CN106216959A - The manufacture method of automobile frame welded still pipe - Google Patents
The manufacture method of automobile frame welded still pipe Download PDFInfo
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- CN106216959A CN106216959A CN201610686423.2A CN201610686423A CN106216959A CN 106216959 A CN106216959 A CN 106216959A CN 201610686423 A CN201610686423 A CN 201610686423A CN 106216959 A CN106216959 A CN 106216959A
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- 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
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- 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
- B23P2700/00—Indexing scheme relating to the articles being treated, e.g. manufactured, repaired, assembled, connected or other operations covered in the subgroups
- B23P2700/50—Other automobile vehicle parts, i.e. manufactured in assembly lines
Abstract
The present invention relates to the manufacture method of automobile frame welded still pipe, it is characterised in that include the steps such as strip steel cutting, pickling processes, cold rolling, roll bending formation and welding, the process of weld seam sublimate, phosphatization, saponification process and cold-drawn process.The automobile frame welded still pipe intensity of manufacture method of the present invention processing is high, good toughness, and weld strength is high, still can keep higher obdurability after bearing bigger plastic deformation.After steel pipe welding, flattening test reaches 90 degree and 0 degree of flat flawless of total head；Flaring test, enlarging rate >=30%, weld seam and mother metal are without cracking；The satisfactory wall thickness deviation of commissure effective thickness.
Description
Technical field
The present invention relates to the manufacture method of a kind of automobile frame welded still pipe, belong to metal material processing technical field.
Background technology
Since reform and opening-up, Chinese Auto Industry development is swift and violent, after entering new century, and either yield and sales volume, more
Being to present explosive growth, after particularly breaking through 18,000,000 to production and marketing in 2010, China has become as the vapour that the whole world is maximum
Car production and consumption state, the automobile market of China is considered as the market that future development is with the largest potentiality.Automobile industry becomes national
Economic important pillar industry, has defined the more complete industrial system of ratio, has also become and embody the significant of national competitiveness
Industry.
Most domestic car enterprise is improving the localization rate of parts and components of auto-parts continuously, is improving the competition of oneself always at present
Power.Although the level of most domestic auto parts and components supplier, the key zero of the high automobiles such as benz, BMW still can not be supplied
Parts and obscure electromotor and the change speed gear box of energy technology, but skill level is greatly improved generally, and one not
Holding the trend ignored is that key parts technical ability and market are the most progressively shifted to China, and meanwhile, Chinese automobile parts are
Start to carry out on a large scale entering into international market, and the merger participating in international automobile fitting industry enthusiastically is integrated.
Now, the production domesticization of auto-parts has begun to start to crucial spare and accessory parts development from common spare and accessory parts, from low
End vehicle starts to develop to high-end vehicle.Most people in the industry's all tendentiousness ground are thought, along with domestic automobile, producer adds one after another
The big production domesticization dynamics of local production, adds that domestic automobile price drops many times, and for keeping profit margin, China of changing the line of production goes forward side by side one
Step improves the shortcut that the localization rate of parts and components clearly can not detour.
Automobile steel pipe is an important component part of auto-parts, along with the development of automobile industry, new skill
Art new technology the most perfect, particularly automobile frame field hydraulic forming Technology gradually ripe, a large amount of plates originally
Material punch welding part is changed to the steel pipe shaped by fluid pressure part used at present.But due to supporting, the high-quality by equipment capability, Technology
The factor restrictions such as raw material resources supply, the production of automobile Precision Welded Pipe the most substantially lags behind manufacturing of auto parts and components
Exhibition, it is difficult to requirement is provided in the production domesticization meeting medium-to-high grade passenger car together.Accordingly, it would be desirable to based on current steady quality, increasing
While adding yield, establish the medium-and long-term strategy being conceived to the production domesticization development of automobile precision tube.
Hydraulic forming technology, owing to dimensional accuracy is high, complex component molding is simple, mechanical property is good, and material consumption is few
Advantage, has had increasing vehicle frame product to use this technology, and the most therefore the application of automobile precision tube is increasingly wider, bag
Include the increasing chassis type such as B post, D post, torsion beam, engine support and use hydraulic processes.For complying with the market demand, I
Develop the automobile frame D post welded tube product of the vehicles such as SUV, MPV together with species abundance in Baosteel in Shanghai, Anhui University of Technology, to substitute
Import, promotes the localization process of Automobile Parts Industry.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art, it is provided that a kind of automobile frame welded still pipe
Manufacture method, uses the vehicle frame welded still pipe intensity height of the method processing, good toughness, and weld strength is high, bigger bearing
Higher obdurability still can be kept after plastic deformation.
