CN104831116B - A kind of environment-protective free-cutting thermal crack resistant selenium Bi brass material and its preparation technology - Google Patents
A kind of environment-protective free-cutting thermal crack resistant selenium Bi brass material and its preparation technology Download PDFInfo
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- CN104831116B CN104831116B CN201510248820.7A CN201510248820A CN104831116B CN 104831116 B CN104831116 B CN 104831116B CN 201510248820 A CN201510248820 A CN 201510248820A CN 104831116 B CN104831116 B CN 104831116B
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- 229910001369 Brass Inorganic materials 0.000 title claims abstract description 35
- 239000010951 brass Substances 0.000 title claims abstract description 35
- 238000002360 preparation method Methods 0.000 title claims abstract description 32
- 239000011669 selenium Substances 0.000 title claims abstract description 31
- 238000005520 cutting process Methods 0.000 title claims abstract description 30
- 239000000463 material Substances 0.000 title claims abstract description 24
- 229910052711 selenium Inorganic materials 0.000 title claims abstract description 23
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 title claims abstract description 19
- 238000005516 engineering process Methods 0.000 title claims abstract description 17
- 239000000956 alloy Substances 0.000 claims abstract description 43
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000010949 copper Substances 0.000 claims abstract description 15
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 15
- 239000011701 zinc Substances 0.000 claims abstract description 15
- 239000000126 substance Substances 0.000 claims abstract description 14
- 239000000203 mixture Substances 0.000 claims abstract description 13
- 238000005266 casting Methods 0.000 claims abstract description 11
- 238000002844 melting Methods 0.000 claims abstract description 8
- 230000008018 melting Effects 0.000 claims abstract description 8
- 239000012535 impurity Substances 0.000 claims abstract description 4
- 238000003754 machining Methods 0.000 claims abstract description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 28
- 229910052797 bismuth Inorganic materials 0.000 claims description 21
- IRPLSAGFWHCJIQ-UHFFFAOYSA-N selanylidenecopper Chemical compound [Se]=[Cu] IRPLSAGFWHCJIQ-UHFFFAOYSA-N 0.000 claims description 20
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims description 18
- 229910052718 tin Inorganic materials 0.000 claims description 18
- 238000012545 processing Methods 0.000 claims description 16
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 15
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 14
- 238000000137 annealing Methods 0.000 claims description 13
- 229910000906 Bronze Inorganic materials 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 9
- 238000009413 insulation Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 7
- 238000013019 agitation Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 5
- 238000003723 Smelting Methods 0.000 claims description 5
- 238000009749 continuous casting Methods 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 5
- 238000001125 extrusion Methods 0.000 claims description 5
- 230000006698 induction Effects 0.000 claims description 5
- 238000004513 sizing Methods 0.000 claims description 5
- 238000007514 turning Methods 0.000 claims description 5
- 238000010792 warming Methods 0.000 claims description 5
- 238000005554 pickling Methods 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 125000003748 selenium group Chemical group *[Se]* 0.000 claims 1
- 239000002994 raw material Substances 0.000 abstract 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 6
- RIRXDDRGHVUXNJ-UHFFFAOYSA-N [Cu].[P] Chemical compound [Cu].[P] RIRXDDRGHVUXNJ-UHFFFAOYSA-N 0.000 description 5
- 238000010622 cold drawing Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000011056 performance test Methods 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 208000034656 Contusions Diseases 0.000 description 2
- 208000034526 bruise Diseases 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 229910000967 As alloy Inorganic materials 0.000 description 1
- 229910052684 Cerium Inorganic materials 0.000 description 1
- 241001124569 Lycaenidae Species 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 235000014987 copper Nutrition 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 229910052759 nickel Inorganic materials 0.000 description 1
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- 241000894007 species Species 0.000 description 1
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Abstract
The invention discloses a kind of environment-protective free-cutting thermal crack resistant selenium Bi brass material and its preparation technology, the chemical composition for being characterized in the selenium-bismuth-brass alloy material is Cu 58~61 by weight percentage, Bi 1.6~2.2, Sn 0.1~0.15, Se 0.1~0.65, surplus is zinc and inevitable impurity.Using getting the raw materials ready, dispensing, melting, ingot casting and cold and hot working be made needed for specification alloy material.Its tensile strength is σb360~550MPa, hardness HRB 65~75, elongation percentage δ 13~30%, high temperature hot tearing function admirable, may replace ledrite is used for drop stamping and the various structural members of machining making.
