Weld schedule for an item
Enter the welds of the item row by row — type, size, length and quantity — and the schedule gives each one its ISO 2553 size designation, its section and its deposited metal, then totals the length, the filler, the arc time and the gas. The table downloads and goes with the drawing.
Short answer
The deposition calculator works out one weld, but material is ordered for the whole item. The schedule collects every weld position at once: for each it gives the ISO 2553 size designation, the section and the deposited metal, and at the end it totals the length, the filler, the arc time and the gas. These are numbers for an order and a quotation, not for setting work norms.
| No. | Weld type | Size, mm | Weld length, mm | Quantity |
|---|---|---|---|---|
| 1 | ||||
| 2 | ||||
| 3 | ||||
| 4 | ||||
| 5 |
Size — leg z for a fillet weld, plate thickness t for a butt weld.
Where the numbers come from
The schedule has no arithmetic of its own. The weld section is worked out by the same function as the deposition calculator and the cost calculator; the preparation of a butt weld comes from the same routine as the groove calculator and the pWPS generator; the deposition, speed and gas coefficients come from the same set the welding cost estimate runs on. The schedule adds exactly one thing — it brings several different welds of an item into one numbered table.
That is where the value sits: the figures here cannot drift away from the ones the separate calculators give on neighbouring pages.
It does not set work norms: arc time is the time the arc burns, not the time spent at the item. It does not handle partial penetration: the design throat of such a weld is set by the design, and deriving it from the thickness would be deciding on the designer’s behalf. It does not replace the drawing: positions are numbered in the order you enter them, and tying a number to a joint is your job — which is why the sheet carries a “Drawing” row.
How to use it
Five rows is enough: an item drawing usually carries three or four distinct weld positions, and repeats are entered as a quantity. If there are more, split the item into assemblies — that is how they are inspected anyway.
Order material from the “filler consumed” line rather than from the deposited metal: the difference between the two is exactly the loss to stub ends, spatter and burn-off, and the process coefficient has already accounted for it.
Frequently asked questions
Why does the designation carry two numbers, a and z?
Because they are different sizes of the same weld. a is the design throat, set by the designer, and it is what stands in the ISO 2553 designation. z is the leg, measured with a gauge in the shop. The relation is simple: a = z / √2, roughly 0.7 of the leg. The schedule prints both so that one is not taken for the other.
Why is the filler consumed more than the deposited metal?
Because some of the filler never reaches the weld: stub ends, spatter, burn-off. The process coefficient sets the difference — about 0.65 for manual metal arc, about 0.93 for MAG. Ordering material by the deposited metal means ordering about a third too little.
Can arc time be used to set a work norm?
No. It is pure arc-burning time. The real time includes fit-up, tacking, cleaning, turning the item and moving between joints; the operating factor on such work is usually 0.2–0.4. The schedule supports an order, not a job ticket.
Why is there no partial penetration?
Because its depth is a design decision, not a consequence of plate thickness. Full penetration follows from the geometry unambiguously; a partial one is stated in the documentation. Putting a plausible-looking figure here would mean deciding for the designer and writing an error into the order.
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