What is ECDM process?
What is ECDM process?
Electro Chemical Discharge Machining (ECDM) is a novel hybrid machining process used for machining conducting and non-conducting engineering materials combining the features of EDM and ECM processes.
Which process combines principle of EDM and ECM processes?
ECDM is a combination of electric discharge machining (EDM) and electrochemical machining (ECM). Used for the machining of electrically non-conducting materials such as insulating ceramics, glass, polymers etc.
What is the value of applied voltage used in ECD process?
2. What is the value of applied voltage used in ECDB process? Explanation: Value of voltage used in ECDB process ranges from 12 to 24 V.
Which of the following electrolyte is used in electrochemical machining process?
The most common electrolyte used for ECM is a concentrated salt electrolyte, namely, sodium chloride or sodium nitrate. These are used as they are relatively inexpensive and they do not cause damage to the machinery.
Which of the following process can be used for deburring?
2. Which of the following processes can be used for deburring? Explanation: Different methods used for deburring include vibratory and barrel finishing, tumbling, water blasting, Abrasive flow machining, Electrochemical deburring and many more.
Which of the following insulating abrasive material is generally used for the grinding wheel in electrochemical grinding Mcq?
The wheels are metal disks with abrasive particles embedded. Copper, brass, and nickel are the most commonly used materials; aluminum oxide is typically used as an abrasive when grinding steel. A thin layer of diamond particles will be used when grinding carbides or steels harder than 65 Rc.
Why dielectric medium is used in EDM?
Dielectric is an important parameter in EDM and plays a crucial role in determining high material removal rate (MRR) and surface finish during operation. The dielectric fluid behave as a medium which controls the electrical discharge and absorb heat during process.
What is EDM machine used for?
EDM is a thermal process for removing unwanted material by applying cycled discharging sparks in the gap between an electrode and a conductive workpiece. This method is typically used for machining refractory metals and hard materials, which are difficult to machine with conventional machining techniques.
What are the values of current used in ECG?
What are the values of current used in ECG? Explanation: The values of current in Electro chemical grinding range from 50 to 300 A. 10.
Which voltage is used in ECM?
the formation of iron hydroxide and hydrogen gas. Faraday’s Law that states: The amount of and substance deposited or dissolved is proportional to the quantity of current passed. ECM uses a fixed DC voltage usually between 10 and 25 volts.
What is EDM tool?
EDM is a thermoelectric process used to remove metal via a series of discrete sparks between the metal and workpiece. In EDM an electric spark is used as the cutting tool to cut (erode) the workpiece and produce the finished part to the required shape. The workpiece is normally the anode and the tool is the cathode.
What are the main function of electrolyte in electrochemical grinding?
The electrolyte has three main functions in the ECM process. It carries the current between the tool and the workpiece, it removes the product of the reaction from the cutting region, and it removes the heat produced by the current flow in the operation.