NC-100

Specification

Description

• NC-100 is a pure nickel electrode for welding cast iron primarily used for the reclamation and repair of casting defects, machining errors, shinkage cavities, gas blow holes, and voids resulting from defect excavation of grey iron castings
• Manufactured using pure nickel core wire and gives a fully machinable weld deposit
• Designed to produce a very fluid molten pool with good wetting properties, making it particularly suitable for the filling of casting defects
• Weld deposit is free from hard zones, cracks, and porosity
• Excellent tensile strength and ductility for cast iron

Application

• Repair, reclamation, and build-up of cast iron parts, grey cast iron and malleable (blackheat iron)
• Auto blocks and heads
• Cylinder walls
• Motor exhaust ports
• Impeller rings
• Valve seats
• Cast iron dies
• Defective castings
• Gear box housings
• Pump castings
• Machine parts
• Machining errors
• Joining steel to cast iron

Remarks

Prior to welding remove all traces of rust, oil, paint, sand inclusions and scale

Use NIHONWELD NFG gouging/cutting electrodes for the removal of defects and the preparation of the cracked area

Repairs can be made with or without preheat, depending on component size and thickness

For large sections preheating in the region 250ºC-300ºC will facilitate improved machinability of the weld repair

The molten pool exhibits good fluidity which allows the operator to direct the electrode readily into corners whilst filling shrinkage cavities

The slag properties are such that the ?slag-over-slag? technique can be applied whilst filling deep blowholes and excavations

Joints or cracks should be grooved if parts are more that 5.0 mm thick till root is 3.25 mm to 5.0mm thick

Use lowest current practical, depositing short intermittent beads about 25mm to 5.0mm

Proceed slowly so that the work does not become too hot

For every heavy castings it is best to cool in sand, asbestos, or mica

Technical Data

TYPICAL CHEMICAL COMPOSITION OF ALL WELD METAL DEPOSITS (%):

C	Si	Mn	Ni	Fe
0.90	0.65	0.27	Bal.	0.62

 

TYPICAL MECHANICAL PROPERTIES OF ALL WELD METAL DEPOSITS:

Tensile Strength N/mm2 (KSI)	Elongation %	Hardness HV (HRB)
356 (51.60)	20	140 - 160 (75 - 80)

 

SIZE AND RECOMMENDED CURRENT RANGE: AC, DC (+)

DIAMETER (mm)	2.5	3.2	4.0	5.0
LENGTH (mm)	300	350	350	350
Current Amp	50 - 80	70 - 110	100 - 140	130 - 170

Welding Positions:	FLAT, FILLET, VERTICAL UP, HORIZONTAL, OVERHEAD
Approvals:	N/A

NOTE:

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.