[go: up one dir, main page]

WO2014155692A1 - Alliage de laiton pour composants de distribution d'eau du robinet - Google Patents

Alliage de laiton pour composants de distribution d'eau du robinet Download PDF

Info

Publication number
WO2014155692A1
WO2014155692A1 PCT/JP2013/059593 JP2013059593W WO2014155692A1 WO 2014155692 A1 WO2014155692 A1 WO 2014155692A1 JP 2013059593 W JP2013059593 W JP 2013059593W WO 2014155692 A1 WO2014155692 A1 WO 2014155692A1
Authority
WO
WIPO (PCT)
Prior art keywords
mass
content
brass alloy
less
dezincification corrosion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2013/059593
Other languages
English (en)
Japanese (ja)
Inventor
浩士 山田
山本　匡昭
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kurimoto Ltd
Original Assignee
Kurimoto Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kurimoto Ltd filed Critical Kurimoto Ltd
Priority to JP2013536344A priority Critical patent/JP5416323B1/ja
Priority to PCT/JP2013/059593 priority patent/WO2014155692A1/fr
Publication of WO2014155692A1 publication Critical patent/WO2014155692A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • 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
    • 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
    • C22C9/06—Alloys based on copper with nickel or cobalt as the next major constituent

Definitions

  • This invention relates to a brass alloy containing zinc, and in particular, to a brass alloy for water supply members used in a water supply route or the like.
  • a copper alloy containing 20-40% zinc is called brass or brass, which has excellent castability, ductility, and machinability, and also has a lustrous appearance similar to gold, and is used in various applications.
  • Patent Document 1 discloses that tin is 0.3 to 1.0%, nickel is 0.5 to 1.0%, aluminum is 0.4 to 8%, phosphorus is 0.01 to 0.03%, A brass alloy containing 1.0 to 2.0% of bismuth and having a total of tin, nickel and aluminum phosphorus of 1.5% or more is described.
  • the brass alloy described in Patent Document 1 is composed of a balance of three components of tin, nickel, and aluminum in addition to the amount of zinc, and has many main components, including depletion of zinc during actual production. There was a problem that quality control was difficult.
  • the present invention reduces the types of main components, facilitates quality control during production, suppresses dezincing corrosion, has excellent mechanical properties, machinability, castability, and excellent versatility.
  • the purpose is to obtain an alloy.
  • Ni is contained in an amount of 0.3 to 5.5% by mass
  • P is contained in an amount of 0.005 to 0.5% by mass
  • Bi is contained in an amount of 0.1 to 5.0% by mass.
  • the feature of the present invention lies in that necessary physical properties are achieved in a wide range of Zn amount by the balance between Ni and P while excluding the component intentionally containing Sn and Al or Sn.
  • Ni exhibits an effect of preventing dezincification corrosion by dissolving with copper.
  • the dezincification corrosion suppressing effect was sufficiently exhibited, and the effect was reinforced by P and Bi.
  • P and Bi are excessive, the mechanical properties deteriorate, so the range is limited.
  • the brass alloy according to the present invention may contain other trace elements as long as the above dezincification corrosion performance and mechanical properties are not impaired.
  • Specific examples of the trace element include elements other than those described above having at least each content of less than 1.0% by mass.
  • elements such as Sn, Si, Fe, Mn, Mg, Pb, Cd, and Se that can be mixed as impurities can be used. These elements may be difficult to avoid mixing from the raw materials in the production of the alloy. However, the smaller the content, the better the effects of the present invention.
  • elements that may cause harm when the amount of elution is large such as Pb, Cd, and Se, are preferably as small as possible regardless of physical properties such as mechanical properties and dezincification corrosion resistance, and are less than the detection limit. It is desirable to be.
  • the brass alloy according to the present invention contains B in the range of 0.15% by mass or less in addition to the above components, the dezincification corrosion resistance is further improved and the mechanical properties are also suitable. Therefore, it is preferable.
  • the brass alloy according to the present invention may contain Al in the range of 1.0% by mass or less in addition to the above components.
  • a brass alloy having a high dezincification corrosion-inhibiting effect and excellent mechanical properties, etc., in which a suitable physical property cannot be obtained unless rigorously prepared for a large number of components in the past. Can be manufactured.
