CN104590385A - Column B for vehicle and manufacturing method - Google Patents
Column B for vehicle and manufacturing method Download PDFInfo
- Publication number
- CN104590385A CN104590385A CN201410782468.0A CN201410782468A CN104590385A CN 104590385 A CN104590385 A CN 104590385A CN 201410782468 A CN201410782468 A CN 201410782468A CN 104590385 A CN104590385 A CN 104590385A
- Authority
- CN
- China
- Prior art keywords
- post
- column
- vehicle
- region part
- main body
- 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.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
- B62D25/04—Door pillars ; windshield pillars
-
- 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
Abstract
The invention relates to a column B for a vehicle and a manufacturing method. The column B comprises a column B body and is characterized in that a hard region part is arranged at the upper portion of the column B body, a soft region part is arranged at the lower portion of the column B body, a transitional region is arranged between the hard region part and the soft region part, a reinforcing board is arranged on the hard region part, the hard region part is of a martensitic structure with the strength ranging from 1300 MPa to 1500 MPa, and the soft region part is of a ferrite and pearlitic structure or a bainite structure with the strength ranging from 500 MPa to 700 MPa. The manufacturing method of the column B for the vehicle includes the following steps that firstly, a contour material sheet of the column B and a contour material sheet of the reinforcing board are welded together according to requirements, so that blanks are acquired; secondly, the blanks are placed in a heating furnace together so as to be heated and austenitized; thirdly, the austenitized blanks are thermally formed in a die together and meanwhile, quenching is conducted, wherein heat of the soft region part is preserved and the ferrite and pearlitic structure or the bainite structure is acquired through slow cooling. One-time thermal forming is adopted, extra tools are not needed, and the requirement of the vehicle for light weight is met.
Description
Technical field
The present invention relates to a kind of B post for vehicle and manufacture method, belong to vehicle part technical field.
Background technology
The B post of automobile is the vertical beam on automobile, between the front stall and back seat of driving compartment, extends to bottom car from roof.B post is supported cart top cover not only, also will bear the supporting power of forward and backward car door, B post is also wanted some additional components of device, the safety strap of such as dress circle, sometimes also will wear electric wire wire harness.Therefore B post mostly has external convex radius, transmits performance to ensure good power.The B column section shape of Modern Car is more complicated, and it is welded by more than one piece stamping steel plate.Along with the development of auto manufacturing technology, need not weld and directly adopt the closed section center pillar of shaped by fluid pressure to come out, its rigidity improves greatly and weight significantly reduces, and is conducive to the lightweight of Modern Car.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide a kind of B post for vehicle and manufacture method, one-step hot moulding, without the need to extra frock, and meet vehicle lightweight requirements.
According to technical scheme provided by the invention, the described B post for vehicle, comprises B post main body, and B post body top is the upper fixed part fixing with roof, and B post bottom part body is the lower fixed part fixing with threshold; It is characterized in that: the top of described B post main body is hard area part, bottom is soft district part, is transition region between hard area part and soft district part; Described hard area part is the martensitic stucture of intensity 1300 ~ 1500MPa, and soft district part is the ferrite and pearlite tissue of intensity 500 ~ 700MPa or is bainite structure; In described hard area, part arranges brace panel, the martensitic stucture of brace panel to be intensity be 1300 ~ 1500MPa.
Further, the height of described transition region is about 50mm.
Further, the height of described soft district part accounts for 10% ~ 25% of B post body height.
The manufacture method of the described B post for vehicle, is characterized in that, comprise the following steps:
(1) by the profile tablet weld together on request of the profile tablet of B post and brace panel, blank is obtained;
(2) blank that step (1) obtains is put into together heating furnace heating austenitizing;
(3) by the Heat forming together in mould of the blank after step (2) austenitizing, and quench simultaneously; Wherein, soft district part is incubated, and obtains ferrite and pearlite tissue or bainite structure through cooling at a slow speed.
