CN103757473A - Environment-friendly free-cutting zinc white copper alloy material and preparation method thereof - Google Patents
Environment-friendly free-cutting zinc white copper alloy material and preparation method thereof Download PDFInfo
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- CN103757473A CN103757473A CN201410011356.5A CN201410011356A CN103757473A CN 103757473 A CN103757473 A CN 103757473A CN 201410011356 A CN201410011356 A CN 201410011356A CN 103757473 A CN103757473 A CN 103757473A
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Abstract
The invention relates to an environment-friendly free-cutting zinc white copper alloy material which contains the following chemical components in percentage by mass: 5.8-6.2% of nickel, 13.5-13.9% of zinc, 0.35-0.38% of stibium, 0.05-0.09% of cerium, 1.2-1.4% of Li, 0.06-0.08% of Ba and the balance of copper. The zinc white copper alloy has the beautiful color of white copper and the excellent working properties of zinc brass; and by adding the stibium, cerium, Li and Ba, the zinc white copper alloy has the advantages of favorable cutting characteristic and favorable electric conductivity. The copper alloy is suitable for manufacturing precision parts in the fields of instruments and meters, medical appliances, daily necessities, communications and the like. When the refining agent is used for casting production, the porosity in the casting is lowered by 1-2 degrees, the oxide inclusion content is lowered by 2 levels or so, and the yield is obviously enhanced.
Description
Technical field
The present invention relates to the manufacture field of metal alloy compositions, relate in particular to a kind of environment-protective free-cutting nickel silver alloy material and preparation method thereof.
Background technology
Copper is because of its good electroconductibility, plasticity-, and erosion resistance, applies very extensive.In copper alloy, add Lv ﹑ Nie ﹑ Meng ﹑ Xi ﹑ Gui ﹑ lead and other elements, can improve the performance of copper, for different places.Still there are some problems in the existing copper alloy of China at present, and as alloy contains a large amount of impurity elements, high temperature fatigue is poor, hot strength is low; Hardness is low, wears no resistance, frictional coefficient is large, and work-ing life is short; Poorly conductive, waste electric energy; Bending machining performance is poor, easily fractures; Quality weight, constructional difficulties; Can't meet market demands.
Summary of the invention
The object of the present invention is to provide a kind of environment-protective free-cutting nickel silver alloy material and preparation method thereof, this Cu alloy material has that intensity is high, good processability, free machining advantage.
Technical scheme of the present invention is as follows:
A kind of environment-protective free-cutting nickel silver alloy material, is characterized in that: chemical element composition and mass percent thereof that it contains are: nickel 5.8-6.2, zinc 13.5-13.9, antimony 0.35-0.38, cerium 0.05-0.09, Li1.2-1.4, Ba0.06-0.08, surplus are copper.
The production method of described environment-protective free-cutting nickel silver alloy material, is characterized in that:
(1), preparing fine copper and copper scrap originates as copper matrix in 1:0.3-0.7 ratio, fine copper is added to drop in stove and melt, carry out removing impurities matter, deoxidation, employing refining agent initial refining, add alloying constituent and carry out alloying, then add copper scrap fusing, add refining agent secondary refining, detection and adjust chemical element component content to qualified, casting, casting postheat treatment etc.;
(2) in alloying process, to the lot sequence that drops into alloying element in stove, be: (1) zinc; (2) nickel, antimony; (3) other remaining components; The each batch of timed interval of dropping into element is 18-22 minute, after feeding intake, stirs.
Described casting postheat treatment is: first by room temperature, with 240-250 ℃/h of speed, be warming up to 330-350 ℃, and insulation 50-60 minute, then with 240-250 ℃/h of speed, be warming up to 560-570 ℃, insulation 1-2 hour; With 270-280 ℃/h of speed, be cooled to 300-320 ℃ again, insulation 40-50 minute, then with 270-280 ℃/h of speed, be cooled to 80-90 ℃, insulation 1-2 hour; With 240-250 ℃/h of speed, be warming up to 350-370 ℃ again, insulation 1-2 hour; With 250-260 ℃/h of speed, be cooled to 100-120 ℃ again, insulation 1-2 hour; With 200-210 ℃/h of speed, be warming up to 310-330 ℃ again, insulation 2-3 hour, takes out air cooling and get final product.