The technical scheme provided according to the present invention: the manufacture method of automobile frame welded still pipe, it is characterised in that include
Following steps:
1), strip steel cutting: wide coil of strip slitting on slitter of outsourcing is become strip steel, according to vehicle frame with needed for welded still pipe product
Diameter determine the width of strip steel；
2), pickling processes: by strip steel good for slitting successively continually by descaling bath, cold rinse bank and hot water storgae, in descaling bath
Pickle uses hydrochloric acid, and strip steel is first sent into cold rinse bank after overpickling and used high pressure water washing, is then re-fed into hot water storgae and scalds,
Dry again after going out hot water storgae；
3), cold rolling: the strip steel after pickling carries out cold rolling by milling train, and the thickness of cold rolling rear strip steel produces equal to vehicle frame welded still pipe
Thickness needed for product deducts 0.02 ~ 0.05mm；
4), roll bending formation and welding: the strip steel after cold rolling is sent into and carries out roll bending in continuous pressure roller forming machine and become circle processing, Cheng Yuan
After strip steel on welding machine, be welded into ERW, welding machine parameter is set as: bonding power is 80 ~ 110KW, speed of welding is 15 ~
20m/min, amount of compression is 1.0 ~ 1.5mm；
5), weld seam sublimate processes: uses high pressure nitrogen to rinse welding region in molding welding process, is specially in distance
High pressure nitrogen fumarole is installed at welding region 50cm, makes high pressure nitrogen be full of whole welding region, thus carry for welding process
Supplied gas is protected, and reduces the generation of oxide inclusion in welding process, improves the eliminating efficiency of slag in weld；Meanwhile, at vertical masonry joint
When welded tube not yet cools down, use burring knife milling downhand welding pipe commissure burr, including remove welded tube outer surface outer burr and
Burr within welded tube；
6), phosphatization, saponification process: immersed successively by ERW in phosphating pond and saponification pond, carry out phosphatization, saponification process, phosphorus
ERW after change, saponification is sent in head rolling machine and is carried out dog, makes welded pipe end diameter reach required size；
7) cold-drawn processes: ERW is sent into drawbench and carries out cold-drawn, during cold-drawn, clamp the termination after pinching process, with
Time be inserted into mandrel at welded tube, then make welded tube pass with tapered minimum-value aperture less than the die hole of welded tube external diameter, make welded tube
Inside and outside caliber uniform shrinkage deformation, welded tube length direction is extended, is carried out cold-drawn 1 ~ 3 time according to different technological requirements,
To obtain required size.
As a further improvement on the present invention, the coil of strip material in described step 1) is Ultra-low carbon and deep drawing quality energy
TRIP steel.
As a further improvement on the present invention, described step 2) in, in descaling bath, the concentration of hydrochloric acid is 120 ~ 160g/L；Cold
Flushing temperature in tank is 10 ~ 30 DEG C, and flushing pressure is 8 ~ 10kg/cm2；Temperature of scalding in hot water storgae is 90 ~ 100 DEG C；
Strip steel is 30 ~ 40m/ minute through the speed of descaling bath, cold rinse bank and hot water storgae and the speed of drying, dry temperature be 100 ~
120℃。
As a further improvement on the present invention, the Phosphating Solution in described step 6) be volumetric concentration be the zinc calcium phosphorus of 10 ~ 11%
Changing liquid, the temperature of Phosphating Solution is 65 ~ 75 DEG C, and ERW dip time in Phosphating Solution is 25 ~ 30 minutes.
As a further improvement on the present invention, the saponification liquor composition in described step 6) includes lubricant, water and soap powder, its
In, the mass ratio of lubricant and water is 1:(18 ~ 20), soap powder consumption is 50 ~ 60KG/ ton saponification liquor, and saponification liquor temperature is 65 ~ 75
DEG C, ERW dip time in saponification liquor is 10 ~ 25 minutes.
As a further improvement on the present invention, described manufacture method also includes surface treatment step, and surface treatment step exists
After cold-drawn processes step, the concrete operations of surface treatment step are: rust remover spraying covered on the surface of ERW, so
Blowing the surface of ERW with high temperature compressed air afterwards, while being blown away by rust remover, high temperature compressed air will
The rust remover of ERW surface residual is dried, and forms one layer of rust remover protecting film on the surface of welded tube.
