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A kind of high-strength wear-resistant brass alloy and its preparation method

A brass alloy, high-strength technology, applied in the field of metal alloy materials, can solve the problems of high corrosion rate, affecting alloy processing performance, mechanical properties, corrosion resistance and poor high temperature hot cracking performance.

Active Publication Date: 2022-02-18
宁波正元铜合金有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the high content of aluminum and iron, these brass alloys have poor mechanical properties, corrosion resistance and high temperature thermal cracking resistance.
Moreover, the more prominent problem of these brass alloys is that the corrosion resistance drops sharply in the polluted atmosphere, steam, seawater and freshwater environment, and the corrosion rate is fast, which is very sensitive to the corrosive environment such as atmosphere, steam, seawater and freshwater. , greatly reducing the service life of components
[0003] Chinese patent ZL2004100158365 discloses a lead-free free-cutting antimony brass alloy, which is a copper-zinc-antimony alloy. Since the alloy contains antimony, although the cutting performance and corrosion resistance can be improved, the cold working performance of the alloy is not ideal , affecting the subsequent processing properties of the alloy

Method used

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  • A kind of high-strength wear-resistant brass alloy and its preparation method
  • A kind of high-strength wear-resistant brass alloy and its preparation method
  • A kind of high-strength wear-resistant brass alloy and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] This embodiment provides a high-strength wear-resistant brass alloy, including:

[0075] Cu 58.5%;

[0076] Mn 2.7%;

[0077] CO 0.8%;

[0078] Si 3.2%;

[0079] Al 3.6%;

[0080] Ni 2.8%;

[0081] Fe 1.5%;

[0082] Pb 0.1%;

[0083] Zn and unavoidable impurities.

[0084] in,

[0085] f 1 =P Mn / P Co =3.375;

[0086] f 2 =4×P Si / 28+3×P Al / 27=23.6%;

[0087] f 3 =P Ni ×P Fe =0.42‰.

[0088]Weigh copper powder, copper-manganese master alloy, cobalt powder, pure silicon, aluminum powder, nickel powder, iron powder, lead powder and zinc powder according to the proportion; smelt copper powder and copper-manganese master alloy, after heating up, follow the melting point from Add various components from high to low and perform the first smelting to obtain the first alloy liquid; add zinc powder and aluminum powder to the first alloy liquid for second smelting to obtain the second alloy liquid; add phosphor copper deoxidizer to the second alloy liquid for...

Embodiment 2

[0106] Example 2 provides a series of brass alloys respectively, which are marked as 2# to 12#;

[0107] Table 1. Proportion content of brass alloy

[0108]

[0109] The series of brass alloys described in Examples 2# to 12# are all prepared by the same method as in Example 1, that is, the aging treatment temperature is 706°C, and the time is 120min; the stretching temperature is 680°C, and the stretching temperature The speed is 1 mm / min; the low temperature annealing temperature is 283°C.

Embodiment 3

[0111] Embodiment 3 provides a kind of high-strength wear-resistant brass alloy, denoted as 13#:

[0112] Cu 58.5%;

[0113] Mn 2.7%;

[0114] CO 0.8%;

[0115] Si 3.2%;

[0116] Al 3.6%;

[0117] Ni 2.8%;

[0118] Fe 1.5%;

[0119] Pb 0.1%;

[0120] Zn and unavoidable impurities.

[0121] in,

[0122] f 1 =P Mn / P Co =3.375;

[0123] f 2 =4×P Si / 28+3×P Al / 27=23.6%;

[0124] f 3 =P Ni ×P Fe =0.42‰.

[0125] Weigh copper powder, copper-manganese master alloy, cobalt powder, pure silicon, aluminum powder, nickel powder, iron powder, lead powder and zinc powder according to the proportion; smelt copper powder and copper-manganese master alloy, after heating up, follow the melting point from Add each component from high to low, perform the first melting at 1225°C for 20 minutes to obtain the first alloy liquid; add zinc powder and aluminum powder to the first alloy liquid, and perform the second melting at 1150°C for 15 minutes to obtain the second alloy liqu...

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Abstract

The present invention relates to the technical field of metal alloy materials, in particular to a high-strength wear-resistant brass alloy and its preparation method, which provides elements such as Cu, Mn, Co, Si, Pb, AL, Ni, Fe, Zn added in different proportions, A brass alloy formed with excellent wear resistance, strong strength and hardness; its preparation method includes: weighing each component, first smelting, second smelting, degassing and deoxidation, refining, third smelting, adjustment Composition, slag removal, casting ingot, homogenization treatment hot rolling, face milling, aging treatment, stretching, low temperature annealing.

Description

technical field [0001] The invention relates to the technical field of metal alloy materials, in particular to a high-strength wear-resistant brass alloy and a preparation method thereof. Background technique [0002] Copper alloy is an alloy composed of pure copper as the base and adding one or several other elements. It has good electrical conductivity, thermal conductivity, ductility and corrosion resistance. Commonly used copper alloys include brass, bronze, and cupronickel. Among them, brass is a copper alloy with zinc as the main additive element. High-strength brass alloys are widely used in the world. At present, there are few models of high-strength brass alloys in the existing technology, such as China ZHAL63-6-3-3 And ZHAL62-4-3-3, containing 4-6% aluminum, 3-4% iron, and 3% manganese; American C86200 and C86300, containing 5-6% aluminum, 3% iron, and 3% manganese. Due to the high content of aluminum and iron, these brass alloys have poor mechanical properties, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C9/04C22C1/03
CPCC22C9/04C22C1/03
Inventor 王世民王明军杨标刘合力吴明英
Owner 宁波正元铜合金有限公司
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