CN102628545A - Copper-based alloy multi-alloy composite bar for making coins - Google Patents
Copper-based alloy multi-alloy composite bar for making coins Download PDFInfo
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- CN102628545A CN102628545A CN2012100868180A CN201210086818A CN102628545A CN 102628545 A CN102628545 A CN 102628545A CN 2012100868180 A CN2012100868180 A CN 2012100868180A CN 201210086818 A CN201210086818 A CN 201210086818A CN 102628545 A CN102628545 A CN 102628545A
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Abstract
The invention discloses a copper-based alloy multi-alloy composite bar for making coins. The composite bar comprises a copper bar, a middle copper pipe and an outside copper pipe sequentially from inside to outside, wherein the copper bar is made from a bronze alloy material; the middle copper pipe is made from a high copper alloy material; the outside copper pipe is made from a cupronickel alloy material; and the copper bar, the middle copper pipe and the outside copper pipe are processed and compounded through pressure. The copper-based alloy multi-alloy composite bar serving as a coin-making base material has the advantages of wear resistance, long circulation cycle and low issuance cost. The manufactured corn is colorful, complex in production process, difficult to counterfeit and extremely strong in anti-counterfeiting ability.
Description
Technical field
The invention belongs to non-ferrous metal pressure processing technology field, relate in particular to a kind of coinage with many metal composite of copper base alloy bar.
Background technique
The metal circulation commemorative coin of China's distribution is the same with the metal currency, has the measure of value, means of circulation and means of payment function.Because it is not precious metal castings such as gold, silver, but by the casting of common metals such as copper, nickel, zinc, as: materials such as copper-zinc alloy, corronil, steel core nickel plating, red copper or copper master alloy.Though coin has wear-resistant; The circulation cycle is long, the advantage that issuing cost is less, but since China's existing metal circulation coin be mostly by single metal base processing or through after the processing again top layer nickel plating form; The problem that exists is that the currency color is single, and color is not abundant; It is lower to copy threshold, and anti-fake mark is not strong, is copied easily, and counterfeit money is more, the raiding disrupting finance order.
Summary of the invention
The object of the invention is exactly the deficiency that exists to above-mentioned prior art, provides a kind of coinage with many metal composite of copper base alloy bar.
Above-mentioned purpose realizes through following proposal:
A kind of coinage is characterized in that with many metal composite of copper base alloy bar said composite bar comprises copper rod, middle copper pipe and outside copper pipe from inside to outside successively.
Composite bar according to above-mentioned is characterized in that, said copper rod is a bronze alloy material, and said middle copper pipe is the copper master alloy material, and said outside copper pipe is a cupronickel alloy material.
Composite bar according to above-mentioned is characterized in that, said copper rod chemical composition by mass percent for being respectively: Al:4-6%; Sn:0.5-1.5%; Zn:4-6%; Copper is surplus, impurity Zong He ≦ 0.3%.
Composite bar according to above-mentioned is characterized in that, said in the middle of the copper pipe chemical composition by mass percent for being respectively: Cu:95-97%; As:0.02-0.06%; Ti:0.03-0.05%; Ce:0.02-0.09%; Fe ≦ 0.1%; Pb ≦ 0.03%; Ni ≦ 0.5%; Zinc is surplus, impurity Zong He ≦ 0.2%.
Composite bar according to above-mentioned is characterized in that, said outside copper pipe chemical composition by mass percent for being respectively: Ni:8.0-10.0%; Zn:16.0-19.0%; Mn:3.0-5.0%; Ti:1.8-2.5%; Fe:0.5-0.9%; Al:0.3-0.7%; Sb:0.2-0.5%; Total impurities is not more than 0.9%, and surplus is a copper; Perhaps, Zn:16.0-19.0%; Mn:3.0-4.0%; Ti:2.3-3.5%; Fe:0.3-0.6%; Al:0.3-0.6%; Sb:0.2-0.4%; Ce:0.05-0.2%; Total impurities is not more than 0.9%, and surplus is a copper.
Beneficial effect of the present invention: adopt many metal composite of copper base alloy bar as the coinage base material; Not only have wear-resistant; The circulation cycle is long, the advantage that issuing cost is little, and the coin rich color of made, complex manufacturing, be difficult for copying, anti-counterfeit capability is extremely strong.
Description of drawings
Fig. 1 is the structural representation of bar of the present invention.