  • the present invention is a brass alloy containing at least Ni, P, Bi and Zn. Dezincification corrosion is suppressed mainly by addition of Ni and supplementarily P and Bi.
  • the brass alloy according to the present invention contains 0.3% by mass or more of Ni.
  • Ni By containing Ni, there is an effect that mechanical properties such as tensile strength and anti-dezincing corrosion resistance are improved. This effect is considered to appear when Ni dissolves in Cu.
  • the content of Ni needs to be 5.5% by mass or less, and is preferably 4.5% by mass or less.
  • content of Ni is prescribed
  • the brass alloy according to the present invention needs to contain 0.005% by mass or more of P, and preferably contains 0.03% by mass or more.
  • P When P is contained, even a slight amount greatly contributes to dezincification corrosion resistance. If it is less than 0.005% by mass, this effect tends to be insufficient.
  • the P content needs to be 0.5% by mass or less, and is preferably 0.25% by mass or less. Exceeding 0.25% by mass tends to cause some problems in elongation, and exceeding 0.5% by mass not only tends to cause problems in tensile strength, but also tends to cause shrinkage. Prone to various problems.
  • the brass alloy according to the present invention needs to contain 0.1% by mass or more of Bi, and preferably contains 0.3% by mass or more.
  • Bi is finely dispersed in the alloy to dramatically improve the machinability and exhibit anti-dezincing corrosion resistance. However, if it is less than 0.1% by mass, these effects become insufficient. End up. On the other hand, if there is too much Bi, not only the dezincification corrosion resistance is lowered, but also the mechanical properties are liable to be lowered, so it is necessary to be 5.0% by mass or less, and 4.0% by mass. % Or less is preferable.
  • the brass alloy according to the present invention may contain other trace elements in addition to the above elements.
  • Other trace elements are at least less than 0.5% by mass, and include elements other than those described above.
  • Sn, Mn, Fe, Pb, Si, Mg, Cd, Se, etc. are mentioned.
  • Sn, Mn, Fe, Si, Mg, and Pb are derived from the raw material and easily mixed as impurities.
  • the content of Sn as a trace element (impurity) needs to be less than 0.3% by mass, and preferably less than 0.1% by mass.
  • the brass alloy according to the present invention makes it easy to produce a stable quality alloy by reducing the number of main components that determine quality, and it is difficult to balance with other components when Sn is excessively contained. Become. Specifically, when it is 0.3% by mass or more, dezincification corrosion resistance is liable to be reduced, and it becomes difficult to balance the entire alloy. In order to stabilize the quality during production, the smaller the Sn content, the better.
  • the content of elements other than Sn may be less than 0.5 mass% per element, and is preferably less than 0.3 mass%.
  • Pb is relatively easy to mix, but it is desirable to avoid mixing as much as possible, preferably less than 0.3% by mass, and more preferably less than 0.1% by mass.
  • Cd and Se are harmful per se, and if they are used in a large amount for water supply components, these components may be dissolved in water. Therefore, the amount is preferably less than 0.1% by mass and contained as an inevitable impurity. The following is more preferable, and it is most preferable that it is less than the detection limit.
  • other trace elements including Sn are preferably contained as inevitable impurities in order to exhibit the effects of the present invention more stably.
  • the brass alloy according to the present invention may contain B in addition to the above elements.
  • B By containing 0.001% by mass or more of B, the mechanical properties and the dezincification corrosion resistance can be further improved from the brass alloy having the compounding ratio specified above. Preferably, it is 0.002 mass% or more.
  • the content of B is preferably 0.150% by mass or less, more preferably 0.100% by mass or less, and further preferably 0.050% by mass or less.
  • the brass alloy according to the present invention may contain Al in addition to the above elements.
  • Al By containing 0.2% by mass or more of Al, the tensile strength can be further improved from the brass alloy having the compounding ratio specified above.
  • the Al content is preferably 1.0% by mass or less, and more preferably 0.8% by mass or less.
  • the amount of Zn contained in the brass alloy according to the present invention is specified together with the content of Ni described above. Zn may cause dezincification corrosion instead of improving mechanical properties.
  • Zn may cause dezincification corrosion instead of improving mechanical properties.
  • the range in which the balance between mechanical properties and dezincification resistance is good is extremely narrow. There's a problem.
