CN104762523A - Preparation method of copper alloy valve pipe fitting - Google Patents
Preparation method of copper alloy valve pipe fitting Download PDFInfo
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- CN104762523A CN104762523A CN201510199494.5A CN201510199494A CN104762523A CN 104762523 A CN104762523 A CN 104762523A CN 201510199494 A CN201510199494 A CN 201510199494A CN 104762523 A CN104762523 A CN 104762523A
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- Prior art keywords
- pipe fitting
- valve pipe
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- incubated
- rate
- 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.)
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- 229910000881 Cu alloy Inorganic materials 0.000 title claims abstract description 13
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 239000010949 copper Substances 0.000 claims abstract description 26
- 238000000034 method Methods 0.000 claims abstract description 20
- 229910052755 nonmetal Inorganic materials 0.000 claims abstract description 13
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 8
- 239000000956 alloy Substances 0.000 claims abstract description 8
- 239000000126 substance Substances 0.000 claims abstract description 8
- 229910052802 copper Inorganic materials 0.000 claims description 25
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 19
- 238000005480 shot peening Methods 0.000 claims description 18
- 238000001816 cooling Methods 0.000 claims description 13
- 229910000838 Al alloy Inorganic materials 0.000 claims description 12
- 238000005275 alloying Methods 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 12
- 239000011701 zinc Substances 0.000 claims description 12
- 238000003723 Smelting Methods 0.000 claims description 7
- 238000009413 insulation Methods 0.000 claims description 7
- 229910052684 Cerium Inorganic materials 0.000 claims description 6
- 229910001297 Zn alloy Inorganic materials 0.000 claims description 6
- 239000004411 aluminium Substances 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052804 chromium Inorganic materials 0.000 claims description 6
- 229910017052 cobalt Inorganic materials 0.000 claims description 6
- 239000010941 cobalt Substances 0.000 claims description 6
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 6
- 229910052748 manganese Inorganic materials 0.000 claims description 6
- 229910052750 molybdenum Inorganic materials 0.000 claims description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 6
- QELJHCBNGDEXLD-UHFFFAOYSA-N nickel zinc Chemical compound [Ni].[Zn] QELJHCBNGDEXLD-UHFFFAOYSA-N 0.000 claims description 6
- 229910052758 niobium Inorganic materials 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 238000010791 quenching Methods 0.000 claims description 6
- 238000005507 spraying Methods 0.000 claims description 6
- 238000007669 thermal treatment Methods 0.000 claims description 6
- 229910052718 tin Inorganic materials 0.000 claims description 6
- 229910052720 vanadium Inorganic materials 0.000 claims description 6
- 229910052725 zinc Inorganic materials 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000005495 investment casting Methods 0.000 abstract description 2
- 238000005422 blasting Methods 0.000 abstract 1
- 239000012535 impurity Substances 0.000 abstract 1
- 238000005266 casting Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000000137 annealing Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Valve Housings (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Contacts (AREA)
- Prostheses (AREA)
- Coating By Spraying Or Casting (AREA)
Abstract
The invention discloses a preparation method of a copper alloy valve pipe fitting. The preparation method is characterized in that the alloy comprises the following chemical components in percentage by weight: 8.6% of Ni, 1.6% of Co, 5.6% of Zn, 0.056% of Cr, 0.36% of Sb, 0.036% of V, 0.036% of Fe, 0.016% of Nb, 0.016% of Mn, 0.056% of Ce, 0.036% of Mo and the balance of Cu and inevitable nonmetal impurities. Due to the adoption of a precision casting and shot blasting technology, the compactness of the valve pipe fitting is improved, the process is simplified, the production efficiency is increased, and the production cost is reduced.
Description
Technical field
The present invention relates to a kind of method preparing copper alloy valve pipe fitting, belong to copper base alloy and manufacture field.
Background technology
Corronel is owing to having good mechanical property, wear resistance, solidity to corrosion etc., thus obtain in valve pipe fitting manufacture field and use widely, but in view of the hot workability that corronel is poor, the forming mode of corronel bar is mainly cast, but it is many to there is subsurface defect in the corronel of casting, compactness is poor, and life-time service easily occurs the problems such as seepage, and this makes the reliability, yield rate, work-ing life, material use efficiency etc. of casting corronel all be restricted; And prior art prepare corronel need through press working repeatedly, homogenizing annealing, and its complete processing is complicated, causes existing corronel cost higher.
Summary of the invention
The object of this invention is to provide a kind ofly solve that prior art casting corronel valve pipe fitting subsurface defect is many, the poor problem of compactness, Simplified flowsheet, production cost of enhancing productivity, reduce the production technique of making corronel valve pipe fitting.
