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Main Causes of Porosity in Stainless Steel Castings
In the process of stainless steel casting, the problem of porosity often occurs, which brings a lot of trouble to the casting processing. The porosity is the bubble defect formed by the gas precipitated in the ingot during the cooling and solidification process of the metal liquid. Here's an analysis of the main causes of pores: 01 The permeability of the coating is poor or the negative pressure is insufficient, the permeability of the filling sand is poor, the gas and residue in the cavity cannot be discharged in time, and the pores are formed under the filling pressure. 02 The pouring speed is too slow to fill the pouring cup, exposing the sprue, involving air, inhaling slag, forming entrained pores and slag holes.
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2017
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During the medium frequency electric furnace drying, what problems should be paid attention!
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How to use the medium frequency furnace more energy-saving
Casting electricity has always been more concerned about the foundry, how to use it to make your medium frequency furnace more energy-saving: 1. Fast furnace is more energy-saving than slow furnace. The fast furnace of the same set of equipment saves electricity than the slow furnace. The feeding timing, compactness and hearth size will affect the melting speed. These points need to achieve the best power consumption at the same time to minimize. 2. The feeding should take into account the ammeter and make the power stable as much as possible. As much as possible to make the device output maximum power.
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