CN102010949B - Homogenization post processing method for steel aluminum 9 graphite semisolid composite board - Google Patents
Homogenization post processing method for steel aluminum 9 graphite semisolid composite board Download PDFInfo
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- CN102010949B CN102010949B CN2010106137353A CN201010613735A CN102010949B CN 102010949 B CN102010949 B CN 102010949B CN 2010106137353 A CN2010106137353 A CN 2010106137353A CN 201010613735 A CN201010613735 A CN 201010613735A CN 102010949 B CN102010949 B CN 102010949B
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Abstract
The invention discloses a homogenization post processing method for a steel aluminum 9 graphite semisolid composite board, belonging to the field of research on rolling post processing of the steel aluminum 9 graphite semisolid composite board at room temperature for interface shear strength . In the method provided by the invention, two-pass rolling processes are carried out on the aluminum 9 graphite semisolid composite board formed by a 08A1 steel plate the thickness of which is 1.2mm and an aluminum 9 graphite layer the thickness of which is 1.0mm by a rolling mill at room temperature, wherein the total down rate is 0.7% and the down rate ratio of the primary rolling process to the secondary rolling process is (1:2.5)-(2:1), and the transverse interface shear strength difference of the composite board is reduced below 1.7MPa.
Description
Technical field
The present invention relates to a kind of rolling post-treating method of interface shear strength room temperature of steel aluminium 9 graphite semi-solid composition boards.
Background technology
Publication number: CN101117696A, denomination of invention: on " a kind of post-treating method of steel-back aluminium-based semisolid-state clad plate ", set forth the rolling post-treating method of room temperature of steel-back aluminium-based semisolid-state clad plate; Promptly; At room temperature, on finishing rolling mill, to steel-back aluminium-based semisolid-state clad plate; Be rolled aftertreatment; Utilize the difference of aluminium base coating that rolling processing produces and steel backing deflection to remedy the difference of aluminium base coating and steel backing shrinkage in the composite solidification process of cooling, and then reduce composition board interface additional stress, the composition board interface shear strength is improved.This method technology is simple, composition board interface shear strength value improves bigger; But; Because this method is carrying out there is aluminium base coating deflection non-uniform phenomenon when one-pass roller is handled; Therefore cause the uneven distribution of composition board interface shear strength usually, can be in composition board interface shear strength difference transversely up to 2.6～3.2MPa.
Steel aluminium 9 graphite semi-solid composition boards are to adopt semisolid-state clad plate that solid-state steel plate and aluminium 9 graphite semi-solid slurries are composited, that be made up of thick 08Al steel plate of 1.2mm and the thick aluminium 9 graphite coating of 1.0mm; When adopting the CN101117696A patented process to be rolled aftertreatment; At ideal draft comparatively is under 0.7% condition; Because aluminium 9 graphite coating are at composition board deflection skewness transversely, cause the difference between the composition board interface shear strength transversely can be up to 2.7MPa.
For steel aluminium 9 graphite semi-solid composition boards, the difference of transverse interface shearing resistance is more little, and work reliability is high more, and range of application is wide more, so the difference of steel aluminium 9 graphite semi-solid composition board transverse interface shearing resistances is more little good more.
Summary of the invention
Technical problem to be solved by this invention is; Overcome the deficiency of the existing steel aluminium rolling post-treating methods of 9 graphite semi-solid composition board room temperatures " transverse interface shearing resistance difference is big "; A kind of post-treating method that can improve steel aluminium 9 graphite semi-solid composition board transverse interface shearing resistance distributing homogeneities is provided, further dwindles the difference of composition board transverse interface shearing resistance.
The technical solution adopted for the present invention to solve the technical problems is: to steel aluminium 9 graphite semi-solid composition boards; At room temperature; On finishing rolling mill, carry out total draft and be percentage pass reduction ratio 0.7%, first passage and second passage and be 1: 2.5～2: 1 the rolling processing of two passages.
The invention has the beneficial effects as follows: for the rolling processing of composition board room temperature; Because roller is jumped, the existence of the unequal factor of matrix; Transversely produce nonaffine deformation inevitably in composition board, cause the difference of composition board transverse interface shearing resistance, and draft is big more; Distortion transversely is inhomogeneous more, and the difference of composition board transverse interface shearing resistance is big more.If nonaffine deformation transversely with the rolling generation of single pass heavy reduction rate; Decompose in the middle of the little draft distortion of multi-pass; Then can one-pass roller be handled the big-difference of the transverse deformation amount that produces; Be decomposed into the little difference of the transverse deformation amount of multi-pass, and pass through the optimum combination of each percentage pass reduction, can also further coordinate the difference of transverse deformation amount.The present invention utilizes the optimum combination of the percentage pass reduction of first passage and second passage further to reduce and coordinated the difference of the transverse deformation amount of the rolling processing of room temperature, thereby has reached the purpose that reduces composition board transverse interface shearing resistance difference.Utilize the present invention; Steel aluminium 9 graphite semi-solid composition boards are carried out the rolling processing of room temperature; Can composition board transverse interface shearing resistance difference be reduced in the 1.7MPa, reduce by 37% at least than adopting the CN101117696A patented process to carry out the 2.7MPa that the rolling processing of room temperature obtains.
