Manufacturing process for door and window aluminum alloy

A manufacturing process, aluminum alloy technology, applied in the field of door and window aluminum alloy manufacturing process, can solve the problems of low strength and unsuitability of pure aluminum, achieve high heat conversion efficiency, and improve the effect of machining performance

Inactive Publication Date: 2017-08-04

合肥协耀玻璃制品有限公司

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AI-Extracted Technical Summary

Problems solved by technology

However, the strength of pure aluminum is very low, and the σb value in the an...

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Abstract

The invention discloses a manufacturing process for aluminum alloy for doors and windows, which comprises the following main steps: raw material smelting, remelting and refining, hot forging treatment, slag removal, annealing treatment and solid solution. The present invention provides a manufacturing process for aluminum alloy doors and windows. Adding rare earth elements cerium and lanthanum to the steel can reduce the oxygen and sulfur elements in the molten steel so that the impurities in the finished steel are reduced. The oxygen blowing decarburization And high temperature denitrification can improve the machining performance of the alloy. At the same time, put the aluminum alloy raw material into the vacuum induction furnace for calcination, with high heat conversion efficiency, safe and reliable, and avoid impurities in the air from entering the aluminum alloy and affecting the purity of the aluminum alloy. .

Technology Topic

Rare-earth elementLanthanum +14

Examples

Experimental program(3)

Example Embodiment

[0019] Example 1

[0020] A manufacturing process for aluminum alloy doors and windows, including the following main steps:

[0021] Step 1: Raw material smelting. Put the raw materials for making aluminum alloy into a vacuum induction furnace for smelting, the smelting temperature is 1500°C, the smelting time is 12h, and the aluminum water is cast into a consumable electrode in a metal mold;

[0022] Step 2: Remelting refining, the burnt consumable electrode is subjected to vacuum arc remelting refining or electroslag remelting refining to form an electroslag ingot with a diameter of 10mm, and the melting temperature is 1300℃;

[0023] Step 3: Hot forging process, the electroslag ingot is made into aluminum alloy liquid, and the aluminum alloy liquid is hot forged at a temperature of 1600°C and a vacuum condition of 0.1 MPa. When the vacuum degree is 0.2 MPa, oxygen blowing and decarburization are started. The carbon content in the aluminum alloy liquid is reduced to 0.03%, and oxygen blowing is stopped, and high-vacuum denitrification treatment is performed. The electromagnetic stirrer must be used during hot forging;

[0024] Step 5: Deslagging, adding 35kg/t of soda ash to deslagging, the slagging time is 30min, and the vacuum is lower than 0.4MPa;

[0025] Step 6: Annealing treatment, the first annealing is to heat the aluminum alloy liquid in an annealing furnace at 800°C for 12h, and cool it to 200°C at a rate of 50°C per hour. The second annealing first heats the aluminum alloy The liquid is kept at 500°C in the annealing furnace for 12h, and then cooled to room temperature at a rate of 30°C per hour to obtain an aluminum alloy matrix;

[0026] Step 7: Solid solution, solid solution treatment is performed on the aluminum alloy matrix, the solution treatment temperature is 1000° C., and the holding time is 3 hours to obtain the finished aluminum alloy.

[0027] The intensity of the electromagnetic stirrer in the step 3 is 1600 N/L, and the voltage on the electromagnetic stirrer is 360V.

[0028] The degree of vacuum maintained in the vacuum induction furnace in the step 1 is 0.01 MPa.

[0029] The annealing furnace in the step 6 is provided with an insulating layer with a thickness of 2 cm.

[0030] The thermal insulation layer of the annealing furnace includes polyurethane foam, polyethylene PEF, perlite and benzene board.

[0031] The raw materials for manufacturing aluminum alloy in the step 1 consist of the following chemical components by mass percentage: C 0.03~0.06%, N 0.18~0.198%, S 0~0.001%, P 0.01~0.013%, Ag 0.25~0.33%, Cu 2.70~3.50%, Ce0.001~0.010%, La 0.02~0.07%, Ge 16.00~24.00%, Si 0.90~1.20%, Mn 0.60~1.10%, Ni0.25~0.33%, Fe 0.90~0.14%, W 3.00~4.30%, Co 0.40~0.60%, B 0.25~0.33%, the rest is aluminum and inevitable impurity elements.

Example Embodiment

[0032] Example 2

[0033] A manufacturing process for aluminum alloy doors and windows, including the following main steps:

[0034] Step 1: Raw material smelting. Put the raw materials for making aluminum alloy into a vacuum induction furnace for smelting, the smelting temperature is 1800°C, the smelting time is 13 hours, and the molten aluminum is cast into a consumable electrode in a metal mold;

[0035] Step 2: Remelting refining, the burnt consumable electrode is subjected to vacuum arc remelting refining or electroslag remelting refining to produce an electroslag ingot with a diameter of 50mm, and the melting temperature is 1400℃;

[0036] Step 3: Hot forging process, the electroslag ingot is made into aluminum alloy liquid, and the aluminum alloy liquid is hot forged at a temperature of 1650°C and a vacuum condition of 0.3 MPa. When the vacuum degree is 0.2 MPa, oxygen blowing and decarburization are started. The content of carbon in the aluminum alloy liquid drops to 0.03~0.05%, stop blowing oxygen, carry out high vacuum denitrification treatment, and use an electromagnetic stirrer during hot forging;

[0037] Step 5: Deslagging, adding 35kg/t of soda ash to deslagging, the slagging time is 40min, and the vacuum is less than 0.4MPa;

[0038] Step 6: Annealing, the first annealing is to heat the aluminum alloy liquid in an annealing furnace at 850°C for 13h, and cool it to 300°C at a rate of 65°C per hour. The second annealing first heats the aluminum alloy The liquid is kept at 600℃ in the annealing furnace for 13h, and then cooled to normal temperature at a rate of 30~50℃ per hour to obtain the aluminum alloy matrix;

[0039] Step 7: Solid solution, solid solution treatment is performed on the aluminum alloy matrix, the solution treatment temperature is 1100°C, and the holding time is 4 hours, and the finished aluminum alloy is obtained.

