In order to ensure the temperature Stability of ADI castings in the nitrate salt solution for 60-90 minutes, Isothermal Quenching Furnace the following technologies are adopted:
1. Design and install the compressed air intake system and porous pipes to assist the microcirculation of nitrate salt.
2. The software design of the temperature control system adopts the microcomputer program process curve Automatic temperature control, through 2 Second one test of the tiny change of nitrate salt temperature, according to the set process and the tiny change of actual temperature, Automatic operates the workpiece's demand for process temperature, continuously controls and changes the OH value which is energy output, makes the demand and supply reach a balance, thus Precision controls the temperature fluctuation of the nitrate salt liquid, makes the control precision of the nitrate salt liquid reach ±1℃.
3. Designed and installed two nitrate salt High Temperature mixers, which can perform uniform temperature stirring such as long convection of nitrate salt liquid, double circuit diversion, left and right counterflow, so that ADI castings of different shapes can achieve uniform heat exchange for any geometric shapes such as concave surfaces, shaded surfaces, deep holes, blind holes, through holes, etc.
4. Due to the use of thousands of special soaking sheet technology in nitrate salt Isothermal Quenching Furnace , the complete consistency of temperature is maintained in the nitrate salt liquid, achieving the goal of making the temperature both uniform and Stable .
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