted into liquid aluminum-silicon alloy at a preset smelting temperature, such as about 660-700 ℃. For example, an ingot of an aluminum-silicon alloy may be melted at 660 ℃, 680 ℃, or 700 ℃. In addition, the alloy ingot of the aluminum-silicon alloy can be smelted at any temperature between 660 ℃ and 700 ℃, or at a temperature above 700 ℃.
S120, pouring the liquid aluminum-silicon alloy into the extrusion charging barrel. After the solid material of the aluminum-silicon alloy is smelted into a liquid state, the solid material is injected into the extrusion charging barrel at a preset casting speed, so that the solid material is conveniently injected into the seat mold of the folding seat through the extrusion charging barrel, and the method is simple and convenient.
Further, a liquid or semi-solid aluminum-silicon alloy material (aluminum liquid) can be poured into the extrusion barrel from a pouring gate at a preset pouring speed, and the preset pouring speed can be 0.4-0.6m/s. Specifically, the aluminum-silicon alloy material (aluminum liquid) can be poured into the extrusion material cylinder from the pouring gate at a preset pouring speed of 0.4m/s, or 0.5m/s, or 0.6m/s, so that the pouring speed of the aluminum-silicon alloy material (aluminum liquid) is proper, and the aluminum-silicon alloy material is not easy to cool and solidify to influence the subsequent molding. In addition, according to the requirement, any preset pouring speed between 0.4 and 0.6m/s can be adopted to pour the aluminum-silicon alloy material (aluminum liquid).
Also, after melting the alloy ingot of the aluminum-silicon alloy into a liquid aluminum-silicon alloy in step S110, the method may further include the steps of:
s130, degassing, refining and detecting the element components of the aluminum-silicon alloy melted into a liquid state. After the solid material of the aluminum-silicon alloy is smelted into a liquid state, the solid material is further required to be subjected to degassing and impurity-removing refining treatment so as to remove impurities in the liquid material and improve the purity of the aluminum-silicon alloy. Moreover, the element components of the liquid material can be detected to judge whether the components meet the requirements or not so as to ensure the product quality. If the detected element components of the liquid material are not in accordance with the requirements, impurity removal and refining treatment can be further carried out, or elements with insufficient content can be added.
Furthermore, before pouring the liquid aluminum-silicon alloy into the extrusion barrel in step S120, the method may further include the steps of:
and S140, preheating the extrusion punch, the extrusion material cylinder and the die cavity (die cavity) of the seat die. The die cavity of the extrusion punch, the extrusion charging barrel and the seat die is preheated, so that the die casting effect is not influenced by faster temperature drop in the process of die casting of the liquid aluminum-silicon alloy, and the product quality is influenced.
For example, the heating temperature of the mold cavity of the seat mold may be 180 ℃ -220 ℃. Specifically, the mold cavity may be heated to a temperature of 180 ℃, or 200 ℃, or 220 ℃, or the like. In addition, the temperature of the cavity may be heated to any of 180 ℃ to 220 ℃ or to a temperature of 220 ℃ or more, as required. In addition, the heating temperature of the extrusion punch and the extrusion charging barrel can be similar to the heating temperature of the die cavity, so that the liquid aluminum-silicon alloy temperature is prevented from falling more quickly.
Moreover, the extrusion punch head can be led to enter the position to be extruded in the extrusion charging barrel in advance, the seat die is led to be in a shape-closing and locking mode in advance, and then the extrusion punch head, the extrusion charging barrel and the die cavity of the seat die are heated to prepare for preheating before casting. In addition, the extrusion punch and the extrusion charging barrel can be heated first, and then the extrusion punch is extended into the extrusion charging barrel at the position to be extruded.
And before preheating, the die cavities of the extrusion punch, the extrusion charging barrel and the seat die can be cleaned and sprayed with a layer of heat-insulating and heat-preserving demoulding coating, so that the die casting and the later demoulding of the product are facilitated.