  • Ni when Ni is contained, the range in which the balance can be secured with respect to the Zn content can be expanded, and there is an effect of reducing the difficulty in manufacturing the brass alloy according to the present invention.
  • the allowable range of Zn spread by this effect appears as the following inequalities (1) and (2). This indicates that the allowable range in which Zn can exist increases as the amount of Ni increases.
  • the Zn content is preferably 33% by mass or more.
  • the Zn content is large and deviates from the condition of the formula (2), the dezincification corrosion resistance becomes insufficient, but if Ni is large, the influence of the increase in Zn can be suppressed accordingly. .
  • the brass alloy according to the present invention can be used for casting in which it is melted and poured into a mold, and particularly when it is used for a die casting product, the effect can be suitably exhibited. Moreover, you may use for a forging, a wrought copper product, etc. In any case, it is possible to suppress the formation of ⁇ -phase where dezincification is likely to proceed, but even if the crystal structure is likely to change, the mechanical properties and machinability of the material are ensured within the above blending ratio range. However, elution and dezincification corrosion can be suppressed.
  • the brass alloy according to the present invention excludes Sn from the main components for which the blending ratio must be adjusted in manufacturing, even if it is manufactured by casting in which strict quality control is difficult at the time of manufacturing, as intended It is easy to manufacture products with the necessary characteristics such as anti-dezincing corrosion resistance and mechanical properties.
  • the diameter d 0 of the rod-shaped portion was 4 mm
  • the original point distance L 0 was 20 mm
  • the columnar parallel portion length L c was 30 mm
  • the shoulder radius R was 15 mm.
  • the tension test was implemented based on JISZ2241, and the tensile strength (MPa) and elongation (%) were evaluated as follows.
  • the tensile strength was the maximum test force Fm that the test piece withstood during the test until it showed a discontinuous yield in the test.
  • the elongation is a value representing the permanent elongation of the test piece after being tested until it breaks as a percentage of the original score distance.
  • -Evaluation of tensile strength was made into (circle) ... 300MPa or more, (triangle
  • ⁇ Dezincification corrosion test method> A sample cut into a 10 mm square cube from a sample cast in a ⁇ 28 mm ⁇ 200 mm mold was used as a test piece, and the test was performed in accordance with ISO 6509. That is, the periphery of the test piece was covered with an epoxy resin having a thickness of 15 mm or more, and only one surface of the test piece was exposed from the resin. The exposed surface 100 mm 2 was polished with wet polishing paper, finished with 1200 polishing paper, and washed with ethanol immediately before the test. The sample embedded in the epoxy resin and exposed only on one side was immersed in 250 mL of a 12.7 g / L cupric chloride aqueous solution at 75 ⁇ 5 ° C.
  • the dezincing depth of the cross section immediately (excluding the corrosion depth A of the entire surface in FIG. B depth ( ⁇ m) was measured using an optical microscope. Specifically, the sample 10 mm is divided into 5 fields of view, and the dezincification depth for each field of view is measured at the minimum point and the maximum point, and the average value of 10 points in total is the dezincification corrosion average depth. Of the 10 points, the depth of the deepest point was evaluated as the maximum dezincification corrosion depth as follows. Any of those results that were not x were considered acceptable. -Dezincification corrosion average depth: ⁇ : Less than 200 ⁇ m, x: 200 ⁇ m or more.
  • Table 1 lists comparative examples and examples in which the contents of Al, Sn, and Si were set below the detection limit and the amounts of Ni, Bi, P, Zn, and Cu were prepared.
  • Comparative Examples 1 to 3 have a Ni content below the detection limit.
  • Comparative Example 1 satisfies Equation 1, it is considered that the tensile strength is insufficient because Ni is not present.
  • Comparative Examples 2 and 3 Zn is excessively deviating from the allowable range of Zn in the state where Ni is not present even though Equation 2 is satisfied. It seems that ease has been demonstrated as it is. That is, Comparative Examples 1 to 3 indicate that it is difficult to balance the alloy performance in the situation where Ni is not present.
