TB0250 Fault Finding Welding Issues

Auteur avatarGareth Green | Dernière modification 30/09/2019 par Gareth Green en cours de rédaction

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Welding Issues - particularly with Y notches - can have a number of root causes outside the Stuga Machine. This checklist identifies a number of potential root causes that have been regularly known to occur

Technical Bulletin

TB Number: 250
Originator: Gareth Green
Machine: All
Date: 03/04/14
Circulate to: Service
Title: Welding Issues

Symptoms

Code Description
Windows incorrect size / bowed / not parallel
Weld not consistent top to bottom
Poor finish on ovolo
Dog leg on reverse butt weld
V notches too deep
Q-Cuts incorrect
Incorrect parts / profile
Coloured on White orientation incorrect
Scrapes / damage to profile surface
Weak welds
Windows Ok from one welder, no good from another

Actions / Checks

Code Description Tick
Profile storage – temperature
Bowed profile
Profile width within tolerance
Saw blade blunt / damaged
V notch blade blunt / damaged
Cutter blunt
Check clamping / accuracy / alignment
Check office link has correct codes
Heater plate temperatures
Profile have concave / convex face
Setting plates out of square
Setting blocks
Welding pressure
Inexperienced operator on welder
General Welder setup – has it been serviced
Profile not square / twisted / not parallel / symmetrical
Burn off on reverse butt
Timing on reverse butt welder
Profile slipping in weld cycle
Backfence on welder not square
Teflon on heater plates not changed
Pulling pressure on corner cleaner
Check same window on all different welders, especially butt welders

           

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