阅读说明：本技术 一种铝型材热压铸加工工艺 (Hot-press casting processing technology for aluminum profile ) 是由 魏道金 于 2019-10-22 设计创作，主要内容包括：本发明公开了一种铝型材热压铸加工工艺,涉及铝制品锻造领域。本发明仅需经过(1)预热、(2)压铸、(3)固溶、(4)冷却、(5)碱洗、(6)化学抛光、(7)电氧化、(8)烘干即可完成铝型材热压铸。本发明的一种铝型材热压铸加工工艺,为社会提供了一套方便可靠的铝型材铸造工艺,同时,用此方法铸造的铝型材器件具有较强的抗氧化能力和耐压强度。(The invention discloses an aluminum profile hot-press casting processing technology, and relates to the field of aluminum product forging. The invention can finish the hot-press casting of the aluminum profile only by (1) preheating, (2) die casting, (3) solid solution, (4) cooling, (5) alkali washing, (6) chemical polishing, (7) electrooxidation and (8) drying. The hot-press casting process for the aluminum profile provides a convenient and reliable aluminum profile casting process for the society, and meanwhile, an aluminum profile device cast by the method has strong oxidation resistance and compressive strength.)

1. The hot-press casting processing technology for the aluminum profile is characterized by comprising the following steps of:

(1) preheating: heating the aluminum profile ingot to 515-550 ℃, heating the mold to 520-535 ℃ and preserving heat for 20-30 minutes;

(2) die casting: transferring the aluminum profile ingot into a die, and performing die casting at the die casting temperature of 530-555 ℃;

(3) solid solution: the die-cast aluminum profile is subjected to heat preservation for 30-50 minutes at the temperature of 490-510 ℃;

(4) and (3) cooling: putting the aluminum profile after solid solution into a cooling tank for water-cooling quenching, wherein the soaking time is 20-45 seconds;

(5) alkali washing: placing the cooled aluminum profile into an alkaline washing tank to be soaked for 5 minutes; the alkali liquor in the alkali washing tank is a sodium hydroxide solution with the concentration of 28-45 g/L;

(6) chemical polishing: washing the aluminum profile after alkali washing with clear water, chemically polishing the aluminum profile with 5-10% sulfuric acid solution, and washing again;

(7) electro-oxidation: taking an aluminum profile as an anode, taking a lead plate as a cathode, and introducing a 20-30V power supply to form an oxide film on the surface of the aluminum profile, and then washing with clear water;

(8) drying: and (3) drying the aluminum profile after being washed in a dryer at the drying temperature of 105-120 ℃.

2. The aluminum profile hot-press casting processing technology as claimed in claim 1, wherein the concentration of the sulfuric acid solution used in the chemical polishing (6) is 8%.

Technical Field

The invention relates to the field of aluminum product forging, in particular to a hot-press casting processing technology for an aluminum profile.

Background

With the rapid development of national economy and high and new technology, the aluminum smelting and aluminum profile processing industry in China develops rapidly, which reaches 879.3 ten thousand tons in 2006 and becomes the first place in the world beyond the United states; the Chinese aluminum processing technology has the characteristics that the technology is advanced and laggard, and when high-end processing equipment and method surpass the top of the world, vast middle and small-sized enterprises use the laggard equipment and method. The existing aluminum profile product is simple in processing technology, so that the produced aluminum profile is low in oxidation resistance and compressive strength, and the service life of the aluminum profile is shortened.

Disclosure of Invention

In view of the problems in the prior art, the invention aims to provide an aluminum profile hot-press casting processing technology, and the aluminum profile cast by using the method has stronger oxidation resistance and compressive strength.

In order to achieve the purpose, the invention adopts the technical scheme that: a hot-press casting process for aluminum profiles comprises the following steps:

(1) preheating: heating the aluminum profile ingot to 515-550 ℃, heating the mold to 520-535 ℃ and preserving heat for 20-30 minutes;

(2) die casting: transferring the aluminum profile ingot into a die, and performing die casting at the die casting temperature of 530-555 ℃;

(3) solid solution: the die-cast aluminum profile is subjected to heat preservation for 30-50 minutes at the temperature of 490-510 ℃;

(4) and (3) cooling: putting the aluminum profile after solid solution into a cooling tank for water-cooling quenching, wherein the soaking time is 20-45 seconds;

(5) alkali washing: placing the cooled aluminum profile into an alkaline washing tank to be soaked for 5 minutes; the alkali liquor in the alkali washing tank is a sodium hydroxide solution with the concentration of 28-45 g/L;

(6) chemical polishing: washing the aluminum profile after alkali washing with clear water, chemically polishing the aluminum profile with 5-10% sulfuric acid solution, and washing again;

(7) electro-oxidation: taking an aluminum profile as an anode, taking a lead plate as a cathode, and introducing a 20-30V power supply to form an oxide film on the surface of the aluminum profile, and then washing with clear water;

(8) drying: and (3) drying the aluminum profile after being washed in a dryer at the drying temperature of 105-120 ℃.

Preferably, the concentration of the sulfuric acid solution used in the (6) chemical polishing is 8%.

The hot-press casting process for the aluminum profile provides a convenient and reliable aluminum profile casting process for the society, and meanwhile, an aluminum profile device cast by the method has strong oxidation resistance and compressive strength.

Detailed Description

The present invention will be described in further detail with reference to examples.