굽힘 장치

1. 장비에 대한 기본 이해

1.1 주요 매개변수

파라미터	주의 사항
Nominal Diameter of the Sample Conduit	16, 20, 25mm
Inner Bend Radius	96120, 150mm
Outer Radius of Bend	113141, 178mm
Groove Radius of Forming Dies and Bending Rolls	8.1, 10.1, 12.6mm

This device is designed for specialized testing of the mechanical properties of metal and composite cable conduits.

It is primarily used in electrical appliance quality inspection laboratories, the quality control departments of cable and conduit manufacturers, third-party testing organizations, and for import and export product inspections.

1.2 적용 가능한 표준

In strict accordance with clauses 10.4.101 and10.4.103, and Figure 103 (IEC 61386-21:2021, clauses 10.4.101 and 10.4.103, Figure 101), and subjected to testing.

1.3 전자 문서 다운로드

We have already sent you the download links for the electronic user manual, calibration certificate, warranty card, and other documents via email at the time of shipment. Please download them as soon as possible. If you have not received the email, please contact us to request the download links again.

2. 사용상의 주의

2.1 Operational Environment Safety Requirements

작동 환경 온도: 15°C ~ 35°C; 상대 습도: 45% ~ 75%; 결로 현상 없음, 부식성 가스 없음, 공기 중 분진 없음.

Place the device on a level, stable workbench with at least 30 cm of clearance on all sides, away from sources of vibration.

2.2 Safety Guidelines for Operational Procedures

During testing, do not reach into the test area with your hands or any other part of your body to prevent crush injuries.

The specimen must be securely fastened to prevent it from falling or ejecting during loading, which could pose a safety hazard.

3. 테스트 설정 소개

3.1 Standard Diagram

그림 3-1을 참조하십시오(IEC 표준에서 발췌).

그림 3-1

3.2개의 제품 사진

그림 3-2를 참조하세요.

번호	주의 사항
①	Specimen mounting holes, sizes include 16, 20, and 25 mm
②	Molding Die
③	Curved Rollers
④	Curved roller handle: Slide the handle down to bend the installed conduit.

그림 3-2

4. Catheter Bending Test

4.1 테스트 실행

Metal tubes with diameters of 16, 20, and 25 were subjected to bending tests using the LS-B51M machine.

A test specimen with a length of 30 times the nominal diameter is subjected to a bending test; when the test fixture is released, the specimen bends to an angle of (90 ± 5)°, resulting in an inner radius of curvature equal to 6 times the nominal diameter.

For pipes with welds, conduct this test on six specimens: three specimens with the weld on the outer side of the bend and three specimens with the weld on the inner side of the bend.

4.2 시험 결과 평가

After testing: Neither the catheter material itself nor the catheter’s protective coating shall exhibit any cracks visible to the naked eye or with corrected vision without additional magnification; if there are welds, they shall not crack; and the catheter’s cross-section shall not be excessively deformed.

Deformation of the cross-section shall be checked by the following tests:

The bent conduit shall be positioned for testing as follows: the straight section shall be at a 45° angle to the plumb line, with one end of the specimen facing upward and the other facing downward, such that the corresponding gauge shown in Figure 4-1 (taken from the IEC standard) can pass through the conduit under its own weight and without any initial velocity.

그림 4-1

5. 테스트 후 절차

5.1 장치 재설정

Outside of test periods, specimens must not be mounted on the test apparatus to prevent the application of force when testing is not in progress.

5.2 샘플 준비

Separate the test specimens that passed and those that failed, label them appropriately, and avoid mixing them up.

5.3 Cleaning and Tidying Up the Test Site

Wipe dust and debris from the surface of the device with a lint-free, soft cloth; do not rinse the equipment directly with water.

Organize the tools on the workbench, arrange them neatly, and clean up any debris left over from the experiment.

6. 정기 유지보수 및 관리

6.1 정기 점검

Every three months, apply a small amount of neutral grease to the bending roll shafts to prevent rust and seizing; apply rust-preventative oil to the forming dies and bending rolls to prevent rust.

6.2 장기 보관 및 유지 관리

After routine maintenance is complete, cover the entire unit with a dust cover and store it in a dry, well-ventilated warehouse.

6.3 교정 주기 요구사항

To ensure the accuracy and reliability of the device, it is recommended that it be sent periodically to a qualified third-party metrology institution for calibration. The recommended calibration interval is 12 months. Users may determine the specific calibration interval based on usage frequency, environmental conditions, and quality system requirements.

7. 문제 해결 및 일반적인 문제 해결 방법

결함 증상	가능한 원인들	순서
Jamming of the Curved Roller	Dust buildup, insufficient lubrication, foreign objects lodged in the mechanism	먼지를 제거하고, 윤활유를 보충하고, 틈새에 있는 이물질을 제거한 후 다시 시도하십시오.