SU716752A1 - Core wire electrode composition - Google Patents

Description

The invention relates to the reconciliation of steels, in particular, to materials used in the mechanized welding of steels in protective rajax, and can be used in various industries of the industry related to the preparation of welded structures. Known 1 composition of powdered wire containing the following components, wt.%: Marble Fluorite sputtering Titanium dioxide Ferrotitanium Ferromanganese Ferrosilicon Nickel Liquid glass Remaining Steel sheath Known 2 composition of flux-cored wire containing the following components, wt.%: Marble1 - 1.5. Fluoride spat4-6 Guitar dioxide4-5 Nickel1.8-2.5 Chromium17-19 Sheath steel Elsexon However, when welding with known wires in carbon dioxide, it is not possible to obtain the required characteristics of the non-welded metal. The fracture of large samples made of weld metal is fragile and has practically no fibrous component, which adversely affects the performance of the steel under high dynamic loads. The amount of fiber component cannot be increased by any subsequent technological measures. In addition, the known cored wires have unsatisfactory welding and technological properties. In order to improve the welding and engineering properties of the wire and increase the amount of the fibrous component in the weld metal, the solvent additionally contains zirconium dioxide, cerium oxide, molybdenum at the following ratio of the components of the wire, w / s: Marble3-5 Fluorocarbide 4-6

, F} zooks inxaiia

0.5-2

fiiiKejib 0.5-3

/ Chrome 0.5-1.5

Zirconium oxide 0.05-0.2

Oksp cer

oz;

Molybdenum

Rest.

Sheath steel The shell contains 0.05–1% algohm. The proposed composition allows to produce at least 40% of the fiber fiber in the junction metal (in the fracture of large samples). The composition of the charge of the flux-cored wire was selected after careful research using the methods of mathematical experiments.

The offered flux-cored wire was chased by the following tecnolop: preparation of the charge (grinding, sifting, control); zannenis ilkhtoy seamless pipe from steel 08U; reduction of the pipe in order to keep the shiksh; dragging a filled pipe to the desired nappicHoro wire diameter of 1.2–1.6 mm.

The use of a pipe made of 08U steel, which makes it possible, improves the purity of the weld metal and the plating properties of the upholstered metal. ,

In order to reduce the separation of powders of the charge due to their different specific during the blasting process, the slag-forming part of the Yaychta: the pressed flux of the desired cocTajja is melted, wt.%:

Fluke ashat35

/ Titanium dioxide35

Ekly kaly number 1 of

Okie

20 9 1

carbonate catcher Zirconium oxide Cerium oxide

Luch1Sh1m variant of the composition of the powder ProBolok turned out to be a composition with an average content of its ingredients, wt.%

Fluorspar5.0

Titanium dioxide 5,0

Marble4,5

Idconcon dioxide 1.0

Cerium oxide 0.1

Chrome .0.5

Nickel1.0

Molybdenum1,0

Steel shell

08 K) 90.9

The wire of this composition melts evenly, with NiajTbiiM spray. Slag covers the seam evenly and easily packs the neck from the surface of the asha. For the backing is good, there are no cracks in the weld metal. 8 fracture & 1x samples amount of fiber 50-60 fuio fracture.

Wire, the composition of Koiopoil oguschataet the lower limit of content to} 1gredieitov, weight./f;

Fluid spar4.0

Dzuokns; gchtaya4,0

Mpaiviop3,0

Dioxide Shch1-rko1Sh 0.5

Cerium oxide 0.05

Chrome 0.5

Nickel0.5

Mol5; Bden 0.5

Shell of steel5

0810 WAITING

At the top of the wire, made on the upper limit of the content of ingredients, wt.%: Fluoric slat6.0

Titanium dioxide} a6,0

Marble5.0

Zirconia 1.5

Oxide) cerium 0,2

Chrome3.0

Gshkel2.0

Molybdenum3.0

Steel shell

0810 Else

detects secondary welding and technological properties. The content of the fiber component in the fracture of large samples is 40-45%.

A half-hem of fiber dzlom in the weld metal is a necessary condition for the normal operation of the alloy steel construction and provides an increase in the working ability of the structure in business.

With the presence of a fibrous fracture of the metal weld seam, the heavily loaded structures, especially those undergoing dynamic effects, are much more resistant to fracture. Metal; g, having a fibrous fracture, has a high-tastic characteristics of the symbol.

The presence in the composition of powdered fiber of DEZ / OXIDE zirconium, cerium oxide, chromium, and molybdenum together with the rest of the components allows to form

the structure of the metal and shred the necessary fiber trough in the fracture of welded nrob.

The use of welding flux-cored wire of the proposed composition allows welding materials with high welding-technological properties when welding high-strength alloyed steels in closed gases and to ensure high content of the welding fiber fracture (not less than 4Cffc), which guarantees the required workability of the welding designs.

The use of one of the proposed wires also allows the welding process of these CTEjiesi at different spatial positions, replacing the pysnyj-o arc welding.

5 716752

Claims (2)

1. The composition of poroscov wire, prgnu-Chrom 0.5-3 Essentially for welding alloyed steels in the center of carbon dioxide 0,5-1,5 closed gases consisting of cerium steel sheath-g 0.05-0.2 ki and powder mixture containing Molybdenum 0.5-3 marble, fluorspar, carbon dioxide, Steel cladding Ostalygoe nickel chromium, characterized in that 2. The composition according to claim 1, wherein with the aim of increasing the welding process that Obolds contains algamipga 0.05-1% of properties of the wire and higher number of oT the entire mass of the shell, fibrous component in the weld metal, tallest additionally contains dioxide sources 1shformshsh, zirconia, cerium oxide, molybdenum in the following-ing into account during examination the stem of the components of the wire, USSR Copyright Certificate No. 312717, weight.%: . , 15 lo-i. At 23 K 35/368, 04/28/70. Marble 3-52- USSR Copyright Certificate No. 315546, Fluorspar 4-6kl. 23 K 35/368, 07/17/1970 (prototype). Nickel 0.5-2