Shenzhen vibration aging equipment manufacturer sells in stock

Shenzhen Vibration Aging Equipment Shenzhen Welding Stress Vibration Aging Instrument Procurement Jinan Limei Electromechanical Technology Co., Ltd. - Integrity and professionalism

1、 Characteristics of Shenzhen vibration aging equipment in eliminating residual stress

Vibration aging equipment produced by Limei CompanyDue to its advantages such as good timeliness, strong dimensional stability of workpieces, economic practicality, low investment, and significant energy saving, it is gradually replacing traditional natural aging and thermal aging in practical applications. During the manufacturing processes such as casting, welding, forging, and mechanical processing of workpieces, residual stresses are generated inside the workpiece. The existence of residual stress will inevitably lead to deformation and cracking of the workpiece, seriously affecting the dimensional stability of the workpiece and reducing its fatigue life. The influence of time-dependent vibration machine on metal components:

　　Methods for eliminating stress: Currently, the most commonly used methods on the market are heating stress relief and vibration aging devices Stress relief, as well as ultrasonic impact stress relief, although natural placement stress relief is effective, the cycle is too long, as short as six months, which no manufacturer can afford. Time is money. Heating in a tempering furnace results in a stress relief rate of80%Left and right, but will be affected by the following aspects.

2、 Scientific basis for eliminating welding residual stress with Shenzhen vibration aging equipment

The vibration aging machine is an aging device that causes resonance in the processed workpiece. By resonance, a certain amount of vibration energy is transmitted to all parts of the workpiece, causing microscopic plastic deformation inside the workpiece. The distorted lattice gradually restores its equilibrium state, thereby eliminating and homogenizing residual stresses inside the workpiece, ultimately preventing deformation and cracking of the workpiece during processing and use, and ensuring the stability of workpiece dimensional accuracy.

3、 What functions should be usedVibration aging equipmentRemove residual stresses inside the components

The vibration aging machine has a significant effect on eliminating welding and casting stresses, and has been developed and applied for decades both domestically and internationally. In the manufacturing processes of casting, welding, forging, and mechanical processing of workpieces, residual stresses are generated inside the workpiece. The existence of residual stress will inevitably lead to deformation and cracking of the workpiece, seriously affecting the dimensional stability of the workpiece and reducing its fatigue life. Characteristics of welding stress relief equipment:

　　1、Stress relief equipmentIt is a new product developed and improved on the basis of traditional LCD series.

　　2The spectrum analysis technology with good vibration stress relief can automatically develop vibration aging process plans and achieve human-machine dialogue.

　　3All imported components are used to improve the service life and stability of the equipment.

　　4The dynamic display of on-site aging process of vibration stress relief equipment ensures good aging effect and eliminates human factors.

　　5Based on good spectral analysis techniques, select the excitation frequency according to optimized processes for aging treatment.

　　6、Time efficient processing machineAdopting pulse width modulation technology, it has * anti-interference ability.

　　7、20Double circuit safety factor design, the host eliminates heat generation, longer lifespan, and equipment implementation2424-hour uninterrupted operation;

　　8Dual core central processing unit, with a running speed three times faster than ordinary vibration aging devices.

　　9Automatically based onJB/T5926-20051Whether the national standard determines the effectiveness of timeliness. Exclude human factors.

　　10The aging process, vibration amplitude and frequency band analysis adopt fine search, and the accuracy of peak and resonance points reaches one ten thousandth.

　　11、Vibration aging instrumentAll internal electronic components are configured according to military standards and can work normally for a long time in complex environments such as high temperature, extremely low temperature, or severe dust.

　　12The exciter is designed with dual eccentricity, dual drive, and dual circuit, greatly improving the excitation force while enhancing stability accuracy and extending service life.

　　13、Vibration aging instrumentThe control system adopts industrial control computer chassis, which has strong anti electromagnetic interference ability, ensuring the normal and reliable operation of the system in more harsh industrial sites.

14High speed warning and protection function for equipment failure. If there is a runaway, high current, or high peak value, the equipment can be protected in a very short time (microsecond level, traditional equipment is millisecond level) to prevent damage to internal components and exciters, and the cause of the fault and its handling methods should be provided.

4Vibration aging machineHow to choose a resonance exciter motor

Vibration agingequipmentIt is achieved by eliminating or homogenizing residual internal stresses through the principle of resonance, mainly by transferring resonance energy to various parts of the workpiece, causing microscopic plastic deformation inside the workpiece, thereby eliminating or homogenizing residual stresses inside the workpieceinternal stressEnsure the stability of the workpiece size. Currently widely used in production processes such as welding, casting, forging, and machining. Stress relief machines are gradually replacing traditional natural and thermal aging methods in practical applications due to their good aging effect, strong dimensional stability of workpieces, economic practicality, low investment, and significant energy savings. In the selection of time processing equipment, the first thing to consider is whether the exciter meets the requirements, as follows

　　1The excitation force should be large and adjustable. The excitation force of equipment produced domestically and internationally is usually2About one ton, the largest3.5Ton, all are adjusted in stages after shutdown. The domestically developed continuously adjustable excitation force vibration aging system can continuously adjust the excitation force during operation.

