Back
Knowledge

Purpose, characteristics, operation steps and precautions of cone bending testing machine

Abstract: 文章《圆锥弯曲试验机的目的、特点、操作步骤及注意事项》介绍了圆锥弯曲试验机用于测试涂料的附着力、柔韧性和伸长强度的目的和操作方法。该试验机能有效评估涂料在弯曲应力下的抗裂性能和与基材的附着力。文章概述了试验机的特点，如操作简便、安全，结构坚固且防腐蚀，以及体积小、重量轻。操作步骤包括准备测试样品、夹紧样品、进行弯曲测试、释放样品并检查裂纹。测试结果需记录裂纹长度及其与小端的距离，以评估涂料的性能。

The purpose of the conical bend test

The conical bend test is a simple and effective testing machine used to determine the adhesion, flexibility and elongation strength of coatings, varnishes, paints, etc. This test is used to determine a paint's resistance to cracking and detachment from a substrate or material under bending stress. For the test, the test board was bent through 180 on the cone and required post-mortem inspection.

Application field

  • It is a laboratory testing machine for the paint industry and manufacturing industry.

  • The test actually applies to both single-coat and multi-coat panels.

  • Suitable for performing experimental purposes and quality control.

The purpose, characteristics, operation steps and precautions of the conical bending testing machine are shown in Figure 1

Features of Cone Bending Tester

  • Simple and secure sample clamping, one-handed operation.

  • Rugged design and corrosion-resistant construction.

  • Small size and light weight.

  • Easy to operate.

Steps

  • First, prepare rectangular test samples according to standards DIN EN ISO 6860, GB11185, etc.

  • To test, place the tester on the bench.

  • Make sure the bending rod is positioned before the conical bend , the clamping bending rod needs to be placed upwards.

  • Now insert the sample between the test panel and the bending role, protecting the sample from any kind of damage.

  • The coated side of the sample should be placed facing the bending roll.

  • The rolling direction shall be at an angle of 90° to the axis of the conical bend .

  • Clamp the test panel tightly.

  • Tighten the screw provided and push the clamping lever down.

  • Bend the test sample evenly over the cone 180 within 2 or 3 seconds.

  • Now release the test panel and check the samples.

The purpose, characteristics, operation steps and precautions of the conical bending testing machine are shown in Figure 2

Record

Immediately after removing the sample from the equipment, consider the sample for cracking of the coating or any type of separation from the substrate.

Measure the length of the crack and the panel in centimeters from the small end of the cone to the marked end of the crack.

Calculate the average of all determinations and record the result to the next


Products required
Relevant knowledge
Guess you like it