Electron Beam Welding (BARCOMP®)
Theis uses electron beam welding technology extensively for welding high speed tool steel to high strength low alloy backing steel for the saw industry. The same technology is used in fabrications in these industries:
Stainless steel and various nickel alloys.
Monel to low alloy steel for doctor blade applications.
Hardened high carbon steels of dissimilar thicknesses.
Carbon steels of dissimilar shapes, which are difficult to fabricate using conventional shaping technology.
Typical Material Hardness (as delivered)
H.S.S. Edging: HV 350 max (15N 78 max)
E.B. Weld: HV 420 max (15N 82 max)
Backing material (D6A): HV 250 max
(15N 70 max)
Edging: Fully spheroidized with primary carbide sizes of 1 to 3, with some large alloy carbides. Free from carbide segregation and total decarburization (free ferrite). Partial decarburization of 0.00040" (0.011 mm) maximum per side is allowed. No carburization is allowed.
E.B. Weld: Typical annealed cast microstructure. Small uniform carbides of sizes 1 to 2 in an alloy ferrite matrix.
Backing: Spheroidized with occasional areas of fine lamellar pearlite. Partial decarburization of 0.0005" (0.013 mm) maximum per side allowed. No total decarburization (free ferrite) is allowed.
No misalignment of edge and backing, overfill or undercut of the weld, and no excessive porosity, blowholes or cracks.
Typical lightly cold rolled dull surface, free from excessive scratches or roll marks. Material is lightly coated with rust preventative oil. We can also provide material with ground surface.
The backing edge shall be a square edge with chamfered corners (corner radius) of .002 - .010" (.05 - .25 mm) or blunt round. The H.S.S. edge shall be #1 sharp square with maximum chamfer of .003" (.076 mm)