The use of thermostatic magnetic stirring bath

The main components of the collector-type constant temperature magnetic stirring bath are excellent in material selection. The DC high-power motor is used for the motor, and the stirring torque is large and the noise is small. Special stainless steel heating tubes are aged at 8000C for 24 hours. Insulation resistance >1000MΩ, safe and reliable when dry. Magnetic steel uses the most magnetic "NdFeB" permanent magnet as the rotor to ensure adequate suction and torque. Thermostatic thermostatically heated magnetic stirrer, DF-101 series thermostatically heated magnetic stirrer is a new type of magnetic stirrer developed by this factory. The product has been widely used in the laboratories of universities across the country. Users praise.
With the collector heating method, the heated vessel is completely exposed to intense heat radiation, and the heating rate is three times that of other planar heated magnetic stirrers. The temperature is even and the efficiency is high, and it is more suitable for the heating reaction of the spherical flask.
Heating thermostatic magnetic stirring bath Features:
1 It can be used as a water bath or an oil bath. The tank has a strong magnetic stirrer built-in.
2 Uses both oil and water ANSI 304 stainless steel heaters. The strong magnetic stirring causes the stirrer in the tank to rotate synchronously, ensuring that the high viscosity solution is even and accurate in temperature.
3 High performance DC brushless motor, stable performance, continuous use. High-temperature magnets do not lose magnetism when used continuously at 300°C.
4 PID control, digital display. Dual sensors, tank temperature and reaction vessel temperature can be converted to display.

"Gravity Die Casting. A permanent mould casting process, where the molten metal is poured from a vessle of ladle into the mould, and cavity fills with no force other than gravity, in a similar manner to the production of sand castings, although filling cn be controlled by tilting the die."

Gravity Die Casting

Sometimes referred to as Permanent Mould, GDC is a repeatable casting process used for non-ferrous alloy parts, typically aluminium, Zinc and Copper Base alloys.

The process differs from HPDC in that Gravity- rather than high pressure- is used to fill the mould with the liquid alloy.

GDC is suited to medium to high volumes products and typically parts are of a heavier sections than HPDC, but thinner sections than sand casting.

There are three key stages in the process.

  1. The heated mould [Die or Tool] is coated with a die release agent. The release agent spray also has a secondary function in that it aids cooling of the mould face after the previous part has been removed from the die.
  2. Molten metal is poured into channels in the tool to allow the material to fill all the extremities of the mould cavity. The metal is either hand poured using steel ladles or dosed using mechanical methods. Typically, there is a mould [down sprue" that allows the alloy to enter the mould cavity from the lower part of the die, reducing the formation of turbulence and subsequent porosity and inclusions in the finished part.
  3. Once the part has cooled sufficiently, the die is opened, either manually or utilising mechanical methods.

Advantages

  • Good dimensional accuracy
  • Smoother cast surface finish than sand casting
  • Improved mechanical properties compared to sand casting
  • Thinner walls can be cast compared to sand casting
  • Reverse draft internal pockets and forms can be cast in using preformed sand core inserts
  • Steel pins and inserts can be cast in to the part
  • Faster production times compared to other processes.
  • Once the tolling is proven, the product quality is very repeatable.
  • Outsourced Tooling setup costs can be lower than sand casting.

Gravity Casting Parts

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