CN103282524B - Hot-working LEAD-FREE BRASS ALLOY - Google Patents
Hot-working LEAD-FREE BRASS ALLOY Download PDFInfo
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- CN103282524B CN103282524B CN201280002483.8A CN201280002483A CN103282524B CN 103282524 B CN103282524 B CN 103282524B CN 201280002483 A CN201280002483 A CN 201280002483A CN 103282524 B CN103282524 B CN 103282524B
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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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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/08—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of copper or alloys based thereon
Abstract
The present invention provides a kind of hot-working LEAD-FREE BRASS ALLOY, and it possesses good hot-workability and mechanical property.The hot-working LEAD-FREE BRASS ALLOY of the present invention contains the lead of below 28.0 weight %～the zinc of 35.0 weight %, 0.5 weight %～the silicon of 2.0 weight %, 0.5 weight %～the tin of 1.5 weight %, 0.5 weight %～the bismuth of 1.5 weight %, 0.10 weight %, remainder is made up of copper and inevitable impurity, wherein, zinc equivalent is in the range of 40.0～43.0, and the area occupation ratio of the κ phase after hot-working is less than 20%.
Description
Technical field
The present invention relates to hot-working LEAD-FREE BRASS ALLOY, it is excellent in terms of anti dezincification character and resistant to corrosion corrosivity,
And there is good hot-workability and mechanical property.
Background technology
For water channel tap metal fittings and general pipe arrangement water receiving utensil or various valve, in the past since always
Use the copper alloy such as bronze or brass, thus make full use of the material behavior of its excellence.These copper alloys require have use
In the good machinability of Product processing, the most under normal circumstances by giving its required being cut containing lead
Property.Such as, bell metal or the JIS H3250 such as JIS H5120CAC406 or CAC407 that machinability is excellent
The brass alloys such as C3604 or C3771 contain 1 weight %～the lead of 6 weight %.
But, lead can be to drinking water when can evaporate in the melting casting process of alloy or use as water receiving parts
Middle dissolution, thus can produce harmful effect to human body or environmental sanitation, and therefore the understanding as harmful element is very deep,
Tend in recent years strictly limit containing of lead.Therefore, require to develop a kind of lead-free free-cutting machinability copper alloy always.
Because of background as above, in silzin bronze system alloy, propose and employ a kind of Cu-Zn-Si system
Alloy, it obtains free-cutting machinability (with reference to patent document 1,2) by adding silicon under the conditions of lead-free.Except this
Outside, it is also proposed that have and add the Cu-Zn-Si-Sn system alloy of tin to improve the corrosion resistance of Cu-Zn-Si system alloy
Scheme (with reference to patent document 3).It addition, it is also proposed that have the machinability in order to improve Cu-Zn-Si system alloy further
And add the scheme (with reference to patent document 4) of the Cu-Zn-Si-Bi system alloy of bismuth and in order to improve corrosion resistance and to above-mentioned
Cu-Zn-Si-Bi system alloy adds the scheme (with reference to patent document 5) of the Cu-Zn-Si-Sn-Bi system alloy of tin.These
The mechanical property of alloy and anti dezincification character are excellent, have the machinability of excellence, and do not adding in the case of adding bismuth
The hot-workability of excellence is possessed in the case of adding the alloy of bismuth.During it addition, add bismuth in Cu-Zn-Si system alloy,
The advantage also with the expanded range of the waste material utilization melting raw material.
Prior art literature
Patent document
Patent document 1: No. 3917304 publications of Japanese Patent No.
Patent document 2: Japanese Unexamined Patent Publication 2001-64742 publication
Patent document 3: Japanese Unexamined Patent Publication 2002-12927 publication
Patent document 4: Japanese Unexamined Patent Publication 2009-7657 publication
Patent document 5: Japanese Patent Application 2010-84231 specification
Summary of the invention
Invent problem to be solved
Alloy disclosed in described each document can be described as with the harmfulness removing lead as main purpose.Therefore, in performance
Aspect, most important problem is maintenance free-cutting machinability in the case of not containing lead, it is ensured that machinability to a certain degree.
