CN106222480A - The high abrasion copper cash of a kind of environmental protection and processing technique thereof - Google Patents
The high abrasion copper cash of a kind of environmental protection and processing technique thereof Download PDFInfo
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- CN106222480A CN106222480A CN201610736526.5A CN201610736526A CN106222480A CN 106222480 A CN106222480 A CN 106222480A CN 201610736526 A CN201610736526 A CN 201610736526A CN 106222480 A CN106222480 A CN 106222480A
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- parts
- copper
- annealing
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- high abrasion
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Classifications
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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
- C22C9/01—Alloys based on copper with aluminium as the next major constituent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/04—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of bars or wire
-
- 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
-
- 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
- C22C9/05—Alloys based on copper with manganese 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
- C22C9/10—Alloys based on copper with silicon as the next major constituent
Abstract
The invention discloses high abrasion copper cash and the processing technique thereof of a kind of environmental protection, the raw material of following weight portion be prepared from: copper 80～95 parts, silicon 4～8 parts, aluminum 5～8 parts, ferrum 2～4 parts, zinc 4～8 parts, nickel 3～6 parts, silver 2～6 parts, stannum 1～4 parts, manganese 2～8 parts, lanthanum 1.1～3.8 parts, molybdenum 3～8 parts, praseodymium 2～6 parts, neodymium 2～7 parts, promethium 1～5 parts.Tradition lead element is replaced with element silicon by the present invention, according to the composition proportion that copper, silicon, aluminum, ferrum, zinc, nickel, silver, stannum, manganese, lanthanum, molybdenum, praseodymium, neodymium, promethium are certain, suitable temperature, the production of alloy bar material is completed, it is possible to replace the tin bronze alloys bar containing lead element completely by the production technology of continuous casting and rolling；Use the production technology of continuous casting and rolling, eliminate the billet in traditional processing technology and process and annealing pressing steps；The present invention not only obtains the alternative existing leadless environment-friendly alloy material containing Redford alloy, greatly reduces production cost.
Description
Technical field
The present invention relates to copper rod manufacture field, be specifically related to high abrasion copper cash and the processing technique thereof of a kind of environmental protection.
Background technology
Existing tin bronze material often adds lead element to realize its easy chip performance, and leaded tin bronze has
Higher wearability and good machinability, fine weldering and good welding performance, mainly for the manufacture of aviation automobile and other industry
Department bears the part of friction and carries out the welding of necessity.But due to the characteristic of lead, when carrying out hot-working, easily produce
Red brittleness, therefore can only carry out cold working, reduces the machinability of alloy bar, and lead has the biggest harm to environment,
Along with significantly improving of environmental consciousness, the bell metal containing lead element can not meet the requirement of domestic and international high-end market.
Summary of the invention
For solving the problems referred to above, the invention provides high abrasion copper cash and the processing technique thereof of a kind of environmental protection.
For achieving the above object, the technical scheme that the present invention takes is:
The high abrasion copper cash of a kind of environmental protection, is prepared from by the raw material of following weight portion:
Copper 80～95 parts, silicon 4～8 parts, aluminum 5～8 parts, ferrum 2～4 parts, zinc 4～8 parts, nickel 3～6 parts, silver 2～6 parts, stannum
1～4 part, manganese 2～8 parts, lanthanum 1.1～3.8 parts, molybdenum 3～8 parts, praseodymium 2～6 parts, neodymium 2～7 parts, promethium 1～5 parts and inevitable
Impurity.
Further, the high abrasion copper cash of a kind of environmental protection, the raw material of following weight portion it is prepared from:
Copper 81～90 parts, silicon 5～7 parts, aluminum 6～7 parts, ferrum 3～4 parts, zinc 5～7 parts, nickel 4～6 parts, silver 3～5 parts, stannum
2～3 parts, manganese 3～7 parts, lanthanum 2～3.5 parts, molybdenum 4～7 parts, praseodymium 3～5 parts, neodymium 3～6 parts, promethium 2～4 parts and inevitably
Impurity.
Further, the high abrasion copper cash of a kind of environmental protection, the raw material of following weight portion it is prepared from:
Copper 88 parts, silicon 5 parts, 6 parts of aluminum, ferrum 3 parts, 6 parts of zinc, 5 parts of nickel, silver 4 parts, 3 parts of stannum, 5 parts of manganese, lanthanum 1.8 parts, molybdenum
6 parts, praseodymium 4 parts, neodymium 5 parts, promethium 3 parts and inevitable impurity.
