Flowmeter Point Settings: Gas 5.5, Oxygen 2.25.Spraying Parameters for MK 61 - Molybdenum Wire Using pre-set callipers, check final deposit thickness including grinding allowance. Complete the spraying of the main deposit traversing the spray head to give a uniform coating over the bearing seat. The spray-stream should be at 90° to the surface being coated and traversed by hand to give an even coating.Ĭontinue to spray the main deposit of Molybdenum using the same parameters as the bond coat but increase spray range to 100mm-150mm (4”- 6”). Note: If rubber cover is in good condition and to be left intact during the spraying operation, it is essential that roller temperature is kept as low as possible during spraying and should not exceed 85☌.Ī deposit of Molybdenum Wire is applied to a deposit thickness of 75μm-100μm (0.003”-0.004”) at a range of 75mm (3”). The roller should be mounted in a lathe chuck and rotated at a surface speed of not less than 18 metres/minute (60ft per minute). Spraying should be as soon as possible after preparation and before any visible sign of deterioration occurs. Delays between blasting and spraying should not exceed 20 minutes. IMPORTANT: Area to be sprayed should not come into contact with chains, rope slings, hands or any other form of contamination.Check thoroughly area to be sprayed for contamination.Apply No Bond masking fluid, using a small paint brush to all areas adjacent to the area being sprayed (small amounts of masking fluid on areas to be sprayed can be removed with emery cloth).Ensure that area to be treated is thoroughly blasted.Thoroughly inspect for contamination prior to blasting.Mask all machined surfaces adjacent to area requiring treatment with heavy duty masking tape.Degrease by solvent vapour process if equipment available.