But, for described alloy, in the case of not containing bismuth, although have based on silicon based compound being cut
Property improves effect, but the most also cannot say it is sufficient, and actual conditions are in order to improve machinability and to have to certain
The degree of kind adds bismuth.It addition, be also desirable that containing bismuth from the viewpoint of waste material utilizes.
On the other hand, the LEAD-FREE BRASS ALLOY containing bismuth can carry out hot-working in the processing and forming that deflection is few, but
In the case of implementing the processing and forming that deflection is many, if not strict control bismuth addition and forging condition, the most easily
Produce the unfavorable conditions such as forging ruptures.It is reported, in the warm and hot forging of brass alloys, situation that product ruptures can be because of
Processing temperature and different.Upper and lower bound is there is for the processing temperature ruptured and be processed can not be produced,
Need to carry out heating, forging in this temperature province (hereinafter referred to as processing temperature scope).Such as, containing 0.7 weight %
The alloy of the patent document 5 of the bismuth of left and right needs to improve processing temperature, and processing temperature scope is the narrowest, therefore
It is difficult to temperature treatment, on this point of energy usage amount there is also problem.It addition, at the alloy of patent document 3
In, describe interpolation silicon be effective as the element making warm and hot forging good, but the most do not introduce about
The data of the hot-workability of the situation containing bismuth, processing temperature is the most only to be evaluated 750 DEG C of these levels,
Processing temperature scope is indefinite.
Inventor finds by inquiry: containing in the case of bismuth in Cu-Zn-Si-Sn system alloy, processing temperature scope becomes
Obtain the narrowest.Therefore, in order to this alloy system is implemented the processing and forming that deflection is many, strict controlled forge process bar is needed
Part, is therefore easily caused and operationally comes into question.That is, in order to by the excellent corrosion resistance of this alloy system with cut
Cutting property is applicable to more product, it is important that expanding processing temperature scope, it is as the first problem.
It addition, Cu-Zn-Si-Sn-Bi system alloy in order to improve anti dezincification character, resistant to corrosion corrosivity and be added with tin, but
Extensibility easily declines.In this alloy system, κ phase separates out with γ phase, easily makes mechanical property bad because of this precipitation situation
Change.Further, described precipitation situation is easily affected because of the thermal history etc. when manufacturing, it is therefore important that correctly
Ground is held the form of tissue and the relation of mechanical property and carries out suitable control.That is, Cu-Zn-Si-Sn-Bi is controlled
Be the mechanical property of alloy, particularly extensibility be the second problem.
The present invention completes to solve the problems referred to above, its objective is to provide a kind of hot-working lead-free reflow to close
Gold, this hot-working LEAD-FREE BRASS ALLOY possesses good hot-workability and mechanical property.
For the method solving problem
The main points of the present invention are illustrated.
The present invention relates to a kind of hot-working LEAD-FREE BRASS ALLOY, it is characterised in that this hot-working LEAD-FREE BRASS ALLOY
Containing 28.0 weight %～the zinc of 35.0 weight %, 0.5 weight %～the silicon of 2.0 weight %, 0.5 weight %～1.5 weights
Lead below the amount tin of %, 0.5 weight %～the bismuth of 1.5 weight %, 0.10 weight %, remainder is by copper and not
Evitable impurity is constituted, and zinc equivalent is in the range of 40.0～43.0, and the area occupation ratio of the κ phase after hot-working is 20%
Below.
It addition, the invention still further relates to a kind of hot-working LEAD-FREE BRASS ALLOY as described in scheme 1, it is characterised in that
Extensibility is more than 10%.
Invention effect
The present invention has obtained, because of as above composition, the hot-working possessing good hot-workability and mechanical property
Use LEAD-FREE BRASS ALLOY.That is, by containing 28.0 weight %～the zinc of 35.0 weight %, it is possible to obtain good heat and add
Work.As zinc, silicon is to obtain element necessary to good hot-workability, 0.5 weight %～2.0 weight
The interpolation of % is effective.Tin is favorably improved anti-Dezincification corrosion and resistant to corrosion corrosivity.Bismuth is to improve quilt
Machinability and add.Zinc equivalent determines according to zinc, silicon, the balance of other element, and it is to be used in particular for maintaining heat
The parameter of the balance of processability and mechanical property, can meet both character in the range of 40.0～43.0 simultaneously.Separately
Outward, it is less than 20% by making the area occupation ratio of κ phase such that it is able to obtain good mechanical property.
