Unlock instant, AI-driven research and patent intelligence for your innovation.

fe‑p copper alloy sheet excellent in strength, heat resistance and bending workability

A technology of bending workability and copper alloy sheet, which is applied in the field of Fe-P copper alloy sheet, can solve problems such as stamping property that has not been studied, and achieve the effect of excellent bending workability and heat resistance

Active Publication Date: 2017-03-22
KOBE STEEL LTD
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The Fe-P-based copper alloy sheet of Patent Document 3 has excellent strength and heat resistance, but no study has been made on the stampability

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 more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • fe‑p copper alloy sheet excellent in strength, heat resistance and bending workability
  • fe‑p copper alloy sheet excellent in strength, heat resistance and bending workability
  • fe‑p copper alloy sheet excellent in strength, heat resistance and bending workability

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] Hereinafter, the Fe—P-based copper alloy sheet of the present invention will be described more specifically.

[0020] (Chemical Composition of Fe-P Copper Alloy)

[0021] Fe contributes to the improvement of the strength and heat resistance of the Fe—P-based copper alloy sheet, and also has the effect of suppressing the growth of crystal grains during hot rolling or recrystallization heat treatment. When the content of Fe is less than 1.6% by mass, the above effects are insufficient. On the other hand, if the content of Fe exceeds 2.6% by mass, coarse Fe particles (a few μm or more in diameter) will be generated due to two-liquid phase separation and crystallization during melting and casting, and the platability and etching properties will decrease. Therefore, the content of Fe is 1.6 mass % or more and 2.6 mass % or less, the lower limit is preferably 1.7 mass %, more preferably 1.8 mass %, and the upper limit is preferably 2.5 mass %, more preferably 2.4 mass %.

...

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

PropertyMeasurementUnit
Vickers hardnessaaaaaaaaaa
diameteraaaaaaaaaa
Login to View More

Abstract

The invention provides a Fe-P based copper alloy sheet excellent in strength, heat resistance and bending processibility. The Fe-P based copper alloy sheet is composed, as follows, of more than 1.6 wt% or more and less than 2.6 wt% of Fe, more than 0.01wt% and less than 0.05wt% of P, more than 0.01wt% and less than 0.5wt% of Zn, more than 0.01wt% and less than 0.20wt% of Sn, less than 0.003wt% of C, less than 0.05% of Co, Si and Cr in total, Cu as a margin and inevitable impurities. When a crystal structure of a cross section parallel to a rolling direction and perpendicular to a planar face through EBSD observation, the average of weighting performed using equivalent circle diameter of an area to various particle is 10 [mu]m, conductivity is more than 60% IACS, and presence density of precipitated particles of the Fe or a Fe-P compound, the equivalent circle diameter of which is 10 [mu]m to 40 [mu]m, is more than 20 one / [mu]m<2>.

Description

technical field [0001] The present invention relates to an Fe-P-based copper alloy sheet that is excellent in strength, heat resistance, and bendability and is suitable as a material for electrical / electronic components such as semiconductor lead frames, terminals, connectors, and bus bars. Background technique [0002] Since copper and copper-based alloys have very high electrical conductivity and thermal conductivity, they can be used as materials for electrical / electronic components represented by lead frames. In recent years, the thinner walls, narrower leads, and narrower pitches of lead frames have been increasingly advanced, and some even have a thickness of 100 μm or less, requiring extremely high strength. [0003] In addition, in the production of the lead frame, a strip material obtained by rolling copper or a copper-based alloy to a predetermined thickness is processed into a predetermined shape by performing pressing and etching. In press working, in order to r...

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
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C22C9/00
Inventor 尾崎良一
Owner KOBE STEEL LTD