CN103757474A - High-manganese free-cutting brass alloy material and preparation method thereof - Google Patents
High-manganese free-cutting brass alloy material and preparation method thereof Download PDFInfo
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- CN103757474A CN103757474A CN201410011513.2A CN201410011513A CN103757474A CN 103757474 A CN103757474 A CN 103757474A CN 201410011513 A CN201410011513 A CN 201410011513A CN 103757474 A CN103757474 A CN 103757474A
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Abstract
The invention relates to a high-manganese free-cutting brass alloy material which contains the following chemical components in percentage by mass: 1.5-1.9% of manganese, 32.5-33.9% of zinc, 0.25-0.29% of As, 0.08-0.12% of Sb and the balance of copper. The alloy has the advantages of high toughness, high wear resistance, favorable corrosion resistance, favorable cutting property due to Sb, no toxicity, no pollution, favorable mechanical properties, favorable brazability, low electric conductivity and low thermal conductivity, and is suitable for electromagnetic four-way reversing valves for refrigeration. 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 at level 2 or so, and the yield is obviously enhanced.
Description
Technical field
The manufacture field that the present invention relates to metal alloy compositions, relates in particular to a kind of high manganese easy cutting 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 easy cutting brass alloy material and preparation method thereof, this Cu alloy material has advantages of good toughness, wear-resisting, low heat-conductivity conducting.
Technical scheme of the present invention is as follows:
A kind of high manganese easy cutting brass alloy material, is characterized in that: chemical element composition and mass percent thereof that it contains are: manganese 1.5-1.9, zinc 32.5-33.9, As0.25-0.29, Sb0.08-0.12, surplus are copper.
The production method of described high manganese easy cutting brass 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) manganese; (3) other remaining components; The each batch of timed interval of dropping into element is 18-20 minute, after feeding intake, stirs.
Described casting postheat treatment is: first by room temperature, with 220-230 ℃/h of speed, be warming up to 280-290 ℃, and insulation 50-60 minute, then with 240-250 ℃/h of speed, be warming up to 550-570 ℃, insulation 1-2 hour; With 250-260 ℃/h of speed, be cooled to 350-360 ℃ again, insulation 30-50 minute, then with 220-230 ℃/h of speed, be cooled to 100-120 ℃, insulation 1-2 hour; With 240-250 ℃/h of speed, be warming up to 360-380 ℃ again, insulation 1-2 hour; With 220-230 ℃/h of speed, be cooled to 100-120 ℃ again, insulation 1-2 hour; With 200-210 ℃/h of speed, be warming up to 270-290 ℃ 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
Alloy of the present invention has high toughness and wear resistance, good corrosion resistance, and simultaneously because containing Sb, machinability is good, nontoxic pollution-free; Also there is good mechanical property and brazing performance, have low electroconductibility and low thermal conductivity, be applicable to cooling electromagnetism four-way change-over valve.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 easy cutting brass alloy material, chemical element composition and mass percent thereof that it contains are: manganese 1.5-1.9, zinc 32.5-33.9, As0.25-0.29, Sb0.08-0.12, surplus are copper.
The production method of described high manganese easy cutting brass 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) manganese; (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: first by room temperature, with 225 ℃/h of speed, be warming up to 285 ℃, be incubated 55 minutes, then be warming up to 560 ℃ with 245 ℃/h of speed, be incubated 1.5 hours; With 255 ℃/h of speed, be cooled to 355 ℃ again, be incubated 40 minutes, then be cooled to 110 ℃ with 225 ℃/h of speed, be incubated 1.5 hours; With 245 ℃/h of speed, be warming up to 370 ℃ again, be incubated 1.5 hours; With 225 ℃/h of speed, be cooled to 110 ℃ again, be incubated 1.5 hours; With 205 ℃/h of speed, be warming up to 280 ℃ 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 high manganese easy cutting brass alloy material, tensile strength б b is 557Mpa, yield strength 513MPa, hardness value HB is 147, electric conductivity %IACS50,597 ℃ of softening temperatures, 20 ℃ of unit elongation 15.8%.
Claims (4)
1. a high manganese easy cutting brass alloy material, is characterized in that: chemical element composition and mass percent thereof that it contains are: manganese 1.5-1.9, zinc 32.5-33.9, As0.25-0.29, Sb0.08-0.12, surplus are copper.
2. the production method of high manganese easy cutting brass alloy material according to claim 1, is characterized in that:
(1), preparing fine copper and copper scrap originates as copper matrix in 1:0.3-0.7 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) manganese; (3) other remaining components; The each batch of timed interval of dropping into element is 18-20 minute, after feeding intake, stirs.
3. the production method of high manganese easy cutting brass alloy material according to claim 2, it is characterized in that: described casting postheat treatment is: first by room temperature, with 220-230 ℃/h of speed, be warming up to 280-290 ℃, insulation 50-60 minute, with 240-250 ℃/h of speed, be warming up to 550-570 ℃ again, insulation 1-2 hour; With 250-260 ℃/h of speed, be cooled to 350-360 ℃ again, insulation 30-50 minute, then with 220-230 ℃/h of speed, be cooled to 100-120 ℃, insulation 1-2 hour; With 240-250 ℃/h of speed, be warming up to 360-380 ℃ again, insulation 1-2 hour; With 220-230 ℃/h of speed, be cooled to 100-120 ℃ again, insulation 1-2 hour; With 200-210 ℃/h of speed, be warming up to 270-290 ℃ again, insulation 2-3 hour, takes out air cooling and get final product.
4. the production method of high manganese easy cutting brass 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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| CN201410011513.2A CN103757474A (en) | 2014-01-10 | 2014-01-10 | High-manganese free-cutting brass alloy material and preparation method thereof |
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| CN201410011513.2A CN103757474A (en) | 2014-01-10 | 2014-01-10 | High-manganese free-cutting brass alloy material and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104032175A (en) * | 2014-05-12 | 2014-09-10 | 蚌埠市宏威滤清器有限公司 | Lanthanum-containing brass alloy material and preparation method thereof |
| CN104032163A (en) * | 2014-05-12 | 2014-09-10 | 蚌埠市宏威滤清器有限公司 | Free-cutting brass alloy material and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1557981A (en) * | 2004-01-15 | 2004-12-29 | 宁波博威集团有限公司 | Non-lead free cutting antimony yellow copper alloy |
| CN103205596A (en) * | 2012-01-16 | 2013-07-17 | 摩登岛股份有限公司 | Lead-free antimony-titanium-brass alloy |
| 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 |
-
2014
- 2014-01-10 CN CN201410011513.2A patent/CN103757474A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1557981A (en) * | 2004-01-15 | 2004-12-29 | 宁波博威集团有限公司 | Non-lead free cutting antimony yellow copper alloy |
| CN103205596A (en) * | 2012-01-16 | 2013-07-17 | 摩登岛股份有限公司 | Lead-free antimony-titanium-brass alloy |
| 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 |
|---|---|---|---|---|
| CN104032175A (en) * | 2014-05-12 | 2014-09-10 | 蚌埠市宏威滤清器有限公司 | Lanthanum-containing brass alloy material and preparation method thereof |
| CN104032163A (en) * | 2014-05-12 | 2014-09-10 | 蚌埠市宏威滤清器有限公司 | Free-cutting brass alloy material and preparation method thereof |
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Application publication date: 20140430 |