CN104032171A - High-manganese brass alloy material and preparation method thereof - Google Patents
High-manganese brass alloy material and preparation method thereof Download PDFInfo
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- CN104032171A CN104032171A CN201410197486.2A CN201410197486A CN104032171A CN 104032171 A CN104032171 A CN 104032171A CN 201410197486 A CN201410197486 A CN 201410197486A CN 104032171 A CN104032171 A CN 104032171A
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Abstract
A high-manganese brass alloy material comprises the chemical elements in percent by mass: 11.5-11.9% Mn, 2.1-2.3% of Al, 11.3-11.5% of Ni, 23.5-23.9% of Zn, 3.2-3.4 of Sn, and the balance Cu. The alloy possesses excellent cutting processing performance because of contained Mn, is capable of replacing lead brass, also is good in comprehensive mechanical properties, relatively high in strength, good in toughness, resistant to corrosion and capable of being subjected to hot/cold processing molding, and is applicable to manufacturing of precise parts. An employed refining agent is used for casting production, is capable of reducing the porosity degree of a casting by 1-2 degree and enabling the oxide inclusions to be around second grade, and helps to obviously improve the yield.
Description
Technical field
The manufacture field that the present invention relates to metal alloy compositions, relates in particular to a kind of high manganese brass 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 high manganese brass alloy material and preparation method thereof, this Cu alloy material has easy cutting, good mechanical property, corrosion resistant advantage.
Technical scheme of the present invention is as follows:
A kind of high manganese brass alloy material, is characterized in that: chemical element composition and mass percent thereof that it contains are: manganese 11.5-11.9, aluminium 2.1-2.3, nickel 11.3-11.5, zinc 23.5-23.9, Sn3.2-3.4, surplus are copper.
The production method of described high manganese brass alloy material, is characterized in that:
(1), preparing fine copper and copper scrap originates as copper matrix in 1:0.5-1 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, Sn; (3) other remaining components; The each batch of timed interval of dropping into element is 17-21 minute, after feeding intake, stirs.
Described casting postheat treatment is: be first warming up to 330-340 DEG C by room temperature with 240-250 DEG C/h of speed, and insulation 50-60 minute, then be warming up to 570-580 DEG C with 240-250 DEG C/h of speed, insulation 1-2 hour; Be cooled to 330-340 DEG C with 240-250 DEG C/h of speed again, then be cooled to 80-100 DEG C with 220-230 DEG C/h of speed, insulation 1-2 hour; Be warming up to 360-380 DEG C with 240-250 DEG C/h of speed again, insulation 1-2 hour; Be cooled to 100-120 DEG C with 250-260 DEG C/h of speed again, insulation 1-2 hour; Be warming up to 260-280 DEG C with 200-210 DEG C/h of speed again, insulation 2-3 hour, takes out air cooling and get final product.
Described refining agent is made up of 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 DEG C, 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
Alloy of the present invention contains manganese and has good machinability, alternative leaded brass, and comprehensive mechanical performance is good, and intensity is higher, and good toughness is corrosion-resistant, can cold and hot working moulding, can be used for precision component manufacture.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 high manganese brass alloy material: chemical element composition and mass percent thereof that it contains are: manganese 11.5-11.9, aluminium 2.1-2.3, nickel 11.3-11.5, zinc 23.5-23.9, Sn3.2-3.4, surplus are copper.
The production method of described high manganese brass alloy material is as follows:
(1), preparing fine copper and copper scrap originates as copper matrix in 1:0.7 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, Sn; (3) other remaining components; The each batch of timed interval of dropping into element is 19 minutes, after feeding intake, stirs.
Described casting postheat treatment is: be first warming up to 335 DEG C by room temperature with 245 DEG C/h of speed, be incubated 55 minutes, then be warming up to 575 DEG C with 245 DEG C/h of speed, be incubated 1.5 hours; Be cooled to 335 DEG C with 245 DEG C/h of speed again, then be cooled to 90 DEG C with 225 DEG C/h of speed, be incubated 1.6 hours; Be warming up to 370 DEG C with 245 DEG C/h of speed again, be incubated 1.5 hours; Be cooled to 110 DEG C with 255 DEG C/h of speed again, be incubated 1.5 hours; Be warming up to 270 DEG C with 205 DEG C/h of speed 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 DEG C, 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 high manganese brass alloy material of the present embodiment, tensile strength б b is 498Mpa, yield strength 480MPa, hardness value HB is 138, electric conductivity %IACS63,610 DEG C of softening temperatures, 20 DEG C of unit elongation 12.6%.
Claims (4)
1. a high manganese brass alloy material, is characterized in that: chemical element composition and mass percent thereof that it contains are: manganese 11.5-11.9, aluminium 2.1-2.3, nickel 11.3-11.5, zinc 23.5-23.9, Sn3.2-3.4, surplus are copper.
2. the production method of high manganese brass alloy material according to claim 1, is characterized in that:
(1), preparing fine copper and copper scrap originates as copper matrix in 1:0.5-1 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, Sn; (3) other remaining components; The each batch of timed interval of dropping into element is 17-21 minute, after feeding intake, stirs.
3. the production method of high manganese brass alloy material according to claim 2, it is characterized in that: described casting postheat treatment is: be first warming up to 330-340 DEG C by room temperature with 240-250 DEG C/h of speed, insulation 50-60 minute, be warming up to 570-580 DEG C with 240-250 DEG C/h of speed again, insulation 1-2 hour; Be cooled to 330-340 DEG C with 240-250 DEG C/h of speed again, then be cooled to 80-100 DEG C with 220-230 DEG C/h of speed, insulation 1-2 hour; Be warming up to 360-380 DEG C with 240-250 DEG C/h of speed again, insulation 1-2 hour; Be cooled to 100-120 DEG C with 250-260 DEG C/h of speed again, insulation 1-2 hour; Be warming up to 260-280 DEG C with 200-210 DEG C/h of speed again, insulation 2-3 hour, takes out air cooling and get final product.
4. the production method of high manganese brass alloy material according to claim 2, is characterized in that: described refining agent is made up of 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 DEG C, 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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Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003119527A (en) * | 2001-10-12 | 2003-04-23 | Chuetsu Metal Works Co Ltd | Lead-free copper alloy for sliding part |
CN1517446A (en) * | 2003-01-22 | 2004-08-04 | ͬ�Ϳ�ҵ��ʽ���� | Copper-based alloy and its manufacturing method |
CN103757475A (en) * | 2014-01-10 | 2014-04-30 | 滁州学院 | High-strength free-cutting tin brass alloy material and preparation method thereof |
-
2014
- 2014-05-12 CN CN201410197486.2A patent/CN104032171A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003119527A (en) * | 2001-10-12 | 2003-04-23 | Chuetsu Metal Works Co Ltd | Lead-free copper alloy for sliding part |
CN1517446A (en) * | 2003-01-22 | 2004-08-04 | ͬ�Ϳ�ҵ��ʽ���� | Copper-based alloy and its manufacturing method |
CN103757475A (en) * | 2014-01-10 | 2014-04-30 | 滁州学院 | High-strength free-cutting tin brass alloy material and preparation method thereof |
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Application publication date: 20140910 |
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