GMM Swaged Dish Designer — User Guide

For design engineers. Install once, then design a swaged top dished end from an enquiry in about six minutes.

1. Before you install

The app builds the model on your own PC's Autodesk Inventor and places the mating parts from your Vault workspace. It needs, on your PC:

• Autodesk Inventor 2025, installed and licensed (2025 specifically — the automation drives that version).
• The Vault working folder at D:\Vault with the inner-parts library synced from Vault: Designs\COMPONENTS\INNER PARTS\INNER DISHED END, …\STUB END and …\BODY FLANGE AND MANHOLE OR HANDHOLE STUMP. If your workspace is elsewhere, you can point the installer at it.
• Windows 10 or 11. PowerShell 7 is bundled: if your PC does not have it, the installer installs it and Windows asks for permission once (admin rights only for that step; ask IT to install PowerShell 7 if you have none).
• Network access to GMM's cloud service (https://inventor-ai.walm.tech) — used for enquiry parsing, the past-builds catalog, the expert and updates.
• The installation key from the design office (a 40-character code). The installer asks for it once.

2. Install

1. Open the download page on your PC and download GMM-SwagedDish-Setup.exe.
2. Run it. Windows SmartScreen may show "Windows protected your PC" because the installer is not code-signed yet — click More info → Run anyway.
3. In the setup window:
   • Install folder — keep C:\GMM\SwagedDish (or choose another; the app keeps its results there too).
   • Cloud API URL — keep as prefilled.
   • Installation key — paste the key you received.
   • Vault root — keep D:\Vault unless your workspace is elsewhere.
4. Click Install. The log in the window shows: extracting, config, PowerShell check, registration, health check. It ends with "Done".
5. The Walm icon appears in the notification area (bottom-right, next to the clock — click the ^ arrow if Windows hides it) and the designer window opens.

3. The notification-area icon (Walm logo)

Double-click it to open the designer. Right-click for the menu:

4. Design a dish — step by step

4.1 Start from an enquiry

• Upload OFN: drop the customer's technical-spec PDF (the OFN / FR-MKT-006 report) on the tile, or click it to choose the file. The app reads the reactor type, capacity, design conditions, MOC and the nozzle schedule from it.
• Or pick one of the recent enquiries listed below the tile to try the app on known data.
• Build Parameters tab: you can also type the parameters yourself instead of uploading.

4.2 Find the closest past build

Click Find closest build →. The app compares the enquiry with GMM's past reactors and shows the best match (type, capacity, MAWP, match percentage) with a parameter-by-parameter comparison, other candidates, and the plan of steps it will execute. "Open GA drawing" shows the matched reactor's GA.

4.3 Review the nozzle plan

Click ▶ Execute steps. The first step is the nozzle plan — the table is the contract for the build, and every cell is editable:

Checks run live as you type: flange clearance between neighbours, the manhole keep-out, and the hard error when a nozzle's split flange would collide with the centre nozzle's. The approve button is blocked until the hard errors are fixed. ↺ Reset to computed restores the plan derived from the enquiry.

4.3a Adding or removing nozzles

• ＋ Add nozzle (under the table) adds a row with the next free tag (N2, N3, … whichever number is unused), DN150. The field nozzles are re-spaced equally (unless you have hand-set angles) and, if the periphery is now full, some are moved inward automatically (see 4.3b). Then set its DN, angle, radius and service like any other row. Added rows are tinted green.
• ✕ at the end of a row removes that nozzle. The centre nozzle (M) and the manhole cannot be removed.
• ↔ Space equally re-applies the equal-pitch rule to all field nozzles in their current order — the usual step after adding or removing one.
• Radius after add/remove: adding or removing a nozzle re-runs the inward fit, so nozzles move back out to the periphery when room frees up.
• Tags must be unique and of the form M or N + number (they name every feature in the model); the check panel flags duplicates and blocks approval until fixed.

4.3b When the periphery is full — automatic inward fit (rule 1.3)

Nozzles start at the periphery (DN100/150 at 800 mm, DN200/250 at 750 mm). With many or large nozzles the split flanges would foul at equal pitch, so the app moves nozzles inward by itself: first only a nozzle you just added, otherwise every other nozzle onto one inner ring at the largest radius that clears everything (staggered rings). The plan you are shown never fouls unless you change a value by hand. Moved rows show ↙ 800→520 (rule 1.3) under the radius; hand-set radii (tinted) are never moved.

If your own edit makes two flanges foul, the check panel says which two and lists what would be acceptable — e.g. N4: acceptable radius 500–560 mm at 117°, or angle 95–110° at r=800. Type one of those values, or click ↙ Auto-fit radii to let the app move nozzles inward while keeping your angles.

4.3c The sections on the left

The design screen is organised as sections listed on the left panel: Nozzles (the table), then one section per component of the reactor — Reactor, Monoblock, Swaged top dished end, Jacket and its support and earthing, and the rest — and finally Build once a generation has started. Click a section to open it; each shows how many of its fields are set. The Approve & generate button sits in the bar at the bottom and works from any section.

