Vibration aging processing

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Company name: Jinan Limei Electromechanical Technology Co., Ltd. (dedicated to eliminating and detecting residual internal stresses)

Main BusinessElimination of residual internal stresses in metals (including castings, welded parts, forgings, and machined parts). Improve weld strength and compensate for weld defects. Stress testing of various materials.

Main products：

Vibration aging equipmentThere are dozens of models available. For castings, welded parts, forgings, and machined parts. (Eliminate internal stress to ensure the stability of workpiece size. Prevent workpiece deformation and cracking).

Ultrasonic shock equipmentRegarding welding processes (improving welding fatigue strength, eliminating stress and weld toe surface defects, and suppressing crack occurrence)

Stress detector(Blind hole method stress detection equipment, drilling device. Accurate and stable metal internal stress detection)

Vibration agingThe craftsmanship originates from the impact time. Using the principle of resonance to change the lattice arrangement inside the workpiece and eliminate homogenizationinternal stressThus ensuring the accuracy of the structure being processed and constructed. Thus preventing the occurrence of structural cracking and deformation.

Ultrasonic shockIt is the use of high-power ultrasonic waves to impact the surface of metal objects. Due to the high frequency and efficient focusing of ultrasonic waves, the surface of the metal undergoes significant compression plastic deformation.It can significantly improve the fatigue life and fatigue strength of welded joints. Post weld treatment of the weld toe area to achieve a smooth transition, thereby reducing stress concentration caused by excess height, eliminating surface defects on the weld toe, and generating significant compressive plastic deformation at the weld toe area, resulting in residual compressive stress. This adjusted the welding residual stress field and enabled the weld toe area to achievereinforcementAnd hardening.

Stress detectorIt was approvedDrilling deviceAfter drilling, high-precision strain gauges provide feedback on the release strain amount to the control host. Calculate the stress value based on the principles of elasticity. Blind hole stress testing belongs to destructive testing, but due to the small drilling depth and diameter, it generally does not affect the continued use of the tested product. This method has good measurement accuracy and is the most widely used stress detection method in China.

LM-10Y LCDVibration aging processing equipment Stress relief machine

★High definition LCD screen displays the dynamic curve of stress changes during aging at any time.

★Automatically scan the frequency, confirm whether the timeliness processing effect is appropriate, and provide a revision plan.

★The time processing result curve is merged and displayed for easy observation of various data.

★ Automatically determine whether the process parameters are suitable and provide a revision plan to achieve human-machine dialogue.

★ Equipped with manual frequency scanning and manual operationtime limitMultiple working modes including fully automatic frequency scanning, fully automatic time efficiency, and preset process parameters.

The dynamic tracking function ensures that vibration processing is always carried out in the sub resonance zone required by the standard.

★ Adopting pulse width modulation technology, it has * anti-interference ability.

★ Automatic frequency scanning function, automatically selects the scanning range, and eliminates human involvement.

All imported components have reduced the failure rate to the lowest possible level and significantly improved the service life of the equipment.

★ Adopting high-power anti vibration permanent magnet slotless DC motor with adjustable eccentricity and no poles.

★ High speed thermal printer with Chinese display. Fully print the time efficiency curve and data for easy archiving and management by relevant departments.

★ Strong and weak electricity isolation to ensure operational safety.

★ The protection functions such as high-speed car protection, overload, overcurrent, overvoltage protection, etc. eliminate the danger of on-site operation.

LM-20Ultrasonic shock equipmentThe operation process is simple and easy to learn.

★ * Stable frequency and constant amplitude control circuit, eliminating the on-site danger of ordinary ultrasonic stress relief equipment

★ Can improve welding fatigue strength50％-120%Extended fatigue life5-100Twice.

★ Not limited by the shape, structure, material, weight, plate thickness, or site of the workpiece.

★ The welding excess height, pits, and undercuts at the weld toe can be directly processed into smooth geometric transitions, greatly reducing the stress concentration factor.

★ Used to eliminate welding residual stress, it can replace aging methods such as heat treatment.

★ The professional design of the impact head eliminates the difficulties of traditional time sensitive equipment and equipment in the same industry that are cumbersome to operate and cannot be operated on site, reducing the workload of on-site personnel.

★ The stress relief effect of on-site welding treatment, ultra-high and low welding treatment, and welding repair welding of large structural components is better.

★ Economical, practical, environmentally friendly, energy-saving, safe, and pollution-free.

LM-12Stress detector

This instrument mainly usesBlind hole methodConducting residual stress analysis and research on various materials and structures, and also serving as a stress analysis instrument for measuring the deformation of structures and materials at any point in static strength studies. If equipped with corresponding sensors, physical quantities such as force, pressure, torque, displacement, and temperature can also be measured.

Using a microcomputer as the central microprocessor, high-precision measurement amplifiers, data acquisition, and processors are employed. Zero adjustment is not required during measurement, and the magnitude and direction of residual stress values can be directly measured, achieving automation of residual stress measurement.

During the measurement process, the digital tube directly displays the strain values ε 1, ε 2, and ε 3 in three directions caused by stress release, as well as the calculated residual stress values δ 1 and δ 2 and the angle θ of the principal stress direction. The display method is button switching.

3. This instrument is equipped with a miniature intelligent printer. Three directions of stress-strain values and calculated residual stress values δ 1 and δ 2, as well as the angle θ of the principal stress direction, can be printed on site.

4. Corresponding release parameters can be freely set according to the material of the tested workpiece.

5. This instrument is equipped with an RS485 interface and corresponding software to analyze and process the data collected by the instrument on a PC.

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