Material consumption quotas are usually set separately by major raw materials, auxiliary materials, fuels, power and tools. There are three basic methods for setting the quota of material consumption:
First, technical calculation method
This method is the main method of formulating the quota of material consumption. Firstly, according to the product parts drawing and process data, the shape and size of the product parts are analyzed and calculated to determine the net weight. Then, technical analysis is performed on each process to determine the portion of the process loss. Adding these two parts is the material consumption quota for the part. The advantage of this method is that it has sufficient technical basis and the developed quota is more advanced and accurate. The disadvantage is that the calculation is heavy. Generally, this method is adopted when the production quota of major raw materials is determined for products with large output and complete drawings.
Second, the actual measurement method
This method is to determine the material consumption quota by means of actual measurement or weighing on site. Generally used for paint, tin plating, zinc plating and paint.
Third, empirical statistics
This method is based on the actual production experience of technicians and old workers or the statistics of past material consumption, and the material consumption quota is determined taking into account changes in production, technology, organization and other conditions during the planning period. The advantage of this method is that it is simple and easy to operate. The shortcomings are not accurate enough, scientifically poor, and it is difficult to reflect the advanced level. This method is generally used for new product trials, furnace consumption and auxiliary materials.
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