From the chemical composition, trace element, inoculation and thermal exchange of metal mold casting, the principle of chill formation and the effective methods for preventing chill were studied.
文章从铸铁的化学成分、微量元素、孕育处理及金属型的热交换方面叙述了产生白口的原理及防白口的有效方法。
We can provide customers from product design, mold development, mold making, casting production, precision machining, surface treatment for the integrated enterprise.
我们可为客户提供从产品设计、模具研发、模具制造、压铸生产、精密机加工、表面处理为一体的企业。
Because the mold is formed around a one-piece pattern (which does not have to be pulled out from the mold as in a traditional sand casting process), very intricate parts and undercuts can be made.
由于这种铸型是环绕整块型模形成的(无需像传统的砂型铸造工艺那样拔模)，能制作十分复杂的零件和浮雕。
One method to make casting sand mold directly from the bozzetto (mud draft) of the sculpture is introduced.
介绍一种在雕塑泥稿外直接制作铸造砂型的方法。
The positive can be produced either by direct modeling in wax over a prepared core (direct lost-wax casting), or by casting in a piece mold or flexible mold taken from a master cast.
正像可以用蜡直接在一个准备好的核心上浇铸成型(直接脱蜡浇铸)，也可以浇在一个模具中，或者从主铸件上取下来的柔韧的模具中。
The key issues for bronze gnomon casting with integrated and clear surface in investment casting in plaster mold involves to prevent large plate from deformation and to ensure full mold filling.
日晷由锡青铜铸造，其铸造技术的关键是防止大平面的变形和保证良好的充型以获得完整、清晰的表面。
Abstract: One method to make casting sand mold directly from the bozzetto (mud-draft) of the sculpture is introduced.
文摘：介绍一种在雕塑泥稿外直接制作铸造砂型的方法。
Owing to the design and trajectory of the casting trough, there is achieved an even and rapid pouring from the casting trough to the casting mold.
由于浇注槽的设计和轨迹，达到由浇注槽至铸造模的一个均匀和迅速的浇注。
It is simple process, less pollution, low cost, good quality casting, and can meet producing of locomotive casting, that the investment pattern was made from the shell mold was made from silica sol.
采用硅溶胶粘结剂制造型壳，工艺简单，污染少，成本低，铸件质量好，满足机车类精铸件生产要求。
The research status on the mold filling of expendable pattern casting process is reviewed from the aspects of mold filling characteristics, heat and mass transfer.
从充型特性以及传热和传质两个方面回顾了消失模铸造充型过程的研究进展。
The additive of correcting metal penetration for green sand mold casting, made from the waste of oil further fabricated——namely DK material, is researched in this paper.
研制了利用植物油深加工后的废料———DK材料作为铸造用湿型砂防粘砂添加剂。
The additive of correcting metal penetration for green sand mold casting, made from the waste of oil further fabricated——namely DK material, is researched in this paper.
研制了利用植物油深加工后的废料———DK材料作为铸造用湿型砂防粘砂添加剂。
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