CN104708274A - Surface hardening method of automobile parts - Google Patents
Surface hardening method of automobile parts Download PDFInfo
- Publication number
- CN104708274A CN104708274A CN201510052840.7A CN201510052840A CN104708274A CN 104708274 A CN104708274 A CN 104708274A CN 201510052840 A CN201510052840 A CN 201510052840A CN 104708274 A CN104708274 A CN 104708274A
- Authority
- CN
- China
- Prior art keywords
- heat treatment
- automobile parts
- cold pressing
- cold
- forming
- 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
- 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
-
- 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 invention discloses a surface hardening method of automobile parts, and relates to the technical field of automobile part manufacturing. The surface hardening method of the automobile parts comprises the steps that blank sheets are prepared, wherein heat treatment hardening steel plates with different thicknesses are prepared to be multiple needed blank sheets; blanks are combined, wherein the multiple blank sheets are spliced to be a combined part through laser welding; cold forming is conducted, wherein cold pressing forming is conducted on the combined part to make the shape of the combined part be cold pressing preforming; heat treatment hardening forming is conducted, wherein the cold pressing preformed combined part is heated, the heating temperature is higher than AC3, the combined part is formed through a mold, under the restriction of the mold, quenching is conducted, and the surface hardening of the automobile parts is completed. Compared with the prior art, the surface hardening method of the automobile parts can solve the problem that a big error of dimensional precision exists in splicing of the automobile parts through using steel plate with different strength.
Description
Technical field
The present invention relates to auto parts machinery manufacturing technology field, especially a kind of auto parts machinery manufacture method of the heat treatment hardened steel for different-thickness.
Background technology
The difference of various piece owing to requiring in design feature of vehicle, some means suitable high strength, some part then requires high impact toughness, therefore, there is the accessory of local requirement varying strength; At present when manufacture has the accessory of the vehicle of varying strength, for the part requiring high strength, utilize heat treatment hardened steel plate to manufacture accessory, for requiring low intensive part, then use general steel plate to manufacture, then the accessory of two or more different steel grades coupled together by the mode of welding or cold pressing the parts manufacturing vehicle; Adopt the material of varying strength to carry out the mode connected, the phenomenon causing occurring that size is inconsistent because the elastic deformation between material is different, dimensional accuracy error is large.
Summary of the invention
Problem solved by the invention is to provide a kind of auto parts machinery surface reinforcing method, and the splicing carrying out vehicle body fittings with the steel plate solving existing employing varying strength exists the large problem of dimensional accuracy error.
In order to solve the problem, the technical solution used in the present invention is: a kind of auto parts machinery surface reinforcing method, is characterized in that comprising the steps:
A, prepare blank thin slice: the heat treatment hardened steel plate of different-thickness is prepared into required polylith blank thin slice;
The fit shape of B, blank: utilize laser weld that blank thin sheet splicing described in polylith is become fit part;
C, cold forming: carry out cold moudling to described fit part, make its shape cold pressing preformed;
D, heat treatment hardened forming: will cold pressing preformed described in be heated to more than AC3 temperature, then by mould by shaping for described fit part and carry out quenching under the state of mould constraint namely completing the surface peening of auto parts machinery.
In above-mentioned auto parts machinery surface reinforcing method technical scheme, technical scheme can also be more specifically: described heat treatment hardened steel plate comprises raw material C:0.12% ~ 0.4%, Si:0.03% ~ 0.3%, Mn:1.0% ~ 2.0%, S≤0.003%, B:0.0005% ~ 0.08%, Zr:0.005% ~ 0.1%, Ca:0.001% ~ 0.005% of following weight portion, and surplus is Fe and inevitable impurity composition.
Owing to have employed technique scheme, the present invention compared with prior art has following beneficial effect: due to using heat treatment hardened steel plate as materials'use, after welding under blank state in laser weld mode, after the shape of accessory is processed in cold forming and thermoforming process, complete heat treatment hardening process; Thus, in accessory finished product, shaping residual stress can not be there is, improve the dimensional accuracy that accessory manufactures.
Detailed description of the invention
Below in conjunction with example, the invention will be further described:
Embodiment 1:
A kind of auto parts machinery surface reinforcing method, it comprises the steps:
A, prepare blank thin slice: the heat treatment hardened steel plate of different-thickness is prepared into required polylith blank thin slice; This heat treatment hardened steel plate comprises raw material C:0.12%, Si:0.03%, Mn:1.0%, S:0.003%, B:0.0005%, Zr:0.005%, Ca:0.001% of following weight portion, and surplus is Fe and inevitable impurity composition;
The fit shape of B, blank: utilize laser weld that polylith blank thin sheet splicing is become fit part;
C, cold forming: carry out cold moudling to fit part, make its shape cold pressing preformed;
D, heat treatment hardened forming: will cold pressing preformedly is heated to more than AC3 temperature, then by mould by shaping for fit part and carry out quenching under the state of mould constraint namely completing the surface peening of auto parts machinery.