Description
Technical field
The present invention relates to a kind of environment-protective free-cutting thermal crack resistant selenium Bi brass material and its preparation technology, belong to metal alloy
Field of material technology.
Background technology
Ledrite has good cutting ability and preferable hot and cold processing characteristics, is widely used in water heating bathroom, electronics
The fields such as electrical equipment, horological instruments.But the easy dissolution of lead in brass, all there is larger harm to human body and environment.
At present, domestic also to substitute ledrite comprehensively without a kind of brass, the field for substituting ledrite is extremely limited.Bismuth with
Lead is in adjacent position in the periodic table of elements, and its physics and chemical property have many similarities, at present to bismuth generation
The most study of the lead-free reflow of lead.Various researchs of the domestic and international experts and scholars to Bi brass are made a general survey of, there is addition element species
It is many（Sn、Fe、Sb、Ni、Al、Si、Se、Te、P、La、Ce）, addition is larger, cost of material is high and industrial applications are difficult etc. asks
Topic.
Chinese Patent Application No. for 201310205084.8 patent disclosure it is a kind of " tin Bi brass and its production technology and
Produce the device of tin Bi brass ", the addition of tin can effectively adjust the cutting ability of the brass material in Bi brass in the invention,
But its volume is 0.10-0.6%.But because Sn fusing points are low, when its volume is too high, segregation is easily produced, is made under material overall performance
Drop.
The content of the invention
The technical problem of solution is needed for of the invention：
In order to overcome the above-mentioned deficiencies of the prior art, it is an object of the invention to provide a kind of environment-protective free-cutting thermal crack resistant selenium
Bi brass material.It is characterized in using industrial pure copper as matrix, adds appropriate Bi, Sn and Se, prepare polynary copper alloy material, change
Kind tradition bismuth-brass alloy material cost is higher, the phenomenon of founding cracking and annealing fracture easily occur, to meet industry to easy
Cutting, the demand of hot tearing Cu alloy material of good performance.
It is a further object of the present invention to provide a kind of environment-protective free-cutting thermal crack resistant selenium Bi brass material preparation process.
The technical solution adopted in the present invention is：
In order to solve the above technical problems, a kind of chemical composition of environment-protective free-cutting thermal crack resistant selenium Bi brass material of the present invention
It is Cu by weight percentage：58~61, Bi：1.6~2.2, Sn：0.1~0.15, Se：0.1~0.65, surplus is for zinc and not
Evitable impurity.Its content test method is with reference to YS/T668-2008 standards.
A kind of above-mentioned environment-protective free-cutting thermal crack resistant selenium Bi brass material preparation process is comprised the steps of：
（1）Melting
Purity is that 99.99 % cathode coppers are added in smelting furnace, under protection of the crystalline graphite powder as coverture, is warming up to
1150~1200 DEG C, after cathode copper is completely melt, 0.2~1.5wt% of selenium-copper intermediate alloy is added, 10~15min is incubated, then add
Enter 1.6~2.2wt% of 0.1~0.15wt% of high purity tin and high purity bismuth, tin, bismuth use electromagnetic agitation after being completely melt, agitation is molten
Pond.It is 1060~1080 DEG C to adjust temperature simultaneously, adds electrolytic zinc, and heating is skimmed, and conjunction in the middle of phosphor-copper is added after 10~15min
0.002~0.05wt% of gold, adjustment temperature is 1020~1050 DEG C, carries out water cooling continuous casting.
