Method for manufacturing complex copper-zinc alloy

A manufacturing method, zinc alloy technology, applied in the field of copper-zinc alloy, can solve the problems that affect the bending and machinability of the alloy, and achieve the effect of improving stability, strength and toughness, simple process operation and equipment requirements

Active Publication Date: 2012-07-25
东莞市发斯特精密科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] A small amount of multi-component strengthening is a way to improve the performance of alloys. However, since the α-phase and β-phase in special copper-zinc alloys are multi-component complex solid solutions, plus the possible γ-phase, a small amount of elements exist at the same time. On the one hand, it may improve the corrosion resistance and strength properties of the alloy, on the other hand, it will increase the brittleness of the material and affect the bending and machinability of the alloy.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 1) To obtain materials, select raw materials with the following chemical composition weight percentages:

[0030] Zn: 28%, C: 0.02%;

[0031] Mn: 2.1%; Si: 0.15%,

[0032] Nb: 0.04%, Ti: 0.02%,

[0033] V: 0.05%, Mo: 0.1%,

[0034] Cr: 0.55%, Al: 0.06%

[0035] The rest is Cu and impurities;

[0036] 2) Melting the above materials in a 5t bell-type resistance furnace, degassing and removing slag during the melting process, so as to carry out high-cleanliness refining;

[0037] 3) cast alloy mold;

[0038] 4) Uniform annealing at about 440°C for 24 hours;

[0039] 5) Process the as-cast alloy into a columnar test piece of 10mm×10mm×40mm by wire cutting; 6) Perform surface pretreatment on the cut test piece, and evenly coat the surface with solid lubricant;

[0040] 7) Then put it into the mold and preheat it to 500°C for 30 minutes, and then apply pressure for 7-10 consecutive passes of equal-channel angular extrusion. The sample is rotated 180° between adjacent e...

Embodiment 2

[0046] 1) To obtain materials, select raw materials with the following chemical composition weight percentages:

[0047] Zn: 30%, C: 0.03%;

[0048] Mn: 2.3%; Si: 0.20%,

[0049] Nb: 0.06%, Ti: 0.04%,

[0050] V: 0.09%, Mo: 0.4%,

[0051] Cr: 0.65%, Al: 0.10%

[0052] The rest is Cu and impurities;

[0053]2) Melting the above materials in a 5t bell-type resistance furnace, degassing and removing slag during the melting process, so as to carry out high-cleanliness refining;

[0054] 3) cast alloy mold;

[0055] 4) Uniform annealing at about 460°C for 24 hours.

[0056] 5) Process the as-cast alloy into a columnar test piece of 10mm×10mm×40mm by wire cutting; 6) Perform surface pretreatment on the cut test piece, and evenly coat the surface with solid lubricant;

[0057] 7) Then put it into the mold and preheat it to 500°C for 30 minutes, and then apply pressure for 7-10 consecutive passes of equal-channel angular extrusion. The sample is rotated 180° between adjacent ex...

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PUM

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Abstract

The invention relates to a method for manufacturing a complex copper-zinc alloy, which comprises the following steps: collecting materials, and selecting Zn, C, Mn, Si, Nb, Ti, V, Mo, Cr, Al and Cu in a certain proportion; placing the above materials in a 5t cover-type resistance furnace for smelting; degassing and deslagging in the smelting process, and carrying out high cleanliness refining; casting into a casting mold of an alloy; annealing for 24 hours at a temperature of 440-460 DEG C; processing an as-cast alloy into a column-shaped test piece by linear cutting; carrying out surface preprocessing on the cut test piece, and uniformly coating a solid lubricant on the surface of the cut test piece; continuously carrying out equal channel angular pressing on the cut test piece for 7-10 times; placing the test piece subjected to the equal channel angular pressing into an annealing furnace to be heated to 600 DEG C, and holding the temperature for 30 minutes; and taking out the test piece and carrying out oil quenching to the room temperature. The method provided by the invention is characterized in that crystal particles and second phase distribution shapes of Cu-Zn alloys are further refined, and the stability, the strength and the toughness of the alloy are improved; and the process operation and the equipment requirements are simple.

Description

technical field [0001] The invention relates to a copper-zinc alloy, in particular to a method for manufacturing a complex copper-zinc alloy with good stability. [0002] Background technique [0003] In the existing technology, various projects and workplaces are inseparable from automation equipment. Some special occasions have strict requirements on the temperature of the equipment during work. Material: Copper has very high thermal conductivity, but the reserves of copper are limited, and the price has been rising in recent years, which increases the production cost. Therefore, in actual production, copper-zinc alloy is often used as a substitute. [0004] Ordinary copper-zinc alloys are based on copper, with zinc as the main additive element. They have a beautiful yellow color. Copper-zinc alloys also have good heat dissipation performance. Compared with pure Cu, they are cheaper and have certain mechanical properties. be widely used. Ordinary copper-zinc binar...

Claims

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Application Information

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IPC IPC(8): C22C9/04C22C1/02C22F1/08
Inventor 朱春来
Owner 东莞市发斯特精密科技股份有限公司
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