In the case of stock sale, enterprises need to meet the market demand for their products. In the same outlook period, when there are sales and production needs of multiple products, production should be arranged according to this priority, which is the ideal production mode of the chemical industry.
Since the sales plan of the chemical industry is broken down by stages after annual forecast, the scope of this stage is usually defined by the production or work habits of the enterprise. For example, most enterprises take the week as the cycle to look forward to the production and sales situation within the fixed time range, and their evaluation and development of sales forecast, production plan and production schedule are based on the week as the unit. If the cycle is too long, the data will be coarse, and if the cycle is too short, the sales forecast will not be so fine. Therefore, this cycle should be formulated according to the habit of the enterprise.
Since the chemical industry is mechanized and the accuracy of the formula is strict, the production line needs to be cleaned between the production of different products. As the nature and color of the products may be different, some cleaning work may be simpler, and some cleaning work may be relatively complex. Therefore, it is necessary to define the corresponding cleaning grade data, and define the corresponding cleaning data and cleaning time for the combination of the production order of all products. During production scheduling, the cleaning time will be calculated according to the sequence of products produced and the cleaning instructions will be generated.
The production process of chemical industry is the process of mixed processing of various raw materials in containers. Due to the differences in products and processing technologies, different products have different feeding requirements: time requirements, quantity requirements, frequency requirements, etc.
Since the chemical industry is generally machine production, with relatively stable production capacity and low dependence on human factors, each production task can accurately calculate the production time according to the planned output. Therefore, they are very accurate in the arrangement of production tasks to ensure the minimum idle time of the production line. So their factory calendar is accurate to the minute. In the case of applied shifts, the factory calendar is allowed to span days, but not more than 24 hours (beyond which it is not called a "day" calendar). At the same time, because the products of different production lines are not consistent, the production mode or shift will also be different, so the factory calendar is formulated according to the production line, and different production lines have different factory calendars.
Because the production process of chemical products is similar, the same product may be produced on different production lines, but the capacity is different. So in capacity definition must be the same - product in different production line capacity is defined, and every product must have only one default production line, the production scheduling can priority arrangement on production line by default, then planner can also according to the production situation of part of the production planning and scheduling to other production line production.
The chemical industry is dominated by machine production, and its capacity is relatively stable. It will not increase with the increase of the number of people in the province. The capacity they define is the capacity of the entire production line, which is usually defined as the output in hours (which is too thin by the minute and too thick by the day). In addition, the production line capacity data should be defined at the same time of the production line input container and output container batch, in order to calculate The Times of feeding and generate finished product packaging instructions.
Chemical industry production mode for the process type, high degree of automation, production must be continuous and stable, the production plan is the main task of the how to effectively use the existing devices, with minimal resources, maximize the organization reasonable production, production control mainly through all kinds of instruments, meters, simple production management. The production plan is mainly based on the market forecast, and the production plan formulation is highly flexible. The arrangement of the production plan needs to accurately arrange the daily production plan e according to the production line capacity, batch, n priority, machine cleaning time and so on Focus on the strict control of the production process, each product has a number of feeding plans, and time input, need to effectively manage the production feeding finger Finished products or raw materials generally need batch management, batch traceability, shelf life management, product grade, color, packaging specifications. Multi-measurement unit management, etc.