Steel aluminum-9 plumbago composite board casting, rolling and compositing method

A clad plate and graphite technology, applied in metal rolling, temperature control and other directions, can solve the problem of no public steel-aluminum-9 graphite semi-solid clad plate casting and rolling compound method, etc., and achieve the effect of improving the interfacial shear strength

Inactive Publication Date: 2008-02-06
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] For the steel-aluminum-9 graphite semi-solid composite plate used to prepare the bearing bush, it mainly bears the shear action, and the greater the interface shear strength, the better. The above-m

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0009] The preheating temperature of the steel plate is 480°C, the solid phase ratio of the Al-9 graphite semi-solid slurry is 40%, and the diffusion time between the steel plate and the Al-9 graphite coating in the composite gate is 30s, the interface shear strength is obtained as 58.7MPa steel-aluminum-9 graphite composite plate.

Embodiment approach 2

[0011] The preheating temperature of the steel plate is 508°C, the solid phase rate of the Al-9 graphite semi-solid slurry is 30.1%, and the diffusion time between the steel plate and the Al-9 graphite coating in the composite gate is 27s, the interface shear strength is obtained as 71.4MPa steel-aluminum-9 graphite composite plate.

Embodiment approach 3

[0013] The preheating temperature of the steel plate is 520°C, the solid phase ratio of the Al-9 graphite semi-solid slurry is 35%, and the diffusion time between the steel plate and the Al-9 graphite coating in the composite gate is 25s, the interface shear strength is obtained as 70.1MPa steel-aluminum-9 graphite composite plate.

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Abstract

The invention discloses a steel-aluminium-9 graphite clad plate casting and rolling composite method which belongs to the steel-aluminium and graphite clad plate semisolid casting and rolling composite research field. A semisolid casting and rolling composite clad plate formed by a 08Al steel plate of a thickness of one point two millimeter and an aluminium-9 graphite cladding of a thickness of one point three millimeter is casted and rolled compositely under conditions of a preheating temperature of five hundred and eight DEG C for the steel plate, an solidoid ratio of thirty point one percent for aluminium-9 graphite semisolid sizing agent, a diffusion time of twenty-seven seconds between a compound tip inner steel plate and an aluminium-9 graphite cladding; and then a steel-aluminium-9 graphite semisolid casting composite clad plate can be got with an interface shear strength of seventy-one point four MPa. Compared with sixty-nine MPa which is the interface shear strength of the clad plate of a CN1915547 patent, the invention has obvious improvement in terms of the interface shear strength.

Description

technical field [0001] The invention relates to a semi-solid casting-rolling composite method for a steel-aluminum-graphite composite plate. Background technique [0002] Publication No.: CN1915547, Invention Name: "A Steel-Aluminum-Graphite Composite Plate Casting-rolling Composite Method and Device", described the casting-rolling composite method of steel-aluminum-9 graphite semi-solid composite plate, that is, using steel plate and aluminum-9 Graphite semi-solid slurry is used for casting-rolling composite forming. First, the diffusion between the steel plate and aluminum-graphite semi-solid slurry is completed in the composite gate to form a composite interface. After cooling in the cooling chamber and rolling mill rolls, the steel-aluminum-graphite composite is formed. Plate and tape. The method can form a steel-aluminum-9-graphite composite plate with an interfacial shear strength of 69MPa. [0003] For the steel-aluminum-9 graphite semi-solid composite plate used to...

Claims

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Application Information

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IPC IPC(8): B21B1/46B21B1/38B21B37/74B22D19/16
Inventor 张鹏杜云慧刘汉武张君张新
Owner BEIJING JIAOTONG UNIV
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