CN106191649B - A kind of air bag system low-alloy high-strength welded still pipe and its manufacture method - Google Patents
A kind of air bag system low-alloy high-strength welded still pipe and its manufacture method Download PDFInfo
- Publication number
- CN106191649B CN106191649B CN201610594666.3A CN201610594666A CN106191649B CN 106191649 B CN106191649 B CN 106191649B CN 201610594666 A CN201610594666 A CN 201610594666A CN 106191649 B CN106191649 B CN 106191649B
- Authority
- CN
- China
- Prior art keywords
- steel pipe
- less
- steel
- air bag
- steel band
- 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.)
- Expired - Fee Related
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- 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
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
- B23K31/027—Making tubes with soldering or welding
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/32—Ferrous alloys, e.g. steel alloys containing chromium with boron
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention discloses a kind of air bag system low-alloy high-strength welded still pipe, including the steel pipe body that external diameter is 20mm, wall thickness is 1.2mm and length is 150mm, the steel composition in the steel pipe body is to contain C according to quality %：Less than 0.12%, Mn：1.60~2.40%, Si：Less than 0.5%, P：Less than 0.03%, S：Less than 0.03%, remaining is Fe.Tensile strength of the present invention with more than 1000MPa, high ductibility, at a temperature of extreme climate, have preferable stability.
Description
Technical field
The present invention relates to the steel pipe technical field of air bag system, is related specifically to and one kind has high intensity
More than 1000MPa high intensity and high tenacity are simultaneously gone back suitable for the low-alloy high-strength welded still pipe of air bag system, the present invention
It is related to the manufacture method of this low-alloy high-strength welded still pipe.
Background technology
In recent years, because the security performance of automobile receives more and more attention, air bag system as on automobile most
Crucial passive safety feature, development is also increasingly rapider, in car collision, the air bag at various positions on automobile
System will inflate ejection rapidly, as buffering between passenger and automobile, protect passenger safety.
When car collision, the gas for being used to deploy in accumulator sprays into air bag quickly, as
The steel pipe that gases at high pressure accumulator for expansion uses, steel pipe moment needs to bear larger pressure, in extreme climate temperature
In the environment of (- 50 DEG C -90 DEG C), the unstability of rolled products of ordinary high-strength steel causes the steel pipe of air bag to be difficult to bear to inflate wink
Between caused high pressure, so as to jeopardize passenger safety.
But in view of the shortcomings of the prior art, developer be necessary to develop a kind of tensile strength with more than 1000MPa,
High ductibility, at a temperature of extreme climate, the air bag system with preferable stability is welded with low-alloy high-strength
Steel pipe.
The content of the invention
To solve the problems, such as that prior art is present, it is strong that the object of the invention provides a kind of tension with more than 1000MPa
Degree, high ductibility, at a temperature of extreme climate, the air bag system with preferable stability is welded with low-alloy high-strength
Connect steel pipe.
To solve above technical problem, the present invention is realized using following technical scheme：
A kind of air bag system low-alloy high-strength welded still pipe, including external diameter is 20mm, wall thickness be 1.2mm and
Length is 150mm steel pipe body, it is characterised in that the steel composition in the steel pipe body is to contain C according to quality %：
Less than 0.12%, Mn：1.60~2.40%, Si：Less than 0.5%, P：Less than 0.03%, S：Less than 0.03%, Cr+Mo：0.3-
0.6 with Nb+Ti：Less than 0.25, V：Less than 0.1, B：Less than 0.01, remaining is Fe；
Manufacture method suitable for above-mentioned air bag system with low-alloy high-strength welded still pipe, is comprised the steps of：
1), slitting will be carried out by the steel band of above-mentioned content first, is separated into 62.8 ± 0.1mm steel band；
2), will be driven into by steel band uncoiling 1) in hopper；
3), steel band enters high-frequency welding unit and welded, and steel band is squeezed into steel pipe shape by mould,
Angular aperture be less than 20 °, speed of welding be 17.5 ± 2m/min, welding current is 65 ± 10A, weldingvoltage is 520 ± 50V, weldering
Connect power be 33 ± 10/KW, welding frequency be 260 ± 20KHz, when steel band edge is heated to more than 1400 degree, by ratio-frequency welding
The compression roller pressurization for the group that picks will melt tactile steel band edge and extrude and weld together；
4) by deburring device, the steel pipe burr that surfaces externally and internally commissure remains in welding process is struck off；
5) natural cooling, is first passed through by the weld line of the steel pipe of step 4), then carries out spray water cooling again；
6) sizing action, is carried out by sizing mill by the steel pipe of step 5)；
7), complete the steel pipe after sizing to cut off it by cutting machine, length of steel pipe 6000mm；
8), modifier treatment will be carried out to it by electrical heating induction coil by steel pipe made of step 7), and can reached
To following mechanical performance：Tensile strength >=1000MPa, yield strength >=750MPa, elongation percentage >=10%, minimum burst pressure >=
1200bar, hydrostatic pressure experiment pressure >=700bar, the modifier treatment are that steel pipe is heated into more than 1400 degree, are then passed through
Quick cooling reaches tempering purpose.
