JPS5964749A - Soft glass sealing alloy - Google Patents

Abstract

PURPOSE:To obtain the titled sealing alloy improved in strength and having the same coefficient of thermal expansion and adhesion strength of the oxide film as those of the conventional sealing alloy, by incorporating Ni, Cr, Si, Mn, Al, C and Be in a prescribed proportion, with the balance being substantially Fe. CONSTITUTION:The soft glass sealing alloy consists of 40-48wt% Ni, 4-8wt% Cr, 0.10-0.4wt% Si, 0.1-0.40wt% Mn, 0.05-0.40wt% Al, 0.015wt% or less C, 0.05-0.50wt% Be and the balance of substantially Fe. There is little difference between the coefficient of thermal expansion of the present soft glass sealing alloy and that of the conventional 42Ni-6Cr-Fe alloy or 47Ni-5Cr-Fe alloy. The hardness of the present soft glass sealing alloy is further improved, in comparison with the prior alloys. Accordingly, when the present alloy is used for example for lead frame material of a digital display tube for automobiles, its life can be prolonged, it can be made thin, and therefore the material therefor and the cost of it can be saved.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a soft galanus sealing alloy with high strength.

Generally, 42Ni-6Cr is used as an alloy for soft glass sealing.
-eFe alloy, 4.7Nj--5Or-Fe alloy, etc. are widely used. Normally, these alloys are punched or etched into the desired shape, then subjected to 1p:% oxidation treatment in wet hydrogen and sealed with gaffne, and are used to make brown bamboo anode buttons, lead frames of digital display tubes, etc. It is used.

By the way, recently, digital display tubes have been used in automobiles, etc., and the above-mentioned sealing alloy of digital display tubes is
The strength of the etched part is insufficient in the J punching part,
As a result, there is a problem that the alloy plate is easily broken due to vibrations while the car is running.Also, due to the desire to make the alloy plate thinner in order to save labor costs, the demand for sealing alloys with sieve hardness has increased. It's here.

The purpose of the present invention is to develop an alloy that can meet such demands.

4~Bwt%Cr, F'eAs a result of various researches on alloying elements that increase the hardness after oxide coating treatment without changing the thermal expansion coefficient of the sealing alloy, we found that Be and C were added to the above alloy. It has been discovered that by containing a specific amount of , it is possible to increase the hardness of conventional sealing alloys without deteriorating their thermal expansion coefficients and adhesion strength to oxidized materials.

The present invention is based on the above knowledge, and is based on the above findings.
wt,%, cr4-swt%, SiO,10-0
,,40Wj%.

Mn 0.10-0.40wt%, AtO,05-
0,40wt% and C0,015wt% or less, Be O
,05-0,50wt%, and the remainder is substantially Fe.
The gist is an alloy for a soft glass seal 1 having a strong hole.

In the present invention, the reason why the component rα range is limited as described above will be explained below.

In N'i409, 1:, button expansion) jl (coefficient becomes too small, the difference in thermal expansion coefficient with soft glass becomes large,
Glass 1-. I'm having trouble finding the first place! fF(!: Naru. Still 48%
If it exceeds this, the coefficient of thermal expansion will be too large and the difference in coefficient of expansion will be too large (1.1) with soft glass, which is not desirable.

In addition, if Cr is less than 40%, the coefficient of thermal expansion will be too small, and the coefficient of expansion (ζ) will be too large, and the relationship between the oxide film and the alloy base will be poor. If it exceeds 8%, the coefficient of thermal expansion becomes too large, and the coefficient of thermal expansion with soft glass is 1.zeta.

If the Si content is less than 0.10%, the adhesion of the formed oxide film with the alloy base is poor, and if it exceeds 0.40%, the machinability will deteriorate, which is not preferable.

It is effective to improve hot workability by fixing the S added to MnS as a raw material, but if it is less than 0.10%, the effect is small, and if it exceeds 0.40%. Since the effect is saturated in the deposit area, its inclusion on the sphere is necessary.
! There is no ¥.

At improves the 1-core 5h+ property of the oxide film on the alloy base〃J
However, if it is less than 0.05%, it has no effect, and if it is added in excess of 0.40%, it is not preferable because it deteriorates the processability.

This is effective for hardness (Lr). However, if it is less than 0.05%, the effect is small, and the
If it exceeds 0.50%, @+ (machining 1-1° will deteriorate.

C (if it is higher than 0.015%, CO cuffs will react with the 〇- in the cuffs and CO cuffs will be generated, and if it is 31 nights old, there will be bubbles in the sea urchin) It is undesirable because it generates and reduces the strength of cuff arrival.C0,015
If it is less than %, there is no release/package on the Q island, and it has a good effect on the 6-strength direction. In addition, in the alloy of the present invention, by controlling Or-1-16 to 0.010% or less, it is effective in preventing the formation of empty 7 bubbles at the time of eyebrow formation and improving workability.

The present invention will be explained below with reference to Examples.

The alloys of the present invention and the ratio 1-mesh alloy whose components are listed in Table 1 are subjected to step rolling, softening annealing, and then final processing at a rate of 80%.
Cold rolled plate thickness 02mm x 11134Q mm
×Length a5.00011ff plate plate hardness measurement sample-1
were sampled and their hardness was measured.

``?!/ζsisse (Expansion characteristics t?iJ From the hot rolling yield recorded, sample N': 1 between 3 MM f
'CX 41 was settled after 30 minutes of ρL work.

The table shows the hardness of each sample and the average coefficient of thermal expansion in each of the two grade ranges when rolled and after heat treatment at each temperature for 20 minutes.

As shown in Table 1, the alloy of the present invention is similar to conventional sealing alloys such as 42Nj-6Cr-Fe alloy and 47Nt-5cr-
Thermal expansion of 4i″e alloy 111.! There is almost no difference in coefficient,
Moreover, the hardness is further improved.

Therefore, the present invention can be applied to, for example, 1-month 1'v + mid-month J digital display tube! Since the life of the J-1' frame material can be extended and the plate thickness can be made thinner, resources and costs can be saved.

315-

Claims (1)

[Claims] (1) Ni 40-48wt%, Cr4-8wt%
, SiO, 10-0.4wt%, MnO, 10
~0.40wt%, At0.05~0.40wt% and c
o, oi5wt% or less, BeQ, 05-0.50wt%
1. A soft Galanus sealing abuse alloy comprising a strong hole, the remainder being substantially composed of Fe.