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MIM Industry Vacuum Furnaces
About 60% of MIM production material is stainless steel. The most common alloys are 17-4PH and austenitic stainless steels 304L and 316L. The price of ready-made injection raw materials is 30-50 US dollars (about 184-307 RMB) per kilogram. After molding and debinding, the original parts loaded into the furnace can be worth thousands of dollars (about thousands or tens of thousands of yuan).
An important factor in the cost-effective operation of vacuum sintering furnaces is the economical process gas and power consumption. Depending on the gas type, these two cost elements of the sintering process can account for up to 50% of the total cost. In order to save gas consumption, an adjustable gas partial pressure mode must be implemented while keeping the debinding and sintering processes free of contamination. To reduce power consumption, create hot zones with optimized heating elements to reduce heat loss. To achieve these design points and keep R&D costs within a reasonable range, a modern, resource-saving vacuum sintering furnace uses powerful fluid dynamics calculation tools to find the optimal airflow and heat flow patterns.
Depending on the weight of the sintered part and the residual polymer content, the binder can accumulate on peripheral components (eg: exhaust pipes, pumps and hot zones) to varying degrees, which will result in long downtime for manual cleaning and routine maintenance. With a net material weight of 400kg (furnace volume >1,000L) and a binder content of 3-4%, up to 15kg of polymer will be removed in the degassing stage. Even so, most of the exhaust gas (>95%) should be collected at a specific condensation point (such as a binder trap or wax separator). Door-to-door cycle time will increase by over 2 hours due to decontamination and manual cleaning. As such, an inefficient, poorly designed vacuum sintering furnace will reduce operational performance by 15%. MIM manufacturers consider more powerful equipment with automatic cycle cleaning systems to reduce maintenance and keep unplanned breakdowns to a minimum.
The leading vacuum furnace manufacturer has introduced the concepts of lean and standardized production. For example, SIMUWU’s degreasing and sintering furnace can well provide customers with production needs. The equipment model is as following.
Learn more:
Vacuum Brazing Process Of Aluminum Alloy Millimeter Wave Components
Vacuum Nitriding Process
Advantages Of Vacuum Heat Treatment
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