The invention discloses a kind of method that lost wax process prepares corronel valve pipe fitting for achieving the above object, it is characterized in that, the weight percent of alloy composition is: Ni 8.6%, Co 1.6%, Zn 5.6%, Cr 0.056%, Sb 0.36%, V 0.036%, Fe 0.036%, Nb 0.016%, Mn 0.016%, Ce 0.056%, Mo 0.036%, surplus is copper and inevitable nonmetal inclusion
The preparation method of institute's corronel valve pipe fitting, comprise the following steps: require to prepare burden according to above-mentioned corronel chemical composition, first add fine copper ingot, after the fusing of fine copper ingot, add nickel zinc alloy, then add cobalt, finally add containing other alloying elements, smelting temperature is 1380 DEG C, cast: pouring temperature is 1360 DEG C, after carry out the demoulding, the corronel valve pipe fitting obtained is incubated 120 minutes at 860 DEG C, then carries out quench treatment in this temperature; Rate of cooling is for being greater than 30 DEG C/sec; Afterwards copper alloy valve pipe fitting is heated to 360 DEG C of insulations 12 hours; Drop to 310 DEG C with 2 DEG C/min of rate of temperature fall afterwards, be incubated 8 hours, after drop to 270 DEG C with 1 DEG C/min of rate of temperature fall, be incubated 4 hours, after drop to 210 DEG C with 1 DEG C/min of rate of temperature fall again, be incubated 5 hours, air cooling to room temperature,
The loading stage after thermal treatment, described valve pipe fitting being placed on blaster carries out shot peening; Loading stage at the uniform velocity rotates with the rotating speed of 6rad/min; The jet angle of shot-peening constantly changes between 40-70 °; Spraying pressure is 0.2MPa; The particle diameter of aluminium alloy bullet is 0.1mm; The shot-peening time is 90 minutes, obtains final valve pipe fitting, and described aluminium alloy bullet alloying element consists of: Zn 15.6%, Cu 5.6%, Ti 4.6%, Mg 3.6%, Sn 0.016%, Ti 6.6%, and surplus is aluminium and inevitable nonmetal inclusion.
A kind of lost wax process prepares the method for corronel valve pipe fitting, it is characterized in that, the weight percent of alloy composition is: Ni 8.8%, Co 1.8%, Zn 5.8%, Cr 0.058%, Sb 0.38%, V 0.038%, Fe 0.038%, Nb 0.018%, Mn 0.018%, Ce 0.058%, Mo 0.038%, surplus is copper and inevitable nonmetal inclusion
The preparation method of institute's corronel valve pipe fitting, comprise the following steps: require to prepare burden according to above-mentioned corronel chemical composition, first add fine copper ingot, after the fusing of fine copper ingot, add nickel zinc alloy, then add cobalt, finally add containing other alloying elements, smelting temperature is 1380 DEG C, cast: pouring temperature is 1360 DEG C, after carry out the demoulding, the corronel valve pipe fitting obtained is incubated 120 minutes at 860 DEG C, then carries out quench treatment in this temperature; Rate of cooling is for being greater than 30 DEG C/sec; Afterwards copper alloy valve pipe fitting is heated to 360 DEG C of insulations 12 hours; Drop to 310 DEG C with 2 DEG C/min of rate of temperature fall afterwards, be incubated 8 hours, after drop to 270 DEG C with 1 DEG C/min of rate of temperature fall, be incubated 4 hours, after drop to 210 DEG C with 1 DEG C/min of rate of temperature fall again, be incubated 5 hours, air cooling to room temperature,
The loading stage after thermal treatment, described valve pipe fitting being placed on blaster carries out shot peening; Loading stage at the uniform velocity rotates with the rotating speed of 6rad/min; The jet angle of shot-peening constantly changes between 40-70 °; Spraying pressure is 0.2MPa; The particle diameter of aluminium alloy bullet is 0.1mm; The shot-peening time is 90 minutes, obtains final valve pipe fitting, and described aluminium alloy bullet alloying element consists of: Zn 15.8%, Cu 5.8%, Ti 4.8%, Mg 3.8%, Sn 0.018%, Ti 6.8%, and surplus is aluminium and inevitable nonmetal inclusion.
The invention has the beneficial effects as follows:
Precision casting corronel valve pipe fitting of the present invention requires mould and the technique of design according to finished product, refinement crystal grain, decrease corronel subsurface defect, improve the ductility of corronel, improve the compactness of corronel valve pipe fitting, simplify technique, improve production efficiency, reduce production cost.
