Optimized management of the hottest printing equip

2022-08-06
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Optimization management of printing equipment (Part 2)

the cost of equipment maintenance has always been one of the important expenditures of newspaper printing enterprises. It is very necessary to use value engineering to conduct comprehensive analysis in equipment maintenance, determine the most economical maintenance scheme, and implement scientific maintenance management. For example, if a gear of a printing machine is damaged, whether it is imported from the original factory or processed domestically requires value engineering analysis and calculation. This will not only save money, but also make the decision-making of relevant leaders scientific. In order to explore the economy of maintenance work, the maintenance cost must be comprehensively balanced with equipment deterioration and loss. With reference to the supply guarantee coefficient of raw materials, the maintenance guarantee coefficient can be formulated as a control means. If the ratio of equipment maintenance cost to the sum of equipment deterioration and shutdown loss can be used as the coefficient, if the coefficient is greater than 1, it is excess maintenance; Less than 1 indicates insufficient maintenance. According to the timeliness of the newspaper industry, this coefficient can be appropriately increased

2. Life cycle cost evaluation method

in the introduction of equipment, the idea of the whole process management of equipment is used for analysis. The economic evaluation method of equipment life cycle cost can be used to make decisions on equipment investment strategy. That is, in the purchase of equipment, we should not only pay attention to the purchase cost of equipment, but also calculate the use cost of equipment, that is, comprehensively calculate the cost of the whole life cycle of equipment to obtain the best scheme. The economic evaluation of equipment can be calculated by annual cost method and present value method, and the life cycle cost of different schemes can be calculated for scheme comparison

3. Technical and economic indicators of management

two achievements should be made in equipment management. One is that the "light utilization" of graphene is concerned, which is the best technical state of the equipment, and the other is that the maintenance and management costs are the most economical. This is an important indicator to assess the effectiveness of equipment management. In the technical status index, it is mainly expressed by the equipment intact rate or failure rate. The equipment failure rate represents the proportion of the total number of intact equipment to the total number of 108 units of the total equipment party that have raised the construction of ecological civilization to the overall height of the cause of socialism with Chinese characteristics. The failure rate is expressed by the ratio of failure downtime to the total production operation time. In economic indicators, it is generally expressed by the maintenance cost or maintenance cost rate of unit product output value, and the maintenance cost rate is expressed by the ratio of maintenance cost to total production cost. These indicators can be further refined to workshops or departments to assess work effectiveness

v. repair and maintenance in equipment management

due to the characteristics of newspaper production and equipment, the repair and maintenance of equipment is very important for the normal production and the improvement of economic benefits of newspaper printing enterprises. We should further use the experience of equipment maintenance in industrial enterprises, combined with the characteristics of newspaper printing equipment and production, and constantly explore the management experience suitable for the characteristics of the newspaper industry

1. Maintenance

the purpose of maintenance is to timely deal with a large number of common problems caused by the development and change of technical conditions during equipment operation, so as to ensure equipment operation and prolong service life. The main work of maintenance includes cleaning, lubrication, fastening, adjustment, etc. generally, the three-level maintenance system is implemented, that is, routine maintenance, primary maintenance and secondary maintenance. Some newspapers implement daily maintenance, monthly maintenance and annual maintenance systems. Due to the strong continuity of production in the newspaper industry and most of them are night shifts, the maintenance of some newspapers is not strictly implemented, which should be paid enough attention, and supervision should be strengthened through various necessary means. At the same time, daily inspection, regular inspection and condition monitoring of equipment shall also be carried out

2. Repair

the essence of equipment repair is material wear compensation. Its basic means for low precision is repair and replacement, so that the efficiency of the equipment can be restored. At present, the maintenance systems adopted by the newspaper industry mainly include planned preventive repair and maintenance repair systems. The main content of the planned preventive repair system is the graded maintenance system of minor repair (partial repair), medium repair and major repair (planned repair). The characteristic of the maintenance and repair system is to break the division of labor between operators and maintenance personnel. The operators are responsible for equipment maintenance and repair, and the operators' participation in equipment management is specific and institutionalized

according to the fault theory and fault law of the equipment, the modern preventive maintenance system (PM) is characterized by the combination of various maintenance methods. Specifically, it mainly includes daily maintenance, post maintenance, preventive maintenance, production maintenance, improved maintenance, predictive maintenance, etc. the preventive maintenance system is an advanced system to improve the maintenance management level of newspaper printing equipment, improve production guarantee efficiency, and reduce maintenance costs

3. Rules of equipment wear and failure

simply speaking, equipment wear can be divided into three stages: initial wear period (severe wear), normal wear period (slow wear) and severe wear period (severe wear). Corresponding to the above three stages, the fault law of the equipment is that there are more faults in the initial stage, less faults in the middle stage, and more faults in the later stage. The development and change shape of the fault rate is like the bathtub section, which is generally called "bathtub theory"

4. Selection of equipment repair methods

at present, out of the understanding of the importance of equipment in the production system, the phenomenon of excess maintenance is common, a large number of spare parts are stored, and there are too many backup machines. In the case of strengthening management, how to choose a reasonable maintenance mode is also very necessary

select repair methods according to different fault types: different repair methods can be adopted according to different fault types of different equipment, enterprise conditions and production needs. For example, some equipment (such as Imagesetter, scanner, etc.) with high repair costs and difficult parts replacement, but the fault can be monitored, can be subject to condition based predictive maintenance; For machines (such as computers) with regular faults, low maintenance costs and easy replacement of parts, regular repair based on time can be implemented; However, if preventive repair cannot be carried out, it can only be carried out after the event

select the maintenance method according to economy: This is a quantitative method, that is, add the post repair cost, preventive maintenance cost, condition monitoring cost and shutdown loss cost, and select the maintenance method with the minimum required cost. Due to the strong timeliness and continuity of newspaper production, large downtime losses and acceleration of the upgrading of plastic granulator technology, predictive maintenance should be carried out for key equipment, which covers a wider range than book packaging and printing enterprises

select the repair method according to the deterioration form: regular repair is carried out for the old equipment with increased failure, post repair can be selected for the mature equipment with stable failure, and predictive maintenance is carried out for the new equipment with reduced failure. Of course, predictive maintenance is also the best choice for old and mature equipment

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