Process Parameter Importance // Hpdc // Hpdc Machine //

Join HPDC Pathshala Membership for structured and practical die-casting learning:    / @hpdcpathshalasds   How do you select the correct plunger diameter for a High Pressure Die Casting machine? In this practical HPDC Pathshala video, Bharat Sharma explains how to select the correct plunger size from the available machine-manual options, such as 50 mm, 60 mm or 70 mm. The calculation connects casting weight, total shot volume, runner and overflow volume, biscuit thickness, effective injection stroke, shot-sleeve volume and target Fill Ratio. The video also explains how plunger diameter influences available casting pressure, machine capability, gas porosity and shrinkage-related defects through P–Q² principles. 📚 Topics Covered ✅ Plunger-diameter options in the machine manual ✅ Converting casting weight into casting volume ✅ Total shot-volume calculation ✅ Estimating runner and overflow volume ✅ Biscuit-volume calculation ✅ Relationship between plunger diameter and biscuit thickness ✅ Effective injection-stroke calculation ✅ Shot-sleeve volume calculation ✅ Definition and importance of Fill Ratio ✅ Plunger-diameter calculation for a target 50% Fill Ratio ✅ Effect of plunger diameter on available casting pressure ✅ Effect of plunger diameter on sleeve Fill Ratio ✅ Connection with gas porosity and shrinkage defects ✅ Plunger selection using P–Q² principles ⏱️ Questions Answered 0:05 How do you select the correct plunger diameter? 1:06 How is total shot volume calculated? 3:07 How are runner and overflow volumes estimated? 4:44 How are biscuit volume and plunger diameter connected? 5:23 How is effective injection stroke calculated? 7:39 What is shot-sleeve Fill Ratio? 9:40 How is plunger diameter calculated for 50% Fill Ratio? 13:20 How does plunger diameter affect pressure and Fill Ratio? 13:45 How can plunger selection affect porosity? 👨‍🏭 This Video Is Useful For • HPDC process engineers • Die-casting engineers • Die and tooling designers • Production engineers • Quality engineers • Machine-selection teams • NPD engineers • Tool-room professionals • Manufacturing students The practical lesson is simple: Do not select a plunger diameter only because it is available in the machine manual. Calculate the complete shot demand, effective stroke, target Fill Ratio and pressure-flow requirement, and then validate whether the machine can deliver the required process conditions. Move from trial and error to scientific HPDC process control. Presented by: HPDC Pathshala Speaker: Bharat Sharma Website: [www.hpdcpathshala.com](http://www.hpdcpathshala.com) Keep Learning Till Death. #HPDC #PlungerDiameter #FillRatio #ShotVolume #CastingPressure #PQ2 #DieCasting #HPDCCalculation #HPDCPathshala