Webb11 mars 2024 · Selective laser sintering, as the name implies, uses a liquid-phase sintering mechanism. The powder material is partially melted during the forming process, and the powder particles retain their solid-phase core and undergo subsequent solid-phase particle rearrangement and liquid-phase solidification. Bonding realizes powder densification. WebbInvestment casting. Inlet-outlet cover of a valve for a nuclear power station produced using investment casting. Investment casting is an industrial process based on lost-wax casting, one of the oldest known metal-forming techniques. [1] The term "lost-wax casting" can also refer to modern investment casting processes.
What is Investment Casting Definition JC casting
WebbSLS parts are constructed layer by layer from powdered materials using laser energy to melt CAD specified cross sections. ... In this paper the fabrication of complex metal parts rapidly using the investment, die and sand casting technologies in conjunction with the selective laser sintering process are being explained and discussed. Webb14 jan. 2016 · Investment casting is usually required for fabricating complex shapes where other manufacturing processes are too costly and time-consuming. Another advantage of rapid prototyping casting is the low cost of producing castings in small lot sizes CAD solid model (top), SLS polycarbonate pattern (left), A356 aluminum casting (right). 1. readthor157
Error transfer route in SLS rapid investment casting process
WebbThe SLS process with metal powders is used for direct tooling for die-casting. An example of tool inserts for die-casting produced with steel by direct metal laser sintering is shown below. Mold for aluminum casting, made of direct sintered steel The die proved that acceptable aluminum castings could be produced using this tool insert. Webb23 nov. 2024 · Although most investment castings are small, the investment process can produce castings weighing more than 1,000 pounds. This capability is limited to a relatively small number of investment casters and requires special expertise in handling. Most cast parts fall in the ounces to a 20-pound range. Webb9 sep. 2024 · Investment casting is also called precision casting. Its products are precise, complex and close to the final shape of the part. It can be used directly without processing or with little processing. It is an advanced technology with near net shape. Compared with the traditional sand casting process, the casting size is more accurate and the ... readthor1966online