Hot isostatic pressing treatment process method for casting forming ZL101A aluminum alloy

A ZL101A, hot isostatic pressing technology, applied in the field of aluminum alloy casting and heat treatment, can solve the problems of reduced mechanical properties and corrosion properties of aluminum alloy materials, fast cooling rate at high temperature, poor mechanical properties at room temperature, etc., to save production cycle, The effect of reducing the porosity and shrinkage rate and reducing the critical cooling rate of quenching

Active Publication Date: 2020-08-07
钢研昊普科技有限公司 +1
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Problems solved by technology

In the traditional quenching process, water-cooling quenching is mostly used, the process controllability is poor, the cooling rate in the high-temperature section is fast, and the aluminum alloy is prone to stress concentration, resulting in a decrease in the mechanical properties and corrosion properties of the aluminum alloy material. Experience shows that the workpiece from casting to aging treatment The longer the stagnation time, the worse the room temperature mechanical properties of the later products

Method used

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  • Hot isostatic pressing treatment process method for casting forming ZL101A aluminum alloy
  • Hot isostatic pressing treatment process method for casting forming ZL101A aluminum alloy
  • Hot isostatic pressing treatment process method for casting forming ZL101A aluminum alloy

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Embodiment 1

[0053] This embodiment provides a hot isostatic pressing process method for casting ZL101A aluminum alloy, including:

[0054] Step 1: ZL101A aluminum alloy casting casting;

[0055] Aluminum alloy ingots are used as raw materials. The composition of aluminum alloy ingots is shown in Table 1. Furan resin is used as raw material to make sand molds. Al-10Sr alloy is added as a modifier to control the Sr content of about 0.03% (wt). Melt in the graphite crucible. After all the melting, the temperature is controlled at 730°C to 750°C for refining and degassing. After degassing, let it stand for 10 minutes, cool down to 710°C and cast it into a cast rod with a diameter of 20mm.

[0056] Table 1: Composition of the ZL101A aluminum alloy used

[0057]

[0058]

[0059] Step 2: Hot isostatic pressing treatment of ZL101A aluminum alloy castings;

[0060] The ZL101A aluminum alloy casting is heated from room temperature to 540°C with a heating rate of 0.15K / s, kept at 540°C and ...

Embodiment 2

[0062] In Example 2, the same hot isostatic pressing machine as in Example 1 and the process of casting ZL101A aluminum alloy castings are adopted. The difference from Example 1 is that the ZL101A aluminum alloy castings are heated from room temperature to 530 ° C, and the temperature rises The speed is 0.12K / s, heat preservation and pressure at 540°C and 80MPa for 2h, cool down to 180°C at a speed of 1K / s, control the pressure at 70-80MPa during the cooling process, cool to 180°C in a hot isostatic pressing furnace Carry out artificial aging within 3 hours.

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Abstract

The invention relates to a hot isostatic pressing treatment process method for a casting forming ZL101A aluminum alloy, belongs to the technical field of aluminum alloy casting and heat treatment, andsolves the problems that defects exist in a casting forming ZL101A aluminum alloy material, the fatigue performance of the material is affected, the heat treatment is carried out separately after hotisostatic pressing, many production processes are needed, and the period is long in the prior art. The hot isostatic pressing treatment process method for the casting forming ZL101A aluminum alloy comprises the following steps of step 1, casting ZL101A aluminum alloy castings; and step 2, carrying out hot isostatic pressing treatment on the ZL101A aluminum alloy castings in hot isostatic pressingequipment, wherein the step of carrying out hot isostatic pressing treatment comprises the steps of sequentially carrying out heating and boosting, high-temperature-segment heat preservation and pressure maintaining, pressure maintaining and quick cooling, low-temperature-segment heat preservation and pressure maintaining and cooling and depressurization. According to the method, the improvementof the strength and the anti-fatigue mechanical property of the ZL101A aluminum alloy material is realized, the production cycle of the conventional hot isostatic pressing treatment casting aluminum alloy is shortened, and the production cost is saved.

Description

[0001] The invention relates to the technical field of aluminum alloy casting and heat treatment, in particular to a hot isostatic pressing process method for casting a ZL101A aluminum alloy. Background technique [0002] With the rapid development of the manufacturing industry, the requirements for the strength, toughness and fatigue resistance of materials are getting higher and higher. In high-precision fields such as aerospace, traditional casting, solid solution, and aging processes often cannot meet the requirements of materials. Hot isostatic pressing is required to eliminate defects such as porosity and pores in castings to further improve the comprehensive mechanical properties of materials. . The hot isostatic pressing process is to place the product in a closed container, use nitrogen, argon and other inert gases as the pressure transmission medium, and apply equal pressure in all directions to the product under the combined action of high temperature and high press...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22F1/043C22C1/03C22C1/06C22C21/04
CPCC22C1/03C22C1/06C22C21/04C22F1/043
Inventor 车立达陈硕李好峰戚雯翟一多吕周晋李向阳
Owner 钢研昊普科技有限公司
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