  • Comparative Examples 4 to 9 Ni is gradually increased. Of these, Comparative Examples 4, 5, and 8 do not satisfy Formula 1, and the evaluation of the tensile strength is x. In Comparative Example 8, the evaluation is also reduced to ⁇ because the Zn is too little. . On the other hand, in Comparative Examples 6, 7, and 9 that do not satisfy Formula 2, the evaluation of dezincification corrosion is x. On the contrary, in Comparative Example 10, Ni was excessive, and all of the formulas 1 to 3 were satisfied. However, a slight problem was caused in castability, and the tensile strength was reduced due to the formation of shrinkage cavities.
  • Examples 1 to 10 partially include a ⁇ evaluation. Of these, Examples 1, 3, 6, 9, and 10 that satisfy Expression 2 but do not satisfy Expression 3 have an evaluation of the maximum dezincing depth of ⁇ , and Expression 3 is sufficient to suppress dezincing corrosion sufficiently. It was shown that it is more desirable to satisfy the conditions. On the other hand, Examples 2, 4, 5, 7, and 8 satisfy Formula 1, but the content of only Zn itself is slightly less than 33% by mass, so that there is a slight problem in tensile strength, and ⁇ . . Further, in Examples 8 to 10, since the amount of Ni is slightly high and exceeds 4.5% by mass and close to 5% by mass, the gas absorption is increased due to the influence of Ni that is a solid solution of Ni in Cu. It is thought that a gas defect or shrinkage nest has occurred in the part. In Examples 11 to 25, data obtained as a result of good results are arranged in order of Ni content.
  • the left side of the trapezoid is a line of Formula 1
  • the vertical broken line is a line of 33% by mass of Zn that is distinguished from Examples 2, 4, 5, 7, and 8, and the broken line on the right side is a line of Formula 3.
  • the solid line on the right side is the line of Equation 2.
  • the upper base is a line with 5.5% by mass of Ni
  • the lower base is a line with 0.3% by mass of Ni
  • the upper horizontal broken line is a line with 4.5% by mass of Ni.
  • Examples 11 to 25 all of which were evaluated as “good”, are located in the central region surrounded by the broken line, and Examples 1 to 10 partially having an evaluation of ⁇ . Is located in the area surrounded by the solid line outside. Further, Comparative Examples 1 to 3 containing no Ni are evaluated as x regardless of the inequality line.
  • Table 2 shows combinations of Zn and Ni in which the contents of one are made almost the same and the contents of the other are changed.
  • Comparative Example 1 and Example 2 are combinations in which Zn is arranged around 33% by mass and the presence or absence of Ni is changed. In Example 2, it can be seen that the tensile strength is greatly improved by the addition of Ni.
  • Comparative Example 3 and Example 12 are combinations in which Zn is aligned around 37 mass% and the presence or absence of Ni is changed. In Comparative Example 3, it is shown that dezincification corrosion occurs when Zn increases, but in Example 12 where Ni is added, it is shown that it is completely suppressed.
  • Comparative Example 6 and Examples 3, 20, and 24 are combinations in which the amount of Ni is changed by aligning at about 39% by mass with more Zn.
  • Example 3 that satisfies Equation 2
  • Example 20 and 24 that satisfy Equation 3, it is shown that this is further improved.
  • Examples 5, 18, 20, 6 and Comparative Example 9 are combinations in which the amount of Zn is changed by aligning Ni around 1.5% by mass.
  • Example 5 shows that when Zn is less than 33% by mass and there is a sufficient amount of Ni, the tensile strength remains somewhat uneasy, and in Examples 18 and 20 where Zn is sufficient, Has been improved.
  • Example 6 which does not satisfy Formula 3 because Zn increases too much, there is a sign of a problem in the maximum depth of dezincification corrosion, and in Comparative Example 9 where Zn increases so as not to satisfy Formula 2, the dezincification depth is maximum. Both averages became a problem.
  • the range in which the physical properties are balanced by the addition of Ni is shown.
  • Example 30 the elongation fluctuated in a complicated manner with respect to the change of P, and in Table 3, the maximum was found in Example 20, but when P increased further, the elongation turned to a decrease, and P was 0.450 mass. % Of Example 30 decreased to the extent that the evaluation was ⁇ .
  • Comparative Examples 12 and 13 were prepared in which the content of P was increased to 0.5% by mass or more while the content other than P was adjusted to a value close to this. These are shown in Table 4 in order of P content.
  • Comparative Example 12 in which P exceeded 0.5 mass%, both tensile strength and elongation were significantly deteriorated, and in Comparative Example 13 in which P was close to 1.0 mass%, the dezincification corrosion was remarkably deteriorated, and castability was improved. Also caused problems.
