HARDFLEX ®

wear resistant materials

Vidaplate® -CLAD PLATE

(with wear resistant overlay)

Grade:  V31

material data

Grade

V 31
service life multiple of carbon steel
approx. 28
basematerial
highstrength steel
tensile strength at 20°C
420 - 500 N/mm²
yield strength at 20°C
280 - 400 N/mm²
initial hardness
63 HRc
max. service temp.
650 °C

sizes

Grade

V 31
thickness, total
mm
27
24
19
18
17
thickness, cladding
mm
17
12
9
10
7
cladded area
mm
1524 x 3048
plate size*
mm
1524 x 3048
weight               approx.
kg/m²
216
192
152
144
136

Grade

V 31
thickness, total
mm
15
14
12
10
thickness, cladding
mm
7
6
6
4
cladded area
mm
1524 x 3048
plate size*
mm
1524 x 3048
weight               approx.
kg/m²
120
112
96
80

* special sizes on request

general description:

Extreme strong carbides, uniformly distributed in a tough, austenitic steel matrix, result in a material with a service life multiple of approx. 28 times higher than mild steel. The carbide overlay is fused to a highstrength steel backing plate.

The overlay is free of nickel.

stress relief cracks

The relief cracks clearly visible across the plate are simply shrinkage cracks and do not reduce the performance of the hardfacing. They are in the hardfacing overlay only and do not progress into the base metal.

cutting

Plasma cutting is the recommended method. It is preferable to cut from the base steel side as it gives a clean edge on the backing plate.

forming

overlay inside:
min. radius 75 mm for 6 mm overlay on 8 mm backing plate
min. radius 150 mm for 9 mm overlay on 10 mm backing plate

relief cracks should be across to the line of curvature .

overlay outside:

min. radius 500 mm.

relief cracks should be parallel to the line of curvature .

Enlarged relief cracks after the forming are filled with our HF-tubular hardfacing electrodes.

welding:

The highstrength steel base plate can be welded with standard mild steel rods. HF-tubular hardfacing electrodes have to be used to overlay mild steel welds in abrasion areas.

applications:

V 31 can be used for

Power Industry
Mining and Quarrying Industry
Feeder wear plates, wear plates in primary, secondary and tertiary crushing plants, dump truck trays, shovel bucket linings, bulldozer blade wear plates, etc.
Steel Industry
Ore, coke, limestonehandling, sinter wear plates, coal crushing wear plates.
Paper Industry
Pneumatic wood chip handling, cyclones.
Sugar Industry
Cane crushing wear plates, chutes.
Glass Industry
Nickel free wear plates.

drilling

Holes are made by plasmacutting , spark erosion and by welding of bushes. Normal drilling is not possible.

fastening methods

-permanent joint:
Fillet weld or Plug weld for permanent installations for static and dynamic use.

-detachable connection:
screwing by:
-pre-machined mild steel insert with the desired bolt size dimensions is welded into plasma cut hole on the backing side.
-spark eroded countersunk holes with cladded HF-bolts.

in addition welded thread inserts or thread studs (nelson) can be used.

surface finish

Very smooth surface (to prevent product "hang-up".

Grinded surface can be delivered as special type (i.e. for slides).

HARDFLEX ® and VIDAPLATE® are registered trademarks

The data shown above is based on long lasting experience in the manufacturing and use of wear resistant materials. As there are many unknown possible parameters and conditions in practice, which may limit standard performance, it is requested that the user runs practical tests. Except as expressly stated, HARDFLEX 's liability, expressed or implied, is limited to the published selling price of our defective item.

© 2002 by FDI® - Design

032E-HFV31/2-04