Test coating quality

Testing coating quality is a critical step in ensuring the reliability of 컨포멀 코팅 in PCB 어셈블리 그리고 SMT 어셈블리. Proper inspection and testing help verify that the coating provides effective protection against moisture, dust, chemicals, and environmental stress.

Visual inspection

Visual inspection is the most basic and widely used method.

What to check:

• Uniform coating coverage
• Absence of bubbles, cracks, or pinholes
• No contamination or foreign particles
• Proper masking boundaries

Under normal or magnified light, inspectors can quickly identify obvious defects in 컨포멀 코팅.

UV inspection

Many 컨포멀 코팅 materials contain UV tracers.

Process:

• Expose PCB to UV light
• Coating fluoresces, making coverage visible

Benefits:

• Detects missed areas or thin coating
• Improves inspection accuracy in SMT 어셈블리

Thickness measurement

Coating thickness is essential for performance.

Methods:

• Wet film thickness gauge (before curing)
• Dry film thickness measurement (after curing)
• Micrometer or ultrasonic measurement

Proper thickness ensures optimal protection without affecting component function in PCB 어셈블리.

Adhesion testing

Adhesion testing checks how well the coating bonds to the PCB.

Common methods:

• Cross-hatch (tape) test
• Scratch test

Good adhesion ensures long-term durability of 컨포멀 코팅.

Electrical testing

Electrical performance must not be compromised.

Tests include:

• Insulation resistance testing
• Dielectric withstand (Hi-Pot) testing

These confirm that the coating enhances insulation in SMT 어셈블리.

Environmental and reliability testing

For high-reliability applications, environmental tests are required.

Examples:

• Temperature cycling
• 습도 테스트
• Salt spray (corrosion) testing

These tests simulate real-world conditions to validate 컨포멀 코팅 performance.

자동 광학 검사(AOI)

고급 PCB 어셈블리, AOI systems are used to detect coating defects.

Advantages:

• High-speed inspection
• Consistent and repeatable results
• Suitable for mass production

Common coating defects detected

• Uneven thickness
• Bubbles and voids
• Delamination
• Incomplete coverage
• Contamination

Early detection prevents failures in final products.

최종 결론

Testing coating quality is essential in PCB 어셈블리 그리고 SMT 어셈블리 to ensure the effectiveness of 컨포멀 코팅. By combining visual inspection, UV inspection, thickness measurement, adhesion testing, and environmental testing, manufacturers can guarantee high reliability and long-term protection of electronic devices.

컨포멀 코팅 견적 받기

지금 바로 컨포멀 코팅에 필요한 전문가의 조언과 가격을 확인하세요.
요구 사항을 보내주시면 엔지니어링 팀으로부터 빠른 답변을 받으실 수 있습니다.

24시간 대응 ✔ 엔지니어링 지원 ✔ 소규모 및 대량 생산

이 양식을 작성하려면 브라우저에서 JavaScript를 활성화하세요.

이름 *

이메일 *

upload Email Preferred

WhatsAPP

선호 자료

• 아크릴(AR)
• 실리콘(SR)
• 폴리우레탄(UR)
• UV 경화 - UV
• 잘 모르겠음 / 조언이 필요함

파일 업로드

파일을 끌어다 놓습니다,, 업로드할 파일 선택 최대 8 파일까지 업로드할 수 있습니다.

빠른 처리를 위해 모든 거버 파일, 드릴 파일 및 BOM을 하나의 .ZIP 또는 .RAR 파일로 압축하세요.

메시지

"Please list components or areas that must NOT be coated (e.g., connectors, test points)." If you have specific coating material requirements (e.g., HumiSeal), Please indicate this in the comment box.

제출하기

심천 텅신지에 전자 유한 공사.