  • Example 33 where the Bi content was close to 4.0% by mass, the dezincification corrosion resistance tended to improve as Bi increased, but in Example 34 where Bi exceeded 4.0% by mass, The dezincification corrosion property turned worse, and in Comparative Example 15 in which Bi was further increased, not only the dezincification corrosion resistance but also the mechanical properties were remarkably deteriorated.
  • Example 35, Example 36, and Comparative Example 16 were prepared by increasing the amount of Al that was less than the detection limit in Example 18 while adjusting the content to a value close to this based on the value of Example 18. Prepared. These are shown in Table 6 in order of the Al content. As the Al content increased, the tensile strength improved significantly. On the other hand, the dezincification corrosion resistance deteriorates as the Al increase increases, and the elongation also decreases. When Al exceeds 1.0 mass%, the dezincification corrosion exceeds the allowable limit.
  • Example 37 and Comparative Example 17 were prepared in which the amount of Sn that was less than the detection limit in Example 18 was increased. These are shown in Table 7 in order of Sn content.
  • Sn is contained, the dezincification corrosion resistance is remarkably deteriorated, and in Example 37 of 0.29% by mass, the dezincing depth is already the maximum, the influence of both the average is large, and the average is in the range of ⁇ , The maximum was rated ⁇ .
  • Comparative Example 17 since the value of dezincification corrosion was remarkably bad, the mechanical properties were not measured.
  • Example 38 and Comparative Example 18 in which the amount of Si that was less than the detection limit in Example 18 was increased were prepared. These are shown in Table 8 in order of Si content.
  • the elongation decreased with the increase of Si, and when it exceeded 0.5 mass%, the evaluation of elongation was x.
  • the anti-dezincing corrosion resistance once deteriorated in Example 38 when Si was added but has turned to improvement in Comparative Example 18 in which more Si is added, and it is difficult to manage the physical properties that change depending on the amount of Si added. It was shown that. For this reason, it is considered that Si should be less than the detection limit.
  • Example 39 to 42 and Comparative Example 19 were prepared in which the amount of B that was less than the detection limit in Example 18 was increased. . These are shown in Table 9 in order of content of B.
  • Example 41 the tensile strength and dezincification resistance improved with the increase of B.
  • Example 42 where B is 0.105% by mass, castability is slightly deteriorated due to an increase in intermetallic compounds due to B, shrinkage cavities, etc., and in dezincification corrosion, B is somewhat less than the detection limit. Declined.
  • Comparative Example 19 in which B is 0.201% by mass, the machinability is remarkably lowered by the intermetallic compound, and a large amount of shrinkage nest is generated, so that the castability deteriorates to a state where it is difficult to apply as a brass member product for water supply. Furthermore, the maximum dezincification corrosion depth was deteriorated by 2.5 times or more compared with Example 18.
  • FIG. 4 shows a cross-sectional enlarged photograph of 100 times that of the sample of Comparative Example 9 in which zinc is 41.2% by mass and does not satisfy Formulas 2 and 3.
  • the maximum dezincification corrosion depth was 313.3 ⁇ m
  • the dezincification corrosion average depth was 253.4 ⁇ m
  • x is difficult to confirm in black and white, the part discolored from the vicinity of the surface causes dezincing corrosion as a whole.
  • FIG. 5 shows a 200-fold enlarged photograph of the sample of Example 22 in which the overall evaluation is ⁇ . It is a double scale of FIG. As a result of the measurement, the maximum dezincification corrosion depth was 122.3 ⁇ m, and the average dezincification corrosion depth was 41.1 ⁇ m. As can be seen from black and white, the vicinity of the surface is not discolored and it can be seen that there is almost no phase change.
  • FIG. 6 shows a 200-times enlarged photograph of the sample of Comparative Example 11 that does not contain P. It is the same scale as FIG.
  • the maximum dezincification corrosion depth was 293.9 ⁇ m
  • the average dezincification corrosion depth was 206.5 ⁇ m.
  • FIG. 7 shows a cross-sectional enlarged photograph of 200 times of the sample of Comparative Example 14 that does not contain Bi. It is the same scale as FIG.
  • the maximum dezincification corrosion depth was 442.6 ⁇ m, and the average dezincification corrosion depth was 334.8 ⁇ m.
  • the part where the phase change has occurred due to discoloration has reached a depth of around 200 ⁇ m, and the maximum depth of dezincification corrosion has reached even deeper than the discoloration range. It was.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Exhaust Silencers (AREA)

