CN102703776A - Aluminum alloy substrate for light-emitting diode (LED) television and production method for aluminum alloy substrate - Google Patents

Abstract

The invention relates to an aluminum alloy substrate for a light-emitting diode (LED) television and a production method for the aluminum alloy substrate. The substrate comprises the following components in percentage by mass: 0.20 to 0.50 percent of Si, 0.30 to 0.70 percent of Fe, less than or equal to 0.25 percent of Cu, 0.8 to 1.0 percent of Mn, 1.10 to 1.25 percent of Mg, 0.12 to 0.30 percent of Cr, less than or equal to 0.25 percent of Ti, less than 0.10 percent of Zn and the balance of Al. According to the method, 3104 alloy which is relatively low in production cost is selected for producing the substrate, so that the problems that an aluminum alloy substrate which is made of 5052 alloy and is used for televisions is easy to crack when punched and is high in purchasing cost are solved.

Description

LED used as television aluminum alloy base material and working method thereof

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Technical field:

The present invention provides a kind of LED used as television aluminum alloy base material and working method thereof.

Background technology:

Flat panel TV development in recent years is swift and violent, and market is higher to the degree of recognition of LED TV, and the market requirement is bigger, and only 1 year LED of LG Corp of South Korea just reaches 120,000 tons with the demand of aluminium backboard, shows domestic annual requirement and reaches 7 ~ 80,000 tons, and be growing trend.The aluminium backboard plays a part fixing each element, plays heat radiation and supporting role, promptly requires it to have good heat-conducting and certain intensity, and has good deep drawability, to satisfy the requirement of components and parts layout and installation on the backboard.

Recently general 5052 duraluminums that adopt of the LED televisor aluminium backboard that occurs, it has proper intensity, good performance of heat dissipation and processability.But the 5052 aluminum alloy materials ubiquity unit elongation of manufacturing at present are on the low side, punching out is easy to crack, problems such as purchase cost height.

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Summary of the invention:

The object of the present invention is to provide a kind of LED used as television aluminum alloy base material, this LED used as television aluminum alloy base material stable mechanical property, plate shape good planeness, production cost is low.

LED used as television aluminum alloy base material of the present invention is characterized in that: this base material is 0.20% ~ 0.50% by metal mass percent Si, and Fe is 0.30 ~ 0.70%; Cu≤0.25%; Mn is 0.80 ~ 1.0%, and Mg is 1. 10% ~ 1.25 %, and Cr is 0. 12% ~ 0. 30 %; Ti≤0.25%, Zn 0. 10% with surplus be the duraluminum of Al.

Another object of the present invention is to provide a kind of LED used as television aluminum alloy base material working method, and the working method of this aluminum alloy base material is easy, helps lowering production cost.

The working method of LED used as television aluminum alloy base material of the present invention is characterized in that: its step is following,

A, be 0.20% ~ 0.50% by metal mass percent Si, Fe is 0.30 ~ 0.70%, Cu≤0.25%; Mn is 0.80 ~ 1.0%, and Mg is 1. 10% ~ 1.25 %, and Cr is 0. 12% ~ 0. 30 %; Ti≤0.25%; Zn 0. 10% with surplus be that Al prepares aluminium alloy stock, aluminium alloy stock is mixed the back under 700 ℃ ~ 740 ℃ high temperature, carries out melting, make melt obtain uniform distribution; B, melt is cast under 680 ~ 730 ℃ temperature, obtained the hexagon ingot casting; C, ingot casting is incubated 6 ~ 10 hours under 560 ℃ ~ 610 ℃ temperature homogenizing are handled, and optimize the ingot casting interior tissue; D, ingot casting is hot-rolled down to the hot rolled coil that thickness is 3.0 ~ 6.5mm; E, hot rolled coil is cold-rolled to the duraluminum finished product volume that thickness is 1.0 ~ 1.5mm; F, finished product is twisted under the protection of inert gas, in box-type furnace under 300 ℃ ~ 360 ℃ (metal temperature) conditions, 1 ~ 5 hour mode of insulation carries out finished products, carries out air-cooled cooling in the back of coming out of the stove with 30 ℃ ~ 60 ℃/hour speed again; Duraluminum finished product after g, the annealing lists at the stretch bending-straightening machine machine, and the unit elongation of use 0% ~ 1.0% carries out stretch-bend leveller to be handled, to obtain the suitable LED used as television aluminum alloy base material of ys.

The present invention selects for use 3104 lower relatively alloy production of production cost to make base material, and it has solved 5052 alloys and has processed the problem that the punching out of used as television aluminum alloy base material is easy to crack, purchase cost is high.

Embodiment:

LED used as television aluminum alloy base material of the present invention, this base material is 0.20% ~ 0.50% by metal mass percent Si, and Fe is 0.30 ~ 0.70%, and Cu≤0.25%, Mn are 0.80 ~ 1.0%, and Mg is 1. 10% ~ 1.25 %, Cr is 0. 12% ~ 0. 30 %, Ti≤0.25%, Zn<0. 10% with surplus be the duraluminum of Al.

