CN100354444C - Magnesium-ally mud-guard and production method - Google Patents
Magnesium-ally mud-guard and production method Download PDFInfo
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- CN100354444C CN100354444C CNB2006100131728A CN200610013172A CN100354444C CN 100354444 C CN100354444 C CN 100354444C CN B2006100131728 A CNB2006100131728 A CN B2006100131728A CN 200610013172 A CN200610013172 A CN 200610013172A CN 100354444 C CN100354444 C CN 100354444C
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Abstract
The present invention discloses a magnesium-ally mudguard and a production method thereof, and the aim of the present invention is to provide a magnesium-alloy mudguard having high mechanical property, light weight, and low price and the production method of high efficiency and good quality. The magnesium-alloy mud-guard is made from magnesium-alloy materials, the production method of the magnesium-alloy mud-guard comprises the following steps: magnesium alloy bar stocks are treated by shelling and later are put into a heating furnace to be heated to 400 DEG C, the heated magnesium alloy bar stocks are cooled to room temperature in the air after the temperature is preserved for 24 hours, and then, the magnesium alloy bar stocks are put into the heating furnace to be heated to 350 to 400 DEG C and are preserved for 3 hours; then, the magnesium alloy bar stocks are put into an extruding machine to be extruded into proximate matters, relief annealing or artificial ageing treatment is further carried out, and later mechanical molding of the mud-guard is carried out. After magnesium series alloys of the present invention pass through heating treatment, the combination properties, such as strength, plasticity, etc., of products are well matched, and mechanical properties needed by mud-guards of various non-motor vehicles can be obtained. The present invention has the advantages of light weight, high strength, high rigidity, strong shock-resistant force and difficult deformation after use for long term.
Description
Technical field
The present invention relates to a kind of part of bicycle, particularly the bicycle mud plate of magnesium alloy materials and the method for producing this mud plate with pressing method.
Background technology
At present, the owning amount of China's bicycle (as bike, electric bicycle, tricycle etc.) is very big, with bike, about 500,000,000 in the owning amount of China's bike, with bike as the number of walking-replacing tool about 600,000,000.But along with the raising of people's quality of life and the transformation of philosophy of life, bike more becomes the best instrument of Sport ﹠ Casual active when taking on walking-replacing tool.In the U.S. 20,000,000 people body-building is by bike arranged at present; In Europe, by bike " one-day tour " also become one of the most fashionable fashion mode of motion.
Aspect the material of selecting bike mud plate, the countries in the world cycle manufacturer is all set about from high-performance, lightweight.Main material has steel, aluminium alloy, carbon fiber, titanium alloy etc.It makes material is that, directions such as mechanical property good, good looking appearance, low price the lightest towards weight develop.At present, bike mud plate mainly adopts aluminum alloy materials.But the extrusion temperature height that aluminium alloy processing needs, the melting cost is also high, and oxide treatment has pollution to environment.
Magnesium alloy is the lightest, specific tenacity of most popular quality and the high alloy of specific rigidity on the contemporary industry engineering.The price that magnesium alloy is present be lower than aluminium alloy by weight, and its proportion is 2/3rds of aluminium alloy.So by volume calculates its price and be significantly less than aluminium alloy, and the silver color of magnesium alloy product is noble elegant, exquisite in texture, elegant in appearance have a feeling of high class.But because magnesium alloy technology controlling and process narrow range, especially relatively strict to the temperature that hot extrusion requires, the viscous deformation performance is relatively poor relatively, is unfavorable for reasons such as mechanical-moulded, therefore, produces bicycle mud plate with magnesium alloy and has very big difficulty.
Summary of the invention
The present invention is in order to overcome weak point of the prior art, a kind of higher mechanical properties that has to be provided, and is in light weight, the production method of magnesium-ally mud-guard that price is low and efficient height, the measured magnesium-ally mud-guard of matter.
