You will need the length, width and depth of your project space to be able to get your estimated tonnage calculation. As an example, a 100-ton press will have a reverse load capacity of 10 tons. PUNCH & DIE OPTIONS. Hay stacked more than 30 but less than 60 days required 581 cubic feet per ton, and hay that was stacked more than 74 but less than 155 days required 515 cubic feet per ton. How to compute tonnage requirements: General - When pressure per square inch is known: psi x area of work/2000 = 2 tons of ram force required Example: Where it is known that 100 psi is needed to do a job on a 5" x 8" wide piece. For more details about the shearing strength including how to calculate it, you can refer to the answer from Wikipedia. These figures were obtained on timothy and mixtures of timothy and clover and were not intended to be applicable to alfalfa or prairie hays. How to Obtain Tonnage Required for Punching Round Holes. How to Calculate the Diagonal Dimension of a Punch. But if you only have the final amount know the percentage added, you need to work in reverse to find the original amount. 12. Double Body for Punching Leg Up. If these loads exceed the designed elastic limits of the press, the press frame will be damaged. For example, if you had the final cost and the percentage of sales tax and you want to know the cost before tax. A tier 1 automotive supplier was experiencing a serious issue with reverse tonnage. All dimensions used in Simplified tonnage calculations are in decimal feet to the nearest tenth of a foot. Tonnage calculations need to be precise in order for a sheet metal tooling project to be successful. Punching Force Calculator We use a factor of 400 pounds per linear inch of rule up to 500 pound per inch depending upon material being cut. Our calculator provides an average unit weight per product and should only be used for estimating purposes. How to Calculate the Largest Square Size Allowed for a Punch Style. When you calculate the tonnage, you can check out several 1-4 ton mini-split air conditioners here: Single Zone Mini Split ACs: 1 Ton or 12,000 BTU. Punch Force (KN) = 80 x 3 x 0.3447 = 82.728 KN Convert into tonnage: 82.728 KN ÷ 9.81 = 8.43 Ton. Their Komatsu 2000 ton press had reverse tonnage of 312 tons resulting in increased press wear and the looming possibility of down time. For example, if you need to calculate how much sales tax or tip to add to the bill. GROSS TONNAGE FORMULATION (MONOHULL VESSELS) The basic Simplified tonnage formula for gross register tons of a monohull vessel is: GRT = (Hull Volume + Deckhouse Volume)/100 Reverse tonnage is typically seen in blanking applications and cutting and perforating applications. Estimated square footage: 600 sq ft. Unsure of what to do, the supplier reached out to W-Technologies to see what we could do. Please use this calculator to select which product you would like to calculate the total tonnage estimated for your project. The press frame will see tension and compression loads with each stroke of the press. Formula: TONNAGE IN MILD STEEL = 3.1416 X DIAMETER OF HOLE X MATERIAL THICKNESS X 25 Example: 3.1416 X 2.000 X .250 X 25 = 39.26 TONS In best case scenarios, accurate tonnage calculations for sheet metal will help clients quote projects confidently and know the required forces to choose the correct press size. ton. Standard Shapes. 100 x 5" x 8"/2000 = 2 tons So if a die has 1000 inches of cutting rule and is rubbered in strips of ½” wide on each side of the knife, it will calculate to 1000 x 300 and 1000 x 50 or 350,000 lbs of pressure or 175 tons. REVERSE TONNAGE AIDA-Tech Volume Nine WHAT IS AN ACCEPTABLE LEVEL OF REVERSE TONNAGE?The conventional industry standard is to have presses designed to accept a reverse tonnage load that does not exceed 10% of the maximum forward capacity of the press. How to Calculate Required Tonnage for Punching Mild Steel with Tensile Strength of 65,000 PSI. AC Capacity (Tonnage) = (INSERT AREA IN SQ FT) * 0.0016 tons/sq ft. You can insert the area and calculate how many tons of AC you need per certain square footage.

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