Welded wire mesh manufacturing process, include galvanize welded wire mesh and vinyl coated welded wire mesh production processing.
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Wire rod
The raw material used for product material is of low carbon steel from various steel manufacturers, commonly known as wire rods. The raw material grades are SAE , SAE , and SAE which has a percentage of carbon in the range of 0.08 to 0.12. Stainless steel wire, iron wire, galvanized wire is the ideal raw materials.
Cold rolling
Cold rolling is a metal working process in which metal is deformed by passing it through rollers at a temperature below Recrystallisation temperature. Cold rolling increases the yield strength and hardness of a metal by introducing defects into the metals crystal structure. These defects prevent further slip and can reduce the grain size of the metal.
Straightening & cutting
Specialized machinery from Italy is used for straightening and cutting process. The cold rolled wire rods in the coil form is passed through pre set die and cartridge units (special sets for different diameter wire rods) present in the straightening and cutting machine, where the wire rods are first straightened and then cut to set length (precision up to 2 mm) automatically. The wire rods can be cut to any size ranging from 0.8 metre to 12 metre with a max tolerance of 2 mm.
Welding
Welded wire steel fabric is manufactured with automatic welding machines, where wires are welded together in square or rectangular grids. The wires are welded by electric resistance in an automated state of the art machine which controls welding parameters precisely. All the settings for dimensions and welding are programmable. The weld is formed by a controlled combination of pressure, intensity and duration of electric current to develop fusion of the wires. Welded steel fabric utilizes welded intersections for bond and anchorage.
Bending & cutting
Two separate machines from Schnell, Italy are available for cutting and bending operation. The cutting machine is used for cutting the finished meshes to desired dimension. It is a motorised unit, capable of cutting meshes at a speed of 2 to 3 cut per second. The bending machine available is used to bend the cut meshes to the required shape (as required by design). The machine is capable of bending sheet to any angle (Up to 180o). Depending upon the design requirements, the sheets requiring cutting and bending will be taken for this operation else the meshes will be directly taken for despatch from the third process.
Finished mesh
After the bending and cutting process comes the final stage in manufacturing process, galvanizing or PVC coating.
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This article will give detailed information about welded wire mesh.
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Welded wire mesh consists of a series of wires welded together at the points where they intersect. The size of the mesh openings can vary based on the type of wire used and the intended function of the mesh. Regardless of the size or type of wire, welded wire mesh is extremely durable and cannot be deconstructed without the application of significant force.
The manufacturing process of welded wire mesh involves threading spools of wire through a welding machine. This machine is programmed to weld the numerous intersections of the wires uniformly, efficiently, and quickly, allowing for simultaneous welding at multiple points.
Welded wire mesh, also known as "weldmesh," is available in rolls or sheets. Thinner wires can be used to create larger open areas while still maintaining the mesh's strength and stability. Welded wire mesh is typically made from mild steel, galvanized steel, or stainless steel.
In construction, mild steel is often used for retaining walls or reinforcing structures. Galvanized mild steel is commonly used for fences, security screens, partitions, general storage solutions, machine guards, cages, and aviaries. The galvanized mesh can be made using pre-galvanized wire or hot-dipped wire, with hot-dipping preferred for its ability to conceal welds and provide a more polished appearance.
Stainless steel welded mesh is preferred in food or pharmaceutical production, where high hygiene standards are essential, or where the product needs to resist environmental conditions without rusting quickly.
Unlike woven mesh, where the opening is the clear space between wires, the opening for welded mesh is typically measured from the center of one wire to the center of the next. Therefore, when purchasing welded wire mesh, it's important to provide detailed information, including the material, center-to-center measurement (or clear opening), wire diameter, the required width and length, and the number of sheets or rolls needed.
Welded wire mesh is widely used due to its durability, strength, and versatility, maintaining its shape and form across various applications. Common uses include fencing, cages, shelving, and grates. Each application requires a specific type of welded wire mesh designed to meet the particular conditions.
Welded wire mesh is also known as welded wire fabric. It is constructed and configured similarly, consisting of a prefabricated grid where longitudinal wires are precisely spaced and welded to cross wires. The intersections of these wires are automatically welded using electric resistance welding.
Square welded wire mesh features intersecting wires that meet at right angles and are evenly spaced. This type of mesh is highly versatile and is commonly made from carbon steel or stainless steel.
Rectangular welded wire mesh is similar to square welded wire mesh, but with wires that intersect at right angles and are spaced further apart in one direction. This rectangular design enhances the mesh's strength.