The present invention has the following advantages: (1) brace panel is that Heat forming makes, and can reach the effect of loss of weight; In prior art, the cold-worked part weight of equality strength is large, does not meet lightweight trend; (2) B post and brace panel are once hot-forming, without the need to extra frock; (3) B post and brace panel are welded during flat material, stability is high, quality controllable; (4) B post bottom intensity is weak, can reach distortion energy-absorbing object, can better protect driver and crew's head during collision.
Accompanying drawing explanation
Fig. 1 is the structural representation of B post of the present invention.
Fig. 2 is the lateral plan of described B post.
Fig. 3 is the structural representation of brace panel.
Detailed description of the invention
Below in conjunction with concrete accompanying drawing, the invention will be further described.
As shown in FIG. 1 to 3: the described B post for vehicle comprises upper fixed part 1, lower fixed part 2, B post main body 3, hard area part 4, soft district part 5, transition region 6, brace panel 7 etc.
As shown in Figure 1 and Figure 2, the present invention includes B post main body 3, B post main body 3 top is bottom upper fixed part 1, the B post main body 3 fixing with roof be the lower fixed part 2 fixed with threshold; The top of described B post main body 3 is hard area part 4, and bottom is soft district part 5, is transition region 6 between hard area part 4 and soft district part 5; Described hard area part 4 is obtained by ultra-high-tensile steel heat forming technology, and intensity is the martensitic stucture of 1300 ~ 1500MPa; Described soft district part 5 is in ultra-high-tensile steel heat forming technology, by cooling at a slow speed ferrite and pearlite tissue that the intensity obtained is 500 ~ 700MPa or being bainite structure;
The height of described transition region 6 is about 50mm; The height of described soft district part 5 accounts for 10% ~ 25% of B post main body 3 height;
In described hard area part 4, brace panel 7 is set, brace panel 7 for intensity be the martensitic stucture of 1300 ~ 1500MPa.
The manufacture method of the described B post for vehicle, comprises the following steps:
(1) by the profile tablet weld together on request of the profile tablet of B post and brace panel, blank is obtained;
(2) blank that step (1) obtains is put into together heating furnace heating austenitizing;
(3) by the Heat forming together in mould of the blank after step (2) austenitizing, and quench simultaneously; Wherein, soft district part is incubated, and obtains ferrite and pearlite tissue or bainite structure through cooling at a slow speed.
B post and brace panel weld when flat material by the present invention, then carry out once hot-forming, have following effect: (1) brace panel is that Heat forming makes, and can reach the effect of loss of weight; In prior art, the cold-worked part weight of equality strength is large, does not meet lightweight trend; (2) B post and brace panel are once hot-forming, without the need to extra frock; (3) B post and brace panel are welded during flat material, stability is high, quality controllable; (4) B post bottom intensity is weak, can reach distortion energy-absorbing object, can better protect driver and crew's head during collision.
Claims (4)
1. for a B post for vehicle, comprise B post main body (3), B post main body (3) top is the upper fixed part (1) fixing with roof, and B post main body (3) bottom is the lower fixed part (2) fixing with threshold; It is characterized in that: the top of described B post main body (3) is hard area part (4), and bottom is soft district part (5), is transition region (6) between hard area part (4) and soft district part (5); The martensitic stucture that described hard area part (4) is intensity 1300 ~ 1500MPa, the ferrite and pearlite tissue that soft district part (5) is intensity 500 ~ 700MPa or be bainite structure; In described hard area part (4), brace panel (7) is set, brace panel (7) for intensity be the martensitic stucture of 1300 ~ 1500MPa.
2., as claimed in claim 1 for the B post of vehicle, it is characterized in that: the height of described transition region (6) is about 50mm.
3. as claimed in claim 1 for the B post of vehicle, it is characterized in that: the height of described soft district part (5) accounts for 10% ~ 25% of B post main body (3) height.
