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Pressed Fe-Ni alloy and Fe-Ni-Co alloy thin belt for planar aperture mask

A press-forming, iron-nickel-cobalt technology, applied to electrical components, circuits, cathode ray tubes/electron beam tubes, etc., can solve the problems of increased raw material costs

Inactive Publication Date: 2003-02-26
JX NIPPON MINING & METALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the thermal expansion coefficient is increased when an element for increasing strength such as Nb is added to the alloy, it is disadvantageous to add a large amount of this element
Moreover, the addition of elements increases the cost of raw materials

Method used

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  • Pressed Fe-Ni alloy and Fe-Ni-Co alloy thin belt for planar aperture mask
  • Pressed Fe-Ni alloy and Fe-Ni-Co alloy thin belt for planar aperture mask
  • Pressed Fe-Ni alloy and Fe-Ni-Co alloy thin belt for planar aperture mask

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0086] (1) Example 1: Iron-nickel alloy

[0087] Table 3 shows examples and comparative examples related to iron-nickel alloys.

[0088] sample

No

Alloy No.

α (200) ％

β (200) ％

Young's modulusN / mm 2

Average coefficient of thermal expansion α (30～100℃)

×10 -7 / ℃

etched surface

state

Reality

Shi

example

1

1

45

30

140000(○)

7.5(○)

(○)

2

2

40

38

145000(○)

8.9(○)

(○)

3

3

32

36

147000(○)

8.2(○)

(○)

right

Compare

example

4

8

40

30

105000(×)

48.0(×)

(○)

5

9

45

35

128000(○)

32.0(×)

(○)

6

10

40

35

116000(×)

16.0(×)

(○)

7

1

45

45

112000(×)

8.7(○)

(○)

8

2

55

50

141000(○)

12.8(×)

(×)

9 ...

Embodiment 2

[0094] (2) Embodiment 2: iron-nickel-cobalt alloy

[0095] Table 4 shows examples and comparative examples concerning iron-nickel-cobalt alloys.

[0096] sample

No

Alloy

No

α (200)

％

β (200) ％

Young's modulusN / mm 2

Average coefficient of thermal expansion α (30~

100℃)×10 -7 / ℃

State of etched surface

send

Bright

example

18

18

40

42

148000(○)

3.1(○)

(○)

19

19

30

40

152000(○)

3.0(○)

(○)

20

20

32

30

154000(○)

3.9(○)

(○)

21

21

32

40

158000(○)

6.5(○)

(△)

22

22

50

32

142000(○)

6.8(○)

(△)

23

23

40

45

141000(○)

3.3(○)

(△)

24

24

55

30

136000(○)

5.9(○)

(△)

25

25

50

60

137000(○)

3.1(○)

(△)

26

26

55

25

1...

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Abstract

The invention provides a mask for the flat press-forming. A Fe-Ni-Co alloy ribbon for the press-formed flat mask includes, by mass% (hereafter, expressed as %), 30-35% Ni, 2-8% Co, and 0.01-0.5% Mn, further 0.01-0.8% in total of one or two selected from 0.01-0.8% Nb and 0.01-0.8% Ti, and the balance Fe with unavoidable impurities, which include 0.0020-0.0070% C, 0.001-0.030% Si, 0.0005-0.0050% N, and 0.0015% or less S; has a sheet thickness of 0.05-0.3 mm; has a composing ratio of X-ray diffraction intensity for the face (200), of 80% or less, on the surface after the layer of 5% or thicker is removed in the sheet thickness direction from the surface, after the ribbon is annealed at 700 DEG C or higher; and has improved Young's modulus after softening annealed.

Description

technical field [0001] The present invention relates to a shadow mask which completely presses the shape of an electron-ray-transmitting portion into a flat shape and which has excellent drop impact deformation resistance in a state of being mounted on a cathode ray tube and can maintain low bulging phenomenon. Thermally expandable alloy thin strips for flat shadow masks. The present invention particularly relates to iron-nickel-based and iron-nickel-cobalt for flat shadow masks with improved Young's modulus, which is an indicator of drop impact deformation resistance, by controlling the crystallographic orientation and maintaining low thermal expansion. Department of alloy thin strip. Background technique [0002] In a color picture tube, a picture is displayed when electron beams emitted from an electron gun come into contact with phosphors inside a glass plate. The component that uses magnetic force to control the direction of the electron beam is the deflection yoke. I...

Claims

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Application Information

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IPC IPC(8): C22C38/08C22C38/12C22C38/14H01J29/07
CPCC21D8/0236C22C38/001C22C38/004C22C38/02C22C38/04C22C38/08C22C38/105C22C38/12C22C38/14H01J29/07
Inventor 卫藤雅俊小野俊之森正澄
Owner JX NIPPON MINING & METALS CO LTD
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