Compared with prior art, the present invention is formed using the steel of above-mentioned mass ratio, can be obtained using above-mentioned manufacture method
To at extreme climate temperature (- 50 DEG C -90 DEG C), the steel pipe still with preferable stability, the steel pipe has higher
Tensile strength and ductility.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the structural representation of high-frequency welding unit of the present invention.
Embodiment
In order that the technical means, the inventive features, the objects and the advantages of the present invention are easy to understand, tie below
Conjunction is specifically illustrating, and the present invention is expanded on further.
A kind of air bag system low-alloy high-strength welded still pipe, including external diameter is 20mm, wall thickness be 1.2mm and
Length is 150mm steel pipe body.
Steel composition in steel pipe body is to contain C according to quality %：Less than 0.12%, Mn：1.60~2.40%, Si：
Less than 0.5%, P：Less than 0.03%, S：Less than 0.03%, Cr+Mo：0.3-0.6 is with Nb+Ti：Less than 0.25, V：Less than 0.1,
B：Less than 0.01, remaining is Fe；
Manufacture method suitable for above-mentioned air bag system with low-alloy high-strength welded still pipe, is comprised the steps of：
1), slitting will be carried out by the steel band of above-mentioned content first, is separated into 62.8 ± 0.1mm steel band；
2), will be driven into by steel band uncoiling 1) in hopper；
3), steel band enters high-frequency welding unit and welded, and high-frequency welding unit includes high frequency electric source 500, compression roller
Wheel 200, coil 300 and impedor 400 (reference picture 1), steel band are squeezed into steel pipe shape by mould, and angular aperture is small
In 20 °, speed of welding be 17.5 ± 2m/min, welding current is 65 ± 10A, weldingvoltage is 520 ± 50V, bonding power is
33 ± 10/KW, welding frequency are 260 ± 20KHz, when steel band edge is heated to more than 1400 degree, by high-frequency welding unit
Compression roller pressurization will melt tactile steel band edge and extrude and weld together；
4) by deburring device, the burr that surfaces externally and internally commissure remains in welding process of steel pipe 100 is scraped
Remove；
5) natural cooling, is first passed through by the weld line of the steel pipe of step 4), then carries out spray water cooling again；
6) sizing action, is carried out by sizing mill by the steel pipe of step 5)；
7), complete the steel pipe after sizing to cut off it by cutting machine, length of steel pipe 6000mm；
8), modifier treatment will be carried out to it by electrical heating induction coil by steel pipe made of step 7), and can reached
To following mechanical performance：Tensile strength >=1000MPa, yield strength >=750MPa, elongation percentage >=10%, minimum burst pressure >=
1200bar, hydrostatic pressure experiment pressure >=700bar, the modifier treatment are that steel pipe is heated into more than 1400 degree, are then passed through
Quick cooling reaches tempering purpose.
This present invention is formed using the steel of above-mentioned mass ratio in summary, can be obtained in pole using above-mentioned manufacture method
Hold under climate temperature (- 50 DEG C -90 DEG C), the steel pipe still with preferable stability, the steel pipe has higher tension strong
Degree and ductility.
General principle, principal character and the advantages of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the simply explanation described in above-described embodiment and specification is originally
The principle of invention, various changes and modifications of the present invention are possible without departing from the spirit and scope of the present invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent defines.
Claims (1)
1. a kind of air bag system low-alloy high-strength welded still pipe, including external diameter is 20mm, wall thickness is 1.2mm and length
Spend the steel pipe body for 150mm, it is characterised in that the steel composition in the steel pipe body is to contain C according to quality %：0.12%
Below, Mn：1.60~2.40%, Si：Less than 0.5%, P：Less than 0.03%, S：Less than 0.03%, Cr+Mo：0.3-0.6 with
Under, Nb+Ti：Less than 0.25, V：Less than 0.1, B：Less than 0.01, remaining is Fe；
Manufacture method suitable for above-mentioned air bag system with low-alloy high-strength welded still pipe, is comprised the steps of：
1), slitting will be carried out by the steel band of above-mentioned content first, is separated into 62.8 ± 0.1mm steel band；
2), will be driven into by steel band uncoiling 1) in hopper；
3), steel band enters high-frequency welding unit and welded, and steel band is squeezed into steel pipe shape by mould, opening
Angle be less than 20 °, speed of welding be 17.5 ± 2m/min, welding current is 65 ± 10A, weldingvoltage be 520 ± 50V, weld work(
Rate is 33 ± 10/KW, welding frequency is 260 ± 20KHz, when steel band edge is heated to more than 1400 degree, by high-frequency welder
The compression roller pressurization of group will melt tactile steel band edge and extrude and weld together；
4), by deburring device, the steel pipe burr that surfaces externally and internally commissure remains in welding process is struck off；
5) natural cooling, is first passed through by the weld line of the steel pipe of step 4), then carries out spray water cooling again；
6) sizing action, is carried out by sizing mill by the steel pipe of step 5)；