Further, as shown in fig. 3, in step S200, the liquid aluminum-silicon alloy in the extrusion cylinder is extruded and injected into the cavity of the seat mold by the extrusion punch, and specifically, the method may include the steps of:
s210, moving an extrusion punch in the extrusion charging barrel at a speed of 0.25-0.35m/S, so that the extrusion punch injects the liquid aluminum-silicon alloy in the extrusion charging barrel into a die cavity of the seat die from a sprue channel of the seat die.
After pouring the liquid or semi-solid aluminum-silicon alloy material (aluminum liquid) from the gate into the extrusion barrel, the extrusion punch can be controlled to extrude the liquid or semi-solid aluminum-silicon alloy material (aluminum liquid) from the extrusion barrel into the die cavity of the seat die at a preset extrusion speed. Wherein, the preset extrusion speed can be 0.25m/s, or 0.3m/s, or 0.35m/s, or any speed in the range of 0.25-0.35 m/s. In this way, liquid or semi-solid aluminum-silicon alloy material (aluminum liquid) is extruded from the extrusion charging barrel into the die cavity at a proper speed, so that the material can be molded stably and reliably.
And S220, continuously injecting the liquid aluminum-silicon alloy into the die cavity of the seat die from the extrusion charging barrel by utilizing the extrusion punch until the die cavity of the seat die is filled. The material in the extrusion material cylinder is continuously extruded and conveyed into the die cavity by the extrusion punch, and the die cavity is filled up to form a casting structure.
Further, in step S220, that is, until the cavity of the seat mold is filled, the following steps may be further included:
s230, increasing the pressure of the extrusion punch to 130-150MPa, and maintaining for 60-120S.
After the die cavity is filled with liquid or semi-solid aluminum-silicon alloy materials (aluminum liquid), the aluminum liquid forms a solidified casting, and then the initially solidified casting in the die cavity is subjected to pressure maintaining treatment to obtain a fully solidified casting. Specifically, the holding pressure may be 130MPa, 140MPa, or 150MPa, or any one of 130 to 150 MPa. Moreover, the dwell time may be 60s, or 100s, or 120s, or any time value from 60 to 120 s.
In the extrusion casting process, the procedure similar to die forging is carried out on the casting in a solidification state in a mechanical pressurizing and pressure maintaining mode, so that air holes and looseness in the casting are reduced, and coarse grain structures of the casting obtained by primary solidification are extruded and crushed into fine and uniform grain structures, so that the mechanical property of the whole casting is greatly improved.
In addition, as shown in fig. 4, after the casting of the aluminum alloy folding seat is solidified, the casting is taken out from the seat mold in step S300, which may specifically include the steps of:
s310, after the casting of the aluminum alloy folding seat is solidified, ejecting the casting out of a die cavity of the seat die by using a thimble. I.e. after the casting is solidified and formed, the casting can be taken out of the seat mold. Specifically, after the formed casting is cooled, the die casting blank of the aluminum alloy folding seat can be obtained through demoulding.
S320, processing the taken casting to obtain a finished product of the aluminum alloy folding seat. After the die casting blank of the aluminum alloy folding seat is obtained, further processing treatment is needed to obtain a finished product.
Further, in step S320, the removed casting is subjected to a machining process, which may specifically include the steps of:
s322, water-cooling the taken casting, sawing off a gate part of the casting, and polishing the surface of the casting.
After the casting blank is taken out of the die cavity, the temperature of the casting blank is higher, and the casting blank can be further processed after being cooled. Moreover, the casting blank is typically joined to the ladle and ladle, requiring sawing of the ladle and ladle. Then, the surface of the casting needs to be polished and cleaned to confirm that the inside has no air hole defect.
S324, carrying out solid solution aging heat treatment on the casting. And carrying out solid solution aging heat treatment on the casting to improve the product performance, so that the product can obtain mechanical properties with higher strength: the tensile strength can reach 305-310Mpa, the yield strength can reach 260-265Mpa, and the elongation can reach 8-10%.
