IV. Key Technical Points of Stainless Steel Welding
(Core professional aspects)
Welding Consumable Matching
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Welding wire or electrode must be compatible with the base material
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Example: AISI 304 base material matched with ER308L filler
Heat Input Control
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Proper control of heat input is critical
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Prevents intergranular corrosion and weld metal embrittlement
Shielding During Welding
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Adequate argon shielding is required
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Prevents oxidation and discoloration of the weld seam
Post-Weld Treatment
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Pickling, passivation, or polishing after welding
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Restores corrosion resistance and improves surface appearance
V. Common Welding Defects & Countermeasures
(Key points for customer confidence)
| Common Issue | Cause | Countermeasure |
|---|---|---|
| Weld discoloration | Insufficient shielding gas | Improve argon protection |
| Weld cracking | Improper material or welding procedure | Control heat input |
| Deformation | Localized heat concentration | Segment welding / symmetrical welding |
| Reduced corrosion resistance | No post-weld treatment | Pickling and passivation |
VI. Typical Quality Requirements for Export Custom Parts
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Continuous welds with no porosity or cracks
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Uniform weld appearance with minimal spatter
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When required, the following inspections and finishing processes can be applied:
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PT / UT / VT inspection
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Weld grinding, polishing, pickling and passivation
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VII. Key Takeaway
(Ideal closing statement for PPT)
The essence of stainless steel welding is not just to “make it hold”,
but to achieve the right balance between strength, appearance, and corrosion resistance.
Post time: Jan-26-2026
