Copper foil surface treatment machine quality appraisal

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copper foil surface treatment machine takes the collaborative control of electrochemical polishing and micro-etching as its core principle. By optimizing the electrolyte formula, current density distribution and rolling parameters, it can achieve precise control of copper foil surface roughness, oxidation resistance and adhesion. It is widely used in PCB substrates, lithium battery negative electrode current collectors, flexible circuits and other fields. In PCB manufacturing, it is used for ultra-thin copper foil processing of high-frequency substrates; in the lithium battery industry, it meets the needs of uniform passivation and conductivity improvement of negative electrode copper foil; in electronic packaging, it ensures low roughness and high bonding strength of chip carrier boards. Compared with traditional processing equipment, copper foil surface treatment machines have the characteristics of high processing speed, thickness control accuracy, and reduced energy consumption. They are the core equipment for high-end electronic material manufacturing.

Zhongke Testing is a product quality appraisal service organization registered with the court. It can provide quality appraisal services for copper foil surface treatment machines. It has a professional appraisal team and advanced instruments and equipment to provide fair and accurate appraisal results for the quality appraisal of copper foil surface treatment machines.

As the demand for copper foil refinement increases, related quality dispute cases have increased significantly. The judicial dispute focuses on:

1. Dispute over performance indicators: the surface roughness of the treated copper foil exceeds the standard and the oxidation resistance is insufficient;

2. Material defects: the coating on the surface of the titanium roller falls off, causing scratches and electrolysis Liquid impurities exceed the standard;

3. Process problems: current density fluctuations >±5% lead to uneven etching and insufficient accuracy of the tension control system;

4. Contract performance disputes: key modules are inconsistent with the technical agreement.

0 Such cases require clear quality responsibility through surface morphology analysis, equipment dynamic testing and process parameter tracing.

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copper foil surface treatment machine quality identification technical methods include:

1. Appearance inspection: observe whether there are pits, scratches, bubbles and other defects on the surface of the copper foil.

2. Dimensional measurement: Measure the thickness, width, length and other dimensions of the copper foil, and compare them with standard values.

3. Electrical performance test: Test the electrical properties such as resistivity and conductivity of copper foil to determine whether it meets the requirements.

4. Surface morphology analysis: Use a microscope or scanning electron microscope to observe the morphology of the copper foil surface and analyze its smoothness, roughness, etc.

05. Process analysis: Copper foil surface treatment process parameters, such as plating time, etching temperature, etc., determine whether it meets the process requirements.

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A lithium battery factory of the applicant signed a "6μm Copper Foil Processing Machine Purchase Contract" with an equipment manufacturer of the respondent, and it was agreed that Ra ≤ 0.4μm after processing. Three months after it was put into production, the oxidation defect rate of the copper foil reached 5%. The manufacturer argued that it was due to improper humidity control in the workshop.

Identification analysis results:

The quality analysis expert group discussed and comprehensively analyzed the relevant information, contract technical agreements, on-site inspection case materials and other data of the "Copper Foil Surface Treatment Machine" and made the following quality analysis opinions: HTMLT The current density of the copper foil surface treatment machine involved in the AGTOKEN5

case fluctuated by ±8%, resulting in uneven etching depth (deviation ±0.3μm); the titanium roller coating partially peeled off to form micro-protrusions (height ≥1μm), causing scratches on the copper foil; the Fe³⁺ content of the electrolyte exceeded the standard to 120ppm (agreement ≤50ppm), accelerating surface oxidation.

The appraisal conclusion identified equipment dynamic control defects and material contamination as the main causes of quality problems.

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copper foil surface treatment machine quality appraisal report mainly includes the following content:

1. Client information

2. Appraisal equipment information

3. Appraisal basis (standard, power of attorney, etc.)

4. Identification method

05. Identification results (including appearance inspection, performance testing, disassembly inspection, material analysis, etc.)

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26. Identification conclusion

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