JPS58157542A - Working method of high co alloy material - Google Patents

Abstract

PURPOSE:To obtain easily products of high quality by cold-working a high Co alloy material at reduction of specified range per one time. CONSTITUTION:Cold working is performed on an alloy material containing >=50wt% Co one or more time at reduction of 5-15% per each time. In this case, if total reduction by cold working exceeds about 50%, working becomes very difficult and hardening cracks occur. Accordingly, it is desirable to limit the total reduction within about 50%. In working of large material such as cold swager, grooved roller working etc. total reduction of about 35-50% at 10-15% per each time is desirable. In case of cold wire drawing, total reduction of 30-45% at 5-10% per each time is desirable.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for processing alloy materials, and particularly relates to a method for processing so-called high-00 alloy materials containing 50% or more of Oo. O of
High 00 alloy materials containing o have escaped much attention in recent years, as they are useful for example in Targera F materials, but cold working is said to be extremely difficult, and for this reason, conventional Create one-of-a-kind items using a finishing touch or casting method.
I was just doing it.

However, for applications where high-00 alloy materials are mainly used in the form of wires or plates, the conventional method of hot forging or swager processing would require complicated and expensive processing. In addition to being harmful, it may also degrade the II characteristics of the alloy material, so there has been a desire to improve the processing method.

SUMMARY OF THE INVENTION An object of the present invention is to provide a novel processing method capable of solving the above-mentioned drawbacks of the prior art and realizing a high-quality 000 alloy material product.

In order to achieve the above object, the present invention has developed an alloy material containing 50% or more of Oo by weight, with a processing degree of 5 to 1 per time.
5%, and is characterized by being subjected to cold processing at least once. In the present invention, if the total working degree by cold working exceeds 60%, processing becomes extremely difficult.
Since hardening cracks and the like occur, it is desirable that the total degree of working be 50% or less.

In addition, in the present invention, when machining large materials such as cold swager 1 Mizota machining, it is preferable that the total machining rate is in the range of 35 to 50% at 10 to 15%/time. The actual machining rate is 5-10%/time, and the total machining rate is 3ON46.
The present invention will be described in detail with reference to Examples.

Example weight ratio: 80% Oo-! An alloy material ingot of O%M1 was forged to obtain a material of 18 φ x 300 wL. I love this material! After heating for 30 minutes at medium zogo ~1080 CX, hot swaging was carried out and spread to -φxt during intermediate aging for 3 to 5 minutes. Swager - After completion 11. inside xoooc x 5
It was annealed for minutes and allowed to cool. Then cut both ends and then -φx
Five samples of goomz were prepared, pickled, and inspected to ensure that there were no vertical cracks, curling, or other flaws.

Initial processing was performed using the following three methods.

(11fk El-ru machining to -φ → 4R-φ (total machining rate 50%) (2)! $11tl-ru machining to -φ → &9 simple φ (total machining rate 57.7%) ( 3) By swager machining, -φ → -φ is added to IC with a total machining degree of 30B. After that, annealing is performed, and then by swager machining again, &
Machining to 6■φ (total machining rate 4&j1%) However, the above (1
) to (3), λ- processing & (l pass reduction) was set to 6 to 10%, and 4 to 8 @ processing was performed.

The sample obtained by the processing method (11) above had hardening cracks in some parts, but was relatively good.The sample obtained by the processing method (2) above had countless hardening points over the entire length. On the other hand, the surface obtained by the processing method (3) above had good surface properties. However, the cold swager described in (8) above may cause
This method does not have this fear and has the advantage of being able to perform more preferable processing.

Next, use the method (3) above to remove the remaining approximately 1^ sample.
Perform cold swager processing on 53111φXA and
It was annealed at 1000 to 950C for 10 minutes in I medium and cooled.

This sample was further wire-drawn to yield 7.8-1&s1%/
It was processed 6- with a processing degree of -, resulting in &6-l X t.

After annealing the sample of 14- to the Q-elements, which are the total working degree of 4 and 6% at this time, a line is drawn again to ji, Qlm-, where the total working degree is 450 whispers at the working degree of 4%/time of Banfu ~ 1B. It was processed very well.

Incidentally, in the above explanation, the present invention is limited to the Oo-1 alloy.It goes without saying that the present invention is not limited to this alloy.As detailed above, the present invention has conventionally been applied to High Q0 alloy materials, which were thought to be difficult to process easily and with good quality, can be easily processed into wires, plates, etc. by cold working, which is extremely effective industrially.

Indication of the procedural amendment type case 1982 Patent Application No. 38962 Title of the invention Relationship with the case of those who overturn the processing method supplement for high Q0 alloy materials Patent applicant address 2-1-2 Marunouchi, Chiyoda-ku, Tokyo Name <
508) Hitachi Metals Co., Ltd. Telephone: Tokyo 03-284-4642 Contents of amendment in the "Detailed Description of the Invention" section of the specification
Corrected to 020-1150℃.

Claims (1)

[Scope of Claims] A method for processing a high-00 alloy material, which allows cold working of an alloy material containing Oo with a weight ratio of 50% or more at a working rate of 6 to 15%/time. 2. A method for processing a high Q0 alloy material according to claim 1, wherein the total degree of working by the cold working is within a range of 50 hiss or less. & Scope of patent claims wI! A method for processing a high 00 alloy material in the fs 1 or 2 power distribution method, characterized in that the cold working is cold drawing and the total working degree is in the III range with a working degree of 45% or less. .