CN106271460A - A kind of titanium alloy bicycle front fork method for welding - Google Patents
A kind of titanium alloy bicycle front fork method for welding Download PDFInfo
- Publication number
- CN106271460A CN106271460A CN201610835880.3A CN201610835880A CN106271460A CN 106271460 A CN106271460 A CN 106271460A CN 201610835880 A CN201610835880 A CN 201610835880A CN 106271460 A CN106271460 A CN 106271460A
- Authority
- CN
- China
- Prior art keywords
- titanium alloy
- front fork
- welding
- solder
- vacuum
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/008—Soldering within a furnace
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K28/00—Welding or cutting not covered by any of the preceding groups, e.g. electrolytic welding
- B23K28/02—Combined welding or cutting procedures or apparatus
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
- B23K9/173—Arc welding or cutting making use of shielding gas and of a consumable electrode
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
- B62K21/00—Steering devices
- B62K21/02—Front wheel forks or equivalent, e.g. single tine
Abstract
The open a kind of titanium alloy bicycle front fork method for welding of the present invention, uses method for welding welding front fork part, first passes through precision-investment casting front fork shoulder, then process streamline section front fork tube by hydraulic method；Finally being sufficient filling with gap between part with liquid solder carries out soldering.Use technical scheme, can promote the intensity of front fork, and improve the influence of thermal deformation of tubing, reduce manufacturing cost simultaneously.
Description
Technical field
The invention belongs to technical field of bicycles, particularly relate to a kind of titanium alloy bicycle front fork method for welding.
Background technology
Titanium alloy is due to the life of advantage the is widely used in sports bicycle vehicle frame such as its light weight, intensity is high, corrosion-resistant
In product.But the difficult forming of titanium alloy self.The fusing point of general titanium alloy is between 1500～1700 DEG C, than steel high 100～300
℃.Titanium alloy at high temperature chemical property is very active simultaneously, needs inert gas shielding when welding.This not only makes titanium alloy
Forming parts difficulty, also improves the cost of welding processing simultaneously.
Bicycle front fork is the support of fixing vehicle frame and front-wheel, and its intensity and reliability directly affect the safety of bicycle and make
With.Sports bicycle is the harshest to the requirement of vehicle frame performance, not only higher to the extreme requirement of strength used under environment, also wants
It is streamlined for seeking the tubing cross sectional shape making front fork, to reduce air drag.
Owing to traditional welding technology needs to melt solder with mother metal to weld simultaneously, but titanium alloy self fusing point
The highest, under high temperature, chemical property is very active simultaneously, is not appropriate for using welding technology welding.At present, at titanium alloy sport(s) car
The production process of front fork urgently needs one be applicable to titanium alloy material welding, disclosure satisfy that cross section special-shaped tubing gap, with
Time also ensure that the welding method of welding position intensity.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of titanium alloy bicycle front fork method for welding.
For achieving the above object, the present invention adopts the following technical scheme that:
A kind of titanium alloy bicycle front fork method for welding comprises the following steps,
S1, titanium alloy front fork shoulder use titanium alloy precise-investment casting method to prepare, and are first made front fork shoulder mould by waxed
Type, wraps up in the refractory materials such as several layers of clay in its appearance, and heating makes wax be melted out, thus obtains the empty mould formed by refractory material
Shell, then pour in sky formwork after titanium alloy material fusing, after titanium alloy cools down, refractory material is broken into pieces before obtaining titanium alloy
Crown；
S2, titanium alloy front fork tube are prepared by titanium alloy thin wall pipe material, first carry out titanium alloy pipe material pipe
Vacuum heat eliminates stress, then titanium alloy pipe is bored into suitable diameter, again after vacuum heat and then use
The way of shaped by fluid pressure progressively makes fairshaped titanium alloy front fork tube；
The soldering of S3, front fork pipe fitting and front fork shoulder connects, and comprises the following steps:
When S3.1, design need the part of soldering, at region to be welded preseting solder groove, it is ensured that whole brazing area spread by solder
Territory；
S3.2, part is carried out oil removing, cleaning；
S3.3, solder binding agent furnishing paste is placed in solder trough, after part is fitted into position, uses argon arc spot welding
Location keeps carrying out soldering under part fit-up gap and rigging position, vacuum, it is ensured that solder is treated by the abundant moistening of capillarity
Welding zone territory；
It is incubated after S3.4, vacuum brazing.