Described refining agent is made by the raw material of following weight part: Paris white 4-5, bauxitic clay 2.1-2.5, trees ashes 1-2, nano silicon 1-2, alum 2-3, jade powder 3-4, calcium carbide powder 4-5, potassium fluotitanate 2-3, sodium tetraborate 1-2, Bi
2o
32-3; Its preparation method is that Paris white, bauxitic clay, trees ashes, nano silicon, alum, jade powder, calcium carbide powder are mixed, be heated to 2600-3000 ℃, stir 1-2 hour, after cooling, be added in the hydrochloric acid soln of 10-15%, soak 1-2 hour, filter, filter residue is cleaned with clear water repeatedly, dries, and merges and mixes and get final product with other composition.
Beneficial effect of the present invention
Nickel silver alloy of the present invention has retained the color and luster of copper-nickel alloy beauty, also has the processing characteristics of zinc yellow copper excellence, by adding antimony, cerium, Li, Ba element, and excellent cutting performance, and also conductivity is good.Copper alloy of the present invention is applicable to make the precision component in the fields such as instrument, medicine equipment, daily necessities and communication.Refining agent of the present invention, for Foundry Production, can make the degree of porosity in foundry goods reduce 1-2 degree, and oxide inclusion, 2 grades of left and right, obviously improves yield rate.
Embodiment
A kind of environment-protective free-cutting nickel silver alloy material, chemical element composition and mass percent thereof that it contains are: nickel 5.8-6.2, zinc 13.5-13.9, antimony 0.35-0.38, cerium 0.05-0.09, Li1.2-1.4, Ba0.06-0.08, surplus are copper.
The production method of described environment-protective free-cutting nickel silver alloy material is as follows:
(1), preparing fine copper and copper scrap originates as copper matrix in 1:0.5 ratio, fine copper is added to drop in stove and melt, carry out removing impurities matter, deoxidation, employing refining agent initial refining, add alloying constituent and carry out alloying, then add copper scrap fusing, add refining agent secondary refining, detection and adjust chemical element component content to qualified, casting, casting postheat treatment etc.;
(2) in alloying process, to the lot sequence that drops into alloying element in stove, be: (1) zinc; (2) nickel, antimony; (3) other remaining components; The each batch of timed interval of dropping into element is 20 minutes, after feeding intake, stirs.
Described casting postheat treatment is: first by room temperature, with 245 ℃/h of speed, be warming up to 340 ℃, be incubated 55 minutes, then be warming up to 565 ℃ with 245 ℃/h of speed, be incubated 1.5 hours; With 275 ℃/h of speed, be cooled to 310 ℃ again, be incubated 45 minutes, then be cooled to 85 ℃ with 275 ℃/h of speed, be incubated 1.5 hours; With 245 ℃/h of speed, be warming up to 360 ℃ again, be incubated 1.5 hours; With 255 ℃/h of speed, be cooled to 110 ℃ again, be incubated 1.5 hours; With 205 ℃/h of speed, be warming up to 320 ℃ again, be incubated 2.5 hours, take out air cooling and get final product.
Described refining agent by following weight part (kilogram) raw material make: Paris white 5, bauxitic clay 2.1, trees ashes 1, nano silicon 2, alum 2, jade powder 4, calcium carbide powder 4, potassium fluotitanate 3, sodium tetraborate 2, Bi
2o
32; Its preparation method is that Paris white, bauxitic clay, trees ashes, nano silicon, alum, jade powder, calcium carbide powder are mixed, be heated to 2600-3000 ℃, stir 1-2 hour, after cooling, be added in the hydrochloric acid soln of 10-15%, soak 1-2 hour, filter, filter residue is cleaned with clear water repeatedly, dries, and merges and mixes and get final product with other composition.
The present embodiment environment-protective free-cutting nickel silver alloy material, tensile strength б b is 5340Mpa, yield strength 507MPa, hardness value HB is 144, electric conductivity %IACS63,607 ℃ of softening temperatures, 20 ℃ of unit elongation 16.6%.
Claims (4)
1. an environment-protective free-cutting nickel silver alloy material, is characterized in that: chemical element composition and mass percent thereof that it contains are: nickel 5.8-6.2, zinc 13.5-13.9, antimony 0.35-0.38, cerium 0.05-0.09, Li1.2-1.4, Ba0.06-0.08, surplus are copper.