Accompanying drawing explanation
Fig. 1 is the explanatory diagram of zinc equivalent.
Fig. 2 is the table of the chemical composition illustrating the sample for hot-working test.
Fig. 3 is the explanatory diagram of the test film shape illustrating that hot-working tests.
Fig. 4 is the table illustrating forging test result.
Fig. 5 is the chart illustrating Si addition with the relation of processing temperature scope.
Fig. 6 is the chart illustrating Zn equivalent with the relation of processing temperature scope.
Fig. 7 is the table of the chemical composition illustrating the sample for tension test.
Fig. 8 is the table of the result of the test illustrating tension test.
Fig. 9 is the chart illustrating the Si addition in the case of low Zn equivalent with the relation of mechanical property.
Figure 10 is the chart illustrating the Si addition in the case of high Zn equivalent with the relation of mechanical property.
Figure 11 is the chemical composition of the sample of the relation illustrating the area occupation ratio of investigation Si addition and κ phase and extensibility
Table.
Figure 12 is the table of the relation illustrating the area occupation ratio of Si addition and κ phase and extensibility.
Figure 13 is the chart illustrating Si addition with the relation of the area occupation ratio of κ phase.
Figure 14 is the chart of the area occupation ratio illustrating κ phase and the relation of extensibility.
Figure 15 is to illustrate for erosion-corrosion test and the table of the chemical composition of the sample of Dezincification corrosion test.
Figure 16 is the explanatory diagram of the test film shape illustrating that erosion-corrosion tests.
Figure 17 is the table illustrating experimental condition.
Figure 18 is the table illustrating result of the test.
Figure 19 is the table of the result of the test illustrating that Dezincification corrosion tests.
Figure 20 is the table of the chemical composition illustrating the sample for machinability test.
Figure 21 is the table illustrating experimental condition.
Figure 22 is the table illustrating result of the test.
Figure 23 is the photo of the example illustrating captured microstructure.
Detailed description of the invention
By illustrating the effect of the present invention to come simply, the embodiments of the present invention preferably considered are illustrated.
The present invention provides a kind of hot-working LEAD-FREE BRASS ALLOY, rotten in order to have good anti dezincification character, resistant to corrosion
Erosion property, further ensures that the hot-workability of excellence and good mechanical property, and this hot-working LEAD-FREE BRASS ALLOY contains
28.0 weight %～the zinc of 35.0 weight %, 0.5 weight %～the silicon of 2.0 weight %, 0.5 weight %～1.5 weight %
Lead below tin, 0.5 weight %～the bismuth of 1.5 weight %, 0.10 weight %, remainder is by copper and inevitable
Impurity constitute, zinc equivalent is in the range of 40.0～43.0.
Hereinafter, in the present invention one-tenth being grouped into, mechanical features specific reason executed as described above and the present invention
Action effect carries out simple illustration.
Zinc (Zn)
Zinc is solid-solubilized in the matrix of Cu-Zn-Si series copper alloy, has the effect improving mechanical strength.It addition, it can
Drop low-alloyed fusing point and improve the mobility of motlten metal, improve castability.The most also have and make hot-working good
Effect, in order to obtain these effects, according to silicon addition described later and the relation of zinc equivalent, need containing 28.0
Zinc more than weight %.
On the other hand, if zinc is more than 35.0 weight %, it is likely that because of with silicon addition described later and the pass of zinc equivalent
System, makes hot-workability deteriorate on the contrary；It is furthermore possible that make mechanical property bad because of the precipitation of hard phase more than necessary amount
Change.Due to these reasons above-mentioned, the content of zinc is 28.0 weight %～35.0 weight %.