The present invention compared with prior art, has the advantage that the vehicle frame welded still pipe that manufacture method of the present invention is processed
Intensity is high, good toughness, and weld strength is high, still can keep higher obdurability after bearing bigger plastic deformation.
Detailed description of the invention
Below in conjunction with specific embodiment, the invention will be further described.
Embodiment 1
Manufacture the automobile frame welded still pipe of Φ 60 × 1.5mm specification, comprise the steps:
1), strip steel cutting: according to vehicle frame diameter needed for welded still pipe product, by the thickness 1.5mm × width of outsourcing
The strip steel that the coil of strip of 1280mm slitting on slitter becomes width to be 188mm；The material of described strip steel is Ultra-low carbon and high extension
The TRIP steel of performance, its yield strength is 140-240MPa, and tensile strength is >=270MPa, and elongation percentage is >=34%；
2), pickling processes: by strip steel good for slitting successively continually by descaling bath, cold rinse bank and hot water storgae, in descaling bath
Pickle uses hydrochloric acid, and the concentration of hydrochloric acid is 120g/L；Strip steel is first sent into cold rinse bank after overpickling and is used high pressure water washing, cold
Flushing temperature in tank is 10 DEG C, and flushing pressure is 10kg/cm2；Then being re-fed into hot water storgae to scald, scalding temperature is 100
DEG C, dry again after going out hot water storgae, drying temperature is 100 DEG C；Strip steel in hot water storgae is through descaling bath, cold rinse bank and hot water storgae
The speed of speed and drying is 30m/ minute,
3), cold rolling: the strip steel after pickling carries out cold rolling by milling train, and the thickness of cold rolling rear strip steel produces equal to vehicle frame welded still pipe
Thickness needed for product deducts 0.02mm；
4), roll bending formation and welding: the strip steel after cold rolling is sent into and carries out roll bending in continuous pressure roller forming machine and become circle processing, Cheng Yuan
After strip steel on welding machine, be welded into ERW, welding machine parameter is set as: bonding power is 80KW, and speed of welding is 15m/min,
Amount of compression is 1.0mm；
5), weld seam sublimate processes: uses high pressure nitrogen to rinse welding region in molding welding process, is specially in distance
High pressure nitrogen fumarole is installed at welding region 50cm, makes high pressure nitrogen be full of whole welding region, thus carry for welding process
Supplied gas is protected, and reduces the generation of oxide inclusion in welding process, improves the eliminating efficiency of slag in weld；Meanwhile, at vertical masonry joint
When welded tube not yet cools down, use burring knife milling downhand welding pipe commissure burr, including remove welded tube outer surface outer burr and
Burr within welded tube；
6), phosphatization, saponification process: immersed successively by ERW in phosphating pond and saponification pond, carry out phosphatization, saponification process；Phosphorus
Change the Phosphating Solution in pond be volumetric concentration be the zinc calcium phosphorization liquid of 10%, the temperature of Phosphating Solution is 75 DEG C, and ERW is at Phosphating Solution
In dip time be 25 minutes；Saponification liquor composition in saponification pond includes lubricant, water and soap powder, wherein, lubricant and water
Mass ratio be 1:18, soap powder consumption is 50KG/ ton saponification liquor, and saponification liquor temperature is 75 DEG C, and ERW is in saponification liquor
Dip time is 10 minutes；ERW after phosphatization, saponification is sent in head rolling machine and is carried out dog, makes welded pipe end diameter reach
Required size；
7) cold-drawn processes: ERW is sent into drawbench and carries out cold-drawn, during cold-drawn, clamp the termination after pinching process, with
Time be inserted into mandrel at welded tube, then make welded tube pass with tapered minimum-value aperture less than the die hole of welded tube external diameter, make welded tube
Inside and outside caliber uniform shrinkage deformation, welded tube length direction is extended, is carried out cold-drawn 2 times according to technological requirement, to obtain
The size needed；
8), surface processes: cover on the surface of ERW, rust remover spraying then with high temperature compressed air to ERW
Surface blow, while being blown away by rust remover, the rust remover of ERW surface residual is dried by high temperature compressed air
Dry, one layer of rust remover protecting film is formed on the surface of welded tube.