As preferably, solder uses Ti-37.5Zr-15Cu-10Ni；Vacuum brazing temperature is 940 ± 10 degree, protects after completing
Temperature 20-30 minute, be cooled to 840 ± 10 degree be incubated 30-40 minute again after furnace cooling；During vacuum be not more than 5 × 10-
2 Pascals.
The present invention has following several feature:
1. use method for welding welding front fork shoulder and front fork tube, compensate for limitation and the deficiency of conventional manual argon arc welding,
Production efficiency improves, and reduces welding cost.
2. soldered fitting design and Joining Technology have exempted from welding region stress concentration, it is ensured that soldered fitting mechanical property,
Improve properties of product and reliability.
3. titanium alloy pipe passes through hydraulic method molding, processes streamline section, appearance design novel and beautiful, it is simple to bicycle
The one-tenth of heterotype tubing produces.
Accompanying drawing explanation
Fig. 1 is brazing of titanium alloy front fork process chart；
Fig. 2 is front fork structure schematic diagram；
Fig. 3 is brazing area schematic diagram；
Fig. 4 is joint clearance of brazing schematic diagram.
Detailed description of the invention
As shown in Figures 1 to 4, the embodiment of the present invention provides a kind of titanium alloy bicycle front fork method for welding, including following
Step:
S1, common welding are difficult to alloy complex cavity part, and therefore complicated titanium alloy front fork shoulder uses
Titanium alloy precise-investment casting method manufactures.First it is made model by waxed, wraps up in the refractory materials such as several layers of clay in its appearance, add
Heat makes wax be melted out, thus obtains the empty formwork formed by refractory material, then pours sky formwork into after titanium alloy material fusing
In, after titanium alloy cools down, refractory material is broken into pieces and obtain titanium alloy casting.So final production go out complex-shaped, size is smart
Really, corner angle are clear, the titanium alloy front fork shoulder of surface smoothing.
S2, titanium alloy front fork tube rely on titanium alloy thin wall pipe material progressively to be processed, due to titanium by multiple working procedure
Alloy strength is big, and rebound degree is high, causes titanium alloy thin-walled tube material to be difficult to as shape tube, therefore want multistep working procedure processing and
Become.First titanium alloy pipe material pipe typically has stress, wants vacuum heat to eliminate stress before doing molding.Then titanium is closed
Gold pipe bores into suitable diameter, again after vacuum heat and then use the way of shaped by fluid pressure progressively to make fairshaped
Front fork cast.Shaped by fluid pressure is to control its shape, inner side topping up force feed with shell titanium alloy front fork tube mould, passes through hydraulic oil pressure
Power makes titanium alloy material progressively fit with outer casing mold, thus makes the streamline section shape of design.Use liquid as biography
Power media can implement control pressure, it is ensured that technological parameter all design in the range of, and can the most variable adjustment, especially
The titanium alloy opposite sex tubing being suitable for complex section shape becomes to produce.
S3, in order to realize front fork pipe fitting soldering connect, it is ensured that strength of joint and corrosion resistance all reach mother metal peer-level,
Following steps need to be have employed: when (1) design needs the part of soldering, at region to be welded preseting solder groove, it is ensured that solder is spread whole
Individual brazing area, improves ratio of brazing area；(2) part is carried out oil removing, cleaning；(3) solder binding agent furnishing paste is placed in pricker
In hopper, after part is fitted into position, uses argon arc spot welding location to keep under part fit-up gap and rigging position, vacuum and carry out
Soldering, it is ensured that solder passes through the abundant moistening of capillarity region to be welded, to reduce the stress concentration of spot welding, improves the property of joint
Energy；(4) it is incubated after vacuum brazing.
