Method for improving surface quality of LED copper belt

A surface quality and copper strip technology, which is applied to workpiece surface treatment equipment, machine tools suitable for grinding workpiece planes, and machine tools designed for grinding workpiece rotating surfaces, can solve problems such as poor surface quality and many scratches , to achieve good control and reduce the effect of surface brush marks

Inactive Publication Date: 2016-04-13
ANHUI CHUJIANG TECHCAL NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the disadvantages of more surface scratches and poor surface quality of LED copper strips with a thickness greater than 1.0mm in the prior art, and to provide a method for improving the surface quality of LED copper strips, which greatly reduces production costs. Scratch generation in the process, improve the surface quality of the product

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A method for improving the surface quality of LED copper strips in this embodiment specifically includes the following steps:

[0036] Step 1. Rough rolling of rough copper strip

[0037] Step 2. Primary annealing of rough copper strip

[0038] After rough rolling in step 1, the rough copper strip is annealed in a bell-type furnace. The specific process is: put the rough copper strip into the bell-type furnace, heat up to 350°C after 3.5 hours, and then keep it for 5.5 hours. After the heat preservation is over, the furnace is cooled to Take it out at room temperature.

[0039] Step 3, a cleaning of the rough copper strip

[0040] After step 2 is finished, put the rough copper strip into the cleaning line for cleaning, firstly carry out alkali cleaning, then carry out pickling, and finally use the brush roller to grind (here is the first cleaning of the rough copper strip, the thickness of the rough copper strip is still Subsequent multi-pass rolling is required, and...

Embodiment 2

[0055] Same as Example 1, the difference is that the specific annealing process of step 2 and step 5 in this example is as follows: put the rough copper strip into the bell furnace, heat up to 420°C after 4 hours, then keep it warm for 6 hours, and the heat preservation ends After the furnace cools to room temperature and takes it out. In this embodiment, when the rough copper strip is rolled, the rolls of the rolling mill are finely ground with a high-precision numerical control roll grinder to adjust the surface roughness of the rolls to 0.23 / um. The process film selected in this embodiment has a thickness of 12um PET film.

Embodiment 3

[0057] Same as Example 1, the difference is that the specific process of annealing in step 2 and step 5 in this example is: put the rough copper strip into the bell furnace, heat up to 450°C after 4.5 hours, then keep it warm for 6.5 hours, and the heat preservation ends After the furnace cools to room temperature and takes it out. In this embodiment, when the rough copper strip is rolled, the roll of the rolling mill adopts a high-precision numerical control roll grinder to finely grind the surface of the roll, so that the surface roughness of the roll is adjusted to 0.22Ra / um. The process film selected in this embodiment is PET film with a thickness of 11um.

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Abstract

The invention discloses a method for improving the surface quality of an LED copper belt and belongs to the field of control over the surface quality of the LED copper belt. The method includes the steps of rough rolling of a blank copper belt, primary annealing, primary cleaning, primary rolling, secondary annealing, secondary cleaning, secondary rolling, tertiary cleaning and the like. The surfaces of all rollers of a rolling mill are accurately ground through a high-precision numerical control roll grinder for primary rolling and secondary rolling, the surfaces of the rollers directly make contact with the copper belt, and the surface of the copper belt is ground. No brush roller grinding is adopted for secondary cleaning and tertiary cleaning, so that grinding non-uniformity and brush marks are avoided. When the blank copper belt is conveyed among all the procedures, a PET thin film is flatly laid on the surface of the blank copper belt, and therefore scrapes caused by direct contact of layers and the scrape problem which cannot be solved on equipment are avoided. By the adoption of the technical scheme, the scrapes in the production process can be greatly reduced, and the surface quality of the product can be improved.

Description

technical field [0001] The invention relates to the technical field of surface quality control of LED copper strips, in particular to a method for improving the surface quality of LED copper strips with a thickness greater than 1.0mm. Background technique [0002] The LED lamp bracket is the bottom base of the LED lamp bead before packaging. On the basis of the LED lamp bracket, the chip is fixed in, the positive and negative electrodes are soldered, and then packaged with packaging glue. LED light brackets generally use copper as the base material (currently there are iron, aluminum, and ceramics, etc.), because copper has good conductivity, and other metals such as silver are plated on the surface of the copper strip to facilitate welding and packaging; there will be Lead wires to connect the electrodes inside the LED lamp bead. After the LED lamp bead is packaged and formed, the lamp bead can be removed from the bracket. The copper feet at both ends of the lamp bead becom...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B1/22B21B45/02B24B7/10B24B5/16C22F1/08
CPCB21B1/22B21B45/0269B24B5/167B24B7/10C22F1/08
Inventor 孙红刚盛代华梅桂林刘建新文志凌
Owner ANHUI CHUJIANG TECHCAL NEW MATERIAL CO LTD
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