Metal Wire Torsion Testing Machine (Hz-4012B)

Equipment summarization:
It is mainly used for theΦ 3.0~Φ 10.0 metal wire torsion testing machine. The function of which is determination of metal wire to withstand severe plastic deformation in one-way or two-way reversed ability and display of wire surface and inner defect. It is a reliable measure instrument for producing and using wire units.

1. Working term:
1) room temperature within 10~35° C
2) On steady work table. Install correctly, parallelism less than 0.2%.
3) In the absence of vibration environment
4) non - corrosive media in around
5) power: Three phrase four line 380V± 10% 50Hz; Voltage fluctuations: Fluctuations not exceeding ± 0.2.

2. Construction and working principle
This Metal Wire Torsion Test Machine is made from engine part and electrical part. Count from the original mechanical structure to electronic counting, counting the minimum value of up to 0.1, test of axial Afterburner, Rotating Afterburner, test specimen is disconnected number of latches, termination tests are controlled by the electronic circuit, Simple and convenient operation.
Right end of the machine for axial removable Chuck, chuck mobile uses a sliding bearing, small friction resistance, reliable guarantees of axial movement of flatness. Axial Afterburner uses a 10: 1 lever weights Afterburner, weight precision of 0.1. The left side of the machine is the slider box, drag the slider box by 0.5KW motor, enable it to move around, slider boxes by double - speed motor, gearbox, optical code disc and rotating Chuck composition. Left side of the machine is equipped with the left limit switches, guarantee the safety of equipment.

3. Usage and operation
1) prepare for specimen
A. The length of test specimen follows the principles of GB/T239-1999 metal wire torsion testing method.
1.0~<Φ 5.0 L=100d Φ 5.0~Φ 10.0 L=50d
The length of both side of chuck clamping is 30mm, all in together 60mm.
B. The test specimen must be straight by any possibility. Please make it straight on hand when necessary. If it won't work when you do this like that, please put the specimen on the wood, plastic or copper, and hit it with hammer which material is the same as the specimen, or you can use other method to make it straight slightly, but please don't damage the specimen' surface and torsion it too. Part of specimen curved can not be used for test.
2) install and nip the specimen
A) Selected based on specimens of soft and hard splint, select two specimens of hard Groove plywood, sample soft select a Groove of the other is raised, when the splint is selected, will push the splint into the two chuck' holes. Choose plywood by harder of specimen. Two groove plywood can be use if the specimen is hard,
B)Turn on main power switch LED display 000.0. According to the length of the specimen and the distance Chuck, the left and right line switch reset in the appropriate location, pressing the green test button, make the distance Chuck to a suitable location, plug one end of a specimen Chuck 30mm, with the six - party move hand rotating Chuck in the screw under the M20, align the center of the specimen clamping head Middle, and then use the move within the six - party screws that hold the hand above the rotating Chuck M20, and repeatedly adjust the two screws, after the centerline of the specimen at Chuck tightening screw clamp, tightening the other end of the specimen in the same way.
C)Specimen axial tensile force and reverse speed select. According to GBT239-1999 requirements, To make the test piece during the test process is straight, should be subjected to some form of pulling force, This experimental nominal tensile strength of wire tensioning force shall not be greater than the corresponding value of 2, weight of the test machine using 10: 1 lever Afterburner, the afterburner size equal to weight nominal value X10.