SU867561A1 - Arc welding burner - Google Patents

Description

(54) MEET WELDING BURNER

The invention relates to welding production, in particular to electric welding in a protective gas environment, and can be applied in all areas of the industry.

Known burner with suction aerosol, in which the welding wires are located outside the suction path connected to the nozzle located on top of the welding torch 1.

Its disadvantage is the excessive weight of the torch with the suction of aerosol and the inconvenience in the work for the welder, especially when welding in hard-to-reach places.

Famous burner ID gas-electric welding with suction aerosol containing a curved tube} 1l supply of welding wire and protective gas, welding wires connected to the bent end of the tube, current-carrying mouthpiece, screwed into the free end of the tube, the nozzle for supplying protective gas concentrically covering the mouthpiece , a cylindrical suction nozzle located coaxially with the nozzle on top of it, as well as a suction hose, inside which

the tube and welding wires are located, connected at one end to the nozzle, and at the other end with a booster cable 21.

A disadvantage of the known burner is the complexity of the design and, as a result, its reliability and durability, as well as the impossibility of changing the distance from the end of the suction nozzle to the parts to be welded depending on the welding parameters, which impairs the suction of the welding aerulosis in individual modes.

The closest to the technical essence and the achieved effect to the proposed is a torch for arc welding melting 15 with an electrode in protective gases with suction aerosol from the welding zone, containing a curved tube for supplying the melting electrode and protective gas, at the end of which the mouthpiece is installed, as well as feed nozzle

20 shielding gas covering the mouthpiece and nozzle for sucking aerosol from the weld zone, covering the nozzle and mounted for movement relative to the nozzles 3J.

A disadvantage of the known torch is the injected. Bad protection of the weld. aaspasan ovca syvayutsdey nozzle clean nensg ozdovannom shgo protective gas that drive} -; t to the deterioration of the protection of svartyu uma and reduce welded joints.

The purpose of the invention is to improve the quality of seams by means of improvements (protection)); in the seam and increase the efficiency of the suction in the weld zone.

This goal is achieved by the fact that E; rope: i; co evil arc welding is asymmetrical by electro: in shielding gases with suction aerosol kz: welding head containing an ARROW pipe run: feeding the alag electrode and the protective electrode) -5 33, at the end which ustenovp; ; mundigtuk,:. also nozzle for supplying dried gas, nxisa

DIM1 OSHE MUIDTITUK NNADKL suction ;; ROSOL from SEARGSP, OHV :: -: 1B, IO; PU 0 COlilO

and ustaiovleinuk) with votmsp / giis -;:,::; : (- re5 / ;;:; 1: ;; um, refer to; 1 coz;: to; on — ru6: from otkanoploi ;; sleeve from ls1C-gronzo; 1IP - it i1 o gsrglostyyk ;; material, on a cohort: Snohtig Owk: K; R, / Go-coupling, Sh.Ptolisiga with Gizag /; -. n KPLMI jiJTii of the passage OTcaCbiBaCMOiO aerosol f nozzle closed on the coupling by means of:; cm, which nut with external diameter,, / /, 5 nozzle outer diameter, s. ::

him 1 iametr () M, pa) .6-2dg); ::: -: -;

diaile and height, 0.2. : M) | sucking off cell 1 asndk; 1, Okp :; l: -; ; v.-. sa aerosol from sol svapkk rlsgyu / ghp,::;. (Gokrio on the surface of liCpexash o; -: - ..,: The height of the JCE1 for the passage of airgase; - o:; t ;; ;; 2/3 d; 1in forming tshtil / avchchsssskoy: t about ace i;.:

POIbl, GROWTH 11 O :: SHEAR to the work room rnp ;; Y Dk;:; 1SI.

Pa figs. 1 shows rOpCJiKn, cfivn ;;;;;:.;,:;

in fig. 2 - a variant of the coupling with equal to the GMC:):; :: -; 1 by locating the windows for the arhod (;:, o; l-., Section of the node I a fet. F; Fn1.;;;; ::::; pc-: A-A in Fig. 2.

Torch for arc welding in aai: ;;. ;, ;; (for gases with suction, -, -.,: -, - ..;,: pipe 1 s ra; haa yi i

pa ll passage az;) oz (; l E transitional 2: vioryv DbiTi any {-th form - straight mono. oval, Kpyi ;; ofi, triangular and 1: e1-1mug1 estzenna (rorm - nr mougolIavgilla gakka in the after-cooker burner

OI PMI grow. apv / K on iiepoB attached to the bent

t, the CURRENT OF L-GLLSCHIGGGUK -1, n ;; epjy-i ::

into the free end of the tube I, dit-i / gri; -; -: ;; - / ::; 5. threaded bushing and wrapped ;;;; Tr-Dm - ;; - 1 and made of electrolysis; (1I01; IC ::;: .-; r1H: Riyal, cylindrical and chert mufg; - U with grooves 7 and windows 8 for 11-flow aerosol, HasHj-meiniyic on the sleeve 5, juice-p for supplying carbon dioxide 9, for: crsils 1 captive} ayk 10 on the coupling: 6. shchipdmlgskuyu suction nozzle And screwed: the clutch 6, suction hose 12, vnutrr; (-g: there are tube 1 and szvrochlae

SOGS

it becomes preferential in the zone of maximum aerosol release.