The preparation of above-mentioned selenium-copper intermediate alloy, referring to Chinese patent ZL201110190457.X《A kind of selenium-copper intermediate alloy
Preparation method》；The preparation of CuP14 intermediate alloys, referring to Chinese patent ZL200810148006.8《Closed in the middle of a kind of phosphor-copper
The preparation method of gold》.
（2）Extruding
By the copper alloy casting ingot of above-mentioned melting, it is put into after turning sizing in induction furnace, is heated to 650~850 DEG C, insulation
2~4min, takes out the ingot casting after heating and inserts progress crimp processing in horizontal extruder, obtain the extruding of all kinds of section bars
Base.
（3）Pickling and cold drawn processing
Cold drawn processing will be carried out after above-mentioned extrusion billet pickling, working modulus can be set according to cold drawn machining state, can processed
Into soft state, hard state, half-hard state etc..
（5）Annealing and aligning
Section bar after above-mentioned cold drawing deformation is placed in annealing furnace, in 200~300 DEG C of progress stress relief annealings of temperature, protected
Warm time control is in 0.5~1h；Then straightening processing is carried out on equipment for straightening.
In a kind of above-mentioned environment-protective free-cutting thermal crack resistant selenium Bi brass preparation technology, selenium is added in selenium-copper intermediate alloy form.
In a kind of above-mentioned environment-protective free-cutting thermal crack resistant selenium Bi brass preparation technology, phosphor bronze alloy with CuP14 in the middle of
Alloy form is added.
A kind of above-mentioned environment-protective free-cutting thermal crack resistant selenium Bi brass material preparation process, material addition sequence be tough cathode →
Selenium-copper intermediate alloy → high purity tin → high purity bismuth → electrolytic zinc → phosphor bronze alloy.
Compared with prior art, the beneficial effects of the invention are as follows：
1st, the present invention use selenium element with selenium-copper intermediate alloy form add, can change precipitation form of the bismuth in brass and
Distribution situation, crystal boundary is distributed in and transgranular with the element such as copper, zinc, bismuth formation frangible compounds, makes bismuth with block or spherical exist
In crystal boundary, its plasticity and cold and hot working performance are improved, it is to avoid scaling loss occurs for material, while improving the effect of alloy cutting ability.
2nd, the present invention uses phosphor bronze alloy to be added with CuP14, and the volatilization of phosphorus, has when can avoid being directly incorporated into P elements
Effect plays the effect of the deoxidier of phosphorus.
3rd, selenium-bismuth-brass alloy material performance of the present invention uses 230.1-2009 couples of GB/T228.1-2010, GB/T
Relevant test method is tested.Under the conditions of same test, selenium-bismuth-brass alloy material of the present invention is with the domestic trade mark
HBi60 bismuth-brass alloy material is compared, and is had further the advantage that：
（1）Its intensity and HBi60 materials are approached, its cutting ability and HPb63-3 for compared with 100%, reach 70% with
On.
（2）Elongation percentage is improved to 13~30% by 12~13%, improves more than 50%.
（3）HBi60 alloy materials hot bruise in the range of 650~800 DEG C is serious, and the present invention is in said temperature model
Enclose interior without hot bruise.
4th, the performance such as alloy material intensity of the present invention, cutting ability, elongation percentage can be entered by alloying component and technique
Row adjustment, to meet different condition demand.
5th, elemental selenium and add while Sn, can also reduce the volume of bismuth, products material cost can be reduced compared with HBi60
5~10%.
Embodiment
The present invention is specifically described by the following examples, it is necessary to it is pointed out here that be that the present embodiment is served only for
The present invention is further described, it is impossible to be interpreted as the limitation to invention protection domain, the person skilled in the art in the field can
With some the nonessential modifications and adaptations made according to the content of the invention described above.
Embodiment 1：
A kind of chemical composition of environment-protective free-cutting thermal crack resistant selenium-bismuth-brass alloy material is Cu by weight percentage：
59.39, Bi：2.0, Sn：0.110, Se：0.20, surplus is zinc.
