Leadless easy cutted brass ally material and its manufacturing method

A technology of brass alloy and manufacturing method, applied in the field of brass alloy, can solve problems such as dezincification corrosion, achieve the effects of improving corrosion resistance, improving cutting performance and plating resistance, and compensating for embrittlement effect

Inactive Publication Date: 2003-12-17
SAN ETSU METALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, when used as a part in contact with water, there is a problem of dezincification c

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] The embodiment is to hot extrude (750° C.) the ingot (cylindrical shape with an outer diameter of 60 mm and a length of 200 mm) of the composition in Table 1 into a round bar with an outer diameter of 16 mm, carry out heat treatment at 580° C. for 4 hours, and use 50° C. / hour Cooling rate Furnace cold. Then carry out cold drawing to make a 15mm round bar. The comparative alloy material (Table 2) was also processed and formed in the same way.

[0033] Sample No.

Cu

Zn

Bi

Al

sn

P

Pb

Remark

1

61.14

Bal

1.86

0.02

0.75

0.05

0.05

2

61.48

Bal

1.82

0.01

0.97

0.08

0.09

3

61.20

Bal

2.05

0.03

0.55

0.09

0.05

4

60.21

Bal

1.80

0.04

0.89

0.04

0.06

5

61.26

Bal

1.86

0.02

0.82

0.06

0.05

6

61....

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PUM

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Abstract

An easily cutted lead-free brass alloy is prepared from Cu (60-62 wt.%), Bi (0.5-2.2), Al (0.01-0.1), Sn (0.5-1.6), P (0.04-0.15) and Zn (rest) through heat treating at 460-600 deg.C for 30 min-4 hr, and slow cooling at speed lower than 70 deg.C/hr.

Description

technical field [0001] The invention relates to a lead-free brass alloy, and relates to a lead-free free-cutting brass alloy material with excellent cutting performance, corrosion resistance, thermal processing performance and mechanical performance and its manufacturing method. Background technique [0002] Examples of brass alloys excellent in machinability include "JIS H3250 C3601", "JIS H3250 C3604", and "JIS H3250 C3771". These brass alloys ensure cutting performance by containing 1.0 to 3.7% by weight of lead. [0003] Lead-containing brass alloy materials are currently used as structural materials for many products (such as faucet fittings for general piping, valve stems, etc.) due to their excellent cutting performance. In addition, when used as a part in contact with water, there is a problem of dezincification corrosion, and for this reason, dezincification-resistant brass alloys have been increasingly used in recent years. [0004] As a conventional dezincificat...

Claims

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Application Information

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IPC IPC(8): C22C9/00
Inventor 钓谷宏行
Owner SAN ETSU METALS
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