CN102021290B - Homogeneous post-processing method of steel magnesium bronze 3-3.5 graphite semi-solid composite plate - Google Patents
Homogeneous post-processing method of steel magnesium bronze 3-3.5 graphite semi-solid composite plate Download PDFInfo
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- CN102021290B CN102021290B CN2010106149454A CN201010614945A CN102021290B CN 102021290 B CN102021290 B CN 102021290B CN 2010106149454 A CN2010106149454 A CN 2010106149454A CN 201010614945 A CN201010614945 A CN 201010614945A CN 102021290 B CN102021290 B CN 102021290B
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Abstract
The invention discloses a homogeneous post-processing method of a steel magnesium bronze 3-3.5 graphite semi-solid composite plate, belonging to the post-processing research field of the interface shear strength after the steel magnesium bronze 3-3.5 graphite semi-solid composite plate is rolled at room temperature. The method comprises the step of carrying out two passes of rolling processing on the steel magnesium bronze 3-3.5 graphite semi-solid composite plate by a precision rolling machine at the room temperature to reduce the transverse interface shear strength difference of the composite plate to be less than 1.8 MPa, wherein the steel magnesium bronze 3-3.5 graphite semi-solid composite plate is composed of a 08 A1 steel plate with a thickness of 1.2 mm, magnesium bronze with a thickness of 3.0 mm, and a 3-3.5 graphite coating layer; the total reduction is 1.1%, and the pass reduction proportion of the first pass to the second pass is 1:3-1:1.
Description
Technical field
The present invention relates to a kind of rolling post-treating method of interface shear strength room temperature of steel magnesium bronze 3-3.5 graphite semi-solid composition board.
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 magnesium bronze 3-3.5 graphite semi-solid composition board is to adopt semisolid-state clad plate that solid-state steel plate and magnesium bronze 3-3.5 graphite semi-solid slurry are composited, that be made up of thick 08Al steel plate of 1.2mm and the thick magnesium bronze 3-3.5 graphite coating of 3.0mm; The magnesium content of magnesium bronze 3-3.5 graphite coating is that 2.9～3.1wt%, graphitiferous particulate quantity are 3.5wt%; When adopting the CN101117696A patented process to be rolled aftertreatment; At ideal draft comparatively is under 1.1% condition; Because magnesium bronze 3-3.5 graphite coating is at composition board deflection skewness transversely, cause the difference between the composition board interface shear strength transversely can be up to 3.0MPa.
For steel magnesium bronze 3-3.5 graphite semi-solid composition board, 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 magnesium bronze 3-3.5 graphite semi-solid composition board transverse interface shearing resistance is more little good more.
Summary of the invention
Technical problem to be solved by this invention is; Overcome the deficiency of the existing rolling post-treating method of steel magnesium bronze 3-3.5 graphite semi-solid composition board room temperature " transverse interface shearing resistance difference is big "; A kind of post-treating method that can improve steel magnesium bronze 3-3.5 graphite semi-solid composition board transverse interface shearing resistance distributing homogeneity 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 magnesium bronze 3-3.5 graphite semi-solid composition board; At room temperature; On finishing rolling mill, carry out total draft and be percentage pass reduction ratio 1.1%, first passage and second passage and be 1: 3～1: 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 magnesium bronze 3-3.5 graphite semi-solid composition board is carried out the rolling processing of room temperature; Can composition board transverse interface shearing resistance difference be reduced in the 1.8MPa, reduce by 40% at least than adopting the CN101117696A patented process to carry out the 3.0MPa that the rolling processing of room temperature obtains.
Embodiment
A kind of even post-treating method of steel magnesium bronze 3-3.5 graphite semi-solid composition board; At room temperature; On finishing rolling mill; To the steel magnesium bronze 3-3.5 graphite semi-solid composition board that constitutes by thick 08Al steel plate of 1.2mm and the thick magnesium bronze 3-3.5 graphite coating of 3.0mm; Carry out two passages, total draft and be 1.1% rolling aftertreatment, the big-difference of the magnesium bronze 3-3.5 graphite coating transverse deformation amount that the rolling aftertreatment of single pass heavy reduction rate is produced, decomposing and coordinating is the little difference of the magnesium bronze 3-3.5 graphite coating transverse deformation amount that produces 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 magnesium bronze 3-3.5 graphite semi-solid composition board interface shear strength.
Embodiment one, to steel magnesium bronze 3-3.5 graphite semi-solid composition board, the percentage pass reduction ratio of carrying out first passage and second passage is 1: 3 the rolling aftertreatment of two passage room temperatures, is 1.8MPa in composition board interface shear strength difference transversely.
Embodiment two, to steel magnesium bronze 3-3.5 graphite semi-solid composition board, 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 three, to steel magnesium bronze 3-3.5 graphite semi-solid composition board, 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 1.5MPa in composition board interface shear strength difference transversely.
Embodiment four, to steel magnesium bronze 3-3.5 graphite semi-solid composition board, 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 1.6MPa in composition board interface shear strength difference transversely.
Embodiment five, to steel magnesium bronze 3-3.5 graphite semi-solid composition board, 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 1.7MPa in composition board interface shear strength difference transversely.
It is thus clear that; To the steel magnesium bronze 3-3.5 graphite semi-solid composition board that constitutes by thick 08Al steel plate of 1.2mm and the thick magnesium bronze 3-3.5 graphite coating of 3.0mm; The percentage pass reduction ratio of carrying out total draft and be 1.1%, first passage and second passage is 1: 3～1: 1 the rolling aftertreatment of two passage room temperatures, and composition board interface shear strength difference transversely is reduced in the 1.8MPa.
Claims (1)
1. the even post-treating method of a steel magnesium bronze 3-3.5 graphite semi-solid composition board; At room temperature; On finishing rolling mill; Steel magnesium bronze 3-3.5 graphite semi-solid composition board to being made up of thick 08Al steel plate of 1.2mm and the thick magnesium bronze 3-3.5 graphite coating of 3.0mm is rolled aftertreatment; It is characterized in that,, carry out total draft and be percentage pass reduction ratio 1.1%, first passage and second passage and be 1: 3～1: 1 the rolling processing of two passages steel magnesium bronze 3-3.5 graphite semi-solid composition board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106149454A CN102021290B (en) | 2010-12-30 | 2010-12-30 | Homogeneous post-processing method of steel magnesium bronze 3-3.5 graphite semi-solid composite plate |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010106149454A CN102021290B (en) | 2010-12-30 | 2010-12-30 | Homogeneous post-processing method of steel magnesium bronze 3-3.5 graphite semi-solid composite plate |
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| Publication Number | Publication Date |
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| CN102021290A CN102021290A (en) | 2011-04-20 |
| CN102021290B true CN102021290B (en) | 2012-10-31 |
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| CN2010106149454A Expired - Fee Related CN102021290B (en) | 2010-12-30 | 2010-12-30 | Homogeneous post-processing method of steel magnesium bronze 3-3.5 graphite semi-solid composite plate |
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| US5651078A (en) * | 1994-07-18 | 1997-07-22 | Thomson Consumer Electronics, Inc. | Method and apparatus for reducing contouring in video compression |
| 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 |
| CN100553811C (en) * | 2008-03-24 | 2009-10-28 | 北京科技大学 | Semisolid Kelmet/bimetal copper-steel composite technique for rolling |
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Granted publication date: 20121031 Termination date: 20121230 |