What is the material of the excavator teeth?

It belongs to the second-class wear-resistant steel, manganese steel.

The bottom of the bucket is a grade of steel.

The actual working conditions of the shovel teeth are very harsh, and they are not only subject to wear when they come into contact with the material, but also bear a certain amount of shock load. Therefore, it is of great practical significance to study the new excavator shovel tooth material, improve the service life of the shovel tooth under working conditions, and reduce the economic loss caused by wear. According to the working conditions and performance requirements of shovel teeth, 12 groups of chemical components were designed and a complete set of heat treatment processes were proposed.

In this scheme, through the heat treatment and related testing and theoretical analysis of experimental steels with different compositions, a set of optimal composition ratios and optimal heat treatment processes were found. The shovel tooth parts produced by the experimental steel obtained good comprehensive mechanical properties, that is, the tooth tip part has excellent wear resistance and certain toughness, and the shank part has high toughness and certain wear resistance. The results show that with the increase of carbon content, the hardness of the experimental steel gradually increases, while the impact toughness shows a significant decreasing trend. With the increase of manganese content, the hardness and impact toughness first increased and then decreased.

The optimal chemical composition ratio (wt%) of experimental steels is ,,, by employing mechanical property experiments and metallurgical microscopy.

and scanning electron microscopy.

Energy dispersive spectrometer and transmission electron microscope.

The mechanical properties, microstructure and phase composition of the material were analyzed, and the optimal heat treatment process of the experimental steel was determined, that is, the experimental steel material was normalized at 900.

After that, the hardness value can reach HRC30 HRC38, and the impact toughness value AK 80J cm2; After tempering at 900 1H+290 30Min+200 2H, the hardness value can reach HRC48 HRC54, and the impact toughness value can reach 45 70J cm2. The wear test was carried out under simulated actual working conditions, and the wear of the material was significantly lower than that of the existing shovel tooth material in the factory. After heat treatment, the hardness change of the shovel tooth parts produced by the experimental steel shows a good transition from the tooth tip to the tooth shank, which ensures the optimization of the mechanical properties of the tooth tip and the tooth shank.

The hardness of the tooth tip is HRC48 HRC54, the hardness of the middle of the shovel tooth is HRC40 HRC45, and the hardness of the shank is HRC30 HRC38. Shovel tooth parts for installation test, in the actual production of the mine has achieved good results, its service life is 40 60 higher than the original shovel teeth, and the cost is low, the process is simple, suitable for mass production, can better replace the factory active shovel teeth.

ZW65MN is a heat-treated material, and it has the advantage that the more it comes into contact with something hard, the harder it becomes, like the belly belt of the tank, which is made of this material, which is not afraid of wear, and the more it wears, the harder it becomes.

Hello, the excavator digging bucket tooth plate is generally used for wear-resistant steel plates. There is also high hardness wear-resistant steel according to the use environment. Introduction of high-hardness wear-resistant steel excerpted from French steel High-hardness wear-resistant steel is widely used in mining machinery, coal mining and transportation, construction machinery, agricultural machinery, building materials, electric power, railway transportation and other departments.

For example, the steel balls and liners of ball mills, the bucket teeth and buckets of digging and shelving machines, and the rolling walls, tooth plates, hammer heads of various crushers, etc.

The teeth are ductile iron.

Detailed introduction: According to the environmental classification of the use of excavator bucket teeth. Excavator bucket teeth can be divided into rock teeth (used in iron ore, stone mines, etc.), earthwork teeth (used for digging soil, sand, etc.), and conical teeth (used in coal mines).

According to the bucket tooth holder, the excavator tooth can be divided into vertical pin tooth (mainly Hitachi excavator), horizontal pin tooth (Komatsu excavator, Carter excavator, Daewoo excavator, Kobelco excavator, etc.), rotary digging bucket tooth (V series bucket tooth).

1. The bucket teeth are ductile iron, the tooth emperor is cast steel, the gum is manganese steel plate, the angle knife is also manganese steel, and the main material of the bucket teeth is the general ship steel plate. The ears that attach the forearm are cast steel.

2. A brief introduction to the bucket teeth of the excavator: the bucket teeth of the excavator are important consumable parts on the excavator, similar to the human teeth, which are a combination of tooth base and tooth tip, and the two are connected by pins. Since the tooth wear failure part is the tooth tip, as long as the tip is replaced.

3. According to the environmental classification of the use of excavator bucket teeth. Excavator bucket teeth can be divided into rock teeth for iron ore, stone mines, etc., earthwork teeth for digging soil, sand and rocks, etc., and conical teeth for coal mines. According to the state cavity bucket tooth holder to divide:

Excavator bucket teeth can be divided into vertical pin bucket teeth, horizontal pin bucket teeth, rotary digging bucket teeth.

Wear-resistant steel plates used in general are also high-hardness wear-resistant steels according to the use environment.

An excerpt from the introduction of high-hardness wear-resistant steel of French steel.