9), verification test: after the steel pipe welding of embodiment 1 preparation, flattening test reaches 90 degree and 0 degree of flat flawless of total head；Expand
Oral examination is tested, enlarging rate >=30%, and weld seam and mother metal are without cracking；The satisfactory wall thickness deviation of commissure effective thickness.
Embodiment 2
Manufacture the automobile frame welded still pipe of Φ 60 × 1.5mm specification, comprise the steps:
1), strip steel cutting: according to vehicle frame diameter needed for welded still pipe product, by the thickness 1.5mm × width of outsourcing
The strip steel that the coil of strip of 1280mm slitting on slitter becomes width to be 188mm；The material of described strip steel is Ultra-low carbon and high extension
The TRIP steel of performance, its yield strength is 140-240MPa, and tensile strength is >=270MPa, and elongation percentage is >=34%；
2), pickling processes: by strip steel good for slitting successively continually by descaling bath, cold rinse bank and hot water storgae, in descaling bath
Pickle uses hydrochloric acid, and the concentration of hydrochloric acid is 140g/L；Strip steel is first sent into cold rinse bank after overpickling and is used high pressure water washing, cold
Flushing temperature in tank is 20 DEG C, and flushing pressure is 9kg/cm2；Then being re-fed into hot water storgae to scald, scalding temperature is 95 DEG C,
Drying after going out hot water storgae, drying temperature is 110 DEG C again；Strip steel in hot water storgae is through the car of descaling bath, cold rinse bank and hot water storgae
Speed and the speed dried are 35m/ minute,
3), cold rolling: the strip steel after pickling carries out cold rolling by milling train, and the thickness of cold rolling rear strip steel produces equal to vehicle frame welded still pipe
Thickness needed for product deducts 0.03mm；
4), roll bending formation and welding: the strip steel after cold rolling is sent into and carries out roll bending in continuous pressure roller forming machine and become circle processing, Cheng Yuan
After strip steel on welding machine, be welded into ERW, welding machine parameter is set as: bonding power is 95KW, and speed of welding is 18m/min,
Amount of compression is 1.2mm；
5), weld seam sublimate processes: uses high pressure nitrogen to rinse welding region in molding welding process, is specially in distance
High pressure nitrogen fumarole is installed at welding region 50cm, makes high pressure nitrogen be full of whole welding region, thus carry for welding process
Supplied gas is protected, and reduces the generation of oxide inclusion in welding process, improves the eliminating efficiency of slag in weld；Meanwhile, at vertical masonry joint
When welded tube not yet cools down, use burring knife milling downhand welding pipe commissure burr, including remove welded tube outer surface outer burr and
Burr within welded tube；
6), phosphatization, saponification process: immersed successively by ERW in phosphating pond and saponification pond, carry out phosphatization, saponification process；Phosphorus
Change the Phosphating Solution in pond be volumetric concentration be the zinc calcium phosphorization liquid of 11%, the temperature of Phosphating Solution is 70 DEG C, and ERW is at Phosphating Solution
In dip time be 28 minutes；Saponification liquor composition in saponification pond includes lubricant, water and soap powder, wherein, lubricant and water
Mass ratio be 1:19, soap powder consumption is 55KG/ ton saponification liquor, and saponification liquor temperature is 70 DEG C, and ERW is in saponification liquor
Dip time is 20 minutes；ERW after phosphatization, saponification is sent in head rolling machine and is carried out dog, makes welded pipe end diameter reach
Required size；
7) cold-drawn processes: ERW is sent into drawbench and carries out cold-drawn, during cold-drawn, clamp the termination after pinching process, with
Time be inserted into mandrel at welded tube, then make welded tube pass with tapered minimum-value aperture less than the die hole of welded tube external diameter, make welded tube
Inside and outside caliber uniform shrinkage deformation, welded tube length direction is extended, is carried out cold-drawn 2 times according to technological requirement, to obtain
The size needed；
8), surface processes: cover on the surface of ERW, rust remover spraying then with high temperature compressed air to ERW
Surface blow, while being blown away by rust remover, the rust remover of ERW surface residual is dried by high temperature compressed air
Dry, one layer of rust remover protecting film is formed on the surface of welded tube.
9), verification test: after the steel pipe welding of embodiment 2 preparation, flattening test reaches 90 degree and 0 degree of flat flawless of total head；Expand
Oral examination is tested, enlarging rate >=30%, and weld seam and mother metal are without cracking；The satisfactory wall thickness deviation of commissure effective thickness.
