B?HLER FOX DCMV伯樂焊條

B?HLER FOX DCMV伯樂焊條

Description
Basic coated electrode for highly stressed joint and production welds on GS-17 CrMoV 5-10
type high temperature cast steel used in the construction of steam turbines and valve casings.
Approved in long-term condition up to +600 °C service temperature.
High creep rupture strength thanks to the C, Cr, Mo and V-content. High fracture toughness,
low hydrogen content, good welding characteristics. The deposit is heat treatable. metal-
recovery approx. 115 %.
Approvals and Certificates
TüV-D (6077.), UDT, LTSS, SEPROZ
base Materials
similar alloyed high temperature steels and cast steels
1.7706 G17CrMoV5-10
Operating Data
re-drying if necessary: ? mm L mm amps A
300 - 350 °C, min. 2 h 4.0 450 130 - 180
electrode identification: 5.0 450 180 - 230
FOX DCMV 9018-G E Z CrMoV1 B
Preheat and interpass temperatures 300-350 °C, stress relieving > 20 °C below the tempering
temperature of the cast steel, but not less than 680 °C.
Mechanical Properties of All-weld metal
(*) u a v
yield strength R e N/mm 2 :  720 680 (≥ 530) 500
tensile strength R m N/mm 2 :  1000 770 (≥ 620) 630
elongation A (L 0 = 5d 0 ) %:  12 19 (≥ 317) 20
impact work ISO-V KV J + 20 °C: 22 90 (≥ 347) 155
(*)  u untreated, as-welded
a annealed 680 °C/8 h/furnace down to 300 °C/air
v quenched/tempered 940 °C/0.5 h/oil + 720 °C/12 h/furnace down to 300 °C/air
Typical Composition of All-weld metal
C Si Mn Cr Mo V
wt-%  0.12  0.35  0.9  1.35 1.0 0.22