Silicon (Si)
Silicon plays a role as deoxidation material when melting, and it can improve casting by improving the mobility of motlten metal
The property made.It addition, a part of silicon is solid-solubilized in matrix improves mechanical strength, another part silicon produces with zinc effect simultaneously
Give birth to as the chip-breaking during machining hard phase of function, improve machinability.
Further inventor is repeated investigation, found that the processing containing Cu-Zn-Sn-Si system alloy during bismuth
Temperature range (upper limit of the processing temperature that can not carry out warm and hot forging with rupturing deducts the value of lower limit) is tremendously
Improve so following the fact.
Heating period when hot-working, bismuth has the easy aggegation character at crystal boundary, it is believed that this is to cause hot-workability
Principal element hindered.But, by adding appropriate silicon, it is possible to prevent the aggegation of bismuth, for preventing casting
It is effective for rupturing.In order to obtain these effects, need the silicon more than containing 0.5 weight %.On the other hand, if with
Containing more than the mode of 2.0 weight %, even if then in the case of keeping optimal zinc equivalent, hot-workability also can deteriorate；
Appearance further as hard phase more than necessary amount, it is possible to make mechanical property deteriorate.Due to such reason,
The content of silicon is 0.5 weight %～2.0 weight %.
Tin (Sn)
Tin is effective for improving anti dezincification character and resistant to corrosion corrosivity.Have especially for improving resistant to corrosion corrosivity
Effect；In order to obtain these effects, need to add the tin of more than 0.5 weight %.On the other hand, if with more than 1.5 weights
The mode of amount % contains, it is likely that make mechanical property deteriorate.Due to such reason, the content of tin is 0.5 weight
%～1.5 weight %.
Bismuth (Bi)
Bismuth is in the case of less than 0.5 weight %, it is virtually impossible to confirm the improvement effect of machinability, but by adding
Adding the bismuth of more than 0.5 weight %, machinability is improved according to addition.But, bismuth is to make hot-workability bad
The reason changed, the most a large amount of interpolations.It addition, bismuth is not only the reason of hot-workability deterioration, it is also mechanical property
The reason of deterioration, therefore adds to 1.5 weight %.
Lead (Pb)
For lead so that it is content is below 0.10 weight %, it is possible to substantially avoid due at alloy
Dissolution in drinking water etc. when melting the evaporation in casting process or use as water receiving parts and cause to human body
Endanger with sanitary lead.Due to such reason, specify to be limited to below 0.10 weight % by the content of lead.
Copper (Cu)
Copper is to weaken Dezincification corrosion sensitiveness, improve the element of corrosion resistance and mechanical property, but in alloy of the present invention,
Its content determines as remainder according to the balance with zinc and silicone content, the content of essence be 59.0 weight %～
71.0 weight %.
Zinc equivalent
Zinc equivalent is the important parameter in order to broadly keep the processing temperature scope in alloy of the present invention.As it has been described above,
By being properly added silicon, it is possible to broadly keep processing temperature scope, but it is insufficient for being only managed silicon, logical
Cross calculated zinc being defined property of the equivalent management to the balance with silicon and zinc etc., it is possible to keep more reliably
Wide in range processing temperature scope.The present inventor further investigation reveals that, if the zinc equivalent more than 40.0 in alloy of the present invention,
Then there is processing temperature scope and can meet the industrialness such scope of requirement.On the other hand, if zinc equivalent is more than 43.0,
Then it is likely to result in the deterioration of mechanical property.Due to such background, zinc equivalent is 40.0～43.0.
It should be noted that zinc equivalent is obtained according to guilett formula (zinc equivalent=100 × (B+ Σ tq)/(A+B+ Σ tq)),
The zinc equivalent of Bi is 1 calculating (with reference to Fig. 1) with coefficient.
The quantitative proportion of κ phase or heat treatment
By adding above-mentioned each element and implementing hot-working so that the excellent properties of alloy of the present invention is played, but
Ductility aspect, slightly shows insufficient because of cooling velocity during hot-working and working modulus sometimes.In order to make the present invention close
The ductility of gold is good, needs to be controlled metal structure, by making the area occupation ratio of the κ phase in alloy of the present invention be
Less than 20%, it can be ensured that ductility.Therefore the area occupation ratio making κ phase is less than 20%.It should be noted that for
The method controlling tissue is not particularly limited, and can enumerate and utilize hot worked method to be controlled or heat treatment etc..