Embodiment 3
Manufacture the automobile frame welded still pipe of Φ 60 × 1.5mm specification, comprise the steps:
1), strip steel cutting: according to vehicle frame diameter needed for welded still pipe product, by the thickness 1.5mm × width of outsourcing
The strip steel that the coil of strip of 1280mm slitting on slitter becomes width to be 188mm；The material of described strip steel is Ultra-low carbon and high extension
The TRIP steel of performance, its yield strength is 140-240MPa, and tensile strength is >=270MPa, and elongation percentage is >=34%；
2), pickling processes: by strip steel good for slitting successively continually by descaling bath, cold rinse bank and hot water storgae, in descaling bath
Pickle uses hydrochloric acid, and the concentration of hydrochloric acid is 160g/L；Strip steel is first sent into cold rinse bank after overpickling and is used high pressure water washing, cold
Flushing temperature in tank is 30 DEG C, and flushing pressure is 8kg/cm2；Then being re-fed into hot water storgae to scald, scalding temperature is 90 DEG C,
Drying after going out hot water storgae, drying temperature is 120 DEG C again；Strip steel in hot water storgae is through the car of descaling bath, cold rinse bank and hot water storgae
Speed and the speed dried are 40m/ minute,
3), cold rolling: the strip steel after pickling carries out cold rolling by milling train, and the thickness of cold rolling rear strip steel produces equal to vehicle frame welded still pipe
Thickness needed for product deducts 0.05mm；
4), roll bending formation and welding: the strip steel after cold rolling is sent into and carries out roll bending in continuous pressure roller forming machine and become circle processing, Cheng Yuan
After strip steel on welding machine, be welded into ERW, welding machine parameter is set as: bonding power is 110KW, and speed of welding is 20m/
Min, amount of compression is 1.5mm；
5), weld seam sublimate processes: uses high pressure nitrogen to rinse welding region in molding welding process, is specially in distance
High pressure nitrogen fumarole is installed at welding region 50cm, makes high pressure nitrogen be full of whole welding region, thus carry for welding process
Supplied gas is protected, and reduces the generation of oxide inclusion in welding process, improves the eliminating efficiency of slag in weld；Meanwhile, at vertical masonry joint
When welded tube not yet cools down, use burring knife milling downhand welding pipe commissure burr, including remove welded tube outer surface outer burr and
Burr within welded tube；
6), phosphatization, saponification process: immersed successively by ERW in phosphating pond and saponification pond, carry out phosphatization, saponification process；Phosphorus
Change the Phosphating Solution in pond be volumetric concentration be the zinc calcium phosphorization liquid of 11%, the temperature of Phosphating Solution is 65 DEG C, and ERW is at Phosphating Solution
In dip time be 30 minutes；Saponification liquor composition in saponification pond includes lubricant, water and soap powder, wherein, lubricant and water
Mass ratio be 1:20, soap powder consumption is 60KG/ ton saponification liquor, and saponification liquor temperature is 65 DEG C, and ERW is in saponification liquor
Dip time is 25 minutes；ERW after phosphatization, saponification is sent in head rolling machine and is carried out dog, makes welded pipe end diameter reach
Required size；
7) cold-drawn processes: ERW is sent into drawbench and carries out cold-drawn, during cold-drawn, clamp the termination after pinching process, with
Time be inserted into mandrel at welded tube, then make welded tube pass with tapered minimum-value aperture less than the die hole of welded tube external diameter, make welded tube
Inside and outside caliber uniform shrinkage deformation, welded tube length direction is extended, is carried out cold-drawn 2 times according to technological requirement, to obtain
The size needed；
8), surface processes: cover on the surface of ERW, rust remover spraying then with high temperature compressed air to ERW
Surface blow, while being blown away by rust remover, the rust remover of ERW surface residual is dried by high temperature compressed air
Dry, one layer of rust remover protecting film is formed on the surface of welded tube.
9), verification test: after the steel pipe welding of embodiment 3 preparation, flattening test reaches 90 degree and 0 degree of flat flawless of total head；Expand
Oral examination is tested, enlarging rate >=30%, and weld seam and mother metal are without cracking；The satisfactory wall thickness deviation of commissure effective thickness.