Abstract

L'objectif de la présente invention est la production d'un alliage de laiton pour des composants de distribution d'eau du robinet, qui peut être aisément produit et dans lequel le nombre de composants principaux, dont la teneur de chacun d'entre eux est contrôlée, est réduit. Un alliage de laiton qui contient de 0,3 à 5,5 % en masse inclus de Ni, 0,01 à 0,5 % en masse inclus de P et de 0,1 à 5,0 % en masse inclus de Bi, et contient en outre Zn, les teneurs (en % en masse) de Zn et Ni satisfaisant aux formules (1) et (2) et le reste est constitué de cuivre et d'éléments traces. (1) Zn+2,2×Ni ≥ 32,5 (2) Zn-1,3×Ni ≤ 38,6
PCT/JP2013/059593 2013-03-29 2013-03-29 Alliage de laiton pour composants de distribution d'eau du robinet Ceased WO2014155692A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2013536344A JP5416323B1 (ja) 2013-03-29 2013-03-29 水道部材用黄銅合金
PCT/JP2013/059593 WO2014155692A1 (fr) 2013-03-29 2013-03-29 Alliage de laiton pour composants de distribution d'eau du robinet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2013/059593 WO2014155692A1 (fr) 2013-03-29 2013-03-29 Alliage de laiton pour composants de distribution d'eau du robinet

Publications (1)

Publication Number Publication Date
WO2014155692A1 true WO2014155692A1 (fr) 2014-10-02

Family

ID=50202812

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2013/059593 Ceased WO2014155692A1 (fr) 2013-03-29 2013-03-29 Alliage de laiton pour composants de distribution d'eau du robinet

Country Status (2)

