1 / 14

TB 1353 (TB 130/17) CLAD METAL BY EXPLOSIVE WELDING/ROLLING TECHNIQUE

TB 1353 (TB 130/17) CLAD METAL BY EXPLOSIVE WELDING/ROLLING TECHNIQUE О .L. Pervukhina 1 , I.V. Saikov 1 , A.Yu. Malakhov 1 , I.V. Denisov 1 , A.I. Zaitsev 2 , I.A. Korms 2 , A.V. Knyazev 2 , O.G. Chernyshev 3 , and А . А . Bykov 3

fai
Download Presentation

TB 1353 (TB 130/17) CLAD METAL BY EXPLOSIVE WELDING/ROLLING TECHNIQUE

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. TB 1353 (TB 130/17) CLAD METAL BY EXPLOSIVE WELDING/ROLLING TECHNIQUE О.L. Pervukhina1, I.V. Saikov1, A.Yu. Malakhov1, I.V. Denisov1, A.I. Zaitsev2, I.A. Korms2, A.V. Knyazev2, O.G. Chernyshev3, and А.А. Bykov3 1Institute of Structural Macrokinetics and Materials Science RAS, Russia 2 I.P. Bardin Central Research Institute of Ferrous Metallurgy, Russia 3 Institute of Bimetallic Alloys, Russia

  2. The main task is to get thermostatic bimetal TB 1353 (TB 130/17) BrassL63 (63%Cu 37%Zn) + Invar 36N (64%Fe 36%Ni)3mm+3mm • Requirements to material for equipment engineering: • full-strength connection • minimum wave formation in a boundary zone Applicability: in devices aviation and rocketry, communication systems, exact instrument making, electronics and electrical equipment.

  3. Three ways of material production were applied: 1. In one stage: Explosive welding Brass 4mm + Invar 3.5 mm 2. In two stages: Explosive welding Brass 12mm + Invar 8mm & rolling to final thickness 3. In two stages: Surface modification of brass billet by Explosive welding Brass 12mm + Invar 1.5mm & making package for rolling (+ Invar 8mm) & rolling to final thickness rolling scheme explosive weldingscheme

  4. 1 In one stage: Explosive welding Brass 4mm + Invar 3.5mm BRASS low strength INVAR Dimensions: 300х800 mm initial site at distance of 500 mm from an initial site

  5. Cladding mode: 2. V≈470 m/s: γ ≈ 12° Wave height 0,45 mm; Wave period 1,1 mm BRASS INVAR Elements distribution

  6. Cladding mode: 3. V≈400 m/s; γ ≈ 11° Wave height 0,3 mm; Wave period 1,1 mm BRASS INVAR Elements distribution

  7. Microhardness of interface Cladding mode: 2. V≈470 m/s: γ ≈ 12° Cladding mode: 3. V≈400 m/s; γ ≈ 11° INVAR BRASS BRASS INVAR After heat treatment 300°C, 1 h (GOST 10533) INVAR INVAR BRASS BRASS

  8. 2. In two stages: Explosive welding Brass 12mm + Invar 8mm & rolling to final thickness 12+8x200x300mm BRASS INVAR Cladding mode: V≈560 m/s, γ ≈ 11° R= 0,75 Wave height ≈ 200-300mkm Wave period 0,5 mm Thickness ratio BRASS/INVAR=1,5

  9. After rolling to final thickness 6,3х200х540мм Thickness ratio BRASS/INVAR=1,2

  10. Microhardness of interface After explosive welding After explosive welding + rolling INVAR BRASS INVAR BRASS Mechanical tests

  11. Bending tests: OK

  12. 3. Surface modification of brass billet by Explosive welding Brass 12mm + Invar 1.5mm & making package for rolling (+ Invar 8mm) & rolling to final thickness researches in process…

  13. Conclusions: • Explosive welding provides the high strength in thermobimetal. But such bimetals can't be applied in special details of space equipment because of a wavy form of an interphase. • The new technological scheme used to product thermostatic bimetal of the TB 1353 brand (TB 130/17). It includes explosive welding both the hot and cold rolling. • The combined technology provides the high strength of connection and form interphase border which allows to use bimetal in special details of space equipment. • It is necessary to correct initial thickness of plates in the range of ratios 1,2 – 1,3 to receive ratio of layer’s thicknesses 1:1. • The strip of thermobimetal produced by combine technology possesses necessary extent of cold deformation (50%), provided by specifications and technical documentation.

More Related