阅读说明：本技术 一种高耐久性led电子屏用铝材型边框的生产方法 (Production method of aluminum frame for high-durability LED electronic screen ) 是由 赵欣泰 唐开健 李�杰 王超 傅凡一 贡玉楼 于 2021-01-07 设计创作，主要内容包括：本发明公开了一种高耐久性LED电子屏用铝材型边框的生产方法,包括以下步骤：配料、铸造、均匀化、铸棒表面处理、挤压、时效处理和涂布。其中采用的铝合金,由以下重量百分比的成分组成：Si0.05-0.08%、Mn2.8-3.2%、Zn0.35-0.45%、Mg1.65-1.95%、Cu0.32-0.55%、Ti0.18-0.25%、Zr0.12-0.15%、余量为Al和不可避免的杂质。涂布过程中采用的铝合金涂料中加入了有机硅氟改性氧化石墨烯,使涂膜具有更好的抗紫外线、耐酸雨腐蚀、耐高低温等室外各种侵蚀的能力。(The invention discloses a production method of an aluminum frame for a high-durability LED electronic screen, which comprises the following steps: batching, casting, homogenizing, cast rod surface treatment, extrusion, aging treatment and coating. The aluminum alloy adopted by the method comprises the following components in percentage by weight: 0.05 to 0.08 percent of Si, 2.8 to 3.2 percent of Mn2, 0.35 to 0.45 percent of Zn1.65 to 1.95 percent of Mg1, 0.32 to 0.55 percent of Cu0.18 to 0.25 percent of Ti0.12 to 0.15 percent of Zr0, and the balance of Al and inevitable impurities. The organic silicon fluorine modified graphene oxide is added into the aluminum alloy coating adopted in the coating process, so that the coating has better capability of resisting ultraviolet rays, acid rain corrosion, high and low temperature and other outdoor various erosion.)

1. A production method of an aluminum material type frame for a high-durability LED electronic screen is characterized by comprising the following steps:

A. preparing materials: preparing the components of the aluminum alloy for preparing the aluminum profile frame according to the weight percentage;

B. casting: adding the prepared aluminum alloy raw material into a smelting furnace, uniformly mixing, smelting into liquid aluminum alloy, and performing standing, refining, slagging off, online degassing and filtering to melt and cast the liquid aluminum alloy into an aluminum alloy cast rod;

C. homogenizing: homogenizing the aluminum alloy cast rod in a homogenizing furnace, and cooling the aluminum alloy cast rod discharged from the furnace to room temperature by strong wind;

D. surface treatment of the cast rod: sawing the homogenized aluminum alloy cast rod into 1.0-1.2m short aluminum alloy cast ingots, and turning the as-cast surface skin of the short aluminum alloy cast ingot by using a lathe, wherein the turning thickness is 8-10 mm;

E. heating the aluminum alloy ingot to 450-460 ℃, performing extrusion molding at the extrusion speed of 5-6 m/min, the extrusion ratio of 80-90 and the mold temperature of 430-440 ℃, and cooling the aluminum alloy ingot to room temperature through water;

F. heating the extruded aluminum profile frame to 160-170 ℃, aging for 6-8 hours, and cooling along with the furnace;

G. coating an aluminum alloy coating on the surface of the aluminum profile frame, and drying;

the aluminum alloy comprises the following components in percentage by weight: 0.03 to 0.15 percent of Si, 2.5 to 3.5 percent of Mn2.2 to 0.8 percent of Zn0.2, 1.5 to 2.2 percent of Mg1, 0.15 to 0.85 percent of Cu0.18 to 0.25 percent of Ti0.08 to 0.25 percent of Zr0, and the balance of Al and inevitable impurities.

2. The method for producing the aluminum profile frame for the high-durability LED electronic screen as claimed in claim 1, wherein the aluminum alloy comprises the following components in percentage by weight: 0.05 to 0.08 percent of Si, 2.8 to 3.2 percent of Mn2, 0.35 to 0.45 percent of Zn1.65 to 1.95 percent of Mg1, 0.32 to 0.55 percent of Cu0.18 to 0.25 percent of Ti0.12 to 0.15 percent of Zr0, and the balance of Al and inevitable impurities.

3. The method as claimed in claim 1, wherein the homogenization treatment temperature in step C is 350-400 ℃ and the temperature-keeping time is 6-8 h.

4. The method for producing the aluminum profile frame for the high-durability LED electronic screen as claimed in claim 1, wherein the aluminum alloy coating comprises the following components in percentage by weight: 100 parts of acrylic emulsion, 10-15 parts of epoxy modified organic silicon resin, 0.5-1.2 parts of modified graphene oxide, 0.02-0.05 part of defoaming agent, 1-2 parts of dispersing agent, 50-60 parts of deionized water, 20-30 parts of ethyl acetate, 0.1-0.3 part of film-forming assistant and 0.6-KH 5500.3 parts of cross-linking agent.

