Abstract: steel and steel production enterprises are one of the typical sintering enterprises, and sintering equipment is their main production equipment. In order to ensure the efficient, stable and safe operation of the sintering operation, the sintering equipment needs to be inspected and maintained in order to ensure its stability. The article outlined the necessity of conducting spot-checking and maintenance of sintering equipment, followed by an analytical study on how to effectively perform equipment spot-checking and maintenance。
Keywords: sintering enterprises; spot-checking maintenance; analytical exploration; sintering equipment
1 introduction
As typical sintering enterprises, the level of automation of production in steel enterprises has improved considerably in recent years, with higher requirements in terms of production safety, production efficiency and product quality. With a view to improving the social competitiveness of enterprises, they are vigorously developing mechanical automation, constantly introducing new equipment and gradually moving from manual to semi-automatic to fully automated production patterns. The large amount of production equipment that has been introduced has considerably improved the productivity of enterprises and the quality of their products, but, owing to poor spot-checking and maintenance of sintering equipment in most enterprises, the equipment management model is inadequate, resulting in the failure of sintering equipment to remain stable and efficient over time. As a result, the introduction of new equipment and technologies should be accompanied by the screening and maintenance of equipment so that it remains safe, efficient, stable and reliable in order to perform its production tasks. This is the focus and difficulty of the equipment sintering management. Most of the sintering enterprises are currently doing more than enough in terms of equipment control and maintenance, which requires in-depth exploration, analysis and improvement. Unlike other equipment, sintering equipment is often found in a harsher environment, with large quantities of equipment for the sintering of the production system, dispersed layouts, heavy wear and tear during the production process, difficulties in conducting relevant equipment spot-checking maintenance and a much larger workload than general-purpose equipment; in addition, most enterprises have a misperception of heavy production and light maintenance in equipment management, resulting in high failure rates for the sintering equipment, a generally low life of the equipment, high failure rates and high maintenance costs. In conclusion, to ensure efficient and high-quality production, sintering enterprises need to improve routine check-up and maintenance of sintering equipment, change existing models of equipment management and introduce new concepts of production and management。
2. Importance of spot-checking and maintenance of sintering equipment
2. 1 quality assurance and production efficiency of products
The sintering process is more continuous and closely linked, and if there is a problem with a link, the whole sintering process is affected and the sintering cannot take place. The equipment failure rate must be maintained at a low level in the enterprise's production, otherwise it would disrupt the continuity of the production system, leading to poor inter-process connections and inefficient production; in the case of older equipment previously held by the enterprise, the equipment could not be produced in a stable state without the maintenance of scientifically sound points, without control of the process parameters and guaranteed product quality。
2. 2 reduce production costs and consumption
In the day-to-day production of sintering enterprises, the consumption of raw materials and the state of equipment are closely related, stable and good equipment can reduce energy consumption and ensure that the quality of the product is maintained at a higher level; on the contrary, a high rate of equipment failure and the stability of process parameters can result in the production of a large number of substandard products, resulting in double waste of manpower and material resources. On the other hand, the long-term poor maintenance of equipment inevitably results in poor equipment lubrication conditions and severe wear and tear, which results in the early end of the equipment before it reaches its design life, and increases the cost to the enterprise of equipment management。
2. 3 modernization of enterprise production
In the case of newly introduced equipment, routine spot-checking and maintenance would reduce the wear-off period of the equipment, speed up the start-up of the new equipment, speed up the start-up of the new equipment, speed up the turnover of old and new equipment, speed up the upgrading of completed equipment and facilitate the transition from enterprise to modern production。
3. Characteristics of maintenance of sintering equipment
3. 1 maintenance workload
The larger amount of equipment in the sintering enterprise and its scattered distribution within the enterprise make it difficult to check and maintain the equipment, making it more difficult to do so. Long process processes for sintering equipment, large variety of equipment throughout the production system, e. G., dispensers, sinterers, circulators, etc., and high levels of equipment retention resulting in high level of equipment spot maintenance it is cumbersome and, at the same time, it is difficult to check and maintain the sintering equipment because of the large number of production processes, the low distribution of equipment and the distance between processes。
3. 2 maintenance is difficult
