Due to the problems in the size matching of the inner cavity of the shovel head of the bucket tooth part that began trial production, the improper operation during the grinding process resulted in cracks in the inner groove of the square hole of the shovel head, and the...
The bucket teeth are made of resin sand, the shovel head is made of non sun casting technology, and the shovel seat is made of riser and cold iron. Because the shovel head and shovel seat are used in the blank state, it increases certain difficulty for casting production....
Heat treatment is mainly to change the as cast structure of bucket teeth and change the as cast martensite into tempered martensite after heat treatment. Due to the different stress of the shovel seat and the shovel head in use, there are different requirements for hardness. In order to...
Selection of bucket teeth material according to the service condition of bucket teeth, while summarizing the shortcomings of high manganese steel bucket teeth in use, we carried out chemical and metallographic analysis on the imported bucket teeth. The imported bucket teeth are made of high silicon steel with high...
Excavators are widely used in mining, civil engineering, water conservancy and national defense projects. Bucket teeth are not only important parts of the machine, but also vulnerable parts. At present, most of the excavators used in Qingdao are imported excavators. Because the geology of this area is different from...
1.Impact of carbon It can be seen from Fig. 1 and Fig. 2 that the toughness of steel decreases with the increase of carbon content, and the hardness increases. This is mainly because carbon not only strengthens the matrix in steel, but also increases the hardenability of steel. Although...
1.Influence of liquid iron level on mixing state in transition zone It can be seen from the experimental results that under the condition of molten iron with the same viscosity, the mixing degree between molten steel and molten iron after entering the bucket teeth varies with the height of...
Carbon is the main element in steel and plays a decisive role in the matrix structure of steel. A small amount of carbon is dissolved in ferrite, and the rest exists in the form of cementite. Carbon is the main element of strengthening, but in order to reduce the...
Most of the shovel teeth of roadheader work in the environment of high impact, high wear and high hardness, so the materials must have high impact toughness and high hardness. Bainitic steel has good comprehensive mechanical properties and relatively low cost, which has attracted much attention in recent years....
The bucket of mining excavator is the main working part of excavator equipment. Its bucket teeth consume a lot in bad working environment. If the bucket teeth fail, it will not only accelerate the consumption of bucket, but also affect the subsequent mining crushing operation and cause serious economic...