CN106216957A - The manufacture method of torsion beam of automobile welded still pipe - Google Patents
The manufacture method of torsion beam of automobile welded still pipe Download PDFInfo
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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
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Abstract
The present invention relates to the manufacture method of a kind of torsion beam of automobile welded still pipe, it includes 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, cold-drawn process and Quenching Treatment.The torsion beam 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, and postwelding flattening test reaches 90 degree and 0 degree of total head flat fusion line flawless；Flaring test, enlarging rate >=17%, body (including weld seam) does not ftractures；Uniform wall thickness after product subsequent thermal molding, punching press, stable mechanical property, intensity reaches 1500Mpa.
Description
Technical field
The present invention relates to the manufacture method of a kind of torsion beam of automobile welded still pipe, belong to metal material processing technology neck
Territory.
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.
But along with developing rapidly of automobile industry, a series of problem brought the most progressively manifests, global warming day
Acute increasingly, haze weather is more aobvious serious, and international crude petroleum disparities between supply and demand are progressively deepened, so countries in the world are in the development of auto industry
On also from the development of simple amount then more focus on the lifting of matter, more than 140 country participates in having signed " capital of a country memorandum of agreement ".And I
State the longest one period automobile demand amount will keep growth, the energy shortage and the environmental pollution that thus bring are asked
Topic will be more prominent.
In this context, accelerate cultivate and develop energy-conservation (lightweight) automobile and new-energy automobile, be effectively to alleviate energy
Source and ambient pressure, promote the urgent task of automobile industry sustainable development, is also to speed up automobile industry transition and upgrade, cultivates newly
Point of economic increase and the strategic measure of international competitive advantage.Therefore, lightweight becomes scheme the most of greatest concern, and automobile is light
Quantify to have become as the trend of world car development.Automobile fuel saving, reduction are discharged, are improved performance, automobile product by automotive light weight technology
Industry develops in a healthy way the most significant, is the direction of modern automobile industry technology development.Authority's research display, if vehicle complete vehicle
Weight reduction 10%, fuel efficiency can improve 6% ~ 8%, discharges fall 4%；Automobile kerb weight often reduces 100 kilograms, fuel consumption per hundred kilometers
Can reduce by 0.3 ~ 0.6 liter, CO2 emission can reduce by about 5 grams/kilometer；Vehicle weight reduces by 1%, and oil consumption can reduce by 0.7%.
And torsion beam of automobile suspension is as most widely used automobile suspension system, its technological improvement and lightweight process
Also strong influence the development of automobile industry.Along with the continuous progress of torsion beam of automobile moulding process, technology mode is from initially
Sheet material cold stamping, develop to tubing cold stamping, tubing drop stamping and Tube Hydroforming direction, new molding mode makes torsion
More preferably, dimensional accuracy is higher, and service life is longer, and weight is lighter for beam product product rigidity than ever, flexibility.
And new moulding process depends on high-quality, high performance welded tube product.Owing to the technology of domestic automobile steel pipe is entered
Step is limited by the research and development of raw material, and whole adopting supplies chain longer, it is impossible to directly facing car load manufacturer, so at whole automobile
An always weak link in industry supply chain, thus so far the steel pipe of automobile high-quality high added value mostly still rely on into
Mouthful.
To this end, our company combines the research of colleges and universities, experiment and talent advantage, the industrialization advantage of Su Jia group and upper Hypon
The research and development strength of steel group, the manufacture of research and development torsion beam of automobile welded still pipe, the research and development of this product successfully will promotion automobile zero
The process of domestic part, fills up the domestic blank in this field.
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 torsion beam of automobile welded still pipe
Manufacture method, the torsion beam welded still pipe intensity using the method processing is high, good toughness, and weld strength is high, is bearing relatively
Higher obdurability still can be kept after big plastic deformation.