2. the production method of environment-protective free-cutting nickel silver alloy material according to claim 1, is characterized in that:
(1), preparing fine copper and copper scrap originates as copper matrix in 1:0.3-0.7 ratio, fine copper is added to drop in stove and melt, carry out removing impurities matter, deoxidation, employing refining agent initial refining, add alloying constituent and carry out alloying, then add copper scrap fusing, add refining agent secondary refining, detection and adjust chemical element component content to qualified, casting, casting postheat treatment etc.;
(2) in alloying process, to the lot sequence that drops into alloying element in stove, be: (1) zinc; (2) nickel, antimony; (3) other remaining components; The each batch of timed interval of dropping into element is 18-22 minute, after feeding intake, stirs.
3. the production method of environment-protective free-cutting nickel silver alloy material according to claim 2, it is characterized in that: described casting postheat treatment is: first by room temperature, with 240-250 ℃/h of speed, be warming up to 330-350 ℃, insulation 50-60 minute, with 240-250 ℃/h of speed, be warming up to 560-570 ℃ again, insulation 1-2 hour; With 270-280 ℃/h of speed, be cooled to 300-320 ℃ again, insulation 40-50 minute, then with 270-280 ℃/h of speed, be cooled to 80-90 ℃, insulation 1-2 hour; With 240-250 ℃/h of speed, be warming up to 350-370 ℃ again, insulation 1-2 hour; With 250-260 ℃/h of speed, be cooled to 100-120 ℃ again, insulation 1-2 hour; With 200-210 ℃/h of speed, be warming up to 310-330 ℃ again, insulation 2-3 hour, takes out air cooling and get final product.
4. the production method of environment-protective free-cutting nickel silver alloy material according to claim 2, is characterized in that: described refining agent is made by the raw material of following weight part: Paris white 4-5, bauxitic clay 2.1-2.5, trees ashes 1-2, nano silicon 1-2, alum 2-3, jade powder 3-4, calcium carbide powder 4-5, potassium fluotitanate 2-3, sodium tetraborate 1-2, Bi
2o
32-3; Its preparation method is that Paris white, bauxitic clay, trees ashes, nano silicon, alum, jade powder, calcium carbide powder are mixed, be heated to 2600-3000 ℃, stir 1-2 hour, after cooling, be added in the hydrochloric acid soln of 10-15%, soak 1-2 hour, filter, filter residue is cleaned with clear water repeatedly, dries, and merges and mixes and get final product with other composition.
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| CN201410011356.5A CN103757473B (en) | 2014-01-10 | 2014-01-10 | A kind of environment-protective free-cutting nickel silver alloy material and preparation method thereof |
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| CN201410011356.5A CN103757473B (en) | 2014-01-10 | 2014-01-10 | A kind of environment-protective free-cutting nickel silver alloy material and preparation method thereof |
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| CN103757473B CN103757473B (en) | 2016-01-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104032183A (en) * | 2014-05-12 | 2014-09-10 | 蚌埠市宏威滤清器有限公司 | Free-cutting environment-friendly cupronickel alloy material and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004149874A (en) * | 2002-10-31 | 2004-05-27 | Nikko Metal Manufacturing Co Ltd | Easily-workable high-strength high-electric conductive copper alloy |
| CN1930314A (en) * | 2004-03-12 | 2007-03-14 | 住友金属工业株式会社 | Copper alloy and process for producing the same |
| US20070062619A1 (en) * | 2004-03-12 | 2007-03-22 | Yasuhiro Maehara | Copper alloy and process for producing the same |
| CN103397222A (en) * | 2013-07-01 | 2013-11-20 | 安徽三联泵业股份有限公司 | Stainless steel drawing mould copper alloy and preparation method thereof |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004149874A (en) * | 2002-10-31 | 2004-05-27 | Nikko Metal Manufacturing Co Ltd | Easily-workable high-strength high-electric conductive copper alloy |
| CN1930314A (en) * | 2004-03-12 | 2007-03-14 | 住友金属工业株式会社 | Copper alloy and process for producing the same |
| US20070062619A1 (en) * | 2004-03-12 | 2007-03-22 | Yasuhiro Maehara | Copper alloy and process for producing the same |
| CN103397222A (en) * | 2013-07-01 | 2013-11-20 | 安徽三联泵业股份有限公司 | Stainless steel drawing mould copper alloy and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104032183A (en) * | 2014-05-12 | 2014-09-10 | 蚌埠市宏威滤清器有限公司 | Free-cutting environment-friendly cupronickel alloy material and preparation method thereof |
| CN104032183B (en) * | 2014-05-12 | 2016-04-13 | 蚌埠市宏威滤清器有限公司 | A kind of free machining environmental protection cupronickel alloy material and preparation method thereof |
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