Introduction
Introduction of the reasons for the failure of coal picks and the factors affecting the price of the products
Coal pick is an essential mining equipment accessory for coal mining, and it is the main tool for coal falling and coal crushing.
Coal picks are divided into two categories: shearer picks and roadheader picks. The roadheader pick is a part of the mining roadheader; the shearer pick is used in conjunction with the shearer, and is suitable for coal mining.
Because the picks often work u
Details
Introduction of the reasons for the failure of coal picks and the factors affecting the price of the products
Coal pick is an essential mining equipment accessory for coal mining, and it is the main tool for coal falling and coal crushing.
Coal picks are divided into two categories: shearer picks and roadheader picks. The roadheader pick is a part of the mining roadheader; the shearer pick is used in conjunction with the shearer, and is suitable for coal mining.
Because the picks often work under the conditions of high impact and high stress, they are prone to failure, which affects the cutting efficiency of coal and rock and the economic benefits of coal mines. In order to further improve the mechanical properties of the pick and reduce the damage of the pick, it is necessary to analyze and judge the reasons for the failure of the pick.
The reasons for the failure of coal picks and the factors that affect the price of the product are introduced as follows:
1. After a long period of investigation and analysis, the reasons for the failure of coal picks are summarized as follows:
1. Carbide head quality problem. Due to graphite impurities, uneven grain distribution, insufficient toughness, and poor brazing quality at the head of cemented carbide, the pick will fall off, crack and fracture under impact load and high stress, and the toughness will decrease.
2. Abrasive wear. During the working process of the pick, a large compressive stress is generated between the magic particle and the pick surface, which makes the pick surface form micro-cutting. With the increase of the working time of the pick, the abrasive particles repeatedly accumulate on the surface of the pick, which leads to the deformation of the pick and the decrease of the mechanical properties.
3. Damage to the pick body Due to the poor material and forging process of the tooth body, and the lack of toughness and strength of the pick body, it is easy to cause the pick body to break and bend. Therefore, 42CrMo steel should be selected as the gear body material. At the same time, according to the use conditions and performance requirements of the material, a targeted heat treatment design is carried out to improve the overall performance of the pick and prolong the use time of the pick.
Second, analyze the factors that affect the coal pick.
1. Product quality The manufacturing process of the pick, the size of the pick alloy and whether there is a wear-resistant layer will affect the price of the pick.
2. The performance of research and development innovative products is the key to the survival of enterprises. Whether the surface of the pick is smooth and delicate, whether the structure is reasonable, whether the performance of the pick is stable, how much is lost during use, and whether it is easy to install and disassemble. These are inseparable from the long-term efforts and innovation of professional R&D personnel; the continuous development of scientific research personnel: scientific research will also affect the price of delivery.
3. Market influence Any product will be affected by the market environment. For example, fluctuations in the coal mining industry can also affect the market conditions of related industries. Like other mining equipment accessories, the price of pickaxes will change with the changes in the market economy.
4. After-sales service Perfect after-sales service is the embodiment of the strength of the pick manufacturer. Some manufacturers will provide after-sales service, while some cheap manufacturers will not provide such after-sales service, please consult clearly before purchasing.
5. Labor costs As we all know, labor costs have been rising in recent years, and the rise of enterprise labor costs also affects the rise of product costs.