Further, the processing technique of the high abrasion copper cash of a kind of environmental protection, comprise the steps:
S1: weigh copper 81～90 parts, silicon 5～7 parts, aluminum 6～7 parts, ferrum 3～4 parts, zinc 5～7 parts, nickel 4～6 parts, silver 3
～5 parts, stannum 2～3 parts, manganese 3～7 parts and inevitable impurity join in main frequency furnace；Heating-up temperature is to 1150～1250
After fusing；Adjust temperature to 1250～1450 DEG C, by lanthanum 2～3.5 parts, molybdenum 4～7 parts, praseodymium 3～5 parts, neodymium 3～6 parts, promethium 2～
In 4 parts of addition smelting furnaces, after band is completely melt, on molten metal, covering high-purity flaky graphite powder is to prevent it from aoxidizing, and
It is incubated 1.5～2 hours at temperature 1200 DEG C；
S2: take out sample in electric furnace, uses direct-reading spectrometer sample to be carried out three to five composition detection, to determine its alloy
Composition, within prescribed limit, then carries out components tests；
S3, guide the copper alloy metal liquid obtained to pour into and produce solid copper by the method for continuous casting and rolling in continuous casting and continuous rolling mill and close
Gold bar；
S4, copper rod is made annealing treatment by the copper alloy bar box-annealing furnace of step S3 gained；
S5, will annealing after copper alloy bar carry out pickling after tin plating operation, subsequently heat-treated prepared copper rod finished product, inspection close
Lattice are put in storage.
Further, the continuous casting and rolling speed in described step S3 is 750～2200m/min, annealing voltage be 16～
115V, annealing electric current is 12～45A.
Further, the annealing temperature in described step S4 is 180～350 DEG C, and annealing time is 15～20 points
Clock.
Further, the pickling in described step S5 uses pickle to be tin plating scaling powder, and its ratio is 1: 3.
The method have the advantages that tradition lead element is replaced with element silicon by the present invention, according to copper, silicon, aluminum,
The composition proportion that ferrum, zinc, nickel, silver, stannum, manganese, lanthanum, molybdenum, praseodymium, neodymium, promethium are certain, suitable temperature, by the production of continuous casting and rolling
Technique completes the production of alloy bar material, it is possible to replace the tin bronze alloys bar containing lead element completely；Use continuous casting and rolling
Production technology, eliminates the billet in traditional processing technology and processes and annealing pressing steps；The present invention not only obtains alternative
The existing leadless environment-friendly alloy material containing Redford alloy, and shorten the production cycle, improve production efficiency, greatly reduce
Production cost.
Detailed description of the invention
In order to make objects and advantages of the present invention clearer, below in conjunction with embodiment, the present invention is carried out the most in detail
Explanation.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
The present invention is prepared from by the raw material of following weight portion:
Copper 80～95 parts, silicon 4～8 parts, aluminum 5～8 parts, ferrum 2～4 parts, zinc 4～8 parts, nickel 3～6 parts, silver 2～6 parts, stannum
1～4 part, manganese 2～8 parts, lanthanum 1.1～3.8 parts, molybdenum 3～8 parts, praseodymium 2～6 parts, neodymium 2～7 parts, promethium 1～5 parts and inevitable
Impurity.
The high abrasion copper cash of a kind of environmental protection, is prepared from by the raw material of following weight portion:
Copper 81～90 parts, silicon 5～7 parts, aluminum 6～7 parts, ferrum 3～4 parts, zinc 5～7 parts, nickel 4～6 parts, silver 3～5 parts, stannum
2～3 parts, manganese 3～7 parts, lanthanum 2～3.5 parts, molybdenum 4～7 parts, praseodymium 3～5 parts, neodymium 3～6 parts, promethium 2～4 parts and inevitably
Impurity.
The high abrasion copper cash of a kind of environmental protection, is prepared from by the raw material of following weight portion:
Copper 88 parts, silicon 5 parts, 6 parts of aluminum, ferrum 3 parts, 6 parts of zinc, 5 parts of nickel, silver 4 parts, 3 parts of stannum, 5 parts of manganese, lanthanum 1.8 parts, molybdenum
6 parts, praseodymium 4 parts, neodymium 5 parts, promethium 3 parts and inevitable impurity.
