Ultrasonic Stress Relief Machine Ultrasonic Stress Relief Equipment

Our company specializes in productionUltrasonic stress relief equipmentVibration aging equipment, stress detector. Technology development and product promotion in the fields of stress relief and stress detection.

Ultrasonic aging machineMainly used to eliminate internal stress and surface defects of weld toes caused by welding processes. Prevent deformation or cracking of the workpiece caused by stress release and suppress crack initiation. Improve the yield strength and fatigue life of welds, and increase surface hardness.

Experimental results have shown that the stress relief rate of workpieces treated with ultrasonic aging equipment can reach up toOver 80% of the deformation caused by stress concentration in the workpiece has been improved. And the fatigue life can also increase by an order of magnitude.

Ultrasonic aging machineIt is to use high-power ultrasonic waves to impact the surface of metal objects. Due to the high frequency of ultrasonic wavestallThe energy under the focusing effect causes significant compression plastic deformation on the metal surface.It can significantly improve the fatigue life and fatigue strength of welded joints. After welding, the weld toe area is treated 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, resulting in residual compressive stress. The welding residual stress field is adjusted, and the weld toe area is strengthened and hardened.ultrasoundAs a post weld treatment device, the impact equipment can simultaneously improve multiple factors that affect the quality of the weld seam, such as stress, defects, weld toe geometry, surface strengthening, etc. Therefore, it has a multiplier effect on improving the fatigue performance of the welded joint, which can increase the fatigue strength of the treated welded joint by 50% -120% and extend the fatigue life by 5-100 times. Due to the adoption ofUltrasonic aging machineHandling gunsAfter equipment processing, traditional polishing and slag removal processes are eliminated, saving 20% of labor time, reducing labor intensity, and improving production efficiency.

Scope of applicationUltrasonic aging equipment is widely used in fields such as ships, petrochemicals, aviation, railways, wind turbines, pressure vessels, steel or composite bridges, heavy lifting machinery, etc. It is suitable for post weld treatment of various material welded structures, achieving the purpose of extending the fatigue life of welded structures, improving their fatigue strength, and eliminating welding process stress and residual stress. It is particularly suitable for post weld treatment of ordinary joints, load-bearing joints, and dissimilar material welded joints.

Mainly applied in the following four aspects:

(1) Strengthen the surface of metal parts to improve their surface quality and fatigue resistanceLabor life expectancy;

(2) Adjust the stress field, reduce welding deformation, and ensure the dimensional stability of the workpiece;

(3) The treatment of eliminating welding stress on the locally welded repair parts of mechanical components. Now this method is being used on foreign machines

In mechanical manufacturing engineering, especially for welding structures with high requirements for fatigue performance and elimination of residual stresses

It has been widely used in writing.

(4) Improve several factors that affect the fatigue performance of welds, such as residual stress, microcracks and defects, and welding

The geometric shape of the toe and surface strengthening are currently the most effective methods for improving the fatigue performance of welds.

LM-20ultrasonic waveManufacturer of Time sensitive Instrument ProcessingThe operation process is simple and easy to learn.

★ Digital dynamic display of current frequency, intuitively reflecting the aging process.

★ Time preset function, making it easier to control impact speed and improve operational standards.

★ Set the audio button to enable timely processing and reduce the workload of the operator.

★ Alarm indicator light, * stable frequency and constant amplitude control circuit, overheating and overload protection, * eliminating the danger of on-site operation.

★ * Stable frequency and constant amplitude control circuit, frequency offset, overload, and overheating protection. *Eliminate the on-site hazards of ordinary ultrasonic impact equipment and ensure the treatment effect.

★ 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.

★ 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 welding allowance, pits, and undercuts at the weld toe can be directly processed into smooth to geometric transitions, reducing the stress concentration factor.

★It can remove micro cracks and slag defects at the weld toe and suppress the premature formation of cracks.

★ 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.

Technical Specifications
★ Output power:1500W High power ultrasonic impact equipment can eliminate deep stress in workpieces, improve fatigue strength and hardness
★ Output frequency:20KHz
★ Output amplitude:100um
★ Type of transducer: piezoelectric ceramic
★ Maximum continuous working time:24h
★ Cooling method: Air cooling
★ Processing speed:0.1m~0.5m/min
★ Voltage:AC 220V 50HZ

Processing effect of LM-30 ultrasonic aging instrument:
1. Transforming residual tensile stress within the surface layer of metal welds into compressive stress, thereby significantly improving the fatigue life of metal structures.
2. Changing the metal grain structure within the surface layer to create a plastic deformation layer, thereby significantly improving the strength and hardness of the metal surface layer.
3. Improve the geometric shape of the weld toe and reduce stress concentration.
4. Changing the welding stress field significantly reduces welding deformation and improves the dimensional stability of the workpiece.

• Used to improvewelded jointUsage method of fatigue performance
• Hold the handle and align the impact head of the ultrasonic impact gun with the weld toe of the weld seam, and make it almost perpendicular to the weld seam.
• The impact needle array of the impact head is arranged along the direction of the weld seam
• When processing the weld seam, use an impact gun to apply a slight force to the toe of the weld seam, so that the impact gun can perform impact treatment on the weld seam under its own weight.
• During the processing, the impact gun swings at a certain angle perpendicular to the weld seam and moves back and forth along the weld seam to achieve an ideal smooth transition shape at the weld toe.

• In order to achieve better processing results, multiple impact treatments can be performed on the weld seam. In impact treatment, it is important to control the processing speed. Generally, it is better to control the processing speed at 500MM per minute for structural components. For those with special requirements and irregular welds, it can be slowed down appropriately to achieve good processing results. Ultrasonic hammering equipment
• Usage method for strengthening the surface of parts

Hold the handle with your hand and align the impact head of the impact gun with the surface of the part to be processed, and it should be basically perpendicular to the surface of the part.

During the strengthening process, apply a slight force to the surface of the part with an impact gun, so that the impact gun can basically affect the part surface under its own weight Perform impact treatment on the surface.

• During the processing, the surfaces of the parts that need to be strengthened must be impacted, and the higher the impact density and the stronger the impact current, the better the surface strengthening effect.
• By using machine tools, the impact gun can be fixed on the tool holder to achieve automatic surface strengthening of the workpiece.
• Methods for eliminating welding stress and preventing welding deformation

• When the workpiece is welded into shape, the weld seam and the metal near the weld seam should be rapidly cooled from high temperature to room temperature. Due to the fast cooling rate and large temperature gradient, significant welding tensile stress is generated near the fusion side of the weld seam, leading to welding deformation of the workpiece.
• Hold the handle with your hand andUltrasonic shock instrumentThe impact head is aligned with the base metal at the weld seam (generally referred to as the heat affected transition zone) and is essentially perpendicular to the surface of the base metal.
• Apply a certain amount of force to allow the impact gun to impact the surface of the base metal at the weld under its own weight, thereby eliminating residual tensile stress. With the release of tensile stress, the entire stress field changes, causing plastic deformation of the workpiece and gradually returning to normal. Ultrasonic hammering equipment
• In order to achieve better processing results, ultrasonic impact treatment can be applied to areas with high welding tensile stress, which can maximize the deformation recovery of the workpiece

Application scope:Ultrasonic aging machine

Ship and Ocean EngineeringWelding joints of railway and highway bridgesPipelines and pressure vesselsLarge components with complex welding structures and high constraintsConstruction machinery, lifting machinery, steel structuresFatigue prone components threatened by fluctuating loads