5. The method for producing the aluminum profile frame for the high-durability LED electronic screen as claimed in claim 4, wherein the modified graphene oxide is organic silicon fluoride modified graphene oxide.

6. The method for producing the aluminum profile frame for the high-durability LED electronic screen as claimed in claim 4, wherein the dry film thickness of the aluminum alloy coating is 0.25-0.32 mm.

Technical Field

The invention relates to the technical field, in particular to a production method of an aluminum frame for a high-durability LED electronic screen.

Background

With the development of large screen and light weight of electronic products such as smart phones, tablet computers, liquid crystal display screens, smart televisions and the like, a high-strength aluminum alloy frame is urgently needed to improve the bending resistance of a machine body so as to avoid the phenomena of bending, bending and the like of the machine body when the machine body is pressed, and meanwhile, the aluminum alloy is required to have excellent oxidation coloring effect so as to meet the high decorative requirement of consumers on the appearance parts of the electronic products. At present, although the aluminum alloy frame in the market has the advantage of high strength, the oxidation coloring effect is poor, and the oxidation film often has the defects of texture stripes, color difference and the like, so that the aluminum alloy oxidation film has poor texture, low glossiness, poor coloring effect and the like, and cannot meet the high decorative requirement of consumers on electronic product appearance pieces. The aluminum material type frame for the outdoor LED electronic screen has higher requirements on the ultraviolet resistance, acid rain corrosion resistance, high and low temperature resistance and other performances of the aluminum alloy.

Therefore, the existing preparation method of the aluminum alloy frame still needs to be improved and developed, so the invention provides a production method of the aluminum frame for the LED electronic screen with high durability, in order to improve the durability of the aluminum frame and prolong the service life of the aluminum frame.

Disclosure of Invention

Based on the technical problems in the background art, the invention provides a production method of an aluminum frame for a high-durability LED electronic screen.

The technical scheme of the invention is as follows:

a production method of an aluminum material type frame for a high-durability LED electronic screen comprises the following steps:

A. preparing materials: preparing the components of the aluminum alloy for preparing the aluminum profile frame according to the weight percentage;

B. casting: adding the prepared aluminum alloy raw material into a smelting furnace, uniformly mixing, smelting into liquid aluminum alloy, and performing standing, refining, slagging off, online degassing and filtering to melt and cast the liquid aluminum alloy into an aluminum alloy cast rod;

C. homogenizing: homogenizing the aluminum alloy cast rod in a homogenizing furnace, and cooling the aluminum alloy cast rod discharged from the furnace to room temperature by strong wind;

D. surface treatment of the cast rod: sawing the homogenized aluminum alloy cast rod into 1.0-1.2m short aluminum alloy cast ingots, and turning the as-cast surface skin of the short aluminum alloy cast ingot by using a lathe, wherein the turning thickness is 8-10 mm;

E. extruding: heating the aluminum alloy ingot to 450-460 ℃, performing extrusion molding at the extrusion speed of 5-6 m/min, the extrusion ratio of 80-90 and the mold temperature of 430-440 ℃, and cooling the aluminum alloy ingot to room temperature through water;

F. aging treatment, namely heating the extruded aluminum profile frame to 160-170 ℃, aging for 6-8 hours, and cooling along with the furnace;

G. coating: and (3) coating an aluminum alloy coating on the surface of the aluminum profile frame, and drying.

Preferably, the aluminum alloy consists of the following components in percentage by weight: 0.45 to 0.65 percent of Si, 2.5 to 3.5 percent of Mn2.6 to 0.8 percent of Zn1.5 to 2.2 percent of Mg1, 0.07 to 0.12 percent of Cu0.18 to 0.25 percent of Ti0.04 to 0.06 percent of Zr0.04 to 0.06 percent of the balance of Al and inevitable impurities.

Further preferably, the aluminum alloy comprises the following components in percentage by weight: 0.48 to 0.55 percent of Si, 2.8 to 3.2 percent of Mn2, 0.62 to 0.72 percent of Zn1.65 to 1.95 percent of Mg1, 0.07 to 0.12 percent of Cu0.18 to 0.25 percent of Ti0.048 to 0.052 percent of Zr0, and the balance of Al and inevitable impurities.

Preferably, in the step C, the temperature of the homogenization treatment is 350-400 ℃, and the heat preservation time is 6-8 h.

