In the die casting production, stable mould temperature is favorable for the production rhythm and casting quality and mould life. And compared with aluminum alloy, magnesium alloy heat capacity is small, so most aluminum alloy die casting mold often need to use water cooling, the magnesium alloy die casting mould needs to be heated to meet the normal production, especially the production of certain thin-walled parts. Some die casting factory to heating mould with flame gun, this method is not suitable for magnesium alloy die casting. Because it is hard to guarantee the mold temperature uniformity, the mold because the hot and cold uneven and produce cracks. And because the latent heat of magnesium alloy is low, when production the thin-walled parts in order to maintain stable production and good filling conditions, you need to continuously heat the mold to maintain the mold temperature stable. For magnesium alloy die casting, the most ideal heating way is uses the mold temperature control machine to heat up the mold.
The mold temperature control machine uses the High thermal conductivity medium, can pass the heat to the mold in a short time. Mold temperature machine commonly used has two kinds, one is the hot water mold temperature control machine, the other is a hot oil mold temperature control machine. In the case of sealing heating, due to the boiling point of water, the maximum temperature of the mould temperature can only reach 140 ~160. High temperature liquid magnesium and water will react violently, if the high pressure cooling water leak may cause explosion risk. When the magnesium alloy die casting, the mold temperature usually must remain at 180 °C ~280 °C. Therefore, the hot water mold temperature control machine is seldom used in the magnesium alloy die casting. Hot oil mold temperature control machine is often used to magnesium alloy die casting production, the heat conduction oil boiling point is higher, use temperature is higher than that of water, to the mold heat is more uniform and constant. The use of hot oil mold temperature control machine temperatures may reach above 300 °C.
The above article from KENOS official website (http://www.kenos-diecasting.com/) kenosblog1508
The original address: http://www.kenos-diecasting.com/news_show_104.html, reproduced please specify.
The mold temperature control machine uses the High thermal conductivity medium, can pass the heat to the mold in a short time. Mold temperature machine commonly used has two kinds, one is the hot water mold temperature control machine, the other is a hot oil mold temperature control machine. In the case of sealing heating, due to the boiling point of water, the maximum temperature of the mould temperature can only reach 140 ~160. High temperature liquid magnesium and water will react violently, if the high pressure cooling water leak may cause explosion risk. When the magnesium alloy die casting, the mold temperature usually must remain at 180 °C ~280 °C. Therefore, the hot water mold temperature control machine is seldom used in the magnesium alloy die casting. Hot oil mold temperature control machine is often used to magnesium alloy die casting production, the heat conduction oil boiling point is higher, use temperature is higher than that of water, to the mold heat is more uniform and constant. The use of hot oil mold temperature control machine temperatures may reach above 300 °C.
The above article from KENOS official website (http://www.kenos-diecasting.com/) kenosblog1508
The original address: http://www.kenos-diecasting.com/news_show_104.html, reproduced please specify.
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