CN107164648A - The grain refiner and its preparation and application of a kind of environmentally friendly brass - Google Patents
The grain refiner and its preparation and application of a kind of environmentally friendly brass Download PDFInfo
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- CN107164648A CN107164648A CN201710325284.5A CN201710325284A CN107164648A CN 107164648 A CN107164648 A CN 107164648A CN 201710325284 A CN201710325284 A CN 201710325284A CN 107164648 A CN107164648 A CN 107164648A
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- environmentally friendly
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
- C22C9/04—Alloys based on copper with zinc as the next major constituent
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Abstract
The grain refiner and its preparation and application of environmentally friendly brass, it, which constitutes percentage by weight, is：Al Sr alloys are that 36~38, Al B alloys are that 33~35, Zr is that 12~15, Al Fe alloys are that 5~8.5, NaAlF6 is that 6~7.5, CaCO3 is 3~4, and surplus is inevitable impurity.The preparation technology of grain refiner is simple; it is environment friendly and pollution-free; using effect is notable; the mobility of molten metal is improved after use; the crystal grain of environmentally friendly brass can be made to be decreased to 30 50 μm by original 70 100 μm; finished surface is more smooth, careful, improves flatness and finish and surface oxidation-resistant ability after polishing.
Description
Technical field
The present invention relates to a kind of fining agent of environmentally friendly brass and its preparation application method, environmentally friendly silizin is particularly suitable for use in
Grain refiner and its preparation and application.
Background technology
Ledrite has high machinability, and excellent cold and hot casting character cuts frangible, processing workpiece surface is bright and clean,
Be widely used in electronics telecommunication, household electrical appliances, aviation, five gold ornaments and bathroom water heating product, but the lead in ledrite be with
Free simple substance is present in solid solution, when being contacted with people, soil, water source, and lead will enter in water and nature, and environment is made
Into harm, while being also very big to Health Impact.For meet the requirement of environmental protection, some substitute the environmentally friendly brass production of ledrite
Product arise at the historic moment, such as silicon lead-free reflow, Bi brass, selenium brass etc..Because bismuth and selenium metal price are expensive, silicon metal price is reasonable,
It is a kind of preferably alternative environmental protection brass and silizin has preferable machinability, wearability and cold and hot casting character
Material.
Environmentally friendly silizin is mainly used in the hot-water heating part such as bathroom, valve, and production process is remelting-casting-cutting edge-finishing
Work-polishing-machining-plating-assembling-inspection-packaging-storage.Wherein cast, polishing and electroplate will to environmentally friendly silizin ingot casting
Ask very high, not only there is strict Composition Control requirement, and impurity, stomata can not occur, be mingled with, also to make ingot casting crystal grain tiny
Even, metal fluidity is good, it is ensured that material has good machinability, it is ensured that phenomenon of rupture is occurred without in punching course.In view of
This exploitation is a kind of to be used for the fining agent and its application method of environmentally friendly brass, in particular for the refinement of environmentally friendly silizin crystal grain refinement
Agent is particularly important.
CN201510714013 discloses a kind of silicon brass alloy and preparation method and application, and it is answered by adding B and Ti
Grain refiner is closed, regulates and controls phase composition and its distribution of alloy, but is not referred to degree of grain refinement and action effect.
The content of the invention
The technical problem to be solved in the present invention, is to develop a kind of grain refiner of environmentally friendly brass, and its prepare and make
With method, add after the fining agent, improve the mobility for melting brass, the brass ingot casting uniform small grains of casting, dendrite is few,
Quality of finish is good, effectively the quality of the environmentally friendly brass product of lifting.
The grain refiner of environmentally friendly brass, it, which constitutes percentage by weight, is：Al-Sr alloys are that 36~38, Al-B alloys are
33~35, Zr are that 12~15, Al-Fe alloys are that 5~8.5, NaAlF6 is that 6~7.5, CaCO3 is 3~4, and surplus is inevitable
Impurity.
Sr contents are 9~10% weight in the Al-Sr alloys, and surplus is Al；B content is 10 in described Al-B alloys
~12% weight, surplus is Al；Fe contents are 7~8% weight in described Al-Fe alloys, and surplus is Al.
A kind of grain refiner of silizin, it is that Al-Sr alloys are 36~38% weight that it, which is constituted, and Al-B alloys are 35% weight
Amount, Al-Fe alloys are 5% weight, and Zr is 12~14% weight, and NaAlF6 is 6~7% weight, and CaCO3 is 3% weight, and surplus is not
Impurity can be avoided.
A kind of grain refiner for polishing one-ton brass, it is that Al-Sr alloys are 35% weight that it, which is constituted, and Al-B alloys are 33% weight
Measure, Al-Fe alloys are 5.5% weight, Zr is 15% weight, and NaAlF6 is 7.5% weight, and CaCO3 is 3% weight, and surplus is can not
Avoid impurity.
