The cold spray deposition, a process for producing a preform, about the axis of rotation of the preform, a step of supplying a starting substrate, starting substrate at least having a substantially planar deposition surface One of having shaft end and supplying, and rotating the starting substrate about an axis of rotation of the preform, to form a product deposition surface, the material on the deposition surface of the starting substrate using a cold spray deposition comprising the steps of depositing a cold spray deposition process, in order to form the steps the material having a cold spray applicator to be sprayed onto the deposition surface through which is deposited, a continuous deposited layer of material, cold using a spray deposition, comprising the steps of continuously depositing material on each of the uppermost product deposition on the surface, co To maintain a constant distance between the shield spray applicator and the best product deposition surface, other relatively axially along the rotational axis of the preform, cold spray applicator or the start board and flop, and at least one of the moving steps of the remodeling products, by moving them, to form a preform product selected length, and a step of moving, cold spray applicator, a preform rotating shaft process by being moved in a plane perpendicular, is deposited on the product deposition surface of the deposition surface or preform product starting substrate, the material as a substantially flat surface.
.FIELD 7