nihonweldnihonweldnihonweld

Printer Friendly Layout
NHF-950
AWS Specification: NONE
JIS Specification:

DFWA-700S

Other Specification:

NONE

I. APPLICATIONS:

Hard surfacing of shovel teeth, cutter knives of dredger and speed mullers, etc.

II. DESCRIPTION:

NHF-950 obtain a weld metal which contains large quantity of dispersed tungsten carbide and withstands heavy soil impact-free abrasion. Machining as-welded condition is impossible.

III. NOTES ON USAGE:

  • Usually over 200ºC preheating and 500~600ºC postheating are required.

  • Take care of the increase of cracking tendency when used for over triplelayer welding.

  • Underlaying with low hydrogen type electrodes (N-7016 or N-18) is required.

  • Dry the electrodes at 150~200ºC for 30~60 minutes before use.

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

 

C

Si

Mn

Cr

Mo

W

2.78

0.29

3.22

0.10

0.12

47.30

V. HARDNESS OF WELD METAL: 60-69 HRC (700-950 Hv)

VI. WELDING POSITIONS: FLAT, FILLET, VERTICAL UP, HORIZONTAL, OVERHEAD

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

 

Size (dia. mm)

3.2

4.0

5.0

Length (mm)

350

350

350

Current Range (Amp)

90 - 130

120 - 180

170 - 230

 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.