The processing technique of the high abrasion copper cash of a kind of environmental protection, comprises the steps:
S1: weigh copper 81～90 parts, silicon 5～7 parts, aluminum 6～7 parts, ferrum 3～4 parts, zinc 5～7 parts, nickel 4～6 parts, silver 3
～5 parts, stannum 2～3 parts, manganese 3～7 parts and inevitable impurity join in main frequency furnace；Heating-up temperature is to 1150～1250
After fusing；Adjust temperature to 1250～1450 DEG C, by lanthanum 2～3.5 parts, molybdenum 4～7 parts, praseodymium 3～5 parts, neodymium 3～6 parts, promethium 2～
In 4 parts of addition smelting furnaces, after band is completely melt, on molten metal, covering high-purity flaky graphite powder is to prevent it from aoxidizing, and
It is incubated 1.5～2 hours at temperature 1200 DEG C；
S2: take out sample in electric furnace, uses direct-reading spectrometer sample to be carried out three to five composition detection, to determine its alloy
Composition, within prescribed limit, then carries out components tests；
S3, guide the copper alloy metal liquid obtained to pour into and produce solid copper by the method for continuous casting and rolling in continuous casting and continuous rolling mill and close
Gold bar；
S4, copper rod is made annealing treatment by the copper alloy bar box-annealing furnace of step S3 gained；
S5, will annealing after copper alloy bar carry out pickling after tin plating operation, subsequently heat-treated prepared copper rod finished product, inspection close
Lattice are put in storage.
Continuous casting and rolling speed in described step S3 is 750～2200m/min, and annealing voltage is 16～115V, annealing electricity
Stream is 12～45A.
Annealing temperature in described step S4 is 180～350 DEG C, and annealing time is 15～20 minutes.
Pickling in described step S5 uses pickle to be tin plating scaling powder, and its ratio is 1: 3.
Embodiment 1:
S1: weigh copper 88 parts, silicon 5 parts, 6 parts of aluminum, ferrum 3 parts, 6 parts of zinc, 5 parts of nickel, silver 4 parts, 3 parts of stannum, 5 parts of manganese and can not
The impurity avoided joins in main frequency furnace；After heating-up temperature melts to 1150 DEG C；Adjustment temperature is to 1250 DEG C, by lanthanum 1.8
In part, molybdenum 6 parts, praseodymium 4 parts, neodymium 5 parts, 3 parts of addition smelting furnaces of promethium, after band is completely melt, on molten metal, cover high-purity scale
Shape graphite powder is to prevent it from aoxidizing, and is incubated 1.5 hours at temperature 1200 DEG C；
S2: take out sample in electric furnace, uses direct-reading spectrometer sample to be carried out three to five composition detection, to determine its alloy
Composition, within prescribed limit, then carries out components tests；
S3, guide the copper alloy metal liquid obtained to pour into and produce solid copper by the method for continuous casting and rolling in continuous casting and continuous rolling mill and close
Gold bar；
S4, copper rod is made annealing treatment by the copper alloy bar box-annealing furnace of step S3 gained；
S5, will annealing after copper alloy bar carry out pickling after tin plating operation, subsequently heat-treated prepared copper rod finished product, inspection close
Lattice are put in storage.
Continuous casting and rolling speed in described step S3 is 750m/min, and annealing voltage is 16V, and annealing electric current is 12A.
Annealing temperature in described step S4 is 180 DEG C, and annealing time is 15 minutes.
Pickling in described step S5 uses pickle to be tin plating scaling powder, and its ratio is 1: 3.
Embodiment 2:
S1: weigh copper 90 parts, silicon 7 parts, 7 parts of aluminum, ferrum 4 parts, 7 parts of zinc, 6 parts of nickel, silver 5 parts, 3 parts of stannum, 7 parts of manganese and inevitable
Impurity join in main frequency furnace；After heating-up temperature melts to 1250；Adjustment temperature is to 1450 DEG C, by lanthanum 3.5 parts, molybdenum 7
In part, praseodymium 5 parts, neodymium 6 parts, 4 parts of addition smelting furnaces of promethium, after band is completely melt, on molten metal, cover high-purity flaky graphite
Powder is to prevent it from aoxidizing, and is incubated 2 hours at temperature 1200 DEG C；
S2: take out sample in electric furnace, uses direct-reading spectrometer sample to be carried out three to five composition detection, to determine its alloy
Composition, within prescribed limit, then carries out components tests；
S3, guide the copper alloy metal liquid obtained to pour into and produce solid copper by the method for continuous casting and rolling in continuous casting and continuous rolling mill and close
Gold bar；
S4, copper rod is made annealing treatment by the copper alloy bar box-annealing furnace of step S3 gained；
S5, will annealing after copper alloy bar carry out pickling after tin plating operation, subsequently heat-treated prepared copper rod finished product, inspection close
Lattice are put in storage.
Continuous casting and rolling speed in described step S3 is 2200m/min, and annealing voltage is 115V, and annealing electric current is 45A.
