Snecma

Snecma Moteurs

Patrick Chevalier

Christian Marty

Arnaud Biramben

Patrice Ragot

Jean-Christophe Husson

Franck Truelle

Serge Alain Fargeas

Patrick Calero

Jean-Pierre Richard

Isabelle Valente

Pierre Richard

A method of manufacture of a multilayer ceramic shell mould whereof at least one contact layer out of a wax master pattern or a part to be manufactured, or other similar material, includes a step of preparing a first slip containing ceramic particles and a binder; a step of dipping the master pattern in a first slip; a step of forming the contact layer, and a step of depositing sand particles particles onto the layer and drying the contact layer. The ceramic particles of the slip are mullite particles and the slip includes a texturing agent.

Lost wax moulding method with contact layer

A method of manufacture of a multilayer ceramic shell mould out of a master pattern includes the steps of dipping the master pattern in a first slip containing ceramic particles and a binder, depositing sand particles to form a contact layer, dipping the master pattern in a second slip containing ceramic particles and a binder, depositing sand particles to form an intermediate layer, dipping the master pattern in at least a third slip containing ceramic particles to form a reinforcing layer. The ceramic particles of the slips includes mullite, alumina, or a mixture of the two, whereas no layer contains any zircon.

Lost wax casting method

Growing community of inventors

Sannois, France

Patrick Chevalier