JPH10146715A - Parting off method for cylindrical ring material - Google Patents

Abstract

(57) [Problem] To provide a parting-off method for separating a ring-shaped product from a cylindrical ring material made of a difficult-to-process alloy material or the like in a short time. SOLUTION: A cylindrical ring material 1 is rotated by a rotating mandrel 2 with a flange 6 or the like, and if necessary, a parting roll 3 is pressed against the ring material 1 while being heated by a heating device 5 to have a predetermined width. Separating the ring product.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a parting method for separating a ring-shaped product having a predetermined width from a cylindrical ring material suspended on a rotating mandrel.

[0002]

2. Description of the Related Art Conventionally, superalloys (Ni alloys), Ti alloys,
Ring-shaped products made of difficult-to-process alloy materials such as high-alloy steel are formed by bending a bar-shaped material into a ring and joining both ends by welding to form a ring material, or by forging a round or square billet to form a ring material. As shown in FIG. 6, the cylindrical ring material produced by the above method is hung on a rotating mandrel 2 and spinned by a spinning roll 8 with or without heating by a heating device 5 such as a high-frequency heating device. When the width is increased and the diameter is increased, the mandrel 2 is hung on the rotating mandrel 2 as shown in FIG.
With or without heating by the heating device 5, the diameter of the ring material 1 is increased by performing ring rolling with the ring roll 4 to produce a ring material 1 having a required width and diameter. A ring-shaped product was manufactured by cutting it into five pieces.

[0003] However, when the ring material made of the difficult-to-work alloy material is cut by machining, that is, by parting off with a lathe, it is possible to cut the ring material by 20 to 20 times per actual cutting time.
It required a long time of 40 minutes.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide a method for separating a ring-shaped product from a cylindrical ring material made of a difficult-to-process alloy material in a short time.

[0005]

In order to achieve the above object, in the method for parting off a cylindrical ring material according to the present invention, a cylindrical ring material is suspended on a rotating mandrel and the ring material is rotated. Then, a parting roll is pressed against the ring material to separate a ring-shaped product having a predetermined width.

In order to achieve the above object, in the method for parting off a cylindrical ring material according to the present invention, a cylindrical ring material is suspended on a rotating mandrel, and the ring material is rotated. This is to separate a ring-shaped product having a predetermined width by alternately pressing a parting roll and a ring roll against a material. In addition, the ring-shaped product referred to in the present invention includes a ring-shaped crude product in the process of manufacturing the ring-shaped product in addition to the completed ring-shaped product.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to FIGS. In the first embodiment of the present invention, as shown in FIG. 1A, a cylindrical ring material 1 made of a difficult-to-machine alloy material is suspended on a rotating mandrel 2 with a flange portion 6 and the like. Further, if necessary, the ring material 1 is heated by a heating device 5 such as a high-frequency heating device, and a parting roll 3 is pressed against the ring material 1 in this state as shown in FIG. Is to separate the ring-shaped product of width.

One example of an apparatus which can be used in the first embodiment of the present invention is a cylindrical ring material 1 which is a workpiece as shown in FIGS. 1 (a) and 1 (b). A mandrel 2a provided with a flange portion 6 at one end thereof, which rotates while supporting the member from the inside, and a heating device 5 for heating the ring material 1
And a parting-off roll 3 that separates the ring material 1 into a plurality of ring-shaped products. The cylindrical material 1 as a workpiece is suspended on a rotating mandrel 2 and rotated. In this case, the parting roll 3 is moved forward while being heated by the heating device 5 and cut off.

In the second embodiment of the present invention, as shown in FIGS. 2 (a) to 2 (d), a cylindrical ring material 1 is suspended on a rotating mandrel 2 with a flange portion 6 and the like. Further, if necessary, the part is heated by a heating device 5 and a parting groove 7 is provided by pressing the parting roll 3 against the ring material 1 in this state ((b) in FIG. 2), and then the ring material 4 is used. Ring roll processing ((c) in FIG. 2) and processing in which the parting roll 3 is inserted into the parting groove 7 of the ring material 1 and pressed to further deepen the parting groove 7 ((d) in FIG. 2) ) Is repeated a required number of times (one or more times) to separate a ring-shaped product having a predetermined width.