The present invention is achieved through the following technical solutions:
A kind of magnesium-ally mud-guard is characterized in that, is made by magnesium alloy materials, and the concrete composition of described magnesium alloy materials is: contain by weight percentage: 3-6%Al, the magnalium series of surplus Mg and trace impurity; Perhaps for containing by weight percentage: 3-6%Al, 0.5-1%Zn, the magnalium zinc series of surplus Mg and trace impurity; Perhaps for containing by weight percentage: 3-6%Al, 0.2-1%Mn, the magnalium manganese series of surplus Mg and trace impurity.
A kind of production method of magnesium-ally mud-guard is characterized in that, comprises the steps:
(1) selects the magnesium alloy rod described in the claim 1 for use, processing is removed the peel on its surface, put into process furnace afterwards and be heated to 400 ℃, be incubated 24 hours and carry out the homogenizing annealing processing;
(2) homogenizing annealing is come out of the stove after handling, and air cooling is put into process furnace again and is heated to 350-400 ℃ to room temperature, is incubated 3 hours; Extrusion mould is heated to 340-380 ℃ simultaneously, the extruding barrel is heated to 340-380 ℃;
(3) magnesium alloy rod of above-mentioned heating is put into extrusion machine and be squeezed into section bar, extrusion speed is 3-7m/min;
(4) section bar that obtains of extruding is put into and is heated to 180-200 ℃ in the process furnace, be incubated 1-2 hour and carries out stress relief annealing, perhaps is heated to 200-220 ℃, be incubated 12 hours and carries out the artificial aging processing, and the air cooling of coming out of the stove afterwards arrives room temperature;
(5) section bar that will produce the mud plate through machinery circle circle, mud plate thrust, punching folder waist, surface treatment, hanger assembling obtain bike mud panel products.
The surface treatment method of producing the section bar of mud plate is anodic oxidation or spraying clear lacquer treatment process.Add the heating of thermal recovery electrical heater, and in heat-processed, adopt the circulation of multistage temperature control forced gas.
The present invention has following technique effect:
1. the magnesium series alloy of the present invention's selection is after Overheating Treatment, over-all properties no-floats such as the intensity of product and plasticity, can obtain the mechanical property that all kinds of bicycles (bike, electric bicycle, tricycle) mud plate needs, be applicable to the needs of producing the mud plate.And the mud plate of producing is in light weight, and the specific tenacity height ratio height of quality (intensity of magnesium alloy with) has certain supporting capacity.Young's modulus is little, good rigidly, and seismic force is strong, and life-time service is not yielding.Product bright in colour attractive in appearance, noble elegant, exquisite in texture, elegant in appearance have a feeling of high class.And magnesium is the environmental protection non-ferrous metal, good environmental protection, environmentally safe.
2. in the method for the present invention processing is removed the peel on the magnesium ingot surface, improved quality product.Homogenizing annealing processing, extruding and ageing treatment are effectively combined, and, make the The comprehensive performance uniformity, the qualification rate height of product by strictness control to processing condition.The production efficiency height is fit to suitability for industrialized production, may for providing with magnesium series alloy mass production mud plate.
Embodiment
Below in conjunction with specific embodiment to the detailed description of the invention.
Its structure of bicycle of the present invention (bike, electric bicycle, tricycle) mud plate and shape are with original identical, be characterised in that the mud plate made by magnesium alloy materials, the concrete composition of described magnesium alloy materials is: contain by weight percentage: 3-6%Al, the magnalium series of surplus Mg and trace impurity, perhaps for containing by weight percentage: 3-6%Al, 0.5-1%Zn, the magnalium zinc series of surplus Mg and trace impurity, perhaps for containing by weight percentage: 3-6%Al, 0.2-1%Mn, the magnalium manganese series of surplus Mg and trace impurity.Wherein the trace impurity total amount is less than 0.5%.
The production method of magnesium-ally mud-guard of the present invention comprises the steps:
At first select the bar of above-mentioned magnesium alloy materials for use, processing is removed the peel on its surface, prevent because the influence that the bar surface oxidation produces quality product.Put into process furnace afterwards and be heated to 400 ℃, be incubated 24 hours and carry out the homogenizing annealing processing, the purpose that homogenizing annealing is handled is in order to reduce and to eliminate grain segregation, improving ingot casting chemical ingredients and structural ununiformity, so that improve its process plastic.