Embodiment
Referring to Fig. 1, coinage of the present invention comprises copper rod 1, middle copper pipe 2 and outside copper pipe 3 from inside to outside successively with many metal composite of copper base alloy bar.Copper rod 1 can be selected bronze alloy material for use, and middle copper pipe 2 can be selected copper master alloy (copper master alloy is that copper content is greater than or equal to 96% Cuprum alloy) material for use, and outside copper pipe 3 can be selected cupronickel alloy material for use.Copper rod 1 chemical composition by mass percent for being respectively: Al:4-6%; Sn:0.5-1.5%; Zn:4-6%; Copper is surplus, impurity Zong He ≦ 0.3%.Middle copper pipe 2 chemical compositions by mass percent for being respectively: Cu:95-97%; As:0.02-0.06%; Ti:0.03-0.05%; Ce:0.02-0.09%; Fe ≦ 0.1%; Pb ≦ 0.03%; Ni ≦ 0.5%; Zinc is surplus, impurity Zong He ≦ 0.2%.Outside copper pipe 3 chemical compositions by mass percent for being respectively: Ni:8.0-10.0%; Zn:16.0-19.0%; Mn:3.0-5.0%; Ti:1.8-2.5%; Fe:0.5-0.9%; Al:0.3-0.7%; Sb:0.2-0.5%; Total impurities is not more than 0.9%, and surplus is a copper; Perhaps, Zn:16.0-19.0%; Mn:3.0-4.0%; Ti:2.3-3.5%; Fe:0.3-0.6%; Al:0.3-0.6%; Sb:0.2-0.4%; Ce:0.05-0.2%; Total impurities is not more than 0.9%, and surplus is a copper.
Its preparation method is described below:
The preparation of copper rod 1: the furnace temperature that melts out of alloy is: 1200-1230 ℃, adopt cryolite refining, covering; Adopt horizontal casting or vertical D.C.casting mode to prepare the qualified alloy cast ingot that diameter is Ф 80-Ф 440mm (the ingot casting sized is confirmed according to extrusion press extruding force and recipient specification).Ingot casting is cut into the short ingot of extruding usefulness.To lack ingot and be heated to 830-850 ℃, and carry out forward or reverse extruding, extruded article is that diameter is the bar of Ф 15mm or Ф 16mm.Bar is through overpickling, passivation, again through making head, being stretched as the bar that diameter is Ф 12mm.The stretching bar is annealed, pickling, surface clean, and is subsequent use.
The preparation of middle copper pipe 2: the furnace temperature that melts out of alloy is: 1180-1220 ℃, adopt charcoal covering, phosphor bronze alloy deoxidation; Adopt horizontal casting or vertical D.C.casting mode to prepare the qualified alloy cast ingot that diameter is Ф 120-Ф 440mm (the ingot casting sized is confirmed according to extrusion press extruding force and recipient specification).Ingot casting is cut into the short ingot of extruding usefulness.To lack ingot and be heated to 820-850 ℃, and carry out forward perforation extruding, extruded article is that diameter is that Ф 50mm-Ф 140mm, wall thickness are the tubing of 6-14mm.Tubing is rolling through overpickling, passivation, crop end, aligning, Pilger, rolling pipe again through the system head, be stretched as the tubing that diameter is Ф 18 * 2mm.Stretching tubing is annealed, pickling, surface clean, and is subsequent use.
The preparation of outside copper pipe 3: the furnace temperature that melts out of alloy is: no Alpaka 1190-1220 ℃, adopt charcoal to cover; There is Alpaka 1190-1220 ℃, adopt cryolite to cover.Adopt horizontal casting or vertical D.C.casting mode to prepare the qualified alloy cast ingot that diameter is Ф 180-Ф 440mm (the ingot casting sized is confirmed according to extrusion press extruding force and recipient specification).Ingot casting is cut into the short ingot of extruding usefulness.To not have the short ingot of Alpaka and be heated to 850-930 ℃, and have the short ingot of Alpaka to be heated to 930-950 ℃; Short ingot after the heating carries out forward perforation extruding, and extruded article is that diameter is that Ф 70mm-Ф 140mm, wall thickness are the tubing of 6-14mm.Tubing is rolling through overpickling, passivation, crop end, aligning, Pilger, rolling pipe again through the system head, be stretched as the tubing that diameter is Ф 30 * 5mm.Stretching tubing is annealed, pickling, surface clean, and is subsequent use.
The pressure processing process:
Before the extruding, the preheating temperature of compression tool is: the preheating temperature of recipient is 300-450 ℃, and the preheating temperature of extrusion die and dummy block is 200-300 ℃, and the preheating temperature of pecker is 200-350 ℃.
In the copper pipe 2, copper rod 1 and copper pipe 2 are made head together in the middle of copper rod 1 packed into, the compound stretching of a time is carried out in system head back on the hydraulic tensioner of 30-50 ton, and the diameter of the middle composite bar after the stretching is Ф 16mm.The greasy dirt on composite bar surface in the middle of removing, to the surface clean, subsequent use.
