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MIG BRAZING GUIDELINES FOR 1,500 MPa STEEL PARTS
Refer to the body repair manual for complete information:
• MIG brazed joi
nt locations are specified in the body
repair manual.
• A single or double hole MIG braze may be specified
in
the body repair manual depending on the tensile
strength of the parts being joined.
• The size and number of holes is critical to achieving
adequate
joint strength.
• A pulsed MIG welder MUST be used. Refer to the
equipm
ent manufacturer’s instructions for welder
voltage and current set-up.
• Photos at right show the difference in results
betw
een pulsed and non-pulsed MIG brazing.
Welding Precautions and Information
REPAIRING 1,500 MPa STEEL PARTS
Observe these precautions when repairing 1,500 MPa steel parts:
• NEVER attempt to straighten damaged 1,500 MP
a steel
parts because they may crack.
• 1,500 MPa steel parts MUST be replaced at factory seams
us
ing squeeze-type resistance spot welding (STRSW).
• MIG brazed joints should be used
ONLY in locations
not accessible by a spot welder.
• To assure adequate weld tensile strength, always set
t
he spot welder to the specifications provided in the
body repair manual.
• NEVER perf
orm MAG welding on 1,500 MPa steel.
The heat generated during welding will significantly
reduce the strength and structural integrity of
1,500 MPa steel parts.
• This photo shows tensile st
rength test results of
welded 1,500 MPa steel. The 1,500 MPa steel fractured
first, because the welding heat reduced its strength
far below 590 MPa.
• For more information, refer to “Hot S
tamp (1,500 MPa)
Parts Welding Specifications” in the body repair manual.
This panel is made of Ultra High Strength Steel
(UHSS/1,500MPa/ USIBOR) and must be installed as
a complete part. No sectioning allowed. Ultra High
Strength Steel requires special welding equipment,
procedures and settings. See the welding section of
the appropriate body repair manual. Failure to use the
proper equipment or follow the proper procedures can
result in an unsafe repair.
Important Information
© 2013 Honda Canada., Inc. – All Rights Reserved
(20 Seiten)
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