Homogenizing annealing is come out of the stove after handling, and air cooling is put into process furnace again and is heated to 350-400 ℃ to room temperature, is incubated 3 hours.Extrusion mould is heated to 350-380 ℃ simultaneously, the extruding barrel is heated to 350-380 ℃.With said temperature is that 350-400 ℃ magnesium alloy rod is put into extrusion machine and is squeezed into section bar, and extrusion speed is 3-7m/min.
The section bar that extruding is obtained is put into and is removed stress annealing in the process furnace or artificial aging is handled.Only remove stress annealing for aluminum content less than 6% alloy, so that the stress that produces when eliminating viscous deformation, prevent to thrust, crack, rupture in the punching folder waist process at subsequently machinery circle circle, mud plate or uses in be out of shape, alloy to aluminum content 6% can carry out ageing treatment, further improve its mechanical property, eliminate the internal stress that produces in the extrusion process, prevent that the mud plate in use is out of shape, and help the mechanical-moulded of back.Wherein the temperature of stress relief annealing is 180-200 ℃, and soaking time is 1-2 hour, and the air cooling of coming out of the stove afterwards is to room temperature.The Heating temperature of ageing treatment is 200-220 ℃, is incubated 12 hours, and the air cooling of coming out of the stove afterwards is to room temperature.
Mud profile material after the thermal treatment, again according to the method for the mud sheet metal forming of routine carry out that machinery circle circle, mud plate thrust, punching folder waist, surface treatment, carry out the hanger assembling again and obtain the magnesium-ally mud-guard product, the packing warehouse-in.For product is more attractive in appearance, behind punching folder waist, carry out conventional indentation, sharpening angle, polishing processing etc.The surface-treated method can adopt anodic oxidation commonly used or spraying clear lacquer treatment process to carry out.
The surface-treated technological process is: alkali cleaning, and--------pickling----is washed the----anodic oxidation or the spraying clear lacquer in washing.
When heating, preferably adopt the electrical heater heating, and adopt the method forced gas circulation of process furnace multistage temperature control, in heat-processed, control furnace temperature, to guarantee the homogeneity and the consistence of temperature by multistage.The temperature control hop count is many more, and furnace temperature is more all even stable.
Embodiment 1
The weight percent that cut-out is good is that the bar of the magnalium series alloy of 6%Al carries out surface peeling processing, puts into electrical heater afterwards and is heated to 400 ℃, is incubated 24 hours and carries out the homogenizing annealing processing.Come out of the stove air cooling to room temperature, put into electrical heater again and be heated to 355 ℃ ± 5 ℃, be incubated 3 hours.Adopt 4 sections control furnace temperature during heating, the forced gas circulation.Simultaneously extrusion mould is heated to 340 ℃ ± 10 ℃, the extruding barrel is heated to 340 ℃ ± 10 ℃.The magnesium alloy rod of above-mentioned heating is put into extrusion machine be squeezed into the mud profile material, extrusion speed is 3-4m/min.In the extrusion process, can not heat and too high magnesium rod fusing be caused burning, or temperature is too low can not push or squeeze mould bad.Needs adopt conventional method to interrupt sawing, move material according to producing for extruding back, aligning, scale sawing.
Above-mentioned mud plate is put in the aging oven heating carry out ageing treatment, Heating temperature is 210 ℃ ± 10 ℃, be incubated 12 hours, and the air cooling of coming out of the stove afterwards arrives room temperature.
Produce the section bar of mud plate, again through machinery circle circle, mud plate thrust, punching folder waist, indentation, sharpening angle, polishing, surface treatment, hanger assembling obtain the magnesium-ally mud-guard product, packing warehouse-in afterwards.Surface treatment can be adopted the anodic oxidation treatment or the spraying clear lacquer according to customer requirements.----washing----pickling----washing----anodic oxidation treatment that the technology of anodic oxidation treatment is alkali cleaning.The technology of the spraying clear lacquer is alkali cleaning, and------------washing----sprays the clear lacquer in pickling in washing.
