Pignone in acciaio inox #100 | Trasmissione in acciaio inox extra pesante testata ANSI 100 UT

Why Material Integrity Testing Comes Before Machining

At the #40 or #50 pitch scale, an internal void or lamination in the stainless billet might never affect performance — the cross-sections are small enough and load paths redundant enough that a subsurface defect in an off-load zone has little practical consequence. At the #100 pitch, with 31.75 mm chain and roller loads that can exceed 20 kN per tooth in heavy-duty applications, this calculation changes fundamentally. A lamination at the tooth root cross-section can initiate fatigue cracking under cyclic load without any visible surface indication, producing sudden tooth fracture that jams a conveyor, damages downstream equipment, or — in the worst case on an overhead drive — causes an uncontrolled load drop. This is why our Pignone Ever-Power #100 in acciaio inossidabile production starts with billet inspection, not machine setup. Every bar over 120 mm diameter is ultrasonically tested per ASTM A388 before a single cut is taken. Only UT-cleared material progresses to the shop floor.

PMI Testing and Full Material Traceability

Positive material identification (PMI) is a rapid XRF scan that confirms the elemental composition of each billet against the declared grade. It takes under 60 seconds per piece and eliminates the risk of grade substitution — an issue more common than most buyers realise in the SS long-products market, where 304 and 316 bars look identical and the grade difference is detectable only by chemistry. Our PMI protocol tests every individual billet, not just a sample from each delivery lot. The test record, along with the mill certificate and UT clearance, is retained against the billet heat number and cross-referenced to the finished sprocket serial number on the production traveller document that ships with each order. That chain of traceability — from raw bar to boxed sprocket — is the documentation that satisfies the most stringent OEM quality audits.

Solution Annealing for Maximum Corrosion Resistance

After rough machining, the #100 SS sprocket blanks undergo solution annealing: heating to 1,050–1,100 °C followed by rapid water quench. This dissolves any chromium carbide that may have precipitated during hot-working of the original billet, producing a fully homogenous austenitic microstructure with maximum chromium in solid solution — and therefore maximum corrosion resistance throughout the cross-section. This treatment is standard on all our #100 SS sprockets and is documented on the production traveller.

Specifiche tecniche

Applications Where #100 SS Is the Only Viable Answer

Componenti per sistemi di azionamento per impieghi gravosi

• Catena a rulli ANSI 100 SS — 316 SS, single and duplex strand
• Catena in acciaio inox serie Heavy 100H — extra-thick outer plates for shock and overload
• Boccole coniche QD di grandi dimensioni — SDS 4040–5050 series, stainless versions available
• Custom 316 SS Shafts — turned with keyways and locking collars
• Strumenti per l'allineamento delle ruote dentate — Kit di allineamento laser per una precisa regolazione della linea catena

Testimonianze dei clienti

Esplora tutto gamma di pignoni in acciaio inossidabile oppure scopri di più sulla nostra azienda su Pagina Chi Siamo.

Domande frequenti