摘要:
A method for coating a metal fastener (49), comprising: a) applying a protective plating over at least substantially all of a metal surface of the fastener to form a plated fastener; b) vacuum coating (111, 108, 112) a portion of the plated fastener with a coating composition (60), the coating composition including a polymer material and a pigment material dispersed in a solvent; and c) removing (130) the solvent, leaving a coating of a polymer composition including the polymer material and the pigment on the portion of the plated fastener.
摘要:
There is provided an insert nut (1), wherein a die is pressed on one surface of a predetermined metal plate (7) to form a thread portion (8), at the same time to form a patterned portion (9) on the other surface of the metal plate, whereafter the metal plate (7) is wound such that the thread portion (8) becomes an inner thread (2) located inside so as to form a cylindrical form, and then the opposite edges (7a,7b) of the wound metal plate are connected together to form a cylindrical shank portion (3), wherein the outside surface of the exposed patterned portion of the shank (3) is covered with a resin layer (6) such that projections (5) of a synthesis resin is formed at the outside thereof.
摘要:
A fastener assembly (50) includes a row of fasteners (49) having a head (51), a tip (47), and a portion of a shank (48) coated with a polymer composition. The polymer composition includes a polymer material such as polyurethane and metal particles. The polymer composition is used to provide improved corrosion and ultraviolet radiation resistance when used with naturally corrosive or pressure preservative treated wood. The fastener assembly (50) is coated with the polymer composition by vacuum (111, 108, 112) coating (120, 106, 114) a dispersion of the polymer composition in a solvent such as water and removing the solvent.
摘要:
A feed screw including a screw shaft (1), a nut (2) meshed with the screw shaft (1), and a plurality of rolling members (3) inserted between the screw shaft (1) and the nut (2), wherein a solid film (5) of a fluorine-containing polyurethane polymer is formed on any portions in rolling/sliding contact. The molecules of this solid film (5) have urethane bonds, and form a three-dimensional reticular structure. Therefore, the film is unlikely to separate, peel off or wear. Accordingly, the feed screw produces less dust, improves lubricating property and thus elongates its life.