　　2During the vibration treatment process, it is necessary to have sufficient frequency stability accuracy and complete frequency fine-tuning to ensure that the components can be stably subjected to vibration treatment in resonance state. Especially for some castings, the natural frequency changes very little after vibration treatment. (such asC620，2After vibration treatment, the frequency of the rice bed casting decreased by less than1Hz）It should also be able to draw a more accurate amplitude frequency characteristic curve for detection. For components with low damping and narrow resonance frequency band, as long as a small frequency stability accuracy is ensured, they can be disposed of in resonance state.

　　3The requirement is small in size, simple, and compatible with the system. The system has good supporting functions, including a control system, exciters, fixtures and vibration dampers, printers, etc., making it very convenient for on-site use.

　　4The exciter should have a wide frequency range, which can cause more workpieces to resonate at their natural frequencies. And the frequency of the exciter needs to be continuously adjustable, so that the amplitude frequency characteristic curve can be made during vibration treatment.

The vibration stress relief machine originates from impact aging and consists of a complete set of main control box, exciter, sensor, elastic rubber pad, printing system, auxiliary card mounting tools, and related connecting wires. Processing efficiency usually only requires15—45Minutes, regardless of location, not limited by workpiece size, shape, weight, etc., can handle workpieces ranging from several kilograms to several hundred tons. The workpiece can be processed on-site without transportation and can be inserted between any processes for processing. The use of vibration aging can improve work efficiency by dozens of times, and it has the advantages of reducing environmental pollution, shortening production cycles, improving working conditions, and simplifying processes. Principle of vibration aging process:

5、 How to evaluate the aging effect of vibration aging process

Vibratory Stress ReliefIt is a special force applied to the workpiece through vibration, called dynamic stress. When the dynamic stress is superimposed with the residual stress of the workpiece itself, the polar material will undergo different deformations to meet people's needs. The application of vibration aging in the field of mechanical processing. Thermal aging involves heating, insulation, and cooling the workpiece to eliminate internal stress, and has specific processing and manufacturing methods.

according toJB/T5926-2005According to the standards of the Machinery Industry Department, under the same pre vibration preparation conditions and sweep rate, if any of the following situations occur, it can be determined that the vibration aging process effect has been achieved in some areas of the workpiece in the current state:

aAmplitude time（A-N）The curve flattens after rising
This is because during the aging process, as residual stress is released or changed, the material's rigidity of the workpiece relaxes and its physical properties change, causing the amplitude to constantly change. Once this change stops, it indicates that residual stress is no longer released or changed, and the aging goal has been achieved. The change process of residual stress is reflected on the curve as an amplitude rising segment, and when the amplitude stabilizes, it indicates that the aging process has been completed.
bAmplitude time（A-t）The curve rises, then falls, and finally flattens
同aThe principle of the process described is the same, but the difference is that the decrease is due to the workpiece processing frequency gradually increasing, exceeding the sub resonance zone. The protective adjustment made by the aging equipment to prevent fatigue and damage to the workpiece during processing.
cAmplitude frequency（A-N）The peak value of the curve after vibration increases compared to before vibration
During the aging process, due to the release of residual stress, the change in residual stress acting as a restraining force reduces the rigidity of the workpiece and increases the amplitude, indicating that residual stress changes towards elimination during the aging process.LMThe main parameter of the series is the rotational speed, therefore it is adoptedA-nCurve.
dAmplitude frequency（A-N）The peak point of the curve after vibration is shifted to the left compared to before vibration
The principle is the same as described in the previous item, except that the resonance frequency decreases due to the decrease in rigidity.
eAmplitude frequency（A-N）Narrowing of bandwidth after curve oscillation compared to before oscillation
Due to the residual stress changes during the aging process, the rigidity decreases and the resonance of the workpiece becomes easier, which directly reflects the narrowing of the frequency band.
If no changes are found in the curve or parameters after the aging process is completed, it is considered that the aging effect is not qualified, and the device display will automatically give a prompt.

6、 Excellent after-sales service:

Operation Training:The company's training engineers provide free on-site training for new equipment users' operators. The training is completed with the operator's approval and signature, ensuring that the operator has learned and mastered the skills. Professional sales of vibration aging equipment, complete range of products, *. Free on-site installation and debugging, training for operators. Consultation and negotiation.

Installation and commissioning: For users who purchase equipment from our company, our company will dispatch experienced equipment installation engineers to carry out installation and commissioning. Provide free equipment installation and engineering technical service guidance, and offer * services to customers

Scope of application: Vibration aging is suitable for castings, forgings, welded parts and machining of carbon structural steel, low-alloy steel, stainless steel, cast iron, non-ferrous metals (copper, aluminum, zinc and their alloys), etc.