CN103469004A

CN103469004A - Leadless copper alloy material

Info

Publication number: CN103469004A
Application number: CN2013103536891A
Authority: CN
Inventors: 谢章明
Original assignee: YORHE FLUID INTELLIGENT CONTROL CO Ltd
Current assignee: Zhejiang Yonghe Intelligent Control Technology Co., Ltd
Priority date: 2013-08-14
Filing date: 2013-08-14
Publication date: 2013-12-25
Anticipated expiration: 2033-08-14
Also published as: CN103469004B

Abstract

The invention provides a leadless copper alloy material, which is composed of the following components by mass percent: 63% of copper, 0.2% of lead, 0.2% of tin, 0.2% of iron, 0.3% of nickel, 0.2% of aluminium, 0.08% of arsenic, no more than 0.4% of inevitable impurities, and the balance being zinc. The invention has the advantages of environmental protection, high safety health coefficient; good thermal forming performance, cutting ability and dezincification resisting performance; good tensile strength and elongation percentage; the invention is especially suitable for producing valve, pipe fitting and various spare and accessory parts in the drinking water system, and is suitable for forging, machining, electroplating, polishing, welding and other technologies.

Description

A kind of Pb-free copper-alloy material

Technical field

The present invention relates to a kind of metallic substance technical field, refer to especially a kind of Pb-free copper-alloy material.

Background technology

At present, good due to performances such as the cutting of copper, stretchings, be widely applied in various industries, is particularly suitable for valve in potable water system, pipe fitting and various spare and accessory parts production thereof, the techniques such as suitable forging, machine add, plating, polishing, welding.Especially the equipment in potable water system, for the consideration of safety and health, necessarily require to use without lead bronze or Pb-free copper-alloy; Require must be less than specified standards without the Pb constituent content in lead bronze or Pb-free copper-alloy.Therefore, various in style without lead bronze on present market, as prior art, publication number is 101250641, patent name is a kind of leadless copper alloy for amiable cutting smithing, the weight percent that it is characterized in that its alloy consists of: Cu:57.5%-59.0%, Fe:0.05%-0.2%, Si:0.3%-0.4%, Bi:0.7%～1.2%, surplus is zinc and inevitable impurity, and Pb :≤0.05, Sn :≤0.2%, Ni :≤0.2%.But the performance of the Bi in current material, Si element meeting material, the Bi element can make material easily ftracture; The Si element affects welding property.

Summary of the invention

The technical problem proposed in order to have solved prior art, the present invention proposes a kind of Pb-free copper-alloy material, and its environmental protection, healthy and safe coefficient are high; The tensile strength of material, anti dezincification character can be high; Welding property, cutting ability and thermoforming performance thereof obviously improve.

Technical scheme of the present invention is achieved in that a kind of Pb-free copper-alloy material, and its mass percent consists of: copper is 60%-68%, lead is 0.01%-0.5%, tin is 0.01%-0.5%, iron is 0.01%-0.3%, nickel is 0.01%-0.6%, aluminium is 0.01%-0.5%, arsenic is 0.01%-0.2%; Surplus is zinc and inevitable impurity, and impurity≤0.4%.

Further preferably, its mass percent consists of: copper is 61%-65%, lead is 0.1%-0.5%, tin is 0.1%-0.5%, iron is 0.1%-0.3%, nickel is 0.1%-0.6%, aluminium is 0.1%-0.5%, arsenic is 0.05%-0.2%; Surplus is zinc and inevitable impurity, and impurity≤0.4%.

Further preferably, its mass percent consists of: copper is 61%, lead is 0.1%, tin is 0.1%, iron is 0.1%, nickel is 0.1%, aluminium is 0.1%, arsenic is 0.05%; Surplus is zinc and inevitable impurity, and impurity≤0.4%.

Further preferably, its mass percent consists of: copper is 63%, lead is 0.2%, tin is 0.2%, iron is 0.2%, nickel is 0.3%, aluminium is 0.2%, arsenic is 0.08%; Surplus is zinc and inevitable impurity, and impurity≤0.4%.

Further preferably, its mass percent consists of: copper is 65%, lead is 0.5%, tin is 0.5%, iron is 0.3%, nickel is 0.6%, aluminium is 0.5%, arsenic is 0.1%; Surplus is zinc and inevitable impurity, and impurity≤0.4%.

