Leadless and free-cutting phosphorus-brass alloy and manufacturing method thereof
A brass alloy, free-cutting technology, applied in the field of phosphor-brass alloys, can solve problems such as lead pollution to the environment, and achieve the effects of reducing production costs, excellent cutting performance, excellent casting performance and thermoforming performance
A brass alloy, free-cutting technology, applied in the field of phosphor-brass alloys, can solve problems such as lead pollution to the environment, and achieve the effects of reducing production costs, excellent cutting performance, excellent casting performance and thermoforming performance
CN101285138AActive Publication Date: 2008-10-15XIAMEN LAVIDA HI TECH MATERIAL CO LTD
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[0024] Alloys were prepared according to the alloy compositions of Examples 1-10 in Table 1. Some alloy ingots are used for forging, some are used for remelting and low-pressure casting, and some are used for extruding rods. The cutting performance, casting performance, dezincification corrosion and mechanical performance testing were carried out. The ingot forging temperature is 570-700°C, the extrusion temperature is 560-680°C, the low-pressure casting temperature is 980-1000°C, and the stress relief annealing temperature is 350-450°C.
[0025] Table 1 Lead-free free-cutting phosphorus brass alloy composition (weight %)
[0026]
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Abstract
The invention provides a lead-free cutting-free alloy and a preparation method thereof. The components (weight percentage) of the alloy are: more than 97.0 but not equal to 99.5 of (copper + zinc), more than 35.0 of zinc, 0.4-1.6 of phosphor and 0.005-0.6 of at least two other elements selected from aluminum, silicon, antimony, stannum, lanthanon, titanium and boron, the balance being zinc and impurities, wherein, the zinc content is more than 35.0 (weight percentage). The invention also provides a preparation method for the lead-free cutting-free high phosphor brass alloy. The alloy of the invention has excellent machinability, castibility, welding property, dezincification corrosion resisting property, formability and mechanical property, and is particularly suitable for forged pieces and low-pressure cast castings needing cutting processing, grinding processing (polish), welding and plating, such as hydrants, valve bodies and bushings in a water supply system.
Description
technical field [0001] The invention relates to a phosphor brass alloy, in particular to a lead-free free-cutting phosphor brass alloy suitable for water supply system forgings or castings and a manufacturing method thereof. Background technique [0002] Lead-containing brass alloy materials are still widely used as structural materials for many products because of their excellent cutting properties, hot and cold forming properties, and low production costs. However, during the production and use of lead brass, lead will pollute the environment and cause harm to the human body, which has attracted people's attention. Therefore, the application of lead-containing materials, including lead brass, is increasingly restricted. . In order to meet this challenge, in recent years, domestic and foreign countries have actively researched and developed lead-free free-cutting brass alloys. The bismuth brass and tellurium brass that have been researched and developed are the two lead-f...
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Patent Timeline
15 Oct 2008
Publication
CN101285138A
- IPC
- C22C9/04; C22C1/02
- CPC
- C22C9/04
- Inventors
- 许传凯; 胡振青