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A kind of high-strength aluminum-brass alloy and heat treatment method thereof

An aluminum brass, high-strength technology, applied in the field of copper alloys, can solve the problems of improving the mechanical properties of materials, such as technological methods, to achieve the effects of reducing residual stress, high comprehensive mechanical properties, and improving operational reliability

Active Publication Date: 2021-04-13
CHONGQING YUEJIN MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After consulting the relevant literature, the ZCu25Al6Fe3Mn3 material is used in the casting state, and there is no process based on the heat treatment method related to the aluminum brass material to improve the mechanical properties of the material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment one, a kind of high-strength aluminum-brass alloy comprises the following components by weight percentage: 22.5% of Zn, 5.4% of Al, 2.96% of Fe, 3.88% of Mn, 2% of Ni, and the balance is Cu.

[0021] A heat treatment method for a high-strength aluminum-brass alloy, comprising the steps of:

[0022] Step 1, casting, put each component into the furnace to heat and melt according to the above-mentioned alloy component distribution ratio, after each component is melted, raise the temperature to 1200±5°C to make the alloy components uniform, and stand for 5 minutes after removing slag ~10min, out of the furnace and cast at a temperature of 1050~1100°C to obtain a casting.

[0023] Step 2, heating, heating the casting to 830°C and keeping it warm for 2 hours.

[0024] Step 3, cooling, cooling to 450°C with the furnace, the cooling rate in the furnace is controlled at 50-100°C / h, and then air-cooled after being out of the furnace;

[0025] Step 4, stress relief t...

Embodiment 2

[0027] Embodiment two, a kind of high-strength aluminum-brass alloy comprises the following components by weight percentage: 25% of Zn, 5.51% of Al, 2.69% of Fe, 3.46% of Mn, 1.9% of Ni, and the balance is Cu.

[0028] A heat treatment method for a high-strength aluminum-brass alloy, comprising the steps of:

[0029] Step 1, casting, put each component into the furnace to heat and melt according to the above-mentioned alloy component distribution ratio, after each component is melted, raise the temperature to 1200±5°C to make the alloy components uniform, and stand for 5 minutes after removing slag ~10min, out of the furnace and cast at a temperature of 1050~1100°C to obtain a casting.

[0030] Step 2, heating, heating the casting to 820°C and keeping it warm for 2 hours.

[0031] Step 3, cooling, cooling to 500°C with the furnace, the cooling rate in the furnace is controlled at 50-100°C / h, and then air-cooled after being out of the furnace;

[0032] Step 4, stress relief ...

Embodiment 3

[0034] Embodiment three, a high-strength aluminum-brass alloy comprises the following components by weight percentage: 25.4% of Zn, 5.51% of Al, 2.74% of Fe, 3.65% of Mn, 1.96% of Ni, and the balance is Cu.

[0035] A heat treatment method for a high-strength aluminum-brass alloy, comprising the steps of:

[0036] Step 1, casting, put each component into the furnace to heat and melt according to the above-mentioned alloy component distribution ratio, after each component is melted, raise the temperature to 1200±5°C to make the alloy components uniform, and stand for 5 minutes after removing slag ~10min, out of the furnace and cast at a temperature of 1050~1100°C to obtain a casting.

[0037] Step 2, heating, heating the casting to 840°C and keeping it warm for 3 hours.

[0038] Step 3, cooling, cooling to 550°C with the furnace, the cooling rate in the furnace is controlled at 50~100°C / h, and then water cooling after being out of the furnace;

[0039] Step 4, stress relief ...

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Abstract

The invention discloses a high-strength aluminum-brass alloy, which comprises the following components by weight percentage: 23-26% of Zn, 5-6% of Al, 2.7-3.5% of Fe, 3.2-4% of Mn, 1-2% Ni, the balance being Cu; the weight ratio of Al and Fe is 1.6-2.2; the sum of the weight percentages of Al and Ni is 6.5-8.0%. The invention also discloses a high-strength aluminum-brass alloy heat treatment method, which includes the following steps: step 1, casting, putting each component into a furnace for heating, melting and casting according to the above-mentioned alloy component distribution ratio, to obtain a casting; Step 2, heating, heating the casting to 800~840°C, and keeping it warm for 1.5~3h; Step 3, cooling, cooling down to 550°C or below with the furnace, and then taking it out of the furnace for water cooling or air cooling; Step 4, stress relief treatment, at a temperature of Keep warm for 1~1.5h under the condition of 180~230℃. On the premise of ensuring the tensile strength of the alloy, it improves the elongation of the alloy, makes the alloy have higher comprehensive mechanical properties, and improves the operational reliability of the product.

Description

technical field [0001] The invention relates to a copper alloy, in particular to a high-strength aluminum-brass alloy and a heat treatment method thereof. Background technique [0002] High-strength aluminum brass has high strength, hardness, good wear resistance and corrosion resistance, and is mainly used for low-speed heavy-duty bearings and stressed structural parts. [0003] ZCu25Al6Fe3Mn3 material is a common cast copper alloy, which is used for the crosshead copper sleeve of the plunger fracturing pump on petroleum machinery. It belongs to the application occasion of low speed and heavy load, and requires mechanical properties. Tensile strength Rm≥800MPa, yield limit Rp 0.2 ≥500MPa, Elongation A 5 ≥12%, due to the large operating load of the workpiece, if the mechanical properties are insufficient during use, the probability of failure will increase, thereby reducing the reliability of the entire equipment operation. [0004] Through the optimization of alloying ele...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C9/04C22F1/08
CPCC22C9/04C22F1/08
Inventor 唐龙兵赵光平阳薪禄古昌富
Owner CHONGQING YUEJIN MACHINERY