A kind of grain refiner of Bi brass, it is that Al-Sr alloys are 38% weight that it, which is constituted, and Al-B alloys are 30% weight,
Al-Fe alloys are 8.5% weight, and Zr is 13% weight, and NaAlF6 is 7% weight, and CaCO3 is 3.5% weight, and surplus is inevitable
Impurity.
The preparation method of environmentally friendly brass grain refiner, by block Al-Sr alloys, Al-B alloys and Al-Fe alloy cars
It is whittled into curling bar and is broken into bits end, block zirconium is pulverized into thin shape, CaCO3 and NaAlF6 is commercially available white powder, will be upper
State raw material to mix in proportion, stir, pour into encapsulation in copper foil standby.
The application method of environmentally friendly brass grain refiner, copper fusing, drag for slag after, by copper water temperature control 1050 DEG C~
1070 DEG C, 0.03%~0.06% fining agent for accounting for copper water amount is added, 1~5min of artificial stirring after addition, last static 5~
10min, temperature starts casting at 1050~1060 DEG C.
As optimization, grain refiner is added after high pressure flame is beaten, is pressed at the 2/1 of copper water, stirring 1~
5min, stirring completes static 5~10min.
The advantage of the invention is that：Fining agent preparation technology is simple, environment friendly and pollution-free, easy to use, and effect significantly, is used
The crystallite dimension of environmentally friendly brass can be made to be decreased to 30-50 μm by original 60-100 μm afterwards, the mobility of molten metal is improved, it is internal
Impurity is also more uniformly distributed, in the absence of the defect that pit, meteor tail, depression are raised, and finished surface is more smooth, careful,
And surface of polished flatness and finish are more preferably, improve metal surface oxidation resistance.
Brief description of the drawings
Fig. 1 is 70 μm to be not added with fining agent crystallite dimension.
Fig. 2 is that the refinement dosage crystallite dimension of addition 0.03% is 35 μm.
Fig. 3 is no added fining agent.
Fig. 4 is the thin part agent of addition.
Fig. 5 is 70 μm to be not added with fining agent crystallite dimension.
Fig. 6 is that 0.03% fining agent crystallite dimension of addition is 30 μm.
Fig. 7 is no added 60 μm of fining agent crystallite dimension.
Fig. 8 is 40 μm of 0.04% fining agent crystallite dimension of addition.
Fig. 9 is no added 60 μm of fining agent crystallite dimension.
Figure 10 is 35 μm of 0.04% fining agent crystallite dimension of addition.
Figure 11 is 50 μm of the metallograph 0.03%KBF4 crystallite dimensions of comparative example 1.
Embodiment
The embodiment of the present invention is further described below in conjunction with accompanying drawing.
Embodiment 1
Choose 35 wt %, Al-Fe alloy of Al-Sr alloys 38wt%, Zr12 wt %, Al-B alloy 5 wt %, NaAlF67 wt
The wt % of %, CaCO3 3, prepare grain refiner, powder raw material is full and uniform according to the above ratio, recycle copper foil encapsulation.
Carry out environmentally friendly silizin meltings in 2 tons of line frequency furnaces, first together melt alfer with red copper, copper water into
Divide after the assay was approved, by copper water temperature control at 1050 DEG C~1070 DEG C, add fining agent, the addition of fining agent is copper water
The 0.03% of total amount, carries out 3~5min of artificial stirring after addition, last static 5~10min, temperature is opened at 1050~1060 DEG C
Begin to cast.
After fining agent, silizin crystal grain is greatly refined, and crystallite dimension is decreased to 35 μm by original 70 μm, has
Effect improves the mobility of molten metal, makes to be mingled with and is uniformly distributed, and product surface quality is bright and clean.As shown in Fig. 1~Fig. 4, Fig. 2 and figure
After 4 grain refiners being made up of for addition embodiment 1, the metallograph and ingot casting surface picture of silizin illustrate grainiess
Refinement and surface quality are highly polished.
Embodiment 2
Choose the wt %, NaAlF6 6 of 36 35 wt %, Al-Fe alloy of wt %, Zr14 wt %, Al-B alloy of Al-Sr alloys 5
The wt % of wt %, CaCO3 4, proportions grain refiner is full and uniform by fining agent powder raw material, recycles copper foil encapsulation.
Silizin meltings are carried out in 2 tons of line frequency furnaces, first together melt alfer with red copper, copper water is into go-on-go
Test it is qualified after, by copper water temperature control at 1050 DEG C~1070 DEG C, add copper water total amount 0.03% fining agent, after addition carry out
3~5min of artificial stirring, last static 5~10min, temperature starts casting at 1050~1060 DEG C.
