| 摘要 |
<p>A solenoid coil is fabricated by precision winding a length of bondable magnet wire on a mandrel, heating and axially compressing the precision-wound convolutions to cause the bondable insulation to deform into a unitary, void-free mass, but without deforming the pre-existing circular cross-section of the conductive metal core of the wire, and allowing the wire to cool such that the mass immovably captures the convolutions of the conductive core to thereby form a free-standing coil. The coil is then disposed in a mold cavity where the entirety of the coil is encapsulated. This produces a solenoid coil that is well-suited for use in high-pressure 'wet' environments because the encapsulated assembly is strong and leak-proof. The encapsulant may be molded in such a manner as to have no seams extending from its surface to the winding.</p> |