Specifically, when the casting is subjected to heat treatment of solid solution aging, the casting can be kept at 510-550 ℃ for 2.5-3.5 hours. For example, the incubation may be at 510 ℃, or 530 ℃, or 550 ℃ for 2.5 hours, or 3 hours, or 3.5 hours; in addition, the temperature can be kept at any temperature of 510-550 ℃ for any time of 2.5-3.5h.
Furthermore, the water quenching may be performed at a temperature of 60-80℃for 350-450s. For example, the temperature may be maintained at 60℃or 70℃or 80℃for 350s or 400s or 450s; in addition, the water quenching may be performed at any temperature of 60 to 80 ℃ for any time of 350 to 450 seconds.
Furthermore, the ageing may be carried out at a temperature of 160-190℃for 2.5-3.5 hours. For example, the incubation may be at 160 ℃, or 175 ℃, or 190 ℃ for 2.5 hours, or 3 hours, or 3.5 hours; in addition, the temperature can be kept at any temperature of 160-190 ℃ for any time of 2.5-3.5h.
S326, machining the critical dimension of the casting. Therefore, the precision of the product can be improved, and the subsequent complete assembly is convenient.
Before the casting is machined, shot blasting treatment can be adopted to improve the surface roughness of the casting, so that the adhesive force is improved for subsequent surface treatment; then, less machining is applied to the casting to obtain the critical dimensions of the local location of the assembly hands.
In addition, the mold cavity of the seat mold related to the processing method of the aluminum alloy folding seat provided by the embodiment can be set to be a multi-cavity structure (such as a three-cavity, a four-cavity, a five-cavity and the like), and a plurality of folding seat products can be obtained by casting at the same time, so that the production efficiency is greatly improved.
The processing method of the aluminum alloy folding seat provided by the embodiment has the following beneficial effects: the process of the embodiment is a liquid direct forming process, and compared with a hot die forging process (pre-forging, final forging and trimming), the forming process is less; compared with the multi-channel process of hot die forging, the single part molding speed of the process is high, and the molding speed of the extrusion cast part is only about 5 seconds; the process of the embodiment can obtain parts with compact structures, and the strength and the toughness of the parts are higher than those of the forging.
Example 2
The embodiment provides an aluminum alloy folding seat, which is manufactured by adopting the processing method of the aluminum alloy folding seat in the embodiment 1. Moreover, the aluminum alloy folding seat in the embodiment is obtained through casting, and has excellent mechanical properties such as tensile strength, yield strength, elongation and the like.
The aluminum alloy folding seat in the embodiment can comprise an aluminum alloy upper folding seat and an aluminum alloy lower folding seat, which can be assembled to form a complete aluminum alloy upper folding seat. Moreover, both the aluminum alloy upper folding seat and the aluminum alloy lower folding seat can be manufactured by the processing method of the aluminum alloy folding seat described in the embodiment 1.
Example 3
The embodiment provides a riding vehicle, which comprises a vehicle main body and an aluminum alloy folding seat arranged on the vehicle main body. Through set up the folding seat of aluminum alloy on the bicycle for it not only has folding ability more portable, still has good supporting performance to the user.
In this embodiment, the riding vehicle may be a normal scooter with a support seat, or an electric power assisted scooter.
The riding vehicle may be a normal bicycle with a support seat, an electric bicycle, or an electric motorcycle.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (10)
1. A method of processing an aluminum alloy folding seat, the method comprising:
pouring a liquid aluminum-silicon alloy prepared in advance into an extrusion charging barrel;
extruding and injecting the liquid aluminum-silicon alloy in the extrusion charging barrel into a die cavity of a seat die by utilizing an extrusion punch to form a casting of the aluminum alloy folding seat;
and taking out the casting from the seat mold after the casting of the aluminum alloy folding seat is solidified.
