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A kind of al-cu-si-ni-mg-ti-bi aluminum base alloy solder and preparation method thereof

An al-cu-si-ni-mg-ti-bi, aluminum-based alloy technology, applied in metal processing equipment, welding equipment, manufacturing tools, etc., can solve the problems of poor corrosion resistance and brazing process, and achieve The effect of good brazing process, promoting wettability and improving joint strength

Active Publication Date: 2022-01-04
BEIJING INST OF NONFERROUS METALS & RARE EARTH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Al-Si-Cu, Al-Si-Ge, Al-Si-Zn, Al-Ag-Ge, Al-Ag-Cu, etc. are known to be brittle and are only suitable for casting bars and difficult to process. Foil-shaped solder, but poor corrosion resistance and brazing process

Method used

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  • A kind of al-cu-si-ni-mg-ti-bi aluminum base alloy solder and preparation method thereof
  • A kind of al-cu-si-ni-mg-ti-bi aluminum base alloy solder and preparation method thereof
  • A kind of al-cu-si-ni-mg-ti-bi aluminum base alloy solder and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Embodiment 1 prepares Al-Cu-Si-Ni-Mg-Ti-Bi aluminum-based alloy state foil-shaped solder (1)

[0052] Step 1: Ingredients

[0053] Take Al-Cu5022kg, Al-Si3010kg, Al-Ti51kg, aluminum 15.25kg, nickel 1.25kg, magnesium 0.4kg, bismuth 0.1kg.

[0054] Step 2: Alloy Casting

[0055] 1) Equipment: 150kg medium frequency induction furnace;

[0056] 2) Mold: Φ80×300mm water-cooled steel mold;

[0057] 3) Ingredients: the added return material shall not exceed 30% of the furnace capacity;

[0058] 4) Operation: Put the pure aluminum into the graphite crucible of the intermediate frequency induction furnace, raise the temperature, and after the aluminum ingot is completely melted, add Al-Cu, Al-Si, Al-Ti master alloy and pure nickel strip in turn, wait for the master alloy and After the nickel is completely melted, raise the temperature to 750°C and keep it warm for 15 minutes. Use a graphite cover to press hexachloroethane into the bottom of the alloy liquid and stir for dega...

Embodiment 2

[0071] Example 2 Preparation of Al-Cu-Si-Ni-Mg-Ti-Bi Aluminum-Based Alloy State Foil-shaped Solder (2)

[0072] Step 1: Ingredients

[0073] Take Al-Cu5028.5kg, Al-Si3017.5kg, Al-Ti50.75kg, aluminum 26.6kg, nickel 0.75kg, magnesium 0.75kg, bismuth 0.15kg.

[0074] Step 2: Alloy Casting

[0075] 1) Equipment: 150kg medium frequency induction furnace;

[0076] 2) Mold: Φ80×300mm water-cooled steel mold;

[0077] 3) Ingredients: the added return material shall not exceed 30% of the furnace capacity;

[0078] 4) Operation: Put the pure aluminum into the graphite crucible of the intermediate frequency induction furnace, raise the temperature, and after the aluminum ingot is completely melted, add Al-Cu, Al-Si, Al-Ti master alloy and pure nickel strip in turn, wait for the master alloy and After the nickel is completely melted, raise the temperature to 780°C and keep it warm for 12 minutes. Use a graphite cover to press hexachloroethane into the bottom of the alloy liquid and st...

Embodiment 3

[0090] Example 3 Preparation of Al-Cu-Si-Ni-Mg-Ti-Bi Aluminum-Based Alloy State Foil-shaped Solder (3)

[0091] Step 1: Ingredients

[0092] Take Al-Cu5040kg, Al-Si3018.33kg, Al-Ti53kg, aluminum 36.02kg, nickel 2kg, magnesium 0.5kg, bismuth 0.15kg.

[0093] Step 2: Alloy Casting

[0094] 1) Equipment: 150kg medium frequency induction furnace;

[0095] 2) Mold: Φ80×300mm water-cooled steel mold;

[0096] 3) Ingredients: the added return material shall not exceed 30% of the furnace capacity;

[0097] 4) Operation: Put the pure aluminum into the graphite crucible of the intermediate frequency induction furnace, raise the temperature, and after the aluminum ingot is completely melted, add Al-Cu, Al-Si, Al-Ti master alloy and pure nickel strip in turn, wait for the master alloy and After all the nickel is melted, raise the temperature to 800°C and keep it warm for 10 minutes. Use a graphite cover to press hexachloroethane into the bottom of the alloy liquid and stir to degas an...

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Abstract

An Al-Cu-Si-Ni-Mg-Ti-Bi aluminum-based alloy solder and a preparation method thereof, the solder is composed of the following components: Cu 15-25wt%, Si 5-7wt%, Ni 1- 5wt%, Mg 0.3~1.0wt%, Ti 0.05~0.2wt%, Bi 0.1~0.3wt%, Al balance, the brazing filler metal has low melting temperature, good brazing processability, good wettability, welding rate and mechanical properties. The preparation method adopts the steps of "melting casting-centrifugal casting-superplasticizing treatment-isothermal rolling-cold rolling", which is simple and beneficial to mass production. The method can be used to prepare foil-shaped solder with a thickness of 0.03mm, which is suitable for vacuum brazing of various aluminum alloy components and vacuum brazing of aluminum-copper heterogeneous metal components.

Description

technical field [0001] The invention relates to an Al-Cu-Si-Ni-Mg-Ti-Bi aluminum-based alloy foil-shaped solder and a preparation method thereof, which is mainly used for vacuum brazing of aluminum-copper heterogeneous metals, and can also be used with aluminum-based medium-temperature solder The method realizes graded brazing of aluminum alloys and at the same time fills the defect of poor wettability of aluminum-based low-temperature solder, and belongs to the technical field of metallurgy and calendering. Background technique [0002] Brazing refers to using a metal whose liquidus temperature is lower than the solidus temperature of the base metal as the solder, heating the parts and the solder until the solder melts, using the solder to wet the base metal, filling the joint gap and interacting with the base metal A method of joining parts by dissolution and diffusion. Copper-aluminum dissimilar metal joints can be applied to many industrial fields, such as electrical en...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/28B23K35/40B23K35/14
CPCB23K35/0233B23K35/286B23K35/40
Inventor 唐超黄晓猛祁宇张国清王炜元琳琳
Owner BEIJING INST OF NONFERROUS METALS & RARE EARTH
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