4., for a manufacture method for the B post of vehicle, it is characterized in that, comprise the following steps:
(1) by the profile tablet weld together on request of the profile tablet of B post and brace panel, blank is obtained;
(2) blank that step (1) obtains is put into together heating furnace heating austenitizing;
(3) by the Heat forming together in mould of the blank after step (2) austenitizing, and quench simultaneously; Wherein, soft district part is incubated, and obtains ferrite and pearlite tissue or bainite structure through cooling at a slow speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410782468.0A CN104590385A (en) | 2014-12-17 | 2014-12-17 | Column B for vehicle and manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410782468.0A CN104590385A (en) | 2014-12-17 | 2014-12-17 | Column B for vehicle and manufacturing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104590385A true CN104590385A (en) | 2015-05-06 |
Family
ID=53116537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410782468.0A Pending CN104590385A (en) | 2014-12-17 | 2014-12-17 | Column B for vehicle and manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104590385A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106043446A (en) * | 2016-06-08 | 2016-10-26 | 奇瑞汽车股份有限公司 | Integrated column B reinforcing board and machining method thereof |
| WO2017172546A1 (en) | 2016-03-29 | 2017-10-05 | Magna International Inc. | B-pillar with tailored properties |
| CN108307629A (en) * | 2015-12-18 | 2018-07-20 | 自动工程公司 | B columns center sill and manufacturing method |
| CN114524023A (en) * | 2020-11-23 | 2022-05-24 | 广州汽车集团股份有限公司 | Vehicle body structure and automobile |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020104591A1 (en) * | 2000-08-19 | 2002-08-08 | Ludger Gehringhoff | B-column for motor vehicle |
| CN101547768A (en) * | 2006-12-08 | 2009-09-30 | Gm全球科技运作股份有限公司 | Composite made of two steel sheets |
| JP2009274590A (en) * | 2008-05-14 | 2009-11-26 | Nippon Steel Corp | Center pillar reinforcing member and its manufacturing method |
| CN101861265A (en) * | 2007-11-15 | 2010-10-13 | 耶斯塔姆普硬技术股份公司 | A B-pillar for a vehicle |
| CN202574384U (en) * | 2012-05-07 | 2012-12-05 | 东风汽车公司 | Automobile body side wall B-pillar structure |
-
2014
- 2014-12-17 CN CN201410782468.0A patent/CN104590385A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020104591A1 (en) * | 2000-08-19 | 2002-08-08 | Ludger Gehringhoff | B-column for motor vehicle |
| CN101547768A (en) * | 2006-12-08 | 2009-09-30 | Gm全球科技运作股份有限公司 | Composite made of two steel sheets |
| CN101861265A (en) * | 2007-11-15 | 2010-10-13 | 耶斯塔姆普硬技术股份公司 | A B-pillar for a vehicle |
| JP2009274590A (en) * | 2008-05-14 | 2009-11-26 | Nippon Steel Corp | Center pillar reinforcing member and its manufacturing method |
| CN202574384U (en) * | 2012-05-07 | 2012-12-05 | 东风汽车公司 | Automobile body side wall B-pillar structure |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108307629A (en) * | 2015-12-18 | 2018-07-20 | 自动工程公司 | B columns center sill and manufacturing method |
| CN108307629B (en) * | 2015-12-18 | 2021-01-29 | 自动工程有限公司 | B-pillar central beam and manufacturing method thereof |
| WO2017172546A1 (en) | 2016-03-29 | 2017-10-05 | Magna International Inc. | B-pillar with tailored properties |
| EP3436207A4 (en) * | 2016-03-29 | 2019-11-27 | Magna International Inc. | B-pillar with tailored properties |
| US11148725B2 (en) | 2016-03-29 | 2021-10-19 | Magna International Inc. | B-pillar with tailored properties |
| CN106043446A (en) * | 2016-06-08 | 2016-10-26 | 奇瑞汽车股份有限公司 | Integrated column B reinforcing board and machining method thereof |
| CN114524023A (en) * | 2020-11-23 | 2022-05-24 | 广州汽车集团股份有限公司 | Vehicle body structure and automobile |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150506 |