After fining agent, silizin crystal grain is greatly refined, and crystallite dimension is decreased to 30 μm by original 70 μm, has
Effect improves the mobility of molten metal, makes to be mingled with and is uniformly distributed, and product surface quality is bright and clean.Shown in See Figure 5 and Fig. 6, Fig. 6 is
Grainiess ratio is not added with obvious refinement after the grain refiner addition silizin constituted by the present embodiment.
Embodiment 3
Choose 36 33 wt %, Al-Fe alloy of wt %, Zr15 wt %, Al-B alloy of Al-Sr alloys 5.5 wt %, NaAlF6
7.5 3 wt % of wt %, CaCO3, proportions grain refiner is full and uniform by fining agent powder raw material, recycles copper foil
Encapsulation.
Carry out the meltings of environmental protection polishing tin copper ingot in 2 tons of line frequency furnaces, when copper water composition after the assay was approved, by copper water
Temperature control is at 1050 DEG C~1070 DEG C, and addition is 0.04% fining agent of copper water total amount.Artificial stirring 3 is carried out after addition
~5min, last static 5~10min, temperature starts casting at 1050~1060 DEG C.
After fining agent, silizin crystal grain is greatly refined, and crystallite dimension is decreased to 30 μm by original 60 μm, has
Effect improves the mobility of molten metal, makes to be mingled with and is uniformly distributed, and product surface quality is bright and clean., can by Fig. 8 as shown in Fig. 7 and Fig. 8
Substantially represent that the grainiess ratio of polishing tin copper ingot after addition grain refiner is not added with obvious refinement.
Embodiment 4
Choose the wt %, NaAlF6 7 of 38 30 wt %, Al-Fe alloy of wt %, Zr13 wt %, Al-B alloy of Al-Sr alloys 8.5
The wt % of wt %, CaCO3 3.5, proportions grain refiner is full and uniform by fining agent powder raw material, recycles copper foil envelope
Dress.
Carry out the melting of Bi brass copper ingot in 2 tons of line frequency furnaces, when copper water composition after the assay was approved, by copper water temperature
Control is at 1010 DEG C~1050 DEG C, and addition is 0.04% fining agent of copper water total amount.Carried out after addition artificial stirring 3~
5min, last static 5~10min, temperature starts casting at 1020~1050 DEG C.
After fining agent, Bi brass crystal grain is greatly refined, and crystallite dimension is decreased to 35 μm by original 60 μm, has
Effect improves the mobility of molten metal, makes to be mingled with and is uniformly distributed, and product surface quality is bright and clean.As shown in Fig. 9 and Figure 10, Figure 10 is pressed
Ratio addition grain refiner ratio is not added with obvious refinement.
Comparative example 1
Silizin melting is carried out in 2 tons of line frequency furnaces, first together melts alfer with red copper, copper water composition, which is examined, to be closed
After lattice, by copper water temperature control at 1050 DEG C~1070 DEG C, outsourcing fining agent KBF4 is chosen, add copper water total amount 0.03% is thin
Agent, stirs 2.5min, and stirring completes static 5min, and static completion thermometric reaches that 1030 DEG C can cast.
After outsourcing fining agent, crystallite dimension by 70 μm by being decreased to 50 μm originally, and the refinement of comparative example 1 does not show
Write, as shown in figure 11.
Table 1, the environmentally friendly brass grain refiner using effect table of comparisons
Table 1 shows that grain refiner of the invention is better than existing to the degree of grain refinement of silizin, one-ton brass and Bi brass
KBF4, and its polished surface finish, red punching are not ftractureed, and turning ability is all preferable.
Claims (7)
1. the grain refiner of environmentally friendly brass, it, which constitutes percentage by weight, is：Al-Sr alloys are that 36~38, Al-B alloys are 33
~35, Zr are that 12~15, Al-Fe alloys are that 5~8.5, NaAlF6 is that 6~7.5, CaCO3 is 3~4, and surplus is inevitable miscellaneous
Matter.
2. the grain refiner of environmentally friendly brass according to claim 1, it is characterized in that Sr contents are in the Al-Sr alloys
9~10% weight, surplus is Al；B content is 10~12% weight in described Al-B alloys, and surplus is Al；Described Al-Fe is closed
Fe contents are 7~8% weight in gold, and surplus is Al.
3. the grain refiner of environmentally friendly brass according to claim 1, it is characterized in that a kind of grain refiner of silizin,
Its constitute be Al-Sr alloys be 36~38% weight, Al-B alloys be 35% weight, Al-Fe alloys be 5% weight, Zr be 12~
14% weight, NaAlF6 is 6~7% weight, and CaCO3 is 3% weight, and surplus is inevitable impurity.
