CN111112424A - Thermal forming method for B column of automobile frame - Google Patents
Thermal forming method for B column of automobile frame Download PDFInfo
- Publication number
- CN111112424A CN111112424A CN202010041413.XA CN202010041413A CN111112424A CN 111112424 A CN111112424 A CN 111112424A CN 202010041413 A CN202010041413 A CN 202010041413A CN 111112424 A CN111112424 A CN 111112424A
- Authority
- CN
- China
- Prior art keywords
- column
- automobile frame
- thermoforming
- triangular block
- heating temperature
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/02—Stamping using rigid devices or tools
- B21D22/022—Stamping using rigid devices or tools by heating the blank or stamping associated with heat treatment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/16—Heating or cooling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
- B21D53/88—Making other particular articles other parts for vehicles, e.g. cowlings, mudguards
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/008—Martensite
Abstract
The invention relates to a thermal forming method for a B column of an automobile frame. The method for thermally forming the B column of the automobile frame comprises the following steps: dividing a B column main body into an upper column and a triangular block, wherein the upper column and the triangular block are integrally formed, the upper column and the triangular block are simultaneously subjected to thermal forming, pressurizing and quenching to form a piece, soft blocks are arranged on the surface of the triangular block, and gradual change blocks are formed between the soft blocks and other parts of the triangular block; the method for thermally forming the B column of the automobile frame is ingenious in design and convenient to use, improves the hardness of the B column conveniently, improves the quality of the frame, is convenient to cut the B column when a traffic accident happens, and is convenient to popularize and use.
Description
Technical Field
The invention belongs to the technical field of thermal forming, and particularly relates to a thermal forming method for a B column of an automobile frame.
Background
In order to improve the collision performance of the whole automobile, the application of the thermal forming part on the automobile body is more and more extensive. However, the traditional hot forming part mainly has a quenched martensite structure, and only one strength range can be realized on the same part. The hot forming part is subjected to a local softening process, a local material organization structure is customized, different strength ranges of the same part in different areas can be realized, and the optimization of the collision performance of the whole vehicle is facilitated.
Disclosure of Invention
The invention aims to solve the problems and provide a method for thermoforming a B column of an automobile frame, which has a simple structure and reasonable design.
The invention realizes the purpose through the following technical scheme:
a thermal forming method for a B column of an automobile frame comprises the following steps: divide into upper prop and triangle piece with B post main part, upper prop and triangle piece integrated into one piece preparation, the upper prop is with three triangle piece thermoforming pressure quenching one-tenth simultaneously, the surface of triangle piece sets up the soft piece, form the gradual change piece between soft piece and the three triangle piece other parts.
As a further optimization scheme of the invention, the initial heating temperature of the hot forming is 900-940 ℃, the stamping speed is 150mm/s, and the plate with the thickness of 1.5mm is obtained.
As a further optimization of the present invention, the initial heating temperature of the thermoforming is 930 ℃.
As a further optimization scheme of the invention, the plate is normalized at 880 ℃ and tempered at 260 ℃ and then is shaped.
As a further optimization scheme of the invention, the soft block area heating temperature of the surface of the triangular block is 560-800 ℃.
As a further optimization scheme of the invention, the heating temperature of the soft block area is 800 ℃.
The invention has the beneficial effects that: after the B column manufactured by the invention is subjected to hot stamping forming, the tensile strength of an experimental part reaches 1213MPa, the yield strength reaches 986MPa, the hardness reaches 37.9HRC, the soft block and the gradual change block are arranged, the B column can be conveniently cut when a traffic accident happens through the gradual change block, the whole method is ingenious in design and convenient to use, the hardness of the B column can be conveniently improved, the quality of a vehicle frame can be improved, the B column can be conveniently cut when the traffic accident happens, and the B column is convenient to popularize and use.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic side view of the upper column and the triangular block of the present invention.
In the figure: 1. putting the column on; 2. a triangular block; 3. a soft block; 4. and (6) gradually changing blocks.
Detailed Description
The present application will now be described in further detail with reference to the drawings, it should be noted that the following detailed description is given for illustrative purposes only and is not to be construed as limiting the scope of the present application, as those skilled in the art will be able to make numerous insubstantial modifications and adaptations to the present application based on the above disclosure.
