tailieunhanh - Foseco Ferrous Foundryman's Handbook Episode 15

Tham khảo tài liệu 'foseco ferrous foundryman's handbook episode 15', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 340 Foseco Ferrous Foundryman s Handbook Figure Feeder size calculation. The safety margin required Feed demand from lower section Superheated core or mould section Once all the required inputs have been entered into the left hand side of the Feeder Size Calculation screen the user may select a feeding product from the Selected Product pull down list. Once a product has been selected the FEEDERCALC program calculates the optimum feeder size for the casting under consideration and this information is displayed beneath the product name. The next size up in the product range is also displayed for comparison purposes. The Side Neck Calculation button allows the user to calculate the size of a neck used with a side feeder. The neck modulus provided by the feeder size calculation for the feeder to be used is automatically transferred to this screen. The program then calculates the range of values which one dimension of a rectangular-section neck would have based on this neck modulus. When the most convenient dimension for the casting being considered is entered the second dimension is automatically calculated together with the resulting contact area. Cost analysis Selecting this option allows the cost of a feeding practice for the casting or castings under consideration to be determined. A comparison of two Feeding of castings 341 alternative feeding practices can also be made for example a practice using sleeves compared against one using sand risers . By clicking on the Cost Analysis tab the screen appears. Six items of basic foundry cost data are presented. These are average values estimated by Foseco for the country for which the particular program was designed . The operator may simply accept these and continue onto the Job Cost button or the operator may enter actual costs for the foundry and save this data set by selecting the New or Save buttons. Figure Cost analysis screen. The six basic foundry cost elements are Cost of molten metal in the

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