The tensile strength of this composition magnesium-ally mud-guard can reach 300Mpa, and unit elongation can reach 16, and Brinell hardness can reach 60.
Embodiment 2
Producing weight percent is the magnalium series alloy mud plate of 3%Al, and production method is identical with embodiment 1, and just extrusion process is 395 ℃ ± 5 ℃ for the bar Heating temperature, is incubated 3 hours.Simultaneously extrusion mould is heated to 380 ℃ ± 10 ℃, the extruding barrel is heated to 380 ℃ ± 10 ℃.Extrusion speed is 6-7m/min.
Above-mentioned mud plate is put in the aging oven heating carry out stress relieving, Heating temperature is 190 ℃ ± 10 ℃, be incubated 1-2 hour, and the air cooling of coming out of the stove afterwards arrives room temperature.
The tensile strength of this composition magnesium-ally mud-guard can reach 250Mpa, and unit elongation can reach 14, and Brinell hardness can reach 45.
Embodiment 3
Producing weight percent is the magnalium series alloy mud plate of 5%Al, and production method is identical with embodiment 1.Extrusion process is 370 ℃ ± 5 ℃ for the bar Heating temperature, is incubated 3 hours.Simultaneously extrusion mould is heated to 360 ℃ ± 10 ℃, the extruding barrel is heated to 360 ℃ ± 10 ℃.Extrusion speed is 4-5m/min.
Above-mentioned mud plate is put in the aging oven heating carry out stress relieving, Heating temperature is 190 ℃ ± 10 ℃, be incubated 1-2 hour, and the air cooling of coming out of the stove afterwards arrives room temperature.
The tensile strength of this composition magnesium-ally mud-guard can reach 280Mpa, and unit elongation can reach 15, and Brinell hardness can reach 55.
Embodiment 4
The production weight percent is 6%Al, 0.5-1%Zn, and the magnalium zinc series mud plate of surplus Mg and trace impurity, production method is identical with example 1 with processing condition.Because element Zn has solution strengthening and ageing strengthening effect, so its mechanical property will be higher than magnalium series.
The tensile strength of this composition magnesium-ally mud-guard can reach 310Mpa, and unit elongation can reach 15, and Brinell hardness can reach 65.
Embodiment 5
The production weight percent is 3%Al, 0.5-1%Zn, and the magnalium zinc series mud plate of surplus Mg and trace impurity, production method is identical with example 2 with processing condition.
The tensile strength of this composition magnesium-ally mud-guard can reach 260Mpa, and unit elongation can reach 13, and Brinell hardness can reach 50.
Embodiment 6
The production weight percent is 5%Al, 0.5-1%Zn, and the magnalium zinc series mud plate of surplus Mg and trace impurity, production method is identical with example 3 with processing condition.
The tensile strength of this composition magnesium-ally mud-guard can reach 290Mpa, and unit elongation can reach 14, and Brinell hardness can reach 60.
Embodiment 7
The production weight percent is 6%Al, 0.2-1%Mn, the magnalium manganese series of surplus Mg and trace impurity.The mud plate, production method is identical with example 1 with processing condition.Alloying element Mn is little to the mechanical property contribution, but Mn can have the effect of crystal grain thinning.
The tensile strength of this composition magnesium-ally mud-guard and hardness and example 1 are roughly the same, but its plasticity ratio 1 is high by about 1%.
Embodiment 8
The production weight percent is 3%Al, 0.2-1%Mn, the magnalium manganese series of surplus Mg and trace impurity.The mud plate, production method is identical with example 2 with processing condition.
The tensile strength of this composition magnesium-ally mud-guard and hardness and example 2 are roughly the same, but its plasticity ratio 2 is high by about 1%.
Embodiment 9
The production weight percent is 5%Al, 0.2-1%Mn, the magnalium manganese series of surplus Mg and trace impurity.The mud plate, production method is identical with example 3 with processing condition.