Embodiment one, LED used as television aluminum alloy base material, this base material is 0.20% by metal mass percent Si, Fe is 0.70%, Cu is 0.25%, Mn is 0.80%, Mg is that 1. 10%, Cr are that 0. 12%%, Ti is 0.25%, Zn be 0. 09% with surplus be the duraluminum of Al.

Embodiment two, LED used as television aluminum alloy base material, this base material is 0.50% by metal mass percent Si, Fe is 0.70%, Cu is 0.25%, Mn is 1.0%, Mg is 1.25 %, Cr is 0. 30 %, Ti is 0.25%, Zn be 0. 09% with surplus be the duraluminum of Al.

Embodiment three, LED used as television aluminum alloy base material, this base material is 0.35% by metal mass percent Si, Fe is 0.3%, Cu is 0.1%, Mn is 0.9%, Mg is that 1. 20%, Cr are 0. 20 %, Ti is 0.10%, Zn be 0. 09% with surplus be the duraluminum of Al.

The working method of LED used as television aluminum alloy base material of the present invention is characterized in that: its step is following,

A, press metal mass percent Si:0.20% ~ 0.50%, Fe:0.30% ~ 0.70%, Cu≤0.25%; Mn is 0.80 ~ 1.0%, and Mg is 1. 10% ~ 1.25 %, and Cr is 0. 12% ~ 0. 30 %; Ti≤0.25%; Zn 0. 10% with surplus be that Al prepares aluminium alloy stock, aluminium alloy stock is mixed the back under 700 ℃ ~ 740 ℃ high temperature, carries out melting, make melt obtain uniform distribution; B, melt is cast under 680 ~ 730 ℃ temperature, obtained the hexagon ingot casting; C, ingot casting is incubated 6 ~ 10 hours under 560 ℃ ~ 610 ℃ temperature homogenizing are handled, and optimize the ingot casting interior tissue; D, ingot casting is hot-rolled down to the hot rolled coil that thickness is 3.0 ~ 6.5mm; E, hot rolled coil is cold-rolled to the duraluminum finished product volume that thickness is 1.0 ~ 1.5mm; F, finished product is twisted under the protection of inert gas, in box-type furnace under 300 ℃ ~ 360 ℃ (metal temperature) conditions, 1 ~ 5 hour mode of insulation carries out finished products, carries out air-cooled cooling in the back of coming out of the stove with 30 ℃ ~ 60 ℃/hour speed again; Duraluminum finished product after g, the annealing lists at the stretch bending-straightening machine machine, and the unit elongation of use 0% ~ 1.0% carries out stretch-bend leveller to be handled, to obtain the suitable LED used as television aluminum alloy base material of ys.

The present invention selects for use 3104 lower relatively alloy production of production cost to make base material, and it has solved 5052 alloys and has processed the problem that the punching out of used as television aluminum alloy base material is easy to crack, purchase cost is high.

Claims (2)

1. LED used as television aluminum alloy base material, it is characterized in that: this base material is 0.20% ~ 0.50% by metal mass percent Si, Fe is 0.30 ~ 0.70%; Cu≤0.25%; Mn is 0.80 ~ 1.0%, and Mg is 1. 10% ~ 1.25 %, and Cr is 0. 12% ~ 0. 30 %; Ti≤0.25%, Zn 0. 10% with surplus be the duraluminum of Al.

2. the working method of a LED used as television aluminum alloy base material, it is characterized in that: its step is following,

A, be 0.20% ~ 0.50% by metal mass percent Si, Fe is 0.30 ~ 0.70%, Cu≤0.25%; Mn is 0.80 ~ 1.0%, and Mg is 1. 10% ~ 1.25 %, and Cr is 0. 12% ~ 0. 30 %; Ti≤0.25%; Zn 0. 10% with surplus be that Al prepares aluminium alloy stock, aluminium alloy stock is mixed the back under 700 ℃ ~ 740 ℃ high temperature, carries out melting, make melt obtain uniform distribution; B, melt is cast under 680 ~ 730 ℃ temperature, obtained the hexagon ingot casting; C, ingot casting is incubated 6 ~ 10 hours under 560 ℃ ~ 610 ℃ temperature homogenizing are handled, and optimize the ingot casting interior tissue; D, ingot casting is hot-rolled down to the hot rolled coil that thickness is 3.0 ~ 6.5mm; E, hot rolled coil is cold-rolled to the duraluminum finished product volume that thickness is 1.0 ~ 1.5mm; F, finished product is twisted under the protection of inert gas, in box-type furnace under 300 ℃ ~ 360 ℃ (metal temperature) conditions, 1 ~ 5 hour mode of insulation carries out finished products, carries out air-cooled cooling in the back of coming out of the stove with 30 ℃ ~ 60 ℃/hour speed again; Duraluminum finished product after g, the annealing lists at the stretch bending-straightening machine machine, and the unit elongation of use 0% ~ 1.0% carries out stretch-bend leveller to be handled, to obtain the suitable LED used as television aluminum alloy base material of ys.