The resultant inlaid works will be of high quality, of form and size uniform, and needs a short time of process. The inlaying the cold is acceptable for a great series of samples admitted in the laboratory, and also for individual samples. In general, the resins for inlaying the hot one are less expensive of what resins for inlaying the cold. However, a press for the inlaying is necessary the hot one. Some resins for the inlaying the cold can be used for impregnation the vacuum. Description of the assay: The silica process is initiated passing desmoldante in the container of the embutidora.
The test body is placed centering it in the machine, after that a measure of bakelite is placed, closes it cover. Then kg/cm is applied a pressure of 115, through a lateral handspike that sets in motion a hydraulical piston, to never exceed the limit of 150 kg/cm. All time that the pressure to diminish, has that to increase moving it the handspike. After a time of 5 minutes leaves the test body. 3 Passo – Lixamento the proper lixamento removes the surface damaged or deformed of material, while limited amounts of new deformations are only introduced.
The goal is a plain surface with minimum damages that can easily be removed during burnishing, in the lesser possible time. Generally they are used sandpapers in record formats in a called equipment politriz. These records possess abrasive materials, as carbeto of silicon. It is sandpapered first with thick sandpapers, as the defects go being reduced, change for finer sandpapers of granulometria, trying sufficiently to reduce the deformations of the sample, in order to facilitate burnishing. Description of the assay: After the inlaying, obeying the correct granulometria, of the sandpaper thickest for finest, initiates the process in the manual sander with the water sandpaper 220, for conformation of the imperfections most rustic, always taking the care not to round off the edge of the test body.