2. The method of claim 1, wherein casting the pre-prepared liquid aluminum-silicon alloy into the extrusion barrel comprises:
smelting an alloy ingot of the aluminum-silicon alloy into liquid aluminum-silicon alloy;
pouring liquid aluminum-silicon alloy into an extrusion charging barrel;
the aluminum-silicon alloy comprises the following specific components: 6.5 to 7.5 percent of Si, less than or equal to 0.05 percent of Mn, less than or equal to 0.1 percent of Cu, 0.3 to 0.45 percent of Mg, less than or equal to 0.12 percent of Fe, less than or equal to 0.05 percent of Zn, less than or equal to 0.2 percent of Ti and 91.5 to 93.2 percent of Al.
3. The method of manufacturing an aluminum alloy folding seat according to claim 2, wherein after the alloy ingot of the aluminum-silicon alloy is melted into the liquid aluminum-silicon alloy, further comprising:
and degassing, refining and detecting the element components of the aluminum-silicon alloy melted into a liquid state.
4. The method of manufacturing an aluminum alloy folding seat according to claim 2, wherein before pouring the liquid aluminum-silicon alloy into the extrusion cylinder, further comprising:
and preheating the extrusion punch, the extrusion charging barrel and the die cavity of the seat die.
5. The method of any one of claims 1 to 4, wherein the extruding the liquid aluminum-silicon alloy in the extrusion cylinder into the cavity of the seat mold by the extrusion punch comprises:
moving the extrusion punch in the extrusion material cylinder at a speed of 0.25-0.35m/s, so that the extrusion punch injects the liquid aluminum-silicon alloy in the extrusion material cylinder into a die cavity of the seat die from a sprue channel of the seat die;
and continuously injecting the liquid aluminum-silicon alloy into the die cavity of the seat die from the extrusion charging barrel by utilizing the extrusion punch until the die cavity of the seat die is filled.
6. The method of claim 5, further comprising, after the mold cavity of the seat mold is filled, the steps of:
the pressure of the extrusion punch is increased to 130-150MPa and maintained for 60-120 s.
7. The method of processing an aluminum alloy folding seat according to any one of claims 1 to 4, wherein the step of taking out the casting from the seat mold after the casting of the aluminum alloy folding seat is solidified, comprises:
after the casting of the aluminum alloy folding seat is solidified, ejecting the casting out of a die cavity of the seat die by using a thimble;
and processing the taken casting to obtain a finished product of the aluminum alloy folding seat.
8. The method of claim 7, wherein the processing the removed casting comprises:
water cooling is carried out on the taken casting, a pouring gate part of the casting is sawed off, and polishing treatment is carried out on the surface of the casting;
carrying out solid solution aging heat treatment on the casting;
and machining the critical dimension of the casting.
9. An aluminum alloy folding seat, characterized in that the aluminum alloy folding seat is manufactured by adopting the processing method of the aluminum alloy folding seat according to any one of claims 1 to 8.
10. A riding vehicle, comprising:
a vehicle body; the method comprises the steps of,
the aluminum alloy folding seat as claimed in claim 9, provided on the vehicle body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210686559.9A CN117282939A (en) | 2022-06-17 | 2022-06-17 | Aluminum alloy folding seat and processing method thereof and riding vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210686559.9A CN117282939A (en) | 2022-06-17 | 2022-06-17 | Aluminum alloy folding seat and processing method thereof and riding vehicle |
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| Publication Number | Publication Date |
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| CN117282939A true CN117282939A (en) | 2023-12-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210686559.9A Pending CN117282939A (en) | 2022-06-17 | 2022-06-17 | Aluminum alloy folding seat and processing method thereof and riding vehicle |
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| Country | Link |
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| CN (1) | CN117282939A (en) |
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2022
- 2022-06-17 CN CN202210686559.9A patent/CN117282939A/en active Pending
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