Example. The burner with suction aerosol is tested when welding in carbon dioxide under the following mode: welding current 400450 A, welding voltage 34-36 V, feed rate of electrode wire with a diameter of 2 mm of mark Sv-08G2S is 380 m / h The 8 mm gauge suture is 20-25 m / h and when performing a butt weld on a metal 12 mm thick is IS-22 m / h.

The efficiency of aerosol suction in this mode of welding of corner and butt joints is shown in Table. one.

The data in the tables show that the aerosol suction efficiency reaches up to 95%,

Note. The first squares of the numerators in columns 3, 4 and 7 correspond to corner welding, the second digits correspond to butt welding.

57.8 ... 60.0

23.3 ... 27.3

675616

The mechanical properties and chemical composition of the metal of the schv practically do not differ from those in welding without suction aerosol. Pore, slag inclusions and other defects in the seam is not detected.

The economic effect of the use of the burner with suction aerosol is obtained by reducing to 80-90% of the total volume of general gas, Q valve and is up to 4500 r. to one welding station per year.

The mechanical properties of the weld metal and welded joint are presented in Table. 2

15

The chemical composition of the weld metal when welding with suction and without it is presented in Table. 3

Table 1

table 2

6.1 ... 7.9

., 0

774 4.9

There are 0.10 1,190.40 0.020 0.020 0.014 O,

No0,, 150.36 -0.014 0.020 0.0120.08 0.0014

Note. The maximum permissible concentration of manganese oxides of tmk is 0.05 mg / m. Ф о рм ул and. and 3 on the line and 1. Torch for arc welding with a smooth electrode with shielding. X gases with suction an aerosol of the welding zone containing a bent tube for supplying a melting electrical / ia m protective gas, at the end of which a mouthpiece is installed, as well as a nozzle for supplying the incandescent gas, covering the mouthpiece and the nasa / isa for sucking aerosol from the weld zone, covering the nozzle and installed with possible displacement relative to the nozzle, about with the goal of improving the quality of welded IUBOB by improving Zi1, and Tbt welded 1iv; and noBbirLieHnH of suction suction from the weld zone, on the tube (), the plug of an open insulated hermestock from the material on which the waste coupler mounted with the slots and window for the suction of the sucked aerosol was mounted was attached to the open plug of the open groove and the window of the open suction aerosol; puncture) diametr, i i, -,; i 11 of the nozzle diameter, with a jiiiaMCTpOM- equal to 1.3 2.0 outer (nozzle diameter, v, height, rapal 0.2-0.5 suction and nozzle 2 Gorelke according to IL 1 about i l l p a p y with al tel: and -th windows wore coca azro: i) l from jQnbj welder located iomerio no p eek n transient muft 1 sopeuKK; then .l-2 ,, ot t and h and w w; C: to Tefvi, that the height of the windows of a liter of the passage of the aerosol is equal to 2/3 of the circumference of the cylindrical surface by the coupling from Lt; end with CrOjJOHI.I, PROTIEOPOLG) VNNO pmyo-him TOpiiy burner. Ishoch; Iki I1formatshi. ((perforated in listen-ic at tkspertiza G 1attent Shzoshp M, cl, R 2 K 5/16, 10.08,75. 2. Cite CnfA N 39f0860, cl 21U SJC, r) 3, Svil, etely: : ol1 ;, zios-i i) foray K 226445S, k ;;. In.: 3 K. I). | 02: S

Claims (2)

1.5 of the outer diameter of the nozzle, with an inner diameter equal to 1.5 2.0 of the outer diameter of the nozzle, and a height equal to 0-, 2 -0.5 of the height of the suction nozzle 1. A torch for arc welding with a consumable electrode in shielding gases with an aerosol suction from the welding zone, comprising a curved tube for supplying a consumable electrode and a protective gas, at the end of which a mouthpiece is installed, as well as a nozzle for supplying a protective gas, covering the mouthpiece and nozzle for suction aerosol from the welding aeon, covering the nozzle and installed with the possibility of movement relative to the nozzle, with the aim that, in order to improve the quality of welds by improving the protection of the weld and increasing the efficiency and suction from the weld zone, on the tube of the pipe. The sleeve is electrically insulating heat-resistant! with the material on which the adapter sleeve is mounted, made with grooves and windows for the passage of the suction aerosol, and the nozzle is fixed to the sleeve by means of a union nut with an outer diameter equal to 1 , 3, de 2. Burner according to π. 1 o, l and h a; o w the windows for suctioning the aerosol from cooking are arranged evenly along the adapter sleeve. According to 1Sh.12, the wiper is clear that the height of the windows for the passage of the aerosol is 2/3 of the length of the cylinder-forming surface of the adapter sleeve from the side opposite the burner groove.