Annealing temperature in described step S4 is 350 DEG C, and annealing time is 20 minutes.
Pickling in described step S5 uses pickle to be tin plating scaling powder, and its ratio is 1: 3.
Embodiment 3:
S1: weigh copper 81 parts, silicon 5 parts, 6 parts of aluminum, ferrum 3 parts, 5 parts of zinc, 4 parts of nickel, silver 3 parts, 2 parts of stannum, manganese 3 and can not keep away
The impurity exempted from joins in main frequency furnace；After heating-up temperature melts to 1150 DEG C；Adjustment temperature is to 1250 DEG C, by lanthanum 2 parts, molybdenum
4 parts, praseodymium 3 parts, neodymium 3 parts, in 3 parts of addition smelting furnaces of promethium, after band is completely melt, on molten metal, cover high-purity flaky graphite
Powder is to prevent it from aoxidizing, and is incubated 1.8 hours at temperature 1200 DEG C；
S2: take out sample in electric furnace, uses direct-reading spectrometer sample to be carried out three to five composition detection, to determine its alloy
Composition, within prescribed limit, then carries out components tests；
S3, guide the copper alloy metal liquid obtained to pour into and produce solid copper by the method for continuous casting and rolling in continuous casting and continuous rolling mill and close
Gold bar；
S4, copper rod is made annealing treatment by the copper alloy bar box-annealing furnace of step S3 gained；
S5, will annealing after copper alloy bar carry out pickling after tin plating operation, subsequently heat-treated prepared copper rod finished product, inspection close
Lattice are put in storage.
Continuous casting and rolling speed in described step S3 is 1200m/min, and annealing voltage is 111V, and annealing electric current is 33A.
Annealing temperature in described step S4 is 250 DEG C, and annealing time is 18 minutes.
Pickling in described step S5 uses pickle to be tin plating scaling powder, and its ratio is 1: 3.
Tradition lead element is replaced with element silicon by the present invention, according to copper, silicon, aluminum, ferrum, zinc, nickel, silver, stannum, manganese, lanthanum, molybdenum,
The composition proportion that praseodymium, neodymium, promethium are certain, suitable temperature, the production of alloy bar material, energy is completed by the production technology of continuous casting and rolling
Enough tin bronze alloys bars containing lead element of the replacement completely；Use the production technology of continuous casting and rolling, eliminate traditional mode of production work
Billet in skill processes and annealing pressing steps；The present invention not only obtains the alternative existing leadless environment-friendly containing Redford alloy and closes
Gold copper-base alloy, and shorten the production cycle, improve production efficiency, greatly reduce production cost.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For Yuan, under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (7)
1. the high abrasion copper cash of an environmental protection, it is characterised in that be prepared from by the raw material of following weight portion:
Copper 80～95 parts, silicon 4～8 parts, aluminum 5～8 parts, ferrum 2～4 parts, zinc 4～8 parts, nickel 3～6 parts, silver 2～6 parts, stannum
1～4 part, manganese 2～8 parts, lanthanum 1.1～3.8 parts, molybdenum 3～8 parts, praseodymium 2～6 parts, neodymium 2～7 parts, promethium 1～5 parts and inevitable
Impurity.
The high abrasion copper cash of a kind of environmental protection the most according to claim 1, it is characterised in that by the raw material system of following weight portion
For forming:
Copper 81～90 parts, silicon 5～7 parts, aluminum 6～7 parts, ferrum 3～4 parts, zinc 5～7 parts, nickel 4～6 parts, silver 3～5 parts, stannum
2～3 parts, manganese 3～7 parts, lanthanum 2～3.5 parts, molybdenum 4～7 parts, praseodymium 3～5 parts, neodymium 3～6 parts, promethium 2～4 parts and inevitably
Impurity.
The high abrasion copper cash of a kind of environmental protection the most according to claim 1, it is characterised in that by the raw material system of following weight portion
For forming:
Copper 88 parts, silicon 5 parts, 6 parts of aluminum, ferrum 3 parts, 6 parts of zinc, 5 parts of nickel, silver 4 parts, 3 parts of stannum, 5 parts of manganese, lanthanum 1.8 parts, molybdenum
6 parts, praseodymium 4 parts, neodymium 5 parts, promethium 3 parts and inevitable impurity.
