PL3249B1

PL3249B1 - Material for electrical resistances.

Info

Publication number: PL3249B1
Application number: PL3249A
Authority: PL
Filing date: 1920-12-20
Publication date: 1925-12-31

Description

Metale dla elektrycznych oporów po- wiiiutiy miec mala przewodnosc, maly spól- czynnik temperatury i mala sklonnosc do utleniania takze przy obciazeniu az doi zairu ciemno-czerwonego i powinny dawac sie latwo obrabiac, a w szczególnosci ciagnac na zimno. Tym wamnkoni, bez uzycia rzadkiego i kosztownego niklu, czyni za¬ dosc materjal oporowy, stanowiacy przed¬ miot niniejiszego wynalalzku, którego cecha znamienna jest to, ze sie sklaida ze stopu zelaza lub stali, który zawiera w sobie krzem lub glin. Zawartosc tych sklado¬ wych moze sile wahac w dosc szerokich gra¬ nicach. Górna granica dla obu zdalje sie znajdowac przy 5%. Obok Si i Al, które jednak zawsze równoczesnie sa obecne, by uzyskac nietylko latwa zdolnosc do ob¬ róbki, lecz równiez maly spólczynnik tem¬ peratury i opornosc przed utlenieniem przy obciazeniu az do zaru ciemno-czerwo- nego, mozna uzyc jeszcze innych dodat¬ ków, by przez nie wplynac korzystnie na poszczególne pozadane wlasciwosci. Mia¬ nowicie rozciagliwosc materjalu wzralsta przy malym dodatku miedzi. Przez maily dodatek niklu mozna rozciagliwosc pod¬ wyzszyc. Przez ten dodatek wplywa sie równiez korzystnie takze i na inne wlasci¬ wosci stopu, jako materjalu oporowego.Takze moga byc zastosowane dodatki manganu, chromu i cynku. Przez podgrze¬ wanie materjalu podczas ciagnienia,, zalez¬ nie od ilosci i rodzaju dodatków, do tern-peraittiry 106 do 300° moze byc rozciagli¬ wosc w znacznym stopniu podwyzszona.Zaleznosc oporu wlasciwego stopów zela- za-krzemu-glinu od zmiennej zawartosci Si i Al jest uwidoczniona na nastepujacej ta¬ beli: Próba Nr 1. 2. 3. 4. 5. 6. 8. h \ aK ; * i K* 10. 11. c 0,22 0,22 0,19 0,19 0,19 0,20 0,17 ii °'13 Cu 0,115 0,10 Ma 0,28 0,27 0,26 0,26 0,25 0,25 0,29 0,27 0,68 0,76 Si 3,23 1,66 1,86 1,41 2,56 3,56 2,64 0,47 1,78 2,03 Al 1,82 2,46 4,20 1,55 4,20 3,- 1,53 1,80 2,10 3,20 Al i Si 5,05 4,12 6,06 2,96 6,76 6,56 4,17 2,28 Opornosc w) 0,64 0,52 0,70 0,46 0,80 0k85 0,70 0,51 0,59 0,78 PLMetals for electrical resistances must have a low conductivity, a low temperature factor and a low tendency to oxidize also under load up to a dark red zone and should be easy to work with, especially cold pull. Without the use of a rare and expensive nickel, it is the resistance material which is the subject of the present invention, the characteristic feature of which is that it is made of an iron or steel alloy containing silicon or aluminum. The content of these components may vary within fairly wide limits. The upper limit for both seems to be at 5%. Apart from Si and Al, which are always present at the same time, however, in order to obtain not only easy workability, but also a low temperature factor and resistance to oxidation under load up to a dark red heat, other additions can be used. in order to have a positive effect on the individual desired properties. The tensile strength of the material increased with little copper addition. By e-mail, the addition of nickel can be increased. This additive also favorably influences other properties of the alloy as the resistance material. Additions of manganese, chromium and zinc can also be used. By heating the material during drawing, depending on the amount and type of additives, the elongation of tern-peraittira 106 to 300 ° can be significantly increased. The dependence of the specific resistance of iron-silicon-aluminum alloys on the variable content Si and Al are shown on the following table: Test No. 1. 2. 3. 4. 5. 6. 8. h \ aK; * and K * 10. 11.c 0.22 0.22 0.19 0.19 0.19 0.20 0.17 ii ° '13 Cu 0.115 0.10 Ma 0.28 0.27 0.26 0 , 26 0.25 0.25 0.29 0.27 0.68 0.76 Si 3.23 1.66 1.86 1.41 2.56 3.56 2.64 0.47 1.78 2, 03 Al 1.82 2.46 4.20 1.55 4.20 3. - 1.53 1.80 2.10 3.20 Al and Si 5.05 4.12 6.06 2.96 6.76 6.56 4.17 2.28 Resistance w) 0.64 0.52 0.70 0.46 0.80 0k85 0.70 0.51 0.59 0.78 PL

Claims

Claims 1. A material for electrical resistances consisting of an iron or steel alloy, characterized by having both Si and Al.

2. Material for electric resistances according to the provisions of 1, characterized by the fact that its content of Si and Al does not exceed; for each of these components 5%.

3. Material for electrical resistances according to claim 1, characterized by the fact that in addition to Si and Al, it also contains a small amount of Cu.

4. Material for electrical resistances according to claim 1 - 3, characterized by the fact that the Si, Al and Cu block also contain small amounts of nickel.

5. Material for electrical resistances according to claim A composition according to any one of claims 1-4, characterized by the fact that besides Si, Al, Cu and, where appropriate, nickel, also chromium, manganese, zinc or boron, or several of these elements simultaneously.

6. Procedure for pulling the material for electric resistances according to the conditions. 1, characterized by the fact that the material, in order to increase its elasticity, is heated during drawing to a temperature of 100 ° to 300 °. Oberschlesische Eisen- Industrie Actien- Gesellschaft fur Bergbau und Hiittenbetrieb. Deputy: M. Kryzan, patent attorney. Print by L. Boguslawski, Warsaw *, PL