How much power does an extruder use?

Published by Anaya Cole on

How much power does an extruder use?

If the extruder motor specific energy consumption (SEC) is above 0.3288 kW h/kg, usually it indicates that there is an excessive power consumption in the extruder.

How do you calculate extruder capacity?

The output of an extruder in lb/hr can be estimated by the drag flow: 2.64 x D²Nhρ. Diameter (D) and channel depth (h) are in inches, screw speed (N) is in rpm, and melt density (ρ) is in gm/cc.

What is extruder capacity?

A standard 5- to 6-ton per hour extruder can produce 1 to 2 tons per hour of either floating or sinking small-diameter feeds or products less than 3 mm in diameter. The relationship is similar for larger-capacity extruders.

How much electricity does an injection Moulding machine use?

For thin-walled parts with short cycles, specific energy consumption of 0.3 kWh/kg is very efficient; for a thicker part moulded more slowly, 0.6 kWh/kg could be efficient.

How much energy does an injection molding machine use?

Injection Molding facilitates tend to consume 0.9 – 1.6 kWh/kg to process plastics, depending on their processing efficiency. Many factors impact the % of power consumed by barrel heating during processing, the most important of which is the ratio of heat added by Shear versus Barrel Heaters.

What is Torque in extruder?

Torque is the amount of energy required to run the extruder screw, which provides insight into the extruder operation. Extruder barrel temperature facilitates the softening/plasticizing of the feed and flow. Screw speed is responsible for rate of shear development, mean residence time, and degree of fill in the barrel.

How do you calculate RPM extruder?

Calculate the system’s Newtonian volumetric drag flow. Multiply together the following variables: channel width, channel depth, screw speed, screw diameter and the cosine of the helix angle. Multiply that result by the mathematical constant pi (approximately 3.14) and divide that result by two.

How do you calculate extrusion speed?

If we know the maximum flow rate of the hot end, we can use this formula: Recommended maximum speed = maximum flow rate / (layer height * extrusion width) to calculate the maximum printing speed.

What is twin screw extruder?

A twin screw extruder is a machine consisting of two intermeshing, co-rotating screws mounted on splined shafts in a closed barrel. The screws are tight and self-wiping, which eliminates stagnant zones over the entire length of the process section. This results in high efficiency and perfect self-cleaning.

What is tonnage in injection moulding?

The “tonnage” is the measure of force that is required to keep the tool closed during the injection process. This force is the main factor in determining the injection molding machine size required for producing the part.

How do you calculate tonnage in injection molding?

T = A x cf. For example, the projected area of the molded part is 150 sq/in times a clamp factor of 3 (tonnage needed/square inch from material data sheet). 150 x 3 = 450 tons needed.

What is extrusion rate?

The extrusion ratio is defined as the starting cross-sectional area divided by the cross-sectional area of the final extrusion. One of the main advantages of the extrusion process is that this ratio can be very large while still producing quality parts.

How do you calculate extruder throughput?

Subtract your system’s volumetric pressure flow from its volumetric drag flow. The result is the extrusion throughput for your system, measured in inches cubed per second.

How do you calculate blowing ratio?

Blowing ratio (or) Injection ratio, M, is the ratio of the coolant mass flux to the mainstream mass flux. Mathematically, M=(Density *Velocity) for coolant/(Density*Velocity) for mainstream.

What are the parameters of the extruder control system?

If the extruder control system includes HMI, this may be trended and viewed with other parameters to determine performance and stability. Motor load provides an indication of the working load of the motor compared to the motor’s capacity. It is typically a display only.

What is extruder overload?

Extruder overload is a descriptive term for a state or condition where the main motor driving the extruder is surpassing full load. Although potential factors that result in an extruder high motor load are listed below, it is possible that the main cause is simply that an under-powered drive motor was supplied for the application.

How much weight can a 150 hp extruder produce?

Nowadays, a 3.5-in. extruder with a 150-hp motor can obtain 650 to 700 lb/hr at 125 rpm and produce a melt temperature between 410 F and 420 F, against average head pressure of 4000 psi with a fractional-melt HDPE. A 2.5-in. machine should get throughput rates in the range of 250 to 275 lb/hr.

What is extruder in 3D printer?

Extruder is used in FDM or FFF technology 3D printer, which is known to everybody involved in 3D printing. Extruder stepper motor is responsible for feeding filament and controlling the movement of filament to melt in hot end and then coming out the hot end’s nozzle a thin thread of melted plastic.