Vacuum Heat Treatment
Vacuum Heat Treatment - Related Videos
04:05
Endoscopic Vacuum Therapy for the Treatment of Anastomotic Leakage after Total Gastrectomy with Esophagojejunostomy
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Here, we present a protocol for endoscopic vacuum therapy (EVT) in the management of anastomotic leaks following total gastrectomy with esophagojejunostomy.
08:59
Dry Oxidation and Vacuum Annealing Treatments for Tuning the Wetting Properties of Carbon Nanotube Arrays
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Cited by 11 •
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This article describes a simple method to fabricate vertically aligned carbon nanotube arrays by CVD and to subsequently tune their wetting properties by exposing them to vacuum annealing or dry oxidation treatment.
11:19
Ploidy Manipulation of Zebrafish Embryos with Heat Shock 2 Treatment
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A modified protocol for ploidy manipulation uses a heat shock to induce a one-cycle stall in cytokinesis in the early embryo. This protocol is demonstrated in the zebrafish but may be applicable to other species.
02:44
Endovascular Treatment of Acute Ischemic Stroke Using the Stent Retriever-Assisted Vacuum-Locked Extraction Technique
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2025
Source: Schregel, K., et al. Optimized Management of Endovascular Treatment for Acute Ischemic Stroke. J. Vis. Exp. (2018).This video demonstrates the endovascular treatment of acute ischemic stroke using the stent retriever-assisted vacuum-locked extraction technique. A guiding sheath is introduced through the femoral artery to reach the clot. A catheter with a stent retriever secures and extracts the clot. Vascular imaging is done to confirm successful reperfusion.
06:20
Proper Operation of Vacuum Based Equipment
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2023
Source: Robert M. Rioux, Ajay Sathe & Zhifeng Chen, Pennsylvania State University, University Park, PA Vacuum is required for a number of laboratory procedures. This is most routinely achieved in the laboratory by the use of vacuum pumps. In addition to working at low pressures, vacuum pumps can also be used to enable rapid changing of the atmospheres in a reactor or flask by evacuation and backfilling.
FAQs
The reduced-pressure atmosphere limits the oxygen available while the metal is heated, which reduces oxidation, scaling, and surface contamination. This protection is especially important when the finished component requires a clean surface or precise dimensions. By limiting unwanted surface changes during the thermal cycle, the process supports more reliable performance in engineered metal and alloy parts.
Heating and cooling conditions influence how the material’s microstructure changes, so the same equipment can support different outcomes. Hardening, tempering, annealing, and stress relieving each use a different treatment purpose, while the material and selected thermal cycle affect the resulting hardness, strength, wear resistance, or dimensional stability. Cycle selection therefore links processing conditions to the required component performance.
Its key distinction is the reduced presence of oxygen during heating. That condition limits oxidation, scaling, and surface contamination, whereas exposure to more oxygen can produce unwanted surface effects. The advantage is not a single guaranteed property change; rather, the protected atmosphere helps preserve surface quality while the chosen heating and cooling cycle determines the component’s internal and mechanical results.
Depending on the metal or alloy and the thermal cycle, treatment can improve hardness, strength, wear resistance, dimensional stability, and surface quality. These outcomes are not automatically obtained together, because the selected operation, such as hardening, tempering, annealing, or stress relieving, serves a particular processing purpose. Engineers therefore match the cycle to the performance requirements of the component.
A basic process places the metal or alloy in a vacuum furnace, heats it under reduced pressure, and then applies controlled cooling. The specific cycle is selected according to the material and desired outcome, such as hardening, tempering, annealing, or stress relieving. Maintaining control through both heating and cooling helps produce the intended microstructural and performance changes.
Engineers choose this approach when a component needs reliable properties together with clean surfaces and tight dimensional control. It is particularly relevant to precision components, tool steels, aerospace parts, and other engineered applications where oxidation, scaling, or contamination could compromise performance. The method also supports property improvement when hardness, strength, wear resistance, or dimensional stability is important.