Tungsten Steel Roller Press Stud PM Sintered Parts
The causes of damage to the surface of the stud roller for cement raw materials are briefly introduced. In order to study how to improve the service life of the studded roller, a test was carried out on the same position of the same roller with different grades of cemented carbide studs from different manufacturers. Through the test, it was found that It is necessary to correctly select the stud grade, improve the manufacturing quality of the stud, and ensure that the roller press forms a good material cushion, so as to improve the operation cycle and service life of the roller press, and reduce the breakage, peeling and severe wear of the stud.
Product Introduction
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Tungsten steel roller press stud PM sintered parts |
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Item |
Material |
Production Process |
Sintering Temperature |
Mold |
Custom |
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Tungsten steel roller press column nail powder metallurgy |
Carbide |
Powder metallurgy pressing |
1380℃ |
To be customized |
Yes |
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Available Materials |
Low carbon stainless steel, titanium alloy (Ti, TC4), copper alloy, tungsten alloy, hard alloy, high temperature alloy (718, 713) |
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Smoothness |
Dimensional accuracy |
Product density |
Appearance treatment |
Appropriate weight |
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Roughness 1～5μm |
(±0.1%～±0.5%) |
7.3-7.6g/CM³ |
According to customer requirements |
0.03g～400g) |
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The causes of damage to the surface of the stud roller for cement raw materials are briefly introduced. In order to study how to improve the service life of the studded roller, a test was carried out on the same position of the same roller with different grades of cemented carbide studs from different manufacturers. Through the test, it was found that It is necessary to correctly select the stud grade, improve the manufacturing quality of the stud, and ensure that the roller press forms a good material cushion, so as to improve the operation cycle and service life of the roller press, and reduce the breakage, peeling and severe wear of the stud.
Tungsten carbide stud rollers have been widely used in raw material roller presses in the cement industry, and are favored by the cement industry because of their stable production operation rate and long service life. The material of the cemented carbide stud for the roller press belongs to the tungsten-cobalt cemented carbide, which is a kind of high hardness and high strength produced by powder metallurgy process with tungsten carbide (WC) as the matrix and cobalt (Co) as the bonding phase. It is also a wear-resistant material with good impact resistance. The HRA hardness of cemented carbide studs is about 87, which can greatly improve the service life and work efficiency of the roller press, and has high wear resistance, but its shear resistance is poor, and it is easy to break or break during actual use. accelerated wear and tear, etc. During the production and operation of the studded roller, the studs are subjected to severe high-stress abrasive wear, shear force damage, and long-term fatigue damage. During the operation, the studs will break, peel off, and be severely worn, which will affect the rolling pressure. The output and service life of the machine, so the performance of the cemented carbide stud becomes the key technical index of the stud roller.
How to effectively solve the problem of becoming a cement equipment manufacturing industry?
1. The structure and performance of the cemented carbide stud roller
1.1 Structural form of cemented carbide stud roller
The stud roller needs to rely on the high wear resistance of the studs to crush the material, but the high hardness of the studs itself produces a large stress deformation on the base material of the roller sleeve. At present, most roller press manufacturers use special glue to connect the studs to the mounting holes of the base material of the roller sleeve. The bonding strength between the studs and the stud holes directly determines whether the studs can be stably held on the roller surface. Therefore, an effective way to ensure that the studs on the roller surface do not fall off requires strengthening the strength of the stud hole walls, selecting high-strength adhesives, and using an interference fit to install the studs.
During production and operation, the material pad protection layer formed between the studs prevents the base material of the roll surface from being directly worn by the material. Since the cemented carbide stud roller is in production and operation, the studs have to withstand high-strength abrasion under high pressure. Particle wear, fatigue wear, material impact force shear force, etc., so the service life of the stud and the protective material layer of the pad complement each other.
1.2 Properties of tungsten-cobalt cemented carbide studs
The main performance indicators of tungsten-cobalt cemented carbide studs include hardness, bending strength, impact toughness, and bending magnetic force. Generally, the higher the hardness of the material, the better the wear resistance; the higher the bending strength, the better the fatigue resistance; the better the impact toughness, the better the fracture resistance. There are many factors that affect the performance index of Tungsten steel roller press stud PM sintered parts. Generally, the higher the cobalt content, the higher the flexural strength and impact toughness, but the hardness and flexural strength decrease accordingly. Therefore, only the performance index that meets the specific application conditions can be selected. High-quality carbide studs can be beneficial to the stable formation of the protective layer of the material pad and can maximize the service life of the roller press.
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