Cold draw production method of wire core 4J42 alloy for covering copper
A production method and wire core technology, which is applied in the field of manufacturing expanded alloy wire, can solve problems such as easy scratches and damages on the surface of the copper clad layer, uneven deformation of the copper layer and the wire core, and bulging of small bubbles, etc., to improve the surface Quality, improvement of mechanical properties, improvement of product quality and production efficiency
Inactive Publication Date: 2010-11-24
BAOSTEEL SPECIAL STEEL CO LTD
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Problems solved by technology
[0011] The purpose of the present invention is to provide a cold-drawing production method of the wire core 4J42 alloy for copper cladding, which overcomes the problem that the copper layer and wire appear after the copper cladding processing and cold drawing of the product in the traditional mandrel jacket copper tube welding and drawing production method. Uneven core deformation and delamination and peeling, the deformed surface of the copper clad layer is easily scratched and damaged, bulging small bubbles, broken wires and other problems; in addition, by adjusting the cold processing parameters of the 4J42 alloy core material to obtain a fine grain structure , to improve the mechanical properties of the material
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[0024] The present invention will be further described in detail below in conjunction with the accompanying drawings.
[0025] A kind of cold drawing production method of wire core 4J42 alloy for cladding copper, concrete steps are as follows:
[0026] After pickling, the φ10mm hot-rolled disc is drawn in a single pass (or continuously drawn in two passes) to φ9.05mm±0.15mm. That is, it can be used for single-pass φ10mm pickling directly to drawing φ9.05mm±0.15mm, or can add a deformation pass, such as φ10mm pickling and drawing φ9.05mm, and then drawing φ9.0mm±0.15mm. Using the latter method, the grain size of the product will be more uniform.
[0027] The semi-finished product is annealed. The annealing process parameters are 830°C±20°C. After 0.5-1.5h of heat preservation, it is quickly taken out of the furnace and water-cooled.
[0028] After the semi-finished product is annealed, the surface oxide layer is completely eliminated by disc peeling. The diameter reduction of...
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Abstract
The invention discloses a cold draw production method of a wire core 4J42 alloy for covering copper, comprising the following steps: conducting an acid-treatment on a hot rolled wire rod; carrying out the first continuous drawing; annealing the semi-finished product after the first continuous drawing; using the wire rod to strip the annealed semi-finished product to eliminate an oxide layer on the surface of the annealed semi-finished product; carrying out the second continuous drawing; and removing soap and air drying to obtain the finished wire rod. In the invention, aiming at the defect of original 4J42 alloy core materials for covering the copper, wire rod stripping is used to improve the surface quality of the alloy; wire rod continuous drawing is used to increase the length of the 4J42 alloy core material for covering the copper; and an original outer sleeved cooper pipe welding method is replaced to improve the product quality and production efficiency, thereby meeting application requirement. Furthermore, by regulating cold processing parameters of the 4J42 alloy core material, thinner grain structure is obtained and mechanical property of materials is improved.
Description
technical field [0001] The invention relates to a manufacturing method of expanded alloy wire, in particular to a cold-drawing production method of a 4J42 alloy with a wire core for cladding copper, especially for improving the mechanical properties and grain structure of the 4J42 alloy with a wire core for cladding copper. The invention discloses a production method of continuous coil cold drawing processing. Background technique [0002] The wire core 4J42 alloy is a Fe-Ni series constant expansion alloy containing 41.5% to 42.5% Ni and more than Fe. Its expansion performance is similar to that of ceramics and soft glass below 380°C, and it can be well sealed with ceramics and soft glass. Therefore It is a good electric vacuum sealing material, and it is a necessary material for the manufacture of electron tubes, transistor projection bulbs and lighting bulbs. [0003] The electrical conductivity of 4J42 alloy is poor. After coating copper on 4J42 alloy, not only the expa...
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IPC IPC(8): C21D8/06C21D1/26
Inventor 陆伟建
Owner BAOSTEEL SPECIAL STEEL CO LTD