Its preparation technology is as follows：
（1）Tough cathode 116.6kg is added in smelting furnace, under protection of the crystalline graphite powder as coverture, is warming up to
1200 DEG C, after cathode copper is completely melt, selenium-copper intermediate alloy 1kg is added, 10min is incubated, adds high purity tin 0.25kg and height
Pure bismuth 4kg, tin, bismuth use electromagnetic agitation after being completely melt, stir molten bath.
It is 1060~1080 DEG C to adjust temperature simultaneously, adds electrolytic zinc 76kg, and heating is skimmed, and phosphor-copper is added after 10min
Intermediate alloy 0.4kg, adjustment temperature is 1050 DEG C, carries out water cooling continuous casting.
The selenium-copper intermediate alloy chemical composition used in above-mentioned technique is by weight percentage for Se：46.5%, surplus is
Cu, selenium-copper intermediate alloy preparation method is referring to Chinese patent ZL201110190457.X《A kind of preparation side of selenium-copper intermediate alloy
Method》.
Above-mentioned phosphor bronze alloy chemical composition is P by weight percentage：9.6%, Fe0.006%, Si0.04%, surplus
For Cu, the preparation method of CuP14 intermediate alloys, referring to Chinese patent ZL200810148006.8《A kind of phosphor bronze alloy
Preparation method》.
（2）By the copper alloy casting ingot of above-mentioned melting, it is put into after turning sizing in induction furnace, is heated to 650 DEG C, insulation
4min, takes out the ingot casting after heating.
（3）Cold drawn processing is carried out after above-mentioned extrusion billet is used into sulfuric acid washing.
（4）Section bar after above-mentioned cold drawing deformation is placed in annealing furnace, in 200 DEG C of progress stress relief annealings of temperature, insulation
Time control is in 0.5h；Then straightening processing is carried out on equipment for straightening, Φ 11mm bars are processed into.
（5）Performance test is carried out to Φ 11mm bars：Tensile strength 474MPa, elongation percentage 16%, Rockwell hardness 72HRB,
Cutting ability 73%.Wherein cutting ability and HPb63-3（100%）Compare.
Embodiment 2：
A kind of chemical composition of environment-protective free-cutting thermal crack resistant selenium-bismuth-brass alloy material is Cu by weight percentage：
59.58, Bi：1.95, Sn：0.114, Se：0.34, surplus is zinc.
Its preparation technology is as follows：
（1）Tough cathode 116.5kg is added in smelting furnace, under protection of the crystalline graphite powder as coverture, is warming up to
1150 DEG C, after cathode copper is completely melt, add selenium-copper intermediate alloy 1.7kg, be incubated 13min, add high purity tin 0.25kg and
High purity bismuth 4kg, tin, bismuth use electromagnetic agitation after being completely melt, stir molten bath.
It is 1070 DEG C to adjust temperature simultaneously, adds electrolytic zinc 77kg, and heating is skimmed, and conjunction in the middle of phosphor-copper is added after 12min
Golden 0.4kg, adjustment temperature is 1030 DEG C, carries out water cooling continuous casting.
The selenium-copper intermediate alloy chemical composition used in above-mentioned technique is by weight percentage for Se：46.5%, surplus is
Cu, selenium-copper intermediate alloy preparation method is referring to Chinese patent ZL201110190457.X《A kind of preparation side of selenium-copper intermediate alloy
Method》.
Above-mentioned phosphor bronze alloy chemical composition is P by weight percentage：9.6%, Fe0.006%, Si0.04%, surplus
For Cu, the preparation method of CuP14 intermediate alloys, referring to Chinese patent ZL200810148006.8《A kind of phosphor bronze alloy
Preparation method》.
（2）By the copper alloy casting ingot of above-mentioned melting, it is put into after turning sizing in induction furnace, is heated to 750 DEG C, insulation
4min, takes out the ingot casting after heating.
（3）Cold drawn processing is carried out after above-mentioned extrusion billet is used into sulfuric acid washing.
