JPS6384785A - Product of inlaid clad material - Google Patents

Abstract

PURPOSE:To omit the grinding work and to produce inlaid clad material without bulging by specifying a rake angle of a cutting tool for machining a groove in the longitudinal direction on a base metal band. CONSTITUTION:A groove is machined continuously using the cutting tool 2 for machining the groove with the rake angle >=30 deg. in the longitudinal direction of the base metal band 1 and a noble metal bar stock 3 is rolled and adhered to the exposed groove part by rolling rolls 4 to produce a clad band 5. Since a pickup does not take place on the newly generated surface by the rake angle 6, a problem of the bulging does not take place in the heat treatment after being rolled and adhered. Accordingly, the need for the grinding work to remove the bulging is eliminated. Furthermore, when the rake angle 6 is made to 41 deg., since the service life of the cutting tool 2 is shortened, an upper limit is desirable to be 40 deg..

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method of manufacturing an inlay clad material used in electronic devices and the like.

[Conventional technology]

Conventional inlay cladding materials are made by cutting grooves on the base metal strip using a cutting tool with a rake angle of 29° or less, but with this method, grooves are formed on the horizontal plane in the longitudinal direction of the machined grooves as shown in Figure 3. Grooves called welts occur, and when precious metal strips are rolled and crimped as they are, outside air is trapped in the crevices.
If heat treatment is performed after rolling and pressure bonding, blistering will occur. For this reason,
In order to remove this peeling, the grooved part was polished with a wire brush, cleaned, and then rolled and crimped.

[Problem that the invention seeks to solve]

As mentioned above, when grooving is performed using a cutting tool with a rake angle of 29 degrees or less, peeling occurs, and in order to remove this peeling, it is necessary to perform a new polishing operation using a wire brush or the like. Furthermore, if rolling and crimping was performed without performing this polishing operation, the problem of blistering occurred during the heat treatment after rolling and crimping.

This blister causes a problem in the manufacture of electronic equipment, in that when wires are joined, the wire cannot be joined to the part with the blister.

An object of the present invention is to provide a method for manufacturing an inlay clad material that can omit a polishing operation and can provide an inlay clad material that is free from blisters.

[Means for solving problems]

The present invention solves the above-mentioned problems by processing grooves using a groove cutting tool with a rake angle of 30° or more, and rolling and pressing a precious metal strip into the groove of the exposed new surface to form a cladding material. .

"Function" According to the present invention, by setting the rake angle of the grooving tool to 30 degrees or more, a new surface that does not cause peeling can be exposed, and an inlaid clad material without blisters can be manufactured. Note that the upper limit of the rake angle is preferably 40°. If the rake angle is 41° or more, the life of the cutting tool will be shortened, and if it is 29° or less, peeling will tend to occur on the exposed new surface. explain.

To explain Fig. 1, a metal strip of 42% Ni-Fe, which is a sealing alloy, with a thickness of 0.8 m and a width of 27.8 m was used as the base material, and was run at a line speed of 10 m/lll1n.
High-speed tool steel with rake angle of 30° or more as a tool for groove machining
40° (see Figure 2), blade width 2. O crane, depth 0.1
A groove of 9n is dug and then immediately the precious metal strip is made with a thickness of 0.
．． 191m, width 2. Reduction rate of Omm silver solder strips is 45%.
It was rolled and crimped at ~50%. As a result, we were able to produce an inlay clad material that does not cause blisters even if the polishing work is omitted. Further, even when there are two noble metal strips, good results can be obtained by the above manufacturing method. Further, if the reduction ratio in the case of rolling crimping is 45% or more, good results can be obtained with the above manufacturing method.

〔Effect of the invention〕

According to the present invention, the conventional polishing work can be omitted, and an inlay clad material without blisters can be provided.

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram showing a method of manufacturing an inlay clad material according to an embodiment of the present invention, Fig. 2 is a diagram showing the shape of the tip of a cutting tool used in the present invention, and Fig. 3 is a diagram showing a groove formed by a conventional manufacturing method. It is a schematic diagram showing peeling after processing. 1: Base material band, 2: Part-time job, 3:1! Wax strip, 4: Roll roll, 5: Clad band, 6: Rake angle, 7: Peeling.

Claims (1)

[Claims] After continuously cutting grooves in the longitudinal direction of the base metal strip using a cutting tool with a rake angle of 30° or more to expose the new surface, a precious metal strip is rolled and crimped into the groove to form a cladding material. A method for manufacturing an inlay clad material characterized by: