JPS599137A - Production of age-precipitation type alloy - Google Patents

Abstract

PURPOSE:To simplify stages and to produce a fine wire at a low cost, by cooling and solidifying quickly an alloy which exhibits an age-precipitating behavior from a molten state directly to a wire body of a specific thickness, and heat- treating the same to cause age-precipitation. CONSTITUTION:An alloy which exhibits an age-precipitating behavior refers to an alloy of copper, Al, Ni, Ti, etc. and is an alloy which is hardened by age- precipitation. The melt 1 of such alloy is admitted steadily from the nozzle 3 in the bottom part of a vessel 2 into the spacing between twin rolls 4 and is quickly cooled to solidify to a rod body 5 having <=1mm. thickness or <=1mm. diameter. The cooling is accomplished at 10<2>deg.sec<-1> velocity. The formed body 5 is subjected finally to a heat treatment for the purpose of age-precipitation or, if necessary, to cold working at <=95% reduction of area, and is then subjected to a heat treatment for age-precipitation, whereby the product is obtd.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] This invention relates to a method for manufacturing an age-precipitated alloy wire body used as a conductor or part for machines, appliances, etc.

(Background technology) In recent years, there has been a high demand for smaller and lighter equipment! ′), for example, is there a demand for thinner wires for wiring conductors, @ wire conductors, etc.J(
It is. Moreover, as wires become thinner, the end of each sheet of high-strength material r1 also becomes stronger. Softening resistance is also often required.

Conventionally, it was referred to as high conductivity, high strength, high ductility, and surface softening.
- Unalloyed so-called age precipitation type alloys have often been used to meet the above requirements.

However, these age-precipitated alloys do not necessarily have better workability than pure metals, and in order to form thin wires, they must be processed and processed in multiple steps.

For example, a 3.2 mm thick strip of aged precipitation alloy is manufactured.
When trying to produce I, conventional general industrial manufacturing
As shown in Figure 3 A), the process is melted into an ingot, at
After manufacturing, hot processing by hot rolling or hot extrusion is carried out, followed by solution heat treatment using a supersaturated solid solution, followed by removal of surface oxides in many cases. After that, cold working is carried out, and the area reduction rate is at most 90% F or more.
In Figure 3 (a) and (b), the final aging precipitation heat treatment generally involves a number of steps.In Figures 3 (a) and (b), the numbers in parentheses indicate steps 2 to 3, which are carried out as necessary.

Such JJ method requires many steps, especially solution heat treatment and medium heat spooning which consume a large amount of thermal energy and time, and cold workability is not necessarily good. This method has the disadvantage that it becomes expensive due to increased processing and heat treatment costs, and that the loss rate increases if there are many steps.

``Non-explosion'' was developed in order to solve the problems of the J series, and it is a method to manufacture fine wires directly from the molten metal by immediately rapidly solidifying the molten alloy into a linear body that undergoes aging precipitation. However, it is an object of the present invention to provide a method for manufacturing an age-precipitated alloy that does not require particularly troublesome solution treatment, simplifies the process to Vi 1 degree, reduces equipment costs and manufacturing costs, and has good softening resistance. It is something.

In the present invention, a heat treatment for aging precipitation is performed after the aging precipitation behavior is directly rapidly solidified from the molten swelling to a linear body with a thickness of 1 mm or less or a diameter of 1 mm or more. ! This is a process for producing an aged precipitation type alloy characterized by full rotation of P.

In Kihatsu RL11, alloys that exhibit aging precipitation behavior aJ and (1) alloys of copper, aluminum, nickel, titanium, etc., which harden due to aging precipitation, such as Cu
Alloys with r + Zr, Be * Fe, Co, etc., Ae, Cu, 8 Ig, , Zn, Si +
It is an alloy with Fe + Zr + Ag, etc.

Figure 3 (ol &1) is a diagram showing the steps of an embodiment of the method of the present invention. A linear body is prepared by a method of rapid solidification (referred to as direct wire manufacturing method) into a linear body having a diameter of 1 mm or less.

This rapid solidification (・1, cooling rate 102 deg, sec
, '-' or more is desirable.

Various methods are applied to this rapid solidification method, such as f:J
There are methods shown in FIGS. 1 and 2. In the method shown in Fig. 1, the molten metal 1 is steadily poured from the nozzle 3 at the bottom of the molten metal container 2 between the twin rolls 4 and 4, and is rapidly solidified by the rolls 4 and 4. This is a method for obtaining thick strips 5. In addition, in the case shown in FIG. 2, the molten metal l is constantly spouted at $-1 from the nozzle 3 at the bottom 9 of the molten metal container 2, and the rotating body 7
This method involves injecting the liquid into the liquid fluid 6 and rapidly solidifying it. In this case, the linear body 8 is held by centrifugal force due to the rotation of the six-piece rotating body 7 and the linear body 8 is wound around the wall of the rotating body 7 by 70 degrees.

The rapid solidification method used for misexplosion is not limited to the Jj method shown in Figs. The Jj method, in which molten metal 1 is continuously injected into cold water in a laminar flow region)jυ, is very good.

Due to this rapid solidification, the solid solution expansion of the solid solution elements at high temperatures is carried out to the same extent at room temperature, resulting in a supersaturated solid solution, eliminating the need for conventional solution treatment.

Next, the linear body obtained by rapid solidification is shown in Figure 3 (b).
As shown in Figure 3, after final heat treatment for aging precipitation or full cold working with an area reduction of 95% or more as required, the product is processed to the final size and then subjected to aging precipitation heat treatment. shall be. Further, if necessary, cold working may be added after the aging precipitation heat treatment.

According to this method, it does not require as many steps as shown in the conventional cooking method, requires only 2 to 31 culms, and requires only simple equipment.
``The number is drastically reduced.

(Example I) C [1-06%Cr
The cooling rate was approximately 10" deg, sec, -'
A whole strip with a thickness of Q and 5 mm was prepared. In this state, each alloy became a supersaturated solid solution in which the alloying elements were supersaturated.

When this was subjected to aging precipitation heat treatment under temperature conditions suitable for each alloy, the electrical conductivity was restored, precipitation hardened, and the tensile strength increased.

(Example 2) Cu-0.6%Cr was
From the molten metal of the joint venture, the cooling rate is approximately 2X 1103de.

A round wire with a diameter of 0.2 mm was created with Sec, -'. After drawing this to Q, l mm f, it was drawn at 450'C to 2
When subjected to time aging precipitation heat treatment, the properties shown in Table 1 were obtained.

Table 1 Cu-0.15% Z
Cooling rate approx. 5XIO3 degs
ec, -'te diameter 0. I made all the Imm round wires. After drawing this wire to 0.02 rum f, it was run continuously in a tunnel softening furnace at a temperature of 650"C to undergo aging precipitation.
Immediately pass through the enamel burner and apply the enamel.
Akatsuki IXJ1. As a result, a winding wire with a conductor outer diameter of 0.02 ml was obtained.

The resulting winding conductor has a conductivity of 902% lAC3 and a tensile strength of 42 Kq/rrul, approximately twice the strength of conventional mild steel conductors. It was also much lower than before.

(Effects of the Invention) The manufacturing method for aging precipitation heat treatment of the present invention configured as described above has the following effects.

(a) In order to rapidly solidify an alloy exhibiting an aging C of 1fi directly from the molten state into a linear body with a thickness of IrIm or more or a diameter of 1mm or less, a small amount of Thin wires can be produced, and the solid solution state of the solid solution elements at high temperatures is brought to room temperature by rapid cooling and solidification, making it a supersaturated solid solution, so there is no need for the troublesome solution treatment as in the past. This greatly simplifies the process, reducing equipment costs,
Manufacturing costs are significantly reduced.

(b) The rapidly solidified thin wire body is only subjected to cold working of crystallites if necessary and then reduced to the final size, which greatly reduces the number of man-hours required for drawing even thin wires. .

（・） Heat treatment is advanced for aging precipitation.
In many cases, conventional methods cannot withstand high processing, and in such cases, repeated intermediate heat treatments are required, especially for strips, but since this is no longer necessary, the effect of energy saving is significant.

(d) It becomes a supersaturated solid solution by rapid cooling and solidification, and if intermediate heat treatment is performed, it may impair the softening properties of the final product; A product with good properties can also be obtained.

0→m, by cooling, a supersaturated state with fine grains is obtained, and by subjecting it to aging precipitation heat treatment, a product with high mechanical properties can be obtained.

Therefore, thin linear bodies with excellent strength, conductivity, surface properties, and softening properties can be easily and inexpensively manufactured using the wood starting method.
Conductors for wiring inside electronic equipment (e.g. 1-tio equipment, combinations,
It has a great effect when applied to wire coaters, etc.), winding conductors for electronic devices, and conductors for automobile wiring.

[Brief explanation of the drawing]

Figures 1 and 2 are from trees respectively] Method fruit & IL
There is a sectional view -C for explaining an example of the rapid solidification method used in the example. FIGS. 3(A) and 3(B) are diagrams respectively showing an example of the conventional method and an example of the method 1). 1 Molten metal, 2 Container, 3... Nozzle, 4 Roll, 5
...stripe body, 6 liquid fluid, 7 rotating body, 8... linear body. Figure 11 Figure 72 Figure 3 (A)
(b) Conventional tally
Unexploded IJJ method melting and casting ↓ (surface cutting, etc.) Temporary processing ■ Solution treatment ↓ (peeling processing, etc.) Cold processing (little intermediate annealing ↓ Cold processing ↓ Agent Patent attorney Hide Aoki Kunite Continuing Amendment (Method) 1 Patent indicated in the case 1982, 2012, 2012, 2003.Yo Application No. 118910 2 Name of the invention in issue 8A Method for producing aging precipitation type alloy 3 Person making the amendment Relationship to the case Patent applicant Address 5-15 Kitahama, Higashi-ku, Osaka Name (2+
3) Sumitomo Electric Industries Co., Ltd. Representative President Tetsu Kawakami Department 4 Agent address 7th floor, Shin-Nakajima Building, 1-9-20 Nishinakajima, Yodoyo-ku, Osaka (Telephone: Osaka 304-8803) Date of order Showa October 26, 1957 (Issue: Wakahi) 6 Sleeve [Inside the subject details of E, there is a column for a brief explanation of the drawing, and the drawing. 7. Contents of Supplementary iE (1) Specification, page 10, lines 12 and 13, [-Figure 3] -1 to 1-31] (a) and (b) are diagrams showing the steps of the manufacturing method;
Figure 2 shows an example of the method of the present invention. ``edited to''. (2) In the drawings, attach Figure 3 to a separate sheet if < riJ
'+l': l-ru. Figure 3 (a) (
B) Melting, casting ψ (Surface 1η cutting 7I heat) ψ Hot force 1'' Work φ Melting end f, place J meeting (with skin strip 1 caloem') ψ; ) ψ ;

Claims (4)

[Claims] (1) An alloy that accelerates aging precipitation behavior is directly rapidly solidified from a molten state into a linear body with a thickness of 1 mm or less or a diameter of 1 mm or more, and then heat treated for aging precipitation. A method for producing a characteristically aged precipitation alloy. (2) Rapid solidification, cooling rate 102deg, sec
, '-1 or more. (3) OfJ heat treatment after rapid cooling solidification, area reduction rate of 95%
Claim 1 or 2, which is subjected to the following cold working
A method for producing an aged precipitation alloy described in JJ4. (4) The aging precipitation type alloy contains Cr or Zr from 003 to
1%, and the balance is essentially copper. +fi1 The aging precipitation type alloy is a conductor for winding, and after heat treatment, it is enameled. A method for producing an aged precipitation type alloy.