4. the grain refiner of environmentally friendly brass according to claim 1, it is characterized in that a kind of crystal grain for polishing one-ton brass is thin
Agent, it is that Al-Sr alloys are 35% weight that it, which is constituted, and Al-B alloys are 33% weight, and Al-Fe alloys are 5.5% weight, and Zr is 15%
Weight, NaAlF6 is 7.5% weight, and CaCO3 is 3% weight, and surplus is inevitable impurity.
5. the grain refiner of environmentally friendly brass according to claim 1, it is characterized in that a kind of grain refiner of Bi brass,
It is that Al-Sr alloys are 38% weight that it, which is constituted, and Al-B alloys are 30% weight, and Al-Fe alloys are 8.5% weight, and Zr is 13% weight,
NaAlF6 is 7% weight, and CaCO3 is 3.5% weight, and surplus is inevitable impurity.
6. the application method of environmentally friendly brass grain refiner according to claim 1, it is characterized in that in copper fusing, dragging for slag
Afterwards, by copper water temperature control at 1050 DEG C~1070 DEG C, 0.03%~0.06% fining agent for accounting for copper water amount is added, descendant is added
Work stirs 1~5min, and last static 5~10min, temperature starts casting at 1050~1060 DEG C.
7. the application method of environmentally friendly brass grain refiner according to claim 1, it is characterized in that as optimization, it is high beating
Grain refiner is added after pressure flame, is pressed at the 2/1 of copper water, 1~5min is stirred, stirring completes static 5~10min.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710325284.5A CN107164648B (en) | 2017-05-10 | 2017-05-10 | A kind of grain refiner and its preparation and application of environmental protection brass |
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| CN201710325284.5A CN107164648B (en) | 2017-05-10 | 2017-05-10 | A kind of grain refiner and its preparation and application of environmental protection brass |
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| CN107164648B CN107164648B (en) | 2018-12-28 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110923497A (en) * | 2019-10-29 | 2020-03-27 | 福建工程学院 | Intermediate alloy for refining crystalline structure of copper and copper alloy, preparation method and application process thereof |
| CN111218561A (en) * | 2019-11-11 | 2020-06-02 | 宁波长振铜业有限公司 | Composite refining agent for reducing impurity element aluminum in waste brass and use method thereof |
| CN111455200A (en) * | 2020-04-16 | 2020-07-28 | 宁波金田铜业(集团)股份有限公司 | Preparation method for directly producing copper ingot for environment-friendly bath by using scrap copper |
| CN113699394A (en) * | 2021-08-30 | 2021-11-26 | 宁波金田铜业(集团)股份有限公司 | Red copper refiner, preparation method and preparation method of red copper casting blank |
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| CN103056322A (en) * | 2013-01-28 | 2013-04-24 | 梧州漓佳铜棒有限公司 | Compound for producing brass rods from scrap copper by horizontal continuous casting and smelting method |
| CN105274387A (en) * | 2015-10-27 | 2016-01-27 | 华南理工大学 | Leadfree high-strength and corrosion-resistance silicon brass alloy easy to be cut and preparation method and application |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103056322A (en) * | 2013-01-28 | 2013-04-24 | 梧州漓佳铜棒有限公司 | Compound for producing brass rods from scrap copper by horizontal continuous casting and smelting method |
| CN105274387A (en) * | 2015-10-27 | 2016-01-27 | 华南理工大学 | Leadfree high-strength and corrosion-resistance silicon brass alloy easy to be cut and preparation method and application |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110923497A (en) * | 2019-10-29 | 2020-03-27 | 福建工程学院 | Intermediate alloy for refining crystalline structure of copper and copper alloy, preparation method and application process thereof |
| CN110923497B (en) * | 2019-10-29 | 2021-03-16 | 福建工程学院 | Intermediate alloy for refining crystalline structure of copper and copper alloy, preparation method and application process thereof |
| CN111218561A (en) * | 2019-11-11 | 2020-06-02 | 宁波长振铜业有限公司 | Composite refining agent for reducing impurity element aluminum in waste brass and use method thereof |
| CN111455200A (en) * | 2020-04-16 | 2020-07-28 | 宁波金田铜业(集团)股份有限公司 | Preparation method for directly producing copper ingot for environment-friendly bath by using scrap copper |
| CN111455200B (en) * | 2020-04-16 | 2022-02-15 | 宁波金田铜业(集团)股份有限公司 | Preparation method for directly producing copper ingot for environment-friendly bath by using scrap copper |
| CN113699394A (en) * | 2021-08-30 | 2021-11-26 | 宁波金田铜业(集团)股份有限公司 | Red copper refiner, preparation method and preparation method of red copper casting blank |
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| CN107164648B (en) | 2018-12-28 |
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