JPS58159999A - Production of phosphor copper brazing material - Google Patents

Abstract

PURPOSE:To manufacture easily a phosphor copper brazing material of a desired diameter from a core of an optional diameter, by moving the core of copper (alloy) while immersing the same in the melt of a Cu-P alloy, and sticking the Cu-P alloy on the outside of the core then drawing the core to a desired shape and cooling the same. CONSTITUTION:An hourglass shaped roll 2 made of alumina is installed in approximately the central bottom part of a melt tank 1 for a Cu-4-9% alloy. While the brass wire 4 of 0.5mm.phi drawn out from a supplying device 3 is immersed in the tank 1, the wire is moved at 5m/sec speed and is drawn out through the roll 2 from the tank 1. Phosphor copper is stuck on the outside circumference of the wire 1 by such immersion, whereafter the wire is passed through an alumina die 5 provided on the outside of the tank 1 to be formed into a round shape and to be removed of the excess phosphor copper. Cold air 6 is blown to such wire to cool the same. A cooled phosphor copper brazing material 8 of 3.2mm.phi outside diameter is taken up with a take-up bobbin 7.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing phosphor steel brazing material.

In general, round steel brazing material, which has a phosphorus content of 4 to 8 VT% in steel, becomes soft at high temperatures and brittle at room temperature, making processing extremely difficult. Therefore, temperature control during processing is extremely strict and production is difficult. The process was complicated and the cost was high.One example is casting 106φ
was hot-forged to 55X55, and then subjected to first hot rolling (8φ), second hot rolling (3,4φ), and third hot rolling (2,3φ) to warm wire drawing. A product with a diameter of 1φ is obtained.

The present invention has been made as a result of intensive research aimed at improving these drawbacks, and as a result has discovered a method for continuously manufacturing copper brazing material in a single step. That is, in the method of the present invention, a core wire of steel or copper alloy is run while being immersed in a molten metal of Cu-4 to 9wt$P alloy to deposit Cm-P alloy in a desired shape on the outer periphery of the core. The reason for setting the phosphorus content to 4 to 9 vt in the method of the present invention is that it is less than 4 wt 'Ik and 9 vt. If it exceeds -, the melting point becomes high and the brazing performance deteriorates (9th).

In addition, in the case of using only copper or copper alloy as the core wire, these metals and #111111I phosphor steel are compatible with each other, and the core wire is rounded so that the phosphor steel is well placed around the outer periphery of the core wire.

As the copper alloy, brass, phosphor bronze, tin copper, etc. are used.Also, the running speed of the core wire is not particularly limited, but is usually 3 to 10 m/min. i to 7-i/min).

The heating time is preferably 800 to 5 seconds.

In the method of the present invention, the phosphorous copper is different from the ilK of the core wire), and when it is desired to obtain a phosphor steel with a large diameter, it is also possible to use a core wire made of Kotaiko. So O core wire diameter, phosphorus copper diameter and OIl
The relevant section is as follows: No. 111O.

Table 1 As shown above, if a core wire diameter of, for example, 0.1 φ is used, the maximum diameter of the phosphor steel alloy is 0.71 φ, so it is necessary to obtain a wire with a diameter larger than this. In such cases, it is necessary to use a core wire with a large diameter or to install a series of melting baths for phosphorus copper and repeat the adhesion resistance of the phosphorus steel alloy multiple times.Next, the method of the present invention must be carried out. Let's discuss an example.

As shown in the drawing (Cm -5vt Chi Pfm, an am roller 2 made of alumina is installed at the bottom of the center of the tank 1, and a supply 3
A 114 t brass wire of 0.5 waφ drawn from a wire is immersed in a bathtub and run at a moderate speed of 5 Ass, and pulled out through a roller to prevent phosphor copper from adhering to the outer periphery of the wire. After passing through an aluminum camera mace 5 installed outside the tank to make it into a perfect circle shape and removing excess phosphor steel, it was blown with cold air 6 and wound onto a winding bobbin 1 to form a glue with an outer diameter of 3.2 wlφ. The furnace is an electric furnace that is equipped with an electric furnace that heats the tank 1.

In this way, the method of the present invention can automatically and continuously produce phosphor steel brazing material by introducing the core wire into a phosphor copper bath, and can produce a desired polarized phosphor steel by changing the role of the core wire. It can be used to move around raw materials. Therefore, the process is extremely simple, productivity is improved, and costs are low.

[Brief explanation of drawings]

1... Molten metal tank, 2... Roller, 5-9f lie, 4...
- Core wire, 5... Alumina die, cold air, 1 - Winding pin, 8... Brazing material, 9 - Electric furnace - Applicant's representative Patent attorney Takehiko Suzue 1, Display of case Patent Application No. 57-41296 2, Title of invention: Process for manufacturing phosphorous copper brazing material 3, Relationship with the amended case Patent applicant (529) Furukawa Electric Co., Ltd. 4, Agent June 29, 1982 Day 6, Specification subject to amendment 7, Contents of amendment 11) Description 5N Line 7 “4. Brief explanation of the drawings” and Line 8 “l...molten metal tank,” “Drawings” is a schematic explanatory diagram for showing an example of the method for manufacturing the phosphorus-copper brazing material of the present invention.'' is inserted.

Claims (1)

[Claims] A copper or copper alloy core wire is run while immersed in a molten metal of 01-4~9vt11P alloy, and the Cu-P is coated on the outer periphery of the cough core wire.
A method for manufacturing a phosphor steel brazing material, which comprises applying an alloy to a desired shape, squeezing it into a predetermined shape using a cutting chair, and cooling it.