Zinc calcium phosphorization liquid used in the present invention can use the Zinc-calcium series phosphatating liquid of commercially available routine, in the various embodiments described above
Employed in for Jiangyin Jin Hong chemical treatment company limited produce zinc calcium phosphorization liquid.
Lubricant used in saponification liquor of the present invention can use the lubricant of commercially available routine, in the various embodiments described above
The lubricant produced for Shanghai chemical industry seven factory used.
Claims (6)
1. the manufacture method of automobile frame welded still pipe, it is characterised in that comprise the steps:
1), strip steel cutting: wide coil of strip slitting on slitter of outsourcing is become strip steel, according to vehicle frame with needed for welded still pipe product
Diameter determine the width of strip steel；
2), pickling processes: by strip steel good for slitting successively continually by descaling bath, cold rinse bank and hot water storgae, in descaling bath
Pickle uses hydrochloric acid, and strip steel is first sent into cold rinse bank after overpickling and used high pressure water washing, is then re-fed into hot water storgae and scalds,
Dry again after going out hot water storgae；
3), cold rolling: the strip steel after pickling carries out cold rolling by milling train, and the thickness of cold rolling rear strip steel produces equal to vehicle frame welded still pipe
Thickness needed for product deducts 0.02 ~ 0.05mm；
4), roll bending formation and welding: the strip steel after cold rolling is sent into and carries out roll bending in continuous pressure roller forming machine and become circle processing, Cheng Yuan
After strip steel on welding machine, be welded into ERW, welding machine parameter is set as: bonding power is 80 ~ 110KW, speed of welding is 15 ~
20m/min, amount of compression is 1.0 ~ 1.5mm；
5), weld seam sublimate processes: uses high pressure nitrogen to rinse welding region in molding welding process, is specially in distance
High pressure nitrogen fumarole is installed at welding region 50cm, makes high pressure nitrogen be full of whole welding region, thus carry for welding process
Supplied gas is protected, and reduces the generation of oxide inclusion in welding process, improves the eliminating efficiency of slag in weld；Meanwhile, at vertical masonry joint
When welded tube not yet cools down, use burring knife milling downhand welding pipe commissure burr, including remove welded tube outer surface outer burr and
Burr within welded tube；
6), phosphatization, saponification process: immersed successively by ERW in phosphating pond and saponification pond, carry out phosphatization, saponification process, phosphorus
ERW after change, saponification is sent in head rolling machine and is carried out dog, makes welded pipe end diameter reach required size；
7) cold-drawn processes: ERW is sent into drawbench and carries out cold-drawn, during cold-drawn, clamp the termination after pinching process, with
Time be inserted into mandrel at welded tube, then make welded tube pass with tapered minimum-value aperture less than the die hole of welded tube external diameter, make welded tube
Inside and outside caliber uniform shrinkage deformation, welded tube length direction is extended, is carried out cold-drawn 1 ~ 3 time according to different technological requirements,
To obtain required size.
2. the manufacture method of automobile frame welded still pipe as claimed in claim 1, it is characterised in that: in described step 1)
Coil of strip material is Ultra-low carbon and the TRIP steel of deep drawing quality energy.
3. the manufacture method of automobile frame welded still pipe as claimed in claim 1, it is characterised in that: described step 2) in,
In descaling bath, the concentration of hydrochloric acid is 120 ~ 160g/L；Flushing temperature in cold rinse bank is 10 ~ 30 DEG C, and flushing pressure is 8 ~ 10kg/
cm2；Temperature of scalding in hot water storgae is 90 ~ 100 DEG C；Strip steel is through the speed of descaling bath, cold rinse bank and hot water storgae and drying
Speed is 30 ~ 40m/ minute, and drying temperature is 100 ~ 120 DEG C.
4. the manufacture method of automobile frame welded still pipe as claimed in claim 1, it is characterised in that: in described step 6)
Phosphating Solution be volumetric concentration be the zinc calcium phosphorization liquid of 10 ~ 11%, the temperature of Phosphating Solution is 65 ~ 75 DEG C, and ERW is in Phosphating Solution
Dip time be 25 ~ 30 minutes.
5. the manufacture method of automobile frame welded still pipe as claimed in claim 1, it is characterised in that: in described step 6)
Saponification liquor composition includes lubricant, water and soap powder, and wherein, the mass ratio of lubricant and water is 1:(18 ~ 20), soap powder consumption is 50
~ 60KG/ ton saponification liquor, saponification liquor temperature is 65 ~ 75 DEG C, and ERW dip time in saponification liquor is 10 ~ 25 minutes.
