- Hardfacing Electrodes - PHILHARD 300R

PHiLARC Products

Certification of Quality

PHILHARD 300R

AWS SPECIFICATION: NONE

JIS SPECIFICATION : DF2A-300-R

OTHER SPECIFICATION: NONE

I. APPLICATIONS:

Hard surfacing of gears, shafts and wheels.

II. DESCRIPTION:

NHF-260B is a titania type electrode which is designed to put prime importance on good usability and good machining property. It is suitable for reclaiming the light worn-out parts. Quenching after machining is also possible.

III. NOTES ON WELDING:

Preheating is unnecessary in general. But in the case of build-up welding of large cast steel and low alloy steel, need to preheat at 150-200ºC.
The groove repairing is prone to slag inclusion so adjust the holding angle of the electrode.
Dry the electrodes at 80-120ºC for 30-60 minutes before use.

IV. TYPICAL CHEMICAL COMPOSITION OF WELD METAL (%):

C	Si	Mn	Cr
0.11	0.37	0.66	2.2

V. HARDNESS OF WELD METAL:

Welding Condition		Vickers (Hv)	Rockwell (H_RC)	Shore (Hs)
As Welded	Continuous Welding	220-260	16-24	32-37
As Welded	Preheating -Interpass Temp. 150ºC	245-285	21-28	36-41
After Hardening	850ºC Water Cooling	390-450	40-45	54-60

VI. WELDING POSITIONS: FLAT, OVERHEAD, HORIZONTAL

VII. SIZES AVAILABLE AND RECOMMENDED CURRENTS (AC or DC - ):

Size	Dia.	3.2	4.0	5.0	6.0
(mm)	Length	350	400	400	450
Current Range		90-130	120-180	170-230	210-280

TEST RESULT

The information contained or otherwise referenced herein is presented only as “typical” without guarantee or warranty, and Industrial Welding Corporation expressly disclaims any liability incurred from any reliance thereon. Typical data and Test results for mechanical properties, deposit or electrode composition and other properties were obtained from a weld produced and tested according to prescribed standards, and should not be assumed to be the expected results in a particular application or weldment. Actual results will vary depending on many factors, including, but not limited to, weld procedure, plate chemistry and temperature, weldment design and fabrication methods. Users are cautioned to confirm by qualification testing, or other appropriate means, the suitability of any welding consumable and procedure before use in the intended application.

philarc-philhard 300r.pdf