CN102021287B - Uniform post-processing method of steel/zinc 3.5 boron nitride semi-solid composite board - Google Patents
Uniform post-processing method of steel/zinc 3.5 boron nitride semi-solid composite board Download PDFInfo
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- CN102021287B CN102021287B CN2010106139857A CN201010613985A CN102021287B CN 102021287 B CN102021287 B CN 102021287B CN 2010106139857 A CN2010106139857 A CN 2010106139857A CN 201010613985 A CN201010613985 A CN 201010613985A CN 102021287 B CN102021287 B CN 102021287B
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Abstract
The invention discloses a uniform post-processing method of a steel/zinc 3.5 boron nitride semi-solid composite board, which belongs to the field of room-temperature rolling post-processing research of interface shearing strength of the steel/zinc 3.5 boron nitride semi-solid composite board. In the invention, the steel/zinc 3.5 boron nitride semi-solid composite board formed by a 08Al steel plate with thickness of 1.2 mm and a zinc 3.5 boron nitride coating with thickness of 3.0 mm is subject to twice rolling on a precise rolling mill at the room temperature under a total reduction rate of 0.7%, wherein the reduction rate ratio of the primary rolling to the secondary rolling is (1:2)-(2:1), and the transverse interface shearing strength difference of the composite board can be reduced to less than1.8 MPa.
Description
Technical field
The present invention relates to a kind of rolling post-treating method of interface shear strength room temperature of steel zinc 3.5 SP 1 semisolid-state clad plates.
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 zinc 3.5 SP 1 semisolid-state clad plates are to adopt semisolid-state clad plate that solid-state steel plate and zinc 3.5 SP 1 semi solid slurries are composited, that be made up of thick 08Al steel plate of 1.2mm and the thick zinc 3.5 SP 1 coating of 3.0mm; When adopting the CN101117696A patented process to be rolled aftertreatment; At ideal draft comparatively is under 0.7% condition; Because zinc 3.5 SP 1 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 zinc 3.5 SP 1 semisolid-state clad plates, 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 zinc 3.5 SP 1 semisolid-state clad plate 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 zinc rolling post-treating methods of 3.5 SP 1 semisolid-state clad plate room temperatures " transverse interface shearing resistance difference is big "; A kind of post-treating method that can improve steel zinc 3.5 SP 1 semisolid-state clad plate 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 zinc 3.5 SP 1 semisolid-state clad plates; 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: 2~2: 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 zinc 3.5 SP 1 semisolid-state clad plates are carried out the rolling processing of room temperature; Can composition board transverse interface shearing resistance difference be reduced in the 1.8MPa, reduce by 33% 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 zinc 3.5 SP 1 semisolid-state clad plates; At room temperature; On finishing rolling mill; To the steel zinc 3.5 SP 1 semisolid-state clad plates that constitute by thick 08Al steel plate of 1.2mm and the thick zinc 3.5 SP 1 coating of 3.0mm; Carry out two passages, total draft and be 0.7% rolling aftertreatment, the big-difference of the zinc 3.5 SP 1 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 zinc 3.5 SP 1 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 zinc 3.5 SP 1 semisolid-state clad plate interface shear strengths.
Embodiment one, to steel zinc 3.5 SP 1 semisolid-state clad plates, 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 1.8MPa in composition board interface shear strength difference transversely.
Embodiment two, to steel zinc 3.5 SP 1 semisolid-state clad plates, 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 1.7MPa in composition board interface shear strength difference transversely.
Embodiment three, to steel zinc 3.5 SP 1 semisolid-state clad plates, 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 four, to steel zinc 3.5 SP 1 semisolid-state clad plates, the percentage pass reduction ratio of carrying out first passage and second passage is 3: 2 the rolling aftertreatment of two passage room temperatures, is 1.6MPa in composition board interface shear strength difference transversely.
Embodiment five, to steel zinc 3.5 SP 1 semisolid-state clad plates, 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 zinc 3.5 SP 1 semisolid-state clad plates that constitute by thick 08Al steel plate of 1.2mm and the thick zinc 3.5 SP 1 coating of 3.0mm; The percentage pass reduction ratio of carrying out total draft and be 0.7%, first passage and second passage is 1: 2~2: 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 steel zinc 3.5 SP 1 semisolid-state clad plates; At room temperature; On finishing rolling mill, the steel zinc 3.5 SP 1 semisolid-state clad plates that are made up of thick 08Al steel plate of 1.2mm and the thick zinc 3.5 SP 1 coating of 3.0mm are rolled aftertreatment, it is characterized in that; To steel zinc 3.5 SP 1 semisolid-state clad plates, carry out total draft and be percentage pass reduction ratio 0.7%, first passage and second passage and be 1: 2~2: 1 the rolling processing of two passages.
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CN2010106139857A CN102021287B (en) | 2010-12-30 | 2010-12-30 | Uniform post-processing method of steel/zinc 3.5 boron nitride semi-solid composite board |
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CN2010106139857A CN102021287B (en) | 2010-12-30 | 2010-12-30 | Uniform post-processing method of steel/zinc 3.5 boron nitride semi-solid composite board |
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CN102021287A CN102021287A (en) | 2011-04-20 |
CN102021287B true CN102021287B (en) | 2012-04-25 |
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CN2010106139857A Expired - Fee Related CN102021287B (en) | 2010-12-30 | 2010-12-30 | Uniform post-processing method of steel/zinc 3.5 boron nitride semi-solid composite board |
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Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN101117696A (en) * | 2007-09-05 | 2008-02-06 | 北京交通大学 | Post-treating method for steel-back aluminium-based semisolid-state clad plate |
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Publication number | Priority date | Publication date | Assignee | Title |
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CN101117696A (en) * | 2007-09-05 | 2008-02-06 | 北京交通大学 | Post-treating method for steel-back aluminium-based semisolid-state clad plate |
Non-Patent Citations (1)
Title |
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宋仁伯等.半固态钢铁材料轧制产品的力学特性.《金属学报》.2002,第38卷(第2期),153-156. * |
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