Country Link
JP (1) JP5416323B1 (fr)
WO (1) WO2014155692A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05311295A (ja) * 1992-05-07 1993-11-22 Dowa Mining Co Ltd 熱交換器用銅基合金およびその製造法
JPH06200340A (ja) * 1992-09-01 1994-07-19 American Teleph & Telegr Co <Att> 機械加工可能な無鉛鍛造銅含有合金
JP2000239765A (ja) * 1999-02-18 2000-09-05 Joetsu Material Kk 金型鋳造用若しくは砂型鋳造用無鉛耐食性黄銅合金又は金型鋳物若しくは砂型鋳物並びに連続鋳造用無鉛耐食性黄銅合金又は連続鋳造鋳物
JP2005290475A (ja) * 2004-03-31 2005-10-20 Dowa Mining Co Ltd 黄銅およびその製造方法ならびにこれを用いた部品
WO2009048008A1 (fr) * 2007-10-10 2009-04-16 Toto Ltd. Laiton à coupe rapide, exempt de plomb ayant une excellente aptitude à la coulée

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05311295A (ja) * 1992-05-07 1993-11-22 Dowa Mining Co Ltd 熱交換器用銅基合金およびその製造法
JPH06200340A (ja) * 1992-09-01 1994-07-19 American Teleph & Telegr Co <Att> 機械加工可能な無鉛鍛造銅含有合金
JP2000239765A (ja) * 1999-02-18 2000-09-05 Joetsu Material Kk 金型鋳造用若しくは砂型鋳造用無鉛耐食性黄銅合金又は金型鋳物若しくは砂型鋳物並びに連続鋳造用無鉛耐食性黄銅合金又は連続鋳造鋳物
JP2005290475A (ja) * 2004-03-31 2005-10-20 Dowa Mining Co Ltd 黄銅およびその製造方法ならびにこれを用いた部品
WO2009048008A1 (fr) * 2007-10-10 2009-04-16 Toto Ltd. Laiton à coupe rapide, exempt de plomb ayant une excellente aptitude à la coulée

Also Published As

Publication number Publication date
JP5416323B1 (ja) 2014-02-12
JPWO2014155692A1 (ja) 2017-02-16

Similar Documents

Publication Publication Date Title
KR102062933B1 (ko) 수도 부재용 황동 합금
US9963764B2 (en) Lead-free free-machining brass having improved castability
US10337085B2 (en) Die casting aluminum alloy and production method thereof, and communications product
JP5335558B2 (ja) 機械的特性に優れた鋳物用無鉛銅合金
CA3142297C (fr) Piece coulee en alliage de cuivre pour decolletage, et procede de production de piece coulee en alliage de cuivre pour decolletage
JP5591661B2 (ja) 耐脱亜鉛腐食性に優れた金型鋳造用銅基合金
US11028465B2 (en) Low-cost lead-free dezincification-resistant brass alloy for casting
JP2010242184A (ja) 鋳造性及び耐食性に優れた無鉛快削性黄銅
WO2016047175A1 (fr) Feuille d&#39;alliage de cuivre et procede de production de celle-ci
CN101407872A (zh) 极具铸造性的无铅易切削加工性黄铜
JP5416323B1 (ja) 水道部材用黄銅合金
US9963765B2 (en) Copper alloy for use in a member for use in water works
JP6692317B2 (ja) 高耐食性鉛レス黄銅合金
JP2011179107A (ja) 押出性及び犠牲陽極特性に優れたコネクタ用アルミニウム合金押出材
JP5879464B1 (ja) 銅合金板及び銅合金板の製造方法
JP6482530B2 (ja) 水道部材用低鉛黄銅合金
US20110142715A1 (en) Brass alloy
WO2006137557A1 (fr) Element en alliage de cuivre utilise pour l&#39;alimentation en eau
JP2011038130A (ja) 切削性および耐高温脆性に優れたアルミニウム合金
JP2003147460A (ja) 被削性に優れた鋳物用無鉛銅合金
JP4455507B2 (ja) 飲料水用のバルブ
US20150104347A1 (en) Low Shrinkage Corrosion-Resistant Brass Alloy

Legal Events

Date Code Title Description
ENP Entry into the national phase

Ref document number: 2013536344

Country of ref document: JP

Kind code of ref document: A

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 13879883

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 13879883

Country of ref document: EP

Kind code of ref document: A1