Steel aluminum-5 plumbago composite board casting, rolling and compositing method

Abstract

The invention discloses a steel-aluminium-5 graphite clad plate casting and rolling composite method which belongs to the steel-aluminium and graphite clad plate semisolid casting and rolling composite method research field. A semisolid cassting and rolling composite clad plate formed by a 08Al steel plate of a thickness of one point two millimeter and an aluminium-5 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 thirty-two DEG C for steel plate, an solidoid ratio of thirty-five point three percent of aluminium-5 graphite semisolid sizing agent, a diffusion time of twenty-one seconds between a compound tip inner steel plate and an aluminium-5 graphite cladding; and then a steel-aluminium-5 graphite semisolid casting and rolling clad plate can be got with an interface shear strength of sixty-nine point two MPa. Compared with sixty-seven 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 Cast-Rolling Composite Method and Device", expounded the casting-rolling composite method of steel-aluminum-5 graphite semi-solid composite plate, that is, using steel plate and aluminum-5 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-5-graphite composite plate with an interfacial shear strength of 67 MPa. [0003] For the steel-aluminum-5 graphite semi-solid composite plate used to p...

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Problems solved by technology

[0003] For the steel-aluminum-5 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-mentioned CN1915547 patent does not disclose the steel-aluminum-5 graphite that can obtain the maximum interface shear strength. 5 Cast-rolling compound method of graphite semi-solid composite plate