CHINA ELECTRODE AND MACHINERY CO., LTD.
¡@

Hard Surfacing Arc Welding Electrodes

CH-W

JIS DFWA-S

Description¡G

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

Application :

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

Instructions for welding :

  1. Preheating over 300¢J is required and postheating after welding is desirable about 600¢J.

  2. Build-up in lattice shape or string in general.

  3. Dry the electrodes at 80 ~ 120¢J for 30 ~ 60 minutes before use.

Typical weld metal properties¡G (Weld Metal Analysis)

Carbon ¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K 3.00
Manganese ¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K 1.50
Silicon ¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K 0.60
Chromium ¡K¡K¡K¡K¡K¡K¡K..¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K.¡K¡K. .. -----
Molybdenum ¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K.. -----
Vanadium ¡K¡K..¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K.. -----
Tungsten ¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K. 45.0

Hardness of weld metal:

650 ~ 800 V.H.N. ( HRC: 59 ~ 67 )

Available diameter and recommended operating ranges¡G
¡@

¡@ F. & H. ¡V fillet ¡@
3.2 X350 m/m
4.0 X400 m/m
5.0 X400 m/m		   90 ~ 130 Amps
140 ~ 180 Amps
190 ~ 250 Amps

 

Type of power¡GA.C. or D.C.E.P.
Approvals¡G
Send mail to cemc@ms24.hinet.net with questions or comments about this web site.
Last modified: 2007-10-09