CN101748310A - Novel environment-friendly yellow brass alloy material and preparation process thereof - Google Patents
Novel environment-friendly yellow brass alloy material and preparation process thereof Download PDFInfo
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- CN101748310A CN101748310A CN200810162576A CN200810162576A CN101748310A CN 101748310 A CN101748310 A CN 101748310A CN 200810162576 A CN200810162576 A CN 200810162576A CN 200810162576 A CN200810162576 A CN 200810162576A CN 101748310 A CN101748310 A CN 101748310A
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Abstract
The invention discloses a novel environment-friendly yellow brass alloy material and a preparation process thereof. The formula of the yellow brass alloy material comprises the following components: 75% of copper, 3% of silicon, 0.1% of phosphorus and 21.9% of zinc. The main production process comprises the following steps of: using the formula of a novel environment-friendly copper alloy material, adopting a cored power-frequency vacuum induction furnace for smelting the alloy systems of the copper, the zinc, the silicon and the phosphorus by a fusion casting and processing technique of the environment-friendly type yellow brass alloy material, processing by a production and processing technique process, researching the product performance and a metallographic structure, measuring the electric conductivity and warehousing a finished product. In the smelting process, the addition of alloy elements is accurately controlled, the compensation dosage of the melting loss of the alloy elements is determined by using an intermediate alloy addition mode, and the chemical component of a fusant is ensured. The production and processing technique process comprises the following steps of: casting an ingot semicontinuously, extruding a bar type blank hotly by an oil press, drawing coldly for many times and aging under a protective atmosphere. The formation of a strengthening phase is controlled. Complicated brass which takes a beta phase as a main phase structure and prevents the occurrence of a gamma phase is formed. The invention is suitable for producing the yellow brass alloy material.
Description
Technical field
The present invention relates to a kind of novel environment-friendly yellow brass alloy material and manufacture craft thereof.
Background technology
The tradition brass alloys are to have added lead to be the low melting point element of representative in alloy, thereby make alloy have good free cutting property and higher intensity and plasticity.Machinability that it is generally acknowledged brass is along with the increase of lead improves, and is the most effective at the lead that approximately contains 3%.Because leaded brass has fabulous cutting ability, it is applied in the multiple manufacturing widely, as the miscellaneous small parts of pipe fitting, clock and watch, lockmaking, electrical equipment, communication, lighter, toy and traffic, relatively large machinery such as agricultural and precision cutting processing etc., but contain the heavy metal that human body is had very big harm---lead in the leaded brass, though its content is not high, but its discharging absolute magnitude non-decimal exists potential to threaten to people's health.
Environmental protection consciousness is constantly strengthened, and people are to all the more urgent and actual towards earnestly hoping of the green engineering material of new millennium, so the application of copper alloy containing lead is subjected to the restriction of domestic and international various countries environmental protection policy.Replacing lead with nontoxic or low harmful toxic matter, is the main path that reduces Lead contamination.To abandon pollution on the environment in order reducing after multiple production medium leaded brass is scrapped, must to adopt lead-free free-cutting brass.But lead-free general brass, its cutting ability extreme difference, discomfort satisfies precision machined requirement.Non-leaded easily-cutting brass is exactly to be grouped into by the one-tenth in the improvement brass, and the element that suitably adds other a small amount of toxicological harmless replaces plumbous function, makes it reach free machining purpose, promptly satisfies industrial needs and has protected ecotope again.The leadless environment-friendly brass alloys of research and development mainly are to add elements such as tellurium, bismuth, antimony in copper both at home and abroad at present, but have following point: elements such as tellurium, bismuth, antimony are rare your element, resource-constrained is difficult to form industrialization and produces in batches to substitute a large amount of leaded brasss that use; Add bismuth, merimee's yellow copper processing characteristics is bad, so lumber recovery is very low, has improved material cost.
Summary of the invention
The objective of the invention is to problem at the Lead contamination of above-mentioned leaded brass existence,, provide a kind of pollution-free, and brass alloy material and manufacture craft thereof that good copper, zinc, silicon, the phosphorus alloy of mechanical property and cutting ability is.
In order to achieve the above object, the present invention mainly finishes by the following technical solutions.
The brass alloys composition that the present invention adopts is: the Cu-Zn-Si-P alloy system.
The prescription of brass alloy material of the present invention is: copper: 75%, and silicon: 3%, phosphorus 0.1%, zinc 21.9%.
Main production of the present invention is: development of new environmental protection copper alloy material material formula---research and development have the environment-friendly type yellow Cu alloy material founding processing technology of core power frequency vacuum induction melting copper, zinc, silicon, phosphorus alloy system-→ the process for processing technical matters-→ product performance, metallographic structure research, electric conductivity measuring-→ the finished product warehouse-in.
1, employing has the brass alloy material of core power frequency vacuum induction melting copper, zinc, silicon, phosphorus alloy system.For guarantee melting solid chemical element composition evenly, stable, adopt that to have core power frequency vacuum induction furnace to have a melt agitating function strong, the characteristics that power factor is high help the homogeneity of Cu alloy material.Owing to fusing point difference in the alloy, therefore in fusion process, accurately control the adding of alloying element, the present invention adopts master alloy to add mode, determines the scaling loss compensation rate of alloying element simultaneously, guarantees the even, stable of melt Chemical Composition.
