THE MOST EFFECTIVE WELDING FOR BUFFERING OR

UNDERLAYING CUSHION BASE ALLOY PRIOR TO FINAL HARDFACING

OVERLAY ON CARBON, LOW ALLOY & HIGH TENSILE STEELS.

COMPRESSIVE STRENGTH: EXCELLENT

ABRASION RESISTANCE: LOW

MACHINABILITY: YES

IMPACT RESISTANCE: GOOD

MAGNETIC DEPOSIT: YES

LAYERS OF WELD DEPOSIT: MULTIPLE

APPLICATION:        

For buffering, cushioning or underlaying base alloy for final hardfacing overlaying or deposit on low, medium and high carbon, low alloy high tensile strength steels.  It is not be used for joining.

The term BUFFER LAYER is used to describe the presence of an intermediate

deposit between the base metal and the actual deposit.  In many cases, it is

both desirable and necessary to use BUFFERWELD No.1 before welding a

hardfacing overlay deposit such as the following cases:

HARDFACING ON A SOFT BASE METAL FOR HIGH LOAD SERVICE:

When a hardfacing deposit is welded on a soften base metal, there is a tendency

for it to “sink in” under high loading.  To overcome this, a strong & tough buffer

layer is deposited onto the base metal prior to hardfacing.

HARDFACING COMPONENTS SUBJECT TO HEAVY IMPACT AND OR FLEXING:

When a component is subjected to heavy impact and / or flexing there is the

possibility that relief checks which are common in the higher hardness range of

hardfacing deposits will act as stress concentrators and propagate through the

base metal, particularly where the base metal is a high strength steel.  The use of

BUFFERWELD NO.1 to provide a suitable buffer layer between the base and

hardfacing deposit will overcome this problem. 

HARDFACING OVER PARTLY WORN PARTS:

In many instances, parts which have been hardfaced and put into use, wear

evenly and when they need hardfacing again, there are areas of the original

hardfacing deposit still existing.  For fractured and very hard deposits, it is

necessary they removed by grinding & gouging prior to re-hardfacing.  If this is

not possible, the use of BUFFERWELD NO.1 will secure the existing hardfacing

and provide a tough base underlay alloy for subsequent hardfacing deposit.

TYPICAL ANALYSIS OF ALL WELD DEPOSIT:

HARDNESS:

AS WELDED: 27-30 HRC (280-300 Hv) ALL WELD DEPOSIT

RECCOMENDED CURRENTS: Ampere (AC/DC+)

WELDING POSITIONS:

FLAT, FILLET, VERTICAL UP, HORIZONTAL, OVERHEAD

EXPORT Packing: 5Kg plastic container, then 4 5kg containers in master carton box

LOCAL Packing:  5Kg paper box in shrink wrapped plastic

Other special packaging can be accommodated as per request.