Embodiment
Embodiment 1:
A kind of lost wax process is provided to prepare the method for corronel valve pipe fitting, it is characterized in that, the weight percent of alloy composition is: Ni 8.6%, Co 1.6%, Zn 5.6%, Cr 0.056%, Sb 0.36%, V 0.036%, Fe 0.036%, Nb 0.016%, Mn 0.016%, Ce 0.056%, Mo 0.036%, surplus is copper and inevitable nonmetal inclusion
The preparation method of institute's corronel valve pipe fitting, comprise the following steps: require to prepare burden according to above-mentioned corronel chemical composition, first add fine copper ingot, after the fusing of fine copper ingot, add nickel zinc alloy, then add cobalt, finally add containing other alloying elements, smelting temperature is 1380 DEG C, cast: pouring temperature is 1360 DEG C, after carry out the demoulding, the corronel valve pipe fitting obtained is incubated 120 minutes at 860 DEG C, then carries out quench treatment in this temperature; Rate of cooling is for being greater than 30 DEG C/sec; Afterwards copper alloy valve pipe fitting is heated to 360 DEG C of insulations 12 hours; Drop to 310 DEG C with 2 DEG C/min of rate of temperature fall afterwards, be incubated 8 hours, after drop to 270 DEG C with 1 DEG C/min of rate of temperature fall, be incubated 4 hours, after drop to 210 DEG C with 1 DEG C/min of rate of temperature fall again, be incubated 5 hours, air cooling to room temperature,
The loading stage after thermal treatment, described valve pipe fitting being placed on blaster carries out shot peening; Loading stage at the uniform velocity rotates with the rotating speed of 6rad/min; The jet angle of shot-peening constantly changes between 40-70 °; Spraying pressure is 0.2MPa; The particle diameter of aluminium alloy bullet is 0.1mm; The shot-peening time is 90 minutes, obtains final valve pipe fitting, and described aluminium alloy bullet alloying element consists of: Zn 15.6%, Cu 5.6%, Ti 4.6%, Mg 3.6%, Sn 0.016%, Ti 6.6%, and surplus is aluminium and inevitable nonmetal inclusion.
Embodiment 2:
A kind of lost wax process is provided to prepare the method for corronel valve pipe fitting, it is characterized in that, the weight percent of alloy composition is: Ni 8.8%, Co 1.8%, Zn 5.8%, Cr 0.058%, Sb 0.38%, V 0.038%, Fe 0.038%, Nb 0.018%, Mn 0.018%, Ce 0.058%, Mo 0.038%, surplus is copper and inevitable nonmetal inclusion
The preparation method of institute's corronel valve pipe fitting, comprise the following steps: require to prepare burden according to above-mentioned corronel chemical composition, first add fine copper ingot, after the fusing of fine copper ingot, add nickel zinc alloy, then add cobalt, finally add containing other alloying elements, smelting temperature is 1380 DEG C, cast: pouring temperature is 1360 DEG C, after carry out the demoulding, the corronel valve pipe fitting obtained is incubated 120 minutes at 860 DEG C, then carries out quench treatment in this temperature; Rate of cooling is for being greater than 30 DEG C/sec; Afterwards copper alloy valve pipe fitting is heated to 360 DEG C of insulations 12 hours; Drop to 310 DEG C with 2 DEG C/min of rate of temperature fall afterwards, be incubated 8 hours, after drop to 270 DEG C with 1 DEG C/min of rate of temperature fall, be incubated 4 hours, after drop to 210 DEG C with 1 DEG C/min of rate of temperature fall again, be incubated 5 hours, air cooling to room temperature,
The loading stage after thermal treatment, described valve pipe fitting being placed on blaster carries out shot peening; Loading stage at the uniform velocity rotates with the rotating speed of 6rad/min; The jet angle of shot-peening constantly changes between 40-70 °; Spraying pressure is 0.2MPa; The particle diameter of aluminium alloy bullet is 0.1mm; The shot-peening time is 90 minutes, obtains final valve pipe fitting, and described aluminium alloy bullet alloying element consists of: Zn 15.8%, Cu 5.8%, Ti 4.8%, Mg 3.8%, Sn 0.018%, Ti 6.8%, and surplus is aluminium and inevitable nonmetal inclusion.