Embodiment
A kind of even post-treating method of steel aluminium 9 graphite semi-solid composition boards; At room temperature; On finishing rolling mill; To the steel aluminium 9 graphite semi-solid composition boards that constitute by thick 08Al steel plate of 1.2mm and the thick aluminium 9 graphite coating of 1.0mm; Carry out two passages, total draft and be 0.7% rolling aftertreatment, the big-difference of the aluminium 9 graphite coating transverse deformation amounts that the rolling aftertreatment of single pass heavy reduction rate is produced, decomposing and coordinating is the little difference of the aluminium 9 graphite coating transverse deformation amounts that produce of the rolling aftertreatment of the little draft of two passages; Thereby further reduced composition board transverse interface shearing resistance difference, improved the distributing homogeneity of steel aluminium 9 graphite semi-solid composition board interface shear strengths.
Embodiment one, to steel aluminium 9 graphite semi-solid composition boards, the percentage pass reduction ratio of carrying out first passage and second passage is 1: 2.5 the rolling aftertreatment of two passage room temperatures, is 1.7MPa in composition board interface shear strength difference transversely.
Embodiment two, to steel aluminium 9 graphite semi-solid composition boards, the percentage pass reduction ratio of carrying out first passage and second passage is 1: 2 the rolling aftertreatment of two passage room temperatures, is 1.6MPa in composition board interface shear strength difference transversely.
Embodiment three, to steel aluminium 9 graphite semi-solid composition boards, the percentage pass reduction ratio of carrying out first passage and second passage is 1: 1.5 the rolling aftertreatment of two passage room temperatures, is 1.5MPa in composition board interface shear strength difference transversely.
Embodiment four, to steel aluminium 9 graphite semi-solid composition boards, the percentage pass reduction ratio of carrying out first passage and second passage is 1: 1 the rolling aftertreatment of two passage room temperatures, is 1.6MPa in composition board interface shear strength difference transversely.
Embodiment five, to steel aluminium 9 graphite semi-solid composition boards, the percentage pass reduction ratio of carrying out first passage and second passage is 2: 1 the rolling aftertreatment of two passage room temperatures, is 1.7MPa in composition board interface shear strength difference transversely.
It is thus clear that; To the steel aluminium 9 graphite semi-solid composition boards that constitute by thick 08Al steel plate of 1.2mm and the thick aluminium 9 graphite coating of 1.0mm; The percentage pass reduction ratio of carrying out total draft and be 0.7%, first passage and second passage is 1: 2.5～2: 1 the rolling aftertreatment of two passage room temperatures, and composition board interface shear strength difference transversely is reduced in the 1.7MPa.
Claims (1)
1. the even post-treating method of steel aluminium 9 graphite semi-solid composition boards; At room temperature; On finishing rolling mill, the steel aluminium 9 graphite semi-solid composition boards that are made up of thick 08Al steel plate of 1.2mm and the thick aluminium 9 graphite coating of 1.0mm are rolled aftertreatment, it is characterized in that; To steel aluminium 9 graphite semi-solid composition boards, carry out total draft and be percentage pass reduction ratio 0.7%, first passage and second passage and be 1: 2.5～2: 1 the rolling processing of two passages.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106137353A CN102010949B (en) | 2010-12-30 | 2010-12-30 | Homogenization post processing method for steel aluminum 9 graphite semisolid composite board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106137353A CN102010949B (en) | 2010-12-30 | 2010-12-30 | Homogenization post processing method for steel aluminum 9 graphite semisolid composite board |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102010949A CN102010949A (en) | 2011-04-13 |
| CN102010949B true CN102010949B (en) | 2012-04-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010106137353A Expired - Fee Related CN102010949B (en) | 2010-12-30 | 2010-12-30 | Homogenization post processing method for steel aluminum 9 graphite semisolid composite board |
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Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100392117C (en) * | 2006-09-12 | 2008-06-04 | 北京交通大学 | Method for reducing interface residual stress of steel, copper, graphite composite plate |
| CN100535172C (en) * | 2007-09-05 | 2009-09-02 | 北京交通大学 | Post-treating method for steel-back aluminium-based semisolid-state clad plate |
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| CN102010949A (en) | 2011-04-13 |
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Granted publication date: 20120425 Termination date: 20121230 |