DE8010068U1 - Composite material in strip or plate form - Google Patents

Description

Hanau, April 11, 1930 ZPL-Zw / W

¥. C. Heraeus GmbH, Hanau (Main)

- * sa4 utility model registration

"Composite material"

The invention relates to a composite material, in particular a metallic multilayer composite material, which is shown in Operation is exposed to a high magnetic field. In an application In particular for field coils in nuclear fusion systems, however, the materials used not only have to be practically non-magnetic, but also withstand temperature fluctuations in the range from about -200 ° C to + 100 ° C.

For this purpose, composite materials have been created from two metallic partners, one of which is as tensile strength as possible and the other is a good electrical conductor. As a partner with high tensile strength, z. B. Certain types of steel are in question, while copper or certain copper alloys can be used as a partner of high conductivity.

A direct association of such partners is because of the different Deformability of these materials at the limit

Hanau / Main, 7 January 1981 ZPL-Dr.Hn/S

Neue Seite 5 to G 80 10 Ο68.1 question the strength of the bond.

On the other hand, since great lengths and thicknesses are required for electromagnetic reasons, the partners can only difficult to connect at all of their interfaces, which then leads to the loosening of the partners of the network, in particular applies this is the case with roll cladding.

The object of the invention is to provide a composite material create and show a suitable manufacturing process for this, which both the electromagnetic conditions of use meets the strength requirements even at very different temperatures.

This object is achieved by the composite material characterized in claim 1.

The subclaims contain further refinements of the invention.

An embodiment of the invention is shown purely schematically in the accompanying drawing and in the following Description explained.

Show it:

FIG. 1 the base body or carrier pre-plated (semi-finished product), FIG. 2 a multilayer composite material.

Description of an embodiment

A) Manufacture pre-double: Steel 1.4300 - CuNi30Fe (DIN 2.0882)

1. Mill off the steel plate 1 mm on both sides.

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2. Brush CuNiSOFe and St 1.4300 well.

3. Plating: between 3 x 30 mm thick, to approx. 950 ° C Put 1000 t in the heated steel plates at the top and bottom and let them cool. Then the package again with 3 x 30 mm thick steel plates at approx. 950 ° C above and below with_ Compress 1000 t and allow to cool.

4. Rolling: At a block temperature of 150 C-200 C, carry out the first stitch decrease from 49.8 to 36 mm.

5. Diffusion annealing: Cool down 1050 ° C for 1 hour (quenching) with forming gas 95/5.

6. Rolling: from 36 to 23.8 mm in several stitches.

7. Annealing: Cool (quench) 1050 ° C for 1 hour with forming gas 95/5.

B) Produce composite material: Cu - CuNi30Fe - St 1.430 CuNi30Fe - Cu (or Cu alloy with a high Cu content).

1. Brush all 3 plates well.

2. Plating: between 3 x 50 mm thick, to approx. 950 ° C Press heated steel plates above and below with 500 t and allow to cool. Plate before pressing 61.8 mm thick, 55 mm thick after pressing.

3. Rolling: From 55 mm to 30 mm. Stitch decrease 3 mm. Push the composite into the roller and close the whale gap.

4. Annealing: Cool 750 ° C with forming gas 95/5 for 1 hour (scare off).

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5. Rolling: From 30 mm to 18 mm. Push the composite into the roller and close.

6. Annealing: ^{Cool 750 0} C with Pormiergas 95/5 for 1 hour (quench).

7. Trimming on a milling machine.

8. Rollers: From 19 mm to 9.5 mm (finished size). Stitch decrease 1.5 mm.

9. Cutting to the finished size.

10. Annealing at 400 ° C for 4 hours, cooling with forming gas 95/5 (scare off).

In FIG. 1, the front doubl6 consists of on the steel girder 1 or base body with Cu alloy rails applied on both sides 2 (DIN 2.0882) with a thickness of about 90 μm.

In Figure 2, the composite consists of on the Vordoubl6 after FIG. 1 Cu layers 5 applied on both sides. The initial thickness of the package of individual strips or plates was overall larger than 50 mm, here about 55 mm »The individual strips were: Steel girder 1 larger than 20 mm, here about 50 mm, width about 120 mm, length about 9000 mm and more. Cu strips or plates 5 about 20 mm thick, same width and length as beam carrier 1. The finished composite then had a total thickness of 5 mm, here at least 6 mm.

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summary

Composite material for magnetic coils or similar purposes of high strength even with large temperature differences. Despite large dimensions, a high bond strength in the entire interface area with the help of at least one intermediate layer between the metallic partners of the network. Plating is a suitable manufacturing process, hot roll cladding is preferred.

Claims (2)

Hanau / Main, January 7th I98I ZPL-Dr.Hn/S New claims to G 80 10 O68.I "Composite material" 1./Composite material in strip or plate form is exposed to a high magnetic field, containing an austenitic steel base body with at least one copper or copper alloy coating, characterized by an intermediate layer of a non-magnetic copper alloy between the coating and base body with a copper content of - 50% and a layer thickness of = 10 , um, wherein the composite consists of individual strips or plates which have a width of = 100 mm and a length of = 1000 mm and at least a few mm thick. 2. Composite material according to claim I _1, characterized in that the intermediate layer consists of a copper-nickel alloy. 3 composite material according to claim 2, characterized in that that the intermediate layer is made of a copper-nickel-iron alloy consists. k. Composite material according to one of the preceding claims, characterized in that the intermediate layer is applied on both sides of the base body. 5 composite material according to claim 4, characterized in that that the pads are applied on both sides of the intermediate layer and thus a multilayer composite body form.