High-strength brass alloy

A brass alloy, high-strength technology, applied in the field of high-strength brass alloys, can solve the problems of low mechanical properties, high price, and can only be used as advanced components, and achieves high alloy strength, low price, and good cold and hot processing performance. Effect

Active Publication Date: 2008-07-09
NINGBO POWERWAY ALLOY MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, a large number of brass and tin phosphor bronze are used. The biggest advantage of brass is that the price is relatively cheap, but the disadvantage is that the mechanical properties are low, which affects the reliability and life of the componen...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Using the iron mold casting process, the alloy is smelted in a clay crucible in a 10kg medium frequency induction furnace, covered with charcoal, and iron mold is cast into an ingot of Φ60mm×250mm. Each furnace is 7kg, and the alloy composition is listed in Table 1.

[0012] Table 1, iron mold casting alloy composition (wt%)

[0013]

Example

Zn

Al

Ni

Cr

Zr

Cu and unavoidable

impurities

1

21.72

3.0

2.0

-

-

73.28

2

20.95

3.5

0.85

0.1

-

74.6

3

21.44

3.82

0.42

0.22

0.5

73.6

4

29

3.51

0.6

0.15

0.1

66.64

[0014] Melting process: Add Cu, Ni, and Al into the crucible, heat up and melt, these three elements are melted, choose whether to add Cr ...

Embodiment 2～4

[0018] The process steps are the same as in Example 1, and the alloy composition is shown in Table 1.

[0019] The properties of the alloy wire rods of Examples 1-4 produced by the iron mold ingot processing process are listed in Table 2.

[0020] Table 2. Properties of wire produced by iron mold casting

[0021] Material specification

Embodiment 5

[0023] The horizontal continuous casting process is adopted. The horizontal continuous casting is melted in a 300kg intermediate frequency furnace, and then poured into a 600kg holding furnace for drawing casting, and a continuous casting billet of Φ12mm is pulled out. The composition of the alloy is listed in Table 3.

[0024] Table 3. Horizontal continuous casting alloy composition (wt%)

[0025]

[0026] Drawing process of continuous casting slab: Φ11.6→Φ10.1→Φ9→Φ8.2→Φ7.5→shrinking Φ7.05→annealing at 650℃ / 150min→pickling→Φ6.0→Φ5.4→Φ4. 8→Annealing 650℃ / 150min→Pickling→Φ4.1→Φ3.5→Φ3.0→Bright annealing 650℃ / 150min→Pickling→(multi-mode wire drawing)Φ2.75 Φ2.55 Φ2.35 Φ2.2 Φ2.1 Φ1.90Φ1.80→bright annealing 640℃ / 150min→pickling→(multi-mode drawing)Φ1.6 Φ1.4 Φ1.25 Φ1.15Φ0.95 Φ0.85 Φ0.8→bright annealing 620℃ / 150min.

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PUM

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Abstract

The invention relates to a high-intensity brass alloy, which is characterized in that the compositions of the weight percentage are that Zn is 15-30 percent, Al is 3.0-5.0 percent, Ni is 0.2-2.0 percent, Cr is 0-0.50 percent, Zr is 0-0.50 percent, the other content is Cu and inevitable impurity. The performance of the invention is higher or equivalent to phosphor bronze, the cost is low, and the invention is capable of replacing the phosphor bronze and partial beryllium bronze to prepare various elements. The invention guarantees the reliability, stability and long life of computers, aerospace and household appliance elements.

Description

technical field [0001] The invention relates to a high-strength brass alloy. Background technique [0002] The development of modern high technology puts forward higher requirements on the performance of materials, especially in today's information age, which requires high reliability, stability and long life of electronic components. To meet these requirements, materials must have high strength, high electrical conductivity, wear resistance, and corrosion resistance. At the same time, in order to compete in the market, materials are required to have a lower price. At present, a large number of brass and tin phosphor bronze are used. The biggest advantage of brass is that the price is relatively cheap, but the disadvantage is that the mechanical properties are low, which affects the reliability and life of the components; the tin phosphor bronze has medium mechanical properties and can meet the requirements of general components. But they are relatively expensive; beryllium...

Claims

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Application Information

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IPC IPC(8): C22C9/04
Inventor 潘奇汉梁梅玲孟祥鹏吴宝镇
Owner NINGBO POWERWAY ALLOY MATERIAL
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