Embodiment
Based on accompanying drawing, the specific embodiment of the present invention is illustrated.
Using the alloy (alloy of the present invention) belonging to the present invention and compare alloy as sample, carry out following shown in examination
Test.
1) hot-working test
The chemical composition of the sample tested for hot-working shown in Fig. 2.The silicon carbide rod furnace utilizing test to melt is carried out
Melting, the molten metal casting being adjusted to the chemical composition such as Fig. 2 becomes external diameter is 88mm, a length of 120mm
Metal die, be machined into external diameter be 78mm, a length of 90mm.The steel billet extrusion that machining is obtained
It is processed into a diameter of 22mm, by the extrusion rod obtained, is processed as test film shape as shown in Figure 3.Different
Under conditions of processing temperature, these test films are forged by the working modulus with 80%.Herein, working modulus is calculated by following formula
Go out.
Specimen height before working modulus=100 × (specimen height after specimen height-forging before forging)/forging
Test film (sample) after visual observations forging, obtains and can not produce the processing temperature that carries out with rupturing forging
On be limited to lower limit, be defined as processing temperature scope, be evaluated.It should be noted that in all tests,
Heat time is 20 minutes.The processing temperature scope of each sample is shown in Fig. 4～6.
A validity that () adds about silicon
Fig. 5 shows the validity that alloy of the present invention adds silicon.Understand, in the case of not adding silicon, processing
Temperature range is narrow, along with the interpolation of silicon, processing temperature expanded range.Described effect is by adding 0.5 weight %
Above silicon just can form the processing temperature scope that disclosure satisfy that requirement.On the other hand, if addition is more than 2.0 weight
%, then processing temperature scope is tended to reduce on the contrary, therefore can determine whether that silicon is 0.5 weight %～2.0 weight % are effective
's.
B () is about the validity of zinc equivalent
Then, Fig. 6 shows the validity of zinc equivalent.Can determine whether out to make processing temperature scope in alloy of the present invention
Keeping good, zinc equivalent must be 40.0～43.0 in the range of this；And confirm described in combination by add silicon
The effect expanding processing temperature scope suitably controls the necessity of zinc equivalent.
2) tension test of hot-working material
Fig. 7 illustrates the chemical composition of the test material for tension test.It is cast as a diameter of 45mm, a length of 100mm
Metal die, be machined into a diameter of 40mm, the steel billet of a length of 75mm.Then, at 650 DEG C～750 DEG C
Heating steel billet, after enforcement extrusion processing makes a diameter of 10mm, machining is JIS Z220114A examination
Test sheet, utilize universal testing machine to implement tension test.Result is shown in Fig. 8～10.
In the case of the impact being conceived to silicon addition, confirming extensibility has inclining of decline corresponding to silicon addition
To, particularly in the case of zinc equivalent height, described decline is inclined to significantly.Understand, be near 40.6 at zinc equivalent
In the case of in silicon be near 1.0 weight %, in the case of zinc equivalent is near 42.5 near 2.0 weight %,
Hot strength increases again after tending to temporarily decline.
3) metal structure and mechanical property
As it has been described above, alloy of the present invention has the hot-workability of excellence, suitably control Si addition and zinc equivalent is weight
Want.But, during zinc equivalent height, there is the tendency easily declined in extensibility, the control of tissue also can become problem.
In alloy of the present invention, κ phase is main composition tissue with α phase, wherein, is conceived to the quantitative proportion of κ phase to machine
The impact of tool characteristic, has carried out structure observation.Use the sample for described tension test, utilize light microscope
Shoot the image of 500 times respectively 5 positions, utilize image processing software to determine quantitative proportion (Figure 23 of κ phase
In show an example of captured photo).These results are shown in Figure 11～Figure 14.By these structure observations,
The inventors discovered that the following fact.It is found that the extensibility of alloy system of the present invention exists the strongest with the area occupation ratio of κ phase
Correlation, when improving extensibility, needs to suppress lower the area ratio of κ phase.