Embodiment 1:
The detailed description of the invention using welding method of the present invention comprises the following steps:
(1) make wax-pattern, carry out the precision-investment casting of front fork；
(2) titanium alloy pipe is processed as the shape tube of streamline section by hydraulic method；
(3) design of welding point is at part region to be welded preseting solder groove；
(4) by part oil removing pickling, surface clean is clean；
(5) use powdery Ti-37.5Zr-15Cu-10Ni as connecting material, solder is used poly (vinyl alcohol) binder furnishing
Paste is placed in solder trough, after part is fitted into position, uses argon arc spot welding location to keep part fit-up gap and rigging position,
Ensure during soldering that solder is by capillarity moistening region to be welded；
(6) vacuum brazing technique is: brazing temperature is 940 ± 10 degree, is incubated 20-30 minute, is cooled to 840 ± 10 subsequently
Degree 30-40 minute furnace cooling of insulation, in heating process, vacuum is not more than 5 × 10-2Pascal.
Welding method of the present invention uses soldering processes to be a kind of to use material that fusing point is lower than mother metal as solder, Ke Yi
The method fully filling up weld seam with liquid solder in the case of non-fusible mother metal thus realize welding.Soldering is low by fusing fusing point
In the solder of mother metal, welding cost can be reduced, and reduce the influence of thermal deformation of tubing.The streamline section requirement that front fork is special
Making front fork shoulder with front fork tube after shaping, welding position is difficult to fit like a glove, and leaves gap.Soldering is the most abundant
Filling gap between part, this moistening technique effectively reduces problem of stress concentration, is conducive to promoting the intensity of front fork.
Above example is only the exemplary embodiment of the present invention, is not used in the restriction present invention, protection scope of the present invention
It is defined by the claims.The present invention can be made respectively in the essence of the present invention and protection domain by those skilled in the art
Planting amendment or equivalent, this amendment or equivalent also should be regarded as being within the scope of the present invention.
Claims (2)
1. a titanium alloy bicycle front fork method for welding, it is characterised in that comprise the following steps,
S1, titanium alloy front fork shoulder use titanium alloy precise-investment casting method to prepare, and are first made front fork shoulder model by waxed,
Its appearance wraps up in the refractory materials such as several layers of clay, and heating makes wax be melted out, thus obtains the empty formwork formed by refractory material, then
Pour in sky formwork after titanium alloy material is melted, after titanium alloy cools down, refractory material is broken into pieces and obtain titanium alloy front fork shoulder；
S2, titanium alloy front fork tube are prepared by titanium alloy thin wall pipe material, first titanium alloy pipe material pipe are carried out vacuum
Stress-relieving by beat treatment, then bores into suitable diameter titanium alloy pipe, again after vacuum heat and then use hydraulic pressure
The way of molding progressively makes fairshaped titanium alloy front fork tube；
The soldering of S3, front fork pipe fitting and front fork shoulder connects, and comprises the following steps:
When S3.1, design need the part of soldering, at region to be welded preseting solder groove, it is ensured that whole brazing area spread by solder；
S3.2, part is carried out oil removing, cleaning；
S3.3, solder binding agent furnishing paste is placed in solder trough, after part is fitted into position, uses argon arc spot welding location
Keep carrying out soldering under part fit-up gap and rigging position, vacuum, it is ensured that solder treats welding zone by the abundant moistening of capillarity
Territory；
It is incubated after S3.4, vacuum brazing.