The tensile strength of this composition magnesium-ally mud-guard and hardness and example 3 are roughly the same, but its plasticity ratio 3 is high by about 1%.
Will note following problem in process of production: the barrel end face will often be polished during extruding.Conscientiously observe magnesium rod temperature, can not heat and too high the fusing of magnesium rod be caused burning, or temperature is too low can not push or crowded bad mould.The interruption personnel tackle the section bar surface and conscientiously check, can not draw trace, scratch, bubble and turn round stubborn, as find that above situation should in time reflect, and adjust tractor speed and keep discharging straight, must not go to material beyond the graphite bar during discharging, move after the sawing material before must be up with decorative cover, do not allow upset when moving material, do not allow to twitch, during as necessary the twitch, should certain distance be arranged with other material, twitch gently.
After the sawing, section bar length should be alignd, and will at first check baffle plate scale distance during the scale sawing, and section bar must withstand baffle plate, and per 5 material carry out once, and the fracture end face can not jagged and stifled eye phenomenon.Sawed-off size must not be less than reference dimension 50MM.Self check surface quality, specified length and sawing quality after the sawing.
At first check the thickness of material during timeliness, the trade mark of material, different material are thick, the product of the different trades mark can not same stove timeliness, and aging time is meant the machine that should blow in earlier when soaking time does not comprise the warm-up time timeliness, opens heating tube again, checks that then fire door can not leak out.In ag(e)ing process, observed the running condition of a stove every 20 minutes, and the temperature of observing automatic temperature-controlled instrument shows whether consistent with the Glass tubing temperature.Close blower fan after closing heating tube earlier when timeliness finishes, open fire door and will expect in stove, to pull out cooling, should open the gate, workshop when coming out of the stove, and carry out the timeliness record.After the material cooling, to check the hardness of material.
Although relate to a kind of Magnesium Alloy Darby And Production Method and carried out special description disclosed with reference to embodiment, embodiment described above is illustrative and not restrictive, under the situation that does not break away from the spirit and scope of the present invention, all variations and modification are all within the scope of the present invention.
Claims (3)
1, a kind of production method of magnesium-ally mud-guard is characterized in that, comprises the steps:
(1) bar of selecting for use magnesium alloy materials to make is removed the peel processing to its surface, puts into process furnace afterwards and is heated to 400 ℃, is incubated 24 hours and carries out the homogenizing annealing processing; The concrete composition of described magnesium alloy materials is: contain by weight percentage: 3-6%Al, the magnalium series of surplus Mg and trace impurity; Perhaps for containing by weight percentage: 3-6%Al, 0.5-1%Zn, the magnalium zinc series of surplus Mg and trace impurity; Perhaps for containing by weight percentage: 3-6%Al, 0.2-1%Mn, the magnalium manganese series of surplus Mg and trace impurity;
(2) homogenizing annealing is come out of the stove after handling, and air cooling is put into process furnace again and is heated to 350-400 ℃ to room temperature, is incubated 3 hours; Extrusion mould is heated to 340-380 ℃ simultaneously, the extruding barrel is heated to 340-380 ℃;
(3) bar made of the magnesium alloy materials of above-mentioned heating is put into extrusion machine and is squeezed into section bar, and extrusion speed is 3-7m/min;
(4) section bar that obtains of extruding is put into and is heated to 180-200 ℃ in the process furnace, be incubated 1-2 hour and carries out stress relief annealing, perhaps is heated to 200-220 ℃, be incubated 12 hours and carries out the artificial aging processing, and the air cooling of coming out of the stove afterwards arrives room temperature;
(5) section bar that will produce the mud plate through machinery circle circle, mud plate thrust, punching folder waist, surface treatment, hanger assembling obtain bike mud panel products.
2, the production method of magnesium-ally mud-guard according to claim 1 is characterized in that, the surface treatment method of producing the section bar of mud plate is anodic oxidation or spraying clear lacquer treatment process.
