Process of preparing aluminum alloy

Patent metadata

Field	Value
Publication number	US-9677157-B2
Application number	US-201514636913-A
Country	US
Kind code	B2
Filing date	Mar 3, 2015
Priority date	Mar 5, 2014
Publication date	Jun 13, 2017
Grant date	Jun 13, 2017

Abstract

A process of preparing an aluminum alloy includes the following steps: first adding and completely melting a ZL101 Al-Si ingot and then covering the melt next adding one of modifiers Te and Sb and then performing heat preservation; finally adding one or more of rare earth elements La, Ce, Y and transition metal element Hf and then performing heat preservation. The ZL101 Al-Si alloy melt after the treatments can be casted into an ingot or a part after refining.

First claim

The invention claimed is:

1. A process of preparing an aluminum alloy comprising:
melting a ZL101 Al-Si alloy, and after the ZL101 Al-Si alloy is completely melted covering the melt, wherein the melting of the ZL101 Al-Si alloy comprises placing 10 Kg of the ZL101 Al-Si alloy into a crucible for melting;
adding a modifier Te accounting for 0.1% of the mass of the melt of the ZL101 Al-Si alloy when the temperature of the melt reaches 680° C., and performing heat preservation for 15 minutes;
adding a rare earth element La accounting for 0.1% of the mass of the melt of the ZL101 Al Si alloy when the temperature of the melt reaches 700° C., and then performing heat preservation for 5 minutes; and
refining the melt and then pouring the melt into a mold.

2. A process of preparing an aluminum alloy comprising:
melting a ZL101 Al-Si alloy, and after the ZL101 Al-Si alloy is completely melted covering the melt, wherein the melting of the ZL101 Al-Si alloy comprises placing 10Kg of the ZL101 Al-Si alloy into a crucible for melting;
adding a modifier Sb accounting for 0.5% of the mass of the melt of the ZL101 Al-Si alloy when the temperature of the melt reaches 740° C., and performing heat preservation for 60 minutes;
adding rare earth elements La, Ce, Y and transition metal element Hf accounting for 0.3%, 0.3%, 0.2% and 0.2% respectively of the mass of the melt of the ZL101 Al-Si alloy when the temperature of the melt reaches 730° C., and performing heat preservation for 15 minutes; and
refining the melt and then pouring the melt into a mold.

3. A process of preparing an aluminum alloy comprising:
melting a ZL101 Al-Si alloy, and after the ZL101 Al-Si alloy is completely melted covering the melt, wherein the melting of the ZL101 Al-Si alloy comprises placing 10Kg of the ZL101 Al-Si alloy into a crucible for melting;
adding modifiers Te and Sb accounting for 0.2% and 0.1% respectively of the mass of the melt of the ZL101 Al-Si alloy when the temperature of the melt reaches 710° C., and performing heat preservation for 40 minutes;
adding rare earth elements La and Y accounting for 0.2% and 0.3% respectively of the mass of the melt of the ZL101 Al-Si alloy when the temperature of the melt reaches 715° C., and performing heat preservation for 10 minutes; and
refining the melt and then pouring the melt into a mold.

Assignees

• Wang Lisheng
• Zhang Zhendong
• Liu Chunhai
• Wang Yongning
• Zhu Zhihua
• Li Changhai
• Citic Dicastal Co Ltd

Inventors

• Wang Lisheng
• Zhang Zhendong
• Liu Chunhai
• Wang Yongning
• Zhu Zhihua
• Li Changhai

Classifications

• C22C21/02

  with silicon as the next major constituent · CPC title

• C22C1/026 Primary

  Alloys based on aluminium · CPC title

• C22C21/04

  Modified aluminium-silicon alloys · CPC title

• B22D21/007

  with low melting point, e.g. Al 659 degrees C, Mg 650 degrees C · CPC title