CN107309285A - A kind of method for rolling automobile steel composite board - Google Patents
A kind of method for rolling automobile steel composite board Download PDFInfo
- Publication number
- CN107309285A CN107309285A CN201710651631.3A CN201710651631A CN107309285A CN 107309285 A CN107309285 A CN 107309285A CN 201710651631 A CN201710651631 A CN 201710651631A CN 107309285 A CN107309285 A CN 107309285A
- Authority
- CN
- China
- Prior art keywords
- steel
- rolling
- composite
- twip
- annealing
- 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
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/38—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling sheets of limited length, e.g. folded sheets, superimposed sheets, pack rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B47/00—Auxiliary arrangements, devices or methods in connection with rolling of multi-layer sheets of metal
-
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/38—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling sheets of limited length, e.g. folded sheets, superimposed sheets, pack rolling
- B21B2001/386—Plates
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
Abstract
It is an object of the present invention to provide a kind of method for rolling automobile steel composite board, belong to composite manufacture field.This method includes the selection of base raw material, base, four big steps of rolling and annealing, and the automobile steel composite board of this method production, core material selects TWIP steel, and plied timber selects low-carbon up and down（LC）Steel and gapless（IF）Steel, realizes firm metallurgical binding, and interface bond strength is more than 220MPa；Meanwhile, by the surface of TWIP steel substrates by the business steel of low cost, such as low-carbon（LC）Steel and gapless（IF）Steel is replaced, and automobile steel composite board is had the advantage of excellent delayed fracture, spot weldability and surface quality, is overcome the shortcoming of TWIP steel.In addition, the volume by controlling sandwich layer TWIP steel（Or thickness）Fraction, the TWIP steel composite boards of manufacture have very wide range of mechanical property.
Description
Technical field
It is an object of the present invention to provide a kind of method for rolling automobile steel composite board, belong to composite manufacture field.
Background technology
The lightweight of automobile steel develops new direction in addition to alloy in lightweight and composite, passes through the reduction of part total quality
Light-weighted effect is played, main method includes the Composite of ferrous materials and the low-density of ferrous materials.TWIP steel is simultaneously
Show very high intensity and ductility.However, because TWIP steel often faces Liquid Metal Embrittlement during such as spot welding, into
After type the problems such as the plate surface quality of delayed fracture and deterioration, TWIP steel the widespread commercial of automobile industry have to by
Postpone.Low-carbon（LC）Steel and gapless（IF）The commercial steel of the low cost such as steel has good plasticity, ductility and surface quality, but
Intensity is very low；If a kind of existing high intensity of exploitation, high ductibility and surface quality automobile steel, will bring great market price
Value.
The content of the invention
The present invention's will provide a kind of method method for rolling automobile steel composite board, can overcome the surface of automobile steel TWIP steel
Quality, weldability is poor, the shortcomings of formability is poor.
The present invention, which is achieved in that, is characterized in that procedure of processing is：
（1）Base raw material is selected：Core material selects TWIP steel, and plied timber selects low-carbon（LC）Steel and gapless（IF）Steel；
（2）Base：By step（1）The core material and plied timber chosen are surface-treated using mechanical means, make oxidation
The impurity such as skin, passivation layer are removed；Then treat composite surface using wire brush or wire drawing machine finely to be polished, increase the thick of surface
Rugosity is beneficial to follow-up compound；Finally go to degrease using alcohol washes surface, foul etc., drying；Following symmetrical three are carried out afterwards
It is prepared by layer composite plate blanks（Cladding requires to select with sandwich layer thickness of slab according to actual product）, core material puts centre, and its outer layer is stacked
Step（1）The plied timber chosen, cladding fits with sandwich layer surface to be composite, and plied timber is slightly larger than core material, then
Composite plate blanks are evacuated to 1x10-2 ~ 1 by sealing welding plied timber, and reserved exhaust tube by high vacuum diffusion pump unit
After x10-3Pa, and pressurize 2 hours, exhaust tube is sealed, vacuum composite plate base is obtained；
（3）Rolling：By step（2）In obtained vacuum composite plate base feeding heating furnace, conventional heating is carried out, heating-up temperature is
1200 DEG C~1250 DEG C, mill milling is sent into afterwards, and start rolling temperature is 1100 DEG C~1150 DEG C, finishing temperature 900 DEG C~950
DEG C, accumulation rolling reduction ratio is more than 75%, and then air cooling carries out cold rolling, cold-rolled products specification to composite plate；
（4）Annealing：By step（3）Cold rolling composite plate is made to make annealing treatment, 800~840 DEG C of annealing times 30 of annealing temperature~
60s。
Advantage of the present invention and good effect：
By the surface of TWIP steel substrates by the business steel such as low-carbon of low cost（LC）Steel and gapless（IF）Steel is replaced, and makes vapour
Car steel composite board has the advantage of excellent delayed fracture, spot weldability and surface quality, overcomes the shortcoming of TWIP steel.In addition,
By the volume for controlling sandwich layer TWIP steel（Or thickness）Fraction, the TWIP steel composite boards of manufacture have very wide range of mechanical property
Energy.