（4）Section bar after above-mentioned cold drawing deformation is placed in annealing furnace, in 250 DEG C of progress stress relief annealings of temperature, insulation
Time control is in 0.75h；Then straightening processing is carried out on equipment for straightening, Φ 11mm bars are processed into.
（5）Performance test is carried out to Φ 11mm bars：Tensile strength 484MPa, elongation percentage 17%, Rockwell hardness 74HRB,
Cutting ability 72%.Wherein cutting ability and HPb63-3（100%）Compare.
Embodiment 3：
A kind of chemical composition of environment-protective free-cutting thermal crack resistant selenium-bismuth-brass alloy material is Cu by weight percentage：
60.18, Bi：1.93, Sn：0.117, Se：0.59, surplus is zinc.
Its preparation technology is as follows：
（1）Tough cathode 117.3kg is added in smelting furnace, under protection of the crystalline graphite powder as coverture, is warming up to
1150 DEG C, after cathode copper is completely melt, selenium-copper intermediate alloy 3kg is added, 15min is incubated, adds high purity tin 0.25kg and height
Pure bismuth 4kg, tin, bismuth use electromagnetic agitation after being completely melt, stir molten bath.
It is 1070 DEG C to adjust temperature simultaneously, adds electrolytic zinc 76kg, and heating is skimmed, and conjunction in the middle of phosphor-copper is added after 15min
Golden 0.4kg, adjustment temperature is 1040 DEG C, carries out water cooling continuous casting.
The selenium-copper intermediate alloy chemical composition used in above-mentioned technique is by weight percentage for Se：46.5%, surplus is
Cu, selenium-copper intermediate alloy preparation method is referring to Chinese patent ZL201110190457.X《A kind of preparation side of selenium-copper intermediate alloy
Method》.
Above-mentioned phosphor bronze alloy chemical composition is P by weight percentage：9.6%, Fe0.006%, Si0.04%, surplus
For Cu, the preparation method of CuP14 intermediate alloys, referring to Chinese patent ZL200810148006.8《A kind of phosphor bronze alloy
Preparation method》.
（2）By the copper alloy casting ingot of above-mentioned melting, it is put into after turning sizing in induction furnace, is heated to 850 DEG C, insulation
4min, takes out the ingot casting after heating.
（3）Cold drawn processing is carried out after above-mentioned extrusion billet is used into sulfuric acid washing.
（4）Section bar after above-mentioned cold drawing deformation is placed in annealing furnace, in 300 DEG C of progress stress relief annealings of temperature, insulation
Time control is in 1h；Then straightening processing is carried out on equipment for straightening, Φ 11mm bars are processed into.
（5）Performance test is carried out to Φ 11mm bars：Tensile strength 463MPa, elongation percentage 18%, Rockwell hardness 70HRB,
Cutting ability 74%.Wherein cutting ability and HPb63-3（100%）Compare.
The various embodiments described above show, no matter from single performance, or in combination property, and one kind environmental protection of the invention is easily cut
Cut thermal crack resistant selenium Bi brass material and be substantially better than the bismuth-brass alloy material that the domestic trade mark is HBi60.
Described above is only the preferred embodiment of the present invention, it is noted that before the technology of the present invention principle is not departed from
Put, some improvement can be made, these improvement also should be regarded as protection scope of the present invention.
