Why are the mineral processing machinery and equipment in our country so poorly wear-resistant?
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Our country is vast and rich in natural resources, with abundant mineral assets, but do you know? We also rank among the leaders in terms of wear and tear on mining machinery; the losses resulting from such wear each year amount to several billion yuan. Take the ball mill, which is commonly used in the mineral processing industry, for example. Surveys and statistics show that in China, for every ton of ore processed, the wear of the ball mill linings amounts to 0.2 kg ； In the United States and Canada, processing one ton of ore results in only 0.05 kg of wear on the ball mill linings. Our level of loss is four times that of the United States and Canada. Is it due to the material of the equipment? Or is it some other reason? Industry experts are welcome to answer questions!
The last edit to this post was made by 3983596_FPPZ on 2019-3-25 at 15:16. 1. The main issue lies in the quality of materials; (1) Due to overall environmental factors, the performance standards of raw materials in our country (mainly referring to various types of materials) are inferior to those in Europe and the United States. In order to accommodate the capabilities of different industries, **the standard requirements are also lower； (2) The material specifications provided by the supplier do not meet the standards; substandard materials are used in place of high-quality ones, and both the chemical composition and mechanical strength of the materials are compromised due to poor quality control, failing to meet the required standards ； (3) The manufacturing process cannot ensure quality; processes such as heat treatment, forging, casting, welding, machining, assembly, and testing can very easily lead to a decline in quality standards or even loss of control over quality, resulting in products that may look the same but perform poorly in actual use. 2. The next issue relates to problems in usage and maintenance: inadequate routine maintenance, improper operation methods, rough handling of the equipment, and the tendency to avoid repairs until problems arise; when repairs are necessary, makeshift solutions are used, which results in a reduced service life of the product. 3. Lastly, there is the issue of exceeding the specified range of use; the process parameters are not properly controlled, resulting in materials that should have a certain hardness and size but do not meet those requirements, which leads to the equipment being used beyond its designated limits ； Overloading: In an attempt to increase equipment utilization and output, the load on the equipment is increased arbitrarily, with the hope that one piece of equipment can perform the tasks of two, handling the volume equivalent to two units. Coupled with continuous operation, there is almost no time for maintenance, so it’s surprising when no problems arise. But there is one advantage: the low price and timely service, which foreign equipment cannot match. As the saying goes, you get what you pay for; this principle should be considered objectively, without constantly comparing one’s own shortcomings to others’ strengths.
It’s mainly issues with the materials and heat treatment