Titanium Anode Baskets Purchase Guide

A titanium anode basket does two jobs at once: it holds soluble anode material in a plating tank and provides an electrical path to that material. A basket that fits the tank but has poor contact or inconvenient loading is still a poor replacement.

The drawings for a rectangular basket and a cylindrical basket can each show “titanium, 300 mm long.” They may still be impossible to compare. The real question is whether the specified anode material, current connection and surrounding tank geometry work together during loading, plating and maintenance.

1. Is an anode basket the right item?

This page concerns the titanium container and current-carrying support used to hold soluble anode chips, balls or similar feedstock in a plating process. The consumable metal dissolves during operation; the basket is intended to stay in place and conduct current. It is not the same product as a coated titanium anode, where an active coating participates in an insoluble-anode reaction. Nor is it a work basket used to carry the parts being plated.

That distinction changes the RFQ. For a soluble-anode basket, the supplier needs to know what material will be loaded, how often it will be replenished and whether fines or sludge must be retained by a bag. For an insoluble anode, coating chemistry, reaction, current density and lifetime evidence become central. A basket drawing cannot be converted into an MMO-anode specification by adding the word “coated.”

If an existing tank is being modified, note which function is changing. A switch in anode metal, loading pattern or rectifier duty can require a new contact and geometry review even when the old basket still fits physically.

2. What does the tank allow the basket to do?

Start with a plan view and side view of the tank. Show liquid level, busbar position, cathode location, circulation, moving equipment and the space available to lift a loaded basket out. Then show the intended basket location and number of units. This turns “custom size” into dimensions a fabricator and operator can use.

• Envelope: external width, depth and height; clearances to tank wall, floor, cathode and nearby baskets.
• Immersion: operating liquid range and which parts of the hook, joint or conductor may get wet.
• Loading: soluble metal type, piece size, typical fill height, maximum mass and how material is added.
• Handling: lifting path, lid or open-top design, drainage time and whether maintenance staff can remove the bag.
• Support: how the basket rests or hangs and the mechanical load carried by the hooks and frame.

Do not fill a basket drawing from empty-tank dimensions alone. A filled basket may deflect, block circulation or become awkward to lift. A current connection that is easy to install when empty may be hard to inspect after the tank is running. If the old basket failed, photograph the failure location and compare it with actual fill and maintenance practice before copying its dimensions.

Tank position also affects the plating result, but a basket supplier cannot promise uniform deposit thickness from basket geometry alone. Cathode shape, spacing, agitation, chemistry, rectifier output and process control all contribute. The buyer or plating-process owner should approve the electrode arrangement.

3. Which wall and opening design supports the process?

Expanded mesh, perforated sheet and a fabricated frame each behave differently. Openings must keep the soluble metal inside while allowing the intended bath access; they also affect cleaning and the ability to remove spent material. A percentage called “open area” has little value without the strand or hole dimensions and the loaded metal size.

The material standard should follow the actual starting form. ASTM B265 can apply to titanium sheet/strip feedstock and ASTM B863 to wire, when specified for those forms. Neither is a finished-basket performance standard. The delivered basket needs its own dimensional, weld, joint and contact checks.

Grade choice depends on the real bath: chemistry, concentration, temperature, contaminants, cleaning and off-normal exposure. Commercially pure titanium is common in basket discussion, but “titanium” is not blanket compatibility for every plating solution. Tell the supplier if fluoride-containing chemistry or other unusual constituents are present so a materials review can occur before fabrication.

4. Where does current enter—and what may become wet?

The hook and busbar interface carries the electrical duty. The RFQ should show hook quantity, section, contact length, busbar shape, installation direction and expected total current. A basket can have plenty of open area but still develop excess resistance at a small or dirty contact. Current also moves through the basket structure to the soluble anode fill; loose contact between particles can change the operating behavior as material is consumed.

Ask who will size the contact and who will verify the intended current. A supplier can fabricate to a reviewed connection design and inspect its geometry; the system owner defines rectifier duty and acceptable electrical performance. “No voltage loss” is not a credible specification, because every real current path has resistance.

For a composite hook with a copper current path and titanium covering, the drawing must show where copper is exposed and where liquid, vapor or splash can reach it. The interface and end seal require deliberate design. Do not assume a composite hook is included or suitable merely because it appears in a catalog. If the existing hook has overheated or corroded, provide the failure evidence; replacing only the basket wall may leave the cause untouched.

5. Is an anode bag part of the delivered assembly?

An anode bag can help retain particles and sludge, but fabric selection, porosity, fit and cleaning must suit the bath and the actual feedstock. A bag that clogs quickly can change flow and maintenance frequency; a loose bag can snag during loading. State whether HELE is quoting the bag, attachment method and any spare bags, or whether the buyer supplies them.

Maintenance is easier when removable parts are defined early: top access, lid, bag ties, bottom cleanout and replaceable hooks or screens. If the basket is so deep that operators cannot remove residual metal safely, a cheap initial unit can be expensive in service. Ask the operations team how they actually reload and clean the installed design. Their answer is often more useful than a generic request for “easy maintenance.”

Packaging should protect the basket wall and hook alignment. A dented mesh can trap anode pieces or change the clearance to the cathode. If bags are supplied, pack and identify them separately so wet metal parts or sharp edges do not damage the fabric before installation.

6. How should a finished basket and quotation be accepted?

Choose evidence that matches the failure modes: material heat identity, overall fit, opening geometry, weld/joint condition, hook dimensions and the supplied bag. An MTC for titanium feedstock does not prove assembled-basket dimensions or current contact. A visual image of a neat weld does not establish the required load or service performance. If the project needs a proof load or electrical test, define the setup and pass criterion in the order.

Compare the same delivered scope. One offer may include a fabricated basket with hook, frame, bottom and fitted bag; another may price a bare mesh shell. Ask for an itemized drawing revision, quantity, material form, fabrication, inspection, accessories and packaging. Lead time and minimum order depend on that specific configuration and should be confirmed in writing.

The HELE titanium baskets product page shows the relevant supply family. A useful basket quote should translate the tank and electrical inputs into one buildable assembly and list what still needs process-owner approval.

7. What should the RFQ contain?

• Plating process, soluble anode material/form, bath chemistry and operating temperature.
• Tank layout, liquid level, cathode location, available envelope and basket quantity.
• Rectifier current, busbar geometry, hook/contact arrangement and any exposure limits.
• Wall form and opening dimensions, frame, bottom, loading mass and maintenance access.
• Bag scope, material grade/standard, assembly drawing, inspection and packing requirements.

A marked-up tank photo plus a dimensioned sketch can be enough to begin a practical review. It does not replace final engineering approval, but it prevents the supplier from guessing at the installation and operating boundary.

Questions buyers often ask