[0040] The intensity of the electromagnetic stirrer in the step 3 is 1600 N/L, and the voltage on the electromagnetic stirrer is 360V.

[0041] The degree of vacuum maintained in the vacuum induction furnace in the step 1 is 0.03 MPa.

[0042] The annealing furnace in the step 6 is provided with an insulation layer with a thickness of 10 cm.

[0043] The thermal insulation layer of the annealing furnace includes polyurethane foam, polyethylene PEF, perlite and benzene board.

[0044] The raw materials for manufacturing aluminum alloy in step 1 consist of the following chemical components by mass percentage: C 0.04~0.07%, N 0.185~0.20%, S 0~0.002%, P 0.012~0.014%, Ag 0.29~0.35%, Cu 2.75~3.70%, Ce0.004~0.013%, La 0.04~0.09%, Ge 17.00~25.00%, Si 0.95~1.30%, Mn 0.70~1.20%, Ni0.27~0.35%, Fe 0.95~0.15%, W 3.50~4.50%, Co 0.45~0.65%, B 0.29~0.35%, the rest is aluminum and inevitable impurity elements.

Example Embodiment

[0045] Example 3

[0046] A manufacturing process for aluminum alloy doors and windows, including the following main steps:

[0047] Step 1: Raw material smelting, the raw materials for manufacturing aluminum alloy are smelted in a vacuum induction furnace, the smelting temperature is 2000 ℃, the smelting time is 14 hours, and the aluminum water is cast into a consumable electrode in a metal mold;

[0048] Step 2: Remelting refining, the burnt consumable electrode is subjected to vacuum arc remelting refining or electroslag remelting refining to produce an electroslag ingot with a diameter of 100mm, and the melting temperature is 1500℃;

[0049] Step 3: Hot forging treatment, the electroslag ingot is made into aluminum alloy liquid, and the aluminum alloy liquid is hot forged at a temperature of 1700°C and a vacuum condition of 0.6 MPa. When the vacuum degree is 0.22 MPa, oxygen blowing and decarburization are started. The carbon content in the aluminum alloy liquid is reduced to 0.05%, stop blowing oxygen, carry out high vacuum denitrification treatment, and use an electromagnetic stirrer during hot forging;

[0050] Step 5: Deslagging, adding 35kg/t of soda ash for deslagging, the deslagging time is 50min, and the vacuum is less than 0.4MPa;

[0051] Step 6: Annealing treatment, the first annealing is to heat the aluminum alloy liquid at 900℃ in the annealing furnace for 14h, and cool it down to 400℃ at a rate of 50~80℃ per hour. The second annealing The aluminum alloy liquid is kept at 700°C in the annealing furnace for 14h, and then cooled to room temperature at a rate of 50°C per hour to obtain the aluminum alloy matrix;

[0052] Step 7: Solid solution, solid solution treatment is performed on the aluminum alloy matrix, the solution treatment temperature is 1200° C., and the holding time is 5 hours, and the finished aluminum alloy is obtained.

[0053] The intensity of the electromagnetic stirrer in the step 3 is 1600 N/L, and the voltage on the electromagnetic stirrer is 360V.

[0054] The degree of vacuum maintained in the vacuum induction furnace in the step 1 is 0.05 MPa.

[0055] The annealing furnace in the step 6 is provided with an insulating layer with a thickness of 20 cm.

[0056] The thermal insulation layer of the annealing furnace includes polyurethane foam, polyethylene PEF, perlite and benzene board.

[0057] The raw materials for manufacturing aluminum alloy in the step 1 consist of the following chemical components by mass percentage: C 0.04~0.06%, N 0.185~0.198%, S 0~0.001%, P 0.012~0.013%, Ag 0.29~0.33%, Cu 2.75~3.50%, Ce0.004~0.010%, La 0.04~0.07%, Ge 17.00~24.00%, Si 0.95~1.20%, Mn 0.70~1.10%, Ni0.27~0.33%, Fe 0.95~0.14%, W 3.50~4.30%, Co 0.45~0.60%, B 0.29~0.33%, the rest is aluminum and inevitable impurity elements.

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PUM

Property	Measurement	Unit
Diameter	10.0	mm
Thickness	2.0	cm
Diameter	50.0	mm
tensile		MPa
Particle size		Pa
strength	10

Description & Claims & Application Information

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the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine

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Classification and recommendation of technical efficacy words

High heat conversion efficiency
Improve machinability

Manufacturing process for door and window aluminum alloy

A manufacturing process, aluminum alloy technology, applied in the field of door and window aluminum alloy manufacturing process, can solve the problems of low strength and unsuitability of pure aluminum, achieve high heat conversion efficiency, and improve the effect of machining performance

AI-Extracted Technical Summary

Problems solved by technology

Abstract

Examples

Example Embodiment

Example Embodiment

Example Embodiment

PUM

Description & Claims & Application Information

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