Claims (4)
1. a lost wax process prepares the method for corronel valve pipe fitting, it is characterized in that, the weight percent of alloy composition is: Ni 8.6%, Co 1.6%, Zn 5.6%, Cr 0.056%, Sb 0.36%, V 0.036%, Fe 0.036%, Nb 0.016%, Mn 0.016%, Ce 0.056%, Mo 0.036%, surplus is copper and inevitable nonmetal inclusion
The preparation method of institute's corronel valve pipe fitting, comprise the following steps: require to prepare burden according to above-mentioned corronel chemical composition, first add fine copper ingot, after the fusing of fine copper ingot, add nickel zinc alloy, then add cobalt, finally add containing other alloying elements, smelting temperature is 1380 DEG C, cast: pouring temperature is 1360 DEG C, after carry out the demoulding, the corronel valve pipe fitting obtained is incubated 120 minutes at 860 DEG C, then carries out quench treatment in this temperature; Rate of cooling is for being greater than 30 DEG C/sec; Afterwards copper alloy valve pipe fitting is heated to 360 DEG C of insulations 12 hours; Drop to 310 DEG C with 2 DEG C/min of rate of temperature fall afterwards, be incubated 8 hours, after drop to 270 DEG C with 1 DEG C/min of rate of temperature fall, be incubated 4 hours, after drop to 210 DEG C with 1 DEG C/min of rate of temperature fall again, be incubated 5 hours, air cooling to room temperature,
The loading stage after thermal treatment, described valve pipe fitting being placed on blaster carries out shot peening; Loading stage at the uniform velocity rotates with the rotating speed of 6rad/min; The jet angle of shot-peening constantly changes between 40-70 °; Spraying pressure is 0.2MPa; The particle diameter of aluminium alloy bullet is 0.1mm; The shot-peening time is 90 minutes, obtains final valve pipe fitting, and described aluminium alloy bullet alloying element consists of: Zn 15.6%, Cu 5.6%, Ti 4.6%, Mg 3.6%, Sn 0.016%, Ti 6.6%, and surplus is aluminium and inevitable nonmetal inclusion.
2. a lost wax process prepares the method for corronel valve pipe fitting, it is characterized in that, the weight percent of alloy composition is: Ni 8.8%, Co 1.8%, Zn 5.8%, Cr 0.058%, Sb 0.38%, V 0.038%, Fe 0.038%, Nb 0.018%, Mn 0.018%, Ce 0.058%, Mo 0.038%, surplus is copper and inevitable nonmetal inclusion
The preparation method of institute's corronel valve pipe fitting, comprise the following steps: require to prepare burden according to above-mentioned corronel chemical composition, first add fine copper ingot, after the fusing of fine copper ingot, add nickel zinc alloy, then add cobalt, finally add containing other alloying elements, smelting temperature is 1380 DEG C, cast: pouring temperature is 1360 DEG C, after carry out the demoulding, the corronel valve pipe fitting obtained is incubated 120 minutes at 860 DEG C, then carries out quench treatment in this temperature; Rate of cooling is for being greater than 30 DEG C/sec; Afterwards copper alloy valve pipe fitting is heated to 360 DEG C of insulations 12 hours; Drop to 310 DEG C with 2 DEG C/min of rate of temperature fall afterwards, be incubated 8 hours, after drop to 270 DEG C with 1 DEG C/min of rate of temperature fall, be incubated 4 hours, after drop to 210 DEG C with 1 DEG C/min of rate of temperature fall again, be incubated 5 hours, air cooling to room temperature,
The loading stage after thermal treatment, described valve pipe fitting being placed on blaster carries out shot peening; Loading stage at the uniform velocity rotates with the rotating speed of 6rad/min; The jet angle of shot-peening constantly changes between 40-70 °; Spraying pressure is 0.2MPa; The particle diameter of aluminium alloy bullet is 0.1mm; The shot-peening time is 90 minutes, obtains final valve pipe fitting, and described aluminium alloy bullet alloying element consists of: Zn 15.8%, Cu 5.8%, Ti 4.8%, Mg 3.8%, Sn 0.018%, Ti 6.8%, and surplus is aluminium and inevitable nonmetal inclusion.
3. prepare the method for copper alloy valve pipe fitting as claimed in claim 1, smelting temperature is 1385 DEG C, and pouring temperature is 1365 DEG C.
