CN102021291A - Uniform after-treatment method for steel/magnesium bronze 3-3.5 boron nitride semisolid composite board - Google Patents
Uniform after-treatment method for steel/magnesium bronze 3-3.5 boron nitride semisolid composite board Download PDFInfo
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- CN102021291A CN102021291A CN 201010614951 CN201010614951A CN102021291A CN 102021291 A CN102021291 A CN 102021291A CN 201010614951 CN201010614951 CN 201010614951 CN 201010614951 A CN201010614951 A CN 201010614951A CN 102021291 A CN102021291 A CN 102021291A
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Abstract
The invention discloses a uniform after-treatment method for a steel/magnesium bronze 3-3.5 boron nitride semisolid composite board, belonging to the field of room-temperature rolling after-treatment of interface shear strength of steel/magnesium bronze 3-3.5 boron nitride semisolid composite boards. In the method, a steel/magnesium bronze 3-3.5 boron nitride semisolid composite board, which is composed of a 1.2mm-thick 08Al steel plate and a 3.0mm-thick magnesium bronze 3-3.5 boron nitride coating, is rolled on a finishing rolling mill by two passes at room temperature, wherein the total down rate is 1.0%, and the pass down rate ratio of a first pass to a second pass is 1:3.5-1:1.5, so that the shear strength difference of the transverse interface of the composite board is reduced within 1.8MPa.
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 boron nitride semisolid-state clad plate.
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 boron nitride semisolid-state clad plate adopts solid-state steel plate and magnesium bronze 3-3.5 boron nitride semi solid slurry to be composited, the semisolid-state clad plate that constitutes by thick 08Al steel plate of 1.2mm and the thick magnesium bronze 3-3.5 boron nitride coating of 3.0mm, the magnesium content of magnesium bronze 3-3.5 boron nitride coating is 2.9～3.1wt%, the quantity of nitrogen boron particles is 3.5wt%, when adopting the CN101117696A patented method to be rolled aftertreatment, at ideal draft comparatively is under 1.0% condition, because magnesium bronze 3-3.5 boron nitride coating is at composition board deflection skewness transversely, cause the difference between the composition board interface shear strength transversely can be up to 2.9MPa.
For steel magnesium bronze 3-3.5 boron nitride semisolid-state clad plate, 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 boron nitride semisolid-state clad plate transverse interface shearing resistance is the smaller the better.
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 boron nitride semisolid-state clad plate room temperature " transverse interface shearing resistance difference is big ", a kind of post-treating method that can improve steel magnesium bronze 3-3.5 boron nitride semisolid-state clad plate 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 boron nitride semisolid-state clad plate, at room temperature, on finishing rolling mill, carry out total draft and be percentage pass reduction ratio 1.0%, first passage and second passage and be 1: 3.5～1: 1.5 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, the difference that causes 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 one-pass roller can 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 the optimum combination by 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 boron nitride semisolid-state clad plate is carried out the rolling processing of room temperature, composition board transverse interface shearing resistance difference can be reduced in the 1.8MPa, reduce by 38% at least than adopting the CN101117696A patented method to carry out the 2.9MPa that the rolling processing of room temperature obtains.
Embodiment
A kind of even post-treating method of steel magnesium bronze 3-3.5 boron nitride semisolid-state clad plate, at room temperature, on finishing rolling mill, to the steel magnesium bronze 3-3.5 boron nitride semisolid-state clad plate that constitutes by thick 08Al steel plate of 1.2mm and the thick magnesium bronze 3-3.5 boron nitride coating of 3.0mm, carry out two passages, total draft is 1.0% rolling aftertreatment, the big-difference of the magnesium bronze 3-3.5 boron nitride coating transverse deformation amount that the rolling aftertreatment of single pass heavy reduction rate is produced, decomposition and coordination are the little difference of the magnesium bronze 3-3.5 boron nitride coating transverse deformation amount of the rolling aftertreatment generation 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 boron nitride semisolid-state clad plate interface shear strength.
Embodiment one, to steel magnesium bronze 3-3.5 boron nitride semisolid-state clad plate, the percentage pass reduction ratio of carrying out first passage and second passage is 1: 3.5 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 boron nitride semisolid-state clad plate, 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 1.7MPa in composition board interface shear strength difference transversely.
Embodiment three, to steel magnesium bronze 3-3.5 boron nitride semisolid-state clad plate, 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 1.6MPa in composition board interface shear strength difference transversely.
Embodiment four, to steel magnesium bronze 3-3.5 boron nitride semisolid-state clad plate, 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 1.7MPa in composition board interface shear strength difference transversely.
Embodiment five, to steel magnesium bronze 3-3.5 boron nitride semisolid-state clad plate, 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 1.8MPa in composition board interface shear strength difference transversely.
As seen, to the steel magnesium bronze 3-3.5 boron nitride semisolid-state clad plate that constitutes by thick 08Al steel plate of 1.2mm and the thick magnesium bronze 3-3.5 boron nitride coating of 3.0mm, the percentage pass reduction ratio of carrying out total draft and be 1.0%, first passage and second passage is 1: 3.5～1: 1.5 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 boron nitride semisolid-state clad plate, at room temperature, on finishing rolling mill, the steel magnesium bronze 3-3.5 boron nitride semisolid-state clad plate that is made of thick 08Al steel plate of 1.2mm and the thick magnesium bronze 3-3.5 boron nitride coating of 3.0mm is rolled aftertreatment, it is characterized in that, to steel magnesium bronze 3-3.5 boron nitride semisolid-state clad plate, carry out total draft and be percentage pass reduction ratio 1.0%, first passage and second passage and be 1: 3.5～1: 1.5 the rolling processing of two passages.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010614951XA CN102021291B (en) | 2010-12-30 | 2010-12-30 | Uniform after-treatment method for steel/magnesium bronze 3-3.5 boron nitride semisolid composite board |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010614951XA CN102021291B (en) | 2010-12-30 | 2010-12-30 | Uniform after-treatment method for steel/magnesium bronze 3-3.5 boron nitride semisolid composite board |
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| Publication Number | Publication Date |
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| CN102021291A true CN102021291A (en) | 2011-04-20 |
| CN102021291B CN102021291B (en) | 2012-05-23 |
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| CN201010614951XA Expired - Fee Related CN102021291B (en) | 2010-12-30 | 2010-12-30 | Uniform after-treatment method for steel/magnesium bronze 3-3.5 boron nitride semisolid composite board |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1915546A (en) * | 2006-09-01 | 2007-02-21 | 北京交通大学 | Composite method for casting and rolling composite plate of steel, cupper, and graphite |
| 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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- 2010-12-30 CN CN201010614951XA patent/CN102021291B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1915546A (en) * | 2006-09-01 | 2007-02-21 | 北京交通大学 | Composite method for casting and rolling composite plate of steel, cupper, and graphite |
| 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 |
|---|
| 《金属学报》 20020228 宋仁伯等 半固态钢铁材料轧制产品的力学特性 第153-156页 1 第38卷, 第2期 2 * |
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| CN102021291B (en) | 2012-05-23 |
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Granted publication date: 20120523 Termination date: 20121230 |