Preferably, the aluminum alloy coating comprises the following components in percentage by weight: 100 parts of acrylic emulsion, 10-15 parts of epoxy modified organic silicon resin, 0.5-1.2 parts of modified graphene oxide, 0.02-0.05 part of defoaming agent, 1-2 parts of dispersing agent, 50-60 parts of deionized water, 20-30 parts of ethyl acetate, 0.1-0.3 part of film-forming assistant and 0.6-KH 5500.3 parts of cross-linking agent.

Further preferably, the modified graphene oxide is organic silicon fluoride modified graphene oxide.

More preferably, the dry film thickness of the aluminum alloy coating is 0.25-0.32 mm.

The invention has the advantages that: the production method of the aluminum frame for the high-durability LED electronic screen comprises the following steps: batching, casting, homogenizing, cast rod surface treatment, extrusion, aging treatment and coating. The aluminum alloy adopted by the method comprises the following components in percentage by weight: 0.05 to 0.08 percent of Si, 2.8 to 3.2 percent of Mn2, 0.35 to 0.45 percent of Zn1.65 to 1.95 percent of Mg1, 0.32 to 0.55 percent of Cu0.18 to 0.25 percent of Ti0.12 to 0.15 percent of Zr0, and the balance of Al and inevitable impurities. The organic silicon fluorine modified graphene oxide is added into the aluminum alloy coating adopted in the coating process, so that the coating has better capability of resisting ultraviolet rays, acid rain corrosion, high and low temperature and other outdoor various erosion.

Detailed Description

Example 1

A production method of an aluminum material type frame for a high-durability LED electronic screen comprises the following steps:

A. preparing materials: preparing the components of the aluminum alloy for preparing the aluminum profile frame according to the weight percentage;

B. casting: adding the prepared aluminum alloy raw material into a smelting furnace, uniformly mixing, smelting into liquid aluminum alloy, and performing standing, refining, slagging off, online degassing and filtering to melt and cast the liquid aluminum alloy into an aluminum alloy cast rod;

C. homogenizing: homogenizing the aluminum alloy cast rod in a homogenizing furnace, and cooling the aluminum alloy cast rod discharged from the furnace to room temperature by strong wind;

D. surface treatment of the cast rod: sawing the homogenized aluminum alloy cast rod into a short aluminum alloy cast ingot of 1.1m, and turning the cast surface of the surface layer of the short aluminum alloy cast ingot by using a lathe, wherein the turning thickness is 8.5 mm;

E. extruding: heating the aluminum alloy cast ingot to 455 ℃, carrying out extrusion forming under the conditions of extrusion speed of 5.2 m/min, extrusion ratio of 85 and die temperature of 435 ℃, and then cooling the aluminum alloy cast ingot to room temperature through water;

F. aging treatment, namely heating the extruded aluminum profile frame to 1605 ℃, aging for 7 hours, and cooling along with a furnace;

G. coating: and (3) coating an aluminum alloy coating on the surface of the aluminum profile frame, and drying.

The aluminum alloy comprises the following components in percentage by weight: 0.07% of Si, 2.85% of Mn2.39%, 0.39% of ZnMg1.82%, 0.45% of Cu0.22%, 0.13% of ZrC, and the balance of Al and inevitable impurities.

In the step C, the temperature of the homogenization treatment is 375 ℃, and the heat preservation time is 6.5 h.

The aluminum alloy coating comprises the following components in percentage by weight: 100 parts of acrylic emulsion, 14 parts of epoxy modified organic silicon resin, 0.8 part of modified graphene oxide, 0.04 part of defoaming agent, 1.5 parts of dispersing agent, 52 parts of deionized water, 28 parts of ethyl acetate, 0.25 part of film-forming assistant and KH 5500.55 parts of cross-linking agent.

The modified graphene oxide is organic silicon fluoride modified graphene oxide.

The dry film thickness of the aluminum alloy coating is 0.28 mm.

Example 2

A production method of an aluminum material type frame for a high-durability LED electronic screen comprises the following steps:

A. preparing materials: preparing the components of the aluminum alloy for preparing the aluminum profile frame according to the weight percentage;

B. casting: adding the prepared aluminum alloy raw material into a smelting furnace, uniformly mixing, smelting into liquid aluminum alloy, and performing standing, refining, slagging off, online degassing and filtering to melt and cast the liquid aluminum alloy into an aluminum alloy cast rod;

C. homogenizing: homogenizing the aluminum alloy cast rod in a homogenizing furnace, and cooling the aluminum alloy cast rod discharged from the furnace to room temperature by strong wind;

D. surface treatment of the cast rod: sawing the homogenized aluminum alloy cast rod into 1.2m short aluminum alloy cast ingots, and turning the as-cast surface skin of the surface layer of the short aluminum alloy cast ingot by using a lathe, wherein the turning thickness is 8 mm;

