Submerged Arc Welding (SAW) क्या है?
Submerged Arc Welding जिसे संक्षेप में SAW कहते हैं, एक फ्यूजन वेल्डिंग तकनीक है। इसमें electric arc को एक फ्लक्स पाउडर के नीचे जलाया जाता है। यह फ्लक्स इलेक्ट्रोड और वर्कपीस के बीच का आर्क कवर कर लेता है। नतीजा यह होता है कि वेल्डिंग स्पार्क्स और धुआँ बाहर नहीं आता और वेल्डिंग बहुत क्लीन और स्ट्रॉन्ग होती है।
SAW Welding कैसे काम करता है?
- Electrode Wire लगातार फीड होती है।
- उस पर Granular Flux Powder डाला जाता है।
- Arc फ्लक्स के नीचे जलता है और मेटल पिघल कर वेल्ड जॉइंट बनाता है।
- फ्लक्स ऑक्सीजन और नाइट्रोजन को रोकता है जिससे वेल्ड डिफेक्ट-फ्री होती है।
Submerged Arc Welding के फायदे
- Strong Welding: यह तकनीक बहुत ही मजबूत और डीप पेनिट्रेशन देती है।
- Smooth Finish: कोई स्पार्क, धुआँ या स्लैग नहीं होता।
- High Productivity: Continuous process होने से स्पीड ज्यादा मिलती है।
- Quality Weld: Defects और cracks कम बनते हैं।
SAW का उपयोग कहाँ होता है?
- Shipbuilding Industry
- Oil & Gas Pipelines
- Heavy Steel Structures
- Pressure Vessels & Boilers
- Bridge Construction
निष्कर्ष
Submerged Arc Welding (SAW) एक आधुनिक और शक्तिशाली वेल्डिंग तकनीक है। अगर आपको strong, clean और defect-free joints चाहिए, तो SAW सबसे बेहतर विकल्प है। इसका उपयोग खासतौर पर उन जगहों पर किया जाता है जहाँ हाई स्ट्रेंथ और प्रोडक्टिविटी दोनों ज़रूरी होती हैं।
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