Bend Testing Machine ISO 7438 Metallic Materials Plastic Deformation in Bending Hbt505A

Bend Testing Machine 3 Cylinder Structure 500kN 180° Bending Test HBT505A

Introduction

The 3 cylinder structure bending machine can meet with the test standard GB/T 14452-93, GB/T 232-1999, ISO 7438, ISO 5173, GOST 6996, ASTM A370.

Standard

EN ISO 7438:2005 has been prepared by Technical Committee ISO/TC 164
"Mechanical testing of metals" in collaboration with Technical Committee ECISS/TC 1 "Steel -Mechanical testing", the secretariat of which is held by AFNOR.

This International Standard specifies a method for determining the ability of metallic materials to undergo plastic deformation in bending.
This International Standard applies to test pieces taken from metallic products, as specified in the relevant product standard. It is not applicable to certain materials or products, for example tubes in full section or
welded joints, for which other standards exist.

Test Report

The test report shall include the following information:
a) a reference to this International Standard;
b) identification of the test piece (type of material, cast number, direction of the test piece axis relative to a
product, etc.);
c) shape and dimensions of the test piece;
d) test method;
e) any deviation from this International Standard;
f) test result.

Working principal

One upper-positioned cylinder applies the force to bend specimen to preset angle, then two opposite horizontal-placed cylinders bend the specimen to required angle. It can satisfy precise 180 degree bending test with high efficiency and easy-to-operate.

Features:

One-body cast steel structure with high stiffness

3-cylinder design to perform any angle bending test

Compact structure with ergonomic design

Displacement is measured by photoelectric encoder with high accuracy and stability

Self-calibration: force and displacement can be calibrated automatically according to test standards

Silent HPU features environmental-friendly and humanized design. Unique pressure differential follow-up system allows low energy consumption and low heat generation

High speed DSP control electronics provides high integrity, strong control and data processing ability, and high reliability

Closed loop control and measurement of stress, strain and displacement. Control loops can switch automatically and smoothly. Control algorithm adopts advanced neural element self-adapting PID.

New developed controller provides 1/500000 resolution with non-step in full range.

Built-in overload protection both in hardware and software
 

Parameters: