Method for manufacturing cast aluminum alloy

A technology for casting aluminum alloys and manufacturing methods, which is applied in the field of manufacturing high-strength and high-hardness casting aluminum alloys, can solve problems such as poor casting performance and mechanical properties of aluminum alloys, and achieve the effects of good casting performance, high strength and hardness

Inactive Publication Date: 2010-06-23
SHANGHAI SPACE PRECISION MACHINERY RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem of poor casting performance and mechanical properties of aluminum alloys in the prior art, the object of the present invention is to provide a method for manufacturing cast aluminum alloys

Method used

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Examples

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Embodiment Construction

[0031] Embodiments of the present invention are described in detail below.

[0032] The embodiment of the present invention takes smelting 200kg cast aluminum alloy raw material as an example, the method comprises the following steps:

[0033] Step 1: Ingredients, including:

[0034] 1-1. According to alloy chemical composition requirements and element burning law, calculate the required percentage of each element as follows (wt%): 7Si, 4Cu, 0.2Mn, 0.15Cd, 0.15Ti, and the balance is Al.

[0035] 1-2. Calculate the weight of each element required for 200kg of raw materials based on the required percentage of each element. Si: 14kg; Cu: 8kg; Mn: 0.4kg; Cd: 0.3kg; Ti: 0.3Kg; Al: 177kg.

[0036] 1-3. Raw materials Al, Al-12wt% Si, Al-50wt% Cu, Al-10wt% Mn, Cd, Al-5wt% Ti were used. Calculate the weight of the respective ingredients. Al-12wt%Si: 117kg; Al-50wt%Cu: 16kg; Al-10wt%Mn: 4kg; Cd: 0.3kg; Al-5wt%Ti: 6kg; Al: 56.7kg.

[0037] Step 2: Smelting, including:

[0038] 2-1....

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Abstract

The invention discloses a method for manufacturing cast aluminum alloy, comprising the steps: 1, batching: calculating the content and the weight of elements and the weight of batched raw materials; 2: smelting: preheating to 400-450 DEG C, preheating a crucible to 500-600 DEG C, adding in sequence pure Al, Al-Si, Al-Cu, Al-Mn and Al-Ti, adding a small amount of Al-Ti-B and Al-Be; refining and modification; 3: pouring: using a sand mould to adjust the temperature of alloy melt to 710 DEG C and pouring; 4: heat treatment and solution treatment: water cooling; aging treatment and air cooling. Solving the problem of poor casting performance of aluminum alloy, the method obtains the effect of high strength and hardness and excellent casting performance of the cast aluminum alloy.

Description

technical field [0001] The invention relates to a method for manufacturing a cast alloy material, in particular to a method for manufacturing a high-strength and high-hardness cast aluminum alloy. Background technique [0002] At present, the widely used aluminum-silicon alloy has excellent casting properties, such as good fluidity, good air tightness, small shrinkage rate and small thermal cracking tendency, and has good mechanical properties after modification and heat treatment. A wide class of aluminum alloys, such as ZL101 and ZL104 alloys, still face the problem of mechanical properties to be improved. [0003] The aluminum-copper alloy contains 3-11% copper, which greatly improves the mechanical properties of the alloy at room temperature and high temperature. For example, the ZL205A alloy is one of the highest strength aluminum alloys in the world, with a tensile strength of 490Mpa. There are also alloys such as ZL206, ZL207, and ZL208, which have good heat resistan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/03C22B21/06B22D25/06C22F1/043C22C21/02
Inventor 李宝辉李利平罗建王小冬陈斌
Owner SHANGHAI SPACE PRECISION MACHINERY RES INST
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