Design for Castability (DFM)

Practical rules to turn CAD into sound castings: wall-thickness targets, parting and draft, ribs/bosses/fillets, core strategy and hot-spot control. Each post shows modulus balancing and typical casting–machining compromises.

Design for Castability (DFM) · Hot Spots & Feeding

How to Selecting Leak-Tight Ductile Iron Pressure Parts: Graphite Morphology, Leakage Risk and NDT

Ductile Iron for Pressure Parts Who this helps: Design Engineers / Buyers specifying pressure-tight iron castings—pumps, valve bodies, compressors, hydraulic housings—where leakage risk, durability and inspection cost matter.What you’ll get: a material selection path (gray/grey vs ductile vs ADI), how graphite morphology drives leak paths, DFM rules that prevent porosity/shrinkage at seals, a copy-paste drawing…
Core Design · Design for Castability (DFM)

How to Design Core Prints & Vents & Coating for Iron Castings

Core Design For Iron Castings Who this helps: Design Engineers / Buyers responsible for gray/grey & ductile iron castings with internal cavities, thin webs or long core spans.What you’ll get: practical core-print sizing rules, venting layouts, coating (wash) DFT targets, copy-paste drawing notes, and failure-mode checklists that cut scrap. Prepared by YB Metal Solution. Share…
Design for Castability (DFM) · Solidification & Cooling

Solidification and Cooling Rates: How Section Modulus Drives Microstructure

solidification cooling rates section modulus Who this helps: Design Engineers / Buyers optimizing gray/grey iron, ductile iron and ADI parts for strength, toughness, leak-tightness and machinability.What you’ll learn: how section (casting) modulus controls cooling rate → microstructure → properties, copy-paste formulas you can use on a napkin, and geometry/process levers to kill hot spots before…
Design for Castability (DFM) · Wall Thickness

How to Set Minimum Walls for Ductile Iron (By Grade)

minimum wall thickness for ductile iron Who this helps: Design Engineers / Buyers specifying ductile (nodular/SG) iron housings, hubs, brackets and pressure parts.What you’ll get: realistic minimum wall (t_min) by grade × process × part size, quick design rules (ribs/fillets/draft), and drawing notes that prevent misruns and scrap. Prepared by YB Metal Solution. Share your…
Design for Castability (DFM) · ibs, Bosses & Fillets

How to Set Fillet Radii for Iron Castings: 7 Proven Radius Rules That Work

Guided by YB Metal (Suzhou, China) — fillet radii for iron castings: green sand, resin/no-bake & shell molding under one roof, with machining, simulation-led gating/risers, and traceable QA. Excerpt: Smart fillets, radii, and transitions lower stress concentration, improve fill/feeding, and reduce machining and scrap. Use these 9 proven rules, copy-paste tables, and notes you can…
Design for Castability (DFM) · Wall Thickness

How to Set Iron Casting Wall Thickness the Smart Way

YBmetal has provided our customers with a wide range of thin-walled and thick-walled castings. Engineer’s rulebook for gray/grey and ductile iron: minimum iron casting wall thickness by process, uniformity ranges, rib/fillet/boss ratios, transition design, and machining stock & draft. Includes mm/in tables, simple charts to create, and an RFQ checklist. Minimum iron casting wall thickness…