Austenitic metal low temperature supersaturated gas carburizing surface strengthening test device

Abstract

The invention relates to a test device, and especially relates to an austenite metal low-temperature supersaturated gas carburizing surface strengthening test device. A method comprises austenite metal surface activation pretreatment before carburizing and low-temperature gas carburizing treatment. The device is composed of a supporting platform, a temperature determination and control system, a sealing system, a multi-atmosphere mixing system, and a vacuum system. The invention aims at an austenite metal multi-atmosphere low-temperature supersaturated gas carburizing surface strengthening technology, and provides the test device with the advantages of uniform temperature field, high precision, simple operation, low cost, and capability of realizing continuous and uniform carburization.

Description

technical field [0001] The invention relates to a test device, in particular to a surface strengthening test device for low-temperature supersaturated gas carburization of austenitic metals, which can improve the surface strength, hardness and resistance of austenitic metals without reducing the corrosion resistance of austenitic metals. properties such as wear and tear. Background technique [0002] Austenitic metals are widely used in machinery, chemical, pharmaceutical and other industries due to their excellent mechanical properties, machinability and corrosion resistance. However, austenitic metals also have obvious disadvantages: extremely low carbon content, resulting in low surface strength and hardness, poor wear resistance and fatigue resistance, which restricts the application of austenitic metals in some heavy loads and Applications in equipment and components that require high wear resistance. [0003] So far, there are many technologies used to improve the su...

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Problems solved by technology

However, austenitic metals also have obvious disadvantages: extremely low carbon content, resulting in low surface strength and hardness, poor wear resistance and fatigue resistance, which restricts the application of austenitic metals in some heavy loads and Applications in equipment and components requiring high wear resistance

However, the low-temperature ion surface strengthening technology can only process parts with simple surface shapes, and cannot handle workpieces with complex shapes. Moreover, low-temperature ion surface strengthening treatment uses ion sputtering to heat the surface of austenitic metals, and the temperature at each point on the surface is not uniform. After treatment, the hardened layer will be uneven, and harmful phases and compounds may be formed locally, which will affect the performance of stainless steel. Therefore, the research on the surface strengthening technology of austenitic metals with low-temperature supersaturated gas has more practical significance, and a set of safe, reliable, high-precision The test device is the premise and key of related technology research

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