Example 1
As shown in fig. 1 and 2, a method for thermoforming a B-pillar of an automobile frame comprises the following steps: divide into upper prop 1 and triangle piece 2 with the B post main part, upper prop 1 and triangle piece 2 integrated into one piece preparation, upper prop 1 and triangle piece 2 thermoforming press quenching one-tenth simultaneously, the surface of triangle piece 2 sets up soft piece 3, form gradually-changing block 4 between soft piece 3 and the triangle piece 2 other parts.
The initial heating temperature of the hot forming is 900-940 ℃, the stamping speed is 150mm/s, and a plate with the thickness of 1.5mm is obtained; most preferably, the initial heating temperature of the thermoforming is 930 ℃; normalizing the plate at 880 ℃, tempering at 260 ℃ and shaping; the heating temperature of the soft block 3 area on the surface of the triangular block 2 is 560-800 ℃, and the optimal heating temperature of the soft block 3 area is 800 ℃;
in the actual preparation, firstly, a plate is heated and subjected to thermal forming treatment, the initial temperature of thermal forming is optimal when 930 ℃, the plate is punched to finally obtain the plate with the thickness of 1.5mm, then the upper column 1 and the triangular block 2 are subjected to mold closing treatment, the temperature of a mold insert is less than or equal to 50 ℃, meanwhile, the soft block 3 is subjected to heating treatment, the heating temperature is controlled to be 800 ℃, and then the plate is subjected to normalizing and tempering treatment to obtain the formed plate.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (6)
1. A thermal forming method for a B column of an automobile frame is characterized by comprising the following steps: divide into upper prop (1) and three hornblocks (2) with the B post main part, upper prop (1) and three hornblocks (2) integrated into one piece preparation, upper prop (1) and three hornblocks (2) thermoforming pressure quenching one-tenth simultaneously, the surface of three hornblocks (2) sets up soft piece (3), form gradually-changed block (4) between soft piece (3) and three hornblocks (2) other parts.
2. The method for thermoforming a B-pillar of an automobile frame as claimed in claim 1, wherein: the initial heating temperature of the hot forming is 900-940 ℃, the stamping speed is 150mm/s, and a plate with the thickness of 1.5mm is obtained.
3. The method for thermoforming a B-pillar of an automobile frame as claimed in claim 2, wherein: the initial heating temperature for thermoforming was 930 ℃.
4. The method for thermoforming a B-pillar of an automobile frame as claimed in claim 3, wherein: and (3) normalizing the plate material at 880 ℃, tempering at 260 ℃ and shaping.
5. The method for thermoforming a B-pillar of an automobile frame as claimed in claim 4, wherein: the heating temperature of the soft block (3) area on the surface of the triangular block (2) is 560-800 ℃.
6. The method for thermoforming a B-pillar of an automobile frame as claimed in claim 5, wherein: the heating temperature of the soft block (3) area is 800 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010041413.XA CN111112424A (en) | 2020-01-15 | 2020-01-15 | Thermal forming method for B column of automobile frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010041413.XA CN111112424A (en) | 2020-01-15 | 2020-01-15 | Thermal forming method for B column of automobile frame |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111112424A true CN111112424A (en) | 2020-05-08 |
Family
ID=70490580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010041413.XA Pending CN111112424A (en) | 2020-01-15 | 2020-01-15 | Thermal forming method for B column of automobile frame |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111112424A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103817193A (en) * | 2014-01-28 | 2014-05-28 | 无锡红弦汽车轻量化科技有限公司 | Pressure cooling process for thermally-formed steel plate sectionally-strengthen-type parts and press hydraulic ejector rod device |
| CN104023899A (en) * | 2012-12-03 | 2014-09-03 | 现代Hysco株式会社 | Tailor welded blanks, method for manufacturing same, and hot stamping parts using same |
| CN106086364A (en) * | 2016-08-11 | 2016-11-09 | 卡斯马汽车系统（重庆）有限公司 | Automobile thermoforming parts locally softening method |
-
2020
- 2020-01-15 CN CN202010041413.XA patent/CN111112424A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104023899A (en) * | 2012-12-03 | 2014-09-03 | 现代Hysco株式会社 | Tailor welded blanks, method for manufacturing same, and hot stamping parts using same |
| CN103817193A (en) * | 2014-01-28 | 2014-05-28 | 无锡红弦汽车轻量化科技有限公司 | Pressure cooling process for thermally-formed steel plate sectionally-strengthen-type parts and press hydraulic ejector rod device |
| CN106086364A (en) * | 2016-08-11 | 2016-11-09 | 卡斯马汽车系统（重庆）有限公司 | Automobile thermoforming parts locally softening method |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for 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: 20200508 |