Anti-dezincification free-cutting brass rod and production method thereof

A production method and an easy-cutting technology, which are applied in the field of dezincification-resistant and easy-cutting brass rods and their production, can solve the problems of poor anti-dezincification and corrosion resistance of brass rods, affecting the performance of materials, and affecting the overall performance of materials, etc. , to achieve the effects of reducing the harm of lead to the human body, excellent cutting performance, and improving easy cutting performance

Inactive Publication Date: 2016-09-07
龙岩市鸿航金属科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in order to significantly improve the machinability of the substrate, the silicon content in the above patents is above 0.4%, which leads to a significant increase in the hardness of the material, seriously reduces the machinability of the substrate, and affects the usability of the material. In addition, the above patents add content> 0.6% Bi not only wastes material cost, but also easily forms discontinuous dots distributed in the matrix, which can easily cause thermal embrittlement and affect the overall performance of the material
In addition, the brass rod casted by the silicon-bismuth brass alloy of the above-mentioned patent has poor dezincification and corrosion resistance, and cannot meet the requirements of sanitary copper products. Copper Rod Study

Method used

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  • Anti-dezincification free-cutting brass rod and production method thereof
  • Anti-dezincification free-cutting brass rod and production method thereof
  • Anti-dezincification free-cutting brass rod and production method thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0039] Embodiment 1 of the present invention discloses a dezincification-resistant free-cutting brass rod, which is composed of the following raw materials in mass percentage: Cu61.215%, Bi0.321%, Sn0.157%, Fe0.02%, Al0.568% , boron element 0.0036%, Si0.27%, Ni0.12%, Pb0.061%, arsenic-copper alloy 0.095%, Zn37.13% and total 0.0394% impurities.

[0040] The production method for producing dezincification-resistant free-cutting brass rods with the ratio of the above raw materials includes the steps of casting and extruding solid casting rods and the steps of extruding the casting rods into copper rods:

[0041] The step of casting and extruding a solid casting rod includes:

[0042] 1) First add 100Kg of lead-free silicon brass scraps into the power frequency furnace. The total amount of the lead-free silicon brass scraps added is 20% of the total raw materials. The lead-free silicon brass scraps contain Ni, Pb and Fe, so there is no need to add it in the follow-up preparation ...

Embodiment 2

[0061] The invention discloses a dezincification-resistant free-cutting brass rod, which is composed of the following raw materials in mass percentage: Cu60.12%, Bi0.365%, Sn0.138%, Fe0.031%, Al0.562%, boron 0.0025%, Si0.21%, Ni0.012%, Pb0.125%, arsenic copper alloy 0.15%, Zn38.28% and 0.0045% impurities.

[0062] The production method for producing dezincification-resistant free-cutting brass rods with the ratio of the above raw materials includes the steps of casting and extruding solid casting rods and the steps of extruding the casting rods into copper rods:

[0063] The step of casting and extruding a solid casting rod includes:

[0064] 1) First add 125Kg of lead-free silicon brass scraps into the power frequency furnace. The total amount of the lead-free silicon brass scraps added is 20% of the total raw materials. The lead-free silicon brass scraps contain Ni, Pb and Fe, so there is no need to add it in the subsequent preparation process. If the composition of the sub...

Embodiment 3

[0076] The invention discloses a dezincification-resistant free-cutting brass rod, which is composed of the following raw materials in mass percentage: Cu60.04%, Bi0.348%, Sn0.137%, Fe0.032%, Al0.560%, B0. 0034%, Si0.23%, Ni0.007%, Pb0.122%, arsenic-copper alloy 0.17%, Zn38.28% and the total amount of impurities not greater than 0.0006%.

[0077] The production method for producing dezincification-resistant free-cutting brass rods with the ratio of the above raw materials includes the steps of casting and extruding solid casting rods and the steps of extruding the casting rods into copper rods:

[0078] The step of casting and extruding a solid casting rod includes:

[0079] 1) First add 150Kg of lead-free silicon brass shavings into the power frequency furnace. The total amount of the lead-free silicon brass shavings is 20% of the total raw materials. The lead-free silicon brass shavings contain Ni, Pb and Fe, so there is no need to add it in the subsequent preparation proce...

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Abstract

The invention provides an anti-dezincification free-cutting brass rod being excellent in mechanical property, high in density and good in cutting property and a production method thereof. The brass rod comprises the following raw materials in percentage by mass: 60-66 of Cu, 0.1-06% of Bi, 0.1-0.5% of Sn, 0.02-0.07% of Fe, 0.2-0.8% of Al, less than 0.0038% of a modificator, 0.2-0.3% of Si, less than 0.15% of Ni, less than 0.15% of Pb, 0.08-0.18% of an As-Cu alloy, and the balance of Zn as well as impurities of which the total mass is less than 0.5%. The production method comprises the following steps: carrying out casting and extruding on a solid brass ingot; and extruding the treated brass ingot into the brass rod.

Description

technical field [0001] The invention relates to a plumbing and bathroom component and a production method, in particular to a dezincification-resistant free-cutting brass rod and a production method thereof. Background technique [0002] Lead brass has excellent cold and hot processing performance, excellent cutting performance and self-lubricating characteristics, and can meet the casting, forging, machining, polishing and other processes of parts of various shapes, so lead brass is widely used in electronic Telecommunications, home appliances, aerospace, automobiles, hardware decoration, shipbuilding and bathroom plumbing and other industries. The existing low-lead environmental protection casting brass rods have poor surface quality, are not easy to be polished and electroplated, and are difficult to process. Manufacturers have to continue to use leaded brass rods to produce complex parts. This leaded brass rod has good cutting performance and is used in hardware product...

Claims

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Application Information

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IPC IPC(8): C22C9/04C22C1/03
CPCC22C9/04B22D11/004C22C1/03
Inventor 彭秀华陈永禄张海高王秋燕王文华卢清锋
Owner 龙岩市鸿航金属科技有限公司
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