The component sections hold the assembly configuration — the configurable parameters of the whole reactor (monoblock, jacket and its support and earthing, diaphragm ring, manhole balance and clamps, agitator, shaft closure, gearbox, motor, drive assembly, name plate bracket and the rest). Green fields were read from your enquiry or are fixed for the 6.3KL class; the rest are yours to fill. Each component has two identity boxes: a drawing number (how the part is found in Vault) and an item code (the ERP code that goes on the bill of materials). They are different things and both are kept.

The dish signature under "Swaged top dished end" is the key used to find an existing dished end for the same nozzle combination — it follows the table above as you edit it. Your entries are saved with the build and carry over to the next version of the same enquiry.

4.3d Stub ends and the reuse check

The nozzle table has a Stub end · item code column: the plate and length of the stub end each nozzle will get, its ERP item code, and the height it sits at. The manhole shows stump. A size with no stub-end rule shows none in amber — that nozzle will be skipped, so you see it before generating rather than in the warnings afterwards.

Each match has an Open in Inventor button. A dish this app built opens straight from your generated folder; one from Vault is fetched first, which takes a few seconds.

Above the table, the reuse check says whether a dished end with this nozzle configuration already exists in Vault. Green means this customer already has one and no new dish is needed; it names the drawing and item code. Amber means another customer has one. Grey means nothing matches. It never blocks you — generate anyway if this build must differ. The check compares reactor type, dish ID, plate and the set of field nozzles; angles and radii are not part of it.

4.4 Generate

Click ✓ Approve nozzle plan & generate swaged disc. The build takes about 5–7 minutes and runs on your Inventor:

1. Dome derived from the standard dished end, nozzle sketch, necks, agitator and manhole (about 1½ min).
2. Swage fillets on every nozzle.
3. Trims: manhole neck cut square 55 mm above the crown, field nozzles trimmed with the tangent arc, centre neck cut 35 mm above the dish surface.
4. House appearance, wrap in an assembly.
5. Stub ends at their RL heights (mitred to the trims), the manhole stump, the 16T centre stub end; colours; STEP export.

The progress panel shows the stage, the swage and trim counters and the last log lines. The build runs in hidden Inventor sessions, so you can keep working in your own Inventor meanwhile; when it finishes, open the result from the result card. (A live view that shows the model growing in your Inventor exists but is switched off by default — the design office can enable it per installation.)

5. Results and files

When the panel shows done, the result card offers:

• ⬇ Download STEP — a portable STEP of the whole assembly (dish, trimmed necks, stub ends, stump, colours). Opens in any CAD; this is the file to send outside GMM.
• .iam / .ipt — the native Inventor assembly and part. They reference Vault parts, so they open properly only on a PC with the Vault workspace.
• ⚙ Open in Inventor — opens the assembly (or the part only) in your Inventor.

Files live in <install folder>\generated as SWAGED_DISC_<enquiry>_<customer>_vN.iam, …_vN_swaged.ipt, …_vN.stp, plus …_vN_pre_swage.ipt (the part before swaging) and a jobs\ folder with each build's log.

6. Tweak and generate again — versions

After a build the nozzle table is editable again. Change any cell and click ↻ Tweak & generate v2: the app builds a new version and keeps the earlier ones (v1, v2, … all stay in generated). The result card lists every version of the enquiry with its STEP download. Versions are per PC.

7. Ask the expert

The 💬 Ask the expert button (bottom-right) opens a chat that knows what is on screen — the parsed enquiry, the matched build and its differences, the plan, the nozzle table. Ask why a build was matched, what a step does, or general questions about swaged dished ends and the rules. Answers come from GMM's cloud service; nothing is sent anywhere else.

8. Updates

The app checks for a new version shortly after it starts and offers to install it; you can also use tray ▸ Check for updates…. An update downloads about 30 MB, replaces the app files and restarts the local service. Your settings and your generated dishes are never touched. Builds in progress are not interrupted.

9. If something goes wrong

Logs for support: <install folder>\generated\jobs\<job>\log.txt (the build), app\tray.log, app\server.log.

10. What the app builds (the engineering rules in brief)

• Dome derived from the standard 1950 ID dished end; nozzle bore = DN + 3; neck wall = dish thickness.
• Manhole at 0° with a 25° tilt, ±45° keep-out; other nozzles equally spaced over the remaining 270°, radial station by DN.
• Swages: constant rim-value fillets (DN100/150 → 40, DN250 → 45, manhole → 50, centre → 60), outer then inner.
• Field-nozzle trim: R2000 arc from wall to wall 20 mm above the swage junction, cut tangent at the nozzle axis.
• Manhole: neck cut square at crown-pierce + 55 mm; the 95 mm stump sits on it with its top at +150.
• Centre nozzle: cut at dish surface + 35 mm; 16T DN200 stub end, top at dish surface + 110 (RL + 475).
• Stub ends: DN100/150 at RL + 365, DN250 at RL + 390, mitred to the trim; all mating parts in the dish's Semi-Polished shade.

The full numbered rules are in the app folder: docs\ENGINEER_RULES.txt.