Assembly device for steel-aluminum composite plate

Abstract

The utility model discloses an assembly device for a steel-aluminum composite plate, which comprises a vacuum box with a top cover, a heat-resistant crucible is arranged in the vacuum box, an electric heating coil is arranged in the heat-resistant crucible, and the electric heating coil is electrically connected with an adjustable medium-frequency power supply arranged outside the vacuum box; and the top cover of the vacuum box is also provided with an observation window. And the vacuum box is also connected with a vacuum pump. The device solves the problems that the physical and chemical property difference between a steel billet and an aluminum billet is great, and assembly cannot be achieved in a welding mode at present.

Description

TECHNICAL FIELD

[0001] The utility model relates to metal composite board rolling composite technical field, concretely relates to a kind of steel-aluminum composite board's group blank device. BACKGROUND

[0002] Metal composite board refers to the board of another kind of metal on one layer of metal, has reached the effect of saving resources, reducing cost under the premise of not reducing use effect (corrosion resistance, mechanical strength etc.). Composite method usually has explosion composite, explosion rolling composite, rolling composite etc.. The metal composite board of present generally is fixed connection by the way of rolling composite of metal aluminum plate and metal copper plate.

[0003] There are many kinds of metal composite board, for example, steel-aluminum composite board, copper-aluminum composite board etc., taking steel-aluminum composite board as an example, steel-aluminum composite board is mainly combined by adhering aluminum plate on both sides of steel plate through hot rolling, and the quality of steel-aluminum composite board mainly depends on the adhering strength of steel plate and aluminum plate, and the surface of steel plate and aluminum plate needs to be treated before the present steel-aluminum composite board is treated by hot rolling, so as to effectively guarantee the quality and effect of hot rolling.

[0004] The principle of hot rolling treatment is that when annealing temperature is high enough and time is long enough, new strain-free grains (recrystallization core) are generated in the fiber organization of deformed metal or alloy, the new grains grow continuously until the original deformed organization disappears completely, and the performance of metal or alloy also changes significantly, which is called recrystallization, wherein the temperature at which new grains begin to generate is called starting recrystallization temperature, and the temperature at which microstructure is completely occupied by new grains is called final recrystallization temperature, and the recrystallization temperature generally referred to is the arithmetic mean of starting recrystallization temperature and final recrystallization temperature, and the recrystallization temperature is mainly affected by alloy composition, deformation degree, original grain size, annealing temperature and other factors.

[0005] After many test tests and actual use, it is found that the adhering bonding force of aluminum plate and steel plate of the present steel-aluminum composite board is not high enough after hot rolling treatment, mainly because the thermal stability of aluminum plate is poor, resulting in insufficient adhering bonding force of steel-aluminum composite board. INVENTION CONTENTS

[0006] The utility model discloses a kind of steel-aluminum composite board's group blank device, to solve the problem that the physical and chemical property difference between current steel billet and aluminum billet is great, cannot be realized by the mode of welding Group blank.

[0007] To achieve the above object, the utility model adopts the following technical scheme:

[0008] A kind of steel-aluminum composite plate's group billet device, including vacuum tank with top cover, heat-resistant crucible is arranged in the vacuum tank, electric heating coil is arranged in heat-resistant crucible, electric heating coil is electrically connected with adjustable medium-frequency power supply being arranged in the outside of vacuum tank;Observation window is also arranged on the top cover of the vacuum tank.The vacuum tank is also connected with vacuum pump.

[0009] The utility model has the beneficial effects that:

[0010] The group billet device can adhere and fix steel plate and aluminum plate together to realize group billet, and then tightly combine steel and aluminum together by the large rolling force of rolling mill to produce steel-aluminum composite plate, so that the problem that the physical and chemical property difference between steel billet and aluminum billet is too large and cannot realize group billet by welding is solved. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 The utility model has the beneficial effects that:

[0012] In the drawing, 1-vacuum tank;2-electric heating coil;3-refractory sand;4-steel plate;5-aluminum plate;6-observation window;7-vacuum pump;8-adjustable medium-frequency power supply. DETAILED DESCRIPTION

[0013] The utility model will be further explained in connection with the drawings.

[0014] In the rolling composite production process of steel-aluminum composite plate, steel plate and aluminum plate need to be adhered and fixed together to realize group billet and prevent sliding during rolling.The conventional method is to fix two kinds of materials together by vacuum welding.In actual production process, due to the large melting point difference between steel and aluminum, group billet cannot be realized by welding.

[0015] Therefore, the utility model discloses a kind of steel-aluminum composite plate's group billet device, as shown in Figure 1 Including vacuum tank 1 with top cover, vacuum pump 7 is also connected to vacuum tank 1, heat-resistant crucible is centrally arranged in the inside of vacuum tank 1, electric heating coil 2 is arranged in heat-resistant crucible, electric heating coil 2 is electrically connected with adjustable medium-frequency power supply 8 being arranged in the outside of vacuum tank 1;Observation window 6 is also arranged on the top cover of vacuum tank 1.

[0016] Working process: open the top cover of vacuum box 1, put the aluminum plate and steel plate together into the electric heating coil 2 and close the vacuum box, polish and clean the steel aluminum contact surface in advance, prefill the refractory sand into the coil until the height is to the middle position of the coil, which ensures that the steel aluminum block is in the most dense position of the coil magnetic induction line; plus the magnetic permeability of iron is higher than that of aluminum, when the electric heating coil is powered on, the heating speed of iron is higher than that of aluminum, which ensures that the aluminum of the steel aluminum contact surface melts first, observe from the observation window at the top of the vacuum box, stop heating when the aluminum liquid seeps out of the steel aluminum contact surface, after the seeped aluminum liquid solidifies, the steel plate and the aluminum plate are fixed together to realize the assembly, and then the steel aluminum composite plate is obtained by large rolling force rolling.

Claims

1. A billet assembly device for steel-aluminum composite panels, characterized in that, The application relates to a vacuum box (1) with a top cover, wherein a heat-resistant crucible is arranged in the vacuum box (1), an electric heating coil (2) is arranged in the heat-resistant crucible, and the electric heating coil (2) is electrically connected with an adjustable medium-frequency power supply (8) arranged outside the vacuum box (1); and an observation window (6) is further arranged on the top cover of the vacuum box (1).

2. The steel-aluminum composite sheet assembling apparatus according to claim 1, wherein A vacuum pump (7) is further connected to the vacuum box (1).

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