E. extruding: heating the aluminum alloy cast ingot to 460 ℃, carrying out extrusion forming under the conditions of extrusion speed of 5 m/min, extrusion ratio of 90 and mold temperature of 430 ℃, and then cooling the aluminum alloy cast ingot to room temperature through water;

F. aging treatment, namely heating the extruded aluminum profile frame to 170 ℃, aging for 6 hours, and cooling along with a furnace;

G. coating: and (3) coating an aluminum alloy coating on the surface of the aluminum profile frame, and drying.

The aluminum alloy comprises the following components in percentage by weight: 0.08% of Si, 2.8% of Mn2.45% of Zn0.45%, 1.65% of Mg1.55% of Cu0.55%, 0.18% of Ti0.15% of Zr0.15%, and the balance of Al and inevitable impurities.

In the step C, the temperature of the homogenization treatment is 350 ℃, and the heat preservation time is 8 h.

The aluminum alloy coating comprises the following components in percentage by weight: 100 parts of acrylic emulsion, 15 parts of epoxy modified organic silicon resin, 0.5 part of modified graphene oxide, 0.05 part of defoaming agent, 1 part of dispersing agent, 60 parts of deionized water, 20 parts of ethyl acetate, 0.3 part of film-forming assistant and KH 5500.3 parts of cross-linking agent

The modified graphene oxide is organic silicon fluoride modified graphene oxide.

The dry film thickness of the aluminum alloy coating is 0.25 mm.

Example 3

A production method of an aluminum material type frame for a high-durability LED electronic screen comprises the following steps:

A. preparing materials: preparing the components of the aluminum alloy for preparing the aluminum profile frame according to the weight percentage;

B. casting: adding the prepared aluminum alloy raw material into a smelting furnace, uniformly mixing, smelting into liquid aluminum alloy, and performing standing, refining, slagging off, online degassing and filtering to melt and cast the liquid aluminum alloy into an aluminum alloy cast rod;

C. homogenizing: homogenizing the aluminum alloy cast rod in a homogenizing furnace, and cooling the aluminum alloy cast rod discharged from the furnace to room temperature by strong wind;

D. surface treatment of the cast rod: sawing the homogenized aluminum alloy cast rod into a short aluminum alloy cast ingot of 1.0m, and turning the cast surface of the surface layer of the short aluminum alloy cast ingot by using a lathe, wherein the turning thickness is 10 mm;

E. extruding: heating the aluminum alloy cast ingot to 450 ℃, carrying out extrusion forming under the conditions of extrusion speed of 6 m/min, extrusion ratio of 80 and mold temperature of 440 ℃, and then cooling the aluminum alloy cast ingot to room temperature through water;

F. aging treatment, namely heating the extruded aluminum profile frame to 160 ℃, aging for 8 hours, and cooling along with a furnace;

G. coating: and (3) coating an aluminum alloy coating on the surface of the aluminum profile frame, and drying.

The aluminum alloy comprises the following components in percentage by weight: 0.05% of Si, 3.2% of Mn3.35% of Zn0.35% of Mg1.95% of Cu0.32% of Ti, 0.25% of Zr0.12% of Zr, and the balance of Al and inevitable impurities.

In the step C, the temperature of the homogenization treatment is 400 ℃, and the heat preservation time is 6 hours.

The aluminum alloy coating comprises the following components in percentage by weight: 100 parts of acrylic emulsion, 10 parts of epoxy modified organic silicon resin, 1.2 parts of modified graphene oxide, 0.02 part of defoaming agent, 2 parts of dispersing agent, 50 parts of deionized water, 30 parts of ethyl acetate, 0.1 part of film-forming assistant and KH 5500.6 parts of cross-linking agent.

The modified graphene oxide is organic silicon fluoride modified graphene oxide.

The dry film thickness of the aluminum alloy coating is 0.32 mm.

Comparative example 1

The modified graphene oxide in example 1 was deleted, and the remaining compounding ratio and production method were unchanged.

According to the national standard GB/T16865-2013 sample and method for tensile test of wrought aluminum, magnesium and alloy processing products thereof, the aluminum alloys prepared in the examples and the comparative examples are processed into standard tensile samples, the standard tensile samples are stretched on an HGF-500 type electronic tensile testing machine at room temperature, the tensile rate is 2 mm/min, the tensile strength and the elongation after fracture of the aluminum alloy are detected, and the detection results are shown in Table 1.

Table 1: data on the test of the aluminum profiles prepared in examples 1 to 3 and comparative example 1;

according to the test data, the aluminum material type frame for the high-durability LED electronic screen, which is produced by the invention, has better durability due to the addition of the modified graphene oxide.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.