3, the production method of magnesium-ally mud-guard according to claim 1 is characterized in that, adds the heating of thermal recovery electrical heater, and adopts the circulation of multistage temperature control forced gas in heat-processed.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2006100131728A CN100354444C (en) | 2006-02-17 | 2006-02-17 | Magnesium-ally mud-guard and production method |
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| CNB2006100131728A CN100354444C (en) | 2006-02-17 | 2006-02-17 | Magnesium-ally mud-guard and production method |
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| CN1814836A CN1814836A (en) | 2006-08-09 |
| CN100354444C true CN100354444C (en) | 2007-12-12 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101845607B (en) * | 2009-11-23 | 2014-03-12 | 北京有色金属研究总院 | Toughening and deformation processing method of magnesium alloy |
| CN105603281B (en) * | 2016-04-01 | 2017-10-27 | 重庆大学 | Low-cost and high-performance Mg Al Mn magnesium alloys |
| CN107283128B (en) * | 2017-07-19 | 2023-05-09 | 安徽国豪新能源特种车辆有限公司 | Manufacturing method of electric vehicle backrest frame convenient for adjusting and mounting backrest cushion |
| CN108342630B (en) * | 2018-05-18 | 2020-03-31 | 句容百利镁合金材料科技有限公司 | Magnesium alloy, preparation method of magnesium alloy section bar and preparation method of magnesium alloy rim |
| CN115466890B (en) * | 2022-09-19 | 2023-12-01 | 重庆科技学院 | High-strength and high-toughness Cu-containing magnesium alloy material capable of being rapidly degraded and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5507888A (en) * | 1993-03-18 | 1996-04-16 | Aluminum Company Of America | Bicycle frames and aluminum alloy tubing therefor and methods for their production |
| DE10033768A1 (en) * | 2000-07-12 | 2002-01-24 | Volkswagen Ag | Thin metal folding process for automobile part manufacture involves heating the thin area to be folded |
| CN2546106Y (en) * | 2002-03-15 | 2003-04-23 | 唐山亨利金属制品有限公司 | Aluminium alloy heat extruding section bar mud board |
| JP2004238657A (en) * | 2003-02-04 | 2004-08-26 | Kobe Steel Ltd | Method of manufacturing aluminum alloy plate for outer panel |
-
2006
- 2006-02-17 CN CNB2006100131728A patent/CN100354444C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5507888A (en) * | 1993-03-18 | 1996-04-16 | Aluminum Company Of America | Bicycle frames and aluminum alloy tubing therefor and methods for their production |
| DE10033768A1 (en) * | 2000-07-12 | 2002-01-24 | Volkswagen Ag | Thin metal folding process for automobile part manufacture involves heating the thin area to be folded |
| CN2546106Y (en) * | 2002-03-15 | 2003-04-23 | 唐山亨利金属制品有限公司 | Aluminium alloy heat extruding section bar mud board |
| JP2004238657A (en) * | 2003-02-04 | 2004-08-26 | Kobe Steel Ltd | Method of manufacturing aluminum alloy plate for outer panel |
Non-Patent Citations (4)
| Title |
|---|
| AZ91D镁合金管件挤压成形技术研究 于宝义.新技术新工艺，第11期 2005 * |
| 管材挤压工艺分析及实验研究 张士宏.金属成形工艺，第20卷第1期 2002 * |
| 镁合金成形技术的开发与应用 高仑.轻合金加工技术，第32卷第3期 2004 * |
| 镁合金的塑性加工技术 胡亚民.塑性加工技术，第5期 2004 * |
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Assignee: Tangshan Hengli Vehicle Parts Co., Ltd. Assignor: Yu Keru Contract fulfillment period: 2008.10.25 to 2026.2.17 contract change Contract record no.: 2008990001088 Denomination of invention: Magnesium-ally mud-guard and production method Granted publication date: 20071212 License type: Exclusive license Record date: 2008.11.4 |
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Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.10.25 TO 2026.2.17; CHANGE OF CONTRACT Name of requester: TANGSHAN HENGLI VEHICLE MATERIAL CO., LTD. Effective date: 20081104 |
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