4. prepare the method for copper alloy valve pipe fitting as claimed in claim 3, chemical component weight per-cent is: copper alloy valve pipe fitting was 370 DEG C of insulations 13 hours; After drop to 320 DEG C with 2 DEG C/min of rate of temperature fall, be incubated 8 hours, after drop to 275 DEG C with 1 DEG C/min of rate of temperature fall, be incubated 5 hours, after drop to 220 DEG C with 1 DEG C/min of rate of temperature fall again, be incubated 5.5 hours, air cooling is to room temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510199494.5A CN104762523B (en) | 2013-11-04 | 2013-11-04 | A kind of method preparing copper alloy valve pipe fitting |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510199494.5A CN104762523B (en) | 2013-11-04 | 2013-11-04 | A kind of method preparing copper alloy valve pipe fitting |
| CN201310536911.1A CN103540793B (en) | 2013-11-04 | 2013-11-04 | A kind of method preparing copper alloy valve pipe fitting |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310536911.1A Division CN103540793B (en) | 2013-11-04 | 2013-11-04 | A kind of method preparing copper alloy valve pipe fitting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104762523A true CN104762523A (en) | 2015-07-08 |
| CN104762523B CN104762523B (en) | 2016-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310536911.1A Expired - Fee Related CN103540793B (en) | 2013-11-04 | 2013-11-04 | A kind of method preparing copper alloy valve pipe fitting |
| CN201510199494.5A Active CN104762523B (en) | 2013-11-04 | 2013-11-04 | A kind of method preparing copper alloy valve pipe fitting |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201310536911.1A Expired - Fee Related CN103540793B (en) | 2013-11-04 | 2013-11-04 | A kind of method preparing copper alloy valve pipe fitting |
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| Country | Link |
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| CN (2) | CN103540793B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104032184A (en) * | 2014-05-12 | 2014-09-10 | 蚌埠市宏威滤清器有限公司 | Free-cutting copper alloy material and preparation method thereof |
| CN104032162A (en) * | 2014-05-12 | 2014-09-10 | 蚌埠市宏威滤清器有限公司 | Nickel-aluminum bronze alloy material and preparation method thereof |
| CN107699733A (en) * | 2017-11-20 | 2018-02-16 | 任超 | One Albatra metal and preparation method thereof |
| CN109990137A (en) * | 2017-12-30 | 2019-07-09 | 宜兴市恒邦环保有限公司 | A kind of plumbing spool processing technology |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4954187A (en) * | 1987-10-22 | 1990-09-04 | Diehl Gmbh & Co. | Precipitates copper-zinc alloy with nickel silicide |
| JP2007297707A (en) * | 2006-04-28 | 2007-11-15 | Wieland Werke Ag | Multicomponent copper alloy and its use |
| CN101892401A (en) * | 2009-05-19 | 2010-11-24 | 天津市三条石有色金属铸造有限公司 | New multicomponent heterogeneous copper alloy for valve plate casting |
| CN102851532A (en) * | 2012-09-10 | 2013-01-02 | 顾建 | Copper alloy used in valves |
| CN102864327A (en) * | 2012-09-10 | 2013-01-09 | 任静儿 | Copper alloy material used for valve |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5321034A (en) * | 1976-08-10 | 1978-02-27 | Kobe Steel Ltd | Flexible tube made of copper alloy and its preparation |
-
2013
- 2013-11-04 CN CN201310536911.1A patent/CN103540793B/en not_active Expired - Fee Related
- 2013-11-04 CN CN201510199494.5A patent/CN104762523B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4954187A (en) * | 1987-10-22 | 1990-09-04 | Diehl Gmbh & Co. | Precipitates copper-zinc alloy with nickel silicide |
| JP2007297707A (en) * | 2006-04-28 | 2007-11-15 | Wieland Werke Ag | Multicomponent copper alloy and its use |
| CN101892401A (en) * | 2009-05-19 | 2010-11-24 | 天津市三条石有色金属铸造有限公司 | New multicomponent heterogeneous copper alloy for valve plate casting |
| CN102851532A (en) * | 2012-09-10 | 2013-01-02 | 顾建 | Copper alloy used in valves |
| CN102864327A (en) * | 2012-09-10 | 2013-01-09 | 任静儿 | Copper alloy material used for valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104762523B (en) | 2016-06-29 |
| CN103540793A (en) | 2014-01-29 |
| CN103540793B (en) | 2015-09-16 |
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Effective date of registration: 20160519 Address after: Peng Jie Zhen Wan Sheng Cun Luqiao District of Taizhou City, Zhejiang province 318050 2 District No. 58 Applicant after: Shi Xiaobin Address before: 100192 Beijing city Changping District East Town Jiayun Park District 3 Building 3 unit 322 room Applicant before: Li Qian |
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Effective date of registration: 20240402 Address after: 311800 Diankou town wangdianfan village, Zhuji City, Shaoxing City, Zhejiang Province Patentee after: Zhuji Qisheng Hardware Pipe Fittings Manufacturing Co.,Ltd. Country or region after: China Address before: 318050 No. 58, 2 District, Wan Sheng village, Peng street, Luqiao District, Taizhou, Zhejiang Patentee before: Shi Xiaobin Country or region before: China |
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