Microcomputer controlled stress relaxation test machine

Microcomputer control stress relaxationTesting machineDuring the research and development process, it was developed based on the design concepts and structural characteristics of relaxation test machine companies such as Germany and Italy, and based on relevant national standards for relaxation test of prestressed steel. Specially used for relaxation tests of steel stranded wires, galvanized steel wires and prestressed steel bars. This series of test machines is mainly used for relaxation tests of prestressed steel, which can accurately measure the uniaxial tensile relaxation characteristics of prestressed steel and other metal wires. It can be widely used in quality inspection departments, construction units, steel hinge wires and steel bar production enterprises, and is a new type of testing equipment for modern building mechanics testing. Meet GB/T20065-2006 "Threaded steel bars for prestressed concrete", GB/T10120-1996 "Metal Stress Relaxation Test Method". The design of the test machine host and auxiliary equipment draws on advanced technology from Japan's Shimadzu, with beautiful appearance, convenient operation, and stable and reliable performance. The computer system controls the rotation of the servo motor through a special measurement and control system, and after deceleration, the precision ball screw pair is driven to move back and forth, so that the sample can be loaded. This machine is widely used in the inspection and analysis of metal materials in construction materials, aerospace, machinery manufacturing and other industries, and is an ideal testing equipment for the quality inspection department.
1. Product Introduction

The main unit of the test machine adopts a horizontal structure, with a low center of gravity of the equipment, which is easy to operate, and the constant temperature and vibration-free conditions required by the slack test are easily met. The machine uses a fully digital servo speed regulation system with high speed regulation accuracy and stable performance as the driving system, a dedicated measurement and control system as the control core, and WINDOWS as the control and data processing software for the operation interface to realize the screen display of test force, test force peak, beam displacement, sample deformation and test curve. All test operations can be automatically completed on the computer through the mouse. Good humanized design makes testing easier.
2. Technical parameters
Host structure: horizontal;
Testing force: 300kN;
Test force measurement range: 2%-100%FS;
Test force display accuracy: display accuracy ±1%;
Test space range: 800-1000mm;
Steel rod diameter specifications: ∮7.1, ∮9.0, ∮10.7, ∮12.6;
Screw stroke: 0-200mm;
Screw movement speed: 0.005-50mm/min;
Movement speed accuracy: ±0.5%;
The coaxiality of the collets at both ends of the sample: Φ0.15mm;
Sensor: load sensor;
Control method: Automatically control the test process;
Display method: real-time display of the computer screen;
Overload protection: Automatic shutdown reaches 3-5% of the test force.