How to choose the best vibration reducing materials?
A vibration-reducing material should have a high damping coefficient, or tan delta. It should maintain its performance without degrading over repeated usage and time. The best vibration-reducing material should have vibration absorption capabilities and vibration isolation characteristics in addition to its vibration-reducing qualities.
Why is it important to reduce vibration in the workplace?
It becomes important, therefore, to determine the best way to reduce vibrations in the work environment to protect your equipment, workforce, and ultimately, your profit margin. What Is a Vibration-Reducing Material?
How to improve the damping performance of ferromagnetic alloy?
Additionally, we found that heat treatment and grain size can improve the magnetic and mechanical damping performance of this ferromagnetic alloy. Proper annealing temperature and grain size is important to get high damping performance of the alloy.
How does Sorbothane reduce vibration?
Unlike pure viscous- or elastic-based materials, Sorbothane reduces vibrations over millions of cycles without degrading. Because it’s a viscoelastic material, it absorbs, isolates, and reduces vibrations simultaneously.
What does heat treating do to aluminum?
After aluminum has been solution heat treated, the elements that dissolved will begin to precipitate out over time. This causes the grains to lock into position, which in turn increases the natural strength of the aluminum and is called aging.
Why does heat treating make it stronger?
Heat treating can improve wear resistance by hardening the material. Metals (including steel, titanium, inconel, and some copper alloys) can be hardened either on the surface (case hardening) or all the way through (through hardening), to make the material stronger, tougher, more durable and more resistant to wear.
How does heat treatment improve mechanical properties?
There are many advantages of heat treatment, including: It can change a material's physical (mechanical) properties and it aids in other manufacturing steps. It relieves stresses, making the part easier to machine or weld. Increases strength, making the material ductile or more flexible.
What is the purpose of doing heat treatment on materials?
Heat treating can soften metal, to improve formability. It can make parts harder, to improve strength. It can put a hard surface on relatively soft components, to increase abrasion resistance. It can create a corrosion-resistant skin, to protect parts that would otherwise corrode.
How does heat treatment affect toughness?
Although the hardness decreases, the heat-treated hardness is still greater than the as-cast state. After destabilisation treatment at 1130°C, tempering at 200 to 250°C for 3 hours leads to the highest impact toughness, and secondary hardening was observed when tempering over 400°C.
What happens during heat treatment?
Heat treatment is the process of heating metal without letting it reach its molten, or melting, stage, and then cooling the metal in a controlled way to select desired mechanical properties. Heat treatment is used to either make metal stronger or more malleable, more resistant to abrasion or more ductile.
Does heat treatment increase stiffness?
A heat treatment, or alloy addition can increase or decrease the strength of the metal, its ductility but not the slope of the stress strain curve in the elastic region. it is only affected by temperature, with an increase in the operating temperature, the modulus of elasticity decreases.
What is the importance and effect of heat treatment process?
Like we mentioned, the right heat treatment will alter both physical and mechanical properties of your material, and it aids in other important manufacturing steps as well. The result of a properly applied heat treat processes can relieve stresses, making the steel easier to machine or weld.
What is the advantage and disadvantage of heat treatment?
Heat treatment helps to get desired mechanical and chemical properties, to reduce stresses, prevent stress relief and distortion when put to service. Whilst the disadvantages include distortion, surface oxidation or other contamination, added cost, etc.
Abstract
This paper studied the damping performance of Fe–13Cr–2A1–1Si alloy with different heat treatments using dynamic mechanical thermal analyzer (DMA). The effect of heat treatment and grain size on the damping performance was investigated in detail.
1. Introduction
With the development of industry, the problem of vibration and noise is increasingly serious, which not only affects the safety and service life of mechanical and military equipment, but also is severely deteriorating our civil environment.
2. Experimental procedure
In order to reduce the negative impact of C, N and interstitial impurity atoms on the damping performance, the alloys were prepared from raw materials of industrial pure Fe, 99.9% purity Cr, A1 and high purity Si. The sample was melted in vacuum induction melting (VIM) furnace with capacity of 25 kg and we prepared the sample twice continuously.
3. Results
Fig. 1, Fig. 2, Fig. 3 show X-ray diffraction diagram of Fe–13Cr–2A1–1Si alloy after different heat treatments. It can be seen from the figures that annealing temperature, holding time and cooling rate have no effect on crystal structure of the alloy. The alloy keeps the single α-Fe phase and there is no phase transition during heat treatment.
4. Discussion
According to above experimental results, heat treatment has great effects on the damping performance of Fe–13Cr–2Al–1Si alloy. With low frequency and low strain amplitude, high damping performance can be obtained by the best heat treatment system of 1100 °C×1 h furnace cooling.
5. Conclusion
In this work, samples of Fe–13Cr–2A1–1Si alloy were prepared and the damping performance by different heat treatment states was tested.
How does vibration reduce energy?
A vibration-reducing material outwardly disperses the energy caused by vibrations, by reducing the amplitude and frequency of the vibrational waves, usually in the form of thermal energy. The best vibration-reducing material prolongs the operational life of equipment and machinery.
What are the problems of vibration?
Vibration can cause problems and damage in many industrial applications—heavy machinery, vehicles, equipment, and tools. The repeated metal-to-metal contact in heavy machinery, for example, has the potential to damage parts and expose workers to unsafe conditions.
How does sorbothane work?
Unlike pure viscous- or elastic-based materials, Sorbothane reduces vibrations over millions of cycles without degrading. Because it’s a visco-elastic material, it absorbs, isolates, and reduces vibrations simultaneously. It is capable of absorbing nearly 95% of shock energy and reducing more than 50% of vibration energy.
What happens when you use pneumatic tools?
Extremely high-pressure vibrations created by pneumatic hand tools can cause serious nerve and circulatory damage with prolonged use. It becomes important, therefore, to determine the best way to reduce vibrations in the work environment to protect your equipment, workforce, and ultimately, your profit margin.
How much energy does sorbothane absorb?
It is capable of absorbing nearly 95% of shock energy and reducing more than 50% of vibration energy. Sorbothane performs well in nearly every industrial application.