阅读说明：本技术 动车用铝合金材料的生产工艺 (Production process of aluminum alloy material for locomotive ) 是由 赵宁 陈伟涛 于 2020-08-19 设计创作，主要内容包括：本发明公开了一种动车用铝合金材料的生产工艺,其化学成分如下：Si:0.3～0.6％、Fe:0.1～0.3％、Cu:≤0.1％、Mn:≤0.1％、Zn:≤0.15％、Mg:0.35～0.6％、Cr:≤0.05％、Ti:≤0.1％、Mn+Cr:0.12～0.5％,余量：Al；对上述铝合金材料依次进行固溶处理、淬火处理、时效处理、回火处理。本发明的优点在于：在保证铝合金材料的机械性能的前提下,降低了固溶处理的温度,大大降低了生产能耗,提高了热处理效率。(The invention discloses a production process of an aluminum alloy material for a bullet train, which comprises the following chemical components: 0.3 to 0.6 percent of Si, 0.1 to 0.3 percent of Fe, less than or equal to 0.1 percent of Cu, less than or equal to 0.1 percent of Mn, less than or equal to 0.15 percent of Zn, 0.35 to 0.6 percent of Mg, less than or equal to 0.05 percent of Cr, less than or equal to 0.1 percent of Ti, 0.12 to 0.5 percent of Mn + Cr, and the balance: al; and sequentially carrying out solution treatment, quenching treatment, aging treatment and tempering treatment on the aluminum alloy material. The invention has the advantages that: on the premise of ensuring the mechanical property of the aluminum alloy material, the temperature of the solution treatment is reduced, the production energy consumption is greatly reduced, and the heat treatment efficiency is improved.)

1. the production process of the aluminum alloy material for the locomotive is characterized by comprising the following steps of: the chemical components are as follows: 0.3 to 0.6 percent of Si, 0.1 to 0.3 percent of Fe, less than or equal to 0.1 percent of Cu, less than or equal to 0.1 percent of Mn, less than or equal to 0.15 percent of Zn, 0.35 to 0.6 percent of Mg, less than or equal to 0.05 percent of Cr, less than or equal to 0.1 percent of Ti, 0.12 to 0.5 percent of Mn + Cr, and the balance: al; and sequentially carrying out solution treatment, quenching treatment, aging treatment and tempering treatment on the aluminum alloy material.

2. The production process of the aluminum alloy material for the bullet train according to claim 1, characterized in that: solution treatment: and (3) placing the aluminum alloy material in an environment with the temperature of 535 +/-5 ℃ for heat preservation for 6-6.5 h.

3. The production process of the aluminum alloy material for the bullet train according to claim 1, characterized in that: quenching treatment: and (3) rapidly putting the aluminum alloy material subjected to solid solution into quenching liquid at the temperature of 80 +/-10 ℃, and keeping for 5-10 min.

4. The production process of the aluminum alloy material for the bullet train according to claim 1, characterized in that: aging treatment: and placing the quenched aluminum alloy material in a low-temperature furnace at the temperature of 165 +/-5 ℃ for aging treatment for 4-4.5 hours.

5. The production process of the aluminum alloy material for the bullet train according to claim 1, characterized in that: tempering treatment: and (3) tempering the aluminum alloy material subjected to the aging treatment in an environment at 400-500 ℃ for 20-30 min, and then naturally cooling.

Technical Field

The invention relates to a production process of an aluminum alloy material for a bullet train.

Background

Aluminum alloy is a non-ferrous metal which is most widely applied in industry, and along with rapid development of technology and industrial economy, the aluminum alloy is widely applied to various industries such as aerospace, automobiles, machinery and the like, so that the aluminum alloy is required to have higher strength and hardness, the strength and hardness of the aluminum alloy cannot meet the requirements, and the mechanical property of the aluminum alloy needs to be improved through heat treatment, but the existing treatment method is long in time consumption and high in treatment cost.

Disclosure of Invention

The invention aims to provide a production process of an aluminum alloy material for a bullet train, which has high heat treatment efficiency and can meet the requirement on mechanical properties.

The production process of the aluminum alloy material for the locomotive comprises the following chemical components: 0.3 to 0.6 percent of Si, 0.1 to 0.3 percent of Fe, less than or equal to 0.1 percent of Cu, less than or equal to 0.1 percent of Mn, less than or equal to 0.15 percent of Zn, 0.35 to 0.6 percent of Mg, less than or equal to 0.05 percent of Cr, less than or equal to 0.1 percent of Ti, 0.12 to 0.5 percent of Mn + Cr, and the balance: al; and sequentially carrying out solution treatment, quenching treatment, aging treatment and tempering treatment on the aluminum alloy material.

Further, the production process of the aluminum alloy material for the bullet train comprises the following steps of: and (3) placing the aluminum alloy material in an environment with the temperature of 535 +/-5 ℃ for heat preservation for 6-6.5 h.

Further, the production process of the aluminum alloy material for the bullet train comprises the following steps: and (3) rapidly putting the aluminum alloy material subjected to solid solution into quenching liquid at the temperature of 80 +/-10 ℃, and keeping for 5-10 min.

Further, the production process of the aluminum alloy material for the bullet train comprises the following steps: and placing the quenched aluminum alloy material in a low-temperature furnace at the temperature of 165 +/-5 ℃ for aging treatment for 4-4.5 hours.

Further, the production process of the aluminum alloy material for the bullet train comprises the following steps: and (3) tempering the aluminum alloy material subjected to the aging treatment in an environment at 400-500 ℃ for 20-30 min, and then naturally cooling.

The invention has the advantages that: on the premise of ensuring the mechanical property of the aluminum alloy material, the temperature of the solution treatment is reduced, the production energy consumption is greatly reduced, and the heat treatment efficiency is improved.

Detailed Description

The technical solution of the present invention is further described with reference to the following specific examples.

The production process of the aluminum alloy material for the locomotive comprises the following chemical components: 0.3 to 0.6 percent of Si, 0.1 to 0.3 percent of Fe, less than or equal to 0.1 percent of Cu, less than or equal to 0.1 percent of Mn, less than or equal to 0.15 percent of Zn, 0.35 to 0.6 percent of Mg, less than or equal to 0.05 percent of Cr, less than or equal to 0.1 percent of Ti, 0.12 to 0.5 percent of Mn + Cr, and the balance: al; and sequentially carrying out solution treatment, quenching treatment, aging treatment and tempering treatment on the aluminum alloy material.

Solution treatment: and (3) placing the aluminum alloy material in an environment with the temperature of 535 +/-5 ℃ for heat preservation for 6-6.5 h.

Quenching treatment: and (3) rapidly putting the aluminum alloy material subjected to the solution treatment into a quenching liquid at the temperature of 80 +/-10 ℃, and keeping for 5-10 min.

Aging treatment: and placing the quenched aluminum alloy material in a low-temperature furnace at the temperature of 165 +/-5 ℃ for aging treatment for 4-4.5 hours.

Tempering treatment: and (3) tempering the aluminum alloy material subjected to the aging treatment in an environment at 400-500 ℃ for 20-30 min, and then naturally cooling.

The aluminum alloy material manufactured by the production method of the invention has the following part of technical indexes:

tensile strength is 60-100 Mpa;

the yield strength is 100 Mpa;

elongation after fracture is 50mm percent;

hardness (HW): 28.