Welcome to: Guofa metal materials

Aluminum, copper, stainless steel, insulation material: +8676085317075

Heat treatment analysis of aluminum plate for aircraft

Author:中山市国发金属材料有限公司 Click: Time:2020-09-04 17:03:42

Heat treatment analysis of aluminum plate for aircraft

In order to improve the performance and ensure the safety of the aircraft, the material and work requirements for the body and various parts are very high. However, aluminum alloy is the main material used in them, which requires high reliability. Because the heat treatment has a great influence on the properties of aluminum alloy, the equipment, heat treatment process, heat treatment temperature, time and material test methods are standardized, and the standards are formulated to ensure the product quality. Typical standards are mil-h-6088 and 6088, and the revised edition 6088e is published. Now the heat treatment of aluminum alloy products for aircraft is based on these standards. The following will continue to explain the heat treatment related matters of aluminum plate, and introduce the development trend of modern heat treatment equipment and new heat treatment technology.

Mil-h-6088de (key points related to plate) 2-1 scope of application this standard specifies the requirements, test methods, heat treatment procedures, heat treatment temperature, material test methods and other related matters of heat treatment furnace equipment for aluminum alloy products used for manufacturing weapons. Under the application of this standard, the required properties of various alloys are also specified.

2-2 requirements 2-21 device (1) heating medium: using air, flowing liquid, burning gas or protective gas and salt bath. However, these media should not have a bad effect on the material. Batch furnaces and salt baths must be designed and constructed in such a way that the temperature of air and materials during heating and holding time, whether in the working area or in any part of the holding area, shall not exceed the maximum value of the heat treatment and test materials specified in Tables 1 and 5.

(2) Temperature control device: all heat treatment equipment should be properly equipped with digital and very accurate automatic temperature control instrument, and the temperature of the whole working area must be accurately controlled. This kind of instrument should not be installed in the place where there is much dust and vibration, and where the temperature is outside 0 ~ 60 ℃ and exposed to sunlight.

(3) Quenching device: in order to quench water, glycol aqueous solution, liquefied gas and oil, appropriate quenching device must be installed.

Necessary process of 2-2-2 solution heat treatment

(1) Temperature: aluminum alloy products, including aluminum clad plate, must be heat treated according to a certain temperature range specified in Table 1. If the requirements in Table 1 can not be strictly followed due to special circumstances, it is better to make a confirmatory test result. In order to obtain the recognition and change, an application can be submitted to the ordering party.

(2) Repeated heat treatment: the heat treatment of materials that have been overheated is called repeated heat treatment. Therefore, the first heat treatment of materials purchased in the state of heat treatment is regarded as repeated heat treatment. Annealing and precipitation treatment are not considered as heat treatment. 2014, 2024, 22197075, 7079 and 7178 aluminum clad plates shall not exceed the solution heat treatment times specified in Table 2.

(3) Heat treatment operation: heat treatment is the treatment of all parts or materials, not only partial treatment. In addition, heat treatment must be carried out by a method suitable for obtaining a highly homogeneous product.

2-2-3 optimum process and operation

(1) Charging into the furnace and salt bath: it is easy to heat and cool the heat-treated materials. In order to get uniform temperature as quickly as possible, the heating agent and coolant must be in free flow state. When the given value of the furnace increases or decreases, the temperature uniformity can not be satisfied, so the furnace can not be fed.

(2) Solution heat treatment (1) after reaching the solution heat treatment temperature, necessary solution heat treatment shall be carried out. In order to obtain the specified performance, it is better to keep the holding time long enough. The recommended holding time for batch furnace is shown in Table 3. ② When the products with different section thickness are heat treated at the same time, whether it is assembled parts, separated pieces or overlapped products, the best insulation time should be determined according to the maximum section thickness. (3) Quenching (1) for sweet potato of 2014, 2017, 2024, 7075 and 7178 alloy plates, sufficient water, circulating water or immersing all products in two kinds of water are used for quenching. After the quenching operation, the water temperature should not exceed 300C when the heat-treated material is taken out. The maximum holding time of immersion quenching is shown in Table 4. When using ethylene glycol for quenching, if the required mechanical properties and corrosion resistance can be achieved under special concentration, the quenching medium temperature is allowed to reach 500C.

② Immerse all the products in ethylene glycol or liquefied gas, and use high-speed and large amount of cold water to quench the products completely in a special room. If the quenched product passes the intergranular corrosion test and meets the requirements of the corresponding material standards, it can also be used for deformed materials.


文章推荐

WeChat

Website QR code

Service hotline:+8676085317075 

Address: No.1 Zhanxing Road, Torch Development Zone, Zhongshan City, Guangdong Province

Zhongshan Guofa metal materials Co., Ltd

We specialize in high-end and high-quality imported aluminum, copper, stainless steel and insulating materials.

Web:http://www.zsguofa.com    http://www.gf7075.com    

alibaba:https://gf7075.1688.com

E-mail:1990649549@qq.com

图片展示

Copyright (2010) Guofa metal materials 

Geeten@ design all rights reserved

Copyright (2010) Guofa metal materials  Geeten@ design all rights reserved

Service Center

Please choose online customer service to communicate

Contacts
Hotline
008676085317075
work shift
Monday to Saturday
E-mail
1990649549@qq.com
Scan a QR Code
Qrcode
Qrcode
添加微信好友,详细了解产品
使用企业微信
“扫一扫”加入群聊
复制成功
添加微信好友,详细了解产品
我知道了