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A kind of preparation method of zinc alloy wire for spraying gold on the end face of metallized film capacitor

A technology of metallized film and zinc alloy, which is applied in the field of preparation of zinc alloy wire for gold spraying on the end face of metallized film capacitors, can solve the problems that the strength of the alloy has little effect and cannot significantly improve the strength, and achieve the effect of ensuring smooth progress

Active Publication Date: 2022-04-19
铜陵龙峰新材料有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This scheme adopts the quenching heat treatment method, but the alloys with zinc and aluminum as the main components are non-work-hardening materials, so there is no potential to significantly increase the strength through quenching. The test also shows that quenching treatment cannot significantly increase its strength, especially 150 Strength at ~200℃
[0008] Another example is that the publication number is CN101935779A, which discloses a zinc-aluminum alloy wire for spraying gold on the end face of a metallized film capacitor. When the temperature is 200°C, it has little effect on maintaining the strength of the alloy

Method used

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  • A kind of preparation method of zinc alloy wire for spraying gold on the end face of metallized film capacitor
  • A kind of preparation method of zinc alloy wire for spraying gold on the end face of metallized film capacitor
  • A kind of preparation method of zinc alloy wire for spraying gold on the end face of metallized film capacitor

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preparation example Construction

[0027] A preparation method of a zinc alloy wire for spraying gold on the end face of a metallized film capacitor, comprising the following steps:

[0028] (1) Raw material ratio;

[0029] (2) After melting the proportioned raw materials in the intermediate frequency furnace, the continuous casting billet rod with a certain wire diameter is obtained by continuous casting;

[0030] (3) Reduce the diameter of the billet rod into a continuous thick wire billet;

[0031] (4) Thick wire billets are heat treated, the furnace temperature is 275-320°C, and the holding time is 0.45-1.5h;

[0032] (5) After heat treatment, the thick wire billet is naturally cooled in an environment not lower than 20°C;

[0033] (6) The thick wire billet after natural cooling is drawn and reduced.

[0034] Further, the raw material ratio is 10-22%wt of aluminum, and the balance is zinc.

[0035] Further, the drawing and reducing diameters are firstly drawn and reduced by using two continuous roller d...

Embodiment 1

[0039] Example 1, a method for preparing a zinc alloy wire for spraying gold on the end face of a metallized film capacitor, comprising the following steps: 10%wt of aluminum (Al) and the balance of zinc (Zn) in an intermediate frequency furnace After melting, the continuous casting method is used to obtain a continuous billet with a wire diameter of Φ14mm; the Φ14mm billet is processed into a continuous Φ4.0mm thick wire billet through continuous rolling through reducing processing; the thick wire billet is put into a heat treatment furnace for For processing, the furnace temperature is 275°C, and the holding time is 0.45 hours; take the thick wire billet out of the furnace, and cool it naturally in the air not lower than 20°C; Die drawing and reducing to Φ1.66mm wire diameter, the continuous drawing and reducing process temperature does not exceed 70°C; the finished wire drawing die is drawn, and its specification size is Φ1.60mm, while drawing, apply lubricating oil to the s...

Embodiment 2

[0040] The difference between Example 2 and Example 1 is that the holding time of the heat treatment of the thick wire billet is 1.5 hours; the content of lubricating oil drawn by the finished wire drawing die is 0.009%wt.

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Abstract

The invention discloses a preparation method of a zinc alloy wire for spraying gold on the end face of a metallized film capacitor. Continuous casting of slab rods; the casting slab rods are reduced in diameter and processed into continuous thick-wire billets; the thick-wire billets are heat-treated at a furnace temperature of 275-320°C, and the holding time is 0.45-1.5h; the heat-treated thick-wire billets are Natural cooling is carried out in an environment below 20°C; the thick wire billet after natural cooling is drawn and reduced. The yield strength of the zinc-aluminum alloy wire prepared by the invention is higher than 40 MPa at 150-200 DEG C, and gun blocking and explosion are not easy to occur during the arc gold spraying process, thereby ensuring the smooth progress of the gold spraying operation.

Description

technical field [0001] The invention relates to the production field of metallized film capacitors, in particular to a method for preparing zinc alloy wires for spraying gold on the end faces of metallized film capacitors. Background technique [0002] Capacitors have special advantages such as self-healing function, reliable operation, stable capacity, and long life. They are widely used, especially in the field of new energy. In the process of capacitor manufacturing, first use the plastic film with zinc and aluminum evaporated on the surface, and form the core of the capacitor through stacking and winding processes; then make a layer on the two ends of the core by arc spraying gold. The 0.4~0.6 mm thick gold spray layer is used as the two electrode plates of the capacitor; finally, the two lead wires of the capacitor are welded on the gold spray layer. [0003] In order not to burn the core, the alloy used for arc spraying gold to make the gold spraying layer on the end ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21C37/04
CPCB21C37/047
Inventor 李锋宋振亚彭孜闫鸣金燊超戴登峰傅珠荣葛鑫
Owner 铜陵龙峰新材料有限公司
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