Learn how SJ601 particle distribution may affect flux feeding, arc coverage, gas escape, recovery, fines, and submerged arc welding stability.
SJ601 is supplied in granular form, and particle-size distribution influences how the flux feeds, covers the arc, and behaves in recovery equipment.
What Can Excessive Fines Cause?
Too many fine particles may:
- Increase dust
- Reduce air permeability
- Affect gas escape
- Change feeding behavior
- Increase material loss in recovery systems
- Alter the apparent bulk density
What Can Oversized Particles Cause?
Excessive coarse material may feed unevenly, provide irregular arc coverage, or create problems in narrow delivery systems.
Why Does Recycling Change Distribution?
Pneumatic recovery, repeated handling, crushing, and screening can break particles and increase fines. Slag fragments may also enter the recovered material if separation is ineffective.
How Should Particle Size Be Controlled?
- Purchase the specified grade.
- Protect bags from damage.
- Use suitable screens.
- Remove slag and foreign material.
- Monitor fines generation.
- Avoid excessive mechanical handling.
- Define limits for recovered flux.
- Keep different grades separate.
Does the Product Image Confirm a Mesh Size?
No. A photograph can show that the granules look generally uniform, but it cannot establish a numerical mesh or millimetre range. Those values require a technical specification or sieve analysis.
Dayang Welding can confirm available SJ601 particle specifications when preparing a quotation or technical submission.