One example of an apparatus which can be used in the second embodiment of the present invention is a cylindrical ring material 1 which is a workpiece as shown in FIGS. 2 (a) to 2 (d). A mandrel 2 having a flange portion 6 at one end for rotating while supporting from the inside, a heating device 5 for heating the ring material 1, and a parting roll 3 for separating the ring material 1 into a plurality of ring-shaped products And a ring roll 4 provided coaxially with the parting roll 3. The cylindrical mandrel 2 is a rotating mandrel. The parting-off roll 3 is advanced while heating at 5 to perform parting-off processing, or the ring roll 4 is moved and then advanced to perform ring-rolling processing.

The material of the cylindrical ring material to which the present invention can be applied may be any metal material as long as it can be subjected to hot or cold ring roll processing. That is, Nimonic80
A, Ni-based alloy which is a superalloy such as various types of Inconel, various types of Monel, various types of Hastelloy, 6Al-4V-Ti, 8A
Ti alloys such as 1-1Mo-1V-Ti, SUS30
4. It is particularly effective to perform cutting on a material that is difficult to cut by machining, such as heat-resistant austenitic steel such as SUS321 and SUH660, and high-Cr ferritic heat-resistant steel such as SUS430.

In the parting-off method of the present invention, the heating temperature for heating the cylindrical ring material is 900 to 1100 for a super alloy and 600 to 980 for a Ti alloy.
C., 600-1000 C. for high alloy steels.

[0013]

【Example】

Example 1 SUS304 (C: 0.04%, Si: 0.55%, M
n: 0.98%, P: 0.02%, S: 0.017%,
Ni: 9.83%, Cr: 19.5%, balance substantially F
The billet of e) was forged, machined, and then ring-rolled to produce a cylindrical ring material having an inner diameter of 700 mm, a thickness of 20 mm, and a width of 60 mm. This ring blank 1 was cut off under the following conditions by using the apparatus shown in FIG. 1 using the parting roll 3 shown in FIG. Parting-off processing conditions: Processing temperature: 1000 ° C. Ring material peripheral speed: 0.5 m / sec Parting-off speed: 0.6 mm / rotation Parting-off depth: 20 mm

As a result of this processing, FIGS. 4A and 4B
Two ring-shaped products (crude products) 1a shaped as shown in
And 1b. The time for this parting-off process was 2 minutes and 30 seconds. Thereafter, both end surfaces and the inner and outer circumferences (black portions in (a) and (b) of FIG. 4) were cut to have an inner diameter of 700 mm.
Since it took 35 minutes and 0 seconds (including the time for mounting on a cutting machine) to form two ring-shaped products having a thickness of 20 mm and a width of 20 mm, the total was 37 minutes and 30 seconds. A ring material having the same material and shape was cut off with a lathe to produce two ring-shaped products, and it took a total of 60 minutes and 0 seconds (including the time for mounting on a cutting machine). From these results, the method of the present invention was 25 minutes 0 seconds less. This indicates that the present invention is excellent.

Example 2 A material having the same component composition as in Example 1 and a processing method having an inner diameter of 6
A cylindrical ring material having a thickness of 36 mm, a thickness of 22 mm, and a width of 60 mm was manufactured. Using a device as shown in FIG. 2 using a ring roll 4 and a parting roll 3 shown in FIG. 3, ring rolling and parting were alternately performed under the following conditions. These operations are performed twice to obtain an inner diameter 7 having a shape as shown in FIGS. 5 (a), 5 (b) and 5 (c).
Three ring-shaped products (crude products) 1a, 1b and 1c having a thickness of 00 mm, a thickness of 20 mm and a width of about 20 were produced.