Outside middle the composite bar of top operation preparation packed in the copper pipe 3; Middle composite bar and outside copper pipe 3 are made head together; Tubing behind the system head carries out the compound stretching of a time on the hydraulic tensioner of 30-50 ton, the diameter of the composite bar after the stretching is Ф 24mm.Remove the greasy dirt on composite bar surface, the surface is cleaned, after bar is annealed, obtain many metal composite of copper base alloy bar of composite demand.
Claims (5)
1. a coinage is characterized in that with many metal composite of copper base alloy bar said composite bar comprises copper rod, middle copper pipe and outside copper pipe from inside to outside successively.
2. composite bar according to claim 1 is characterized in that, said copper rod is a bronze alloy material, and said middle copper pipe is the copper master alloy material, and said outside copper pipe is a cupronickel alloy material.
3. composite bar according to claim 2 is characterized in that, said copper rod chemical composition by mass percent for being respectively: Al:4-6%; Sn:0.5-1.5%; Zn:4-6%; Copper is surplus, impurity Zong He ≦ 0.3%.
4. composite bar according to claim 2 is characterized in that, said in the middle of the copper pipe chemical composition by mass percent for being respectively: Cu:95-97%; As:0.02-0.06%; Ti:0.03-0.05%; Ce:0.02-0.09%; Fe ≦ 0.1%; Pb ≦ 0.03%; Ni ≦ 0.5%; Zinc is surplus, impurity Zong He ≦ 0.2%.
5. composite bar according to claim 2 is characterized in that, said outside copper pipe chemical composition by mass percent for being respectively: Ni:8.0-10.0%; Zn:16.0-19.0%; Mn:3.0-5.0%; Ti:1.8-2.5%; Fe:0.5-0.9%; Al:0.3-0.7%; Sb:0.2-0.5%; Total impurities is not more than 0.9%, and surplus is a copper; Perhaps, Zn:16.0-19.0%; Mn:3.0-4.0%; Ti:2.3-3.5%; Fe:0.3-0.6%; Al:0.3-0.6%; Sb:0.2-0.4%; Ce:0.05-0.2%; Total impurities is not more than 0.9%, and surplus is a copper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100868180A CN102628545A (en) | 2012-03-29 | 2012-03-29 | Copper-based alloy multi-alloy composite bar for making coins |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100868180A CN102628545A (en) | 2012-03-29 | 2012-03-29 | Copper-based alloy multi-alloy composite bar for making coins |
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| CN102628545A true CN102628545A (en) | 2012-08-08 |
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| CN2012100868180A Withdrawn CN102628545A (en) | 2012-03-29 | 2012-03-29 | Copper-based alloy multi-alloy composite bar for making coins |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102618751A (en) * | 2012-04-16 | 2012-08-01 | 金川集团有限公司 | Nickle free cupronickel alloy and manufacturing method thereof for coinage |
| CN102618749A (en) * | 2012-04-16 | 2012-08-01 | 金川集团有限公司 | Cupronickel alloy and manufacturing method thereof for coinage |
| CN105793450A (en) * | 2013-10-07 | 2016-07-20 | 仕龙阀门公司 | White antimicrobial copper alloy |
| CN108441672A (en) * | 2018-03-06 | 2018-08-24 | 浙江灿根智能科技有限公司 | A kind of casting method of large-scale copper alloy bushing |
| US10385425B2 (en) | 2012-10-26 | 2019-08-20 | Sloan Valve Company | White antimicrobial copper alloy |
-
2012
- 2012-03-29 CN CN2012100868180A patent/CN102628545A/en not_active Withdrawn
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102618751A (en) * | 2012-04-16 | 2012-08-01 | 金川集团有限公司 | Nickle free cupronickel alloy and manufacturing method thereof for coinage |
| CN102618749A (en) * | 2012-04-16 | 2012-08-01 | 金川集团有限公司 | Cupronickel alloy and manufacturing method thereof for coinage |
| CN102618751B (en) * | 2012-04-16 | 2013-05-08 | 金川集团有限公司 | Nickle free cupronickel alloy and manufacturing method thereof for coinage |
| CN102618749B (en) * | 2012-04-16 | 2013-07-17 | 金川集团有限公司 | Manufacturing method of cpronickel alloy for coinage |
| US10385425B2 (en) | 2012-10-26 | 2019-08-20 | Sloan Valve Company | White antimicrobial copper alloy |
| CN105793450A (en) * | 2013-10-07 | 2016-07-20 | 仕龙阀门公司 | White antimicrobial copper alloy |
| CN105793450B (en) * | 2013-10-07 | 2017-11-21 | 仕龙阀门公司 | White antibacterial copper alloy |
| CN108441672A (en) * | 2018-03-06 | 2018-08-24 | 浙江灿根智能科技有限公司 | A kind of casting method of large-scale copper alloy bushing |
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Application publication date: 20120808 |