Copper-based alloy multi-alloy composite bar for making coins
A copper-based alloy, composite rod technology, applied in metal layered products, slender components, building components and other directions, can solve the problems of weak anti-counterfeiting marks, low counterfeiting threshold, easy to be counterfeited, etc. The effect of long circulation cycle and low issuance cost
Inactive Publication Date: 2012-08-08
JINCHUAN GROUP LIMITED
View PDF0 Cites 6 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Although coins have the advantages of wear resistance, long circulation cycle and low issuance cost, most of the current metal circulation coins in my country are processed by a single metal base material or nickel-plated on the surface after processing, the existing problems are The color of the currency is single, and the color is not rich; the threshold for counterfeiting is low, the anti-counterfeiting mark is not strong, it is easy to be counterfeited, and there are many counterfeit coins, which disturb the financial order
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0012] see figure 1 , The copper-based alloy multi-metal composite bar for coinage of the present invention includes a copper rod 1, a middle copper tube 2 and an outer copper tube 3 in sequence from the inside to the outside. The copper rod 1 can be made of bronze alloy, the middle copper tube 2 can be made of high copper alloy (high copper alloy is a copper alloy with a copper content greater than or equal to 96%), and the outer copper tube 3 can be made of white copper alloy. The chemical composition of copper rod 1 is as follows according to mass percentage: Al: 4-6%; Sn: 0.5-1.5%; Zn: 4-6%; copper is the balance, and the sum of impurities is ≦0.3%. The chemical composition of the middle copper tube 2 is as follows according to mass percentage: 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 the balance, and the sum of impurities≦0.2%. The chemical composition of the outer copper tube 3 is as follows: Ni: 8.0-10.0%; Zn: 16...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| diameter | aaaaa | aaaaa |
Login to View More
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 [0001] The invention belongs to the technical field of non-ferrous metal pressure processing, and in particular relates to a copper-based alloy multi-metal composite rod for coinage. Background technique [0002] The metal circulation commemorative coins issued by our country, like the metal circulation currency, have the functions of value scale, circulation means and payment means. Because it is not casted by precious metals such as gold and silver, but by common metals such as copper, nickel, zinc, etc., such as: copper-zinc alloy, copper-nickel alloy, nickel-plated steel core, red copper or high copper alloy and other materials. Although coins have the advantages of wear resistance, long circulation cycle and low issuance cost, most of the current metal circulation coins in my country are processed by a single metal base material or nickel-plated on the surface after processing, the existing problems are The color of the currency is single, and the color ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): F16S3/00C22C9/04C22C9/01B32B1/08B32B15/01B32B15/20
Inventor 贺永东陈平
Owner JINCHUAN GROUP LIMITED