The technical scheme provided according to the present invention: the manufacture method of torsion beam of automobile welded still pipe, it is characterised in that bag
Include following steps:
1), strip steel cutting: wide coil of strip slitting on slitter of outsourcing is become strip steel, according to torsion beam welded still pipe product institute
The diameter needed determines 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 is equal to torsion beam welded still pipe
Thickness needed for product deducts 0.05 ~ 0.15mm；
4), roll bending formation and welding: the strip steel after cold rolling is sent into and uses W brake forming method to be made circle processing in forming machine, become
Strip steel after circle is welded into ERW on welding machine, and welding machine parameter is set as: bonding power is 190 ~ 220KW, and speed of welding is
18 ~ 22m/min, amount of compression is 1.5 ~ 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
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；
8), Quenching Treatment: cold-drawn process after ERW send into glowing furnace, be heated to 820 ~ 840 DEG C, be incubated 30 ~ 50min,
Then cool down by the way of oil is cold, then ERW is sent into tempering furnace, be heated to 480 ~ 500 DEG C, finally by water-cooled
Welded tube is cooled down by mode.
As a further improvement on the present invention, the coil of strip material in described step 1) is BR1500HS.
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 Quenching Treatment step, the concrete operations of surface treatment step are: first use high temperature compressed air to enter ERW surface
Row is blown, and removes cooling water, then covers rust remover spraying on the surface of ERW, finally the most right with high temperature compressed air
Blowing in the surface of ERW, while being blown away by rust remover, high temperature compressed air is by ERW surface residual
Rust remover 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 torsion beam welding steel that manufacture method of the present invention is processed
Pipe 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 torsion beam of automobile welded still pipe of Φ 103 × 3.5mm specification, comprise the steps:
1), strip steel cutting: according to torsion beam diameter needed for welded still pipe product, by the thickness 5mm × width of outsourcing
The strip steel that the coil of strip of 1280mm slitting on slitter becomes width to be 322mm；The material of described strip steel is BR1500HS；
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 is equal to torsion beam 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 uses W brake forming method to be made circle processing in forming machine, become
Strip steel after circle is welded into ERW on welding machine, and welding machine parameter is set as: bonding power is 190KW, and speed of welding is 18m/
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 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), Quenching Treatment: the ERW after cold-drawn processes sends into glowing furnace, is heated to 820 DEG C, is incubated 50min, then passes through
The cold mode of oil cools down, then ERW is sent into tempering furnace, is heated to 480 DEG C, and the mode finally by water-cooled is cold by welded tube
But；
9), surface processes: first using high temperature compressed air to blow ERW surface, removal cools down water, then will rust cleaning
Agent spraying covers on the surface of ERW, finally again blows the surface of ERW with high temperature compressed air,
While being blown away by rust remover, the rust remover of ERW surface residual is dried by high temperature compressed air, in the surface shape of welded tube
Become one layer of rust remover protecting film；
10), verification test: after the steel pipe welding of embodiment 1 preparation, flattening test reaches 90 degree and 0 degree of flat fusion line of total head without splitting
Stricture of vagina；Flaring test, enlarging rate >=17%, body (including weld seam) does not ftractures；Uniform wall thickness after product subsequent thermal molding, punching press, power
Learning stable performance, intensity reaches 1500Mpa.
Embodiment 2
Manufacture the torsion beam of automobile welded still pipe of Φ 103 × 3.5mm specification, comprise the steps:
1), strip steel cutting: according to torsion beam diameter needed for welded still pipe product, by the thickness 5mm × width of outsourcing
The strip steel that the coil of strip of 1280mm slitting on slitter becomes width to be 322mm；The material of described strip steel is BR1500HS；
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 is equal to torsion beam welded still pipe
Thickness needed for product deducts 0.10mm；
4), roll bending formation and welding: the strip steel after cold rolling is sent into and uses W brake forming method to be made circle processing in forming machine, become
Strip steel after circle is welded into ERW on welding machine, and welding machine parameter is set as: bonding power is 205KW, and speed of welding is 20m/
Min, amount of compression is 1.8mm；
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), Quenching Treatment: the ERW after cold-drawn processes sends into glowing furnace, is heated to 830 DEG C, is incubated 40min, then passes through
The cold mode of oil cools down, then ERW is sent into tempering furnace, is heated to 490 DEG C, and the mode finally by water-cooled is cold by welded tube
But；
9), surface processes: first using high temperature compressed air to blow ERW surface, removal cools down water, then will rust cleaning
Agent spraying covers on the surface of ERW, finally again blows the surface of ERW with high temperature compressed air,
While being blown away by rust remover, the rust remover of ERW surface residual is dried by high temperature compressed air, in the surface shape of welded tube
Become one layer of rust remover protecting film；
10), verification test: after the steel pipe welding of embodiment 2 preparation, flattening test reaches 90 degree and 0 degree of flat fusion line of total head without splitting
Stricture of vagina；Flaring test, enlarging rate >=17%, body (including weld seam) does not ftractures；Uniform wall thickness after product subsequent thermal molding, punching press, power
Learning stable performance, intensity reaches 1500Mpa.