High hardness and wear-resistant steel is widely used in mining machinery, coal mining and transportation, construction machinery, agricultural machinery, building materials, electric power, railway transportation and other departments. For example, the steel balls and liners of ball mills, the bucket teeth and buckets of digging and shelving machines, the rolling walls, toothed plates and hammers of various crushers, the track shoes of tractors and tanks, the striking plates of fan mills, railway rut forks, the middle groove plate, groove gang and ring chain of coal mine scraper conveyor, the shovel blade, shovel street and blade plate for bulldozers, and the lining plate for large electric wheel buckets. cone bits for oil and open-pit iron ore perforation, etc.

The above list is limited to applications that are subject to abrasive wear.

The grinding media (steel balls, steel rods and liners) used in ore and cement mills are steel wear parts that consume a lot. In the United States, most grinding balls are forged or cast from carbon and alloy steels, which account for 97% of total foot ball consumption. in Canada.

Steel balls account for 81% of the ball dispensed by consumption. According to statistics. China consumes more than 1 million tons of grinding balls every year, the annual consumption of mill liners in China exceeds 200,000 tons, and the middle groove of scraper conveyors for coal mines in China consumes more than 80,000 tons of steel plates every year.

Wear-resistant steel is generally smelted with an electric furnace or converter, and the products are mostly castings. In recent years, the number of hot-working steels such as forging and rolling is increasing. The production method of wear-resistant steel parts used in general machinery is no different from other workpieces, but it is different in terms of heat treatment or surface treatment process to meet the requirements of wear resistance.

In addition to the matrix, the number, shape and distribution of the second phase have an important impact on the wear resistance of steel, which should be considered from the aspects of chemical composition design, smelting, heat processing and heat treatment. In order to meet the requirements of improving wear resistance from the metallurgical aspect.

Wear generally occurs on the surface of the workpiece, so it is important to strengthen the surface of the workpiece. Steel surface strengthening technology has a long history, in recent decades, a variety of surface strengthening technology and equipment developed rapidly, taking the necessary surface strengthening measures, not only can save a lot of raw materials. The surface layer of the workpiece can be endowed with a variety of special structures and properties that are difficult to obtain from the overall material.

The result is excellent wear resistance and great economic benefits. Nowadays, surface strengthening technology has become an important direction in the research and application of wear-resistant steel.

In recent years, the surface strengthening technology of steel materials has developed rapidly, new technologies and new processes have emerged in an endless stream, and different surface strengthening technologies can be selected for different needs to improve the wear resistance of steel under various wear conditions, and replace expensive alloy steel with inexpensive matrix materials to make workpieces.

You can use wear-resistant steel plates, and if the requirements are not high, you can use domestic wear-resistant steel plates NM400 NM450 NM500 The equipment has a harsh working environment and requires a long wear-resistant life, so you can use imported ones, such as Sweden's hardox400 hardox500, Japan's ABREX400, ABREX450, ABREX500, and Germany, Finland, these We have a standing thickness of 3-120mm, you can choose according to your own use.

Wear-resistant steel plates used in general are also high-hardness wear-resistant steels according to the use environment.

Wear-resistant welding rod for excavator bucket tooth wear, a wear-resistant welding rod with severe sand and gravel wear-resistant with strong impact wewelding630.

Overview of WeWelding 630 Wear Resistant Electrodes.

1. Hard-alloy electrode with severe wear resistance and high impact strength, with alloyed core 2. Chromium carbide weld.

3. High weld deposition rate, with excellent welding slag cleaning characteristics.

4. Designed for wear-resistant, and accompanied by rust peeling, corroded surfaces 5. Easy to weld at any position.

WeWelding 630 Wear-Resistant Electrode Applications.

Furnace furnace strips, dredger teeth, transportation chains, coal screw drilling cavity machine, shovel bulldozer, road construction machinery wewelding630 wear-resistant welding rod technical parameters.

After hardness welding: HRC56-60

First, the bucket teeth are ductile iron.

The Tooth Emperor is cast steel.

The gums are manganese steel.

The plate and angle knife are also manganese steel, and the main material of the bucket is the general ship steel plate. The ears that attach the forearm are cast steel.

Second, a brief introduction of excavator bucket teeth:

The excavator bucket tooth is an important consumable part on the excavator, similar to a human tooth, which is a combination of tooth holder and tooth tip, which is based on a pin.

Connect. Since the tooth wear failure part is the tooth tip, as long as the tip is replaced.

Classification according to the environment in which the excavator bucket teeth are used. Excavator bucket teeth can be divided into rock teeth (used in iron ore, stone mines, etc.), earthwork teeth (used for digging soil, sand, etc.), and conical teeth (used in coal mines). According to the tooth socket to divide the bend:

Excavator bucket teeth can be divided into vertical pin bucket teeth (mainly Hitachi excavators), horizontal pin bucket teeth (Komatsu wide boring excavators, Carter excavators.

Daewoo excavator, Kobelco excavator, etc.), rotary digging bucket teeth (V series bucket teeth).

3. Diagram of excavator bucket teeth: