To facilitate the centuries-old weaving process, wire mesh suppliers must employ specialized weaving looms designed to work with metallic wires. These looms consist of seven components: a warp beam, warp wires, heddle frames, weft wires, a rapier band, a reed, and a front take-up mechanism.
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The warp beam is a cylindrical beam that is used to wind the warp wire after the volume and length of the wires are calculated based on the specifications of the mesh.
Warp wires are the wires that run vertically and are threaded through the entire loom.
The heddle frames are holsters that are used to organize and separate the warp wires. Looms set up to produce a square mesh may have two sets of heddle frames, whereas more complex filter cloth weaves may have more.
Weft wires are the wires the run horizontally and are typically fed by a separate spool of wire.
The rapier band system is responsible for threading the weft wire through the sets of warp wires between heddle frame movements.
The reed is one of the most essential elements of a weaving loom as it is used to position the warp wires they will be woven in and drive the weft wires into their exact potion.
The front take-up mechanism rolls the woven mesh once it is fully woven.
To initiate the weaving process, a loom operator will attach and arrange the individual wires on the warp according to their position in the weave. To prevent entanglement, these wires are housed in a wire housing unit known as a creel.
Once attached, the warp beam is wound, allowing the proper length of wire to be wrapped around the beam.
Each wire wound on the warp beam is threaded through its own heddle in a specific heddle frame then carefully threaded through the reed openings based on their order in the weave. At this point, the warp beam, heddle frame assembly are transferred to the weaving hall, and the remainder of the loom is assembled.
NOTE: A great deal of attention to detail must be applied when threading the wire through the heddle frames and reed, as this process control how accurate the mesh specifications are.
Once the loom is fully assembled and the wires are properly threaded, the weaving process can begin.
When first initializing the weaving loom, the warp beam unwinds slightly to feed a small increment of wires. At the same time, the front take-up mechanism winds the same increment of wires to maintain the required tension to produce high-quality mesh.
Once these movements are made in conjunction, the heddle frames shift to separate the wires. In a two-heddle frame system, the first heddle frame lifts one half of the wires, and the second heddle frame drives the other half of wires down.
While the two sets of wires are separated, a weft wire, typically fed from a wire spool that is separated from the creel and placed next to the loom, is shot between the wires by the rapier band. The rapier band then moves back to its resting position.
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It's at this point that the reed propels the weft wire to its final position, creating the precise cross-sections that wire mesh is known for. Once the weft wire is positioned, the reed returns to its resting position.
This marks the completion of the first interval.
To continue the weaving process, the warp beam and front take-up mechanism make the same slight, rotating movement to begin another interval. At the same time, the heddle frames will switch potion, wedging the previous weft wire as the two sets of wires are separated in the opposite direction.
These joint movements repeatedly continue until the desired length and mesh specification is woven.
When designing and incorporating mesh filters, there are three elements to the mesh that your mesh supplier needs to know to ensure your filter works as intended. Wire diameter, opening size, and mesh count all play a role in the effectiveness of a mesh filer.
When designing a mesh filter, a &#;good, better, best system is used. The &#;good&#; category illustrates when one of the three elements listed is provided. &#;Better&#; illustrates your ability to provide two elements, and &#;best&#; illustrates your ability to provide all three.
So, let&#;s say you send the mesh supplier a quote request for 200 feet of filter cloth with a mesh count of 50 microns. While the mesh supplier can provide an adequate recommendation, the inquirer&#;s exact needs remain unknown.
NOTE: Designing a woven wire filter may require you to convert mesh count to micron rating and vice versa. Use the following chart as a tool to help you comminate the needs of your operation:
If you were to submit a request for a 60x60 mesh filter with a wire diameter of ., the mesh supplier would have enough information to identify the mesh count and wire diameter. In turn, the mesh supplier can also calculate the opening size.
To that end, if any two elements are provided, the third can be determined; however, for best results, you should have all three ready before reaching out to the mesh filter supplier.
Read "Wire Mesh Filters: What You Need To Know Before You Buy" for insight into the mesh filter buying process.
Sample Request
Woven wire mesh filter are a big investment. To ensure you are satisfied and confident with bulk orders, you have the opportunity to request samples of both cut pieces and fabricated components.
To do so, you must reach out and provide the following information:
Having said that, there are a few limitations to note. As quantity plays a significant role in the feasibility of a sample request, we will need to establish the resources and labor your request requires.
Typically, if a woven wire supplier doesn't have the capacity to produce the desired component or specification, your sample request will get turned down. Your request can also get turned down if the rest volume doesn't align with the amount of tooling and labor needed to produce the component.
When it comes to cost, the amount you can expect to pay depends of the form factor of the sample.
If you are simply looking for cut-to-size pieces to familiarize yourself with a particular specification, the price tag will be fairly inexpensive. Of course, the price will depend on the various parameters of the specification.
If you are looking to sample a custom component, however, the expected cost will spike significantly. This is due to the increased labor needed to set up the tooling and fabricate the component.
NOTE: The expected cost of a customized part will increase as the complexity of the part increases.
If after testing the requested sample you find the performance does not meet your expectations, you should set a meeting with the mesh supplier's engineering team. This will give you the opportunity to identify the reason where improvements can be made.
Maybe it's as simple as switching someihng like the weave pattern or alloy. Or maybe you discover that woven wire mesh isn't the answer.
Either way, it is critical that you sit down with the engineering team so you can coordinate your next steps.
Now, if you are satisfied with how the component turned out, you will want to establish how many finalized parts you will need. After you decide and determine whether you will need a purchase order or blanket order, the next step would be to request a quote.
Once you receive a quote, approve it, and submit a purchase or blanket order, production will start.
You can use one of the following avenues to request a quote:
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