6. the manufacture method of automobile frame welded still pipe as claimed in claim 1, it is characterised in that: described manufacture method is also
Including surface treatment step, surface treatment step is after cold-drawn processes step, and the concrete operations of surface treatment step are: will remove
Rust agent spraying covers on the surface of ERW, then blows the surface of ERW with high temperature compressed air, is inciting somebody to action
While rust remover is blown away, the rust remover of ERW surface residual is dried by high temperature compressed air, is formed on the surface of welded tube
One layer of rust remover protecting film.
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| CN201610686423.2A CN106216959B (en) | 2016-08-18 | 2016-08-18 | The manufacture method of automobile frame welded still pipe |
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| CN201610686423.2A CN106216959B (en) | 2016-08-18 | 2016-08-18 | The manufacture method of automobile frame welded still pipe |
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| CN106216959B CN106216959B (en) | 2018-03-30 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109483178A (en) * | 2018-12-29 | 2019-03-19 | 无锡苏嘉法斯特汽车零配件有限公司 | A kind of welding method of zinc-plated high-strength vehicle frame welded tube |
| CN110076568A (en) * | 2019-05-31 | 2019-08-02 | 张家港华程机车精密制管有限公司 | A kind of process units of the welded still pipe for crawler crane string abdomen arm |
| CN111001994A (en) * | 2019-12-28 | 2020-04-14 | 浙江华美欧汽车零部件制造有限公司 | Integrated forming process of steel pipe fitting bracket for automobile |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87104077A (en) * | 1987-06-03 | 1988-12-14 | 李振明 | Cold-drawing technology of high-frequency welded thin-wall steel pipe |
| EP1001856A1 (en) * | 1997-08-06 | 2000-05-24 | SMS Demag AG | METHOD FOR PRODUCING WELDED Cu AND Cu ALLOY PIPES |
| CN101130197A (en) * | 2006-09-26 | 2008-02-27 | 李永立 | Cold drawing, cold rolling production method for high-accuracy weldless steel tube |
| CN102764958A (en) * | 2012-07-13 | 2012-11-07 | 江苏中友精密制管有限公司 | Process for manufacturing cold-rolled/cold-drawn precise welded steel pipe |
| CN103591118A (en) * | 2013-11-19 | 2014-02-19 | 无锡苏嘉法斯特汽车零配件有限公司 | Manufacturing technology of transmission shaft tube |
| CN103894798A (en) * | 2014-03-31 | 2014-07-02 | 张家港保税区亚信汽车零部件科技有限公司 | Manufacturing method of precisely-welded pipe |
-
2016
- 2016-08-18 CN CN201610686423.2A patent/CN106216959B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87104077A (en) * | 1987-06-03 | 1988-12-14 | 李振明 | Cold-drawing technology of high-frequency welded thin-wall steel pipe |
| EP1001856A1 (en) * | 1997-08-06 | 2000-05-24 | SMS Demag AG | METHOD FOR PRODUCING WELDED Cu AND Cu ALLOY PIPES |
| CN101130197A (en) * | 2006-09-26 | 2008-02-27 | 李永立 | Cold drawing, cold rolling production method for high-accuracy weldless steel tube |
| CN102764958A (en) * | 2012-07-13 | 2012-11-07 | 江苏中友精密制管有限公司 | Process for manufacturing cold-rolled/cold-drawn precise welded steel pipe |
| CN103591118A (en) * | 2013-11-19 | 2014-02-19 | 无锡苏嘉法斯特汽车零配件有限公司 | Manufacturing technology of transmission shaft tube |
| CN103894798A (en) * | 2014-03-31 | 2014-07-02 | 张家港保税区亚信汽车零部件科技有限公司 | Manufacturing method of precisely-welded pipe |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109483178A (en) * | 2018-12-29 | 2019-03-19 | 无锡苏嘉法斯特汽车零配件有限公司 | A kind of welding method of zinc-plated high-strength vehicle frame welded tube |
| CN110076568A (en) * | 2019-05-31 | 2019-08-02 | 张家港华程机车精密制管有限公司 | A kind of process units of the welded still pipe for crawler crane string abdomen arm |
| CN111001994A (en) * | 2019-12-28 | 2020-04-14 | 浙江华美欧汽车零部件制造有限公司 | Integrated forming process of steel pipe fitting bracket for automobile |
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