Abrasive Jet Machining (AJM) - Non Traditional Machining - Production Process 2 | Summary and Q&A

TL;DR

Abrasive Jet Machining (AJM) and Water Jet Machining (WJM) are non-traditional machining processes that use high-velocity particles and water jets, respectively, to remove material from work surfaces.

Key Insights

• 🚱 AJM and WJM are non-traditional machining processes that use different mechanisms for material removal: AJM relies on abrasive particles, while WJM utilizes high-pressure water jets.
• 🫢 The mass flow rate of abrasive particles, the mixing ratio of abrasive grains, and the operating pressure of the gas or air are important process parameters in AJM.
• 👻 Adding abrasive particles to WJM allows for the machining of hard materials, expanding its capabilities beyond soft materials.
• 😂 Tungsten carbide is commonly used as the material for nozzles in both AJM and WJM due to its ability to withstand high pressures without significant wear and tear.
• 🧡 AJM is suitable for materials that exhibit brittleness, while WJM can be used for a wider range of materials, including smart materials like rubber.

Transcript

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Questions & Answers

Q: How does Abrasive Jet Machining (AJM) work?

In AJM, high-speed air or gas pushes abrasive particles onto the work surface, causing tiny orbital fractures and chip removal through the flowing air.

Q: What are the key process parameters in AJM?

The mass flow rate of abrasive particles, the mixing ratio of abrasive grains in the jet, and the operating pressure of the gas or air are important parameters that influence material removal in AJM.

Q: How does Water Jet Machining (WJM) differ from AJM?

WJM uses high-pressure water jets to induce plastic deformation and fracturing on work surfaces, while AJM utilizes abrasive particles to remove material. WJM can be enhanced by adding abrasive particles for machining hard materials.

Q: What are the advantages of adding abrasive particles in WJM?

By adding abrasive particles in WJM, it becomes possible to machine hard workpiece materials through the induction of plastic deformation and fracturing, overcoming the limitation of using WJM for soft materials only.

Summary & Key Takeaways

• In Abrasive Jet Machining (AJM), high-speed air or gas carrying abrasive particles is directed onto a work surface, causing material removal through tiny orbital fractures.

• The material removal rate in AJM is influenced by process parameters such as the mass flow rate of abrasive particles, the mixing ratio of abrasive grains, and the operating pressure of the gas or air.

• Water Jet Machining (WJM) uses high-pressure water jets to induce plastic deformation and fracturing on work surfaces, and it can be enhanced by adding abrasive particles for machining hard materials.