2, environment-friendly type process for processing technical matters.This technology comprises: semicontinuous ingot casting-→ oil press hot extrude pressure bar parison material-→ repeatedly cold stretching-→ protective atmosphere under timeliness.The alloying constituent proportioning of environmental protection Cu alloy material and the crux processing step of founding; adopt semicontinuous ingot casting; reduce heat treatment process; oil press hot extrude pressure bar parison material; adopt vacuum protection annealing, cancellation acid cleaning process, repeatedly cold stretching; timeliness under the protective atmosphere reaches the pollution-free of production technology.
3, the formation of control strengthening phase.Add silicon, phosphorus proportionally in copper alloy, make it to have strong chemosynthesis each other with matrix, forming with β is main phase structure mutually, prevents the complex brass that γ occurs mutually, make its have can be same with traditional leaded brass the high strength ability.The control alloy easily cuts the formation of phase.The present invention makes it to produce to have in crystalline structure to be similar to plumbous small dispersoid particle by changing the add-on of silicon, phosphorus, this particle can uniform distribution be play disconnectedly cut effect, thereby reach free machining performance.
The present invention compared with prior art has following tangible advantage and progress.(1) the present invention is by the brand-new design to alloy formula, utilize the excellent separately performance of silicon brass and phosphor-copper that the two is united two into one, add aboundresources, price to honest and clean silicon, phosphoric, obtain and add the alloy that non-ferrous metal performances such as bismuth, antimony are identical or be better than, alloy material reduces significantly, and economic feasibility is splendid.Alloy can not produce human body and the deleterious pollution of environment simultaneously.(2) to adopt P, Si be the easy cutting environment-friendly yellow brass alloy material of main additive in the present invention; have high-performance, environmental protection, free machining characteristic; thoroughly changed the existing cutting of China with leaded brass with the product situation of rare metals such as tellurium, bismuth, antimony as the free-cutting brass that adds element; not leaded in the product; and be main adding elements with resourceful P, Si, product has the due intensity of Cu alloy material, characteristic such as wear-resisting, anti-corrosion.The more important thing is.Novel environment-friendly yellow brass alloy material and goods life-time service thereof can polluted waters and are detrimental to health.
The present invention is applicable to the production novel environment-friendly yellow brass alloy material.
Claims (5)
1. novel environment-friendly yellow brass alloy material and manufacture craft thereof is characterized in that the prescription of brass alloy material is: copper: 75%, and silicon: 3%, phosphorus 0.1%, zinc 21.9%.
2. novel environment-friendly yellow brass alloy material according to claim 1 and manufacture craft thereof is characterized in that main production is: with novel environment friendly copper alloy material material formula---adopt core power frequency vacuum induction melting copper is arranged, the environment-friendly type yellow Cu alloy material founding processing technology of zinc, silicon, phosphorus alloy system-→ the process for processing technical matters-→ product performance, metallographic structure research, electric conductivity measuring-→ the finished product warehouse-in.
3. novel environment-friendly yellow brass alloy material according to claim 2 and manufacture craft thereof; it is characterized in that described founding processing technology is to adopt core power frequency vacuum induction stove and accessory is arranged; in fusion process; the accurately adding of control alloying element; adopt master alloy to add mode; determine the scaling loss compensation rate of alloying element simultaneously, guarantee the even, stable of melt Chemical Composition.
4. novel environment-friendly yellow brass alloy material according to claim 2 and manufacture craft thereof; it is characterized in that its process for processing technical matters comprises: semicontinuous ingot casting-→ the minimizing heat treatment process; oil press hot extrude pressure bar parison material-→ annealing of employing vacuum protection; the cancellation acid cleaning process, repeatedly cold stretching-→ protective atmosphere under timeliness.
5. novel environment-friendly yellow brass alloy material according to claim 2 and manufacture craft thereof; it is characterized in that controlling the formation of strengthening phase; in copper alloy, add silicon, phosphorus proportionally; make it to have strong chemosynthesis each other with matrix; formation is main phase structure with β mutually, prevents the complex brass that γ occurs mutually, by changing the add-on of silicon, phosphorus; make it in crystalline structure to produce to have and be similar to plumbous small dispersoid particle, make this particle can uniform distribution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810162576A CN101748310A (en) | 2008-12-04 | 2008-12-04 | Novel environment-friendly yellow brass alloy material and preparation process thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200810162576A CN101748310A (en) | 2008-12-04 | 2008-12-04 | Novel environment-friendly yellow brass alloy material and preparation process thereof |
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| CN101748310A true CN101748310A (en) | 2010-06-23 |
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| CN200810162576A Pending CN101748310A (en) | 2008-12-04 | 2008-12-04 | Novel environment-friendly yellow brass alloy material and preparation process thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102864329A (en) * | 2012-09-14 | 2013-01-09 | 浙江天河铜业股份有限公司 | Easily cut and easily hot-forged brass alloy suitable for horizontal continuous casting |
| CN103540957A (en) * | 2013-09-26 | 2014-01-29 | 界首市飞航铜业有限公司 | Energy-saving preparation process for smelting recycled copper rod by copper-zinc alloy wastes |
-
2008
- 2008-12-04 CN CN200810162576A patent/CN101748310A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102864329A (en) * | 2012-09-14 | 2013-01-09 | 浙江天河铜业股份有限公司 | Easily cut and easily hot-forged brass alloy suitable for horizontal continuous casting |
| CN103540957A (en) * | 2013-09-26 | 2014-01-29 | 界首市飞航铜业有限公司 | Energy-saving preparation process for smelting recycled copper rod by copper-zinc alloy wastes |
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Application publication date: 20100623 |