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# How do you calculate mold tonnage in injection molding?

## How do you calculate mold 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. If you are running in a 500-ton press, try starting at 450 tons.

### What is capacity of injection molding machine?

Product Specification

Machine Type Injection Moulding
Raw Material HDPE, PE, PP, PVC
Clamping Force 0-100 ton, 100-300 ton
Capacity ( ton per day) 1 to 50, 50 to 100, 100 to 150, 150 to 200, 200 to 250
Clamping Way Hydraulic, Hydraulic & Mechanical Composite

What is the largest injection molding machine?

Capping that all off will be the LARGEST tonnage injection molding machine to operate at an NPE show – “The Cincinnati” by Milacron, coming in at a whopping 2250 tons of clamping power.

How do you measure injection mold size?

Most injection molders will recommend 2.5 times the surface square inches of the part and an additional 10% as a safety factor. If you have a part that is 120 square inches, you would need a press size with 300 tons of pressure.

## What does tonnage mean in injection molding?

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 is mold cost calculated?

Mould price=material cost + design + process and profit + VAT + tryout cost + packing and shipping cost. Usually in the ratio: Material cost: materials and standard parts accounted for 15%-30% of the total cost of the injection mould; Process and profit: 30%-50%;

What is barrel capacity?

When used to denote a volume, one barrel is exactly 42 US gallons and is easily converted to any other unit of volume. As the US gallon since 1893 is defined as 3.785411784 litre, a volume of one barrel is exactly 158.987294928 litres. Using the approximate value 159 litre is about 0.008% off.

What are the types of injection mold?

There are many different injection moulding process variations, including:

• Cube moulding.
• Die casting.
• Gas-assisted injection moulding.
• Liquid silicone rubber injection moulding.
• Metal injection moulding.
• Micro injection moulding.
• Reaction injection moulding.
• Thin-wall injection moulding.

## How do you calculate molding?

Divide the total number of inches by 12 to convert from inches to linear feet. For example, if your wall measured 40 inches in length, and you are installing molding on the top and bottom, 40 x 2 = 80 inches. Divide 80 by 12 to get 6.66 linear feet.

### How is tonnage calculated?

tonnage, in shipping, the total number of tons registered or carried or the total carrying capacity. 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.

How do you calculate injection molding cost?

Therefore, the price of a mold = material cost + manufacturing cost + overhead cost + profit + tax + technical value ; expedited production cost = mold cost + profit + tax + technical value and crash cost. Among them, mold cost = material cost + manufacturing cost + overhead cost.