Cu-Ni-Zn-Mn Alloy

a technology of mn alloys and cu-ni-zn, which is applied in the field of wrought cu-ni-zn (nickelsilver) alloys, can solve the problems of inconvenient cu-based alloys, significant disadvantages of zn alloys of grey color, and inability to meet the strength requirements of tip materials, etc., and achieves good machinability performance in free-machining operations, high electrical conductivity, and increased strength
US20140294665A1Inactive Publication Date: 2014-10-02BAOSHIDA SWISSMETAL
2 Cites 7 Cited by

Patent Information

Authority / Receiving Office
US Ā· United States
Patent Type
Applications(United States)
Current Assignee / Owner
BAOSHIDA SWISSMETAL
Publication Date
2014-10-02
Estimated Expiration
Not applicable Ā· inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

Precipitation hardened alloy on the basis of copper, zinc, nickel and manganese exhibiting a high strength and ductility with values similar to those of stainless steels in combination with excellent machinability. The inventive alloy family is characterized by fine fibre-like or globular precipitates that emerge during intermediate temperature annealing treatments, which in case of the unleaded variations significantly improves the machinability. The alloy of invention is particularly suited for free machining applications such as the production of pen tips and reservoirs for writing implements of reduced tip dimensions, where conventional Cuā€”Niā€”Znā€”Mn alloys fail due to lack of strength and where the corrosion resistance in gel-based inks is insufficient without restriction to other fields of application.
Need to check novelty before this filing date? Find Prior Art

Description

FIELD

[0001] The present invention generally relates to wrought Cuā€”Niā€”Zn (nickelsilver) alloys, more particularly to Cuā€”Niā€”Znā€”Mn alloys mainly for the use in areas where machining operations are substantial.DESCRIPTION OF RELATED ART

[0002] With regard to the current market situation the trend goes from ball point pens typically filled with oil-based inks of relatively high viscosity towards roller-ball pens with inks of lower viscosity. These new lower viscosity inks are mainly water-based gel-inks. Compared to oil-based inks, gel-inks have the advantage of allowing a greater variety of bright colors and can have glitter effects, as they usually contain pigments that sink into the paper. Driven by stylistic arguments and reducing the ink consumption the trend in writing instruments goes towards finer pens, which can be more easily be realized with low viscosity inks, in particular with roller-ball pens. Reducing pen tips to dimensions smaller than 1.6 mm diameters cause stringent conse...

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