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Low leaded brass alloy

A brass alloy and lead brass technology, applied in the field of low-lead free-cutting brass alloys, can solve the problems of lead brass polluting the environment, endangering human health, and harsh use environments

Active Publication Date: 2014-08-27
ZHUHAI SEAGULL KITCHEN & BATH PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, brass with high content of lead pollutes the environment during use, especially various valves and faucets used in water supply systems have lead leaching during use, which seriously endangers human health.
[0003] In addition, as environmental problems become more and more prominent, the use environment is more severe, which reduces the surface strength of brass products, or even causes brass tubes to perforate, greatly shortens the service life of brass products, and causes problems in application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Invention 1 with 5 different components prepared according to the above process is shown in Table 1-1, numbered 1001-1005 respectively, and the unit of each component is weight percent (wt%).

[0027] Table 1-1

[0028] Numbering

Copper (Cu)

Zinc (Zn)

Lead (Pb)

Bismuth (Bi)

1001

59.650

39.653

0.055

0.640

1002

60.305

39.093

0.100

0.500

1003

61.000

37.748

0.000

1.250

1004

59.000

39.618

0.080

1.300

1005

60.032

39.028

0.093

0.845

[0029] The alloys of the above components are tested in the form of casting at room temperature for cutting performance, dezincification resistance, tensile strength and elongation. The comparison sample is leaded brass with the same state and specifications, that is, C36000 alloy .

[0030] The experimental results of tensile strength, elongation, cutting performance and dezincification resistance a...

Embodiment 2

[0033] Invention 2 with 5 different components prepared according to the above-mentioned process in Table 2-1 is numbered 2001-2005 respectively, and the unit of each component is weight percent (wt%).

[0034] table 2-1

[0035] Numbering

Copper (Cu)

Zinc (Zn)

Lead (Pb)

Bismuth (Bi)

Iron (Fe)

Aluminum (AL)

Tin (Sn)

Nickel (Ni)

2001

60.340

38.858

0.100

0.500

0.000

0.050

0.150

0.000

2002

59.000

39.684

0.085

0.854

0.100

0.020

0.000

0.255

2003

60.221

38.286

0.000

1.110

0.051

0.000

0.200

0.130

2004

59.870

32.662

0.013

1.300

0.085

0.000

0.132

0.300

[0036] 2005

61.000

37.438

0.050

0.995

0.080

0.040

0.143

0.252

[0037] The alloys of the above components are tested in the form of casting at room temperature for cutting performance, d...

Embodiment 3

[0041] Invention 3 with 5 different components prepared according to the above-mentioned process in Table 3-1 is numbered 3001-3005 respectively, and the unit of each component is weight percent (wt%).

[0042] Table 3-1

[0043] Numbering

Copper (Cu)

Zinc (Zn)

Lead (Pb)

Bismuth (Bi)

Iron (Fe)

Aluminum (AL)

Tin (Sn)

Nickel (Ni)

3001

59.145

39.963

0.000

0.670

0.000

0.050

0.155

0.015

3002

59.000

40.104

0.006

0.500

0.054

0.034

0.000

0.300

3003

60.240

38.370

0.065

1.112

0.011

0.000

0.200

0.000

3004

61.000

37.081

0.100

1.300

0.100

0.050

0.112

0.255

3005

60.081

38.327

0.073

1.000

0.095

0.025

0.181

0.216

[0044] The alloys of the above components are tested in the form of casting at room temperature for cutting performance, dezincification resi...

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Abstract

The invention relates to a low leaded brass alloy which comprises the following components by weight percent: 59%-61% of copper, 0%-0.1% of lead, 0.5%-1.3% of bismuth, 0%-0.1% of iron, 0%-0.05% of aluminum, 0%-0.2% of tin, 0%-0.3% of nickel and the balance of zinc.

Description

technical field [0001] The invention relates to a low-lead brass alloy, in particular to a low-lead free-cutting brass alloy. Background technique [0002] Copper has excellent electrical conductivity and environmental friendliness, and germs harmful to humans cannot survive on its surface. In order to improve the performance of copper materials, other elements are added to copper, such as adding lead to copper-zinc brass, which greatly improves Brass machinability. However, brass with high content of lead pollutes the environment during use, especially various valves and faucets used in water supply systems have lead leaching during use, which seriously endangers human health. [0003] In addition, as environmental problems become more and more prominent, the use environment is more severe, which reduces the surface strength of brass products, and even causes brass tubes to perforate, greatly shortening the service life of brass products and causing problems in application...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/04
CPCC22C9/04
Inventor 唐台英
Owner ZHUHAI SEAGULL KITCHEN & BATH PROD