The processing technique of the high abrasion copper cash of a kind of environmental protection the most according to claim 1, it is characterised in that include walking as follows
Rapid:
S1: weigh copper 81～90 parts, silicon 5～7 parts, aluminum 6～7 parts, ferrum 3～4 parts, zinc 5～7 parts, nickel 4～6 parts, silver 3
～5 parts, stannum 2～3 parts, manganese 3～7 parts and inevitable impurity join in main frequency furnace；Heating-up temperature is to 1150～1250
DEG C fusing after；Adjustment temperature is to 1250～1450 DEG C, by lanthanum 2～3.5 parts, molybdenum 4～7 parts, praseodymium 3～5 parts, neodymium 3～6 parts, promethium 2
～in 4 parts of addition smelting furnaces, after band is completely melt, on molten metal, covering high-purity flaky graphite powder is to prevent it from aoxidizing,
And it is incubated 1.5～2 hours at temperature 1200 DEG C；
S2: take out sample in electric furnace, uses direct-reading spectrometer sample to be carried out three to five composition detection, to determine its alloy
Composition, within prescribed limit, then carries out components tests；
S3, guide the copper alloy metal liquid obtained to pour into and produce solid copper by the method for continuous casting and rolling in continuous casting and continuous rolling mill and close
Gold bar；
S4, copper rod is made annealing treatment by the copper alloy bar box-annealing furnace of step S3 gained；
S5, will annealing after copper alloy bar carry out pickling after tin plating operation, subsequently heat-treated prepared copper rod finished product, inspection close
Lattice are put in storage.
The high abrasion copper cash of a kind of environmental protection the most according to claim 4 and processing technique thereof, it is characterised in that described step
Continuous casting and rolling speed in S3 is 750～2200m/min, and annealing voltage is 16～115V, and annealing electric current is 12～45A.
The high abrasion copper cash of a kind of environmental protection the most according to claim 4 and processing technique thereof, it is characterised in that described step
Annealing temperature in S4 is 180～350 DEG C, and annealing time is 15～20 minutes.
The high abrasion copper cash of a kind of environmental protection the most according to claim 4 and processing technique thereof, it is characterised in that described step
Pickling in S5 uses pickle to be tin plating scaling powder, and its ratio is 1: 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610736526.5A CN106222480A (en) | 2016-08-29 | 2016-08-29 | The high abrasion copper cash of a kind of environmental protection and processing technique thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610736526.5A CN106222480A (en) | 2016-08-29 | 2016-08-29 | The high abrasion copper cash of a kind of environmental protection and processing technique thereof |
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Family
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106636792A (en) * | 2016-12-29 | 2017-05-10 | 宁波市胜源技术转移有限公司 | High-electric-conductivity composite metal |
| CN106854711A (en) * | 2016-12-29 | 2017-06-16 | 宁波市胜源技术转移有限公司 | A kind of copper alloy for charger for mobile phone joint |
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|---|---|---|---|---|
| CN1366556A (en) * | 2000-07-25 | 2002-08-28 | 古河电气工业株式会社 | Copper alloy material for electronic or electric equipment parts |
| CN103555993A (en) * | 2013-11-20 | 2014-02-05 | 苏州天兼金属新材料有限公司 | Lead-free environment-friendly copper base alloy bar and preparation method thereof |
| CN104152728A (en) * | 2014-06-05 | 2014-11-19 | 锐展(铜陵)科技有限公司 | Preparation method of high heat-conducting copper alloy wire for automobile wire harness |
| CN105420540A (en) * | 2015-11-02 | 2016-03-23 | 苏州金仓合金新材料有限公司 | Environment-friendly lead-free alloy new material alloy pipe applicable to high-speed locomotive |
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2016
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1366556A (en) * | 2000-07-25 | 2002-08-28 | 古河电气工业株式会社 | Copper alloy material for electronic or electric equipment parts |
| CN103555993A (en) * | 2013-11-20 | 2014-02-05 | 苏州天兼金属新材料有限公司 | Lead-free environment-friendly copper base alloy bar and preparation method thereof |
| CN104152728A (en) * | 2014-06-05 | 2014-11-19 | 锐展(铜陵)科技有限公司 | Preparation method of high heat-conducting copper alloy wire for automobile wire harness |
| CN105420540A (en) * | 2015-11-02 | 2016-03-23 | 苏州金仓合金新材料有限公司 | Environment-friendly lead-free alloy new material alloy pipe applicable to high-speed locomotive |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106636792A (en) * | 2016-12-29 | 2017-05-10 | 宁波市胜源技术转移有限公司 | High-electric-conductivity composite metal |
| CN106854711A (en) * | 2016-12-29 | 2017-06-16 | 宁波市胜源技术转移有限公司 | A kind of copper alloy for charger for mobile phone joint |
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