7), complete the steel pipe after sizing to cut off it by cutting machine, length of steel pipe 6000mm；
8), modifier treatment will be carried out to it by electrical heating induction coil by steel pipe made of step 7), can reach as
Lower mechanical performance：Tensile strength >=1000MPa, yield strength >=750MPa, elongation percentage >=10%, minimum burst pressure >=
1200bar, hydrostatic pressure experiment pressure >=700bar, the modifier treatment are that steel pipe is heated into more than 1400 degree, are then passed through
Quick cooling reaches tempering purpose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610594666.3A CN106191649B (en) | 2016-07-26 | 2016-07-26 | A kind of air bag system low-alloy high-strength welded still pipe and its manufacture method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610594666.3A CN106191649B (en) | 2016-07-26 | 2016-07-26 | A kind of air bag system low-alloy high-strength welded still pipe and its manufacture method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106191649A CN106191649A (en) | 2016-12-07 |
| CN106191649B true CN106191649B (en) | 2018-02-23 |
Family
ID=57495344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610594666.3A Expired - Fee Related CN106191649B (en) | 2016-07-26 | 2016-07-26 | A kind of air bag system low-alloy high-strength welded still pipe and its manufacture method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106191649B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106826131B (en) * | 2017-02-28 | 2019-10-01 | 云南昆钢新型复合材料开发有限公司 | The tubulation apparatus and its method of compound straight-seam pipes in a kind of stainless steel composite material |
| CN110486963A (en) * | 2019-08-02 | 2019-11-22 | 青岛海尔空调器有限总公司 | Air handling system and window air conditioner |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2585629C (en) * | 2004-10-29 | 2011-06-21 | Sumitomo Metal Industries, Ltd. | Steel pipe for air bag inflator and method for production thereof |
| CN101885136B (en) * | 2010-06-25 | 2012-05-30 | 无锡天龙钢管有限公司 | Production process of special steel pipe for air-conditioning compressor casing |
| CN103215524A (en) * | 2013-03-28 | 2013-07-24 | 宝钢不锈钢有限公司 | Stainless steel welded pipe with excellent pipe processability and manufacturing method thereof |
| CN103292064A (en) * | 2013-06-20 | 2013-09-11 | 江苏丰立精密制管有限公司 | Manufacturing method for steel tubes for supplemental restraint system |
-
2016
- 2016-07-26 CN CN201610594666.3A patent/CN106191649B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN106191649A (en) | 2016-12-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2652341C2 (en) | Method for laser welding one or more workpieces made of hardenable steel in a butt joint | |
| KR101257360B1 (en) | Welded steel pipe welded with a high energy density beam, and a manufacturing method therefor | |
| Amraei et al. | Plastic strain characteristics of butt-welded ultra-high strength steel (UHSS) | |
| RU2635050C2 (en) | Method for laser butt welding of one or several billets of hardened steel with application of filler wire | |
| Chan et al. | Fatigue behavior of laser-welded NiTi wires in small-strain cyclic bending | |
| Song et al. | The influence of laser welding parameters on the microstructure and mechanical property of the as-jointed NiTi alloy wires | |
| CN103537880B (en) | A kind of welding method of laser welder high-strength steel | |
| CN106191649B (en) | A kind of air bag system low-alloy high-strength welded still pipe and its manufacture method | |
| TW200946270A (en) | Welded joint with excellent fatigue-resistance characteristics, and method for producing same | |
| CN103071897A (en) | Submerged arc welding technology of steel plate for low temperature storage tank | |
| CN102554457B (en) | Method for performing diffusion welding of aluminum base alloy and titanium alloy after laser melting | |
| JP5864414B2 (en) | Forming and hardening steel plate blanks | |
| Faes et al. | Parameter optimisation for automatic pipeline girth welding using a new friction welding method | |
| CN103753023B (en) | The welding method of hot rolling nano reinforcement steel plate | |
| CN102935551B (en) | Flash welding forming method of aluminum alloy thin-wall ring member | |
| CN102962569B (en) | Flash welding shaping method for Alpha-phase titanium alloy thin-walled ring | |
| WO2002077404A3 (en) | Methods of girth welding high strength steel pipes to achieve pipeline crack arrestability | |
| CN108034957A (en) | High-carbon steel welds acid washing method | |
| JP2018024017A (en) | High-grade steel continuous hot rolling method | |
| TW200817112A (en) | Apparatus for manufacturing seam-welded pipe excelling in welded portion characteristic | |
| JP2008183565A (en) | Laser beam welding method of lapped part of steel sheet | |
| Yan et al. | Processing of multi-sheet structures of an aluminum alloy by laser welding/superplastic forming | |
| Ugla | Characterization of metallurgical and mechanical properties of the welded AISI 304L using pulsed and non-pulsed current TIG welding | |
| CN111014952A (en) | Welding method of cold-rolled 25# steel solid laser welding machine | |
| JP4586515B2 (en) | Welded steel pipe with secondary workability comparable to that of the base metal in the welded part and method for producing the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180223 Termination date: 20180726 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |