What metal transfers less vibration? - The Home Machinist!

Post by yahnker » Wed Aug 31, 12:20 pm

For more information, please visit SUNSONG.

There are two things that typically drive vibration, the excitation force (mass) and the spring constant of the material. Assuming that cutting forces are far greater than the mass and if you keep feed, speed, and depth of cut the same for tools of various materials, then you could assume that the vibration is due solely to the material.

If it is assumed the the spring constant of the material is the driving factor, there are three things that govern the spring constant. 1 - The modulus of elasticity (a material property) E, 2 - the moment of inertia (directly related to the cross sectional shape of the too) I, and 3 - the length of the tool L. As you stated, if all the tools were the same size and shape, that will narrow things down to just the modulus of elasticity.

For the materials mentioned, here are the modulus of elasticity (E).

Aluminum ~ 10,000 ksi (it various slightly with the alloy composition)
Steel ~29,000 ksi (on average)
Magnesium ~6,500 ksi
Cast iron ranges pretty far 12,000 - 25,000 ksi due to it's material structure.

The equation for the spring constant is: k = 3EI/L^3. The higher the spring constant, the harder it is to exicite the tool and create vibration. Since the modulus of elasticity is in the numerator (E), it stands to reason that the higher the modulus of the material that, the greater the spring constant, the less the vibration.

So finally the short answer is, you would expect steel to be the best and magnesium to be the worst. Cast iron would be good depending on its structural composition. Note that cross sectional shape can play as large of role as the material itself. A stiffer cross sectional shape can make up for a weaker material. Also note that the length place an even greater role (it's part is cubed). The shorter the beam, the more difficult it is to excite it (think of your car antenna).

Sorry, for the long explaination, but hope this answers you questions.

Chris
[img]/ubb/images/graemlins/laugh.gif"%20alt="[/img]

Chris Yahnker, P.E.
Beaver Oaks Ct.
Raleigh, NC

There are various types of vibrating screen equipment. Among them, the circular vibrating screen is common vibrating screen equipment. The circular vibrating screen machine is a multi-layer, high-efficiency new type of vibrating screen, which is widely used for product classification in mining, building materials, transportation, energy, chemical, and other industries. It has the characteristics of reliable structure, low energy consumption, high screening efficiency, low vibration and noise, durability, convenient maintenance, safe operation, etc. Our customers have feedback that they do not know how to choose the appropriate vibrating screen suppliers. The editor will introduce the selection method of vibrating screen for you below.

1. Consider the type of material

When choosing vibrating screen equipment, the first thing to consider is the type of material. In production, there are various types of materials, and their hardness and properties are quite different. Common materials such as ore, sand, and powder. When users choose a circular vibrating screen manufacturer, they must make a reasonable choice according to the actual production situation, so as to take advantage of the vibrating screen. For some special materials such as vicious, strong adsorption, and easy agglomeration, circular vibrating screen machines cannot be used.

2. Consider actual production needs

Are you interested in learning more about Vibration Stainless Steel? Contact us today to secure an expert consultation!

The function of the vibrating screen is to remove the impurities contained in the materials, improve the quality of the materials, and screen out qualified materials for further processing and use. Therefore, when we choose a vibrating screen device, we must conduct a comprehensive analysis based on our own production requirements, screening grades, screening requirements, and filtration levels. The greater the power of the vibrating screen, the higher the throughput, and we must communicate more with the merchants. Choose the right equipment.

3. Consider the size of production output

When choosing a vibrating screen facility, we must also consider the production capacity of the production line. There are many types of vibrating screens, and the production capacity of different types of vibrating screens is also quite different. Therefore, before we choose to buy a circular vibrating screen appliance, we must understand the production capacity of the production line before purchasing. Pay attention to the sieving accuracy and screen specifications of the vibrating screen when purchasing.

4. Consider the material of the vibrating screen

First of all, we must understand that the accessories of the vibrating screen machinery are mainly composed of a circular vibrating screen, which mainly consists of a screen box, a screen, a vibrator, a damping spring device, a chassis, a suspension (or support) device, and a motor. Secondly, we must understand the selection of materials, because the selection of materials is related to the quality and whether the screening efficiency and accuracy can meet the requirements in the subsequent use. There are two types of materials, one is that the whole machine is made of stainless steel, and the other is that the parts contacting the material are made of stainless steel. Both have the characteristics of wear resistance, long life, and corrosion resistance. High materials have higher efficiency but higher prices. Generally, materials have lower efficiency but moderate prices. We can choose according to our own needs.

The above gives you a detailed introduction to how to purchase circular vibrating screens. Nile Machinery has rich experience and strong technical strength and can provide users with a free consultation, model selection, quotation, design, and production line services.

For more information, please visit black finish stainless steel.