Beneficial effect of the present invention: the Pb-free copper-alloy material that the present invention obtains, mechanical property: tensile strength 330-400MPa, hardness (HV30): 80-110, unit elongation: 35-45%; Processing performance: thermoforming performance 95%, cutting ability 85%; Chemical property: anti dezincification character energy: copper rod is vertically great<=200um laterally.

This Pb-free copper-alloy material environment friendly and healthy and safe coefficient are high, are particularly suitable for valve in potable water system, pipe fitting and various spare and accessory parts production thereof.

Embodiment

Below in conjunction with embodiment, the invention will be further described.

Embodiment 1

A kind of Pb-free copper-alloy material, its mass percent consists of: copper is 61%, lead is 0.1%, tin is 0.1%, iron is 0.1%, nickel is 0.1%, aluminium is 0.1%, arsenic is 0.05%; Surplus is zinc and inevitable impurity, and impurity≤0.4%.

The Pb-free copper-alloy of making according to above-mentioned mass percent, mechanical property: tensile strength 330-400MPa, hardness (HV30): 80-110, unit elongation: 35-45%; Processing performance: thermoforming performance 95%, cutting ability 85%; Chemical property: anti dezincification character energy: copper rod is vertically great<=200um laterally.

This Pb-free copper-alloy material does not affect the negative composition of material property containing Bi, Si, Sb, Ti etc., environmental protection and healthy and safe coefficient are high, are particularly suitable for valve in potable water system, pipe fitting and various spare and accessory parts production thereof.

Embodiment 2

A kind of Pb-free copper-alloy material, its mass percent consists of: copper is 63%, lead is 0.2%, tin is 0.2%, iron is 0.2%, nickel is 0.3%, aluminium is 0.2%, arsenic is 0.08%; Surplus is zinc and inevitable impurity, and impurity≤0.4%.

Embodiment 3

A kind of Pb-free copper-alloy material, its mass percent consists of: copper is 65%, lead is 0.5%, tin is 0.5%, iron is 0.3%, nickel is 0.6%, aluminium is 0.5%, arsenic is 0.1%; Surplus is zinc and inevitable impurity, and impurity≤0.4%.

Claims

1. a Pb-free copper-alloy material, it is characterized in that, its mass percent consists of: copper is 60%-68%, lead is 0.01%-0.5%, tin is 0.01%-0.5%, iron is 0.01%-0.3%, nickel is 0.01%-0.6%, aluminium is 0.01%-0.5%, arsenic is 0.01%-0.2%; Surplus is zinc and inevitable impurity, and impurity≤0.4%.

2. a kind of Pb-free copper-alloy material according to claim 1, it is characterized in that, its mass percent consists of: copper is 61%-65%, lead is 0.1%-0.5%, tin is 0.1%-0.5%, iron is 0.1%-0.3%, nickel is 0.1%-0.6%, aluminium is 0.1%-0.5%, arsenic is 0.05%-0.2%; Surplus is zinc and inevitable impurity, and impurity≤0.4%.

3. a kind of Pb-free copper-alloy material according to claim 1 and 2, is characterized in that, its mass percent consists of: copper is 61%, lead is 0.1%, tin is 0.1%, iron is 0.1%, nickel is 0.1%, aluminium is 0.1%, arsenic is 0.05%; Surplus is zinc and inevitable impurity, and impurity≤0.4%.

4. a kind of Pb-free copper-alloy material according to claim 1 and 2, is characterized in that, its mass percent consists of: copper is 63%, lead is 0.2%, tin is 0.2%, iron is 0.2%, nickel is 0.3%, aluminium is 0.2%, arsenic is 0.08%; Surplus is zinc and inevitable impurity, and impurity≤0.4%.

5. a kind of Pb-free copper-alloy material according to claim 1 and 2, is characterized in that, its mass percent consists of: copper is 65%, lead is 0.5%, tin is 0.5%, iron is 0.3%, nickel is 0.6%, aluminium is 0.5%, arsenic is 0.1%; Surplus is zinc and inevitable impurity, and impurity≤0.4%.