Gear material (reading material)

Gears are made of various materials, both metallic and nonmetallic.

Gears are made of various materials, including metallic materials and nonmetallic materials.

As with all materials used in the design, the material selected for a specific gear should be the cheapest to ensure satisfactory performance.

When a variety of materials can be used in the design, the cheapest material that meets the use requirements should be selected for a specific gear.

Before making a choice, the designer must decide which of several criteria is the most important to the problem at hand.

Before making a choice, designers must decide which of the many design standards is the most important.

If high strength is the primary consideration, steel should usually be chosen instead of cast iron.

If high strength is the first consideration, steel is usually chosen instead of cast iron.

If wear resistance is the most important consideration, non-metallic materials can be made for noise reduction problems. The performance of materials is better than that of metals.

If wear resistance is the most important factor, we can choose non-metallic materials that are better than metallic materials, and at the same time, we can solve the problem of reducing noise.

However, like most design problems, the final choice of materials is usually a compromise.

However, in most practical design problems, the final decision of materials is often a compromise.

In other words, the selected material will meet all the requirements mentioned above quite well, although it may not be the best in any field.

In other words, the selection of materials should take into account the reasonable realization of all predetermined requirements, although it can not achieve the best in any of them.

In order to summarize this discussion, we will consider the characteristics of various metal and nonmetal gear materials according to general classification.

In order to summarize this discussion, we will consider the characteristics of various metal and nonmetal gear materials according to the usual classification.

cast iron

cast iron

Cast iron is one of the most commonly used gear materials.

Cast iron is one of the most commonly used gear materials.

Its low cost, easy casting, good machinability, high wear resistance and good noise suppression make it a reasonable choice.

It has the characteristics of low cost, good castability, good machinability, high wear resistance and high noise reduction, which makes cast iron a suitable choice.

The main disadvantage of cast iron as gear material is its low tensile strength, which makes the bending strength of gear teeth low and requires quite large teeth.

The main disadvantage of cast iron is that as a gear material, the tensile strength of cast iron is very low, which makes the bending strength of gear teeth very weak and it is impossible to manufacture large gear teeth.

Another type of cast iron is nodular cast iron, which is made of cast iron with magnesium or cerium added.

Another kind of cast iron is nodular cast iron, which is made by adding magnesium or cerium to ordinary cast iron.

The result of this alloying is that the material has much higher tensile strength, while maintaining the good wear resistance and machining characteristics of ordinary cast iron.

This alloy is characterized by high tensile strength and wear resistance, and excellent cutting performance of ordinary cast iron.

The combination of cast iron gear and steel pinion usually provides a well-balanced design in terms of cost, strength and wear.

The combination of general cast iron gear and steel pinion can achieve a good balance between cost, strength and wear resistance.

Supplementary question: Steel gears are generally made of carbon steel or alloy steel.

Steel gears are usually made of carbon steel or alloy steel.

Compared with cast iron, they have the advantage of higher strength without excessively increasing the cost.

They have higher strength than cast iron without excessively increasing the cost.

However, they usually require heat treatment to produce a hard enough surface to provide satisfactory wear resistance.

However, they usually need heat treatment to form a hardened layer on the surface to obtain sufficient wear resistance.

Unfortunately, heat treatment usually distorts gears, resulting in uneven distribution of gear load on the gear tooth surface.

Unfortunately, heat treatment usually distorts the gear, so that the load on the gear cannot be evenly distributed to the surface of the gear teeth.

Because alloy steel is more easily deformed by heat treatment than carbon steel, alloy steel is usually preferred over carbon steel.

Alloy steel is more suitable for heat treatment than carbon steel because of its small deformation. They are usually used much more than carbon steel.

Although the purpose here is not to discuss various heat treatment methods and their effects on the properties of heat-treated materials, designers should know that

Problems that may occur when using heat-treated materials.

Although the purpose of discussion here is not the methods of heat treatment and the different effects of these methods on materials, designers should be aware of various problems that may be brought about by choosing materials without heat treatment.