Embodiment 3
Manufacture the torsion beam of automobile welded still pipe of Φ 103 × 3.5mm specification, comprise the steps:
1), strip steel cutting: according to torsion beam diameter needed for welded still pipe product, by the thickness 5mm × width of outsourcing
The strip steel that the coil of strip of 1280mm slitting on slitter becomes width to be 322mm；The material of described strip steel is BR1500HS；
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 is equal to torsion beam welded still pipe
Thickness needed for product deducts 0.15mm；
4), roll bending formation and welding: the strip steel after cold rolling is sent into and uses W brake forming method to be made circle processing in forming machine, become
Strip steel after circle is welded into ERW on welding machine, and welding machine parameter is set as: bonding power is 220KW, and speed of welding is 22m/
Min, amount of compression is 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 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), Quenching Treatment: the ERW after cold-drawn processes sends into glowing furnace, is heated to 840 DEG C, is incubated 30min, then passes through
The cold mode of oil cools down, then ERW is sent into tempering furnace, is heated to 500 DEG C, and the mode finally by water-cooled is cold by welded tube
But；
9), surface processes: first using high temperature compressed air to blow ERW surface, removal cools down water, then will rust cleaning
Agent spraying covers on the surface of ERW, finally again blows the surface of ERW with high temperature compressed air,
While being blown away by rust remover, the rust remover of ERW surface residual is dried by high temperature compressed air, in the surface shape of welded tube
Become one layer of rust remover protecting film；
10), verification test: after the steel pipe welding of embodiment 3 preparation, flattening test reaches 90 degree and 0 degree of flat fusion line of total head without splitting
Stricture of vagina；Flaring test, enlarging rate >=17%, body (including weld seam) does not ftractures；Uniform wall thickness after product subsequent thermal molding, punching press, power
Learning stable performance, intensity reaches 1500Mpa.
Coil of strip used in the present invention can use the coil of strip that material is BR1500HS of commercially available routine, in above-mentioned each enforcement
The coil of strip produced for Baoshan Iron and Steel Group employed in example
Zinc calcium phosphorization liquid used in the present invention can use the Zinc-calcium series phosphatating liquid of commercially available routine, institute in the various embodiments described above
The zinc calcium phosphorization liquid produced for Jiangyin Jin Hong chemical treatment company limited used.
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 torsion beam of automobile 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 torsion beam welded still pipe product institute
The diameter needed determines 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 is equal to torsion beam welded still pipe
Thickness needed for product deducts 0.05 ~ 0.15mm；
4), roll bending formation and welding: the strip steel after cold rolling is sent into and uses W brake forming method to be made circle processing in forming machine, become
Strip steel after circle is welded into ERW on welding machine, and welding machine parameter is set as: bonding power is 190 ~ 220KW, and speed of welding is
18 ~ 22m/min, amount of compression is 1.5 ~ 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
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；
8), Quenching Treatment: cold-drawn process after ERW send into glowing furnace, be heated to 820 ~ 840 DEG C, be incubated 30 ~ 50min,
Then cool down by the way of oil is cold, then ERW is sent into tempering furnace, be heated to 480 ~ 500 DEG C, finally by water-cooled
Welded tube is cooled down by mode.
2. the manufacture method of torsion beam of automobile welded still pipe as claimed in claim 1, it is characterised in that: in described step 1)
Coil of strip material be BR1500HS.
3. the manufacture method of torsion beam of automobile 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, 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 baking
Dry speed is 30 ~ 40m/ minute, and drying temperature is 100 ~ 120 DEG C.
4. the manufacture method of torsion beam of automobile 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 at Phosphating Solution
In dip time be 25 ~ 30 minutes.
