Fig. 7. Geometries and formulations tested in the project are shown here.


Ȕ超级合金ȕ项ऩ ֣ И测ડङәѾৈ构չ 配方


matrix where differ- ent materials (low and medium alloy steels, manganese steels and stainless steels), various sizes (small: less than 25kg, medium: 25 to 150kg, and large: up to 4,000kg) and batch sizes (single part and mass production) were recorded together. In all cases, the same model is found to approach the


problem: • Feeder design is well taken care of • Filling system design is not taken into account, only the choice of the pouring method being mentioned (basin or direct pouring) In the experimental stage, both the modeling and the


validation of these calculation methods are studied, paying special attention to the yield optimization. Prior to reaching for any industrial application, verifications are made by using simulation tools in whose databases the thermo-physical characteristics for the feeding device mixes have been uploaded. As previously stated, all efforts are exclusively focused on


the redesign of the feeding systems which apply the thermal modulus criterion as a priority. When building the concept of the feeding system, several


factors are considered. Te most important of them being: contraction, feeding distance, volume to be fed and modulus. Te combination of these variables must be balanced


through the use of advanced simulation tools in such a manner that calculations are notably simplified and gain in reliability. Two priority working lines have been established, deepen-


ing on the areas of contraction/modulus. • Contraction. The contrac- tion model that has been applied is built in three phases: liquid contraction that depends mainly on the


ਙ QM）չ批 ם 量（单Зչ批量生 ֨。合ু量Պङ）ф 用采都Јӑە有۱ 理ה式模ङ样գд 问题： ș 重ંӈՍङ


ગઋ


ș 浇注系统ङગઋЉеৰਖ਼，Ց提ӱ浇注方法ङ选 择（浇Ս盆或फ接浇注）


ઋп这ث，标ऩО化ѩ率սӟљ要П，段阶验实֨ ӹ用应化Џ工੧进֨。९ूд੧进ઍेչ模建ङ法方算 理物热ङ置装ঢ়੭й用ر并，验检੧进Ӏ工拟模д用҅ ङҁ工有۱，述۱Їײ。库据数ङў软ਙѮЇ数Հ性特 。统系ঢ়੭ङӕ标数模热用҅үѩઋગ新重й֨都心核 要重最Иҿ，প֜Зәдਖ਼ৰ时统系ঢ়੭ઋગ֨


ङ是：收ঢ়、੭ঢ়距ख़、੭ঢ়液量չ模数。必须通过显 这ثӀ工拟模ङ进ү用҅式方ङ靠Օҿ҅并算ઋ化এੋ Дд立建ҵ深ֿ领数模 ঢ়收ث。੫平љ加合ু量Պп 条ѩүৰਖ਼ङ工ҁӕө。 合ं要П：段阶ЗІ有Ӏ型模ঢ়收ङ用֨。ঢ়收 ș ङ֠ਸ֡凝金合йӐՈ，ঢ়收ہ液ङ起引热过金 收य़ДӹثՕ统系ঢ়੭。ঢ়收ब֡Ճљঢ়收֡凝 ঢ়ф生影ր，আІय़ө遵循合金ङ物理性ਈ，Љ ਈੴ明显改Պ。 ș 热模数。ગઋङ一


Fig.8. This manganese steel part shows the results of a convention- al riser (far left) versus mini-riser (middle and right).


锰钢铸ўѮ统ӈՍ 最左 ֣ չ微型ӈՍ И间չ右边 性 ثਈ


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