How do you calculate injection molding tonnage?
How do you calculate injection molding tonnage?
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. If you are running in a 500-ton press, try starting at 450 tons.
What is tonnage of injection molding machine?
Simply put, tonnage is the amount of force needed to keep the tool closed during the injection process. This clamping force is measured in tons and is vital to know in order to select an appropriate injection molding machine. A small machine may only be 25 tons, and they range up to 4,000 tons and beyond.
How do you calculate injection molding weight?
Let’s assume we have a shot weight of 40.6 gms. Thus, we can calculate volume as mass/density, which will be (40.6/1.52)= 26.71 cube centimeters. To calculate the injection stroke or shot size, we can put all values in the formula of shot volume, i.e., Shot Volume = π x r2 x Shot Size.
How tonnage is calculated?
Gross tonnage is calculated from the formula GT = K1V, where V is the volume of a ship’s enclosed spaces in cubic metres and K1 is a constant calculated by K1 = 0.2 + 0.02 log10 V.
What is tonnage factor?
The tonnage factor provides the mechanism for the conversion from volume of ore to weight of ore. In the English system, the tonnage factor is normally expressed as cubic feet per ton of ore. In the metric system, the tonnage factor is the specific gravity of the ore.
What is shot capacity in injection molding?
The maximum weight of material that can be delivered to an injection mould by one stroke of the ram.
What is injection capacity?
Injection Capacity means the right to inject natural gas into the Storage Facility at a certain rate and shall include Firm Injection Capacity and Interruptible Injection Capacity.
How do you calculate the weight of mold?
To figure the weight, the next step is to divide the volume of the rubber needed to make the mold by the specific volume yield of the mold rubber: 37 in³ ÷ 27.7 in³/lb = 1.34 lbs. (606.31 cm³ ÷ 0.962 cm³/g = 630 g). 1.34 lbs. (630 g) is the total weight of rubber that you will need to make the mold (Part A + Part B).
Is tonnage the same as tons?
Non-maritime usage of the term tonnage The tonnage may be expressed as 1 tonne (1,000 kg; 2,205 lb), 1 short ton (907.2 kg; 2,000 lb) or 1 long ton (1,016 kg; 2,240 lb). Often this distinction is not of any importance, however sometimes it is critical to define the exact units in which the tonnage is expressed.
What is ore tonnage calculation?
4.95 = sp gr of ore. If the ore volume has been computed in cubic meters, the volume multiplied by the specific gravity is the tonnage in metric tons directly.
What is a grade tonnage curve?
A grade tonnage curve combines two or three equations together to produce one of the more important tools for analysing the data indicating the potential amount of material obtained when varying the cut-off grade applied. Leapfrog Geo can display multiple grade tonnage curves on one graph.