Parting-off condition: Cutting temperature: 1000 ° C. Ring material peripheral speed: 0.5 m / sec Parting-off speed: 0.6 mm / rotation Number of times: 3 times Parting-off depth: 8.0 mm : 22mm

Ring roll processing conditions: Processing temperature: 1000 ° C. Ring material peripheral speed: 0.5 mm / sec Number of times of reduction: 3 times Reduction amount of one time: 0.65 mm Total reduction amount: 2.0 mm

The time of the two parting-off operations was 8 minutes and 0 seconds in total, and thereafter, both end faces ((a) of FIG.
(B) and (c) are cut to obtain an inner diameter of 7
It took 55 minutes and 0 seconds (including the time for mounting on a cutting machine) to make three ring-shaped products of 00 mm, thickness of 20 mm and width of 13 mm, so the total was 63 minutes and 0 seconds. Was. The same material with an inner diameter of 700 mm and a thickness of 20
A ring material having a width of 55 mm and a width of 55 mm is cut off twice with a lathe to obtain an inner diameter of 700 mm, a thickness of 20 mm, and a width of 1 mm.
Total 105 minutes 0 to make 3 ring products of 3mm
Seconds (including time for mounting on the cutting machine) were required.
From these results, the method of the present invention was 42 minutes 0 seconds shorter. This indicates that the present invention is excellent.

Although the above embodiment was implemented with SUS304, other metal materials, other high alloy steels, Ni alloys,
The present invention can be applied not only to a difficult-to-process alloy material such as a Ti alloy, but also to a material that is not so difficult to process. Further, in the above-described embodiment, the working is performed by hot. However, a material that can be worked cold can be worked by cold.

In the above embodiment, the mandrel is
Although the one provided with the flange 6 at one end is used,
Depending on the material, it is also possible to use a mandrel without the flange 6. Furthermore, the above embodiment
It was carried out with a ring material manufactured by forging,
The same can be achieved by using a ring material manufactured by welding.

[0021]

According to the present invention, the above-described configuration enables
Since the separation can be performed in a very short time, there is an excellent effect that the manufacturing time can be significantly reduced as a whole, including the time for the subsequent machining. In addition, when cutting is performed by performing both parting-off processing and ring roll processing, an excellent effect is achieved in that the amount of cutting by subsequent mechanical processing is reduced, and the amount of wasted material is reduced.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram for explaining a first embodiment of a method for producing a ring-shaped product of the present invention.

FIG. 2 is an explanatory diagram for explaining a second embodiment of the method for producing a ring-shaped product of the present invention.

FIG. 3 is a front view of a main part of the parting roll used in the embodiment of the present invention.

FIG. 4 is a cross-sectional view for explaining a ring-shaped product (crude product) manufactured in Example 1 of the present invention.

FIG. 5 is a cross-sectional view for explaining a ring-shaped product (crude product) manufactured in Example 2 of the present invention.

FIG. 6 is an explanatory diagram for explaining a rear spinning process.

FIG. 7 is an explanatory diagram for explaining ring roll processing.

[Brief description of reference numerals]

 DESCRIPTION OF SYMBOLS 1 Ring material 1a, 1b, 1c ... Ring-shaped product 2 Mandrel 3 Parting-off roll 4 Ring roll 5 Heating device 6 Flange part 7 Parting-off groove 8 Spinning roll

Claims (2)

[Claims] 1. A cylinder characterized in that a cylindrical ring material is suspended on a rotating mandrel, the ring material is rotated, and a parting roll is pressed against the ring material to separate a ring-shaped product having a predetermined width. For cutting off ring-shaped ring material. 2. A ring-shaped product having a predetermined width is cut by placing a cylindrical ring material on a rotating mandrel and rotating the ring material, and alternately pressing a parting roll and a ring roll on the ring material. A method for parting off a cylindrical ring material.