Technical Knowledge Center
Practical notes on carbide dies, punch pins, thread rolling dies, mould life, material behavior, and case-specific production decisions.
Latest technical notes
Each article is written to help evaluate tooling choices, production risk, and the questions to ask before requesting a quotation.
Case study on precision cold forming of Apple charger plug pins: wear resistance systems, profile compensation, and mirror finishing for high-volume production.
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Case study on Volkswagen stainless steel internal Torx door lock bolt production: stainless steel forming difficulty, die steel selection, polishing, mirror EDM, and die life improvement.
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A short field note from Jungu Precision Mould at the 2026 Shanghai International Fastener Industry Expo, covering booth discussions around carbide dies, punch pins, thread rolling…
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Thread rolling creates stronger fasteners through cold-forming. Learn about enhanced strength, fatigue resistance, and 15-20% material savings vs cutting.
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Compare roll threading vs cut threading: grain flow, surface finish, tensile strength, production speed, and material waste differences explained.
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Thread rolling for lead screws increases hardness by 30%, improves fatigue resistance, achieves 8-24 micro-inch surface finish, and saves material.
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Roller thread dies use cold-forming to produce stronger threads. Learn how they differ from cutting tools, their operation principles, and key benefits.
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Nut forming dies achieve 95%+ material utilization through chipless cold forging, reducing waste and cost compared to traditional machining.
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Stamping is the dominant method for welding nut production, achieving 100+ parts per minute with minimal waste and improved material strength.
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