{"id":7463,"date":"2026-10-10T06:22:41","date_gmt":"2026-10-10T06:22:41","guid":{"rendered":"https:\/\/www.lyafs.com\/?page_id=7463"},"modified":"2026-10-16T08:02:49","modified_gmt":"2026-10-16T08:02:49","slug":"sand-casting","status":"publish","type":"page","link":"https:\/\/www.lyafs.com\/fr\/services\/sand-casting\/","title":{"rendered":"Sand Casting"},"content":{"rendered":"

\nSand Casting\n<\/p>

\nSand Casting, From Pattern to Poured Part\n<\/h1>

\nSand casting is still the most economical way to make a metal part in the hundreds or low thousands. The variable is not the sand \u2014 it is how the mould gets made. We run both routes: traditional pattern-based moulding, and moulds printed directly from CAD with no pattern at all. Send one drawing and we will tell you which route fits, what it costs, and what tolerance you will actually hold.\n<\/p>

\nSend your drawing for a quote\n<\/a>\nSee capacity and equipment\n<\/a><\/div><\/div><\/section>
\n4 casting routes\n<\/strong>\ngreen sand, no-bake, shell and printed\n<\/span><\/div>
\nCT8 to CT9\n<\/strong>\nstandard working tolerance\n<\/span><\/div>
\n10,000 t+\n<\/strong>\naluminium capacity a year\n<\/span><\/div>
\n5 m+\n<\/strong>\nlargest casting envelope\n<\/span><\/div><\/div><\/div><\/section>

\nSand casting in one paragraph\n<\/h2>

\nSand casting pours molten metal into a cavity formed in bonded sand. The sand is cheap, refractory, and can be reclaimed; the cavity is destroyed when the part is knocked out. That is the whole economics of the process: you pay for a mould every time, but you pay very little for the mould itself.\n<\/p>

\nEverything else \u2014 how fine the surface is, how tight the tolerance holds, how thin a wall you can pour \u2014 follows from how the cavity was made and how the metal was fed into it. Those two decisions are the ones worth getting right, and they are where this page spends its time.\n<\/p><\/div><\/section>

\nWhat comes out of a printed mould\n<\/h2>

\nThe point of the process is the part, not the mould. These are castings poured from printed sand moulds and cores \u2014 engine blocks, pump and valve bodies, impellers, gearbox cases and structural housings, in aluminium, copper alloys, cast iron and cast steel.\n<\/p>

\"Finished
\nCastings straight out of the mould, before machining.\n<\/figcaption><\/figure>
\"Machined
\nMachined, inspected and on the pallet \u2014 one chain, one owner.\n<\/figcaption><\/figure>
\"Metal
\nComplex internal passages, cast in one piece.\n<\/figcaption><\/figure><\/div><\/div><\/section>

\nFrom CAD file to a printed mould\n<\/h2>

\nA printed mould is not a pattern. There is nothing to withdraw, so the mould can be built hollow with the cores already in place, and internal passages arrive with no joint line to clean up or flash to remove.\n<\/p>