Enameled sheet wire is extruded cladding process
Technical field
The present invention relates to a kind of electromagnetic wire application technology, particularly a kind of enameled sheet wire is extruded cladding process.
Background technology
At present, traditional enameled sheet wire production is that the insulating varnish that will contain solvent in a large number utilizes felt or mould to be coated in the copper conductor surface, cures through high temperature in baker then and makes insulating varnish generation cross-linking reaction.In this kind course of processing, can consume a large amount of electric energy, and give off the solvent vapo(u)r of 65%-80% in the lacquer liquid, in the solvent of employing mainly based on cresols and dimethylbenzene; Thereby cause a large amount of energy to be consumed, and serious environment pollution.
Therefore, providing that a kind of technology is simple, the rectangle magnet wire insulation of energy-conserving and environment-protective is extruded cladding process, is the big problem that this field scientific research and development personnel need research and solve.
Summary of the invention
The objective of the invention is to overcome above-mentioned weak point, provide that a kind of technology is simple, the enameled sheet wire extrusion process of energy-conserving and environment-protective.
The technical solution adopted in the present invention is for achieving the above object: a kind of enameled sheet wire is extruded cladding process, and implementation step comprises:
(1) rod-shaped conductors is produced the square-section bare wire that satisfies dimensional requirement through extrusion production by the selection of fricative heat of squeegee roller and mould; 400 ℃-500 ℃ of working temperatures, operating pressure 40-50MPa;
(2) the square-section bare wire through room temperature purify waste water cooling, online speed with 5-100m/min dry up after coated insulation layer during by the insulating material extrusion die; Make insulation extruded mould central point overlap consistent with the bare wire central point of extruding;
Below adopting, described insulating material exempts from one of solvent insulating resin material: polyvinyl resin, methylal resin composite material, polyetherimide resin, polyurethane or directly weld polyester enamel-cover composite polyamide resin, PAEK resin;
(3) the line body behind the coated insulation layer through on-Line Monitor Device monitoring insulating barrier size, forms finished product, take-up automatically after room temperature is air-cooled.
The invention has the beneficial effects as follows:
1, the direct coated insulation material of extruding back square-section bare wire, need not pass through semi-finished product take-up, unwrapping wire operation again, purpose reaches minimum for making naked lenticular wire flexibility, has guaranteed consistent the overlapping of conductor central point with insulation extruded mould central point, thereby has guaranteed the uniformity of thickness of insulating layer.
2, the solvent resin-insulated material is exempted from use, does not need the solvent paint, and insulating material solids content 100% does not have the discharging of pernicious gases such as containing cresols and dimethylbenzene, steam, and is environment friendly and pollution-free.
Embodiment
Below in conjunction with preferred embodiment, to according to embodiment provided by the invention, details are as follows for feature:
A kind of enameled sheet wire is extruded cladding process, and implementation step comprises:
(1) rod-shaped conductors is produced the square-section bare wire that satisfies dimensional requirement through extrusion production by the selection of fricative heat of squeegee roller and mould; 400 ℃-500 ℃ of working temperatures, operating pressure 40-50MPa.
(2) the square-section bare wire through room temperature purify waste water cooling, online speed with 5-50m/min dry up after coated insulation layer during by the insulating material extrusion die; (speed is decided by the specification of line, and the big speed of production of wire gauge is slow);
The center is fixed, and it is consistent that the insulation extruded mould central point and the bare wire central point of extruding are overlapped,
Promptly keep extruding bare wire mould and insulating material extrusion die concentricity in full accord.
Below adopting, described insulating material exempts from one of solvent insulating resin material: polyvinyl resin, methylal resin composite material, polyetherimide resin, polyurethane or directly weld polyester enamel-cover composite polyamide resin, PAEK resin.
(3) the line body behind the coated insulation layer through on-Line Monitor Device monitoring insulating barrier size, forms finished product, take-up automatically after the room temperature air cooling.
Adopt this winding conducting wire of explained hereafter of the present invention to be used to manufacture windings such as all kinds of electric pressure transformers, reactor, motor, performance is safe and reliable.
Above-mentionedly with reference to embodiment this enameled sheet wire being extruded the detailed description that cladding process carries out, is illustrative rather than determinate; Therefore in the variation and the modification that do not break away under the general plotting of the present invention, should belong within protection scope of the present invention.