5. the manufacture method of torsion beam of automobile welded still pipe as claimed in claim 1, it is characterised in that: in described step 6)
Saponification liquor composition include lubricant, water and soap powder, 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 torsion beam of automobile welded still pipe as claimed in claim 1, it is characterised in that: described manufacture method
Also including surface treatment step, surface treatment step is after Quenching Treatment step, and the concrete operations of surface treatment step are: first
Use high temperature compressed air to be blown in ERW surface, remove cooling water, then rust remover spraying is covered in straight weld
The surface of pipe, finally blows to the surface of ERW again with high temperature compressed air, while rust remover is blown away,
The rust remover of ERW surface residual is dried by high temperature compressed air, forms one layer of rust remover protecting film on the surface of welded tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610684761.2A CN106216957B (en) | 2016-08-18 | 2016-08-18 | The manufacture method of torsion beam of automobile welded still pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610684761.2A CN106216957B (en) | 2016-08-18 | 2016-08-18 | The manufacture method of torsion beam of automobile welded still pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106216957A true CN106216957A (en) | 2016-12-14 |
| CN106216957B CN106216957B (en) | 2018-01-05 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107419065A (en) * | 2017-07-24 | 2017-12-01 | 天人汽车底盘（芜湖）股份有限公司 | The closed torsion beam integral quenching technique of car |
| CN108034802A (en) * | 2018-01-11 | 2018-05-15 | 江苏神猴钢绳开发有限公司 | The heat treatment method and its production equipment of a kind of steel wire |
| CN108339863A (en) * | 2018-02-06 | 2018-07-31 | 陈建平 | A kind of method of cold-drawn air-conditioner compressor outer housing |
| CN109366111A (en) * | 2018-12-29 | 2019-02-22 | 无锡苏嘉法斯特汽车零配件有限公司 | A kind of manufacturing method of CP800 torsion beam welded tube |
| CN110170803A (en) * | 2019-06-14 | 2019-08-27 | 泰州市长征冷机管件有限公司 | A kind of welding procedure for interior exhaust coil pack |
| CN110757098A (en) * | 2019-09-20 | 2020-02-07 | 滁州市友邦涂装有限公司 | Production process of U-shaped pipe clamp with good wear resistance |
| CN111050941A (en) * | 2017-10-04 | 2020-04-21 | 日本制铁株式会社 | Torsion beam manufacturing method and torsion beam manufacturing device |
| CN117415225A (en) * | 2023-12-19 | 2024-01-19 | 淄博吉利新能源商用车发展有限公司 | Spare part equipment of bending for cargo vehicle |
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 CN201610684761.2A patent/CN106216957B/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 (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107419065A (en) * | 2017-07-24 | 2017-12-01 | 天人汽车底盘（芜湖）股份有限公司 | The closed torsion beam integral quenching technique of car |
| CN111050941A (en) * | 2017-10-04 | 2020-04-21 | 日本制铁株式会社 | Torsion beam manufacturing method and torsion beam manufacturing device |
| CN111050941B (en) * | 2017-10-04 | 2022-04-01 | 日本制铁株式会社 | Torsion beam manufacturing method and torsion beam manufacturing device |
| CN108034802A (en) * | 2018-01-11 | 2018-05-15 | 江苏神猴钢绳开发有限公司 | The heat treatment method and its production equipment of a kind of steel wire |
| CN108339863A (en) * | 2018-02-06 | 2018-07-31 | 陈建平 | A kind of method of cold-drawn air-conditioner compressor outer housing |
| CN109366111A (en) * | 2018-12-29 | 2019-02-22 | 无锡苏嘉法斯特汽车零配件有限公司 | A kind of manufacturing method of CP800 torsion beam welded tube |
| CN110170803A (en) * | 2019-06-14 | 2019-08-27 | 泰州市长征冷机管件有限公司 | A kind of welding procedure for interior exhaust coil pack |
| CN110757098A (en) * | 2019-09-20 | 2020-02-07 | 滁州市友邦涂装有限公司 | Production process of U-shaped pipe clamp with good wear resistance |
| CN117415225A (en) * | 2023-12-19 | 2024-01-19 | 淄博吉利新能源商用车发展有限公司 | Spare part equipment of bending for cargo vehicle |
| CN117415225B (en) * | 2023-12-19 | 2024-02-13 | 淄博吉利新能源商用车发展有限公司 | Spare part equipment of bending for cargo vehicle |
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