PVC welded wire mesh is coated with a thin layer of PVC powder to provide corrosion resistance, adding color and protecting the underlying metal. In addition to its resistance to corrosion, PVC welded wire mesh is also resistant to aging, sunlight, and weather. It is used across various industries, including farming, construction, transportation, and mining, to protect structures and workers, house livestock and poultry, and serve as a decorative element.
Galvanized welded wire mesh is coated with a protective layer of zinc to prevent rust and corrosion. This coating can be applied using either an electro-galvanizing process or hot dipping. Hot dipping involves immersing the welded wire mesh in molten zinc, which adheres to the wire's surface and provides a robust shield against rust. Electro-galvanizing, on the other hand, uses electricity to bond zinc to the metal wires. Galvanizing can be done either before or after the wire mesh is welded.
Galvanized wire mesh has different aperture sizes and wire diameters, which is one of its advantages. It is applied to welded wire mesh for a range of applications.
Welded stainless steel wire mesh is created by joining stainless steel wires at their intersections, forming a strong and uniform barrier. Known for its durability and strength, this type of wire mesh offers a consistent appearance and is one of the most popular choices available. The resistance welding process, which fuses the wires without the use of filler metal, results in a robust and reliable product. Welded stainless steel wire mesh can be cut into smaller shapes such as disks, squares, or rectangles. Due to its resistance to reacting with fluids, it is often used in filters and is extensively applied across various industries, including transportation, agriculture, mining, horticulture, and leisure.
Welded wire fencing is available in rolls or panels and can be galvanized or non-galvanized, with non-galvanized options generally being more affordable. Installation is straightforward, particularly when replacing or adding to an existing deck. Custom rolls are made to order based on customer specifications, requiring minimal cutting and can be installed by one or two skilled individuals. Wire fence rolls are especially suited for large-scale projects that need extensive coverage and may involve work crews and expert installers.
To install welded wire fencing, you'll need posts, rings, pliers, and other essential tools. The panels are pre-fabricated in specific shapes and sizes, which allows for easy disassembly and reuse.
Welded wire fencing is made from thick gauge steel, which necessitates the use of torches for cutting, as conventional cutting methods are ineffective. Its robust steel construction, combined with posts set deep in the ground and secured with cement footings, makes welded wire fencing one of the most stable fencing options available. It is suitable for use in urban, suburban, rural, and industrial environments.
Heavy welded wire mesh is distinguished by its significantly larger wire diameter compared to other types of welded wire mesh. Made from the same materials as traditional welded wire mesh but with thicker, more robust wires, it offers enhanced strength and durability. This makes heavy welded wire mesh suitable for use in floor reinforcement, wall structures, and various construction applications.
The properties and characteristics of heavy welded wire mesh depend on the materials used in its production. Stainless steel and galvanized heavy wire mesh, for instance, are both resistant to corrosion and capable of withstanding extreme conditions.
The key difference between welded wire mesh and woven wire mesh is the welding process, which greatly enhances the strength of the mesh. This superior strength, durability, and endurance make welded wire mesh a popular choice for security applications and constructing enclosures.
For more information, please visit Welded Wire Mesh Supplier .
The robust construction of welded wire mesh offers numerous advantages compared to similar products.
Welded wire mesh is also commonly used in construction for reinforcing concrete structures. In these applications, welded reinforcing mesh is placed within poured concrete forms, such as beneath a slab or within a foundation frame, to enhance the strength and durability of the concrete.
Building Frames: A road-reinforcing mesh grid is a type of welded reinforcing mesh used to strengthen road surfaces or parking lots.
Mesh for masonry: It supports the roadway in coal mines as a supporting mesh.
The manufacturing process for welded wire mesh is consistent across various industries. It involves creating a prefabricated grid that is welded together using electric fusion welding. In this process, parallel longitudinal wires are precisely spaced and welded at their intersections with cross wires at measured intervals.
Welded wire mesh can be formed into many different shapes. It is made of high strength metals such as carbon steel, galvanized steel, and stainless steel. Special coatings may be added to make the metal surfaces more corrosive and chemical resistant.
In hot dip galvanization, the base metal is immersed in a pool of molten zinc. Before this process begins, the base metal undergoes thorough cleaning, both physically and chemically, to ensure that the zinc coating adheres properly and forms a strong bond. After cleaning, the base metal is treated with flux to remove any remaining oxides and ensure optimal coating quality.
A metallurgical bond is formed when the base metal is dipped into a bath of molten zinc. The zinc bonds with the base metal, and upon removal from the bath, the metal reacts with oxygen in the air to create a protective layer of zinc oxide.
Steps involved in hot dip galvanization:
Electrogalvanizing, or electrolytic galvanizing, is a cold process that involves applying a solution of zinc particles to the metal's surface. The chemicals in the solution react to form a zinc-steel alloy. After the solvent evaporates, a layer of zinc remains on the metal. In this process, zinc ions are electrically reduced and deposited onto the charged metal substrate.
Grain refiners can be employed to ensure a consistent zinc coating. In the continuous process for sheet metal, electro-galvanizing is often used. The most common setup involves lead-silver or other insoluble anodes with electrolytes containing zinc sulfates.
Galvanizing stainless steel Galvanizing can occur either before or after the metal is formed into wire mesh. Initially, the metal is drawn to the desired diameter and then galvanized. Alternatively, the zinc coating is applied to the individual metal wires before they are woven or welded into screens. If the coating is burned off during the welding process, it may need to be reapplied. For pre-woven steel products, the coating is either applied with a solvent or achieved by dipping the mesh into molten zinc during fabrication.
Compared to low-carbon steel, galvanized welded wire mesh provides superior corrosion resistance at a lower cost than stainless steel. This type of welded wire mesh is commonly used for constructing fences and other infrastructure. It is available in different formats, such as rolls and panels, to suit various industrial applications. The galvanization processes differ in terms of materials, thickness, and methods used.
Welded wire mesh is made from wire strands that are resistance welded at their intersections. In addition to galvanized steel, welded wire mesh can be produced using a variety of wire types, including carbon steel, stainless steel, aluminum, copper, and brass.
Carbon steel welded wire mesh is the most commonly used type of wire mesh. It consists of iron with a small amount of carbon, providing high tensile strength and resistance to abrasion from regular use. This type of mesh is used in filtration systems, infill panels, window guards, caging, and security enclosures. It comes in various wire diameters, thicknesses, and finishes, making it adaptable to a wide range of applications.
Stainless steel is renowned for its rust resistance, attributed to its 11.5% chromium content. It is widely used in the welded wire mesh industry for its durability, strength, and ability to withstand various conditions and environments. Stainless steel has a self-healing oxide layer that repairs itself when subjected to impact or stress, preventing the exposed area from corroding.
Welded aluminum wire mesh weighs about one-third as much as stainless steel welded wire mesh but offers similar properties. The primary advantage of aluminum is its resistance to corrosion, making it well-suited for harsh environments with extreme temperatures, heavy rainfall, and high winds.
In addition to its notable strength and durability, aluminum welded wire mesh is more affordable than heavier metals, making it suitable for a wider range of projects and applications. It can also be treated with various surface treatments to further improve its strength and resistance.
Brass, an alloy of zinc and copper, is ideal for use in environments with combustible and explosive materials due to its anti-sparking properties. Brass welded wire mesh is also valued for its attractive appearance, making it a popular choice for architectural and decorative applications. Common brass alloys used in welded wire mesh include C230, C260, and C270.
Welded copper wire mesh offers excellent electrical and thermal conductivity, along with good corrosion resistance. It is commonly used in architectural applications and marine environments.
Welded wire mesh panels, typically made from galvanized steel, are produced using electric welding machines in the same manner as other types of welded wire mesh. These panels are galvanized either before or after welding. The primary applications for welded wire mesh panels are security protection and fencing.
Galvanized steel mesh panels feature a smooth surface, are corrosion-resistant, and are more cost-effective than sheet materials. They are lightweight, easy to install, and convenient to use. Made from steel and stainless steel wire, these panels are galvanized through an electroplating process, which applies a zinc coating to protect the mesh from corrosion and rust.
In hot dip galvanizing, the panels are immersed in molten zinc to create a thick, protective coating, making them suitable for use in harsh, rugged conditions. On the other hand, the electro-galvanizing method is more efficient and cost-effective, providing a thinner zinc layer.
Galvanized mesh panels are commonly utilized in numerous applications because of their strength, resistance to corrosion, and appealing look. They are often used for:
Welded wire panels are commonly packaged with a layer of kraft paper and a plastic film to protect them from moisture during transport and storage. Additionally, wooden pallets are placed between the packages to secure the panels and prevent shifting during shipping, ensuring they arrive safely.
The cost of galvanized steel wire mesh can vary widely, typically ranging from $8 to $20. Several factors influence the price, including the size of the mesh, wire diameter, galvanization method, thickness of the zinc coating, packaging, shipping, and taxes.
Welded wire mesh is typically made from either stainless steel rebar or galvanized steel rods. Both materials offer excellent corrosion resistance and are suitable for use in damp conditions.
The wires adhere to IS:432-Pt II/ standards, which specify a characteristic strength of 480 N/mm² and a tensile strength of 570 N/mm².
Welded wire mesh is usually available in rectangular and square shapes. It can be produced in lengths up to mm, with widths also reaching up to mm. When delivered as flat sheets, the standard length is typically mm. Alternatively, it can be supplied in rolls with conventional lengths of 15 meters, 30 meters, or 45 meters.
Typically, the wires used in the production of welded wire mesh have diameters ranging from 2 to 12 mm. The fabric is classified according to IS:-, with long and cross-wire spacings varying from 25 to 400 millimeters.
Wire cutters make it easy to cut welded wire fabric to the desired size. The mesh is flexible, allowing it to be bent as needed. Once cut, it can be positioned for various applications, such as in stairways.
Lapping is usually not needed since wire fibers come in various sizes. However, if lapping is necessary, it is recommended to overlap by at least 6 inches.
Standard procedure requires leaving a gap of 1 to 3 inches between the wire fabric and the formwork.
To ensure even distribution of the mix and proper embedding of the fabric to reduce cracking, it is recommended to vibrate plastic concrete reinforced with welded wire mesh.
Welded wire fabric provides similar structural performance to HYSD bars or plain mild steel bars, thanks to the inherent strength of the welded wires which enhances its overall durability.
The bonding of concrete primarily occurs through the peripheral surface area. In welded wire fabric, stress is transferred between the concrete and steel through the rigid mechanical connections at the welds and cross-wires. Each rigid weld can withstand up to 210 N/mm², facilitating efficient and complete stress transmission between two welded joints within the critical section.
The primary features of welded wire fiber that help reduce cracks in concrete are the close spacing of the thinner wires and the strong mechanical anchorage at each intersection. The closely spaced wires effectively counteract strain-induced stresses caused by shrinkage and temperature fluctuations. This design ensures the slab's structural stability and minimizes cracking.
The most noticeable and advantageous benefits of using welded wire fabric are the immediate labor and time savings. Unlike traditional methods, there is no need to cut, mark, or space individual bars, and most importantly, binding wires are not manually tied, significantly reducing labor efforts.
Welded wire fabric is especially easy to handle because of its smaller wires. It provides an ideal and practical solution for various repair tasks, including replastering, thanks to its availability in long roll forms.
Recent advancements in welding technology, such as remote welders, have led to increased productivity and reduced downtime. Manufacturers that provide on-site repairs and modifications are highly valued for their ability to adapt to changing market demands. These services are increasingly in demand, with each type of technology used based on specific needs and requirements.
Galvanizing can be done before or after the wire mesh is created, whether it is woven or welded. After the mesh is formed, it is submerged in molten zinc. This process causes the zinc to adhere to the surface of the wire, forming a protective layer that guards against rust and corrosion. One of the key advantages of galvanized wire mesh is its variety of aperture sizes and wire diameters. This versatility allows it to be used in various applications, including safety guards, window grills, security cages, and building enclosures. Additionally, it is an excellent choice for general fencing needs.
Welded mesh is made from durable steel wire that is electronically welded at every point of contact, resulting in an incredibly strong and versatile material. This welding process ensures that each intersection of the steel mesh is securely bonded, making it suitable for a variety of demanding applications. It is commonly used to create safety guards and screens due to its strength and ease of manufacture.
Welded mesh finds applications across various industries, including horticulture, retail, transportation, and agriculture. It is versatile for both indoor and outdoor uses.
In residential settings, welded mesh is often used as an affordable fencing material, an impact screen for windows, or a safety cover for drains and open water.
The flat surface of welded mesh provides structural integrity and can support or protect other objects. Steel mesh, also known as welded wire mesh, is employed for numerous purposes, including
To accurately describe the types of treatments and styles of wire mesh, it's important to understand several key terms associated with welded wire mesh.
Calendering - This process involves flattening the knuckles of welded wire mesh to create a smooth surface.
Fill Wire - Also known as the shute wire, this is the wire that runs across the width of the mesh.
Hardware Cloth - Lightweight welded square wire mesh that is galvanized after welding.
Market Cloth - General use welded wire mesh suitable for a variety of applications.
Mesh Count - The number of openings per linear inch, measured from the center of one wire to the center of the next.
Oil Tempered Wire - Carbon steel wire that has been heat-treated to improve resistance to heat.
Opening - The distance between parallel wires in the mesh.
Selvage - The looped edges of welded wire mesh.
Space Cloth - A term describing welded wire mesh based on the size of the openings rather than the mesh count.
Warp Wire - The wire that runs parallel to the length of the mesh and is perpendicular to the fill wire.
Weave Pattern - The pattern created by the interwoven welded wires.
Wire Diameter - The thickness of the wire used to manufacture the welded wire mesh.
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