Brief description of the drawings
Fig. 1 composite plate schematic cross-sections；
1 in figure --- edge coating, 2 --- coating, 3 --- interleaving agent, 4 --- basic unit, 5 --- interspace in advance, 6 --- side
Portion's coating, 7 --- exhaust tube.
Specific implementation：
Now exemplified by producing the thick three-layer automotive steel composite boards of 3mm, as shown in Figure 1.The present invention production process be：Base raw material is selected
Select → base → rolling → annealing.
Procedure of processing is：
（1）Base raw material is selected：Core material selects 200mm x 100mm x 20mm thickness Fe-25Mn-3Al-3Si steel, cladding
Material selection 200mm x 100mm x20mm thickness IF steel；
（2）Base：By step（1）The base material and antibacterial plied timber chosen are surface-treated using mechanical means, are made
The impurity such as oxide skin, passivation layer are removed；Then treat composite surface using wire brush or wire drawing machine finely to be polished, increase surface
Roughness be beneficial to it is follow-up compound；Finally go to degrease using alcohol washes surface, foul etc., drying；It is following right to carry out afterwards
Three-layer composite board base is claimed to prepare（Threeply degree ratio is 1:1：1）, core material puts centre, and its outer stack is striden suddenly（1）Choose
Plied timber, cladding fits with sandwich layer surface to be composite, and plied timber is slightly larger than core material, then sealing welding cladding material
Composite plate blanks are evacuated to the x10-3Pa of 1x10-2 ~ 1, and pressurize by material, and reserved exhaust tube by high vacuum diffusion pump unit
After 2 hours, exhaust tube is sealed, vacuum composite plate base is obtained；
（3）Rolling：By step（2）In obtained vacuum composite plate base feeding heating furnace, conventional heating is carried out, heating-up temperature is
1200 DEG C~1250 DEG C, mill milling is sent into afterwards, and start rolling temperature is 1100 DEG C~1150 DEG C, finishing temperature 900 DEG C~950
DEG C, accumulation rolling reduction ratio 90%, air cooling is then cold rolling to composite plate progress, is cold-rolled to 3mm；
（4）Annealing：By step（3）Cold rolling composite plate is made to make annealing treatment, 800~840 DEG C of annealing times 30 of annealing temperature~
60s。
Claims (1)
1. a kind of method for rolling automobile steel composite board, it is characterised in that comprise the following steps：
Step（1）, the selection of base raw material：Core material selects TWIP steel, and plied timber selects low-carbon（LC）Steel and gapless
（IF）Steel；
Step（2）：By step（1）The core material and plied timber chosen are surface-treated using mechanical means；It is laggard
It is prepared by the following symmetrical three-layer composite board base of row（Cladding requires to select with sandwich layer thickness of slab according to actual product）, during core material is put
Between, its outer stack is striden suddenly（1）The plied timber chosen, cladding fits with sandwich layer surface to be composite, and plied timber is slightly larger than
Composite plate blanks are taken out very by core material, then sealing welding plied timber, and reserved exhaust tube by high vacuum diffusion pump unit
It is empty to 1x10-2~1 x10-3After Pa, and pressurize 2 hours, exhaust tube is sealed, vacuum composite plate base is obtained；
Step（3）, rolling：By step（2）In obtained vacuum composite plate base feeding heating furnace, conventional heating, heating temperature are carried out
Spend for 1200 DEG C~1250 DEG C, mill milling is sent into afterwards, start rolling temperature is 1100 DEG C~1150 DEG C, 900 DEG C of finishing temperature~
950 DEG C, accumulation rolling reduction ratio is more than 75%, and then air cooling carries out cold rolling, cold-rolled products specification to composite plate；
Step（4）Annealing：By step（3）Cold rolling composite plate annealing, 800~840 DEG C of annealing times 30 of annealing temperature is made
~60s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710651631.3A CN107309285A (en) | 2017-08-02 | 2017-08-02 | A kind of method for rolling automobile steel composite board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710651631.3A CN107309285A (en) | 2017-08-02 | 2017-08-02 | A kind of method for rolling automobile steel composite board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107309285A true CN107309285A (en) | 2017-11-03 |
Family
ID=60170599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710651631.3A Pending CN107309285A (en) | 2017-08-02 | 2017-08-02 | A kind of method for rolling automobile steel composite board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107309285A (en) |
-
2017
- 2017-08-02 CN CN201710651631.3A patent/CN107309285A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20171103 |