The poor operating environment of the equipment in the sintering enterprise, such as high dust, humidity, vibration and heat, has a negative impact on the operation of the equipment, which exacerbates the wear and tear of the equipment and leads to an increased failure rate of the equipment, which also makes it more difficult to conduct spot-checking and maintenance of the equipment. The complexity of the sintering equipment construction, the number of critical points and the number of types of failure that may occur, as well as the fact that many of the malfunctions may require systematic and comprehensive screening to be resolved, place higher demands on the spot-checking and maintenance of sintering equipment。
3. 3 high level of lubrication operations
The production of sintering equipment is often accompanied by visible mechanical vibrations and heavy loads and wear and wear, and a large amount of lubricant is usually added to reduce wear and vibration effects. For example, continuous lubrication to ensure operational stability is required in units such as slipways, bearings, gearboxes and gears of equipment. Different mechanical structures, different forms of mobility, leading to different types of lubricants, including liquid lubricant, semi-solid lubricant, solid lubricant, etc., and much of the lubrication operation is a feature of the daily maintenance of sintering equipment。
4 maintenance of sintering equipment
4. 1 importance of equipment spot-check maintenance
First, emphasis should be placed on equipment testing and maintenance in terms of equipment management, adequate awareness of the importance of equipment inspection and maintenance, and increased staff development and technical equipment support for equipment maintenance. In addition, attention is paid to training and mentoring equipment maintenance staff, increasing theoretical knowledge of sintering equipment, ensuring that maintenance personnel are certified to take up duties, holding regular maintenance experience-sharing meetings to allow equipment maintenance staff to theoretically integrate and improve the quality of equipment. The equipment management department is to establish a robust equipment spot-check system, conduct site-checking, specialized site-checking and professional spot-checking alternately, re-engineer the operation of equipment in accordance with the point-checking cycle, carry out planned equipment spot-checking, facilitate early equipment maintenance, maintain equipment performance stability, reduce equipment failure rates and guarantee the performance of enterprise production。
4. 2 enhanced process control for equipment spot-check maintenance
The maintenance of equipment in a sintering enterprise needs to be adjusted in a timely manner in accordance with the company's production schedule, the state of the equipment, etc., and appropriate time frames for the inspection and maintenance of the equipment, depending on the condition of the equipment. In the case of calibration of equipment, the equipment can be packaged, each of which has a dedicated personnel to perform the check-up, a system of equipment check-and-check-and-check and distribution of equipment spot-check maintenance to individuals. When equipment is inspected and maintained, security is ensured. Visible markings are set up at the point where the equipment is stopped and maintained, it is strictly prohibited to remove the signboard or to turn on the equipment during maintenance and to ensure the safety and security of the personnel. When maintaining equipment, care is taken to ensure that the rules of operation, the violent dismantling of the equipment and the irregularity of the operation are strictly prohibited. The equipment management authority may conduct inspections and inspections, supervise the maintenance of the equipment, conduct inspections and inspections of the results of the maintenance, and strictly control the quality。
4. 3 focus on innovation in maintenance methods and technologies
Innovations are the driving force of progress, equipment maintenance work models and technologies need to be kept up to date, and the maintenance management of equipment needs to take care to optimize the work model, move from the previous passive maintenance model to the active maintenance model, increase the initiative to maintain equipment, actively screen for hazards and problems, depending on the state of operation of the equipment, and then work flexibly on maintenance, combining regular maintenance with occasional active maintenance, increasing the targeting and flexibility of maintenance work. In the day-to-day work, attention should be paid to technological innovation, to thinking about new equipment maintenance methods, to learning from the good experiences of other enterprises in equipment maintenance and to optimizing existing equipment maintenance models. For example, with regard to the serious wear and tear prevalent in sintering equipment, modern automated control systems could be used to upgrade the sintering equipment lubrication system, real-time monitoring of the lubrication status, remote completion of the lubrication work, which would allow for the timely and efficient operation of the equipment lubrication maintenance and reduce the effort of the maintenance staff to perform spot-check maintenance of the equipment。
5 concluding remarks
In the age of automation, the normal production of sintering enterprises needs to be based on the steady operation of equipment. Only enhanced equipment testing and maintenance, preventive equipment management, reduction of equipment failure rates and extension of the equipment's useful life can improve the enterprise's overall economic efficiency and market competitiveness。