If arranging the area ratio of κ phase with the relation of silicon addition, then the area ratio of κ phase corresponds to silicon addition
And increase (with reference to Figure 13).It addition, the relation of area occupation ratio and the extensibility for κ phase, if the area occupation ratio of κ phase is
Less than 20%, then extensibility was more than 10% (with reference to Figure 14).Therefore, the area occupation ratio of the κ phase in alloy of the present invention needs
It is less than 20%.
4) corrosion test
A () erosion-corrosion is tested
Figure 15 illustrates the chemical composition of the test material for erosion-corrosion test.Utilize the silicon carbide rod furnace that test melts
Melt, the molten metal casting being adjusted to the chemical composition such as Figure 15 is become a diameter of 40mm, a length of
The metal die of 100mm, is subsequently processed into test film shape as shown in figure 16.Use these test films, at figure
Test is implemented under the experimental condition of 17.Result of the test is shown in Figure 18.Be can determine whether out by these results, with CAC406
Comparing, alloy of the present invention is the poorest, but has had the biggest improvement compared with free-cutting brass.
B () Dezincification corrosion is tested
Sample uses the sample as testing with described erosion-corrosion.Test is to utilize on the basis of ISO6509 method
Method is carried out.Result of the test is shown in Figure 19.Alloy of the present invention has obtained maximum corrosion depth and has been below 100 μm
The best result.
5) machinability test
Figure 20 shows the chemical composition of the test material for machinability test.Utilize the silicon-carbon that test melts
Rod stove melts, and the molten metal casting being adjusted to the chemical composition such as Figure 20 becomes JIS H5120E metal pattern
Tool, carries out the external diameter processing of test film under the machining condition shown in Figure 21, is measured its cutting resistance.Examination
Test result and be shown in Figure 22.Can confirm that, compare with leaded bronze or leaded brass, the resistance of alloy of the present invention is high,
But be peer-level without Allen's metal.
In accordance with the above, it is possible to confirm that following hot-working LEAD-FREE BRASS ALLOY possesses good hot-workability and machinery
Characteristic, described hot-working LEAD-FREE BRASS ALLOY contain 28.0 weight %～the zinc of 35.0 weight %, 0.5 weight %～
The silicon of 2.0 weight %, 0.5 weight %～the tin of 1.5 weight %, 0.5 weight %～the bismuth of 1.5 weight %, 0.10 weight
The lead of below %, remainder is made up of copper and inevitable impurity, and zinc equivalent is at the model of 40.0～43.0
In enclosing.
Claims (2)
1. one kind through hot worked LEAD-FREE BRASS ALLOY, it is characterised in that this contains through hot worked LEAD-FREE BRASS ALLOY
There are 28.0 weight %～the zinc of 35.0 weight %, 0.5 weight %～the silicon of 2.0 weight %, 0.5 weight %～1.5 weight %
Tin, 0.5 weight %～the bismuth of 1.5 weight %, lead below 0.10 weight %, remainder is by copper and can not keep away
The impurity exempted from is constituted, and zinc equivalent is in the range of 40.0～43.0, and the area occupation ratio of κ phase is less than 20%.
