TAILIEUCHUNG - Foseco Non-Ferrous Foundryman’s Handbook Part 15

Tham khảo tài liệu 'foseco non-ferrous foundryman’s handbook part 15', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 268 Foseco Non-Ferrous Foundryman s Handbook than the pouring temperature . Read expansion or shrinkage S expressed as a percentage on the horizontal axis. c Mould wall movement M depends on the hardness of the mould and can vary from zero for hard silicate or resin moulds to 2 for green sand moulds with a mould hardness of 85 B scale . Add the mould wall movement from the expansion to give a final value of S. If this is positive or zero the casting will not need feeding. d The weight of metal in the feeder under consideration WF . The total weight of casting WC which can be fed from a feeder of weight WF is WC C 100 X 100 S X WF 11 If the total weight of casting section Wt which requires feeding is greater than WC then increase the dimensions of the feeder until WT WC . WF WT X 100 C X S 100 12 4. Calculate the dimensions of the feeder neck a Top feeders No calculation of feeder-neck dimensions are required. If possible feeder sleeves should be used with breaker cores. b Side feeders The required feeder-neck dimensions are obtained from the calculation of the neck modulus MN by applying the ratios MC Mn Mf 7 ST 100 ST 100 then using either the endless bar equation Fig. g or the diagram in Fig. . Foseco feeding systems Introduction Foseco provides complete feeding systems for foundries comprising Sleeves - insulating and exothermic for all metals Breaker cores - to aid removal of the feeder from the casting Application technology - to suit the particular moulds and moulding machine used Aids to the calculation of feeder requirements Feeding systems 269 Range of feeder products The Foseco range of products comprises Product name Type Application casting alloy Remarks KALMIN S Insulating Al Cu base iron steel extend solidification time by KALMINEX 2000 Insulating and exothermic iron steel extend solidification time by FEEDEX HD Highly exothermic iron steel small riser-to-casting contact area use where application area is .

TỪ KHÓA LIÊN QUAN
Đã phát hiện trình chặn quảng cáo AdBlock
Trang web này phụ thuộc vào doanh thu từ số lần hiển thị quảng cáo để tồn tại. Vui lòng tắt trình chặn quảng cáo của bạn hoặc tạm dừng tính năng chặn quảng cáo cho trang web này.