Claims (4)
1. a kind of preparation technology of environment-protective free-cutting thermal crack resistant selenium Bi brass material, it is characterised in that the technique includes following step
Suddenly：
（1）Melting
Purity is that 99.99% cathode copper is added in smelting furnace, under protection of the crystalline graphite powder as coverture, is warming up to 1150
~1200 DEG C, after cathode copper is completely melt, 0.2~1.5wt% of selenium-copper intermediate alloy is added, 10~15min is incubated, adds height
1.6~2.2wt% of 0.1~0.15wt% of pure tin and high purity bismuth, tin, bismuth use electromagnetic agitation after being completely melt, stir molten bath, simultaneously
It is 1060~1080 DEG C to adjust temperature, adds electrolytic zinc, and heating is skimmed, and phosphor bronze alloy 0.002 is added after 10~15min
~0.05wt%, adjustment temperature is 1020~1050 DEG C, carries out water cooling continuous casting；
（2）Extruding
By the copper alloy casting ingot of above-mentioned melting, it is put into after turning sizing in induction furnace, it is heated to 650~
850 DEG C, 2~4min is incubated, the ingot casting after heating is taken out and inserts progress crimp processing in horizontal extruder, obtain each
The extruded stock of class section bar；
（3）Pickling and cold drawn processing
Cold drawn processing will be carried out after above-mentioned extrusion billet pickling, the cold drawn machining state setting working modulus according to specified by client,
It is processed into soft state, hard state or half-hard state；
（4）Annealing and aligning
Section bar after above-mentioned cold drawn processing is placed in annealing furnace, in 200~300 DEG C of progress stress relief annealings of temperature, during insulation
Between control in 0.5~1h；Then straightening processing is carried out on equipment for straightening；
The chemical composition of the selenium-bismuth-brass alloy material is by weight percentage：Cu：58~61%, Bi：1.6~2.2%,
Sn：0.1~0.15%, Se：0.1~0.65%, surplus is zinc and inevitable impurity.
2. a kind of preparation technology of environment-protective free-cutting thermal crack resistant selenium Bi brass material according to claim 1, its feature exists
Added in the phosphor bronze alloy in CuP14 intermediate alloys form.
3. a kind of preparation technology of environment-protective free-cutting thermal crack resistant selenium Bi brass material according to claim 1, its feature exists
In material addition sequence be cathode copper → selenium-copper intermediate alloy → high purity tin → high purity bismuth → electrolytic zinc → phosphor bronze alloy.
4. the environment-protective free-cutting thermal crack resistant selenium Bi brass material that preparation technology according to claim 1 is obtained, its feature exists
It is by weight percentage in the chemical composition of the selenium Bi brass material：Cu：58~61%, Bi：1.6~2.2%, Sn：0.1~
0.15%, Se：0.1~0.65%, surplus is zinc and inevitable impurity.
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| CN105908012A (en) * | 2016-05-13 | 2016-08-31 | 四川鑫炬矿业资源开发股份有限公司 | Environment-friendly lead-free easily-cutting anti-heat-cracking brass alloy material and preparation method thereof |
| CN107838432A (en) * | 2017-09-29 | 2018-03-27 | 成都理工大学 | A kind of preparation method of copper selenium intermediate alloy |
| CN110055439A (en) * | 2019-06-06 | 2019-07-26 | 扬州好管家科技信息咨询有限公司 | Electronic component manufacture high-ductility thermal crack resistant brass alloys and its preparation process |
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| JP2000319736A (en) * | 1999-05-07 | 2000-11-21 | Kitz Corp | Copper based alloy, production of this alloy and product using this alloy |
| CN101573462A (en) * | 2006-12-28 | 2009-11-04 | 株式会社开滋 | Lead-free brass alloy with excellent resistance to stress corrosion cracking |
| CN101440442A (en) * | 2007-11-22 | 2009-05-27 | 北京有色金属研究总院 | Leadless free-cutting bismuth brass alloy |
| CN102383004A (en) * | 2010-08-30 | 2012-03-21 | 宁波金田铜业(集团)股份有限公司 | Manganiferous lead-free forgeable easy-cutting brass and preparation method thereof |
| CN102002611A (en) * | 2010-10-15 | 2011-04-06 | 宁波金田铜业(集团)股份有限公司 | Free-cutting white brass alloy and manufacture method thereof |
| CN102952966A (en) * | 2012-11-08 | 2013-03-06 | 中国核动力研究设计院 | Bismuth brass alloy material and preparation process and hot stamping process thereof |
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| CN104831116A (en) | 2015-08-12 |
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