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High-strength wear-resistant brass alloy and preparation method thereof

A brass alloy, high-strength technology, applied in the field of metal alloy materials, can solve problems such as poor mechanical properties, corrosion resistance, poor high temperature hot crack resistance, unsatisfactory cold working properties of alloys, and decreased corrosion resistance.

Active Publication Date: 2021-03-19
宁波正元铜合金有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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  • High-strength wear-resistant brass alloy and preparation method thereof
  • High-strength wear-resistant brass alloy and preparation method thereof
  • High-strength wear-resistant brass alloy and preparation method thereof

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] 2.8% of Ni;

[0081] Fe 1.5%;

[0082] PB 0.1%;

[0083] Zn and inevitable impurity balance.

[0084] among them,

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

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

[0087] fly 3 = P Ni × P Fe = 0.42 ‰.

[0088]Take copper powder, copper manganese, cobalt powder, pink manganese, aluminum powder, nickel powder, iron powder, lead powder, and zinc powder, melting copper powder, lead powder and zinc powder; molten alloy in copper powder and copper manganese, followed by melting point after heating High to low additional components and the first melting is carried out to obtain the first alloy fluid; the first alloy fluid is added to the first alloy liquid and the aluminum powder for the second melt refining to obtain a second alloy fluid; a phosphorus copper r...

Embodiment 2

[0106] Example 2 provides a series of brass alloys, rejected, 2 # ~ 12 #; Example 1 The brass alloy is 1 #, the detailed matching content is as shown in Table 1.

[0107] Table 1, brass alloy coordination content

[0108]

[0109] The series of brass alloys described in this Example 2 # to 12 #, is prepared by the same method as in Example 1, i.e., the aging treatment temperature is 706 ° C, time 120 min; tensile temperature is 680 ° C, stretching The rate is 1 mm / min; the low temperature annealing temperature is 283 ° C.

Embodiment 3

[0111] Example 3 provides a high strength wear-resistant brass alloy, rejected as 13 #:

[0112] Cu 58.5%;

[0113] Mn 2.7%;

[0114] CO 0.8%;

[0115] Si 3.2%;

[0116] Al 3.6%;

[0117] 2.8% of Ni;

[0118] Fe 1.5%;

[0119] PB 0.1%;

[0120] Zn and inevitable impurity balance.

[0121] among them,

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

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

[0124] fly 3 = P Ni × P Fe = 0.42 ‰.

[0125] Take copper powder, copper manganese, cobalt powder, pink manganese, aluminum powder, nickel powder, iron powder, lead powder, and zinc powder, melting copper powder, lead powder and zinc powder; molten alloy in copper powder and copper manganese, followed by melting point after heating High to low additions, the first melting 20min was carried out at 1225 ° C for 20 min to obtain the first alloy fluid; zinc powder and aluminum powder were added to the first alloy fluid, and the second smelting of 15 min was carried out at 1150 ° C to obtain a sec...

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Abstract

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, and provides a brass alloy with excellent wear resistance, higher strength and higher hardness, which is formed by adding Cu, Mn, Co, Si, Pb, AL, Ni, Fe, Zn and other elements according to different proportions. The preparation methodof the high-strength wear-resistant brass alloy comprises the following steps of: weighing the components; carrying out first smelting, second smelting, degassing and deoxidizing, refining and third smelting on the weighed components; adjusting the components; slagging off the adjusted components; pouring the components to obtain a cast ingot; carrying out homogenization treatment hot rolling on the cast ingot; milling the surface of the cast ingot; carrying out aging treatment, stretching and low-temperature annealing on the cast ingot.

Description

Technical field [0001] The present invention relates to the technical field of metal alloy materials, particularly with respect to a high strength wear-resistant brass alloy and a preparation method thereof. Background technique [0002] The copper alloy is an alloy that is made of one or several other elements in pure copper, has good conductivity, thermal conductivity, ductility, and corrosion resistance. Commonly used copper alloys include brass, bronze, white copper. Among them, brass is copper alloy as a main addition element, high-intensity brass alloy has a wide range of applications worldwide, and there are currently less technical high-strength brass alloy models, such as China Zhal63-6-3-3 And ZHAL62-4-3-3, 4 to 6% aluminum, 3 to 4% iron, 3% manganese; US C86200 and C86300, 5 ~ 6% aluminum, 3% iron 3%, manganese 3%. These brass alloys are poor due to high aluminum and iron content, and their mechanical properties, corrosion resistance and high temperature crack performa...

Claims

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Application Information

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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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