Processing technology of copper strip for buzzing piece

Abstract

The processing technology comprises the following steps: S1, preparing a raw material A, a raw material B and a raw material C which are zinc ingots; s2, the raw material A is put into a smelting furnace to be smelted; s3, adding a deslagging agent, and fishing out slag completely; s4, a lubricant is added, and pull casting is conducted; s5, surface milling oxide skin and included slag removal are conducted on the surface of the pull casting product; s6, the ingot blank is annealed in a hot rolling push rod furnace under the condition of 800-900 DEG C; s7, the copper strip with the thickness of 4.2 mm is roughly rolled through two continuous rolling to obtain a copper strip with the thickness of 1.8 mm, and the copper strip is subjected to edge cutting and then rolled; s8, the 1.8 mm copper strip is subjected to heat preservation for 6 h in a push rod furnace at the temperature of 700 DEG C for annealing, and the 1.8 mm copper strip is subjected to acid pickling with dilute sulphuric acid at the speed of 70 m / min; the multi-group mixed raw materials of the preparation raw material A, the preparation raw material B and the raw material C are selected as the preparation raw materials of the copper strip, the structural level of the copper strip can be improved by mixing the various raw materials, the mechanical performance is enhanced, and meanwhile, the strength and the conductivity of the copper strip are improved.

Description

technical field [0001] The invention relates to the field of grinding wheel mesh preparation, in particular to a process for processing copper strips for humming sheets. Background technique [0002] The buzzer is a device used in piezoelectric ceramics. The more common ones are titanium and piezoelectric ceramics (pzt) made of zirconium and lead oxides and then sintered. In order to improve the low-frequency response, a double-diaphragm structure is generally used. The main structure of the buzzer is on a copper tape base. The piezoelectric ceramic sounding sheet is pasted on the chip, and most of them use copper strips because the copper sheet will not be magnetized, which will affect the vibration and pronunciation. At the same time, copper is not easy to oxidize and rust. Steel sheets are easy to oxidize and are more easily magnetized. Even high-grade stainless steel is prone to weak magnetism, so copper sheets are often used as buzzer sheets. Buzzers are widely used ...

AI Technical Summary

Problems solved by technology

[0003] In the existing preparation process of copper strips for buzzer chips, in order to save production costs and respond to the national call for green energy conservation, general enterprises will choose waste metal materials as raw materials for copper strips during production, and this waste and old The strength and wear resistance of the prepared raw materials are poor, so it will affect the mechanical properties of the copper strip. At present, in order to solve this problem, many manufacturers will coat special surface treatment agents in the process to ensure the strength of the copper strip. However, this treatment method cannot fundamentally solve the brittleness of the copper strip. After long-term use, the copper strip will be more likely to be worn. Therefore, it is necessary to provide a copper strip processing technology for buzzer chips.

Images