Embodiment 2:
A, prepare blank thin slice: the heat treatment hardened steel plate of different-thickness is prepared into required polylith blank thin slice; This heat treatment hardened steel plate comprises raw material C:0.4%, Si:0.3%, Mn:2.0%, S:0.002%, B:0.08%, Zr:0.1%, Ca:0.005% of following weight portion, and surplus is Fe and inevitable impurity composition;
The fit shape of B, blank: utilize laser weld that polylith blank thin sheet splicing is become fit part;
C, cold forming: carry out cold moudling to fit part, make its shape cold pressing preformed;
D, heat treatment hardened forming: will cold pressing preformedly is heated to more than AC3 temperature, then by mould by shaping for fit part and carry out quenching under the state of mould constraint namely completing the surface peening of auto parts machinery.
Claims (2)
1. an auto parts machinery surface reinforcing method, is characterized in that comprising the steps:
A, prepare blank thin slice: the heat treatment hardened steel plate of different-thickness is prepared into required polylith blank thin slice;
The fit shape of B, blank: utilize laser weld that blank thin sheet splicing described in polylith is become fit part;
C, cold forming: carry out cold moudling to described fit part, make its shape cold pressing preformed;
D, heat treatment hardened forming: will cold pressing preformed described in be heated to more than AC3 temperature, then by mould by shaping for described fit part and carry out quenching under the state of mould constraint namely completing the surface peening of auto parts machinery.
2. auto parts machinery surface reinforcing method according to claim 1, it is characterized in that: described heat treatment hardened steel plate comprises raw material C:0.12% ~ 0.4%, Si:0.03% ~ 0.3%, Mn:1.0% ~ 2.0%, S≤0.003%, B:0.0005% ~ 0.08%, Zr:0.005% ~ 0.1%, Ca:0.001% ~ 0.005% of following weight portion, surplus is Fe and inevitable impurity composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510052840.7A CN104708274A (en) | 2015-02-02 | 2015-02-02 | Surface hardening method of automobile parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510052840.7A CN104708274A (en) | 2015-02-02 | 2015-02-02 | Surface hardening method of automobile parts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104708274A true CN104708274A (en) | 2015-06-17 |
Family
ID=53408270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510052840.7A Pending CN104708274A (en) | 2015-02-02 | 2015-02-02 | Surface hardening method of automobile parts |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104708274A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004058082A (en) * | 2002-07-26 | 2004-02-26 | Aisin Takaoka Ltd | Method for producing tailored blank press formed article |
| JP2007154257A (en) * | 2005-12-05 | 2007-06-21 | Sumitomo Metal Ind Ltd | Tailored blank material for hot press, hot press member and its production method |
| CN101896293A (en) * | 2008-10-16 | 2010-11-24 | 现代Hysco株式会社 | Method for manufacturing super strong steel body |
| KR20110056888A (en) * | 2009-11-23 | 2011-05-31 | 현대하이스코 주식회사 | Taylor welded hot stamping method and steel parts using the same |
| CN102712962A (en) * | 2010-11-03 | 2012-10-03 | 现代Hysco株式会社 | Method for manufacturing automobile part having different local strengths using heat-treatment hardening steel plate |
-
2015
- 2015-02-02 CN CN201510052840.7A patent/CN104708274A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004058082A (en) * | 2002-07-26 | 2004-02-26 | Aisin Takaoka Ltd | Method for producing tailored blank press formed article |
| JP2007154257A (en) * | 2005-12-05 | 2007-06-21 | Sumitomo Metal Ind Ltd | Tailored blank material for hot press, hot press member and its production method |
| CN101896293A (en) * | 2008-10-16 | 2010-11-24 | 现代Hysco株式会社 | Method for manufacturing super strong steel body |
| KR20110056888A (en) * | 2009-11-23 | 2011-05-31 | 현대하이스코 주식회사 | Taylor welded hot stamping method and steel parts using the same |
| CN102712962A (en) * | 2010-11-03 | 2012-10-03 | 现代Hysco株式会社 | Method for manufacturing automobile part having different local strengths using heat-treatment hardening steel plate |
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150617 |