2. as claimed in claim 1 through hot worked LEAD-FREE BRASS ALLOY, it is characterised in that extensibility is 10%
Above.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011286159A JP5143948B1 (en) | 2011-12-27 | 2011-12-27 | Lead-free brass alloy for hot working |
| JP2011-286159 | 2011-12-27 | ||
| PCT/JP2012/060466 WO2013099315A1 (en) | 2011-12-27 | 2012-04-18 | Lead-free brass alloy for hot processing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103282524A CN103282524A (en) | 2013-09-04 |
| CN103282524B true CN103282524B (en) | 2016-08-31 |
Family
ID=47789898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280002483.8A Active CN103282524B (en) | 2011-12-27 | 2012-04-18 | Hot-working LEAD-FREE BRASS ALLOY |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20140112821A1 (en) |
| JP (1) | JP5143948B1 (en) |
| KR (1) | KR20140113872A (en) |
| CN (1) | CN103282524B (en) |
| TW (1) | TWI539015B (en) |
| WO (1) | WO2013099315A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11788173B2 (en) | 2019-06-25 | 2023-10-17 | Mitsubishi Materials Corporation | Free-cutting copper alloy, and manufacturing method of free-cutting copper alloy |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10358696B1 (en) | 2014-02-07 | 2019-07-23 | Chase Brass And Copper Company, Llc | Wrought machinable brass alloy |
| US9951400B1 (en) * | 2014-02-07 | 2018-04-24 | Chase Brass And Copper Company, Llc | Wrought machinable brass alloy |
| CZ2015703A3 (en) * | 2015-10-07 | 2017-01-18 | Comtes Fht A.S. | Machinable brass with a reduced lead content suitable for forming by cold rolling |
| KR101969010B1 (en) * | 2018-12-19 | 2019-04-15 | 주식회사 풍산 | Lead free cutting copper alloy with no lead and bismuth |
| TWI751825B (en) * | 2019-12-11 | 2022-01-01 | 日商三菱綜合材料股份有限公司 | Free-cutting copper alloy and manufacturing method of free-cutting copper alloy |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1089662A (en) * | 1992-12-04 | 1994-07-20 | 梦境有限公司 | Brass alloys |
| CN1521281A (en) * | 2003-02-13 | 2004-08-18 | ͬ�Ϳ�ҵ��ʽ���� | Copper-based alloy excellent in dezincing resistance |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001064742A (en) * | 1999-06-24 | 2001-03-13 | Chuetsu Metal Works Co Ltd | Brass alloy excellent in corrosion resistance, mechinability and hot workability |
| JP3824944B2 (en) * | 2002-02-25 | 2006-09-20 | 同和鉱業株式会社 | Copper alloy excellent in stress corrosion cracking resistance and dezincing resistance and manufacturing method thereof |
| JP4620963B2 (en) * | 2004-03-31 | 2011-01-26 | Ｄｏｗａホールディングス株式会社 | Brass, manufacturing method thereof, and parts using the same |
| JP5454144B2 (en) * | 2007-10-10 | 2014-03-26 | Ｔｏｔｏ株式会社 | Lead-free free-cutting brass with excellent castability |
| JP2011214094A (en) * | 2010-03-31 | 2011-10-27 | Joetsu Bronz1 Corp | Lead-free free-machining brass alloy |
-
2011
- 2011-12-27 JP JP2011286159A patent/JP5143948B1/en active Active
-
2012
- 2012-04-18 KR KR1020137006081A patent/KR20140113872A/en not_active Application Discontinuation
- 2012-04-18 US US14/127,212 patent/US20140112821A1/en not_active Abandoned
- 2012-04-18 WO PCT/JP2012/060466 patent/WO2013099315A1/en active Application Filing
- 2012-04-18 CN CN201280002483.8A patent/CN103282524B/en active Active
- 2012-11-09 TW TW101141840A patent/TWI539015B/en active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1089662A (en) * | 1992-12-04 | 1994-07-20 | 梦境有限公司 | Brass alloys |
| CN1521281A (en) * | 2003-02-13 | 2004-08-18 | ͬ�Ϳ�ҵ��ʽ���� | Copper-based alloy excellent in dezincing resistance |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11788173B2 (en) | 2019-06-25 | 2023-10-17 | Mitsubishi Materials Corporation | Free-cutting copper alloy, and manufacturing method of free-cutting copper alloy |
| US11814712B2 (en) | 2019-06-25 | 2023-11-14 | Mitsubishi Materials Corporation | Free-cutting copper alloy and method for producing free-cutting copper alloy |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201335391A (en) | 2013-09-01 |
| WO2013099315A1 (en) | 2013-07-04 |
| CN103282524A (en) | 2013-09-04 |
| JP2013133529A (en) | 2013-07-08 |
| JP5143948B1 (en) | 2013-02-13 |
| TWI539015B (en) | 2016-06-21 |
| KR20140113872A (en) | 2014-09-25 |
| US20140112821A1 (en) | 2014-04-24 |
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