Copper alloy material for lead-free brass ball valve assembly and manufacturing method thereof

A technology of lead-free brass and a manufacturing method, applied in the field of alloy materials, can solve problems such as poor dezincification resistance, poor corrosion resistance and other properties, and achieve strong corrosion resistance and improve dezincification resistance. , the effect of high wear resistance and strength properties

Active Publication Date: 2017-10-24
TAIZHOU BADA VALVE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The brass alloy has environmental protection, high health and safety factor, and the tensile strength, welding performance, cutting performance and thermoforming performance of the material are obviously improved, but it is only a qualitative description, and its dezincification resistance is poor and Relatively speaking, the performance such as corrosion resistance is not well reflected, and there are still certain defects.

Method used

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  • Copper alloy material for lead-free brass ball valve assembly and manufacturing method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The copper alloy material used for lead-free brass ball valve components mainly includes the following percentages:

[0023] Copper: 58wt%; tin: 0.5wt%; arsenic: 0.06wt%; The content of iron among the avoided impurities is ≤0.1wt%.

[0024] Among them, the lead-free brass ball valve components can be valve body, valve cover, valve stem, sealing ball (spool) or pressure cap and other related components in the valve can be processed with the above copper alloy materials, more specifically , the corresponding lead-free brass ball valve assembly above is manufactured using the following method:

[0025] According to the shape and size of the lead-free brass ball valve assembly, a copper rod made of copper alloy material is selected for cutting and segmentation, and then heated to 700°C to 750°C for hot forging to obtain the corresponding lead-free brass ball valve The component blank, then, control the temperature at 550°C for the first isothermal annealing treatment for ...

Embodiment 2

[0027] The copper alloy material used for lead-free brass ball valve components mainly includes the following percentages:

[0028] Copper: 63wt%; Tin: 1.0wt%; Arsenic: 0.02wt%; The content of iron in the iron is less than or equal to 0.1wt%.

[0029] Among them, the lead-free brass ball valve components can be the relevant components in the valve such as the valve body, valve cover, valve stem, sealing ball or pressure cap, which can be processed with the above copper alloy materials. More specifically, the above corresponding Lead-free brass ball valve assemblies are manufactured using the following methods:

[0030] According to the shape and size of the lead-free brass ball valve assembly, a copper rod made of copper alloy material is selected for cutting and segmentation, and then heated to 750°C for hot forging to obtain the corresponding lead-free brass ball valve assembly blank, and then , then control the temperature at 580°C for the first isothermal annealing treat...

Embodiment 3

[0032] The copper alloy material used for lead-free brass ball valve components mainly includes the following percentages:

[0033] Copper: 60wt%; tin: 0.8wt%; arsenic: 0.04wt%; The content of iron in the iron is less than or equal to 0.1wt%.

[0034]Among them, the lead-free brass ball valve components can be the relevant components in the valve such as the valve body, valve cover, valve stem, sealing ball or pressure cap, which can be processed with the above copper alloy materials. More specifically, the above corresponding Lead-free brass ball valve assemblies are manufactured using the following methods:

[0035] According to the shape and size of the lead-free brass ball valve assembly, a copper rod made of copper alloy material is selected for cutting and segmentation, and then heated to 800°C for hot forging to obtain the corresponding lead-free brass ball valve assembly blank. Then, control the temperature at 600°C for the first isothermal annealing treatment for 2....

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Abstract

The invention relates to a copper alloy material and a manufacturing method for a lead-free brass ball valve component, belongs to the technical field of alloy materials and aims to solve the problem that existing dezincification resistance and corrosion resistance are poor. The copper alloy material mainly includes, by weight percentage, 58-63% of copper, 0.6-1.0% of tin, 0.02-0.06% of arsenic, less than or equal to 0.1% of lead and the balance zinc and inevitable impurities. The method includes the steps that a corresponding copper rod is selected to be cut and segmented, the temperature is raised to 700-800 DEG C for hot forging forming, and the lead-free brass ball valve component is obtained; then isothermal annealing treatment is conducted at the temperature of 550-600 DEG C, cooling is conducted, and the corresponding lead-free brass ball valve component is obtained. Zinc and tin are added, and the copper alloy material can have the advantages of being high in dezincification resistance, corrosion resistance, wear resistance and strength.

Description

technical field [0001] The invention relates to a copper alloy material used for a lead-free brass ball valve assembly and a manufacturing method thereof, belonging to the technical field of alloy materials. Background technique [0002] Due to its excellent properties such as forging, cutting, stretching, electroplating, and welding, copper is widely used in various industries and is especially suitable for the manufacture of valves, pipe fittings and various spare parts in drinking water systems. But at present, the main material of the main body, bonnet, valve stem, sealing ball and pressure cap of the copper valve in contact with the medium is mainly processed from lead brass. However, with the improvement of people's living standards, the requirements for water quality are also increasing. However, the heavy metal lead in the lead brass material used in the valve assembly has a great pollution to the water quality and seriously affects people's health. For the sake of s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C9/04C22F1/08B23P15/00
CPCB23P15/001C22C9/04C22F1/08
Inventor 戴凡钧卓瑞君
Owner TAIZHOU BADA VALVE
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