Titanium alloy bicycle front fork method for welding the most according to claim 1, it is characterised in that solder uses Ti-
37.5Zr-15Cu-10Ni；Vacuum brazing temperature is 940 ± 10 degree, is incubated 20-30 minute, is cooled to 840 ± 10 degree after completing
Furnace cooling after being incubated 30-40 minute again；During vacuum be not more than 5 × 10-2 Pascal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610835880.3A CN106271460A (en) | 2016-09-20 | 2016-09-20 | A kind of titanium alloy bicycle front fork method for welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610835880.3A CN106271460A (en) | 2016-09-20 | 2016-09-20 | A kind of titanium alloy bicycle front fork method for welding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106271460A true CN106271460A (en) | 2017-01-04 |
Family
ID=57711649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610835880.3A Pending CN106271460A (en) | 2016-09-20 | 2016-09-20 | A kind of titanium alloy bicycle front fork method for welding |
Country Status (1)
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108725669A (en) * | 2018-05-28 | 2018-11-02 | 上海凤凰自行车江苏有限公司 | A kind of bicycle front fork strengthening treatment process |
| CN109202319A (en) * | 2017-07-05 | 2019-01-15 | 马勒国际有限公司 | Method for manufacturing piston |
| CN111299739A (en) * | 2019-12-20 | 2020-06-19 | 楼蓝科技(江苏)有限公司 | Vacuum brazing process suitable for closed cavity multi-weld structure |
| CN114871525A (en) * | 2022-04-18 | 2022-08-09 | 成都四威高科技产业园有限公司 | Pyramid horn antenna furnace brazing process |
| CN115415624A (en) * | 2022-08-23 | 2022-12-02 | 中车青岛四方机车车辆股份有限公司 | Brazing sealing method, spot welding structure and railway vehicle |
| WO2023025873A1 (en) * | 2021-08-26 | 2023-03-02 | Zf Friedrichshafen Ag | Suspension fork for a two-wheeled vehicle |
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| CN201419772Y (en) * | 2009-05-14 | 2010-03-10 | 锺清旗 | Bicycle frame welded structure |
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| CN201419772Y (en) * | 2009-05-14 | 2010-03-10 | 锺清旗 | Bicycle frame welded structure |
| CN103183097A (en) * | 2012-11-30 | 2013-07-03 | 江苏明星减震器有限公司 | Front fork tube of high-strength front shock absorber and manufacturing method of front fork tube |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109202319A (en) * | 2017-07-05 | 2019-01-15 | 马勒国际有限公司 | Method for manufacturing piston |
| CN108725669A (en) * | 2018-05-28 | 2018-11-02 | 上海凤凰自行车江苏有限公司 | A kind of bicycle front fork strengthening treatment process |
| CN108725669B (en) * | 2018-05-28 | 2020-01-03 | 上海凤凰自行车江苏有限公司 | Bicycle front fork strengthening treatment process |
| CN111299739A (en) * | 2019-12-20 | 2020-06-19 | 楼蓝科技(江苏)有限公司 | Vacuum brazing process suitable for closed cavity multi-weld structure |
| WO2023025873A1 (en) * | 2021-08-26 | 2023-03-02 | Zf Friedrichshafen Ag | Suspension fork for a two-wheeled vehicle |
| CN114871525A (en) * | 2022-04-18 | 2022-08-09 | 成都四威高科技产业园有限公司 | Pyramid horn antenna furnace brazing process |
| CN115415624A (en) * | 2022-08-23 | 2022-12-02 | 中车青岛四方机车车辆股份有限公司 | Brazing sealing method, spot welding structure and railway vehicle |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20181120 Address after: 066000 South of Xinkai Street and West of Zhengmingshan Road, Changli Industrial Park, Qinhuangdao City, Hebei Province Applicant after: Hebei sailing Technology Co., Ltd. Address before: 102102 Beijing Badaling Economic Development Zone, Yanqing County, the first floor of No. 10 Building, No. 8 Courtyard, Fenggu No. 4 Road (Zhongguancun Yanqing Garden) Applicant before: Beijing titanium industry and Trade Co., Ltd. |
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Application publication date: 20170104 |
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