PLENDERUITES You are here: HomeFoundry of magnesiumPressure die castingHot and cold chamber technologies searched phrase Home Foundry of magnesium News and events Business contact Magnesium and its alloys Properties of magnesium alloys EMI Pressure die casting Hot and cold chamber technologies Advanced Technologies The use of magnesium Coverings Review of studies and articles on magnesium and the Polmag company. last entry: "An article about the POLMAG company in the pages of the Business Zone of Nowa Trybuna Opolska" JOB OFFERS (0) Fast contact ul. German 2 47-143 Olszowa Hot and cold chamber technologies HOT - CHAMBER TECHNOLOGY , it is most often used in casting machines for the production of elements made of zinc and magnesium alloys. In this technology, as the following diagram shows: the chamber in which the piston works is immersed in the liquid metal in the machine's foundry furnace. Therefore, this technology is referred to as a hot chamber. The liquid metal is fed by a piston through the so-called siphon and nozzle for the casting mold. The injection takes place in a closed system without contact with air. COLD CHAMBER TECHNOLOGY is most often used in casting machines for the production of aluminum alloy elements, and again - magnesium. In this technology, as the following diagram shows: the piston rod chamber is located outside the casting furnace as an independent device / part of the machine. Most often, this chamber is not heated, which is why this technology is referred to as a cold chamber. Liquid metal is delivered to the chamber most often by hand, with a spoon from a ladle containing liquid metal, or by means of automatic or semi-automatic pouring devices. During the priming of the chamber and during injection - metal is in contact with air. Each of the above-mentioned technologies has its advantages and disadvantages. process hot-chamber technology cold-chamber technology machine cycle 30 sec on average over a minute cast dimensions most often up to 700 cm 3 even 14,000 cm 3 machine tonnage typical up to 500 tons typical up to 3,500 tons injection pressure 150-300 bar 400-1000 bar casting temperature up to 650 ° C up to 700 ° C minimum wall thickness even 0.5 mm > 1.2 mm porosity of castings little noticeable surface defects negligible noticeable cleanliness of the casting surface without pollution contaminated with traces of grease flash thickness on the mold dividing line little significant dimensional stability Okay weak castings deformations negligible considerable weight of the gating system little significant Our partners Home Foundry of magnesium News and events Business contact All rights reserved © 2010 PolMag . Design and implementation: Grupa Łukasz Piec