Shuangyashan vibration aging instrument, vibration stress relief

Vibration aging equipment manufacturer

Research on the Application of Vibration Aging Technology in Welded Structures

Welded structures are widely used in modern industry, but the residual stresses generated during the welding process seriously affect the performance and service life of the structure. Vibration aging technology, as an effective stress relief method, has demonstrated unique advantages in welding structure treatment. This article will focus on exploring the application characteristics and technical points of vibration aging in welded structures.

During the welding process, significant residual stresses are generated in and around the weld due to uneven local heating and cooling. The presence of these residual stresses may lead to deformation, cracking, and other issues in the welded structure, reducing its load-bearing capacity and fatigue life. Vibration aging can effectively release welding residual stress and improve the dimensional stability and mechanical properties of the structure by applying vibration to the welded structure.

In the vibration aging treatment of welded structures, several key issues need to be noted. The first step is to choose the timing of processing, usually after welding is completed and cooled to room temperature. For large and complex structures, segmented welding and segmented aging methods can be used. Next is the arrangement of excitation points and support points, which need to be selected reasonably according to the shape of the structure and the distribution of welds to ensure that the vibration energy can be effectively transmitted to the weld area. For long weld structures, mobile excitation can be used to ensure that each part can receive sufficient vibration treatment.

The application effect of vibration aging in welded structures has been widely verified. Practice has shown that welding structures treated with vibration aging can reduce residual stress30-60%Reduced deformation of the structure50%Above, fatigue life can be improved2-3Twice. Especially in the fields of bridge steel structures, pressure vessels, shipbuilding, etc., the application of vibration aging technology not only improves product quality, but also significantly reduces production costs and cycles.

With the continuous development of welding technology and the increasing demand for welding quality, the application prospects of vibration aging technology in welded structures will be even broader.

Fully automatic vibration aging instrument eliminates welding stressApplication:

Vibration aging is an energy-saving, environmentally friendly, and low-cost aging method. Compared with traditional thermal aging and natural aging, vibration aging has the advantages of short production cycle, simple and flexible site, low production cost, and no environmental pollution. Due to the advantages of aging vibration and the requirements of modern industry for energy and environmental protection, the application of aging vibration is a good choice for enterprises to improve traditional technologies and enhance market competitiveness. At present, vibration aging equipment has replaced traditional thermal aging and natural aging in some aspects.

The vibration aging treatment equipment mainly applies periodic dynamic stress to the workpiece, forcing it to vibrate within its resonance range, and superimposes the dynamic stress and internal residual stress applied to the workpiece during the vibration process. Generate plastic deformation to release residual stress. At the same time, this periodic dynamic stress repeatedly promotes dislocations and lattice slip of metal atoms in the internal structure of the metal, eliminating and homogenizing internal stress relaxation.

Fully automatic vibration aging instrument eliminates welding stressAt present, vibration aging treatment equipment has three major process characteristics:

1. Improve the mechanical performance of components

After vibration aging treatment, residual stress can be eliminatedAbout 20% to 80%. It can improve the strength and fatigue life of components, and reduce stress corrosion. It can prevent or reduce the occurrence of microcracks caused by processes such as heat treatment and welding. It can improve the deformation resistance of parts, stabilize the accuracy of parts, and enhance mechanical quality.

2. Strong applicability

Due to its simple operation and easy mobility, it can be processed in any location. It is not limited by the size and material of the components. Components ranging from tens of kilograms to hundreds of tons can be processed using vibration aging machines. Especially when some large components cannot undergo thermal aging treatment, the advantages of vibration aging treatment are more prominent.

3. Save time, energy, and costs

This device only requiresYou can enter the next process in 30 minutes. Thermal aging takes at least one to two days and requires a large amount of kerosene, electricity, and other energy sources. Therefore, compared with thermal aging, aging vibration treatment can save more than 90% of energy and cost, and is energy-saving and environmentally friendly, which has been unanimously chosen by many customers.